JP7148043B2 - Manufacturing method of tissue paper product - Google Patents

Description

The present disclosure relates to methods of making tissue paper products.

Techniques are known for attempting to properly set the withdrawal resistance of tissue paper from a carton.

JP 2012-24548 A JP 2014-28629 A

However, in the above-described conventional technology, even if the number of sets of lotion tissue paper is relatively large, the carton height can be made compact, the lotion tissue paper can be easily pulled out, and the quality of the lotion tissue paper (tactile sensation, resistance to tearing, etc.) It is difficult to manufacture tissue paper products with good stiffness (including when pulled out) with good productivity.

Therefore, in one aspect, the present invention realizes a compact carton height even if the number of sets of lotion tissue paper is relatively large, makes it easy to pull out the lotion tissue paper, and makes it difficult to tear when pulling out. To manufacture a tissue paper product having good paper quality (tactile feel, resistance to tearing (including when pulled out)) with good productivity.

One aspect provides the following solutions.

(1) A method for producing a tissue paper product by stacking a plurality of sets of two-ply sheets of lotion tissue paper coated with a chemical solution and packing them in a carton, which is a substantially rectangular parallelepiped storage box. hand,
The lotion tissue paper is
basis weight per sheet ply is 12 g/m2 or more and 20 g/m2 or less;
The number of pairs is 182 or more and 250 or less,
DCDT is 0.5N/25mm or more and 2.3N/25mm or less,
DMDT is 2.2N/25mm or more and 4.7N/25mm or less,
DMDT/DCDT is 1.9 or more and 4.4 or less,
Housed in the carton with a height of 65 mm or more and 95 mm or less,
3 to 15 sets of drawing resistance from the top are 0.61 N or more and 1.30 N or less,
3 to 20 sets of drawing resistance from the bottom is 0.15N or more and 0.60N or less,
a content of the chemical solution per ply of the sheet is 1.7 g/m2 or more and 3.7 g/m2 or less;
In the manufacturing method, a primary roll is produced in a papermaking facility, a secondary roll is produced by plying the produced primary roll with a winder, and the produced secondary roll is produced. A chemical solution is applied to the roll to manufacture a tertiary raw fabric, and the manufactured tertiary raw fabric is processed by a multi-stand interfolder so that the drawing direction of the lotion tissue paper is in the CD direction. (2) a method for producing a tissue paper product, which includes packing a laminate obtained by stacking a plurality of sets of the lotion tissue paper while folding them into a box;

(2) In the configuration of (1) above, the storage period from the production of the secondary raw fabric to the coating is set to 24 hours or more and 504 hours or less.

(3) In the configuration of (1) or (2) above, the storage time from the production of the tertiary raw fabric to the processing into the product is 12 hours or more and 504 hours or less.

(4) In any one of the above configurations (1) to (3), the laminate is formed by folding one set of the lotion tissue paper two or more times along the long side direction,
A first set of the lotion tissue paper is folded so that the folding part is positioned below the outlet of the carton.

(5) In the configuration of (4) above, the first set of the lotion tissue paper extends from the first side to the second side from the lower end when viewed in the long side direction of the carton, and has a first It is folded back to the first side and upward at the folding portion, and the rest of the folded portion extends from the second side to the first side and is folded back to the second side and downward at the second folding portion. ,
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. and
The lower end of the first set of lotion tissue paper is positioned inside the fourth folded portion, and the upper end of the first set of lotion tissue paper and the second set of lotion tissue paper are positioned inside the first fold portion. characterized in that the upper end of the

(6) In the configuration of (4) above, the first set of lotion tissue paper extends from the first side to the second side from the lower end when viewed in the long side direction of the carton, and has a first folded back to the first side and upward at the folding portion, the folded remaining portion extends from the second side to the first side, and is folded back to the second side and upward at the second folding portion;
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. and
The lower end of the first set of the lotion tissue paper is positioned inside the fourth folded portion, the upper end of the second set of the lotion tissue paper is positioned inside the first folded portion, and the lotion tissue paper The upper end of the first set is positioned on the uppermost side of the laminate.

(7) In the configuration of (4) above, the first set of lotion tissue paper extends from the first side to the second side from the lower end when viewed in the long side direction of the carton, and has a first It is folded back to the first side and upward at the folding portion, and the rest of the folded portion extends from the second side to the first side and is folded back to the second side and downward at the second folding portion. , the folded-back further remaining portion extends from the first side to the second side and is folded back to the first side and downward at the third fold,
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. , the folded remaining portion extends from the first side to the second side and is folded back to the first side and upward at the fifth folding portion;
The lower end of the first set of lotion tissue paper is positioned inside the fourth fold, the fifth fold is positioned inside the first fold, and the second fold is placed inside the second fold. An upper end of the second set of the lotion tissue paper is positioned, and the third folded part is positioned inside the fifth folded part.

(8) In the configuration of (4) above, the first set of lotion tissue paper extends from the second side to the first side from the lower end when viewed in the long side direction of the carton, and has a first It is folded back to the second side and upward at the folding portion, and the remaining folded portion extends from the first side to the second side, is folded back to the first side and upward at the second folding portion, and is folded back. The additional remaining portion extends from the second side to the first side and is folded back to the second side and downward at the third fold, and the folded additional remaining portion extends from the first side. extends from the side to the second side, and is folded back to the first side and the bottom side at the last fold,
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. , the folded remaining portion extends from the first side to the second side and is folded back to the first side and downward at the fifth folding portion;
The first folding portion is positioned inside the fourth folding portion, the fifth folding portion is positioned inside the second folding portion, and the fifth folding portion is positioned above the fifth folding portion. 3 and the last folding portion are positioned.

(9) In any one of the above configurations (1) to (8), no sizing agent is blended in the papermaking process, and the amount of the wet paper strength agent added is 0.05% relative to the pulp when comparing the solid contents. 0.35% or more, and FPR (first pass retention) is 35% or more and 93% or less.

(10) In any one of the configurations (1) to (9) above, the lotion tissue paper is characterized in that the content of the chemical solution is 10% by mass or more and 22% by mass or less.

(11) In any one of the above (1) to (10), the carton is characterized in that the space above one set of the lotion tissue paper is 2 mm or more and 20 mm or less.

In one aspect, according to the present invention, even if the number of sets of lotion tissue paper is relatively large, the carton height can be made compact, the lotion tissue paper can be easily pulled out, and the quality of the lotion tissue paper (touch, tear, etc.) can be improved. It is possible to manufacture a tissue paper product with good resistance (including when it is pulled out) with good productivity.

1 is a perspective view of a tissue paper product of the present invention; FIG. 1 is a transparent perspective view of the inside of the tissue paper product of the present invention; FIG. FIG. 2 is an explanatory view of various dimensions of the outlet of the carton, and is a top view of the tissue paper product of the present invention. FIG. It is explanatory drawing of the measuring method of upper space. FIG. 4 is an explanatory diagram of a method of measuring a pull-out resistance; FIG. 4 is an explanatory diagram of a method for measuring a static friction coefficient; 1 is a drawing showing an example of a machine winder used for manufacturing the lotion tissue paper of the present invention. 1 is a drawing showing an example of a storage device used for manufacturing lotion tissue paper of the present invention. It is the schematic which shows a preferable example of how to fold. It is the schematic which shows a preferable example of how to fold. It is the schematic which shows a preferable example of how to fold. It is the schematic which shows a preferable example of how to fold. It is the schematic which shows the reference example of how to fold.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated in detail.

<Lotion tissue paper>
FIG. 1A is a perspective view of a tissue paper product 7 containing lotioned tissue paper 1 of the present invention. FIG. 1B is a transparent perspective view of the inside of the tissue paper product 7 of the present invention. Lotion tissue paper 1 in carton 20 is shown schematically in dotted lines in FIG. 1B.

The lotion tissue paper 1 is composed of a two-ply sheet, and the base paper is calendered and a chemical solution (also referred to as "lotion chemical solution") is applied. The lotion tissue paper 1 of the present invention is adjusted in terms of paper thickness, basis weight per sheet ply, softness TS7, chemical solution content, and the like. Also, the lotion tissue paper 1 of the present invention is housed in a carton 20 as shown in FIG. 1A. In the present invention, the longitudinal direction is the direction parallel to the outlet 21 of the carton 20, and the lateral direction is the direction perpendicular to the longitudinal direction. Moreover, regarding the carton 20, the lotion tissue paper 1, etc., the terms "long side direction" and "short side direction" are also used.
In the following description, the properties of the lotion tissue paper 1 are the properties of one set (per two plies) of the lotion tissue paper 1 unless otherwise specified .

[Paper thickness, basis weight]
The paper thickness of the lotion tissue paper 1 of the present invention is 0.50 mm/ 5 sets or more and 0.90 mm/ 5 sets or less, preferably 0.55 mm/5 sets or more and 0.82 mm/5 sets or less, More preferably, it is 0.60 mm/5 pairs or more and 0.75 mm/ 5 pairs or less. The above paper thickness indicates the paper thickness when 5 sets of 2-ply lotion tissue paper are stacked. Here, as in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the feel is good, but if the paper thickness is low, the feel is poor, and the number of sets is large. The upper space becomes large and it becomes difficult to pick up the tissue when pulling it out. If it is high, the number of sets is large, so the carton 20 cannot be made compact. In this regard, by setting the thickness of the paper within the above range, the carton 20 can be made compact while improving the tactile sensation.

