JP2022116697A - Hand towel in film-less storage box - Google Patents

Abstract

To provide a hand towel in film-less storage box, capable of facilitating removal without breaking a hand towel, making it difficult to cause drop-back when removing and achieving high absorption of the hand towel.SOLUTION: A hand towel in film-less storage box 1 is configured as follows: The take-out direction of a hand towel 10 is a CD direction of the hand towel 10. The basis weight of the hand towel 10 is 14.9-17.9 g/m2. The paper thickness of the hand towel 10 is 0.55-0.71 mm/10 ply and the dry transverse strength of the hand towel 10 is 2.9-6.7 N/25 mm. A proportion (W/x×100) of a length (a) in the lengthwise direction of a take-out port 21 to a length (x) in the lengthwise direction of a storage box 20 is 61.7-92.5%. A proportion (W/x×100) of a sheet length (W) in the lateral direction of the hand towel 10 to the length (x) in the lengthwise direction of the storage box 20 is 88.1-98.1%.SELECTED DRAWING: Figure 1

Description

The present invention relates to a filmless storage box containing a hand towel.

Paper hand towels are used in various forms such as a pop-up type inserted in a storage box. Such paper hand towels are used for wiping off moisture from wet objects, so they need to have a higher water absorption capacity than tissue paper. Therefore, it is designed to have a high basis weight.

However, paper with a high basis weight is not preferred because it is generally stiff and has a poor feel when it comes into contact with the skin during wiping. Therefore, attempts have been made to adjust the paper quality by, for example, reducing the basis weight of one sheet of hand towel base paper in order to reduce the feeling of stiffness and using two plies in order to increase water absorbency.

In recent years, a technology for high-speed processing of hand towels using a multi-stand interfolder has also been developed.

Some storage boxes in which a stack of hand towels is filled have a film attached around the outlet for the purpose of preventing foreign matter such as dust from entering the hand towels to be filled. . However, due to the recent trend of reducing the environmental burden, it is preferred to use a storage box with a filmless outlet (filmless storage box).

For example, Patent Literature 1 discloses a film package in which an item to be packaged is sanitary paper folded in a pop-up manner, and a paper hand towel or the like can be used as the sanitary paper.

JP 2016-188092 A

However, in the commonly used interfolder processed product, the hand towel is taken out in the MD (Machine Direction) direction, whereas in this multi-stand type interfolder processed product, the hand towel is taken out in the CD direction. (Cross Direction) direction. Therefore, when a 2-ply hand towel is processed with a multi-stand interfolder and the take-out direction is in the CD direction, the basis weight of one sheet of paper is low and the lateral strength (strength in the CD direction) of one sheet of paper is weak. There is a problem that the hand towel is easily torn when taken out compared to the interfolder processed product in which the hand towel is taken out in the MD direction.

Then, a product in which a storage box with a filmless outlet (a filmless storage box containing hand towels) is filled with a hand towel laminate obtained by processing two-ply hand towels with a multi-stand interfolder as described above. Also, if the size of the take-out opening is increased in order to reduce the easiness of tearing when taken out, there is also a problem that drop back tends to occur due to the weight of the hand towel when taken out.

In addition, if a hand towel with a low basis weight is used to prevent the phenomenon that the hand towel is torn or drop back when taken out, there will be a problem that the water absorbency during use cannot be satisfied.

In this way, the two-ply hand towels are processed with a multi-stand type interfolder, and the filmless storage box containing the hand towels is taken out in the CD direction. It is the actual situation that it is difficult to achieve both of this and the fact that the hand towel has high water absorbency at a practical level.

The present invention has been made in view of such circumstances, and a film containing a hand towel in which the hand towel is easy to take out without being torn, is less likely to drop back when taken out, and has high water absorption of the hand towel. To provide a less storage box.

In order to achieve the above-mentioned object, the present inventors have found that, in the case of a product in which a stack of two-ply hand towels processed by a multi-stand interfolder is filled in a storage box with a filmless outlet, We investigated in detail why the above problem occurred. As a result, I thought that the following may be one of the causes.

When hand towels are processed by a multi-stand interfolder, the take-out direction when taking out the hand towels from the storage box is the CD direction of the hand towels. A certain direction (corresponding to the CD direction of a hand towel) is weak. As a result, when the hand towel is taken out from the storage box, the next hand towel whose face should be exposed from the take-out opening cannot stand firmly in the take-out direction, making it difficult to take out. Furthermore, it was thought that the weight of the hand towel would cause it to fall into the filmless take-out opening, resulting in a dropback.

As a result of repeated improvements based on this idea, the present inventor has found that a hand towel laminate in which two plies of paper hand towels are folded so as to overlap each other is stored in a storage box with a filmless outlet. , A filmless storage box containing a hand towel, the hand towel take-out direction is the CD (Cross Direction) direction of the hand towel, and the basis weight of the hand towel is 14.9 g / m ² or more and 17.9 g / m ² The paper thickness of the hand towel is 0.55 mm/10 ply or more and 0.71 mm/10 ply or less, and the dry lateral strength of the hand towel is 2.9 N/25 mm or more and 6.7 N/25 mm or less. , the ratio of the longitudinal length (a) of the outlet to the longitudinal length (x) of the storage box (a/x × 100) is 61.7% or more and 92.5% or less, and A hand towel having a ratio (W/x×100) of the sheet length (W) in the horizontal direction to the length (x) of the box in the longitudinal direction of 88.1% or more and 98.1% or less. The present invention has been completed based on the finding of a film-less storage box.

