JP7795293B2 - Wet towel, wet towel roll, and wet towel package - Google Patents

Description

The present invention relates to wet towels, wet towel rolls, and wet towel packages using the same.

Wet towels are used to wipe the human body or objects. They can be used in a variety of ways. For example, individually wrapped wet towels are made by rolling a large nonwoven fabric into a stick shape and wrapping each one individually. Such large products are often used, for example, for wiping the body.

As an example of such wet towels, Patent Document 1 discloses convocation wet tissues in which a fiber sheet is impregnated with a deodorant liquid and stored in a sealed container. Patent Document 2 also discloses portable wet tissues in which a sheet made of cellulose fiber or a composite fiber of cellulose fiber and synthetic fiber, cut into a shape suitable for body wiping when unfolded, is folded several times and rolled up into a stick shape, and strong acidic water sealed and packaged in an inert film is packaged together in a film-like material.

In relation to such a wet towel manufacturing device, Patent Document 3 discloses a packaging device for fabric products, etc., that wraps fabric products, etc., wound into a rod shape, in film. The device is equipped with a pair of film supplying means that supply film from both sides of the fabric product, etc., and an adhesive means that adhesively bonds the films around the fabric product, etc., inserted between the films supplied by the film supplying means. When inserting the fabric product, etc., between the films, the film is supplied relatively quickly from one of the film supplying means, thereby rotating the fabric product, etc., between the films.

Japanese Utility Model Application Laid-Open Publication No. 01-032693 Registered Utility Model No. 3043153 Patent No. 3681262

Regarding the wet towels mentioned above, for example, wet towels used for wiping the body are required to have a wiping effect that allows every inch of the body to be wiped clean with just one towel. They also need to be hypoallergenic enough to be able to wipe away sebum and dirt without irritating the human skin. Furthermore, in low-temperature environments such as winter or cold regions, wet towels are sometimes heated using a microwave oven or hot water heater before use, and it is necessary that the wiping effect does not decrease when the wet towel is heated in this way due to the evaporation of the chemical solution. Wet towels used for wiping objects are also required to have a high wiping effect and that the wiping effect does not decrease due to the evaporation of the chemical solution.

Furthermore, the above-mentioned wet towels must not only have a high wiping effect on people, objects, and other objects to be wiped, and not lose their wiping effect due to evaporation of the chemical solution, but also must not stick to each other when the sheets are spread out during use or when stacked sheets are used one by one, and must not be sticky during use. However, a wet towel that can meet all of these requirements at a high level has not yet been developed.

The present invention was made in light of these circumstances, and aims to provide wet towels, wet towel rolls, and wet towel packages using the same that have a high wiping effect, are not reduced in wiping effect due to evaporation of the chemical solution, do not stick together between sheets, and are not sticky during use.

As a result of intensive research into achieving the above-mentioned object, the present inventors have discovered that a wet towel can be obtained by impregnating a sheet containing nonwoven fabric with a chemical solution, wherein the nonwoven fabric contains 50 to 85% by mass of pulp, the water absorption (TWA) of the sheet in a dry state is 150 to 350 g/ ^m2 , and the ratio of the mass of the chemical solution impregnated into the sheet in a dry state to the mass of the sheet in a dry state (impregnation ratio) is 200 to 400%, and have completed the present invention based on this discovery.

In other words, the present invention is as follows:

(1)
This wet towel is a sheet containing nonwoven fabric impregnated with a chemical solution, wherein the nonwoven fabric contains 50 to 85% by mass of pulp, the water absorption (TWA) of the sheet in a dry state is 150 to 350 g/ ^m2 , and the ratio of the mass of the chemical solution impregnated into the sheet in a dry state to the mass of the sheet in a dry state (impregnation ratio) is 200 to 400%.
(2)
The wet towel according to (1), wherein the basis weight of the sheet in a dry state is 30 to 65 g/ ^m2 .
(3)
The wet towel according to (1) or (2) has a lateral tensile strength (WCD) of 300 to 800 gf/25 mm, and an expansion ratio (lateral elongation) in the short direction of the wet towel of 40 to 120%.
(4)
The wet towel according to any one of (1) to (3) is in a sheet form, and is a wet towel roll body in which the wet towel is at least wound into a roll body.
(5)
(4) A wet towel package comprising the wet towel roll body described above and a film packaging bag for storing the wet towel roll body.