In the lotion tissue paper 1 of the present invention, the basis weight per sheet ply is 12 g/m ² or more and 20 g/m ² or less, preferably 14 g/m ² or more and 19 g/m ² or less, and 16 g. /m ² or more and 18 g/m ² or less. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the touch feeling is improved. Since the pulp content of the paper is reduced, the strength (in particular, DMDT) is lowered, and the number of paper breaks increases, resulting in a decrease in productivity. If the basis weight is high, the number of sets is large, so the carton cannot be made compact. By setting the paper thickness of the lotion tissue paper 1 and the basis weight per ply of the sheet within the above ranges, both softness and strength, compactness of the carton 20 and number of sets can be achieved. The basis weight and paper thickness are those of the lotion tissue paper 1 itself, and mean the basis weight and paper thickness of the lotion tissue paper 1 to which the chemical solution is applied.

[TS7]
In the lotion tissue paper 1 of the present invention, the intensity (TS7) of the maximum peak of the spectrum including 6500 Hz, which is automatically acquired by the software on the tissue softness measuring device TSA, is preferably 8 dBV2rms or more and 15 dBV2rms or less, and 9 dBV2rms. It is more preferably 13 dBV2rms or more, and even more preferably 10 dBV2rms or more and 12 dBV2rms or less. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the tactile sensation is improved. If the amount is within the range of the present invention and the grammage is increased, the pulp content per grammage increases, resulting in a high TS7, which may result in poor tactile sensation as a lotion tissue paper and a compact carton height. When TS7 is low, the tissue paper product 7 becomes too soft, and when using a carton 20 with a large number of sets and a compact carton height, the lotion tissue paper 1 is easily torn when pulling out the lotion tissue paper from the carton. In some cases, the number of paper breaks increases during processing, resulting in poor productivity. When TS7 is within the above range, the softness and strength (tear resistance) of the lotion tissue paper 1 are maintained in a well-balanced manner.

TS7 is the lotion tissue paper 1 itself, and means TS7 for the lotion tissue paper 1 in a state where the chemical solution is applied.

A method of measuring TS7 using a tissue softness measuring apparatus TSA and a measuring apparatus used therein are described in detail in, for example, Japanese Patent Application Laid-Open No. 2013-236904.

[Specific volume]
The specific volume of the lotion tissue paper 1 of the present invention is preferably 3.0 cm ³ /g or more and 5.7 cm ³ /g or less, and 3.4 cm ³ /g or more and 5.2 cm ³ /g or less per set. more preferably 3.6 cm ³ /g or more and 4.7 cm ³ /g or less. The specific volume is calculated by dividing the paper thickness (per sheet (ply)) by the basis weight (per sheet (ply)). As in the present invention, even if the number of sets of the lotion tissue paper 1 is large, the carton height is made compact and the tactile sensation is improved. Since there are many, the upper space becomes large and it may be difficult to pick up when pulling out the tissue. If the specific volume is high, the number of sets is large, so the carton 20 cannot be made compact. The specific volume can be adjusted, for example, by adjusting the basis weight and paper thickness.

[Strength in the direction perpendicular to the drawing direction (DMDT)]
The lotion tissue paper 1 of the present invention has a dry machine direction tensile strength (measured at a tensile speed of 300 mm / min) DMDT (Dry Machine Direction Tensile strength) based on JIS P 8113 of 2.2 N / 25 mm or more and 4.7 N. /25 mm or less, more preferably 2.6 N/25 mm or more and 4.0 N/25 mm or less, and even more preferably 3.0 N/25 mm or more and 3.5 N/25 mm or less. As in the present invention, even if the number of sets of the lotion tissue paper 1 is large, the carton height is made compact and the touch feeling is improved. increased, resulting in lower productivity. If the lotion content is within the range of the present invention and the grammage is increased, the pulp content per grammage increases, resulting in a high DMDT, which may result in a poor texture as a lotion tissue paper and a compact carton height. be.

By setting the DMDT within the above range, the possibility of paper breakage can be reduced while improving the feel of the lotion tissue paper 1 .

[Draw-out direction strength (DCDT)]
The lotion tissue paper 1 of the present invention has a dry cross direction tensile strength (measured at a drawing speed of 300 mm/min) DCDT (Dry Cross Direction Tensile strength) of 0.5 N/25 mm or more and 2.3 N/25 mm or less. more preferably 0.7 N/25 mm or more and 1.7 N/25 mm or less, and even more preferably 0.9 N/25 mm or more and 1.3 N/25 mm or less. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the tactile sensation is improved. If the value of DCDT is small, the lotion tissue paper 1 becomes too soft and tends to tear when the lotion tissue paper 1 is pulled out. By setting the DCDT within the above range, the texture of the lotion tissue paper 1 can be improved and the tissue paper 1 can be less likely to tear when the tissue is pulled out.

[DMDT/DCDT]
The DMDT/DCDT of the lotion tissue paper 1 of the present invention is preferably 1.9 or more and 4.4 or less, more preferably 2.3 or more and 3.9 or less, and 2.7 or more and 3.5 or less. is more preferable. If the value of DMDT/DCDT is low, the texture of the lotion tissue paper 1 tends to be inferior, but if the value is high, the lotion tissue paper 1 becomes too soft, and a carton 20 with a large number of sets and a compact carton height is used. It becomes easy to tear when pulling out tissues, and more paper breakage occurs during processing. In this regard, by setting DMDT/DCDT within the above range, the texture of the lotion tissue paper 1 and productivity can be improved.

[Tensile elongation at break during DMDT measurement]
The lotion tissue paper 1 of the present invention preferably has a tensile elongation at break (hereinafter also referred to as "longitudinal elongation") measured by DMDT after coating with a chemical solution of 11.1% or more and 19.0% or less. .1% or more and 17.5% or less is more preferable, and 15.1% or more and 16.5% or less is even more preferable. Here, as in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the touch feeling is improved, and when the lotion content is within a certain range, the calendering is strongly performed. If the thickness of the paper is reduced, the thickness of the paper is reduced, so that the carton 20 can be made compact. However, when the thickness of the paper is reduced by calendering, the specific volume becomes low, so that it becomes difficult for the chemical lotion to permeate the tissue uniformly, and the portion where a large amount of the chemical lotion has permeated tends to tear. Therefore, it is important to adjust the crepe rate to keep the longitudinal elongation within a certain range. Therefore, if the longitudinal elongation is low, the lotion tissue paper 1 is easily torn, and if the longitudinal elongation is high, the paper thickness is high, and it is difficult to make the carton 20 compact when the number of sets is large. In this regard, by realizing the longitudinal elongation in the range as described above, it is possible to reduce the size of the carton 20 while suppressing the tendency of the lotion tissue paper 1 to tear easily (uneven penetration of the chemical solution). can.

In order to achieve the longitudinal elongation in the above range, it is advantageous to increase the crepe ratio of the base paper. For example, the crepe ratio of the base paper is preferably 15% or more and 36% or less, more preferably 18% or more and 32% or less, and even more preferably 21% or more and 28% or less.

[Chemical solution]
The lotion tissue paper 1 of the present invention contains a chemical solution. The chemical liquid contains an aqueous component and an oily component, and preferably contains water. In another aspect, the chemical solution may contain only one of the aqueous component and the oil component. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the height of the carton can be made compact and the tactile sensation can be improved.

(Aqueous component)
Examples of the aqueous component include polyhydric alcohols (alcohols having dihydric or higher hydroxyl groups). More specific examples include glycerin, diglycerin, ethylene glycol, propylene glycol, 1,3-butylene glycol, polyglycerin, polyethylene glycol, polypropylene glycol, sorbitol, xylitol, erythritol and the like. The above polyhydric alcohols may be blended alone or in combination of two or more. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height can be made compact and the touch feeling can be improved. can be

(Oil component)
Examples of oily components include various silicone oils, liquid paraffin, mineral oils, waxes, and the like. One type of these components may be blended, or two or more types may be blended. These components contribute to the smoothness of the lotion tissue paper 1. In the present invention, it is particularly preferred that this oily component is a silicone oil, more preferably an amino-modified silicone oil. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height can be made compact and the touch feeling can be improved. can be

(Drug content (lotion content))
The chemical solution content in the lotion tissue paper 1 of the present invention is preferably 10% by mass or more and 22% by mass or less, more preferably 12% by mass or more and 19% by mass or less, and 14% by mass or more and 17% by mass. More preferably:

In the lotion tissue paper 1 of the present invention, the chemical solution content per ply is preferably 1.7 g/m ² or more and 3.7 g/m ² or less, and more preferably 2.0 g/m ² or more and 3.2 g. /m ² or less, more preferably 2.3 g/m ² or more and 2.9 g/m ² or less.