That is, the present invention is as follows.

[1]
A filmless storage box containing hand towels, wherein a hand towel laminate in which two paper hand towels are folded so as to overlap each other is stored in a storage box having a filmless take-out opening, wherein the hand towel is stored in the storage box. The take-out direction is the CD (Cross Direction) direction of the hand towel, the basis weight of the hand towel is 14.9 g/m ² or more and 17.9 g/m ² or less, and the paper thickness of the hand towel is 0.55 mm/10 ply or more and 0.71 mm/10 ply or less, the dry lateral strength of the hand towel is 2.9 N/25 mm or more and 6.7 N/25 mm or less, and the length of the storage box in the longitudinal direction A ratio (a/x×100) of the longitudinal length (a) of the outlet to (x) is 61.7% or more and 92.5% or less, and the longitudinal length of the container is 61.7% or more and 92.5% or less. A filmless storage box containing a hand towel, wherein the ratio (W/x x 100) of the sheet length (W) in the horizontal direction of the hand towel to (x) is 88.1% or more and 98.1% or less. be.
[2]
A ratio (b/y×100) of the length (b) of the outlet in the width direction to the length (y) of the storage box in the width direction is 22.7% or more and 56.4% or less. A filmless storage box containing a hand towel according to [1].
[3]
[1] or [2], wherein the sheet length (L) in the vertical direction when one set of hand towels is unfolded and the length (y) in the lateral direction of the storage box satisfy the following relational expression: It is a filmless storage box containing a hand towel described in .
81.8%≦(L/2)/y×100≦96.1%
[4]
The hand towel-filled filmless according to any one of [1] to [3], wherein the dry longitudinal tensile strength (DMDT) of the hand towel is 12.7 N/25 mm or more and 17.3 N/25 mm or less. It is a storage box.
[5]
Using the tissue softness measuring device TSA, the 2-ply sample of the hand towel placed on the sample stage was pressed from above with a rotor with blades at a pressing pressure of 100 mN, and then rotated at a speed of 2.0 (/sec). When rotating and measuring the vibration of the sample table with a vibration sensor, the intensity of the maximum peak of the first spectrum from the low frequency side, automatically acquired by the software on the tissue softness measuring device TSA (TS750) is 19.1 dBV ² rms or more and 27.3 dBV ² rms or less.
[6]
The filmless storage box containing a hand towel according to any one of [1] to [5], wherein the storage box has a height of 30 mm or more and 65 mm or less.
[7]
[1] to [6], wherein the length (x) in the longitudinal direction of the storage box is 200 mm or more and 260 mm or less, and the length (y) in the width direction of the storage box is 95 mm or more and 125 mm or less; A filmless storage box containing a hand towel according to any one of
[8]
The hand towel container according to any one of [1] to [7], wherein the resistance to take out the hand towel from the storage box is 0.3 N or more and 1.4 N or less from the 3rd set to the 30th set from the bottom. It is a filmless storage box.
[9]
The hand towel container according to any one of [1] to [8], wherein the resistance to take out the hand towel from the storage box is 0.9 N or more and 2.7 N or less from the 3rd set to the 15th set from the top. It is a filmless storage box.

According to the present invention, it is possible to provide a filmless storage box containing hand towels, in which the hand towels are easily taken out without being torn, drop-back hardly occurs when the hand towels are taken out, and the hand towels are highly absorbent.

FIG. 1 is a perspective view of a filmless storage box containing hand towels according to a first embodiment. FIG. 2 is a plan view of the unfolded hand towel of the present embodiment. FIG. 3 is a top view of the filmless storage box containing hand towels according to the first embodiment. FIG. 4 is a top view of a filmless storage box containing hand towels according to a second embodiment. FIG. 5 is a top view of a filmless storage box containing hand towels according to a third embodiment. FIG. 6 is a top view of a filmless storage box containing hand towels according to a fourth embodiment. FIG. 7 is a conceptual diagram for explaining a method of measuring extraction resistance. FIG. 8 is a perspective view of a conventional filmless storage box containing a hand towel manufactured by interfolder processing.

EMBODIMENT OF THE INVENTION Hereinafter, the form (only henceforth "this embodiment") for implementing this invention is demonstrated in detail. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to the following contents. The present invention can be appropriately modified and implemented within the scope of the gist thereof.

In the drawings, the same elements are denoted by the same reference numerals, and overlapping descriptions are omitted. In addition, unless otherwise specified, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to the illustrated ratios.

Furthermore, in the present specification, the term "abbreviated" indicates the meaning of the term excluding the "abbreviation" within the scope of the technical common sense of a person skilled in the art, and the meaning itself excluding the "abbreviation" shall also include

FIG. 1 is a perspective view of a filmless storage box containing hand towels according to the first embodiment, FIG. 2 is a plan view of the unfolded state of the hand towels of the present embodiment, and FIG. 3 is the first embodiment. It is a top view of a filmless storage box containing a hand towel according to a form.

