JP2018033560A - Wet sheet and wet sheet package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wet sheet whose pop-up properties have been improved by suppressing friction force between sheets, and a wet sheet package in which the wet sheets are laminated and stored.SOLUTION: In a wet sheet W in which a base material sheet S is impregnated with medicinal liquid for a wet sheet, the base material sheet S includes a high fiber density region 22 and a low fiber density region 21 whose fiber density is smaller than that of the high fiber density region 22, and the medicinal liquid for a wet sheet contains silicone oil within a range of 0.1-5.0 mass%.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wet sheet and a wet sheet package in which the pop-up property of the wet sheet is improved by suppressing the frictional force between the sheets.

Conventionally, wet sheets containing liquid chemicals such as water and alcohol are known. These wet sheets are usually stored in a bag-like packaging container in a state of being folded in a pop-up manner, and are used by being pulled out one by one.
However, the pop-up type wet sheet is taken out in a state where the subsequent sheet is attached when the sheet is pulled out, and a plurality of sheets may be taken out at the same time.

  Therefore, conventionally, there is known a wet tissue package in which a cutout portion is provided in the takeout port of the package so that the next sheet is less likely to jump out of the cutout portion, and the sheets can be taken out one by one ( Patent Document 1).

  In addition, there is known a wet sheet laminate in which sheets are easily taken out one by one by folding them with a folding method in which the next sheet is less likely to adhere when stored in a packaging container (Patent Document 2).

Japanese Patent No. 5858682 Japanese Patent No. 5651315

However, if it is necessary to provide a cutout portion at the take-out port or use a special folding method, there is a problem that production of a wet sheet is greatly restricted.
Therefore, a new method for improving the pop-up property of the wet sheet itself has been demanded.

  Accordingly, an object of the present invention is to provide a wet sheet in which the pop-up property of the wet sheet is improved by suppressing the frictional force between the sheets, and a wet sheet packaging body in which the wet sheets are stacked and stored. .

In order to solve the above problems, the invention described in claim 1
In the wet sheet in which the base sheet is impregnated with the chemical solution for the wet sheet,
The base sheet has a high fiber density region and a low fiber density region having a fiber density smaller than the high fiber density region,
The chemical liquid for wet sheet contains silicone oil in the range of 0.1 to 5.0% by mass.

The invention according to claim 2 is the wet sheet according to claim 1,
The base sheet is characterized in that a herringbone pattern, a striped pattern, or a lattice pattern is formed by the high fiber density region and the low fiber density region.

The invention according to claim 3 is the wet sheet according to claim 1 or 2,
The base sheet has the high fiber density region formed by an embossed portion.

The invention according to claim 4 is the wet sheet according to any one of claims 1 to 3,
The base sheet is impregnated with the chemical solution for wet sheet within a range of 150 to 500% by mass with respect to the dry mass of the base sheet.

The invention according to claim 5 is a wet sheet packaging body in which a laminate in which a plurality of the wet sheets according to any one of claims 1 to 4 are laminated is housed in a main body part,
The main body includes an opening on the upper surface,
The wet sheet on the uppermost surface of the laminate can be taken out from the opening by a pop-up method.

  According to the present invention, the pop-up property of the wet sheet itself can be improved by suppressing the frictional force between the sheets.

It is an external appearance perspective view which shows a wet sheet packaging body. It is sectional drawing which shows a wet sheet packaging body. It is a top view which shows a part of base material sheet in which the cedar pattern was formed. It is a top view which shows a part of base material sheet in which the striped pattern was formed. It is a top view which shows a part of base material sheet in which the lattice pattern was formed. It is sectional drawing of the base material sheet of the VI-VI part of FIGS. It is a figure which shows the example of the state from which two wet sheets were taken out in succession. It is a top view which shows a part of base material sheet which concerns on the comparative example in which the mesh pattern was formed. It is sectional drawing of the base material sheet of the IX-IX part in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present specification, “to” is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value.

  As shown in FIG. 1, the wet sheet packaging body 1 according to the present embodiment includes a bag-like main body portion 10 having an opening 11 on an upper surface, and a film label-like lid member 20 that covers the opening 11 in an openable and closable manner. .

In the wet sheet package 1, a laminate L in which a plurality of wet sheets W are laminated is accommodated in the main body 10 (FIG. 2). And it is comprised so that the wet sheet W of the uppermost surface of the laminated body L can be taken out from the opening part 11 with which the main-body part 10 was equipped.
In the following description, in wet sheet packaging body 1, the surface on which opening 11 is formed is referred to as the top surface, and the surface opposite to the surface on which opening 11 is formed is referred to as the bottom surface.