The present invention provides wet towels, wet towel rolls, and wet towel packages using the same that have a high wiping effect, are not affected by the evaporation of the chemical solution, do not stick together between sheets, and are not sticky during use.

FIG. 1 is a perspective view of an example of a wet towel roll body according to the present embodiment. FIG. 2 is a conceptual diagram showing an example of a procedure for folding the wet towel according to this embodiment to obtain the wet towel roll body shown in FIG. FIG. 3 is a perspective view of an example of a wet towel package according to this embodiment.

The following describes in detail the form for carrying out the present invention (hereinafter simply referred to as the "present embodiment"). The following present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be carried out with appropriate modifications within the scope of its gist.

In the drawings, identical elements will be given the same reference numerals, and duplicate explanations will be omitted. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right will be based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to those shown.

Furthermore, in this specification, terms with "approximately" attached indicate the meaning of the term excluding "approximately" within the scope of the technical common sense of a person skilled in the art, and also include the meaning itself excluding "approximately." Furthermore, the MD direction of a wet towel is the machine direction in which the wet towel sheet is made, and the CD direction is the direction perpendicular to the MD direction (cross direction). Furthermore, the "lateral direction" of a wet towel means the CD direction, the "longitudinal direction" means the MD direction, the "longitudinal direction" means the CD direction, and the "transverse direction" means the MD direction.

Figure 1 is a perspective view of an example of a wet towel roll body according to this embodiment.

The wet towel 10 according to this embodiment is a wet towel in which a sheet containing nonwoven fabric is impregnated with a chemical solution, the nonwoven fabric containing 50 to 85% by mass of pulp, the water absorption (TWA) of the sheet in a dry state is 150 to 350 g/ ^m2 , and the ratio of the mass of the chemical solution impregnated into the sheet in a dry state to the mass of the sheet in a dry state (impregnation ratio) is 200 to 400%.

(Wet towel)

The wet towel 10 is a nonwoven fabric containing 50 to 85% by mass of pulp. If the pulp content (pulp ratio) is less than 50% by mass, the chemical solution retention will be insufficient, and, for example, the wiping area per wet towel 10 will be reduced. Furthermore, if the pulp content is higher than 85%, the sheets will tend to stick together when the wet towel 10 is folded or stacked, making it difficult to unfold, for example. The lower limit of the pulp content is preferably 55% by mass or more, and more preferably 60% by mass or more. Furthermore, the upper limit of the pulp content is preferably 80% by mass or less, and more preferably 75% by mass or less.

The pulp is not particularly limited, but examples include bleached softwood kraft pulp (NBKP) made from radiata pine, slash pine, southern pine, lodgepole pine, spruce, Douglas fir, etc. NBKP may be used alone or in combination of two or more types.

The nonwoven fabric may be a pulp-containing nonwoven fabric that contains not only pulp but also a resin. When the nonwoven fabric contains a resin, the type of resin may be polyolefin, polyester, polylactic acid, etc. Among these, polyolefin is preferable. When the nonwoven fabric contains a resin, the resin content is preferably less than 50% by mass, more preferably less than 45% by mass, and even more preferably less than 40% by mass. The upper limit of the resin content is preferably greater than 20% by mass, and more preferably greater than 25% by mass.

Nonwoven fabrics that can be used include those made by integrating pulp-containing fibers with recycled fibers such as rayon, natural fibers such as cotton, and synthetic fibers such as polyethylene, polypropylene, and polyethylene terephthalate using processing methods such as chemical bonding, spunlace, spunbond, needlepunch, airlaid, wet spunlace, spunbond, and meltbond.