By setting the chemical solution content within the above range, the lotion tissue paper 1 can be made compact in height even if the number of sets of the lotion tissue paper 1 is large, and the touch feeling is good, as in the present invention. The tactile sensation of 1 can be improved, and even if a compact carton 20 with a large number of sets is used, it can be prevented from tearing when it is pulled out. In addition, if the chemical solution content is low, the feel of the lotion tissue paper 1 tends to be poor, and if the value is high, even when a compact carton 20 with a large number of sets is used, it can be prevented from tearing when it is pulled out. . By setting the content of the chemical solution within the above range, the possibility of the lotion tissue paper 1 being easily torn can be reduced while improving the tactile feel of the lotion tissue paper 1 .

In addition, chemical|medical solution content is calculated|required by the following measuring method. 5 g of lotion tissue paper 1 is sampled, dried in a dryer (105° C.) for 120 minutes, then allowed to cool in a desiccator for 30 minutes, and the mass is measured. Let the measured mass at this time be m1. Next, Soxhlet extraction is performed for 4 hours using lotion tissue paper 1 whose mass has been measured and 150 ml of an extraction solvent (acetone:ethanol=1:1). The resulting extract is heated and concentrated on a hot water bath, dried in a drier (105° C.) for 90 minutes, allowed to cool in a desiccator for 30 minutes, and weighed. Let the measured mass at this time be m2. Then, using the obtained two measured masses m1 and m2, m2/m1×100 (%) is defined as the drug solution content (lotion content [%]). Further, basis weight per ply×lotion content=medicine content (lotion content) (g/m ² ).

(Tissue paper raw material)
The two-ply sheet that constitutes the lotion tissue paper 1 is mainly composed of pulp, and preferably contains 50% by mass or more of pulp. Pulp that can be used for manufacturing the lotion tissue paper 1 includes wood pulp, waste paper pulp, and non-wood pulp, but the lotion tissue paper 1 of the present invention may consist of 100% wood pulp as pulp. , In addition to wood pulp, waste paper pulp and non-wood pulp may be included. Components other than pulp include fillers, synthetic fibers, natural fibers, and the like. In order to obtain the target quality, wood pulp consisting of 20% to 50% by mass of bleached softwood kraft pulp (NBKP) and 50% to 80% by mass of bleached broadleaf kraft pulp (LBKP) is used as a raw material. NBKP: 25% by mass or more and 45% by mass or less, and LBKP: 55% by mass or more and 75% by mass or less, more preferably wood pulp as a raw material, NBKP: 30% by mass or more and 40% by mass and LBKP: 60% by mass or more and 70% by mass or less.

As the wood species of the LBKP, pulp produced from the genus Eucalyptus of the family Myrtaceae, typified by Eucalyptus grandis and Eucalyptus globulus, is preferable. Further, up to about 50 parts by mass of used paper pulp may be contained with respect to 100 parts by mass of wood pulp having the above pulp ratio. The quality of waste paper pulp varies greatly, and if the blending ratio increases, the quality of the product, especially the softness, is greatly affected. is more preferable, more preferably 5 parts by mass or less, and most preferably no waste paper pulp is blended. The waste paper pulp is preferably derived from paper liquid beverage containers such as milk cartons.

In order to ensure proper strength of the lotion tissue paper 1, the strength can be adjusted by beating the pulp fibers after the raw materials are blended by ordinary means. As the beating treatment for obtaining the target quality, the freeness (csf) of the seed box raw material is preferably 350 ml or more and 650 ml or less, preferably 400 ml or more and 600 ml or less, more preferably 450 ml or more and 550 ml or less. A dry paper strength agent may be used, and a wet paper strength agent is preferably used.
By adjusting the above pulp composition and freeness, as in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height can be made compact and the touch feeling can be improved. The texture of the lotion tissue paper 1 can be improved when the lotion content is adjusted, and even if a large number of clips are inserted into a compact carton 20, they are hardly torn when pulled out.

(Dimensions of lotion tissue paper (sheet width))
The sheet width (dimension in the longitudinal direction of the carton 20) (see W5 in FIG. 1B) of the lotion tissue paper 1 of the present invention is preferably 170 mm or more and 255 mm or less, more preferably 190 mm or more and 245 mm or less, More preferably, it is 210 mm or more and 235 mm or less. The dimensions of the lotion tissue paper 1 may be adapted according to the dimensions (see W2 in FIG. 1A) and properties of the carton 20 (described later).
In addition, the sheet length perpendicular to the sheet width of the lotion tissue paper 1 of the present invention (the dimension in the long side direction of the carton 20), that is, the sheet length in the short side direction (the dimension in the state before folding or the folded tissue) The dimension in the unfolded state) is preferably 135 mm or more and 215 mm or less, more preferably 155 mm or more and 205 mm or less, and even more preferably 175 mm or more and 195 mm or less. By setting the sheet width and the sheet length in the above range, the sheet width and length are suitable for inserting clips of lotion tissue paper 1 of the present invention in a large number of sets into the carton 20 of the carton height of the present invention. It becomes hard to be torn at the time of drawer.

[carton]
The lotion tissue paper 1 of the present invention is housed in a paper carton 20 which is a substantially rectangular storage box.

(Length of drawer opening)
The length of the outlet 21 of the carton 20 (the length of the slit 5 of the window film 4) (see W4 in FIG. 1A) is preferably 70 mm or more and 160 mm or less, more preferably 90 mm or more and 140 mm or less, More preferably, it is 105 mm or more and 125 mm or less.

In addition, the length of the outlet 21 of the carton 20 (the slit length of the window film 4) is 30% or more and 72% or less, and 40% or more and 62% or less of the dimension in the long side direction of the lotion tissue paper 1. preferably 45% or more and 55% or less. By setting the dimensions of the drawer port 21 within the above range, the lotion tissue paper 1 can be made compact in height even when the number of sets of the lotion tissue paper 1 is large, and the feel of the lotion tissue paper 1 is good, as in the present invention. can be pulled out more easily, tearing of the lotion tissue paper 1 when pulled out is reduced, and drop back (a phenomenon in which the lotion tissue paper 1 protruding from the take-out port falls into the carton 20, After the drop back, it becomes difficult to pull out the tissue) is also reduced.

The length (see L1 in FIG. 1C) perpendicular to the center of the drawer port 21 of the carton 20 (L0 = 126 mm as an example in FIG. 1C), the position shifted by 20% of L0 from the center (in FIG. 1C 126 mm × 20% = 25 mm shifted position) lengths L2, L3 (see FIG. 1C) The average value of the total three points is preferably 22 mm or more and 72 mm or less, more preferably 30 mm or more and 62 mm or less , 38 mm or more and 52 mm or less. By setting such a numerical range, as in the present invention, even if the number of sets of the lotion tissue paper 1 is large, the carton height is made compact and the touch feeling is improved, and the lotion tissue paper 1 is easier to pull out. This reduces breakage of the lotion tissue paper 1 when it is pulled out, and also reduces dropback.

The thickness of the window film 4 is preferably 30 μm or more and 70 μm or less, more preferably 40 μm or more and 60 μm or less, and even more preferably 45 μm or more and 55 μm or less. By setting the thickness of the window film 4 in the above range, the lotion tissue paper 1 can be made compact in height even if the number of sets of the lotion tissue paper 1 is large, and the touch feeling is good, as in the present invention. The drawability suitable for 1 is improved and the dropback is reduced. The length of the slit and the thickness of the window film are determined using the lotion tissue paper 1 of the present invention and a carton 20, which is a substantially rectangular parallelepiped storage box in which a plurality of sets of the lotion tissue paper 1 are stacked and folded to form a pop-up. It is what you get when you use it.

(carton dimensions)
From the viewpoint of compactness, the dimension in the long side direction of the carton 20 (see W2 in FIG. 1A) is preferably 227 mm or more and 257 mm or less when the sheet width is 225 mm, and more preferably 232 mm or more and 247 mm or less. , 235 mm or more and 242 mm or less. The longitudinal dimension of the carton 20 is the longitudinal dimension of the carton 20 (see W2 in FIG. 1A) and the sheet width of the lotion tissue paper 1 (the longitudinal dimension of the carton 20) (see FIG. 1B). W5)), the dimensions of the carton 20 and the sheet can be determined so that the relationship is within the specified range.

The relationship between the dimension in the long side direction of the carton 20 (see W2 in FIG. 1A) and the sheet width of the lotion tissue paper 1 (the dimension in the long side direction of the carton 20) (see W5 in FIG. 1B) is W5/W2×100 is preferably 88% or more and 99% or less, more preferably 91% or more and 97% or less, and even more preferably 93% or more and 96% or less. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the tactile sensation is improved. By setting the thickness in the above range, the compactness of the carton 20 and the resistance to tearing during extraction can be improved.

From the viewpoint of compactness, the dimension of the carton 20 in the short side direction (see W3 in FIG. 1A) is preferably 95 mm or more and 130 mm or less, and more preferably 100 mm or more and 120 mm or less when the sheet length is 188 mm. , 105 mm or more and 115 mm or less. The dimensions in the short side direction of the carton 20 are the dimensions in the short side direction of the carton 20 described below (see W3 in FIG. 1A) and the sheet length of the lotion tissue paper 1 (sheet length in the short side direction of the carton 20) (see FIG. (not shown) can be sized to provide a defined range for the carton 20 and sheet.

