JP6284185B2 - Toilet roll manufacturing method and toilet roll - Google Patents

Description

  The present invention relates to a method for manufacturing a toilet roll in which a plurality of ply toilet paper is wound in a roll shape, and the toilet roll.

  A toilet roll in which a belt-like toilet paper is rolled up is well known. Among these toilet rolls, there is one in which a plurality of toilet paper base papers are laminated and integrated to form a plurality of ply toilet paper. In the multi-ply type, the laminated base papers are embossed and integrated (also called edge embossing, contact embossing, etc., hereinafter referred to as edge embossing in the present invention and specification). The ply is prevented from peeling off.

  This edge embossing is performed by embossing a superposed base paper with a predetermined embossing pattern by using a relatively narrow convex embossing roll (also referred to as an edge embossing roll) to which a plurality of unit convex embossing is applied in a predetermined embossing pattern. Apply.

  Conventionally, the following problems have occurred with this edge embossing. That is, at the time of application, the convex embossing roll may jump or rattle due to vibrations (this kind of jumping is also referred to as bounce in the industry), and the convex embossing roll may tilt and come into contact with the paper without being face-to-face. (In this industry, tilting and touching the paper surface is also called per piece), this bounce or per piece produces a part that is not embossed, or a hole is formed by excessive pressure, In some cases, the product looked bad. In addition, in the conventional edge embossing, the imparted portion swells into a rib shape, which may result in a poor-looking product.

Patent No. 5399727 Japanese Patent No. 4627892 Japanese Patent No. 4450421 Japanese Patent No. 5331530 Patent No. 5005085

  Therefore, the main problem of the present invention is to solve the manufacturing problems related to the above-mentioned edge embossing, prevent ply peeling, prevent bounce and piece contact, prevent formation of rib-like parts when rolled, An object of the present invention is to provide a toilet roll manufacturing method and a toilet roll excellent in wear resistance of an edge embossing roll.

  The present invention that has solved the above problems and the effects thereof are as follows.

<Invention of Claim 1>
A method of manufacturing a toilet roll having an edge embossing step in which a plurality of strip-shaped toilet paper base sheets are stacked and embossed with a convex embossing roll in a continuous direction, and laminated and integrated into a ply structure toilet paper. Because
A convex embossing pattern of the convex embossing roll;
Convex emboss rows in which unit convex embosses are arranged at regular intervals in the rotation direction are arranged in 2 to 5 rows in the width direction parallel to the rotation axis direction, and the unit convex embosses are 0.3 in parallel to the width direction. It has a side of ˜0.7 mm on the front side in the rotational direction, the top surface area is 0.035 to 0.49 mm ² , the top surface area ratio of unit convex emboss is 2 to 6%, and the width direction The unit convex embossing in the leftmost row and the rightmost convex embossing row is arranged so that a pair of unit convex embosses closest in the rotation direction partially overlap in the rotation direction.
A method for producing a toilet roll, characterized by having a convex embossed pattern.

<Invention of Claim 2>
The unit convex emboss is a mountain shape that spreads from the top to the reference surface of the convex embossing roll, and the slope from the top surface to the reference surface of the convex embossing roll is predetermined between the top surface and the reference surface. The manufacturing method of the toilet roll of Claim 1 which has a 1st inclined surface to a height position, and a 2nd inclined surface looser than the said 1st inclined surface from the predetermined height position to a reference plane. .

<Invention of Claim 3>
The method for producing a toilet roll according to claim 1 or 2, wherein the unit convex emboss has a mountain shape that spreads from the top surface toward the convex emboss roll reference surface, and the base portion is chamfered.

<Invention of Claim 4>
A toilet roll in which a plurality of strip-shaped toilet paper base papers are laminated and integrated by edge embossing applied in a continuous direction and rolled into a roll shape.
The edge embossing pattern;
Concave embossed rows in which unit concave embosses are arranged at regular intervals in the continuous direction of the toilet paper are arranged in 2 to 5 rows in the width direction orthogonal to the continuous direction, and the unit concave embosses are parallel to the width direction. It has a side of 0.3 to 0.7 mm on the winding start side of the toilet roll, the bottom area is 0.035 to 0.49 mm ² , the bottom area ratio is 2 to 6%, and the width direction The unit concave embossing in the leftmost row and the rightmost concave embossing row is arranged so that a pair of unit concave embosses closest in the continuous direction partially overlap in the continuous direction.
A toilet roll characterized by an edge embossed pattern.