Specific examples of nonwoven fabrics include spunbond nonwoven fabrics and spunbond-meltblown composite nonwoven fabrics made by laminating spunbond nonwoven fabrics and meltblown nonwoven fabrics. Of these, spunbond nonwoven fabrics are preferred. Furthermore, in the case of composite nonwoven fabrics containing at least spunbond nonwoven fabrics, it is more preferable that the spunbond nonwoven fabrics account for 50% or more by mass.

The method for manufacturing the nonwoven fabric is not particularly limited, and known manufacturing methods can be used. For example, a preferred method for manufacturing a composite nonwoven fabric made by laminating multiple nonwoven fabrics is to entangle a laminate of multiple nonwoven fabric layers by hydroentangling, using high-pressure water. Nonwoven fabrics obtained by such hydroentangling methods (hydroentangled nonwoven fabrics) easily create a difference between the front and back of the sheet, making it easier to spread. The difference between the front and back of the sheet here refers to the difference in pulp content. For example, the difference between the front and back can be created by having one surface be a nonwoven fabric layer with a high pulp content and the other surface be a nonwoven fabric layer with a low pulp content or no pulp at all. By creating a difference in pulp content between the front and back of the sheets, sticking between the sheets can be more effectively prevented.

(Medicinal solution)

The chemical liquid can be any chemical liquid that can be used for wiping purposes, without any particular limitations. Examples of chemical liquids include those that contain a disinfectant and, as needed, a moisturizer, an emollient, and other additives. For example, the chemical liquid can be used as a liquid in which each component is dissolved or dispersed in water.

Any ingredient that can be used for wiping purposes can be used as a disinfectant, without any particular limitation. Examples of disinfectants include quaternary ammonium salts such as benzalkonium chloride and cetylpyridinium chloride, polyaminopropyl biguanide, parabens (methylparaben (methyl parahydroxybenzoate), ethylparaben (ethyl parahydroxybenzoate), propylparaben (propyl parahydroxybenzoate), isopropylparaben (isopropyl parahydroxybenzoate), butylparaben (butyl parahydroxybenzoate), isobutylparaben (isobutyl parahydroxybenzoate), benzylparaben (benzyl parahydroxybenzoate), etc.), benzoic acid and its derivatives. These include benzoate, chlorocresol, chlorobutanol, salicylic acid and its salts (sodium salicylate, etc.), sorbic acid and its salts (potassium sorbate, etc.), dehydroacetic acid and its salts (sodium dehydroacetate, etc.), trichlorohydroxydiphenyl ether, phenoxyethanol, phenol, sodium lauryldiaminoethylglycine, resorcinol, isopropylmethylphenol, chlorhexidine hydrochloride, orthophenylphenol, chlorhexidine gluconate, and methylisothiazolinone.

The disinfectant may be used alone or in combination with two or more types.

The disinfectant content in the chemical solution can be determined appropriately depending on the chemical solution components, but it is preferably 0.01 to 5.0% by mass of the total amount of the chemical solution.

Humectants can be any ingredient commonly used in this field, without any particular limitations. Examples of humectants include polyhydric alcohols such as glycerin and pentaerythritol; organic acids such as lactic acid and sodium pyrrolidone carboxylate (PCA-Na); urea; and alkylene glycols such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, and diethylene glycol monoethyl ester.

Humectants may be used alone or in combination of two or more types.

The amount of humectant contained in the chemical solution can be determined appropriately depending on the chemical solution components, but it is preferable that it be, for example, 0.0001 to 10.0% by mass of the total amount of the chemical solution.

Further examples of oil-soluble emollients include natural oils and fats, long-chain fatty acids, fatty acid esters, lanolins (lanolin, lanolin alcohol, polyoxyethylene beeswax, etc.), phospholipids, ceramides, and natural moisturizing ingredients (aloe extract, etc.).

Additives that can be used in quasi-drugs, cosmetics, etc. can also be used as other additives. Examples of additives include gelling agents, emulsifiers, thickeners, pH adjusters, sequestering agents, surfactants, stabilizers, discoloration inhibitors, fragrances, and colorants. These additives may be used alone or in combination of two or more.