The main body 10 is formed in a bag shape from a sheet material. As the sheet material, for example, a single material or a composite material of a synthetic resin sheet such as polyethylene, polypropylene, polyethylene terephthalate, polyester, polyamide, and polyvinyl chloride, or a composite sheet obtained by bonding these synthetic resin sheets and aluminum foil, paper, etc. Etc. can be used.
Further, the sheet material constituting the main body 10 is joined along the longitudinal direction of the main body 10 on the bottom surface side (not shown) of the main body 10, and is opposed to both ends of the main body 10 in the longitudinal direction. They are joined together.

  The shape of the opening 11 formed on the upper surface of the main body 10 is not particularly limited, and may be an ellipse as shown in FIG. 1 or may be a circle, a rectangle, a shape with rounded square corners, or the like. It can be of any shape.

The lid member 20 is configured to cover the opening 11 so as to be openable and closable by a sheet piece separate from the main body 10. As the material of the lid member 20, similarly to the main body portion 10, a single material or a composite material of a synthetic resin sheet such as polyethylene, polypropylene, polyethylene terephthalate, polyester, polyamide, and polyvinyl chloride, or these synthetic resin sheet and aluminum foil, A composite sheet laminated with paper or the like can be used. The shape of the lid member 20 is not particularly limited as long as the opening 11 can be completely covered, and may be an arbitrary shape such as a rectangular shape or an elliptical shape.
Further, a pressure sensitive adhesive such as polyester, acrylic or rubber is applied to the back surface of the lid member 20, and the lid member 20 is adhered to the main body 10 so as to cover the opening 11 in an openable and closable manner. It has come to be.

  As for the wet sheet W, a laminated body L in which a plurality of sheets are alternately folded so that the wet sheet W can be continuously taken out from the opening 11 is housed in the main body 10. That is, when the wet sheet W is pulled out from the opening portion 11, a so-called pop-up type is drawn in which the upper end of the next wet sheet W is pulled out to a position where the upper end protrudes from the opening portion 11. The number of wet sheets W to be stacked is not particularly limited, but is preferably about 10 to 100 sheets.

The base sheet S of the wet sheet W is a non-woven fabric manufactured by a known technique such as spun lace, air through, air laid, point bond, spun bond, needle punch, etc., using predetermined fibers as fiber materials. Examples of the predetermined fiber 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. Is mentioned. These can be used alone or in combination of two or more.
The base sheet S may be formed of paper.

The base sheet S has a high fiber density region 22 and a low fiber density region 21 having a fiber density smaller than that of the high fiber density region 22 from the viewpoint of suppressing the frictional force between the sheets when the sheets overlap. Is preferred.
The “high fiber density region 22” in the present specification means a region having a fiber density higher than that of the low fiber density region 21, and is not particularly limited as long as the density is larger than that of the low fiber density region 21.
The “low fiber density region 21” means a region having a fiber density smaller than that of the high fiber density region 22, and is not particularly limited as long as the density is smaller than that of the high fiber density region 22.

Moreover, it is preferable that the base sheet S is formed with a herringbone pattern, a striped pattern, or a lattice pattern by the high fiber density region 22 and the low fiber density region 21. 3 to 5, the line-shaped convex portion formed of the high fiber density region 22 and the line-shaped concave portion formed of the low fiber density region 21 respectively show a herringbone pattern (FIG. 3) and a striped pattern (FIG. 4). ) Shows a part of the base sheet S on which the lattice pattern (FIG. 5) is formed. Moreover, the cross section of the base material sheet S is shown in FIG.
By forming these cedar patterns, striped patterns, or lattice patterns on the base sheet S, when the sheets overlap, the contact area between the sheets can be reduced and the frictional force can be suppressed. For this reason, when the wet sheet W folded in a pop-up manner is taken out, it becomes difficult to take out the next sheet in a state where the next sheet is attached, so that it becomes easy to take out one sheet at a time.

Although the convex portion is the high fiber density region 22 and the concave portion is the low fiber density region 21, the present invention is not limited to this, and the convex portion is the low fiber density region 21 and the concave portion is the high fiber density region 22. There may be.
3 to 5, halftone dots are attached to the high fiber density region 22 for convenience of explanation.