The filmless storage box 1 containing hand towels according to the first embodiment is a storage box 20 in which a hand towel laminate in which two paper hand towels 10 are folded so as to overlap each other has a filmless outlet 21. A filmless storage box 1 containing a hand towel stored in a (filmless storage box), the take-out direction (arrow F) of the hand towel 10 is the CD direction of the hand towel 10, and the basis weight of the hand towel 10 is , 14.9 g/m ² or more and 17.9 g/m ² or less, the paper thickness of the hand towel 10 is 0.55 mm/10 ply or more and 0.71 mm/10 ply or less, and the dry lateral strength of the hand towel 10 is 2.9 N/25 mm or more and 6.7 N/25 mm or less, and the ratio (a/x× 100) is 61.7% or more and 92.5% or less, and the ratio (W/x ×100) is 88.1% or more and 98.1% or less.

The filmless storage box 1 containing hand towels is a storage box 20 filled with a filmless hand towel laminate so that the take-out direction (arrow F) of the hand towels 10 is the CD direction of the hand towels 10. is. The storage box 20 is filled with the hand towel laminate in such a positional relationship because, for example, the paper hand towels 10 are folded by multi-stand interfolding so that the two plies of the hand towels 10 overlap each other. This is the case when the body is stored in the storage box 20 with the filmless outlet 21 . The CD direction is a direction perpendicular to the flow direction (MD direction; Machine Direction) when the hand towel 10 is manufactured.

Here, as an aid to understanding, the filmless storage box 1 containing hand towels according to the present embodiment (see FIG. 1) and the conventional filmless storage box 100 containing hand towels manufactured by interfolder processing (see FIG. 8) Explain the difference between

FIG. 8 is a perspective view of a conventional filmless storage box containing a hand towel manufactured by interfolder processing.

In the filmless storage box 100 containing hand towels shown in FIG. 8, since the hand towels 200 are manufactured by interfolder processing, the direction (arrow F) of taking out the hand towels 200 from the outlet 310 of the storage box 300 is the MD direction. It's becoming However, in the filmless storage box 1 containing hand towels of this embodiment, the hand towels 10 are manufactured by multi-stand interfolder processing, so the take-out direction (arrow F) of the hand towels 10 is the CD direction. They are different in that respect.

In other words, the multi-stand interfolder processing has the manufacturing advantage of being able to process at high speed, but since the take-out direction (arrow F) of the hand towel 10 is the CD direction, in the case of a two-ply hand towel, the paper 1 Since the grammage per sheet is low and the lateral strength (strength in the CD direction) tends to be weak, there is a problem that it is more likely to tear than the one-ply sheet, which has a high grammage per sheet.

Furthermore, there is room for improvement in terms of how easily the hand towel 10 can be taken out. Especially when starting to use the hand towels 10 stored in the storage box 20 (for example, the 15th set from the top of the outlet 21), the friction resistance between the hand towel 10 and the filmless outlet 21 is high. In addition, the hand towel 10 tends to be difficult to take out.

Furthermore, there is room for improvement regarding the drop back of the storage box 20 when the hand towel 10 is taken out. In particular, when trying to use up the hand towels 10 stored in the storage box 20 (for example, the 30th set from the bottom of the takeout opening 21), the distance from the takeout opening 21 to the remaining clips increases, and dropback occurs. easier.

However, according to the filmless storage box 1 containing hand towels according to the present embodiment, such a problem does not occur, and the hand towels 10 are processed by the multi-stand interfolder and filled in the storage box 20. Even if it is a product, the hand towel 10 can be easily taken out without being torn, hardly drop back when taken out, and the hand towel 10 can have high water absorption.

The hand towel 10 and storage box 20 of this embodiment will be described below.

(Hand towel)

The hand towels 10 are folded, for example, in a substantially V shape so that two sheets are overlapped to form a hand towel laminate. That is, the number of plies is 2 plies. Such a hand towel laminate is stored in a storage box 20. - 特許庁

In addition, in this embodiment, the lateral direction (see symbol W) of the hand towel 10 is the MD direction of the hand towel 10 . The longitudinal direction of the hand towel (see symbol L) is the CD direction of the hand towel 10, and is the take-out direction of the hand towel 10 (see arrow F in FIGS. 1 and 2). The longitudinal sheet length (L) of the hand towel 10 shown in FIG. 2 is the longitudinal length of the folded hand towel 10 unfolded in the hand towel laminate.

The basis weight of the hand towel 10 is 14.9 g/m ² or more and 17.9 g/m ² or less. It is preferably 16.0 g/m ² or more and 17.5 g/m ² or less. The basis weight can be measured according to JIS P 8124.

The paper thickness of the hand towel 10 is 0.55 mm/10 ply or more and 0.71 mm/10 ply or less. It is preferably 0.59 mm/10 ply or more and 0.67 mm/10 ply or less. The paper thickness is measured under the conditions of JIS P 8111 (23 ± 1 ° C, 50 ± 2% relative humidity using a thickness gauge (for example, upright dial thickness gauge "PEACOCK R1-B type" manufactured by Ozaki Seisakusho), using a probe can be measured by applying a pressure of 3.7 kPa.

By setting the basis weight and paper thickness within the above ranges, the hand towel 10 is easier to take out from the storage box 20 without being torn, and dropback is less likely to occur when taken out, and the water absorbency of the hand towel 10 is further improved. can be high.

The hand towel 10 has a dry lateral tensile strength (DCDT, dry lateral strength) of 2.9 N/25 mm or more and 6.7 N/25 mm or less. It is preferably 3.8 N/25 mm or more and 5.9 N/25 mm or less. By setting the dry lateral strength within the above range, the hand towel 10 is less likely to tear when taken out of the storage box 20, and can be effectively prevented from being dropped back when taken out.

