阅读说明：本技术 湿式片材层叠体、湿式片材包装体以及湿式片材层叠体的制造方法 (Wet-type sheet laminate, wet-type sheet package, and method for producing wet-type sheet laminate ) 是由 山下晶子 于 2019-09-17 设计创作，主要内容包括：本发明提供湿式片材层叠体、湿式片材包装体以及湿式片材层叠体的制造方法。湿式片材层叠体(110)通过将被折叠的多张湿式片材(111)以一张湿式片材(111)的端部被另一张湿式片材(111)的折返部分夹住的方式层叠而成,湿式片材(111)以对于基材片材产生含浸有药液的含浸部分(W)与不含浸有药液的非含浸部分(D)的方式含浸药液,含浸部分(W)与非含浸部分(D)形成为多个含浸部分(W)与多个非含浸部分(D)交替配置的条纹状。由此,能够降低在从包装体的取出口取出湿式片材时,湿式片材连续地被取出的担忧。(The invention provides a wet sheet laminate, a wet sheet package, and a method for manufacturing the wet sheet laminate. The wet sheet laminate (110) is formed by laminating a plurality of folded wet sheets (111) such that the end of one wet sheet (111) is sandwiched between the folded-back portions of the other wet sheet (111), the wet sheet (111) is impregnated with a chemical so as to produce impregnated portions (W) impregnated with the chemical and non-impregnated portions (D) not impregnated with the chemical with respect to the base sheet, and the impregnated portions (W) and the non-impregnated portions (D) are formed in a stripe shape in which a plurality of impregnated portions (W) and a plurality of non-impregnated portions (D) are alternately arranged. This can reduce the possibility that the wet sheets are continuously taken out when the wet sheets are taken out from the take-out opening of the package.)

1. A wet sheet laminate is formed by laminating a plurality of folded wet sheets so that an end of one wet sheet is sandwiched by a folded portion of another wet sheet,

the wet sheet laminate is characterized in that,

the wet sheet is impregnated with the chemical solution so that an impregnated portion impregnated with the chemical solution and a non-impregnated portion not impregnated with the chemical solution are formed in the base sheet,

the impregnated portion and the non-impregnated portion are formed in a stripe shape in which a plurality of impregnated portions and a plurality of non-impregnated portions are alternately arranged.

2. The wet sheet laminate according to claim 1,

in one of the wet sheets and the other wet sheet disposed thereon, the impregnated portion and the non-impregnated portion are disposed at positions shifted from each other in a plan view.

3. The wet sheet laminate according to claim 2,

in one of the wet sheets and the other wet sheet disposed thereon, the impregnated portions and the non-impregnated portions are disposed in a staggered manner.

4. The wet sheet laminate according to any one of claims 1 to 3,

when the wet sheet laminate is viewed in a plan view, the impregnated portion and the non-impregnated portion are formed in a stripe shape parallel to the fold of the wet sheet.

5. The wet sheet laminate according to any one of claims 1 to 4,

the wet sheet is formed in a rectangular shape,

is folded back to one surface side of the wet sheet at a first fold line substantially parallel to one side,

and is folded back toward the other surface side of the wet sheet at a second fold formed between the first fold and the one side and substantially parallel to the one side,

a third fold formed between the second fold and the one side and substantially parallel to the one side, the third fold being folded back toward the other surface of the wet sheet so as to surround an outer periphery of the first fold,

stacking a plurality of the wet sheets:

a portion between the first fold and another edge opposed to the one edge, the other edge facing upward,

the other side of one of the wet sheets opposite to the one side is sandwiched between a portion between the first fold and the second fold of the other wet sheet and a portion between the first fold and the other side of the other wet sheet opposite to the one side, whereby the other wet sheet is positioned on the one wet sheet.

6. A wet sheet package characterized in that,

the wet sheet laminate according to any one of claims 1 to 5, which is housed in a package provided with a take-out opening.

7. A method for manufacturing a wet-type sheet material laminate, comprising:

a folding step of folding the base material sheet;

a chemical solution impregnation step of impregnating the folded base sheet with a chemical solution, and forming a plurality of impregnated portions impregnated with the chemical solution and a plurality of non-impregnated portions not impregnated with the chemical solution into a stripe shape in which the impregnated portions and the non-impregnated portions are alternately arranged; and

and a laminating step of laminating the plurality of base sheet materials impregnated with the chemical solution.

8. A method for manufacturing a wet-type sheet material laminate, comprising:

a chemical solution impregnation step of impregnating the base sheet with a chemical solution, and forming a plurality of impregnated portions impregnated with the chemical solution and a plurality of non-impregnated portions not impregnated with the chemical solution into a stripe shape in which the impregnated portions and the non-impregnated portions are alternately arranged;

a folding step of folding the base sheet impregnated with the chemical solution; and

and a laminating step of laminating the folded base sheet.

Technical Field

The present invention relates to a wet-type sheet laminate, a wet-type sheet package, and a method for producing the wet-type sheet laminate.

Background

Conventionally, a so-called pop-up wet sheet laminate is known which can be used continuously by pulling up the next sheet when the uppermost sheet is pulled out in order to facilitate the use of the laminate when a plurality of household wet sheets such as wet tissues, toilet cleaners, kitchen cleaners, etc. are laminated to form a laminate.

As such a pop-up wet sheet laminate, for example, a wet sheet laminate formed by laminating sheets folded in a zigzag shape so that a part of the sheets is overlapped is known (for example, see patent document 1).

Patent document 1: japanese patent No. 6188234

The pop-up wet sheet laminate is stored in a predetermined package and used to take out wet sheets one by one from a take-out port provided in the package, but in the conventional wet sheet laminate, when one wet sheet is taken out from the take-out port, the next wet sheet may be continuously taken out.

