JP4392438B2 - Thin paper waste sheet storage products - Google Patents

Description

The present invention relates to a thin paper waste sheet storage product in which a thin paper wiper (cloth) sheet is stored in a storage body such as a paper carton.

A paper wiper (waste) made of a sheet that is not fuzzy and has a low dusting property when cleaning test tubes and laboratory equipment, absorbing liquid, and wiping electronic components in research and inspection facilities. in use.
Such a sheet is folded in a so-called zigzag shape of V-folding or Z-folding, and stored in a storage body (see, for example, Patent Document 1). In addition, the part with the perforation cut is called the cut part, and the connection part without the perforation cut is the tie part.
JP 2006-143254 A

The sheet pulled out by hand and the subsequent sheet are connected by the tie portion of the perforation, but if the length of this tie portion is short, the subsequent sheet will fall in the container without being pulled out. there were.
On the other hand, if the length of the tie portion of the perforation is long, there is a problem that the subsequent sheet is pulled out while being connected without being separated at the tie portion together with the sheet pulled out by hand. Further, even when the paper is stretched, there is a problem that the paper is pulled out without being disconnected at the tie portion.
Therefore, the main problem of the present invention is that when the preceding sheet is pulled out, the subsequent sheet does not fall in the storage body, and the subsequent sheet is reliably pulled out without being connected at the tie portion. It is an object to provide a waste paper-made waste sheet storage product that is cut into pieces .

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
According to the first aspect of the present invention, the sheet is stored in the storage body in a state where the sheets are folded and laminated in a zigzag shape , and the film is attached to the opening formed on the upper surface of the storage body, and the film is formed. It is a storage product of a thin paper waste sheet configured so that it can be taken out from the slit ,
The thin paper waste sheet has a NBKP content of 70 to 100% (the remaining 0 to 30% is LBKP) in the pulp composition, and has a ply of 20 to 40 g / m ² , or 1 ply or 2 plies or more,
A perforation is applied in the sheet width direction, and the length of the tie portion of the perforation is 0.2 to 0.3 mm.
The ratio of the total tie length to the sheet width is 0.6 to 1.0%,
The elongation (%) in the longitudinal direction of the sheet is 40 to 50%.
This is a thin paper waste sheet storage product .

<Invention of Claim 2>
In the invention according to claim 2, the sheet contains 0.1 to 1.0% (based on the total weight) of a cationic surfactant, and 0 to 0.3% (based on the total weight) of the cationic softening agent. 2. The thin paper waste sheet storage product according to claim 1, wherein the product is contained .

(Function and effect)
The length of the tie portion of the perforation is 0.2 to 0.3 mm, the ratio of the total tie length to the sheet width is 0.6 to 1.0%, and the elongation in the longitudinal direction of the sheet (% ) Is 40 to 50%, when the preceding sheet is pulled out, the subsequent sheet falls in the storage body, and the subsequent sheet is pulled out while being connected at the tie portion. Can be prevented.
In particular, when the elongation percentage (%) in the longitudinal direction of the sheet is 40 to 50%, the perforation forming means does not separate the perforated tie portion and the subsequent sheet remains connected at the tie portion. It can be prevented from being pulled out.
Further, the sheet contains 0.1 to 1.0% (based on the total weight) of the cationic surfactant, and 0 to 0.3% (based on the total weight) of the cationic softening agent. So-called lint such as powder and dust can be reduced and the tensile strength of the paper can be improved.

  According to the present invention, when the preceding sheet is pulled out, the succeeding sheet is surely separated without dropping in the storage body and without being pulled out while being connected with the tie portion. And the like.

Embodiments of the present invention will be described below.
As shown in FIG. 1, FIG. 2 and FIG. 3, each sheet waste sheet 1 such as a pop-up wiper according to the present invention is connected by a tie portion 1a of a perforation. The sheets are folded in a zigzag manner by alternately folding the sheets at the applied portions and stored in a storage body 3 such as a carton. An outlet for the thin paper waste sheet 1 is formed on the upper surface of the housing 3, and a film 2 made of a polyethylene sheet or the like is adhered to the inner surface. A slit 2A is formed in the film 2, and a thin paper waste sheet 1 stacked and stored is pulled out from the slit 2A. The thin paper waste sheet in the present invention can be a sheet of 1 ply or 2 plies or more.

The thin paper waste sheet 1 according to the present invention is laminated in a zigzag shape, and has a predetermined interval in the longitudinal direction (line flow direction, MD direction) in the width direction (transverse direction with respect to the line flow direction, CD direction). ) Are perforated, and the perforation is cut and divided.