The dry longitudinal tensile strength (DMDT, dry longitudinal strength) of the hand towel 10 is preferably 12.7 N/25 mm or more and 17.3 N/25 mm or less, more preferably 13.8 N/25 mm or more and 16.2 N. /25 mm or less. By setting the dry longitudinal strength within the above range, a moderate softness can be felt when used for hand wiping, and dropback can be effectively prevented when the product is taken out.

Dry transverse strength and dry longitudinal strength can be measured based on the tensile test method of JIS P 8113, respectively.

Using the tissue softness measuring device TSA, the 2-ply sample of the hand towel 10 placed on the sample stage was pushed from above with a pushing pressure of 100 mN with a bladed rotor, and then rotated at a speed of 2.0 (/ sec). When rotating and measuring the vibration of the sample table with a vibration sensor, the intensity (TS750) of the maximum peak of the first spectrum from the low frequency side, automatically acquired by the software on the tissue softness measuring device TSA, is It is preferably 19.1 dBV ² rms or more and 27.3 dBV ² rms or less, more preferably 21.2 dBV ² rms or more and 25.4 dBV ² rms or less. By setting the TS750 value in the above range, it is possible to control the friction between adjacent hand towels, thereby making it easier to take out the hand towel 10 from the storage box 20 without tearing it, and drop back when taking it out. can be prevented more effectively.

Here, the tissue softness measuring apparatus TSA will be explained. The tissue softness measuring device TSA analyzes vibration data detected by various sensors when a rotor with rotating blades is pressed against a paper sample (sample) and parameterizes it (TS value). It quantitatively evaluates the softness (feeling of touch) of paper, and is a trade name manufactured by Emtec Electronic GmbH in Germany (the Japanese agent is Sanyo Trading Co., Ltd.).

In addition, emtec measurement system is used as software for vibration analysis and parameterization (TS value). This software is equipped with various algorithms (for example, Base Tissue, Facial, TP, etc.), TS7, TS750, D (stiffness) are automatically acquired on the software, and these TS7, TS750, D and basis weight , thickness, number of plies, etc., the HF (hand feel) value is calculated by the type of various algorithms. Of these, TS750 is used in this embodiment, and any algorithm may be used as long as the above measurement conditions are satisfied, and the value of TS750 does not change depending on the type of algorithm.

In addition, as a preferred aspect of the present embodiment, the lower limit of the TWA (Total Water Absorbency) of the hand towel 10 is 80 g/m ² or more, and a more preferable aspect is 100 g/m ² or more. and more preferably 105 g/m ² or more. Also, the upper limit of TWA is not particularly limited in the present embodiment, but for example, it is 140 g/m ² or less. According to the filmless storage box 1 containing a hand towel of this embodiment, it is easy to take out the hand towel 10 from the storage box 20 without tearing, and it is difficult to drop back when taking out. It can be a hand towel 10 having water absorbency. As a result, for example, when wiping off moisture after washing hands, the amount of moisture absorbed per hand towel can be increased, and the number of hand towels 10 used can be reduced. In addition, TWA can be measured according to the method described in Examples described later.

The material of the hand towel 10 contains pulp as a main component, and preferably contains 50% by mass or more of pulp. Pulp includes wood pulp, waste paper pulp, non-wood pulp and the like. The hand towel 10 may consist of 100% by mass of wood pulp as pulp, or may contain waste paper pulp or non-wood pulp in addition to wood pulp. The wood pulp is preferably bleached softwood kraft pulp (NBKP) or bleached hardwood kraft pulp (LBKP). The waste paper pulp is preferably derived from paper liquid beverage containers such as milk cartons. In addition, fillers, synthetic fibers, natural fibers, etc. may be included as components other than pulp.

Specifically, it is preferably a wood pulp containing 20% by mass or more and 50% by mass or less of softwood bleached kraft pulp (NBKP) and 50% by mass or more and 80% by mass or less of hardwood bleached kraft pulp (LBKP), and 25% by mass of NBKP. % or more and 45% by mass or less and 55% by mass or more and 75% by mass or less of LBKP. It is even more preferable to have

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 it is even more preferable not to mix waste paper pulp.

In order to ensure proper strength of the hand towel 10, 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 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.

(storage box)

The storage box 20 is, for example, a substantially rectangular parallelepiped storage box made of paper, and is sometimes called a carton or the like. The storage box 20 is provided with a filmless take-out opening 21 on its top surface, through which the hand towel 10 can be taken out (pulled out). Although the storage box 20 will be described later, in the present embodiment, the size and shape of the outlet 21 and the like are not particularly limited as long as the hand towel 10 can be pulled out. The size and shape of the storage box 20 and the outlet 21 can be suitably set in consideration of the size, shape, application, etc. of the hand towel 10 as long as they are within the range that satisfies the conditions of the present embodiment. Note that the dimensions and shape of the storage box 20 described below are outer dimensions unless otherwise specified.

The ratio (a/x×100) of the longitudinal length (a) of the outlet 21 to the longitudinal length (x) of the storage box 20 is 61.7% or more and 92.5% or less. It is preferably 72.5% or more and 88.7% or less. This ratio can be used as an indicator of the opening ratio of the outlet 21 in the longitudinal direction. By setting this ratio within the above range, the hand towel 10 can be easily taken out of the storage box 20 without being torn, and drop-back is less likely to occur when taken out.