In this regard, in the wet sheet laminate described in patent document 1, in order to prevent this, it is intended to reduce the chemical impregnation rate of the portion where the end portions of the upper and lower wet sheets overlap each other, thereby suppressing unnecessary running out of the next wet sheet when one wet sheet is taken out from the take-out port, but the effect thereof is not necessarily sufficient.

Disclosure of Invention

The invention provides a wet sheet laminate, a wet sheet package, and a method for manufacturing the wet sheet laminate, which can reduce the possibility that wet sheets are continuously taken out when the wet sheets are taken out from an outlet of the package.

In order to solve the above problem, the invention described in claim 1 is a wet sheet laminate in which a plurality of folded wet sheets are laminated such that an end portion of one wet sheet is sandwiched by a folded portion of another wet sheet,

the above wet-type sheet laminate is characterized in that,

the wet sheet is impregnated with the chemical solution so that an impregnated portion impregnated with the chemical solution and a non-impregnated portion not impregnated with the chemical solution are formed in the base sheet,

the impregnated portion and the non-impregnated portion are formed in a stripe shape in which a plurality of impregnated portions and a plurality of non-impregnated portions are alternately arranged.

According to the present invention, it is possible to provide a wet sheet laminate that can reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal opening of the package.

The invention according to claim 2 is characterized in that, in the wet-type sheet laminate according to claim 1,

in one of the wet sheets and the other wet sheet disposed thereon, the impregnated portion and the non-impregnated portion are disposed at positions shifted from each other in a plan view.

According to the present invention, it is possible to provide a wet sheet laminate which can further reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal opening of the package.

The invention according to claim 3 is the wet-type sheet laminate according to claim 2, wherein,

in one of the wet sheets and the other wet sheet disposed thereon, the impregnated portions and the non-impregnated portions are disposed in a staggered manner.

According to the present invention, it is possible to provide a wet sheet laminate which can further reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal opening of the package.

The invention according to claim 4 is the wet-type sheet laminate according to any one of claims 1 to 3, characterized in that,

when the wet sheet laminate is viewed in a plan view, the impregnated portion and the non-impregnated portion are formed in a stripe shape parallel to the fold of the wet sheet.

According to the present invention, the production of the wet-type sheet laminate is facilitated.

The invention according to claim 5 is the wet-type sheet laminate according to any one of claims 1 to 4, characterized in that,

the above wet sheet is formed in a rectangular shape,

is folded back to one surface side of the wet sheet at a first fold line substantially parallel to one side,

and is folded back toward the other surface side of the wet sheet at a second fold line formed between the first fold line and the one side and substantially parallel to the one side,

a third fold line formed between the second fold line and the one side and substantially parallel to the one side, the third fold line being folded back toward the other surface side of the wet sheet so as to surround the outer periphery of the first fold line,

stacking a plurality of the wet sheets:

the other side faces upward in a portion between the first fold and the other side opposed to the one side,

the other side of one of the wet sheets facing the one side is sandwiched between a portion of the other wet sheet between the first fold and the second fold and a portion of the other wet sheet between the first fold and the other side facing the one side, whereby the other wet sheet is positioned on the one wet sheet.

According to the present invention, it is possible to provide a wet sheet laminate which can further reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal opening of the package.

The invention described in claim 6 is a wet sheet package, and the wet sheet laminate described in any one of claims 1 to 5 is housed in a package provided with a take-out opening.

According to the present invention, it is possible to provide a wet sheet package that can reduce the risk of continuously taking out wet sheets when the wet sheets are taken out from the take-out opening of the package.

The invention described in claim 7 is a method for manufacturing a wet-type sheet laminate, including:

a folding step of folding the base material sheet;

a chemical solution impregnation step of impregnating the folded base sheet with a chemical solution, and forming a plurality of impregnated portions impregnated with the chemical solution and a plurality of non-impregnated portions not impregnated with the chemical solution into a stripe shape in which the impregnated portions and the non-impregnated portions are alternately arranged; and

and a laminating step of laminating the plurality of base sheet materials impregnated with the chemical solution.

According to the present invention, it is possible to provide a method for manufacturing a wet sheet laminate, which can reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal opening of the package.

The invention described in claim 8 is a method for manufacturing a wet-type sheet laminate, including:

a chemical solution impregnation step of impregnating the base sheet with a chemical solution, and forming a plurality of impregnated portions impregnated with the chemical solution and a plurality of non-impregnated portions not impregnated with the chemical solution into a stripe shape in which the impregnated portions and the non-impregnated portions are alternately arranged;

a folding step of folding the base sheet impregnated with the chemical solution; and

and a laminating step of laminating the folded base sheet.

According to the present invention, it is possible to provide a method for manufacturing a wet sheet laminate, which can reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal opening of the package.

According to the present invention, it is possible to provide a wet sheet laminate, a wet sheet package, and a method for manufacturing the wet sheet laminate, which can reduce the risk of continuous removal of wet sheets when the wet sheets are removed from the removal port of the package.

Drawings

Fig. 1A is a perspective view of the wet sheet package according to the embodiment viewed from obliquely above.

Fig. 1B is a perspective view of the wet sheet package according to the embodiment viewed obliquely from below.

Fig. 2 is a side view of the wet sheet according to the embodiment in a folded state. Further, the interval between the folded sheets is enlarged as compared with the actual.

Fig. 3 is a plan view of the wet sheet according to the embodiment in a folded state.

Fig. 4 is a cross-sectional view of section IV-IV of fig. 1A. The interval between the folded sheets and the interval between the stacked sheets are enlarged as compared with the actual interval. The number of sheets stacked is smaller than the actual number.