The relationship between the dimension in the short side direction of the carton 20 (see W3 in FIG. 1A) and the sheet length of the lotion tissue paper 1 (sheet length in the short side direction of the carton 20) W7 (not shown) is W7/(W3 x2) x100 is preferably 72% or more and 99% or less, more preferably 78% or more and 94% or less, and even more preferably 81% or more and 90% or less. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the tactile sensation is improved. By setting the thickness within the above range, the compactness of the carton 20 and the resistance to tearing when being pulled out can be improved.

(Quantity of lotion tissue paper and height of carton)
The number (number of sets) of the lotion tissue paper 1 contained in the carton 20 is preferably 182 or more and 250 or less, more preferably 192 or more and 230 or less, and 202 or more and 210 or less. is more preferable. If the number of sets is small, the replacement frequency is inferior, and if the number of sets is large, the lotion tissue paper 1 of the present invention with the basis weight and lotion content within a certain range will have a large (high) clip, and in that case, the carton will be not compact.

The height of the carton 20 (hereinafter also referred to as "carton height") (see H in FIG. 1A) is preferably 65 mm or more and 95 mm or less, more preferably 69 mm or more and 85 mm or less, from the viewpoint of compactness. , 73 mm or more and 80 mm or less. If the height of the carton 20 is low, it becomes difficult to pull out the lotion tissue paper 1 of the present invention with a large number of sets.

At this time, the height of the carton 20 per set (carton height/number of sets) is preferably 0.32 mm or more and 0.46 mm or less, more preferably 0.34 mm or more and 0.41 mm or less. , 0.36 mm or more and 0.40 mm or less. In this way, by setting the number of lotion tissue papers 1 in a certain range and realizing the height of the carton 20 according to the number of lotion tissue papers 1 in the carton, it is easy to pull out one set of lotion tissue papers 1 and the carton. 20 can be effectively improved. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the tactile sensation is improved. By doing so, it is possible to improve the easiness of gripping (easily pulling out) the tissue paper product 7 and the compactness of the carton 20 .

The height of the carton 20, the dimension in the long side direction, and the dimension in the short side direction are taken as outer dimensions. The basis weight of the carton 20 is preferably 300 g/m ² or more and 510 g/m ² or less, more preferably 340 g/m ² or more and 480 g/m ² or less, and even more preferably 380 g/m ² or more and 450 g/m ² or less. The paper thickness (per sheet) of the carton 20 is preferably 370 μm or more and 630 μm or less, more preferably 420 μm or more and 590 μm or less, and even more preferably 470 μm or more and 550 μm or less. By setting the above range, when the clip of the lotion tissue paper 1 of the present invention with a large number of sets and a good touch is inserted into the carton 20, the carton 20 is not crushed and the pullout property is improved. The resistance to time tearing can also be improved.

(upper space)
The carton 20 preferably has an upper space (see W6 in FIG. 1B) of 2 mm or more and 20 mm or less, more preferably 5 mm or more and 17 mm or less. It is preferably 8 mm or more and 14 mm or less, more preferably. As in the present invention, even if the number of sets of lotion tissue paper 1 is large, the carton height is made compact and the feel is good. Conversely, if the upper space is large, the carton 20 is difficult to compact, and the lotion tissue paper 1 is difficult to pick up (difficult to pull out). By setting the upper space within the above range, both ease of pulling out the lotion tissue paper 1 (easiness of gripping when pulling out the lotion tissue paper 1) and compactness of the carton 20 can be achieved.

Headspace is measured as follows. Remove the lid associated with the outlet 21 of the carton 20 . Next, as shown in FIG. 2, a JIS 15 cm ruler 70a (for example, Shinwa Measurement Co., Ltd. straight silver, material stainless steel, 10 g) is placed at the center of the window film 4 so as to be perpendicular to the slit 5 of the window film 4. Place it like this. After that, a JIS 15 cm ruler 70b (for example, Shinwa Measurement Co., Ltd. straight silver, stainless steel, 10 g) is inserted along the slit 5 of the window film 4, and the length of the sunken length is measured. Both ends of the slit 5 are similarly measured, and the average value of the three points is taken as the upper space. Note that the window film 4 may be made of a material other than a film (such as paper).

[Pull out resistance]
The carton 20 and the lotion tissue paper 1 preferably have a drawing resistance of 3 to 15 sets from the top (resistance when drawing from the carton 20) of 0.61 N or more and 1.30 N or less, and 0.71 N or more and 1.20 N or less. is more preferably 0.81 N or more and 1.10 N or less.

In addition, the carton 20 and the lotion tissue paper 1 preferably have a pull-out resistance (resistance when pulling out from the carton 20) of 3 to 20 sets on the lower side of 0.15 N or more and 0.60 N or less, more preferably 0.20 N or more and 0.60 N or less. It is more preferably 50N or less, and still more preferably 0.25N or more and 0.40N or less. The method for measuring the drawing resistance is as follows.

First, six cartons 20 containing lotion tissue paper 1 are prepared. Two paper strips (12 mm in the MD direction and 20 mm in the CD direction) 20a of the carton 20 are collected from one box. For 1 of the remaining 5 boxes, gently pull out and remove the first two sets of Lotion Tissue Paper 1. Next, as shown in FIG. 3, a paper piece 20a of a carton 20 is placed in the center of the width direction of the sheet from the third set so that the inner surface of the carton contacts the lotion tissue paper 1, and the upper edge of the lotion tissue paper 1 is placed on the carton. It is sandwiched between 20 pieces of paper 20a. Clip 50 (for example, TANOSEE double clip, edge width 19 mm) from above paper strip 20 a of carton 20 . The clip 50 has a height (length) of 11 mm and a width of 19 mm, and the paper strip 20a has a length of 12 mm and a width of 20 mm. Note that the size of the clip 50 and the size of the piece of paper 20a are not limited to these. The lotion tissue paper 1 is pulled up at a tensile speed of 1000 mm/min using a Tensilon tensile tester in a sandwiched state, and the maximum value of the resistance until it is pulled out from the carton 20 is measured. Similarly, the 4th set from the top to the 3rd set from the bottom are similarly measured, and the average value of the 4th to 15th set from the top and the 3rd to 20th set from the bottom is taken as the pull-out resistance. The remaining 4 boxes are measured in the same manner, and the average value of the 5 boxes is taken as the pull-out resistance.

Here, the 3 to 15 pull-out resistances from the top correspond to the resistance at the beginning of use of the tissue paper product 7, and the 3 to 20 pull-out resistances at the bottom correspond to the resistance at the end of use of the tissue paper product 7. . If the resistance at the beginning of use is high, it will be difficult to pull out, and if the resistance at the end of use is low, dropback will occur. In this respect, by optimizing the resistance at the beginning of use and the resistance at the end of use as described above, even if the number of sets of lotion tissue paper 1 is large as in the present invention, the carton height can be made compact and the tactile feeling can be improved. Among the good, the lotion tissue paper 1 with a good touch feeling can be easily pulled out at the beginning of use, and the occurrence of drop back can be reduced, making it easy to pull out.

[Static friction coefficient]
The carton 20 and the lotion tissue paper 1 preferably have a coefficient of static friction between the inner surface of the carton 20 and the lotion tissue paper 1 of 0.45 or more and 0.75 or less, and 0.50 or more and 0.70 or less. is more preferable, and more preferably 0.55 or more and 0.65 or less. Here, the coefficient of static friction is the coefficient of static friction between lotion tissue paper 1 (as it is in 2 plies) and the inner surface of carton 20 . The method for measuring the coefficient of static friction is as follows.

The above static friction coefficient can be measured according to ISO 15359 using an "Automatic Friction Tester NSF-100" manufactured by Nomura Shoji Co., Ltd. In ISO 15359, the same sample is used to measure the static friction coefficient three times, and the first and third values are adopted. In the present invention, the first value is adopted.

Specifically, it is measured as follows.

(1) First, the laminate of lotion tissue paper 1 is gently taken out from the carton 20 .

(2) Next, a sample of 18 cm in the long side direction × 6 cm in the short side direction is cut from the center of the bottom of the carton, and the inner surface of the carton (the surface in contact with the laminate of lotion tissue paper 1) is the measurement surface. Then, it is attached to the upper surface of the table 201 (see FIG. 4) of the measuring device 200 . Some cartons have perforations, etc. on the bottom surface of the carton.

(3) Next, the central part of the tissue laminate (for example, if the number of sets is 210, use the 105th set from the top. If the 105th set has wrinkles, the number of sets is Gently take one set (2 plies) of lotion tissue paper 1) and return it to its original folded state (measured in 2 sets (4 plies) ). An 18 cm x 6 cm sample is then cut and attached to the underside of thread 202 . At this time, the clip should be inserted into the carton in the same direction as in the actual machine, and both ends in the direction of 18 cm should be cut off so as not to affect the measurement.

(4) When the measurement is started and the table 201 is moved while the sample of the carton and the sample of the lotion tissue paper 1 are in contact, the frictional force of the sample contact surface is the limit for the amount of movement of the table 201. , slippage of the sample occurs. A static friction coefficient is derived based on the value of the load cell 203 at this time. The same sample is used to measure the coefficient of static friction three times, and the value of the first measurement is used. Then, the measurement is repeated 10 times and the average value is adopted.