  According to the present invention as described above, the manufacture of a toilet roll excellent in the prevention of ply peeling, the prevention of bounce and piece contact, the prevention of the formation of rib-like parts when rolled, and the wear resistance of the edge embossing roll Methods and toilet rolls are provided.

It is a figure for demonstrating the outline of the toilet roll manufacturing method which concerns on embodiment of this invention. It is a figure for demonstrating the provision aspect of the edge embossing which concerns on embodiment of this invention. It is a figure for demonstrating the convex embossing roll which concerns on the Example of this invention. It is a figure for demonstrating the convex embossing pattern which concerns on the Example of this invention. It is a figure for demonstrating the other convex embossing pattern which concerns on the Example of this invention. It is sectional drawing of the unit convex embossing which concerns on the Example of this invention. It is sectional drawing of the other unit convex embossing which concerns on the Example of this invention. It is a perspective view of the toilet roll which concerns on embodiment of this invention. It is a figure for demonstrating the testing method of ply peeling prevention property. It is a figure for demonstrating the convex embossing pattern which concerns on the comparative example 1. FIG. It is a figure for demonstrating the convex embossing pattern which concerns on the comparative example 2. FIG. It is a figure for demonstrating the convex embossing pattern which concerns on the comparative example 3. FIG. It is a figure for demonstrating the convex embossing pattern which concerns on the prior art example 1. FIG.

Next, an embodiment of the present invention will be described in detail with reference to FIGS. Although not limited, this manufacturing method is suitable for the production of 2-ply or 3-ply toilet rolls, and is particularly suitable for producing 2-ply toilet rolls. Moreover, it is suitable for manufacturing a toilet roll on which toilet paper having a paper thickness of 100 to 350 μm and a rice basis weight per ply of 11.0 to 25.0 g / m ² is wound.

  As shown in FIG. 1, the manufacturing method of the toilet roll 10 according to this embodiment includes a step (A) for manufacturing a long paper tube 30 and a log for manufacturing a log using the long paper tube 30. A manufacturing process (B), and a cutting process (C) for cutting the log into individual toilet rolls.

  In the paper tube manufacturing process of this embodiment, as shown in FIG. 1 (A), one of the two strip-shaped paper tube base papers 31 and 32 fed out from the raw rolls 31A and 32A is used. Glue is applied to one side of the paper tube base paper 31, and the other paper tube base paper 32 is partially overlapped in the width direction on the surface of the one paper tube base paper 31 to be glued. The surface that does not contact the mandrel shaft 52 is the surface facing the mandrel shaft 52, that is, the surface that becomes the inner surface of the paper tube, and the paper tube base papers 31 and 32 are spirally wound around the mandrel shaft 52 to be continuously formed into a cylindrical shape. The spiral-shaped long paper tube 30 is formed by cutting the shaped portion with a cutter at a width more than a multiple of the toilet roll.

  On the other hand, the log 70 is manufactured in the log manufacturing process ((B) in FIG. 1) in parallel with or after the manufacturing of the long paper tube 30 described above. The log 70 is a general term in the industry, and is an intermediate product having the same diameter as that of the toilet roll 10 as a final product and having a width equal to or more than a plurality of final products.

  In the manufacturing method of the toilet roll 10 according to the present embodiment, wide toilet paper base sheets 71 and 71 corresponding to the width of the log 70 are wound in advance in the log manufacturing step (B) as shown in FIG. Further, the toilet paper base sheets 71 and 71 are respectively fed out from the plurality of original fabric rolls 71A and 71A, overlapped by the overlapping portion 81, and then wound around the long paper tube 30. Then, particularly during the period from the overlapping to the winding, the overlapped toilet paper base 72 is passed through the edge embossing means 56 constituted by the convex embossing roll 5 and the receiving roll 6 for receiving it, and the edge embossing is performed. Is characteristically applied and laminated and integrated. In the illustrated example, two toilet paper base sheets 71 and 71 are stacked to produce a two-ply toilet paper toilet roll. If three toilet paper base sheets are stacked, a three-ply toilet roll is used. Can also be manufactured.

  The position to which edge embossing is applied is a position that becomes both edges of the toilet paper 1 constituting the log 70 when it is cut into the toilet roll 10 in the subsequent cutting step (C), more specifically. It is good to form in the position used as the edge part of the range within 50 mm from both edges.