Moreover, it is preferable that the number of lines in the herringbone pattern, the stripe pattern, and the lattice pattern formed by the low fiber density region 21 and the high fiber density region 22 is 3 to 9 / cm. Here, the number of lines (lines / cm) in this specification means how many linear low fiber density regions 21 and linear high fiber density regions 22 exist per 1 cm. Yes. That is, it means how many lines are present in a direction perpendicular to the direction parallel to the linear low fiber density region 21 and the linear high fiber density region 22 provided in parallel (the direction in which the number is the largest). doing. That is, when the number is 4 / cm, it means that two linear low fiber density regions 21 and two high fiber density regions 22 are provided in 1 cm.
When the number of lines is less than 3 / cm, the surface of the base sheet S approaches a flat surface, so that the frictional force between the sheets when the sheets overlap is increased, and once captured dirt is easily transferred. Become. Further, if the number of lines exceeds 9 / cm, the volume of the space formed by the low fiber density region 21 and the high fiber density region 22 becomes too small. It becomes impossible to secure.

  FIG. 6 shows a cross section of the base sheet S on which a herringbone pattern, a striped pattern, and a lattice pattern are formed. The height (thickness) Hm from the back surface of the high fiber density region 22 is, for example, preferably about 150 to 800 μm, and more preferably about 200 to 650 μm. Further, the height (thickness) Hd from the back surface of the low fiber density region 21 is, for example, preferably about 100 to 500 μm, and more preferably about 150 to 400 μm. From another viewpoint, the height difference between the low fiber density region 21 and the high fiber density region 22 is preferably about 50 to 300 μm, and more preferably about 75 to 150 μm. When the height difference is less than 50 μm, it is not possible to expect a large amount of capturing effect by the low fiber density region 21, and a desired amount of wiping cannot be ensured. This is because the thickness is increased, and the flexibility and the touch feeling are impaired.

Moreover, the base material sheet S is good also as having the high fiber density area | region 22 formed of the embossing part provided by compressing in the thickness direction. Thereby, like the case where the pattern mentioned above is formed, when the sheet | seat has overlapped, the contact area between sheets can reduce and a frictional force can be suppressed. For this reason, when the wet sheet W folded in a pop-up manner is taken out, it becomes difficult to take out the next sheet in a state where the next sheet is attached, so that it becomes easy to take out one sheet at a time.
Moreover, an embossing part is good also as providing with respect to the flat base material sheet S, and also providing an embossing part with respect to the base material sheet S in which the above-mentioned herringbone pattern, stripe pattern, or lattice pattern was formed. It's also good. Moreover, you may provide an embossing part itself so that a herringbone pattern, a striped pattern, or a lattice pattern may be formed.

The base sheet S of the wet sheet W according to the present embodiment is impregnated with a predetermined wet sheet chemical. As for the chemical | medical solution for wet sheets, silicone oil is contained in the range of 0.1-5.0 mass% in water (purified water). When the base sheet S is impregnated with the chemical solution for wet sheets, the frictional force between the sheets is suppressed and the pop-up property of the wet sheet W itself is improved. Therefore, when the wet sheet W folded by the pop-up method is taken out, the next sheet becomes difficult to adhere, so that it becomes easy to take out the sheets one by one.
Here, the concentration of the silicone oil is set to 0.1% by mass or more in the chemical solution from the viewpoint of manifesting the effect of the present invention. Further, when the concentration of the silicone oil exceeds 5.0% by mass, bubbles may adhere to the sheet due to the foaming of the chemical solution, and when the wet sheet W is touched, the hand may become dirty (whiten). The mass is not more than%.

As the silicone oil, for example, amino-modified silicone can be used, and among the amino-modified silicones, it is preferable to use a silicone quaternium compound such as silicone quaternium-17.
For wet sheet chemicals, preservatives such as ethanol, sodium benzoate and phenoxyethanol, antibacterial agents such as benzalkonium chloride, humectants such as propylene glycol, pH adjusters such as citric acid and sodium citrate Etc. may be impregnated.

  Moreover, it is desirable to impregnate the chemical | medical solution for wet sheets of this embodiment within the range of 150-500 mass% with respect to the dry mass of the base material sheet S of the wet sheet W.

[Technical effects of the present invention]
The wet sheet W of the present embodiment is a wet sheet W in which a base sheet S is impregnated with a chemical liquid for wet sheet, and the wet chemical liquid for wet sheet contains 0.1 to 5.0% by mass of silicone oil. Contain within the range. When silicone oil is contained in the range of 0.1 to 5.0% by mass, when the base sheet S is impregnated, the friction force between the sheets is effectively suppressed, and the wet sheet W itself pops up. Can improve sex. For this reason, when the wet sheet W folded in a pop-up manner is taken out, it becomes difficult to take out the next sheet in a state where the next sheet is attached, so that it becomes easy to take out one sheet at a time.