Here, as in the present invention, even if the number of sets of the lotion tissue paper 1 is large, the carton height is made compact and the touch feeling is improved. When the value is low (that is, the lotion content is low), the feel tends to be poor, and if the value is high (ie, the lotion content is high), the film becomes snake-like and easily breaks when pulled out. The lotion tissue paper has a large number of sets and a good touch while improving the touch of the lotion tissue paper 1 by setting the coefficient of static friction between the lotion tissue paper 1 and the inner surface of the carton 20 within the above range. When inserting 1 into a compact carton 20, the possibility of snaking can be reduced. The snake state means that when the clip (laminate of the folded lotion tissue paper 1) is inserted into the carton 20, the laminate is in a snake state (a state in which the laminate is twisted up and down in a side view) in the carton 20. It refers to the state where it becomes a snake, and when it becomes a snake state, it becomes easy to tear when pulling out the tissue.

<Method for producing lotion tissue paper>
The lotion tissue paper 1 of the present invention can be manufactured, for example, in the order of (i) ply-up and calendering, (ii) chemical application and storage, and (iii) interfolding, as follows.

(i) Ply-up and calendering FIG. 5 shows an example of a machine winder 100. As shown in FIG.

Two primary rolls 11 (rolls after papermaking) are set in the machine winder 100, and two plies are piled up so that the Yankee side faces outward, and calendering is performed by the calendering machine 101, followed by secondary rolls. A raw fabric roll 12 is obtained. At this time, calendering may or may not be performed, but it is preferable to perform calendering.

By the way, regarding the papermaking process, unlike western paper, lotion tissue paper 1 with a relatively low basis weight as described above has low retention, so if a sizing agent is added, the inside of the system tends to become dirty, and productivity deteriorates. Cheap. If the FPR (first pass retention: primary yield rate) is low, the addition rate of the wet paper strength agent is increased when papermaking the primary raw roll 11 for a relatively large coating amount as described above. , the retention of the wet paper strength agent is low, the inside of the system becomes dirty, and the productivity tends to deteriorate. On the other hand, when the FPR is high, the formation is poor, and when the lotion is applied with a relatively large amount of coating as described above, paper breakage occurs in portions with a low fiber content, and productivity tends to deteriorate. The FPR is expressed by FPR={1-(concentration of paper stock in white water dewatered by wire (% by mass))/(concentration of stock in inlet (% by mass))}×100. . That is, the FPR is the rate at which the material in the stock accumulates on the wire. For example, the stock concentration of the inlet (the total concentration of papermaking raw materials (pulp) and other solid papermaking chemicals in the stock is 0.8% by mass, and the stock concentration in white water dehydrated with a wire is 0.3% by mass) In the case of , FPR = (0.8% - 0.3%) / 0.8% x 100 = {1 - (0.3% / 0.8%)} x 100 = 63%. Of this, 63% will be turned into paper, and 37% will be returned to raw materials without being turned into paper.

In consideration of this point, regarding the papermaking process for forming the primary paper roll 11, it is preferable that the sizing agent is not blended, and the added amount (solid content) of the wet paper strength agent is less than the pulp (solid content ) is preferably 0.05% to 0.35%, more preferably 0.10% to 0.30%, and still more preferably 0.15 to 0.25%. Further, FPR (first pass retention) is preferably 35% to 95%, more preferably 47% to 88%, even more preferably 60% to 82%.

(ii) Application (Coating) and Storage of Chemical Solution A chemical solution is applied off-line by a chemical coater device to the secondary material roll 12 after calendering to obtain a tertiary material roll 13 .

By applying the chemical to the secondary roll 12 off-line, there is a longer storage period before processing compared to online, so the chemical can be permeated and fixed to the tertiary roll 13 (see FIG. 6). It is also possible to uniformly apply a larger amount of chemicals to the secondary raw fabric roll 12 than on-line.

The method of applying the chemical solution to the secondary raw fabric roll 12 off-line can be a commonly used method such as inkjet printing, flexographic printing, gravure printing, roll coating, spray coating, etc., but flexographic printing is used. is preferred. Compared with other printing methods, flexographic printing allows a large amount of chemical solution to be applied, and the application amount can be easily adjusted.

When applying the chemical to the secondary roll 12, it is preferable to apply the chemical to only one side of the secondary roll 12 (either the inner side or the outer side). As a result, when the tertiary roll 13 is wound, the chemical solution applied to one side of the tertiary roll 13 easily permeates the other side in contact with the tertiary roll 13. As a result, the secondary roll 12 The chemical solution can be uniformly permeated and fixed to the tertiary raw fabric roll 13, rather than applying the chemical solution to both the outer winding side and the inner winding side of the . In addition, it is possible to make it easier to adjust the coating amount.

By the way, if the storage period from the production of the secondary roll 12 (secondary roll) after ply-up by the machine winder 100 to the coating is short, the effect of the wet paper strength agent will not be exhibited. Therefore, when applying a relatively large amount of lotion chemical solution as described above, paper breakage is likely to occur. On the other hand, if the storage period is long, the difference in water content between the upper and lower windings of the secondary roll 12 becomes large, and when a lotion chemical solution with a large coating amount is applied, the coating amount becomes uneven and the quality deteriorates. difference increases.

In consideration of this point, the storage period from the production of the secondary material roll 12 after plying by the machine winder 100 to the coating is preferably 24 hours to 504 hours, more preferably 48 hours to 336 hours. , 96 hours to 192 hours is more preferred.

By the way, the storage period of the tertiary roll 13 (storage time after the tertiary roll 13 is manufactured until it is processed into a product) is too short, the coating amount is relatively large as described above. When the lotion chemical solution is applied, the chemical solution is not uniform and the quality is uneven. On the other hand, if the storage period is too long, when a lotion chemical solution with a relatively large amount of coating is applied as described above, the shape of the original fabric will be lost during storage, and stable production will not be possible, resulting in a decrease in productivity. Considering this point, the period for storing the tertiary material roll 13 is preferably 12 hours to 504 hours, more preferably 24 hours to 336 hours, and even more preferably 96 hours to 192 hours.

As a method for storing the tertiary material roll 13, it is preferable to use a storage device described in Japanese Patent No. 5933384. FIG. 6 is a diagram showing an example of a storage device that stores the tertiary material roll 13. As shown in FIG. For example, the wrapping film 111 is tightly wound around the outer peripheral surface 13a of the tertiary roll 13 to which the chemical solution is applied, and the tightening band 112 that tightens the outer peripheral surface 13a is wound on the wrapping film 111, and the 3rd raw roll It is preferable to set and store the tertiary original fabric roll 13 with the winding core horizontal with respect to the installation surface 117 on the roll holder 113 on which the 13 is placed. According to this configuration, the outer peripheral surface 13 a of the tertiary roll 13 is tightened by the tightening band 112 in addition to the wrapping film 111 . The morphological stability of the Therefore, when the lotion chemical is applied in a relatively large coating amount as described above, the deformation of the tertiary web roll 13 after the application of the chemical can be effectively suppressed.

The roll holder 113 has a receiving surface 114 that receives and holds the lower portion of the tertiary material roll 13, and the receiving surface 114 is formed into a curved surface along the outer peripheral surface 13a of the tertiary material roll 13. is preferred. According to this configuration, the curved receiving surface 114 stably receives and holds the lower portion of the tertiary roll 13, which is most likely to be deformed by its own weight, thereby preventing deformation of the lower portion of the tertiary roll 13. can be prevented. As a result, the deformation of the tertiary material roll 13 can be more effectively suppressed, and the productivity is improved.

The roll holder 113 has a support portion 115 having a receiving surface 114 on its upper surface. It is preferable that a face member forming the receiving surface 114 is provided on the upper surface of the support portion 115 while no face member is provided on the lower surface of the support portion 115 . According to this configuration, the weight of the roll holder 113 can be reduced and the handleability can be improved by configuring the supporting portion 115 with a light laminated plate made of paper. Further, since there is no surface material on the lower surface of the support portion 115 that supports the tertiary film roll 13 , the support portion 115 bends well when a load is applied from the tertiary film roll 13 . On the other hand, if the lower surface of the support portion 115 has a surface material, the rigidity of the lower surface of the support portion 115 is increased, so that the deformation of the lower surface of the support portion 115 is suppressed. In this respect, according to the above configuration, the lower surface of the support portion 115 having no face material is well curved, so that the tertiary web roll 13 can be stored more stably. Note that the roll holder 113 may have a leg portion 116 that supports the support portion 115 by floating it from the installation surface 117 .

(iii) Interfolder processing The lotion tissue paper 1 is obtained by processing the sheet of the tertiary raw fabric roll 13 that has been coated with a chemical solution and stored for a predetermined period.

The processing of the tertiary rolls 13 can be performed by a known interfolder process, and the sheets of the tertiary rolls 13 are folded and intertwined while being alternately stacked and processed to pull out in a pop-up manner. It is preferable to obtain a possible lotion tissue paper. As long as it can be pulled out in a pop-up manner, the sheet of each tertiary roll 13 may be folded at the center by V-folding, Z-folding, or the like. A preferred example of folding method will be described later in detail with reference to FIGS. 7A to 7D.