And in the manufacturing method of the toilet roll 10 which concerns on this embodiment, the convex embossing pattern in the convex embossing roll 5 which provides this edge embossing is as follows characteristically. That is, as shown in FIGS. 3 and 4, the convex embossed pattern is formed by arranging convex embossed rows 20L, 20L... In which unit convex embosses 20 are arranged at regular intervals in the rotational direction, in the width direction parallel to the rotational axis direction. 2 to 5 rows are arranged (the figure shows three rows), and the unit convex emboss 20 has a side 20E of 0.3 to 0.7 mm parallel to the width direction on the front side in the rotational direction. It is what you have. Furthermore, the area of the top surface 20x of the unit convex emboss 20 is 0.035 to 0.49 mm ^2, and the top surface area ratio of the unit convex emboss 20 is 2 to 6%. In this convex emboss pattern, the top surface area of the unit convex emboss 20 and its top surface area ratio are very small. In other words, it is a convex emboss pattern in which small concave embosses are sparsely arranged on the paper surface. Therefore, in this convex emboss pattern, the edge emboss is not conspicuous, and the edge emboss application portion is not conspicuous in the rib shape when it is formed into a roll. Furthermore, even if it is the unit convex embossing 20 with a small top | upper surface area, it forms in the convex embossing row | line 20L, and arrange | positions 2-5 rows in the width direction, and the part pushed by one small unit convex embossing 20 ( Even if the unit concave embossing (when transferred to the paper surface) is small, the proximity of the unit embossing prevents the ply from peeling off.

  The top surface area ratio is the total top surface area (the number of top surfaces x one top surface area) in the emboss pattern range that appears repeatedly, such as the range indicated by the symbol X surrounded by the two-dot chain line in FIG. It is a ratio. If the pitch in the rotation direction of the unit convex embosses and the spacing between the convex embossed rows are constant, it is calculated by ((one top surface area × number of rows) / (construction width L1 × pitch L5)) × 100. The construction width L1 is a width from the right end in the width direction of the rightmost row to the left end in the width direction of the leftmost row, and the pitch L5 is a distance between the sides 20E of the unit convex embosses in the rotation direction.

  In the present embodiment, the construction width L1 is particularly preferably 3.00 to 13.00 mm. That is, it is desirable that each convex embossed row 20L is accommodated within a range of 3.00 to 13.00 mm in the width direction. The pitch L5 is preferably 4.5 to 5.5 mm.

  Moreover, the unit convex embossing 20 according to the present embodiment has a side 20E of 0.3 to 0.7 mm parallel to the width direction parallel to the rotation axis direction on the front side in the rotation direction as described above. ing. Therefore, in the convex embossing roll 5, when the top surface 20x of the unit convex embossing 20 is pressed against the paper surface, the side 20E comes into contact with the paper surface. If the unit convex emboss is a pattern that touches the apex of a rhombus or triangle or a circular pattern, when the unit convex emboss starts to touch the paper surface, excessive force will be applied to one point of the vertex or circle. However, the convex embossing pattern according to the present embodiment always causes the top surface 20x of the unit convex emboss 20 to come into line contact with the paper surface from the side 20E. Thus, the wear of the unit convex emboss 20 is reduced. That is, the convex embossing roll 5 is excellent in wear resistance. Note that if the side 20E is less than 0.3 mm, the effect of preventing wear is hardly exhibited, and if it exceeds 0.7 mm, the size of the unit convex emboss 20 becomes large and the edge emboss becomes conspicuous. In particular, when the thickness is in the range of 0.3 to 0.7 mm, sufficient wear resistance is exhibited at a general toilet roll processing speed.

  Here, the specific shape of the unit convex emboss 20 is not limited as long as it has such a side 20E, but a shape that does not spread from the side 20E toward the rear in the rotation direction is desirable. That is, a square or a rectangle having sides along the rotation direction from both ends of the side 20E as shown in FIGS. 3 and 4 or a narrowing toward the rear in the rotation direction from the side 20E as shown in FIG. A desirable triangle or a trapezoid that narrows toward the rear in the rotational direction from the side 20E is desirable. When the contact surface does not spread from the side 20E to the paper surface, and the shape is the same or smaller, the edge embossing becomes difficult to stand out and the wear prevention property of the convex embossing roll 5 is more excellent. .