Fig. 5 is a side view of a wet sheet laminate according to a modification. The interval between the folded sheets and the interval between the stacked sheets are enlarged as compared with the actual interval. The number of sheets stacked is smaller than the actual number.

Detailed Description

Hereinafter, a wet-type sheet laminate 110 and a wet-type sheet package 100 in which the wet-type sheet laminate 110 is housed in a package 120 according to an embodiment of the present invention will be described with reference to fig. 1A to 5. However, the technical scope of the present invention is not limited to the illustrated examples.

In the following description, as shown in fig. 1A, the front-back direction, the left-right direction, and the up-down direction, and the X axis, the Y axis, and the Z axis are defined. That is, in the wet sheet package 100, the side of the bag body 121 where the ejection opening 121a is formed is set to be upper, the opposite side thereof is set to be lower, the side of the wet sheet package 100 where one of the long sides is located in a plan view is set to be rear, the opposite side thereof is set to be front, the right-hand side thereof is set to be right when facing rearward, the left-hand side thereof is set to be left when facing rearward, the axis along the front-rear direction is set to be X-axis, the axis along the left-right direction is set to be Y-axis, and the axis along the up-down direction is set to be Z-axis.

[ Structure of embodiment ]

As shown in fig. 1A, the wet sheet package 100 according to the embodiment houses a wet sheet laminate 110 formed by laminating a plurality of wet sheets 111 in a package 120.

{ Wet sheet Stack }

The wet sheet stack 110 is formed by stacking the wet sheets 111 after being folded by a predetermined folding method, and is a so-called pop-up type, and when the uppermost wet sheet 111 is pulled up, the next wet sheet 111 is also pulled up, so that the wet sheet stack 110 can be continuously used.

(constitution of Wet sheet)

The wet sheet 111 is not particularly limited, and any sheet formed by impregnating a base sheet with a chemical, such as a normal rectangular wet tissue, a toilet cleaner, or a kitchen cleaner, can be used.

Specifically, the base sheet is preferably a nonwoven fabric produced by using predetermined fibers as a fibrous material and using a known technique such as hydroentangling, air-through, air-laying, point-bonding, spun-bonding, or needle-punching, for example, as a wet tissue. Examples of the predetermined fibers include cellulose fibers such as rayon, lyocell, tencel, and cotton, polyolefin fibers such as polyethylene, polypropylene, and polyvinyl alcohol, polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, and polyamide fibers such as nylon. These may be used alone or in combination of two or more.

The base sheet is preferably formed to have a basis weight of 30 to 100gsm, a size of 100 to 200mm in the MD direction (the direction of travel of paper on the paper machine), and a size of 100 to 200mm in the CD direction (the direction perpendicular to the direction of travel of paper on the paper machine), for example, in the case of a wet tissue. The weight per unit area means a weight per JIS P8124: 2011 basis weight measured.

As the chemical to be impregnated into the base sheet, any chemical can be used depending on the use of the wet sheet 111, and for example, in the case of a wet tissue, it is preferable to contain purified water, a preservative, a pH adjuster, and the like.

In this case, the chemical solution impregnation rate is preferably 100 mass% or more and 400 mass% or less. The chemical solution impregnation rate is a rate obtained by measuring the mass of the base sheet of the wet sheet 111 before chemical solution impregnation and the mass of the chemical solution impregnated therein, and calculating the mass of the impregnated chemical solution relative to the mass of the base sheet before chemical solution impregnation.

The pattern of impregnation of the base sheet with the chemical in the wet sheet 111 will be described later.

(method of folding Wet sheet)

The wet sheet laminate 110 is formed by folding and laminating a plurality of rectangular wet sheets 111, respectively, but first, a method of folding each wet sheet 111 will be described with reference to fig. 2.

First, the wet sheet 111 is folded back at a first fold 111e substantially parallel to one side of the wet sheet 111 (the side is referred to as a first side 111a, and the side facing the first side 111a is referred to as a second side 111b) toward one surface side of the wet sheet 111 (the surface is referred to as a first surface 111c, and the surface opposite thereto is referred to as a second surface 111 d).

The wet sheet 111 is folded back toward the second surface 111d of the wet sheet 111 at a second fold 111f formed between the first fold 111e and the first side 111a and substantially parallel to the first side 111a and the second side 111 b.

The wet sheet 111 is folded back toward the second surface 111d so as to surround the outer periphery of the first fold 111e at a third fold 111g formed between the second fold 111f and the first side 111a and substantially parallel to the first side 111a and the second side 111 b.

The wet sheet 111 is folded back toward the first surface 111c at a fourth fold 111h formed between the third fold 111g and the first side portion 111a and substantially parallel to the first side portion 111a and the second side portion 111 b.

The fourth fold 111h is preferably folded back toward the first surface 111c as described above, but may be folded back toward the second surface 111 d.

A portion between the second side portion 111b and the first fold 111e is referred to as a main portion 111i, a portion between the first fold 111e and the second fold 111f is referred to as a first folded portion 111j, a portion between the second fold 111f and the third fold 111g is referred to as a second folded portion 111k, a portion between the third fold 111g and the fourth fold 111h is referred to as a third folded portion 111l, and a portion between the fourth fold 111h and the first side portion 111a is referred to as a fourth folded portion 111 m.

In this case, it is preferable that the width of the main portion 111i (the length in the direction perpendicular to the first side portion 111a and the second side portion 111b) is 40% to 45% of the width of the entire wet sheet 111, the width of the first folded portion 111j is 14% to 20% of the width of the entire wet sheet 111, the width of the second folded portion 111k is 14% to 20% of the width of the entire wet sheet 111, the width of the third folded portion 111l is 17% to 23% of the width of the entire wet sheet 111, and the width of the fourth folded portion 111m is 1% to 5% of the width of the entire wet sheet 111.