Among the above, suitable examples of medicinal solutions for use in this embodiment include, for example, quaternary ammonium salts such as benzalkonium chloride and cetylpyridinium chloride; polyaminopropyl biguanide, paraben, phenoxyethanol, etc.

(Physical properties of wet towels)

The total water absorption (TWA) of the wet towel 10 in a dry state is 150 to 350 g/ ^m² . If the TWA is less than 150 g/ ^m² , the wet towel 10 cannot achieve an impregnation ratio sufficient to provide a sufficient wiping effect, and therefore cannot retain sufficient chemical solution. Furthermore, if the TWA is greater than 350 g/ ^m² , the chemical solution does not seep out adequately during wiping, making it impossible to thoroughly wipe away dirt and other impurities, resulting in an insufficient wiping effect. The lower limit of the TWA is preferably 200 g/ ^m² or more, and more preferably 250 g/ ^m² or more. Furthermore, the upper limit of the TWA is preferably 340 g/ ^m² or less, and more preferably 330 g/ ^m² or less. By controlling the TWA within this range, the wiping effect described above can be further improved, and a sufficient wiping effect can be obtained without increasing the impregnation ratio, resulting in excellent economic efficiency.

The TWA of the wet towel 10 can be measured in accordance with the measurement method described in the Examples below.

The ratio (impregnation ratio; g2/g1) of the mass of the wet towel 10 in its dry state (g1) to the mass of the wet towel 10 in its dry state (g2) with which the sheet has been impregnated is 200 to 400%. If the impregnation ratio is less than 200%, the area that can be wiped with one wet towel 10 (wipeable area) will be small, and sufficient wiping effect will not be achieved. If the impregnation ratio is greater than 400%, stickiness will occur. The lower limit of the impregnation ratio is preferably 220% or more, and more preferably 240% or more. The upper limit of the impregnation ratio is preferably 360% or less, and more preferably 330% or less.

The basis weight of the wet towel 10 in a dry state is preferably 30 to 65 g/ ^m2 . The lower limit of the basis weight is more preferably 33 g/ ^m2 or more, and even more preferably 35 g/ ^m2 or more. The upper limit of the basis weight is more preferably 55 g/ ^m2 or less, and even more preferably 45 g/ ^m2 or less. By controlling the lower limit of the basis weight within the above range, it is possible to impart a sheet thickness that prevents the wet towel 10 from tearing during wiping. Furthermore, by controlling the lower limit of the basis weight within the above range, it is possible to impart flexibility to the wet towel 10 that prevents it from becoming too hard and makes it easy to wipe when in use.

The cross direction tensile strength (WCD) of the wet towel 10 is preferably 300 to 800 gf/25 mm. The lower limit of WCD is more preferably 380 gf/25 mm or more, and even more preferably 430 gf/25 mm or more. The upper limit of WCD is more preferably 700 gf/25 mm or less, and even more preferably 600 gf/25 mm or less. By controlling the lower limit of WCD within the above range, tearing of the wet towel 10 during wiping can be effectively prevented. Furthermore, by controlling the upper limit of WCD within the above range, the wet towel 10 does not become too stiff, and is given flexibility that makes wiping easy during use. For example, in the case of a cylindrical wet towel roll body 1 as shown in Figure 1 described below, its height direction is the cross direction (CD).

The expansion ratio (lateral stretch) of the wet towel 10 in the longitudinal direction is preferably 40 to 120%. The lower limit of the lateral stretch is more preferably 45% or more, and even more preferably 50% or more. The upper limit of the lateral stretch is more preferably 110% or less, and even more preferably 100% or less. By controlling the lower limit of the lateral stretch within the above range, the wet towel 10 does not become too stiff, and can be imparted with a flexibility that makes wiping easy during use. By controlling the upper limit of the lateral stretch within the above range, the wet towel 10 does not become too stretched, making wiping easier.