  Furthermore, since the convex embossing pattern according to the present embodiment is arranged so that the convex embossing rows 20L are arranged in 2 to 5 rows in the width direction, the convex embossing roll 5 comes to come into stable contact with the paper surface, It is difficult for the convex embossing rolls 5 to come into contact with each other in an inclined manner with respect to the paper surface and the phenomenon of bounce. In particular, in the convex embossing pattern according to the present embodiment, the unit convex embossing in the leftmost and rightmost convex embossing rows 20L in the width direction is performed so that the effect of preventing such as one-sided hitting is specially exhibited. A set of 20 unit convex embosses located closest to each other in the rotation direction (for example, a set surrounded by 20Y in FIGS. 4 and 5) is arranged so as to partially overlap in the rotation direction (FIG. 4). In FIG. 5, the overlap of unit convex embosses 20Y closest to each other in the rotation direction of the unit convex embosses in the leftmost and rightmost convex embossed rows is indicated by a symbol P). In other words, this is because the unit convex emboss 20 in the leftmost row in the width direction and the convex emboss row 20L in the rightmost column in the pair of unit convex embosses located closest to each other in the rotation direction touches the paper surface first. The unit convex emboss 20 (the rightmost unit convex embossing in the drawing) and the unit convex embossing 20 U (the rightmost unit convex embossing in the rightmost row) that starts to touch the paper later. ) Of the unit convex emboss 20 (in the drawing, the leftmost unit convex emboss) in the direction in which the position with the front side 20E in the rotational direction coincides in the rotational direction or starts to touch the paper surface first. From the rear side end 20U, the rotation direction front side 20E of the unit convex emboss 20 (the rightmost unit convex emboss in the figure) that starts to come into contact with the paper later is arranged so as to be positioned forward in the rotation direction. Being there It is.

  By setting it as such a convex embossing pattern, shakiness on the left and right is further prevented, the convex embossing roll 5 is prevented from shaking in the width direction, and one-sided contact and bounce are prevented. In the illustrated example, the unit convex emboss 20 that comes into contact with the paper first is the leftmost unit convex emboss, but the present invention is not necessarily limited to the pattern preceded by the leftmost unit convex emboss. . A pattern preceded by unit convex embosses in the rightmost row, for example, a pattern in which the patterns shown in FIGS. Furthermore, a pattern in which the rightmost column and the leftmost column are in contact with each other at the same time may be used. However, the effect of preventing rattling is higher when any one precedes.

  Furthermore, the convex embossing pattern according to the present embodiment is a pattern in which unit pattern embossing 20 by each convex embossing row 20L is repeatedly displayed as a set pattern 20G that is arranged with an angle of 40 to 50 ° with respect to the width direction. It is desirable that In the example shown in FIG. 5, since the convex embossed rows are three rows, the assembled pattern 20G is a triple assembled pattern. In addition, the angle between the width direction is shown with the code | symbol A in the figure. With this pattern, when the convex embossing roll 5 and the paper surface come into contact with each other, the overlapped toilet paper bases 71 and 71 are not easily displaced in the width direction, and the wrinkles easily escape, and a solid edge embossing is easily imparted. Become.

  Here, the embossing height 20H of the unit convex embossing 20 according to the present embodiment is desirably 0.4 to 0.7 mm from the reference surface of the convex embossing roll 5. Within this range, edge embossing that is firm enough to prevent ply peeling can be applied, and holes are formed in the toilet paper base 71, 71 at the time of application, or edge embossing becomes excessively conspicuous. There is nothing. In addition, when it is set as the unit convex emboss 20 of the height of 0.4-0.7 mm, if it is common toilet paper, the unit concave emboss of the depth of 0.1-0.7 mm will be formed. .

  Here, the unit convex emboss 20 according to the present embodiment has a mountain shape that spreads from the top surface 20x toward the reference surface G of the convex embossing roll 5 as shown in FIG. The slope from 20x to the reference plane G of the convex embossing roll 5 is the first inclined surface 20A from the space between the top surface and the reference plane to a predetermined height position, and the first height from the predetermined height to the reference plane G. It is desirable to have a second inclined surface 20B that is looser than the inclined surface 20A. In that case, in particular, the inclination angle ∠a of the first inclined surface 20A is 55 to 65 °, and the second inclined surface 20B is inclined. It is desirable that the angle ∠b is 65 to 45 °. By forming the inclined surfaces at two-step angles as described above, even if the top surface area of the unit convex emboss 20 is reduced, an accident in which the unit convex emboss 20 is lost does not easily occur, and wear prevention is improved. Further, even if the convex embossing roll 5 is worn by use, the wear speed is reduced when the convex embossing roll 5 is advanced to the position related to the second inclined surface 20B, so that the durability is improved. Further, as wear progresses to the second inclined surface 20B, the top surface area increases, so that the shape of the transferred concave emboss increases, and it is a secondary that can visually determine the replacement time of the convex embossing roll 5 appropriately. There is also an effect. The height position that changes from the first inclined surface 20A to the second inclined surface 20B is preferably 0.08 to 0.25 mm from the reference plane G of the convex embossing roll 5. This height is particularly excellent in chipping prevention.