Further, in order to form the third fold 111g to surround the outer periphery of the first fold 111e, the width of the second folded portion 111k needs to be greater than or equal to the width of the first folded portion 111 j.

The fourth folded portion 111m is preferably formed to overlap the first folded portion 111j and the second folded portion 111k in the vertical direction.

The wet sheet 111 preferably includes the fourth fold 111h and the fourth folded portion 111m, but this is not essential, and the portion up to the first edge 111a may not be provided as the third folded portion 111 l.

The first and second sides 111a and 111b are short sides of the rectangular wet sheet 111, and the first fold 111e, the second fold 111f, the third fold 111g, and the fourth fold 111h are formed substantially parallel to the short sides of the wet sheet 111, and the wet sheet 111 is folded back in the longitudinal direction, whereby the wet sheet laminate 110 is formed such that the longitudinal direction of the wet sheet 111 in an unfolded state is the short side direction of the wet sheet laminate 110 in a plan view, which is preferable in terms of reducing the size of the wet sheet laminate 110.

However, although it is not preferable to form the wet sheet laminate 110 to be small, the first fold 111e, the second fold 111f, the third fold 111g, and the fourth fold 111h may be formed to be substantially parallel to the long side of the wet sheet 111, and the wet sheet 111 may be folded back in the short side direction.

(impregnation pattern of chemical solution)

As shown in fig. 2 and 3, each wet sheet 111 is impregnated with the chemical solution in a folded state so that a plurality of impregnated portions W impregnated with the chemical solution and a plurality of non-impregnated portions D not impregnated with the chemical solution are alternately arranged in a stripe shape in a plan view.

The number of the stripes obtained by combining the impregnated portion W and the non-impregnated portion D is preferably 2 to 20, more preferably 4 to 10, when the wet sheet 111 is viewed in a plan view in a folded state. In the state where the wet sheets 111 are spread out, the number of the wet sheets is preferably 4 to 30, and more preferably 10 to 20.

In addition, not only the portion that does not contain the chemical solution at all, but also the portion that slightly contains the chemical solution due to the influence of the impregnated portion W of the surrounding wet sheet 111 after lamination is included in the non-impregnated portion D.

Specifically, as shown in fig. 3, the wet sheet 111 is formed in a stripe shape parallel to each fold line formed on the wet sheet 111, and the impregnated portions W and the non-impregnated portions D are alternately arranged in a direction (X direction in fig. 3) orthogonal to each fold line formed on the wet sheet 111, thereby impregnating with the chemical solution.

The impregnated portion W is preferably formed to have a width of 2mm to 40mm, more preferably 5mm to 20mm, in a direction (X direction in fig. 3) perpendicular to each fold line formed in the base sheet.

The non-impregnated portion D is preferably formed to have a width of 2mm to 40mm, more preferably 5mm to 20mm, in a direction (X direction in fig. 3) perpendicular to each fold line formed in the base sheet.

{ elongation of sheet }

The elongation of the wet sheet 111 constituting the wet sheet laminate 110 after a force of 1.5N is applied by the following test method is preferably 100mm or less.

The elongation of the wet sheet 111 was measured by cutting the main portion 111i of the wet sheet 111 impregnated with the chemical solution so that the width in the direction perpendicular to the stripes formed by the impregnated portion W and the non-impregnated portion D became 50mm, and then stretching the cut main portion 111i by 1.5N in the direction along the stripes formed by the impregnated portion W and the non-impregnated portion D using a tensile tester (TENSILON RTG1210, manufactured by a & D) at a speed of 100mm/min and a distance between chucks of 100 mm.

Further, when a binder is added to the base sheet, and the base sheet is a spunlace nonwoven fabric, the elongation of the wet sheet 111 can be reduced by increasing the water pressure at the time of formation, increasing the compression ratio, and the like.

(method of laminating sheet)

The wet sheet laminate 110 is formed by laminating a plurality of wet sheets 111, which are folded as described above and impregnated with the chemical liquid, such that the second surface 111d faces upward in the main portion 111 i.

Specifically, as shown in fig. 4, the wet sheet stacks 110 are formed by alternately stacking the wet sheets 111 arranged such that the first side portion 111a side and the second side portion 111b side face opposite to each other.

The vicinity of the second side portion 111b of the main portion 111i of each wet sheet 111 is disposed between the first folded portion 111j of one upper wet sheet 111 and the main portion 111i, except for the uppermost wet sheet 111.

In this case, the width between the first folded portion 111j and the main portion 111i of the upper wet sheet 111 positioned on one sheet is preferably 5% to 35% of the width of the main portion 111i of the lower wet sheet 111 in the vicinity of the second side portion 111b of the main portion 111i of the lower wet sheet 111.

As shown in fig. 4, it is most preferable that the wet sheets 111 are stacked such that the impregnated portion W of each wet sheet 111 and the impregnated portions W of the previous and next wet sheets 111 are not overlapped and are arranged alternately in a plan view.

However, the present invention is not limited to this, and the impregnated portion W of each wet sheet 111 and the impregnated portion W of the wet sheet 111 positioned one above and one below may be laminated so as to be substantially at the same position in a plan view, or the impregnated portion W of each wet sheet 111 and the impregnated portion W of the wet sheet 111 positioned one above and one below may be laminated so as to form both a portion where they overlap and a portion where they do not overlap.

The number of the laminated wet sheets 111 is not particularly limited, but is preferably 40 to 80.

{ packaging body }

As shown in fig. 1A, the package 120 includes a bag body 121 having an outlet 121A formed in an upper surface thereof for taking out the wet sheets 111 one by one, and a lid member 122 openably and closably covering the outlet 121A, and as shown in fig. 4, the wet sheet laminate 110 is stored and used therein.