Moreover, it is preferable that the base sheet S has the high fiber density area | region 22 and the low fiber density area | region 21 from the viewpoint of expression of the effect of the wet sheet W of this embodiment. Moreover, it is preferable that the base sheet S is formed with a herringbone pattern, a striped pattern, or a lattice pattern by the high fiber density region 22 and the low fiber density region 21. Furthermore, the wet sheet W of this embodiment is good also as the base material sheet S having the high fiber density area | region 22 formed of the embossing part.
As a result, when the sheets overlap, the contact area between the sheets can be reduced, and the frictional force can be suppressed. For this reason, when the wet sheet W folded in a pop-up manner is taken out, it becomes difficult to take out the next sheet in a state where the next sheet is attached, so that it becomes easy to take out one sheet at a time.

  In addition, the wet sheet W of the present embodiment has the base sheet S impregnated with a chemical solution for wet sheet within a range of 150 to 500% by mass with respect to the dry mass of the base sheet S. The effects of the invention can be expressed more effectively.

  It should be thought that embodiment disclosed this time of this invention is an illustration and restrictive at no points. The scope of the present invention is not limited to the above detailed description, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. .

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

[Example 1]
<Conditions for implementation>
As the base material sheet S of the wet sheet W, the following nonwoven fabric was prepared.
Nonwoven fabric type Rayon: PET (polyethylene terephthalate): PP (polypropylene) PE (polyethylene) = 40: 40: 20
・ Sheet size 130mm × 185mm
・ Sheet weight 34g / m ²
・ Sheet pattern Sayaka pattern (see Fig. 3)
High fiber density region: 50 g / m ² per unit area, height (thickness) Hm 275 μm
Low fiber density area: 15 g / m ² per unit area, height (thickness) Hd 175 μm
Number of wires: 5 / cm

Next, in the water (purified water), the following components were added so that the concentration of silicone quaternium-17 as a silicone oil would be the concentration shown in Table 1 below. Each drug solution was prepared.
Sodium benzoate 0.125% by mass
Benzalkonium chloride 0.1% by mass
Phenoshiethanol 0.1% by mass
Citric acid 0.02% by mass
Sodium citrate 0.01% by mass
EDTA-2Na 0.05 mass%
IPBC (butyl carbamate propynyl iodide) 0.005 mass%
PG (propylene glycol) 0.1% by mass

  Next, these wet sheet chemicals are impregnated into the base sheet S so as to be 340% by mass with respect to the dry mass of the base sheet S to prepare wet sheets 1-1 to 1-7. did. Next, 20 sheets of each of the wet sheets 1-1 to 1-7 are laminated in a pop-up manner by irregular Z-folding, and a main body 10 (90 mm long × 90 mm long) having an opening 11 (20 mm long × 45 mm wide) on the upper surface. It was housed inside (width 130 mm × height 30 mm) (see FIG. 1).

  And the wet sheet W was taken out one by one from the opening part 11 of the wet sheet packaging body 1 manufactured as mentioned above, and the frequency | count that there was a series was counted. Here, “there was a series” means that when one wet sheet W is taken out, two sheets are taken out in a state where the next sheet is attached, as shown in FIG.

<Result>
From the results of Table 1, when the concentration of the silicone oil is 0.10 to 5.00% by mass, the number of consecutive times is reduced as compared with the comparative example of less than 0.10%. It turned out that it became easy to take out one sheet at a time. In addition, although it was also carried out in the case of exceeding 5.00% by mass, bubbles were attached to the sheet due to the foaming of the chemical solution, and when the wet sheet W was touched, the hand sometimes became dirty (whitened), so the number of consecutive times was counted. I did not.

[Example 2]
<Conditions for implementation>
As the base material sheet S of the wet sheet W, the following nonwoven fabrics N1 to N5 were prepared.

(Nonwoven fabric N1)
Nonwoven fabric type Rayon: PET (polyethylene terephthalate): PP (polypropylene) PE (polyethylene) = 40: 40: 20
・ Sheet size 130mm × 185mm
・ Sheet pattern No pattern, embossed part ・ Sheet height (thickness)
430 μm
・ Sheet weight 40g / m ²

Next, nonwoven fabrics N2 to 5 were prepared. The nonwoven fabrics N2 to N5 are obtained by changing the nonwoven fabric N1 as follows, and the others are the same as the nonwoven fabric N1.
(Nonwoven fabric N2)
・ Sheet weight 37g / m ²
Sheet pattern Mesh pattern (a pattern in which a plurality of linear fiber regions 23 intersect each other in a mesh pattern, and FIG. 8 is a plan view and FIG. 9 is a cross-sectional view. (There is a non-fiber region 24 that is shaped.)
Fiber area: 37 g / m ² per unit area, height (thickness) H560 μm
Non-fiber region: 1 mm long x 2 mm wide, 8 / cm ²