  On the other hand, as shown in FIG. 7, the unit convex emboss 20 is arranged from the top surface 20 x to the convex emboss roll reference as having the same effect as the unit convex emboss 20 having the two-step inclined surface. It may be configured to have a mountain shape that spreads toward the surface G, and the skirt portion 20C is rounded. In this case, the chamfering is desirably R = 0.2 to 0.3 mm.

  It should be noted that the embossing pressure in the edge embossing means may be adjusted as appropriate in consideration of the base weight of the base paper and the paper thickness.

  After providing the edge embossing by the combination of the convex embossing roll 5 having the convex embossing pattern and the receiving roll 6 as described above, the toilet paper base paper 73 provided with the edge embossing and laminated and integrated is appropriately perforated. Is formed, and then taken up by a winder to obtain a log 70. And if the log 70 is manufactured, in the toilet roll manufacturing method according to this embodiment, the log 70 is moved to the subsequent log cutter facility X4 while stocking a plurality of logs by the known log accumulator X3. And after that, as shown to (C) in FIG. 1, the log 70 is cut | judged to a product width with the known log cutter 91, and it is set as each toilet roll 10,10 ....

  As shown in FIG. 8, the toilet roll 10 according to the manufacturing method of the present embodiment has edge embossing in which strip-shaped toilet paper base papers 11, 11 having a plurality of product widths are applied along the continuous direction at the edges. A multi-ply toilet paper 1 laminated and integrated by 2 is wound around a paper tube 3 in a roll shape.

The positions where the edge embosses 2 are arranged are preferably at both edges of the toilet paper 1 as described above, more specifically at the edges within a range of 50 mm from both edges, but are not necessarily limited to this position. Not. Moreover, you may distribute | arrange only to the one side edge part. The number of plies is preferably 2 to 3 plies, and more preferably 2 plies. The toilet paper 1 preferably has a thickness of 100 to 350 μm, and the ply per ply is preferably 11.0 to 25.0 g / m ² . When the number is within the range of the number of plies, the paper thickness, and the rice tsubo, softness and water absorption during use can be secured, and in particular, the effect of the convex emboss pattern having the configuration according to the present invention becomes more remarkable.

  Here, the term “tsubo” refers to the method for measuring the basis weight of JIS P 8124 (1998), and the paper thickness refers to the same conditions after the humidity is sufficiently adjusted under the conditions of JIS P 8111 (1998). The average value measured 5 times using the dial thickness gauge (thickness measuring device) "PEACOCK G type" (made by Ozaki Seisakusho) below.

  The size or the like of the toilet roll 10 is not limited, but generally, the width L2 is 100 to 120 mm, the diameter L3 is 100 to 120 mm, the winding length (the total length of the toilet paper) is 18 to 70 m, and the paper tube inner diameter L4. Is 35 to 50 mm, and the toilet roll 10 according to the present invention can be in this range. In addition, in this size and winding length, the phenomenon that the edge embossing portion swells in a rib shape is suitably prevented.

On the other hand, the edge embossing 2 applied to the toilet paper 1 according to the present embodiment is obtained by transferring the convex embossing pattern in the convex embossing roll 5, that is, the unit concave embossing 25 corresponding to the unit convex embossing 20 is provided. It is a formed edge embossing pattern. That is, as for the pattern of edge embossing, 2-5 rows of concave embossed rows 25L, in which unit concave embossed 25 are arranged at regular intervals in the continuous direction of the toilet paper 1, are arranged in the width direction orthogonal to the continuous direction. The unit concave emboss 25 has a side of 0.3 to 0.7 mm parallel to the width direction orthogonal to the continuous direction on the winding start side of the toilet roll. The unit concave emboss 25 has a bottom surface area of 0.035 to 0.49 mm ² and a bottom surface area ratio of 2 to 6%. Note that the bottom surface of the unit concave emboss is a portion formed by pressing the top surface of the convex emboss. Further, a pair of unit concave embosses in the continuous direction in the unit concave emboss 25 in the leftmost row and the rightmost concave emboss row 25 in the width direction are arranged so that the edges or ends thereof overlap in the continuous direction. ing. The pattern of the edge embossing 2 and the effect thereof are as described in the explanation of the convex embossing pattern 5.