Fig. 1A, 1B, and 4 show a case where the first side portion 111A and the second side portion 111B of the wet sheet 111 forming the wet sheet laminate 110 are substantially parallel to the longitudinal direction of the package 120 when viewed from above.

(bag main body)

The bag main body 121 is formed of a sheet material into a bag shape. As the sheet, for example, a single material or a composite material of a synthetic resin sheet such as polyethylene, polypropylene, polyethylene terephthalate, polyester, polyamide, or polyvinyl chloride, or a composite sheet obtained by laminating these synthetic resin sheets with aluminum foil, paper, or the like can be used.

The thickness of the sheet is preferably 40 to 70 μm.

The sheet constituting the bag body 121 is joined along the longitudinal direction of the bag body 121 on the bottom surface side of the bag body 121 to constitute a center seal portion 121b, and is connected at both longitudinal end portions of the bag body 121 to constitute end seal portions 121c, 121 c.

The size of the bag body 121 is determined according to the size of the wet sheet laminate 110 to be stored, but it is preferable that the wet sheet laminate 110 can be stored with a small margin so as to prevent the package 120 from being unnecessarily large and to facilitate the removal of the wet sheet 111 at the start of use.

(outlet)

The shape of the ejection port 121A formed in the upper surface of the bag body 121 is not particularly limited, but is preferably an oval shape as shown in fig. 1A, and in order to impart an appropriate resistance to the pulled-out wet sheet 111, the size of the ejection port 121A is preferably 30mm to 50mm in the longitudinal direction of the ejection port 121A, 10mm to 30mm in the short-side direction, more preferably 35mm to 45mm in the longitudinal direction, and 13mm to 18mm in the short-side direction.

The longitudinal direction is preferably formed substantially parallel to the direction of each fold of the wet sheet 111 housed inside.

As shown in fig. 4, the ejection port 121a is preferably formed at a position not overlapping the third folded portion 111l and the fourth folded portion 111m of the wet sheet 111 constituting the wet sheet stack 110 in plan view, and only the main portion 111i of the wet sheet 111 is visible from the ejection port 121a in plan view.

This prevents the user from gripping the third folded portion 111l or the fourth folded portion 111m and pulling out the wet sheet 111.

(cover parts)

As shown in fig. 1A, the lid member 122 is configured to openably and closably cover the ejection port 121A with a sheet separate from the bag body 121. As a material of the sheet constituting the cover member 122, the same material as that of the sheet constituting the bag body 121 can be used.

The thickness of the sheet constituting the cover member 122 is preferably 60 to 80 μm thicker than the sheet constituting the bag body 121.

The shape of the lid member 122 is not particularly limited as long as it can completely cover the outlet 121a, and may be any shape such as a rectangular shape or an elliptical shape.

A pressure-sensitive adhesive such as polyester, acrylic, or rubber is applied to the back surface of the lid member 122, and the lid member 122 is adhered to the bag main body 121 so as to openably and closably cover the outlet 121 a.

As shown in fig. 1A, one end of the cover member 122 is fixed to the bag body 121, and a tab 122a protruding from the one end is provided on the other end, and the pressure-sensitive adhesive is not applied only to the lower surface of the tab 122 a. This facilitates opening and closing of the lid member 122 by the pinch portion 122 a.

{ manufacturing method }

Next, an example of a method for manufacturing the wet sheet package 100 according to the embodiment will be described.

(step 1: folding Process)

First, the base sheet of each wet sheet is folded toward the first surface 111c in the vicinity of the first edge 111a to form a fourth fold 111h, and then folded toward the second surface 111d at a position spaced apart from the fourth fold 111h by a predetermined distance in the direction of the second edge 111b to form a second fold 111 f.

The base sheet is folded at the second fold 111f so that the double-folded portion is folded to the opposite side of the fourth fold 111h, thereby forming the first fold 111e and the third fold 111g collectively.

This enables the base sheet of each wet sheet 111 to be folded as shown in fig. 2.

(step 2: impregnation step with chemical solution)

Next, the base sheet folded in step 1 is impregnated with the chemical solution.

At this time, the base sheet is impregnated with the chemical solution using, for example, a chemical solution application nozzle. Specifically, the base sheet is moved and passed under the chemical solution application nozzle arranged to extend in a direction orthogonal to the direction of the fold formed in the base sheet in a direction orthogonal to the direction of extension of the chemical solution application nozzle (a direction parallel to the fold formed in the base sheet), and thereby is impregnated with the chemical solution.

The chemical liquid application nozzle is provided with a plurality of minute discharge holes for discharging the chemical liquid downward, but the portions provided with such discharge holes are formed only at positions that coincide with the impregnated portions W of the wet sheet 111 in the direction orthogonal to the moving direction of the base sheet, whereby the plurality of impregnated portions W and the plurality of non-impregnated portions D can be formed in a stripe shape in which the plurality of impregnated portions W and the plurality of non-impregnated portions D are alternately arranged with respect to the base sheet passing through the chemical liquid application nozzle.

The method of impregnating with the chemical solution is not limited to the method of ejecting the chemical solution from the nozzles as described above, and for example, a roller coated with the chemical solution in a pattern corresponding to the impregnated portion W and the non-impregnated portion D of the wet sheet 111 may be used to perform roller transfer.

(step 3: laminating Process)

Next, a plurality of wet sheets 111 formed by folding the base sheet and impregnating the base sheet with the chemical solution are stacked such that the second surface 111d faces upward in the main portion 111 i.