(Nonwoven fabric N3)
・ Sheet weight 34g / m ²
・ Sheet pattern Sayaka pattern (see Fig. 3)
High fiber density region: 50 g / m ² per unit area, height (thickness) Hm 225 μm
Low fiber density area: 15 g / m ² per unit area, height (thickness) Hd 175 μm
Number of wires: 5 / cm

(Nonwoven fabric N4)
・ Sheet weight 37g / m ²
・ Sheet pattern Lattice pattern (see Fig. 5)
High fiber density region: 50 g / m ² per unit area, height (thickness) Hm 225 μm
Low fiber density area: 25 g / m ² per unit area, height (thickness) Hd 125 μm
Number of wires: 5 / cm

(Nonwoven fabric N5)
・ Sheet weight 37g / m ²
· Embossments pattern embossments located 1 mm × 1 mm sheets 2 relative to the entire sheet / cm ²
・ Sheet height (thickness)
350 μm

Next, the following components were added and mixed in water (purified water) to prepare a chemical solution A for wet sheets according to the example.
(Chemical solution A for wet sheet)
Silicone quaternium-17 0.5% by mass
Sodium benzoate 0.125% by mass
Benzalkonium chloride 0.1% by mass
Phenoshiethanol 0.1% by mass
Citric acid 0.02% by mass
Na citrate 0.01% by mass
EDTA-2Na 0.05 mass%
IPBC (butyl carbamate propynyl iodide) 0.005 mass%
PG (propylene glycol) 0.1% by mass

(Chemical solution B for wet sheet)
Of the components of the chemical solution A for wet sheet, only the silicone quaternium-17 was not added, and the other components were the same to prepare the chemical solution B for wet sheet according to the comparative example.

  Next, the non-woven fabrics N1 to N5 that are the base sheet S are impregnated with the chemical solutions A and B for the wet sheet so as to be 340% by mass with respect to the dry mass of the base sheet S. Wet sheets 2-1 to 2-10 were prepared as shown. Next, 20 sheets of each of the wet sheets 2-1 to 2-12 are stacked in a pop-up manner by irregular Z-folding, and the main body 10 (90 mm long × 90 mm long) having an opening 11 (vertical 20 mm × width 45 mm) on the upper surface. It was housed inside (width 130 mm × height 30 mm) (see FIG. 1).

  And the wet sheet W was taken out one by one from the opening part 11 of the wet sheet packaging body 1 manufactured as mentioned above, and the frequency | count that there was a series was counted. Also, the number of sheet depressions was counted. Here, “the number of depressions” means that the next wet sheet W does not come out when one wet sheet W is taken out. This means the number of times that the wet sheet W has fallen.

<Result>
From the results shown in Table 2, when the base sheet S to which the herringbone pattern, the lattice pattern, and the embossed portion are applied contains a predetermined concentration of silicone oil, the number of consecutive times is drastically reduced, and the wet sheet W is taken out. It turned out that it became easy to take out one by one.
In addition, the wet sheet W having the mesh pattern on the base sheet S has a continuous number of times of 0, but it has been found that sheet dropping occurs twice and is not suitable as the wet sheet W. . It is considered that the sagging occurred because the frictional force between the sheets becomes too weak when there is a portion where no fiber is present.

DESCRIPTION OF SYMBOLS 1 Wet sheet packaging body 10 Main-body part 11 Opening part 20 Cover material 21 Low fiber density area | region 22 High fiber density area | region W Wet sheet S Base material sheet L Laminate

Claims (5)

In the wet sheet in which the base sheet is impregnated with the chemical solution for the wet sheet,
The base sheet has a high fiber density region and a low fiber density region having a fiber density smaller than the high fiber density region,
The wet sheet chemical composition contains silicone oil in a range of 0.1 to 5.0% by mass.   The wet sheet according to claim 1, wherein the base sheet is formed with a herringbone pattern, a striped pattern, or a lattice pattern by the high fiber density region and the low fiber density region.   The said base material sheet has the said high fiber density area | region formed of the embossing part, The wet sheet of Claim 1 or Claim 2 characterized by the above-mentioned.   The said base material sheet is impregnated with the chemical | medical solution for wet sheets in the range of 150-500 mass% with respect to the dry mass of the said base material sheet, The any one of Claims 1-3 characterized by the above-mentioned. The wet sheet according to item. A laminated body in which a plurality of wet sheets according to any one of claims 1 to 4 are laminated is a wet sheet packaged body accommodated in a main body part,
The main body includes an opening on the upper surface,
The wet sheet package is configured so that the uppermost wet sheet of the laminate can be taken out from the opening by a pop-up method.

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