Examples of the interfolder include a rotary interfolder and a multi-stand interfolder. Here, especially in the case of a multi-stand type interfolder, the take-out direction is the CD direction where the strength is weak, so there is a tendency for the tissue paper to be easily torn in the portion where a large amount of the chemical liquid permeates. In this respect, since the lotion tissue paper 1 of the present invention has the properties as described above, it is possible to reduce the problem of being easily torn even when using a multi-stand type interfolder.

Next, FIGS. 7A to 7D are schematic diagrams showing preferred examples of how to fold the clip 50 so that the upper portion of the clip 50 (first to fifth sets from the top) is folded parallel to the longitudinal direction of the carton 20. 1 is a schematic cross-sectional view as seen in FIG. FIG. 7E is a diagram showing how to fold the reference example. In Figures 7A-7D, for clarity of illustration, a set of lotion tissue papers 1 is indicated by a single line. In the following description, the same reference numerals may be given to components that may be the same, and the description thereof may be omitted. Further, in the following description, the term “folded portion” is a concept that includes a fold line (vertex in a cross-sectional view) when folded and a portion connected to the fold line. “Mountain fold” and “valley fold” are “mountain fold” when the outer side is convex, and “valley fold” when the inner side is convex. At this time, the “outside” is when the lower surface SL of the lower main portion of the lotion tissue paper 1 (the portion that is folded and placed below the next lotion tissue paper 1) is taken out from the carton 20. is the direction facing upwards.

In the reference example, as shown in FIG. 7E, all the lotion tissue papers 1-1P to 1-5P are folded only once (mountain-folded along the long side direction), and one lotion tissue adjacent in the vertical direction is folded. The ends of the tissue papers 1-1P to 1-5P are folded in such a manner that they are arranged between the upper and lower parts forming the other folded portion.

On the other hand, in a preferred folding method, the first lotion tissue paper 1-1 is folded two or more times along the long side direction, as shown in FIGS. 7A to 7D. As a result, when pulling out the first set of lotion tissue paper 1 from the slit 5 of the carton 20 (when taking out along the long side direction), the ease of pulling out is greatly improved compared to the reference example.

In a preferred folding method, as shown in FIGS. 7A to 7D, the first set of lotion tissue paper 1-1 is folded so that the folded portion is positioned below the outlet 21 of the carton 20. FIG. It should be noted that the area below the drawer opening 21 is a region that overlaps with the drawer opening 21 when viewed from above. As a result, when the first set of lotion tissue paper 1 is pulled out from the pull-out port 21 of the carton 20, the folded portion (for at least four plies) is pulled out first, so the first set of lotion tissue paper 1 can be pulled out. It can effectively improve the resistance to time tearing.

Specifically, the example shown in FIG. 7A is an example in which the first pair from the top (the first pair at the top) is folded inward. In this case, except for the first set of lotion tissue paper 1-1 ( 2nd to 5th sets of lotion tissue paper 1-2 to 1-5 in the illustration) are folded in the same manner as in the reference example described above. . A first set of lotion tissue paper 1-1 has folded portions 700 and 702 that are mountain-folded along the long side direction. Folded portion 700 is formed by folding at approximately half position in the short side direction, and is positioned below folded portion 702 . The folded portion 702 is formed by folding at a position of about 1/4 in the short side direction. The folded portion 702 is folded so that the end portion 70 is positioned inside the folded portion 700 (in the vertical direction, below the upper portion forming the folded portion 700).

In other words, in the example shown in FIG. 7A, the first set of lotion tissue paper 1-1 is viewed in the long side direction of the carton 20 (longitudinal direction of the slit 5), and the left side from the bottom end (left side in the figure, third One example of the first side, hereinafter the same) extends from the right side (the right side of the figure, an example of the second side, the same hereinafter), and is folded leftward and upward at the folding portion 700 (an example of the first folding portion), The rest of the folded-back portion extends from the right side to the left side and is folded back to the right and downward at a folding portion 702 (an example of a second folding portion). In addition, the second set of lotion tissue paper extends from the right side to the left side from the lower end when viewed in the long side direction of the carton 20, and is a normal central fold (an example of the fourth fold). It is folded to the right and to the top. Then, the lower end of the first set is positioned inside the normal center fold of the second set , and the end portion 70 (upper end) of the first set and the upper end of the second set are positioned inside the fold 700 .

The example shown in FIG. 7B is an example in which the first pair from the top (the first pair at the top) is folded outward. In this case, except for the first set of lotion tissue paper 1-1A (the second to fifth sets of lotion tissue paper 1-2 to 1-5 shown in the figure) are folded in the same manner as in the reference example described above. . The first set of lotion tissue paper 1-1A has a folded portion 700 mountain-folded along the long side direction and a valley-folded portion 702A along the long side direction. Folded portion 700 is formed by folding at about half position in the short side direction, and is positioned below folded portion 702A. The folded portion 702A is formed by folding at a position of about 1/4 in the short side direction. The folded portion 702A is folded so that the end portion 70 is positioned outside the folded portion 700 (in the vertical direction, above the upper portion forming the folded portion 700).

In other words, in the example shown in FIG. 7B, the first set of lotion tissue paper 1-1A extends from the left side to the right side from the lower end when viewed in the long side direction of the carton 20, and the folded portion 700 (first The rest of the folded portion extends from the right side to the left side and is folded back to the right and upward at the folding portion 702A (an example of the second folding portion). The second set of lotion tissue paper 1-2 extends from the right side to the left side from the lower end when viewed in the long side direction of the carton 20, and has a normal center folding portion (fourth folding portion example) is folded back to the right and up. Then, the lower end of the first set is positioned inside the normal center folded portion of the second set, the upper end of the second set is positioned inside the folded portion 700, and the lotion tissue paper 1-1A of the first set . The end 70 (upper end) is located at the top of the clip.

The example shown in FIG. 7C is an example in which the first pair from the top (the first pair at the top) and the second pair are folded together. In this case, other than the first set of lotion tissue paper 1-1B and the second set of lotion tissue paper 1-2B ( 3rd to 5th sets of lotion tissue paper 1-3 to 1-5 in the illustration), It is folded in the same manner as the reference example described above. The first set of lotion tissue paper 1-1B has folded portions 700B and 704 (examples of first and second folded portions) mountain-folded along the long side direction and valley-folded along the long side direction. It has a folded portion 706 (an example of a third folded portion). Folded portion 700B is formed by folding at a position of about 1/4 in the short side direction, and is positioned below folded portions 704 and 706. FIG. The folded portion 704 is formed by folding at a position of about 1/2 in the short side direction. Folded portion 706 is formed by folding at a position of about 1/4 in the short side direction. The folded portion 704 is folded so that the end portion 70 is positioned inside the folded portion 700B (in the vertical direction, below the upper portion forming the folded portion 700B).

Also, in the example shown in FIG. 7C, the second set of lotion tissue paper 1-2B is horizontally reversed with respect to the above-described lotion tissue paper 1-1A. Specifically, the second set of lotion tissue paper 1-2B has a folded portion 800 (an example of a fourth folded portion) mountain-folded along the long side direction and a valley-folded along the long side direction. 802 (an example of a fifth folding portion). Folded portion 800 is formed by folding at approximately half position in the short side direction, and is positioned below folded portion 802 . The folded portion 802 is formed by folding at a position of about 1/4 in the short side direction. The folded portion 802 is folded so as to be positioned outside the folded portion 800 (in the vertical direction, above the upper portion forming the folded portion 800).

In the example shown in FIG. 7C, the first set of lotion tissue paper 1-1B and the second set of lotion tissue paper 1-2B have the lotion tissue paper 1 at the lower end 71 of the lotion tissue paper 1-1B. -located inside the folded portion 800 of the lotion tissue paper 1-2B, the folded portion 802 of the lotion tissue paper 1-2B is located inside the fold portion 700B of the lotion tissue paper 1-1B, and the upper end of the lotion tissue paper 1-2B 80 is located inside the folded portion 704 of the lotion tissue paper 1-1B, and the folded portion 706 of the lotion tissue paper 1-1B is located inside the folded portion 802 of the lotion tissue paper 1-2B. folded into

In other words, in the example shown in FIG. 7C, the first set of lotion tissue paper 1-1B extends from the left side to the right side from the end portion 71 (lower end) when viewed in the long side direction of the carton 20, and is folded. Folded back leftward and upward at portion 700B, the folded remaining portion extends from right to left, is folded back rightward and downward at folding portion 704, and the folded remaining portion further extends. extends from the left side to the right side, and is folded back to the left side and to the bottom side at the folding portion 706. The second set of lotion tissue paper 1-2B is viewed in the long side direction of the carton 20, and from the bottom end, It extends from the right side to the left side and is folded back to the right side and up at the folding portion 800 , and the rest of the folded portion extends from the left side to the right side and is folded back to the left side and up at the folding portion 802 . The first set of end portions 71 (lower end) is positioned inside the folded portion 800, the folded portion 802 is positioned inside the folded portion 700B, and the second set of end portions 80 (upper end) is positioned inside the folded portion 704. ) is positioned, and the folded portion 706 is positioned inside the folded portion 802 .