Specifically, as shown in fig. 4, the wet sheet stacks 110 are formed by alternately stacking wet sheets 111 arranged such that the first side portion 111a side and the second side portion 111b side face opposite to each other, and stacking a predetermined number of wet sheets 111 such that the vicinity of the second side portion 111b of the main portion 111i of each wet sheet 111 is sandwiched between the first folded portion 111j and the main portion 111i of one upper wet sheet 111, except the uppermost wet sheet 111.

(step 4: packaging Process)

The wet-type sheet laminate 110 thus formed is wrapped with a sheet forming the bag body 121 of the package 120, and then the sheet is joined to the bottom surface side of the bag body 121 along the longitudinal direction of the bag body 121 to form a center seal portion 121b, and is connected to both ends of the bag body 121 in the longitudinal direction to form end seal portions 121c and 121c, and is stored in the bag body 121.

Thereafter, the lid member 122 is attached so as to cover the outlet 121a of the bag body 121.

[ Effect of the embodiment ]

According to the wet sheet package 100 of the embodiment, as shown in fig. 2 and 3, the wet sheets 111 forming the wet sheet laminate 110 are laminated by forming the plurality of impregnated portions W and the plurality of non-impregnated portions D in a stripe shape in a plan view of the wet sheet laminate 110.

In the case where wet sheets are stacked, the chemical liquid between the upper and lower wet sheets is hydrogen-bonded to firmly adhere the wet sheets to each other, which becomes a cause for continuously taking out the wet sheets.

Even if the non-impregnated portion having the same area is provided, for example, when the wet sheet is divided into two parts and the impregnated portion and the non-impregnated portion are provided, or when the area of a single impregnated portion is increased in a planar view of the wet sheet laminate, the wet sheets may be firmly bonded to each other at the impregnated portion, and sufficient connection cannot be prevented.

In contrast, according to the present embodiment, when the wet sheet laminate 110 is viewed in a plan view, the plurality of impregnated portions and the plurality of non-impregnated portions are arranged in a stripe pattern, whereby the adhesion of the wet sheets to each other can be reduced in a nearly uniform manner over the entire surface, and the effect of preventing the wet sheets from being connected to each other can be enhanced.

Further, as shown in fig. 4, when the wet sheets 111 are stacked such that the impregnated portion W of each wet sheet 111 and the impregnated portions W of the previous and next wet sheets 111 are alternately arranged in a staggered manner without overlapping in a plan view, there is no portion where each wet sheet 111 and the impregnated portion W of the previous and next wet sheets 111 contact each other, and therefore, the effect of preventing the wet sheets from being connected can be maximized.

However, the manner of obtaining the effect of preventing the wet sheets from being connected is not limited to the staggered arrangement.

First, in the case where the impregnated portion W of each wet sheet 111 is disposed at a position shifted from the impregnated portion W of the wet sheet 111 positioned one above and one below, and both of the overlapped portion and the non-overlapped portion are generated in a plan view, the area of the impregnated portion W is narrow although the area is generated, and the portion where the non-impregnated portion D is in contact with each other and the portion where the non-impregnated portion D is in contact with the impregnated portion W are also formed, so that the adhesion of the wet sheets 111 to each other can be reduced as compared with the case where the entire wet sheet 111 is impregnated with the chemical solution, and the case where the impregnated portion W and the non-impregnated portion D are disposed alternately is inferior, but a sufficient effect can be obtained.

Even when the impregnated portion W of each wet sheet 111 and the impregnated portion W of the wet sheet 111 positioned one above and one below are stacked at substantially the same position in plan view, a portion where the impregnated portions W contact each other is generated, but a portion where the non-impregnated portions D contact each other is also formed, so that the adhesion of the wet sheets 111 to each other can be weakened as compared with the case where the entire wet sheet 111 is impregnated with the chemical solution, and although the impregnated portion W is inferior in the case where it is arranged at a position shifted from the impregnated portion W of the wet sheet 111 positioned one above and one below, a certain effect can be obtained.

In the wet sheet package 100 according to the embodiment, as shown in fig. 4, the upper and lower wet sheets 111 are overlapped with each other, and 6 sheets are overlapped with each other in the vicinity of the second side portion 111b of the main portion 111i of the lower wet sheet 111 sandwiched between the main portion 111i, the third folded portion 111l, and the fourth folded portion 111m of the upper wet sheet 111 and the first folded portion 111j and the second folded portion 111 k.

Accordingly, since resistance when the main portion 111i is gripped and the wet sheet 111 is pulled out from the vicinity of the second side portion 111b by the take-out port 121a of the package 120 becomes large and the wet sheet 111 is not taken out unless a large force is applied, it is possible to further reduce the possibility that the wet sheet 111 immediately below is continuously taken out when one wet sheet 111 is taken out.

This effect is enhanced by forming the fourth fold 111h and the fourth folded portion 111m, but even if they are not provided, a certain effect can be obtained because 5 sheets are overlapped.

When one wet sheet 111 is pulled out from the take-out opening 121a of the package 120, a large resistance is applied to the overlapped portion, the first fold 111e and the third fold 111g are opened, and further, the gap between the main portion 111i and the first folded portion 111j is opened. Thereby, the vicinity of the second side portion 111b of the main portion 111i of the next wet sheet 111 sandwiched between the main portion 111i and the first folded portion 111j is opened, and the next sheet is easily dropped.

Therefore, according to this, it is possible to reduce the possibility that the wet sheets 111 immediately below are continuously taken out when one wet sheet 111 is taken out.

In the wet sheet package 100 according to the embodiment, when the main portion 111i is gripped and the wet sheet 111 is pulled out from the take-out opening 121a of the package 120, the second fold 111f is not easily unfolded, and therefore the wet sheet 111 is taken out while being folded at the second fold 111f in the vicinity of the first side portion 111 a.