The ratio (W/x×100) of the lateral sheet length (W) of the hand towel 10 to the longitudinal length (x) of the storage box 20 is 88.1% or more and 98.1% or less. . It is preferably 91.6% or more and 97.3% or less. By setting this ratio within the above range, the hand towel 10 can be easily taken out of the storage box 20 without being torn, and drop-back is less likely to occur when taken out.

The ratio (b/y×100) of the length (b) of the outlet 21 in the widthwise direction to the length (y) of the storage box 20 in the widthwise direction is preferably 22.7% or more and 56.4%. or less, more preferably 32.6% or more and 48.1% or less. This ratio can be used as an index of the opening ratio of the outlet 21 in the lateral direction. By setting this ratio within the above range, the hand towel 10 can be more easily taken out of the storage box 20 without being torn, and the drop back is much less likely to occur when taken out. Furthermore, it is more preferable that both the aperture ratio in the longitudinal direction (see a/x×100) and the aperture ratio in the transverse direction (see b/y×100) are within the ranges described above.

The sheet length (L) in the vertical direction when one set of hand towels (that is, two plies) is unfolded, and the length (y) in the lateral direction of the storage box 20 satisfy the following relational expression (1). is preferable, and it is more preferable to satisfy the relational expression (2). This L/2 corresponds to, for example, the vertical length when the hand towel 10 is folded in half. (L/2)/y×100 corresponds to the ratio (%) of (L/2) to y.
81.8%≦(L/2)/y×100≦96.1% (1)
86.4%≦(L/2)/y×100≦93.3% (2)
By setting this ratio within the above range, the hand towel 10 can be more easily taken out of the storage box 20 without being torn, and the drop back is much less likely to occur when taken out.

The length (x) of the storage box 20 in the longitudinal direction is preferably 200 mm or more and 260 mm or less, more preferably 211 mm or more and 244 mm or less. The length (y) of the storage box 20 in the short direction is preferably 95 mm or more and 125 mm or less, more preferably 102 mm or more and 118 mm or less. In this embodiment, it is more preferable that both the length in the longitudinal direction and the length in the lateral direction of the storage box 20 satisfy the above ranges. The length in the longitudinal direction (x) corresponds to the carton size in the longitudinal direction, and the length in the lateral direction (y) corresponds to the carton size in the lateral direction. By setting the size of the storage box 20 within the above range, the opening rate of the outlet 21 in the longitudinal direction and the width direction, and the ratio of the length of the hand towel 10 to the above range, the storage box 20 is prevented from tearing the hand towel 10. It is easier to take out from the container and more difficult to drop back when taking out.

Also, the height (h) of the storage box 20 is preferably 30 mm or more and 65 mm or less, more preferably 37 mm or more and 55 mm or less. By setting the height of the storage box 20 within the above range, it is possible to further improve the ease of taking out the hand towel 10 and to more effectively prevent the drop back at the time of taking out. Note that this height (h) is sometimes called a carton height or the like.

The length (a) in the longitudinal direction of the take-out opening 21 of the storage box 20 can be set to a suitable length in consideration of the above-described dimensional and shape conditions. Considering the relative ratio with the length (x) of , it is preferably 140 mm or more and 210 mm or less.

In addition, the length (b) in the lateral direction of the take-out opening 21 of the storage box 20 can be appropriately set to a suitable length in consideration of the above-described dimensional and shape conditions. Considering the relative ratio with the length (y) in the hand direction, it is preferably 25 mm or more and 62 mm or less.

Furthermore, the size and shape of the hand towel 10 (for example, the length of the sheet in the horizontal direction and the length of the sheet in the vertical direction) are appropriately determined in consideration of the conditions of the size and shape of the storage box 20 and its outlet 21. shape. Also, the size of the hand towel 10 can be adapted according to the size, material, etc. of the storage box 20 .

From such a viewpoint, the sheet length (W) of the hand towel in the lateral direction (corresponding to the MD direction) is preferably 200 mm or more and 240 mm or less, more preferably 208 mm or more and 228 mm or less. By setting it as such a length, while taking out property becomes further favorable, when using for a hand-wiping use, it becomes a suitable size. This sheet length (W) corresponds to the sheet size in the lateral direction.

Furthermore, the sheet length (L) of the hand towel 10 in the longitudinal direction (corresponding to the CD direction) is preferably 180 mm or more and 220 mm or less, more preferably 190 mm or more and 208 mm or less. By setting it as such a length, while taking out property becomes further favorable, when using for a hand-wiping use, it becomes a suitable size. This sheet length (L) corresponds to the sheet size in the vertical direction. Also, L/2 corresponds to the sheet size when the hand towel 10 is folded with two plies.

The resistance to take out the hand towel 10 from the storage box 20 (resistance when pulling out the hand towel 10 from the storage box 20) is preferably 0.9 N or more and 2.7 N or less for the 3rd to 15th sets from the top. , 1.3 N or more and 2.1 N or less.

The resistance to take out the hand towel 10 from the storage box 20 (resistance when pulling out the hand towel 10 from the storage box 20) is preferably 0.3 N or more and 1.4 N or less from the third set to the 30th set from the bottom. , 0.5 N or more and 1.0 N or less.