As shown in FIG. 3, the thin paper waste sheet 1 is formed with perforations by the perfold perforation forming means 9. The perforation forming means 9 includes a pair of folding rolls 10 and 10 in which a plurality of anvils 12 and jaw pieces 13 are alternately formed on the outer peripheral surface, and suction holes 12a and 13a are formed in the anvil 12 and the jaw pieces 13. And blades 11, 11 for forming perforated cut portions 1 b on the thin paper waste sheet 1 attached to the folding rolls 10, 10 by suction force. .. Are formed in the folding roll 10, and suction holes 12a, 13a are connected to the suction hollow portions 14, 14,..., And the suction hollow portions 14, 14,. Is attached to the outer peripheral surface of the folding rolls 10 and 10 by being sucked by a suction machine (not shown) connected to.

In order to leave the perforated tie portion 1a at the tip of the blade 11, although not shown, grooves are formed at a predetermined interval by the length of the tie portion 1a. Blade 11 is disposed so as to face the top of the anvil 12, thereby forming a cut portion 1b and Thai portion 1a with respect to tissue paper made cloth sheet 1 located on top of the anvil 12.

The jaw piece 13 of the folding roll 10 is a groove having a V-shaped cross section, and is configured to grip the thin paper waste sheet 1.

The folding bar 15 can be close to the outer peripheral surface of the folding roll 10 that rotates about the axis. When the jaw piece 13 approaches the folding bar 15 while swinging up and down around the bar fulcrum and avoiding the anvil 12. The suction of the thin paper waste sheet 1 is eliminated, and the thin paper waste sheet 1 separated from the jaw piece 13 is guided to be folded. The thin paper waste sheet 1 is folded by the left and right folding bars 15, 15 being alternately guided by the respective folding rolls 10, 10 to guide the thin paper waste sheet 1 separated from the jaw piece 13.

The raw material of the thin paper waste sheet 1 according to the present invention contains 70 to 100% NBKP as pulp (the remaining 0 to 30% is LBKP) and 0.1 to 1.0% cationic surfactant (preferably 0.2 to 0.5%) (based on the total weight), 0 to 0.3% (preferably 0.1 to 0.2%) of the cationic softener (based on the total weight), Freeness before beating (Canadian standard freeness (CSF) based on JIS-P8121) is set to 630-740 cc, and 0.3-2.0% down (preferably 0.5-1.0% down) after beating Is preferred. By the above blending, so-called lint such as paper powder and dust can be reduced and the tensile strength of the paper can be improved. The basis weight of the thin paper waste sheet is not limited, but 20-40 g / m ² (preferably 20-30 g / m ² ) is desirable. The basis weight is measured in accordance with JIS P 8124.

The reason why the cationic surfactant is contained in an amount of 0.1 to 1.0% (relative to the total weight) is to add it for the purpose of improving the strength when the thin paper waste sheet is wet. If the surfactant is less than 0.1% (based on the total weight), the thin paper waste sheet will be torn when wiping off the moisture, and if it exceeds 1.0%, the wet strength This is because there is no improvement in the effect.

  The reason why the cationic softening agent is contained in an amount of 0 to 0.3% (based on the total weight) is that when the cationic softening agent is 0%, there is no softness and no suppleness when wiping off. If it exceeds 3%, there is no strength and there is concern about the occurrence of lint.

As described above, the perforation is composed of the cut portion 1b that is the perforated portion and the tie portion 1a that is the connecting portion that is not perforated, and this cut portion 1b and the tie portion 1a. elongation of the relationship as well as tissue paper made cloth sheet 1, upon withdrawal of the former sheet is pulled out while the subsequent sheets or worse depressed in the housing body 3, and the subsequent sheet are connected by tie portion 1a The present inventor has found that it is important to prevent the occurrence of the problem.

Specifically, the length (mm) of the perforated tie portion 1a is 0.2 to 0.3 mm, and the ratio (%) of the total tie length to the sheet width of the thin paper waste sheet is 0.6 to 1.mm. The elongation percentage (%) in the longitudinal direction of the thin paper waste sheet is 40 to 50%.

  The length (mm) of the perforated tie portion 1a is preferably 0.2 to 0.3 mm if the length (mm) of the perforated tie portion 1a is less than 0.2 mm. This is because 1a does not remain and the sheet falls when taken out, and if it exceeds 0.3 mm, the tie portion 1a remains and the sheet is connected when taken out. The cut / tie ratio (the ratio of the length of the cut portion to the tie portion) is preferably 200: 1 to 100: 1. When the ratio exceeds 200: 1, the perforation strength is weakened, so that there is a possibility that the sheet is liable to drop when taken out. When the ratio is less than 100: 1, the perforation strength is increased, so that there is a possibility that the sheets are connected and come out at the time of taking out.