Next, with respect to the convex embossing patterns of the examples, comparative examples and conventional examples of the present invention, tests were conducted on the wearability of the convex embossing roll, the visual design (whether it is conspicuous), and the prevention of ply peeling. Toilet paper base paper is one in which two sheets of toilet paper base paper having a basis weight of 16.5 g / m ² are stacked in each of the examples, comparative examples, and conventional examples, and is assumed to be manufactured in a two-ply structure. did. The thickness is 210 μm (2 plies).

  The outline and results of the convex emboss pattern according to each example are as shown in Table 1 below.

In addition, Example 1 and Example 2 are the patterns shown in FIG. 4, and unit convex embossing whose top surface shape is a regular square and whose top surface area is 0.38 mm ² is arranged at a predetermined pitch in the rotation direction. The projected embossed rows were arranged at equal intervals in the three-row width direction. The construction width L1 of Example 1 and Example 2 is 5.4 mm, and the pitch L5 is 5 mm.

In addition, the convex embossing pattern which concerns on the comparative example 1 is as showing in FIG. 10, the top surface shape is an elongate parallelogram, and the unit convex embossing 120A whose top surface area is 2.5 mm < ² > continues in a rotation direction. Pattern. The overlapping portion that is a calculation criterion for the “ratio of the overlapping width in the rotation direction” in Comparative Example 1 is P ′ in FIG. 10 and is 0.5 mm. Moreover, the construction width L1a in the comparative example 1 is 5 mm, and the pitch L5a is 5 mm.

The convex embossing pattern according to Comparative Example 2 is as shown in FIG. 11, and the convex shape in which the unit convex embossing 120 </ ^b > B having a square top surface area and a top surface area of 0.25 mm ² is arranged at a predetermined pitch in the rotation direction. A pattern in which embossed rows are arranged in the width direction of three rows was used. However, unlike the embodiment, the unit convex emboss 120B does not have a partially overlapping arrangement in the rotation direction. In addition, the construction width L1b in the comparative example 2 is 3.2 mm, and the pitch L5b is 5 mm.

The convex embossed pattern according to Comparative Example 3 is as shown in FIG. 12, and the unit convex embossed 120C having a top surface shape of a perfect circle and a top surface area of 0.03 mm ² is arranged at a predetermined pitch in the rotation direction. The convex embossed rows were arranged in a 5 row width direction. In addition, the construction width L1c in the comparative example 3 is 3.2 mm, and the pitch L5c is 4 mm.

The convex embossing pattern according to Conventional Example 1 is as shown in FIG. 13, and the convex shape is such that unit convex embossing 120D having a square top surface area and a top surface area of 1.21 mm ² is arranged at a predetermined pitch in the rotation direction. A pattern in which embossed rows are arranged in two rows in the width direction was used. In addition, the construction width L1d in Conventional Example 1 is 3.8 mm, and the pitch L5d is 5.4 mm.

  Regarding the “appearance design”, whether or not the edge embossing was noticeable was visually confirmed, and in particular, the inconspicuous one was evaluated as ◎, the inconspicuous one was evaluated as ○, and the conspicuous one was evaluated as ×.

  Regarding the “wearability of the convex embossing roll”, the wear of the convex embossing roll was confirmed, and less than that of the conventional example shown in the table as a reference, x that was equivalent to the conventional example, Those with less wear than the example were evaluated as ◎.

  Regarding “prevention of ply peeling”, as shown in (1) front view and (2) side view of FIG. 9, perforation of 20 mm in the width direction and 240 mm in the continuous direction so as to include the edge embossing of the toilet paper. Prepare a sample that has been cut in a range without any peeling, peel off the sample from one end in the continuous direction, leaving 33% of the cutting length, and set the separation end 25 mm to each chuck of the tensile tester. The strength of ply peeling was measured when one chuck was pulled at a speed of 100 mm / min at a length of 22% of the cutting length. If the measured value was in the range of 4.5 to 5.5 cN, then ◎ if it was over 5.5 cN, and x if it was less than 4.5 cN.