Here, the take-out resistance of the 3rd to 15th sets from the top corresponds to the resistance at the beginning of use of the filmless storage box 1 containing a hand towel, and the take-out resistance of the 3rd to 30th sets from the bottom is To cope with resistance at the end of use of the filmless storage box 1 containing hand towels. If the resistance at the beginning of use is high, it becomes difficult to take out the hand towel 10, and the hand towel 10 may be torn when the hand towel 10 is taken out. Also, if the resistance at the end of use is low, dropback is likely to occur. In this respect, by controlling the resistance at the beginning of use and the resistance at the end of use as described above, the hand towel 10 can be pulled out more easily without being torn at the beginning of use, and dropback, which tends to occur after use, can be more effectively prevented. can be effectively prevented. In addition, from the top to the second set, the creases and wrinkles are different compared to the third set and later, and the ejection resistance value may fluctuate greatly. Since there is a tendency that a suitable average value is not obtained, this embodiment focuses on the extraction resistances of the third to thirtieth sets from the top. In addition, from the first set to the second set from the bottom, there is no next hand towel 10 continuing from the bottom, and the take-out resistance value may fluctuate greatly compared to the third set and after, and the end of use. Since there is a tendency that an average value suitable as an index of resistance is not obtained, in this embodiment, attention is focused on the extraction resistances of the third to thirtieth sets from the bottom.

The above-described resistance to taking out the hand towel 10 from the storage box 20 can be measured by the following measuring method.

FIG. 7 is a conceptual diagram for explaining a method of measuring extraction resistance.

First, six filmless storage boxes 1 containing hand towels containing hand towel laminates are prepared. Two pieces of paper 20a (12 mm in the MD direction and 20 mm in the CD direction) of the storage box 20 are collected from one box. For 1 of the remaining 5 boxes, gently remove and remove the first 2 hand towels 10 .

Next, the third set from the top is centered in the width direction of the sheet, and as shown in FIG. It is sandwiched between pieces of paper 20a. Clip C (for example, Otsuka Trading Co., Ltd., trade name “TANOSEE double clip, small mouth width 19 mm”) is clipped from above the paper piece 20a of the storage box 20 . The clip C has a height of 11 mm and a width of 19 mm, and the paper strip 20a of the storage box 20 has a length of 12 mm and a width of 20 mm. Note that the size of the clip C and the size of the piece of paper 20a are not limited to these.

Then, in this sandwiched state, the hand towel 10 is pulled up at a pulling speed of 1000 mm/min using a Tensilon tensile tester, and the maximum value of resistance until it is pulled out of the storage box 20 is measured. Similarly, the 4th to 15th sets and the 3rd to 30th sets from the bottom are measured in the same manner, and the average value of each is taken as the extraction resistance. The remaining 4 boxes are measured in the same manner, and the average value of the 5 boxes is used as the take-out resistance.

In addition, the uppermost sheet (the first set on the upper side) is preferably folded along the sheet width. Since the sheets are folded, the sheets are less likely to tear when pulling out the first set.

The number (number of sets) of hand towels 10 stored in the storage box 20 is preferably 60 or more and 140 or less, more preferably 80 or more and 120 or less. The number of sets can be appropriately determined in consideration of the height of the storage box 20, for example. By setting the number of sets within the above range, the hand towels 10 can be more easily taken out of the storage box 20 without tearing, and the drop-back at the time of taking out can be made more difficult.

The weight of storage box 20 is preferably 20 g or more and 55 g or less. This weight is more preferably 30 g or more and 45 g or less. The weight of the storage box 20 can be appropriately determined according to the basis weight, paper thickness, size, number of sets, etc. of the hand towels to be stored.

The shape of the outlet 21 is not particularly limited as long as it is within the range in which the effects of the present embodiment can be obtained, and a suitable shape can be selected in consideration of the size, shape, number of sets, etc. of the hand towels 10 to be stored. can be done. At that time, the length (a) in the longitudinal direction of the outlet 21 is the longest distance from one end to the other end in a direction parallel to the longitudinal direction (see symbol x) of the storage box 20 when viewed from above. Say. The length (b) of the outlet 21 in the lateral direction is the longest length from one end to the other end in a direction parallel to the lateral direction (see symbol y) of the storage box 20 when viewed from above. say distance.

Modified examples of the shape of the outlet 21 are shown below, in which case the length in the longitudinal direction of the outlet (a), the length in the lateral direction of the outlet (b), the length in the longitudinal direction of the storage box ( x) and the length (y) of the storage box in the lateral direction.

FIG. 4 is a top view of a filmless storage box containing hand towels according to a second embodiment.

In the filmless storage box 2 containing a hand towel according to the second embodiment, an elongated opening is arranged along the longitudinal direction (see symbol x) as the outlet 31 of the storage box 30, and approximately A circular opening is formed. In this case, the length (a) of the outlet 31 in the longitudinal direction is the longest distance in the longitudinal direction of the outlet 31 . Further, the length (b) of the outlet 31 in the lateral direction is the longest distance of the outlet 31 in the lateral direction.

FIG. 5 is a top view of a filmless storage box containing hand towels according to a third embodiment.

In the filmless storage box 3 containing a hand towel according to the third embodiment, an elongated opening is arranged along the longitudinal direction (see symbol x) as an outlet 41 of the storage box 40, and both ends of the opening are substantially circular. of openings are formed. In this case, the length (a) of the outlet 41 in the longitudinal direction is the longest distance in the longitudinal direction of the outlet 41 . The length (b) of the outlet 41 in the lateral direction is the longest distance of the outlet 41 in the lateral direction.

FIG. 6 is a top view of a filmless storage box containing hand towels according to a fourth embodiment.