Furthermore, it is preferable that both the WCD and lateral elongation mentioned above are within the above-mentioned ranges. This further improves ease of wiping and tear resistance during use.

The wet towel 10 according to this embodiment can also be suitably used as a so-called thick wet towel. From this perspective, the sheet thickness of the wet towel 10 is preferably 0.30 to 0.50 mm. The lower limit of the sheet thickness is more preferably 0.33 mm or more, and even more preferably 0.35 mm or more. The upper limit of the sheet thickness is more preferably 0.47 mm or less, and even more preferably 0.45 mm or less. Controlling the sheet thickness within the above range makes wiping easier.

The wet towel 10 according to this embodiment can be formed into a substantially rectangular sheet. The length in the longitudinal direction (horizontal direction) is preferably 300 to 700 mm. The lower limit is more preferably 350 mm or more, and even more preferably 400 mm or more. The upper limit is more preferably 650 mm or less, and even more preferably 600 mm or less. Controlling the longitudinal length within the above range makes wiping easier.

The length in the short side direction (vertical direction) is preferably 200 to 400 mm. The lower limit is more preferably 220 mm or more, and even more preferably 250 mm or more. The upper limit is more preferably 350 mm or less, and even more preferably 300 mm or less. Controlling the short side length within the above range makes wiping easier.

(Wet towel roll body)

The wet towel 10 according to this embodiment is in sheet form and can be used as a roll (wet towel roll 1) by at least rolling it up (see arrow F1). The wet towel roll 1 can be suitably used in a stick shape (stick type) or the like. If necessary, the wet towel roll 1 may be made by folding the sheet-like wet towel 10 and then rolling it up. By using such a roll, it can be made compact, and since the contact area with the outside is small, evaporation of the chemical solution can be effectively prevented, and contamination due to contact with the outside can also be effectively prevented.

When producing a wet towel roll body 1 from a sheet-like wet towel 10, it can be obtained, for example, by the method shown in Figure 2.

Figure 2 is a conceptual diagram showing an example of the procedure for folding the wet towel according to this embodiment to obtain the wet towel roll body shown in Figure 1.

First, the raw sheet 100 of the wet towel 10 according to this embodiment is folded in half along the folding line L1, which is the longitudinal center line, so that the end 110 overlaps the other end 120 (see arrow F2), to obtain the folded sheet 200.

Next, the folded sheet 200 is folded so that the end 210 and the other end 220 are in contact with the folding line L2, which is the center line. That is, the end 210 is folded along the folding line L3 (see arrow F3), and the other end 220 is folded along the folding line L4 (see arrow F4), thereby folding the sheet in a gate-fold pattern to obtain the folded sheet 300.

Then, one end 310 of the folded sheet 300 is rolled up (see arrow F1) so that the folded end 330 (i.e., the tangent line between end 210 and the other end 220; see L2) faces inward, thereby obtaining the wet towel roll body 1.

The dimensions and shape of the wet towel roll body 1 are not particularly limited, but a cylindrical shape is preferable. This shape makes it even easier to spread the sheets.

(Wet towel packaging)

Figure 3 is a perspective view of an example of a wet towel package according to this embodiment.

According to this embodiment, a wet towel package 2 can be produced, which includes the above-described wet towel roll 1 and a film packaging bag 3 that contains the wet towel roll 1.

For example, a stick-shaped wet towel roll 1 may be individually packaged in a packaging bag 3. This type of individual packaging allows the wet towel roll 1 to be opened immediately before use and used immediately thereafter, preventing the liquid chemicals from evaporating. This makes it particularly suitable for disposable wet towel rolls 1.

The packaging form of the packaging bag 3 is not particularly limited and can be determined appropriately taking into account the shape and type of the wet towel roll 1. Examples of packaging forms include pillow packaging (vertical pillow packaging, horizontal pillow packaging, stick pillow packaging, flat bag pillow packaging, etc.), gusset packaging, two-sided seal packaging, and tube roll packaging. Of these, pillow packaging is preferred.