The example shown in FIG. 7D is another example in which the first and second sets from the top are each folded two or more times. In this case, other than the first set of lotion tissue paper 1-1C and the second set of lotion tissue paper 1-2C ( 3rd to 5th sets of lotion tissue paper 1-3 to 1-5 in the illustration), It is folded in the same manner as the reference example described above. The first set of lotion tissue paper 1-1C has a folded portion 708 that is valley-folded along the long side, folded portions 710 and 712 that are mountain-folded along the long side, and and a folded portion 714 that is valley-folded. Folded portion 708 is formed by folding at a position less than 1/4 in the short side direction, and is positioned below folded portions 710-714. The distance from the apex (folding line) of the folded portion 708 to the apex (folding line) of the folded portion 710 is about 1/2 in the short side direction, and the folded portion 712 is formed to be positioned near the center of the carton 20. be. Also, the second set of lotion tissue paper 1-2C has folded portions 800C and 804 that are mountain-folded along the long side direction. The folded portion 800C is formed by folding at about 1/2 position in the short side direction. The folded portion 804 is formed by folding at a position of about 1/4 in the short side direction. The folded portion 804 is folded so that the end portion 80 is positioned inside the folded portion 710 (in the vertical direction, below the upper portion forming the folded portion 710).

In other words, in the example shown in FIG. 7D, the first set of lotion tissue paper 1-1 extends from the right side to the left side from the lower end when viewed in the long side direction of the carton 20, and the folded portion 708 (first The rest of the folded portion extends from the left side to the right side, and is folded leftward and upward at the folding portion 710 (an example of the second folding portion). , the further folded-back remaining portion extends from the right side to the left side, is folded back to the right and downward at a folding portion 712 (an example of a third folding portion), and the further folded-back remaining portion extends from the left side to the right side, and is folded leftward and downward at a folding portion 714 (an example of the last folding portion). In addition, the second set of lotion tissue paper 1-2C extends from the right side to the left side from the lower end when viewed in the long side direction of the carton 20, and extends from the right side to the left side at the folding portion 800C (an example of the fourth folding portion). It is folded upward, and the rest of the folded portion extends from the left side to the right side and is folded leftward and downward at a folded portion 804 (an example of a fifth folded portion). Folding portion 708 is located inside folding portion 800C, folding portion 804 is located inside folding portion 710, and folding portions 712 and 714 are located above folding portion 804. FIG.

Here, as described above, even in the case of the lotion tissue paper 1 that is compact, has a large number of sets, and has a large amount of coating, by realizing the folding method shown in FIGS. tear resistance can be improved. That is, in the case of the normal folding method shown in FIG. 7E, when pulling out the first pair from above, one pair (two plies) is pulled out. On the other hand, in the case of the folding method shown in FIG. 7A (substantially similar to the folding methods shown in FIGS. 7B to 7D), the folding portion 702 is pulled out by holding the vicinity of the folding portion 702. The upper side and the lower side of the folded portion 702 are pinched together and pulled out. Therefore, four plies, which is twice as much as in FIG. 7E, are pulled out, and the strength is also improved. As a result, in the case of folding shown in FIG. 7A (substantially the same in the cases of folding shown in FIGS. 7B to 7D), compared to the case of folding as shown in FIG. 7E, the first set of lotion tissues It is possible to effectively improve the resistance to tearing of the paper 1 when it is pulled out. In the example shown in FIG. 7C, the first set of lotion tissue paper 1-1B and the second set of lotion tissue paper 1-2B are pulled out at the same time. It will be pulled out, and the strength will be further improved.
<Summary of usefulness of tissue paper products and lotion tissue paper>
By the way, since lotion tissue is generally a luxury product, it is often made thicker, and in order to improve its appearance, it is generally put in a high (large) carton. .

In recent years, however, from the viewpoint of physical distribution, storage space, shelf size, etc., compact products with large capacity are preferred.

In this respect, in the case of normal tissue paper, the carton can be made compact by reducing the thickness of the paper with a calendar.

In addition, in the case of normal tissue paper, the clip can be relatively easily inserted into the carton because the coefficient of friction between the tissue paper and the carton is low.

On the other hand, in the case of lotion tissue paper, the coefficient of static friction between the lotion tissue paper and the inner surface of the carton is high, and when the clip is inserted into the carton, the clip tends to snake and is easily torn when pulled out. .

Even in the case of lotion tissue paper, if the basis weight is low and the volume of the clip is low, the snaking state is less likely to occur, but the texture of the lotion tissue paper is inferior.

In this regard, according to the tissue paper product 7 of the present invention, as described above, the static friction coefficient can be kept within the range described above while the basis weight is set within the range described above, so that the tactile sensation is good. It is possible to reduce the possibility that the clip will be in a snake state when inserting the clip 50 into the carton 20 while maintaining a basis weight such as

Here, since the lotion tissue paper folded by the rotary interfolder is folded softly (the density of the clip is low), it is unlikely to become a snake when the clip is inserted into the carton. However, the lotion tissue paper folded by the rotary interfolder, on the other hand, is bulky because it is softly folded, and the carton cannot be made compact.

On the other hand, in the case of lotion tissue paper folded with a multi-stand type interfolder, it is folded firmly (the density of the clips is high), so the height of the carton can be made compact, but when the clips are inserted into the carton, the clips are in a snake state. easy to become This is a problem when folding lotion tissue paper.

In this regard, according to the tissue paper product 7 of the present invention, as described above, even when the lotion tissue paper 1 is folded by the multi-stand interfolder, the coefficient of static friction can be adjusted within the range as described above. The clip 50 is less likely to be in a snake state when it is inserted into the body. As a result, the height of the carton can be made compact, and the possibility of the clip being snaked when the clip is inserted into the carton can be reduced.

In addition, in the case of lotion tissue paper 1, if the paper thickness is reduced by a calendar, the specific volume will be low, so it will be difficult for the lotion to penetrate uniformly into the tissue, and the chemical solution will become uneven (where the chemical solution is large and the chemical solution is small). part comes out). As a result, the strength of the portion where a large amount of the chemical solution permeates becomes weak, and the lotion tissue paper 1 becomes easily torn. In particular, in the case of a multi-stand type interfolder, the take-out direction is the CD direction where the strength is weak, so the part where a large amount of the chemical solution permeates is likely to break.

In contrast, according to the tissue paper product 7 of the present invention, as described above, the tensile elongation at break (longitudinal elongation) during DMDT measurement after application of the chemical solution is adjusted within a predetermined range, so that the chemical solution is applied uniformly. easier to penetrate. As a result, it is possible to solve the problem (e.g., brittleness) caused by non-uniform permeation of the chemical solution.

That is, according to the tissue paper product 7 of the present invention, even if the paper thickness is relatively low within a range in which the tactile sensation due to the decrease in basis weight is not impaired, the problem of being easily torn can be reduced. If the paper thickness can be made relatively low, the height of the carton can be made compact even if the number of sets is relatively large.

In this way, according to the tissue paper product 7 of the present invention, although the number of sets is relatively large, the carton height is relatively low and compact, the sheets are relatively resistant to tearing, and the texture is relatively good. A lotion tissue paper 1 can be included.

Also, the lotion tissue paper 1 can contribute to a compact carton height even when the number of sets is relatively large, and the sheets are relatively resistant to tearing and have relatively good tactile properties.

By the way, when the coating amount of the chemical solution for the lotion tissue paper 1 is relatively high as described above, if the paper thickness is too low with a calender, it feels flimsy. In addition, since the strength is low, in the case of processing with a multi-stand type interfolder, the paper tends to tear when compressing the lotion tissue paper 1 with the pull unit. For example, when the first set of lotion tissue paper 1 is folded from the top, the first set of lotion tissue paper 1 and the second set of lotion tissue paper 1 are folded (for example, in FIG. 7B, the fold in the first set 702A, and the portion in contact with the folded portion 702A in the second set ) are torn along the MD direction.

On the other hand, less compression in the pull unit reduces tearing of the paper, but the clip becomes bulkier and may not be able to be inserted when the clip is inserted into the carton.

In addition, when the chemical solution content is relatively high as described above, online coating as in Japanese Patent No. 4676564 (coating when forming 2 plies with a winder) tends to break the paper, resulting in increased productivity. but rather worse.

On the other hand, according to the tissue paper product 7 of the present invention, as described above, even if the coating amount of the chemical solution is relatively large, the clip insertion direction (DMDT), the withdrawal direction (DCDT), the strength ratio (DMDT /DCDT) can be adjusted to a certain range by beating or the like, so that the quality (tactile sensation, resistance to tearing) can be improved.

In addition, by using the tertiary roll 13 for offline coating, wrinkles are less likely to occur as in online coating (folding with an interfolder while coating, as in JP 2016-60982), and the paper thickness ( clip volume) can be set within a certain range.

Further, by using the tertiary roll 13 for off-line coating, it is possible to reduce paper breakage during coating and increase productivity.

In addition, by appropriately setting the storage period from the production of the secondary roll 12 (secondary roll) after ply-up by the machine winder 100 to the coating as described above, it is possible to prevent breakage during coating. It is possible to reduce the unevenness of the coating amount while reducing the amount of paper.