  As understood from the results of Table 1, by adopting the configuration of the present invention, the presence of edge embossing is inconspicuous, and good results are obtained regarding the abrasion resistance of the convex embossing roll and the prevention of ply peeling of toilet paper. It was shown that If it was outside the configuration of the present invention, sufficient effects could not be obtained in any of the appearance design and the wear resistance of the convex embossing roll. From this, it is shown that by using the convex embossing pattern according to the present invention, the appearance design is excellent, the wear resistance of the convex embossing roll is improved, and the ply peeling is sufficiently prevented. It was done.

  DESCRIPTION OF SYMBOLS 10 ... Toilet roll, 11 ... Toilet paper base, 1 ... Toilet paper, 2 ... Edge embossing, 3 ... Paper tube, 31A, 32A ... Original fabric roll, 31, 32 ... Paper tube base paper, 51 ... Glue roll, 44 ... Glue 52 ... Mandrel shaft, 58 ... Cutter, 30 ... Long paper tube, 71 ... Wide toilet paper base, 70 ... Log, 5 ... Convex embossing roll, 6 ... Receiving roll, 56 ... Edge embossing means, 20 ... Unit Convex emboss, 21 ... Convex emboss row, 20E ... Unit convex emboss roll, side parallel to the width direction parallel to the rotation axis direction, 20x ... Top surface of unit convex emboss, L1 ... Construction width, 20Y ... Leftmost Set of unit convex embosses close to the rotation direction of the rightmost row and the rightmost row, ∠A ... Triangle pattern and angle in the width direction of toilet paper base, G ... Convex emboss 20H: Unit convex embossed height, 20A: First inclined surface, 20B ... Second inclined surface, 20C ... Bottom part, L2: Toilet roll width, L3 ... Toilet roll diameter, L4 ... Inner diameter of paper tube, 25 ... unit concave emboss, 25L ... concave emboss row, 2 ... edge emboss (embossing), 91 ... log cutter.

Claims (4)

A method of manufacturing a toilet roll having an edge embossing step in which a plurality of strip-shaped toilet paper base sheets are stacked and embossed with a convex embossing roll in a continuous direction, and laminated and integrated into a ply structure toilet paper. Because
A convex embossing pattern of the convex embossing roll;
Convex embossed rows in which unit convex embosses are arranged at regular intervals in the rotational direction are arranged in 2 to 5 rows in the width direction parallel to the rotational axis direction, and the unit convex embosses in the width direction parallel to the rotational axis direction. It has parallel sides of 0.3 to 0.7 mm on the front side in the rotational direction, the top surface area is 0.035 to 0.49 mm ² , and the top surface area ratio of the unit convex emboss is 2 to 6%. And, the unit convex embossing in the leftmost column in the width direction and the convex embossing column in the rightmost column, a pair of unit convex embosses closest in the rotation direction are arranged so as to partially overlap in the rotation direction,
A method for producing a toilet roll, characterized by having a convex embossed pattern.   The unit convex emboss is a mountain shape that spreads from the top to the reference surface of the convex embossing roll, and the slope from the top surface to the reference surface of the convex embossing roll is predetermined between the top surface and the reference surface. The manufacturing method of the toilet roll of Claim 1 which has a 1st inclined surface to a height position, and a 2nd inclined surface looser than the said 1st inclined surface from the predetermined height position to a reference plane. .   The method for producing a toilet roll according to claim 1 or 2, wherein the unit convex emboss has a mountain shape that spreads from the top surface toward the convex emboss roll reference surface, and the base portion is chamfered. A toilet roll in which a plurality of strip-shaped toilet paper base papers are laminated and integrated by edge embossing applied in a continuous direction and rolled into a roll shape.
The edge embossing pattern;
Concave embossed rows in which unit concave embosses are arranged at regular intervals in the continuous direction of the toilet paper are arranged in 2 to 5 rows in the width direction orthogonal to the continuous direction, and the unit concave embosses are parallel to the width direction. It has a side of 0.3 to 0.7 mm on the winding start side of the toilet roll, the bottom area is 0.035 to 0.49 mm ² , the bottom area ratio is 2 to 6%, and the width direction The unit concave embossing in the leftmost row and the rightmost concave embossing row is arranged so that a pair of unit concave embosses closest in the continuous direction partially overlap in the continuous direction.
A toilet roll characterized by an edge embossed pattern.

Images