In the conventional wet sheet folded in a zigzag shape, since the entire wet sheet 111 is taken out in an unfolded state, when the wet sheet 111 is taken out, the vicinity of the end opposite to the portion gripped by the user is easily stretched by resistance at the time of taking out.

[ modified examples ]

In the above embodiment, the case where the base sheet is folded, then the base sheet is impregnated with the chemical solution, and then the wet sheets are laminated to form the wet sheet laminate was described, but the method for producing the wet sheet laminate is not limited to this.

First, the base sheet is impregnated with the chemical solution in a stripe shape, and then folded by the folding method shown in fig. 2, and then wet sheets are laminated by the laminating method shown in fig. 4 to form a wet sheet laminate.

Alternatively, the base sheet may be folded by the folding method shown in fig. 2, laminated by the laminating method shown in fig. 4 to form a laminate, and then impregnated with the chemical solution to form a wet-type sheet laminate.

However, in this case, it is only possible to form a wet sheet laminate in which the impregnated portion W of each wet sheet and the impregnated portion W of the wet sheet positioned one above and one below the impregnated portion W are substantially at the same position in a plan view, and when the number of wet sheets forming the wet sheet laminate is large and the wet sheet laminate is thick in the upper and lower directions, the striped pattern formed by the impregnated portion W and the non-impregnated portion D may be unclear in the wet sheet positioned below the upper surface to which the chemical solution is applied, which is not preferable.

In the above-described embodiment, the case where the impregnated portion W and the non-impregnated portion D are arranged in a stripe shape along a direction parallel to the fold line (Y direction in fig. 2 and 3) and are alternately arranged in a direction orthogonal to the fold line (X direction in fig. 2 and 3) in the wet sheet 111 has been described, but the present invention is not limited to this, and for example, the impregnated portion W and the non-impregnated portion D may be arranged in a stripe shape along a direction orthogonal to the fold line (X direction in fig. 2 and 3) and be alternately arranged in a direction parallel to the fold line (Y direction in fig. 2 and 3). In addition, the wet sheet may be formed to be inclined with respect to the fold.

However, from the viewpoint of ease of production, the impregnated portion W and the non-impregnated portion D are preferably formed in a stripe shape along a direction parallel to the fold line of the wet sheet (Y direction in fig. 2 and 3).

In the above-described embodiment, the case where the wet sheets 111 are folded by the folding method shown in fig. 2 and the folded wet sheets 111 are stacked by the stacking method shown in fig. 4 has been described, but the specific folding method of the wet sheets and the stacking method thereof are not limited to this.

For example, even in the wet sheet laminate 110A shown in fig. 5 in which the wet sheets 111A folded in a zigzag shape as in the related art are partially stacked, the effect of providing the impregnated portion W and the non-impregnated portion D in a stripe shape in which they are alternately arranged when the wet sheet laminate 110A is viewed in a plan view can be similarly obtained.

In this case, as shown in fig. 5, the impregnated portion W of each wet sheet 111A and the impregnated portion W of the previous and next wet sheets 111A are preferably alternately arranged so as not to overlap each other in a plan view, and are preferably formed in a stripe shape along a direction (Y direction in fig. 5) parallel to the fold line of the wet sheet 111A, but the present invention is not limited thereto.

However, in order to further enhance the effect of preventing the wet sheets 111 from being continuously taken out, it is most preferable to fold the wet sheets 111 by the folding method shown in fig. 2 and stack the folded wet sheets 111 by the stacking method shown in fig. 4.

Examples

Next, the results of tests performed on wet sheet packages according to examples and comparative examples of the present invention, which relate to the measurement of the adhesion force between wet sheets and the probability of continuous removal during removal, will be described.

[ structures of examples and comparative examples ]

Wet sheet packages according to the following examples and comparative examples were prepared.

{ example 1}

(Wet sheet Stack)

< Structure of substrate sheet >

Size: a rectangular shape having MD direction of 135mm and CD direction of 175mm

Fiber material: rayon 50% by mass, PET (polyethylene terephthalate) 50% by mass

The preparation method comprises the following steps: spunlace nonwoven fabric

Weight per unit area: 30 gsm.

< composition of medicinal liquid >

The components: purified water 99% by mass or more, and antiseptic (benzoic acid, phenoxyethanol, etc.) less than 1% by mass

Impregnation rate of chemical solution: 230 percent.

< method of lamination and impregnation >

The base sheet was folded by the folding method shown in fig. 2 so that the main portion 111i was 75mm wide in the CD direction, the first folded portion 111j was 30mm wide in the CD direction, the second folded portion 111k was 30mm wide in the CD direction, the third folded portion 111l was 35mm wide in the CD direction, and the fourth folded portion 111m was 5mm wide in the CD direction by forming a first fold 111e, a second fold 111f, a third fold 111g, and a fourth fold 111h by folding parallel to the MD direction.

The base sheet thus folded is impregnated with the chemical solution in a stripe shape parallel to the MD direction and having impregnated portions W and non-impregnated portions D alternately arranged in the CD direction.

Specifically, when the base sheet is folded in a plan view, the base sheet is impregnated with the chemical solution so that three impregnated portions W are formed with a width of about 12.5mm (12 to 13mm) in the CD direction, three non-impregnated portions D are formed with a width of about 12.5mm (12 to 13mm) in the CD direction, and the end of the base sheet on which the second side portion 111b is formed is the impregnated portion W. In this case, when the base sheet is in a developed state, seven impregnated portions W are formed in the CD direction, and seven non-impregnated portions D are formed in the CD direction.

As shown in fig. 4, 80 wet sheets 111 are stacked such that the vicinity of the second side portion 111b of the main portion 111i of the wet sheet 111 located below is sandwiched between the first folded portion 111j and the main portion 111i of the upper wet sheet 111 by 20mm in the CD direction.