In the filmless storage box 4 containing hand towels according to the fourth embodiment, an elongated opening is arranged on a substantially diagonal line on the top surface of the storage box 50 as an outlet 51 for the storage box 50 when viewed from above. In this case, the length (a) of the outlet 51 in the longitudinal direction is the longest distance in the longitudinal direction of the outlet 51 . The length (b) of the outlet 51 in the lateral direction is the longest distance of the outlet 51 in the lateral direction.

<Manufacturing method>

The hand towel 10 described above can be obtained, for example, by making paper using a paper machine and then subjecting it to calendering or the like as necessary. Also, embossing or the like may be applied. Then, using a multi-stand interfolder processing machine, the hand towels 10 can be folded so as to overlap each other and compressed as necessary to obtain a hand towel laminate. The hand towel laminate thus obtained is stored and packaged in storage boxes 20, 30, 40, and 50 by a cartoner, packaging machine, or the like to obtain filmless storage boxes 1, 2, 3, and 4 containing hand towels. be able to.

The present invention will be described in more detail with reference to the following examples and comparative examples, but the present invention is in no way limited by the following examples.

<Example 1>

First, using the materials shown in Table 1, the process of manufacturing the paper hand towel 10 using a paper machine is performed, and the rectangular paper hand towel 10 shown in FIG. A hand towel 10 was produced. Subsequently, the obtained hand towels 10 were laminated by multi-stand interfolding so that 2 plies were alternately folded in a substantially V shape to obtain a hand towel laminate (120 sets of hand towels). The material of the hand towel 10 was NBKP 35% by mass, LBKP 60% by mass, and waste paper pulp 5% by mass.

(Production of filmless storage box 1 containing hand towel)

The obtained hand towel laminate was housed in a paper storage box 20 shown in FIGS. The dimensions and shapes in the table are outer dimensions unless otherwise specified.

<Examples 2 to 9, Comparative Examples 1 to 6>

A hand towel, a hand towel laminate, and a filmless storage box containing a hand towel were produced in the same manner as in Example 1, except that the conditions were changed as shown in Tables 1 and 2.

<Measurement of physical properties>

Various physical properties of each example and each comparative example were measured according to the following methods.

(basis weight)

The basis weight of the hand towel was measured according to JIS P 8124.

(paper thickness)

The paper thickness of the hand towel 10 is measured under the conditions of JIS P 8111 (23 ± 1 ° C., 50 ± 2% relative humidity using a thickness gauge (upright dial thickness gauge “PEACOCK R1-B type” manufactured by Ozaki Seisakusho)). Measurement was performed by applying a pressure of 3.7 kPa to the probe.

(Dry longitudinal strength (DMDT), dry transverse strength (DCDT))

The tensile strength in the longitudinal direction when dry (dry longitudinal strength, DMDT) and the tensile strength in the transverse direction when dry (dry transverse strength, DCDT) of the hand towel 10 were each measured based on the tensile test method of JIS P 8113. .

(TSA TS750)

With the tissue softness measuring device TSA, a two-ply sample of hand towels placed on the sample stage is pushed from above with a pushing pressure of 100 mN, and then rotated at a rotation speed of 2.0 (/sec). When the vibration of the sample table was measured with a vibration sensor, the intensity of the maximum peak of the first spectrum from the low frequency side (TS750), which was automatically acquired by the software on the tissue softness measurement device TSA, was as described above. A TSA apparatus manufactured by Emtec Electronic GmbH in Germany, whose Japanese agent is Sanyo Trading Co., Ltd., was used.

(Extraction resistance value)

The “top 3 to 15 sets” of the hand towel 10 removal resistance is the removal resistance of the 3rd to 15th sets from the top of the hand towels 10 stored in the storage box 20 (pulling out the hand towel 10 from the storage box 20 resistance). The "lower 3 to 30 sets" of the take-out resistance is the take-out resistance of the 3rd set to the 30th set from the bottom of the hand towels 10 stored in the storage box 20 (the resistance when pulling out the hand towels 10 from the storage box 20). resistance). These extraction resistances were measured according to the above-described measurement method based on the extraction resistance measurement method shown in FIG. Then, as described below, the extraction resistance was measured according to the conditions of each example and each comparative example.

The take-out direction of the hand towel 10 (see arrow F in FIG. 1) was the CD direction of the hand towel 10 and the longitudinal direction of the hand towel 10 (see symbol L in FIG. 2).

Unless otherwise specified, measurements and evaluations in the examples were carried out after holding in equilibrium under the temperature and humidity conditions (23±1° C., 50±2% RH) specified in JIS P 8111.

<Evaluation>

A sensory evaluation was performed in the following manner for the filmless storage box containing the hand towel of each example and each comparative example.

(Evaluation of how easy it is to take out the hand towel without tearing it)

Hand towels when the first 1 to 15 sets of hand towels stored in the storage box are taken out (that is, the 1st set immediately below the take-out opening to the 15th set are successively taken out) was evaluated for ease of withdrawal. Specifically, 50 people were targeted, and each person gave score evaluation in the range of 1 point to 5 points based on the following criteria.
・5 points: When taking out the hand towel from the storage box, it was able to be taken out particularly smoothly without tearing.
- 4 points: When taking out the hand towel from the storage box, it was able to be taken out smoothly without tearing.
- 3 points: The hand towel was not torn when taken out of the storage box, but was difficult to pull out.
- 1 to 2 points: When taking out the hand towel from the storage box, it was difficult to take out, and one or more pairs were torn.
Then, the arithmetic mean of the score evaluations of 50 people was taken, and comprehensive evaluation was made with "×", "◯", and "⊚" based on the following criteria.
"A": The average score of score evaluation by 50 persons was 4.0 points or more.
"◯": The average score of 50 persons' score evaluation was 3.0 or more and less than 4.0.
"x": The average score of 50 persons' score evaluation was less than 3.0 points.