In addition, by appropriately setting the storage period of the tertiary roll 13 (storage time after manufacturing the tertiary roll 13 until it is processed into a product) as described above, unevenness in the amount of coating is reduced. At the same time, it is possible to reduce the deformation of the original fabric during storage, thereby improving productivity.

Therefore, according to the present invention, even if the number of sets is large, it is possible to manufacture (produce) efficiently so that the product is compact and has good quality (tactile feel, resistance to tearing).

Hereinafter, the present invention will be described in detail with reference to examples. It should be noted that the present invention is by no means limited to the examples shown below.

<Examples 1 to 33, Comparative Examples 1 to 16>
As shown in Tables 1 to 4, multiple types of lotion tissue paper (hereinafter abbreviated as "tissue") with different grammage, paper thickness, specific volume, etc. were manufactured, and monitors (human ) made the following evaluations. Each tissue was stacked in a predetermined number of sets in a multi-stand type interfolder so that the direction of pulling out the tissue was in the CD direction, and the stack was housed in various cartons.

Also, the softness of the tissue, uneven texture, resistance to tearing of the tissue (including when pulling out), ease of pulling out the tissue (upper pull-out resistance, that is, at the beginning of use), no dropback (lower pull-out resistance) , that is, the end of use), ease of gripping when pulling out tissues (upper space), frequency of replacement (number of sets), compactness of cartons (carton height), productivity (dirt in the system during the papermaking process, The effect of the wet paper strength agent to be blended, paper breakage during coating due to deterioration of formation, good raw material shape after coating, and paper breakage due to decrease in strength) were evaluated on a five-point scale.

The grammage and the like of the sheet were measured as follows.

Basis weight of sheet: Measured based on JIS P 8124 and converted to per sheet.

Paper thickness: Measured using a thickness gauge (dial thickness gauge "PEACOCK" manufactured by Ozaki Seisakusho Co., Ltd.). The measurement conditions were a measurement load of 250 gf and a probe diameter of 30 mm. In addition, one measurement was performed by stacking 5 sets of 2-ply lotion tissue paper , the measurement was repeated 10 times, and the measurement results were averaged. In addition, when measuring the paper thickness of the carton, one sheet was used.

The basis weight, paper thickness, strength, draw resistance, and the like were measured after holding in equilibrium under the temperature and humidity conditions specified in JIS P 8111 (23±1° C., 50±2% RH).

The following evaluation was performed by 20 monitors.

Tactile feel of the tissue: The tactile feel (softness) when the tissue pulled out from the carton was unfolded and used (to blow one's nose, wipe off dirt, etc.) and the voluminous feel when held in the hand were evaluated. In addition, unevenness in tactile sensation was evaluated.

Tear resistance when pulling out the tissue: The resistance to tearing when the tissue was pulled out from the carton was evaluated.

No drop back: At the end of use, it was evaluated whether there was any drop back when using the tissue.

Ease of gripping when pulling out tissues: The ease of gripping when pulling out the first set of tissues from the top of the carton was evaluated.

Replacement frequency (number of sets): The replacement frequency of tissue paper products was evaluated.

Compactness of carton: The compactness of the carton (tissue paper product) was evaluated.

Each productivity was evaluated by actual production (prototype).

The evaluation was given as "3" when equivalent to the conventional product, "4" when slightly superior, and "5" when excellent. Similarly, "2" was given when inferior to "3", and "1" was given when significantly worse. A rating of 3 to 5 is fine.

From Tables 1 to 4, according to the present invention, the tactile sensation of the tissue, the unevenness of the tactile sensation, the resistance to tearing when the tissue is pulled out, the ease of pulling out the tissue, the absence of drop back, and the ease of gripping when pulling out the tissue. , exchange frequency, compactness of the carton, and productivity were all good.

1 lotion tissue paper 4 window film 5 slit 7 tissue paper product 12 secondary roll 13 tertiary roll 20 carton 21 outlet 700B folding section 704 folding section 706 folding section 800 folding section 802 folding section

Claims (11)

A method for manufacturing a tissue paper product manufactured by laminating a plurality of sets of two-ply sheets of lotion tissue paper coated with a chemical solution and packing them in a carton that is a substantially rectangular parallelepiped storage box,
The lotion tissue paper is
basis weight per sheet ply is 12 g/m ² or more and 20 g/m ² or less;
The number of pairs is 182 or more and 250 or less,
DCDT is 0.5N/25mm or more and 2.3N/25mm or less,
DMDT is 2.2N/25mm or more and 4.7N/25mm or less,
DMDT/DCDT is 1.9 or more and 4.4 or less,
Housed in the carton with a height of 65 mm or more and 95 mm or less,
3 to 15 sets of drawing resistance from the top are 0.61 N or more and 1.30 N or less,
3 to 20 sets of drawing resistance from the bottom is 0.15N or more and 0.60N or less,
a content of the chemical solution per ply of the sheet is 1.7 g/m ² or more and 3.7 g/m ² or less;
In the manufacturing method, a primary roll is produced in a papermaking facility, a secondary roll is produced by plying the produced primary roll with a winder, and the produced secondary roll is produced. A chemical solution is applied to the roll to manufacture a tertiary raw fabric, and the manufactured tertiary raw fabric is processed by a multi-stand interfolder so that the drawing direction of the lotion tissue paper is in the CD direction. (2) A method for producing a tissue paper product, comprising packing a laminate obtained by folding and stacking a plurality of sets of the lotion tissue paper into a box. 2. The method for producing a tissue paper product according to claim 1, wherein the storage period from the production of the secondary stock to the coating is 24 hours or more and 504 hours or less. 3. The method for producing a tissue paper product according to claim 1, wherein the storage time from the production of the tertiary raw fabric to the processing into the product is 12 hours or more and 504 hours or less. Forming the laminate in a state where the first set of the lotion tissue paper is folded two or more times along the long side direction,
The method for producing a tissue paper product according to any one of claims 1 to 3, wherein the first set of lotion tissue paper is folded so that the folding portion is positioned below the outlet of the carton. A first set of the lotion tissue paper extends from the first side to the second side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the first side and upward at the first folding portion. , the folded remaining portion extends from the second side to the first side and is folded back to the second side and downward at the second folding portion;
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. and
The lower end of the first set of lotion tissue paper is positioned inside the fourth folded portion, and the upper end of the first set of lotion tissue paper and the second set of lotion tissue paper are positioned inside the first fold portion. 5. The method of making a tissue paper product according to claim 4, wherein the upper end of the A first set of the lotion tissue paper extends from the first side to the second side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the first side and upward at the first folding portion. , the folded remaining portion extends from the second side to the first side and is folded back to the second side and upward at the second folding portion;
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. and
The lower end of the first set of the lotion tissue paper is positioned inside the fourth folded portion, the upper end of the second set of the lotion tissue paper is positioned inside the first folded portion, and the lotion tissue paper 5. The method of manufacturing a tissue paper product according to claim 4, wherein the top edge of the first set is located on the uppermost side of said laminate. A first set of the lotion tissue paper extends from the first side to the second side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the first side and upward at the first folding portion. , the folded remaining portion extends from the second side to the first side, is folded back to the second side and downward at a second fold, and the further folded remaining portion is , extends from the first side to the second side, and is folded back to the first side and the lower side at the third fold,
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. , the folded remaining portion extends from the first side to the second side and is folded back to the first side and upward at the fifth folding portion;
The lower end of the first set of lotion tissue paper is positioned inside the fourth fold, the fifth fold is positioned inside the first fold, and the second fold is placed inside the second fold. 5. The method of manufacturing a tissue paper product according to claim 4, wherein the upper end of the second set of lotion tissue paper is positioned, and the third fold is positioned inside the fifth fold. A first set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the first folding portion. , the folded-back remaining portion extends from the first side to the second side, is folded back to the first side and upward at a second folding portion, and the folded-back further remaining portion extends to the second side side to the first side, is folded back to the second side and downward at the third folding portion, and the remaining portion of the folded portion extends from the first side to the second side, and finally to the second side. It is folded back to the first side and the lower side at the folding part of
A second set of the lotion tissue paper extends from the second side to the first side from the lower end when viewed in the longitudinal direction of the carton, and is folded back to the second side and upward at the fourth folding portion. , the folded remaining portion extends from the first side to the second side and is folded back to the first side and downward at the fifth folding portion;
The first folding portion is positioned inside the fourth folding portion, the fifth folding portion is positioned inside the second folding portion, and the fifth folding portion is positioned above the fifth folding portion. 5. The method of making a tissue paper product according to claim 4, wherein three folds and said last fold are located. No sizing agent is blended in the papermaking process, the amount of wet paper strength agent added is 0.05% or more and 0.35% or less based on the pulp in comparison with the solid content, and FPR (first pass retention) is The method for producing a tissue paper product according to any one of claims 1 to 8, wherein the content is 35% or more and 93% or less. The method for producing a tissue paper product according to any one of claims 1 to 9, wherein the lotion tissue paper has a chemical solution content of 10% by mass or more and 22% by mass or less. The method for producing a tissue paper product according to any one of claims 1 to 10, wherein the carton has an upper space of 2 mm or more and 20 mm or less from one set of lotion tissue paper.

Images