  The ratio (%) of the total tie length to the sheet width is preferably 0.6 to 1.0% if the ratio (%) of the total tie length to the sheet width is less than 0.6%. This is because 1a does not remain and there is a drop of the sheet at the time of taking out, and if it exceeds 1.0%, the tie portion 1a remains and the sheet is connected at the time of taking out.

40-50% as a longitudinal elongation of the sheet (%) that is suitable, if the longitudinal elongation of the sheet (%) is less than 40%, thin paper made cloth sheet 1 by perforation forming means This is because the tie portion 1a is cut off when the thin paper waste sheet 1 is gripped by the jaw piece 13 after the perforation is formed in the sheet and when suction is performed at the suction holes 12a and 13a of the folding roll 10. This is because the subsequent sheet falls in the storage body 3 without being pulled out. On the other hand, or if more than 50%, perforations are formed, in deriving a thin paper made waste sheet from the storage body 3, got drawn while subsequent tissue paper made rag sheet are connected by tie portion 1a In addition, since the strength at the time of pulling out becomes strong, there is a concern that so-called lint such as paper dust or dust may be generated.

<Example 1>
Pull out the thin paper waste sheet 1 from the storage body 3 and (1) whether or not the subsequent sheet falls in the storage body, or (2) whether or not the subsequent sheet is pulled out while being connected by the tie portion 1a. Confirmation was performed on 7 samples. The dimensions of the sheet separated by the perforations are all 125 (width) mm × 195 (length) mm.
Storage body (carton): Dimensions 130 (width) mm x 120 (depth) mm x 91 (height) mm, length of slit width of outlet (L) 70 mm
The sample materials are shown in Table 1.
The lint measurement method uses a light scattering type automatic particle counter Model: KC-20A (Lion Co., Ltd.), and pulls out sheets one by one from the storage body 3 and pulls out 20 sheets in 30 seconds. The total number of lint particles having a particle size of 10 to 100 μm is measured.

For sample 3, since the elongation percentage in the longitudinal direction of the thin paper waste sheet 1 was 20%, the perforation forming means formed the perforations on the thin paper waste sheet , and then the jaw piece 13 grips the thin paper waste sheet 1 At the time of suction at the suction holes 12a and 13a of the folding roll 10, the tie portion 1a has been cut off. For this reason, it could not be used with the continuous extraction method.

<Example 2>
The relationship between the drawer of the thin paper waste sheet 1 and the length L of the slit width of the container 3 was compared (see FIG. 1).
Sheet used is NBKP 100%, cationic surfactant 0.32% (based on total weight), cationic softener 0.06% (based on total weight), freeness down 0.7%, basis weight The sheet size in a state of 23.5 g / m ² and separated by a perforation is 125 (width) mm × 195 (length) mm.

As a result of comparison, it has been found that the withdrawal of the thin paper waste sheet 1 is not affected by the length L of the slit width, or is slightly affected by the influence.

It is a perspective view which shows the state in which the thin paper waste sheet based on this invention was accommodated in the accommodating body. It is a schematic diagram for demonstrating the cut part and tie part of a thin paper waste sheet . It is a schematic diagram for demonstrating perfold perforation formation means.

DESCRIPTION OF SYMBOLS 1 ... Thin paper waste sheet , 1a ... Tie part, 1b ... Cut part, 2 ... Film, 2A ... Slit, 3 ... Storage body, 9 ... Perforation forming means, 10 ... Folding roll, 11 ... Blade, 12 ... Anvil, 12a ... suction hole, 13 ... jaw piece, 13a ... suction hole, 14 ... hollow part for suction, 15 ... folding bar, L ... length of slit width.

Claims (2)

The sheet is stored in the storage body in a zigzag folded and laminated state, and a film is attached to an opening formed on the upper surface of the storage body, and can be taken out from a slit formed in the film. It is a storage product of thin paper waste sheets configured as follows:
The thin paper waste sheet has a NBKP content of 70 to 100% (the remaining 0 to 30% is LBKP) in the pulp composition, and has a ply of 20 to 40 g / m ² , or 1 ply or 2 plies or more,
A perforation is applied in the sheet width direction, and the length of the tie portion of the perforation is 0.2 to 0.3 mm.
The ratio of the total tie length to the sheet width is 0.6 to 1.0%,
The elongation (%) in the longitudinal direction of the sheet is 40 to 50%.
A thin paper waste sheet storage product . The sheet contains 0.1 to 1.0% (based on the total weight) of a cationic surfactant, and 0 to 0.3% (based on the total weight) of a cationic softening agent. The thin paper waste sheet storage product according to claim 1.

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