(Dropback evaluation)

When the 1st to 30th sets of hand towels stored in the storage box were taken out (that is, 30 sets of used towels were taken out continuously), how many of the 30 sets were dropped back? counted For example, "0" in the table indicates that although 30 sets were taken out, none were dropped back (there were 0 sets).

(Evaluation of water absorption)

TWA was measured as an index of water absorption performance. First, a hand towel was cut into a square test piece of 76×76 mm, and its dry mass (W1) was measured. Then, after immersing this test piece in distilled water for 2 minutes, one corner of the test piece is placed on the top of the upper side, and the top and two adjacent corners are supported and stretched ( RH 100%), and the mass (W2) after standing for 30 minutes was measured. Then, the value of (W2-W1) was calculated and converted to TWA (g/m ² ) per 1 m ² of hand towel.

Tables 1 and 2 show the conditions and evaluation results of each example and each comparative example.

From the above, it was at least confirmed that the filmless storage box containing hand towels of this example is easy to take out the hand towels without tearing, less drop back occurs when taken out, and moreover, the hand towels have high water absorbency. rice field.

1, 2, 3, 4: Filmless storage box containing hand towel,
10: hand towels,
20, 30, 40, 50: storage box,
20a: a piece of paper in a storage box,
21, 31, 41, 51: outlet,
C: clip,
F: take-out direction,
W: Sheet length in the lateral direction of the hand towel (MD direction),
L: sheet length in the vertical direction of the hand towel (CD direction = take-out direction),
x: the length of the storage box in the longitudinal direction (horizontal direction),
y: the length of the storage box in the short direction (longitudinal direction),
h: height of storage box,
a: the length of the outlet in the longitudinal direction (horizontal direction),
b: the length of the outlet in the short direction (longitudinal direction),
100: (conventional) filmless storage box containing a hand towel,
200: (conventional) hand towel,
300: (conventional) storage box,
310: Ejection port (of a conventional storage box)

Claims (9)

A filmless storage box containing hand towels, in which a hand towel laminate in which two paper hand towels are folded so as to overlap each other is stored in a storage box with a filmless take-out opening,
The take-out direction of the hand towel is the CD (Cross Direction) direction of the hand towel,
The basis weight of the hand towel is 14.9 g/m ² or more and 17.9 g/m ² or less,
The paper thickness of the hand towel is 0.55 mm/10 ply or more and 0.71 mm/10 ply or less,
The hand towel has a dry lateral strength of 2.9 N/25 mm or more and 6.7 N/25 mm or less,
A ratio (a/x×100) of the longitudinal length (a) of the outlet to the longitudinal length (x) of the storage box is 61.7% or more and 92.5% or less,
A ratio (W/x×100) of the sheet length (W) in the lateral direction of the hand towel to the length (x) of the storage box in the longitudinal direction is 88.1% or more and 98.1% or less. ,
A filmless storage box containing a hand towel. A ratio (b/y×100) of the length (b) of the outlet in the width direction to the length (y) of the storage box in the width direction is 22.7% or more and 56.4% or less. be,
The filmless storage box containing a hand towel according to claim 1. The sheet length (L) in the vertical direction when one set of hand towels is unfolded and the length (y) in the lateral direction of the storage box satisfy the following relational expression:
The filmless storage box containing a hand towel according to claim 1 or 2.
81.8%≦(L/2)/y×100≦96.1% The hand towel has a dry longitudinal tensile strength (DMDT) of 12.7 N/25 mm or more and 17.3 N/25 mm or less.
A filmless storage box containing a hand towel according to any one of claims 1 to 3. Using the tissue softness measuring device TSA, the 2-ply sample of the hand towel placed on the sample stage was pressed from above with a rotor with blades at a pressing pressure of 100 mN, and then rotated at a speed of 2.0 (/sec). When rotating and measuring the vibration of the sample table with a vibration sensor,
The maximum peak intensity (TS750) of the first spectrum from the low frequency side, automatically acquired by the software on the tissue softness measuring device TSA, is 19.1 dBV ² rms or more and 27.3 dBV ² rms or less. ,
The filmless storage box containing a hand towel according to any one of claims 1 to 4. The height of the storage box is 30 mm or more and 65 mm or less,
The filmless storage box containing a hand towel according to any one of claims 1 to 5. The length (x) of the storage box in the longitudinal direction is 200 mm or more and 260 mm or less,
The length (y) of the storage box in the lateral direction is 95 mm or more and 125 mm or less,
A filmless storage box containing a hand towel according to any one of claims 1 to 6. The resistance to take out the hand towel from the storage box is 0.3 N or more and 1.4 N or less from the 3rd set to the 30th set from the bottom.
The filmless storage box containing a hand towel according to any one of claims 1 to 7. The resistance to take out the hand towel from the storage box is 0.9 N or more and 2.7 N or less from the 3rd set to the 15th set from the top.
The filmless storage box containing a hand towel according to any one of claims 1 to 8.

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