The impregnated portion W of each wet sheet 111 is arranged at a position shifted from the impregnated portion W of the wet sheet 111 positioned one above and one below, and both a portion where the impregnated portions W overlap each other and a portion where they do not overlap are generated in a plan view.

< elongation of sheet >

The wet sheet elongation when a force of 1.5N was applied by the method described on page 7, line 2 to page 8, line 7 of the above description was 71.6 mm.

(packaging body)

< bag body >

Sheet material: the material PET/LLDPE, with a thickness of 62 μm

Shape: a pillow pack type shown in fig. 1A and 1B.

Size: the perimeter of the inner surface side in a cross section in the longitudinal direction in a plan view (cross section along the YZ plane in fig. 1A and 1B) excluding the end seal portions 121c and 121c is 360mm, and the perimeter of the inner surface side in a cross section in the short direction in a plan view (cross section along the XZ plane in fig. 1A and 1B) is 260mm

An outlet: an oval shape having a major axis of 35mm and a minor axis of 15 mm. Formed in the center of the upper surface of the pouch body. The cap member is used when the ejection port is opened by removing the cap member.

{ example 2}

The wet sheet elongation after applying a force of 1.5N by the method described on page 7, line 2 to page 8, line 7 of the above description was 101.0 mm.

The formulation of the fibrous material constituting the base sheet was not changed from that of example 1, and the extension amount of the wet sheet was made larger than that of example 1 by reducing the water pressure at the time of forming the spunlace nonwoven fabric and reducing the compression of the base sheet.

The other structure is the same as embodiment 1.

{ comparative example 1}

The base sheet is uniformly impregnated with the chemical solution. The impregnation rate of the chemical solution was 230% as in example 1, only by changing the pattern of impregnation from a stripe pattern to a uniform pattern as a whole.

The other structure is the same as embodiment 1.

[ test methods ]

The following tests were carried out using the wet sheet package according to the above examples and comparative examples.

{ measurement of the force with which sheets adhere to each other }

The adhesion force between the wet sheets was measured for the wet sheet packages of the examples and comparative examples.

Specifically, after the wet sheet laminate is taken out from the package, a digital load cell (IMADA, DS2-200N) is connected to a portion of the wet sheet 111 that overlaps the take-out port 121a when the wet sheet is packaged in a planar view, and the wet sheet 111 is stretched in the vertical direction in this state, and the maximum value of the force applied when the sheet is peeled off from the next sheet is measured in the 1 st to 79 th sheets, and the average value thereof is obtained.

{ test on probability of being taken out continuously at the time of taking out }

With respect to the wet sheet packages used in the above examples and comparative examples, a plurality of wet sheets were continuously taken out, and the probability of being continuously taken out at this time was calculated.

Specifically, the wet sheets are pulled out one by one from each sheet package in a state where the upper surface is not restrained and the vicinity of one end portion in the longitudinal direction in a plan view is sandwiched from both sides in the short-side direction in a plan view (a state where the thumb is in contact with one side surface and the middle finger and the index finger are in contact with the other side surface facing the one side surface and sandwiched by these fingers).

Specifically, from a state in which 80 wet-type sheets were stored, all 80 sheets were pulled out one by one.

When the next sheet is taken out one by one and the second sheet is completely taken out from the package, it is determined that the sheets are continuously taken out and the number of such sheets is counted.

In addition, two tests were performed, and the average was taken as the number of continuously taken out sheets. Therefore, for example, if the number of sheets is one at the first time and 0 at the second time, the number of sheets to be continuously taken out is 0.5.

[ test results ]

The results of the test are shown in table 1.

[ Table 1]

	Example 1	Example 2	Comparative example 1
				Force of adhesion of sheets to each other (N)	1.1	-	1.5
Number of sheets taken out continuously	9	18	28
				Probability of being continuously taken out (%)	11.3	22.5	35.0

[ evaluation ]

As is clear from a comparison between example 1 and comparative example 1, when the wet sheet laminate is formed by wet sheets impregnated with the chemical solution such that the plurality of impregnated portions W and the plurality of non-impregnated portions D are in the form of stripes alternately arranged when the wet sheet laminate is viewed in plan view, the adhesion force between the sheets becomes weaker than when the wet sheet laminate is formed by wet sheets uniformly impregnated with the chemical solution as a whole.

Therefore, when one sheet is pulled out, the force by which the sheet under it is adhered to be stretched is weakened by the pulled-out sheet, and therefore the sheet is not easily pulled out continuously.

In addition, in the actual pull-out test, it was also known that the probability of continuous removal can be reduced by forming the wet sheet laminate by wet sheets impregnated with the chemical solution such that the plurality of impregnated portions W and the plurality of non-impregnated portions D are in the form of stripes alternately arranged when the wet sheet laminate is viewed in plan, as compared with the case of forming the wet sheet laminate by wet sheets uniformly impregnated with the chemical solution as a whole.

Further, as is clear from a comparison between example 1 and example 2, the wet sheet stack is formed by applying a force of 1.5N by the method described in the methods on page 7, line 2 to page 8, line 7 of the above description, and the elongation is 100mm or less, whereby the probability of continuously taking out wet sheets can be reduced.

Industrial applicability of the invention

The present invention can be applied to the field of manufacturing wet sheet laminates and wet sheet packages.

Description of the reference numerals

100 … wet sheet package; 110. 110a … wet sheet laminate; 111. 111a … wet sheet; 111a … first edge portion; 111b … second side portion; 111c … first side; 111d … second face; 111e … first fold; 111f … second fold; 111g … third fold; 120 … packaging; 121a … outlet; a W … impregnated portion; d … non impregnated part.