The packaging bag 3 is a pillow packaging bag in which the front surface 30, back surface 31, and side surfaces 32 are sealed at both ends 33. Pillow packaging is a pillow-like packaging form in which a single sheet of film is sealed back to back to form a tube, and the ends are sealed and cut to a specified length. Pillow packaging is a packaging form that can accommodate a wide range of dimensions and shapes of wet towel roll bodies 1, and because it allows the wet towel roll body 1 to be sealed and packaged, it is also preferable from the perspective of preventing evaporation of the chemical solution.

The film that is the material of the packaging bag 3 is preferably a resin film, for example. The film material may be any material that is liquid-impermeable.

The film may be, for example, a laminated film containing a substrate film with barrier properties and a sealing film with sealing properties. Examples of substrate films with barrier properties include polyethylene terephthalate (PET) film, biaxially oriented polypropylene (OPP) film, aluminum vapor deposition film, and transparent vapor deposition film. Examples of sealing films include linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), and unoriented polypropylene (CPP).

Furthermore, from the standpoint of scratch resistance and aesthetic appeal, it may be a laminated film with a coating film (PET film, OPP film, etc.) further laminated on the outermost layer.

The dimensions and shape of the packaging bag 3 are not particularly limited, but stick pillow packaging is preferable. This shape and size further improves the ability to prevent the liquid medicine from volatilizing.

As explained above, the wet towel 10, wet towel roll 1, and wet towel package 2 according to this embodiment contain a sufficient amount of chemical solution to provide a sufficient wiping effect, yet offer at least the following advantages: they are gentle on the skin, can wipe a large area with a single sheet, are non-sticky, and are easy to spread out when in use.

The present invention will be explained in more detail with reference to the following examples and comparative examples, but the present invention is not limited to these examples in any way.

<Physical property measurement methods>

- Basis Weight of Sheet in Dry State The basis weight of the sheet in a dry state of the wet towel 10 was measured in accordance with JIS L 1913: 2010. The mass per unit area was measured by leaving the sheet in a dryer at 60°C until the mass became constant and completely drying it, and then measuring the mass per unit area in accordance with JIS P8111: 1998, and after conditioning the mass, measuring the mass in accordance with JIS L 1913: 2010.

Pulp content of wet towel 10 (pulp ratio)
A sample was prepared by cutting a sheet of wet towel 10 into a 1 cm x 1 cm square. The mass of this sample was measured and used as the mass of the sheet. The sample was then immersed in 700 mL of acetate buffer (pH 4-4.5), and a cellulose-degrading enzyme (product name "Cellulase Onozuka 3S", manufactured by Yakult Pharmaceutical Co., Ltd.) was added to a concentration of 1% by mass. The sample was then immersed at 40°C and 166 rpm for 12 hours. The sample was then removed, washed with water, and dried. The mass of the sample after this treatment was measured, and the pulp content was calculated using the following formula.

Pulp content = mass of sample after treatment (g) / mass of sample before treatment (g) × 100

Measurement of lateral tensile strength (WCD) and lateral elongation of wet towel 10 The WCD and lateral elongation of the wet towel 10 were measured in accordance with JIS L 1913:2010. Note that "lateral" here refers to the height direction of the cylindrical shape of the wet towel 10, and when the wet towel 10 is cylindrical as shown in FIG. 1 , the WCD and lateral elongation are measured after the roll 1 is unwound and unfolded into a rectangular sheet.

- Water absorption of the sheet in a dry state (TWA)
The wet towel 10 was cut into a 7.5 cm x 7.5 cm square to prepare a sample. The sample was then left to stand in a 60°C dryer until its mass became constant, yielding a completely dried sample. The mass of the completely dried sample was measured (mass after drying). Next, the sample was immersed in distilled water for 2 minutes, and then hung in a container saturated with water vapor (RH 100%) so that one corner of the sample was the top, and the top and the two adjacent corners were supported and stretched, and the sample was left for 30 minutes, after which the mass was measured after draining. The measured value was then converted into the water retention capacity (g/ ^m2 ) per 1 ^m2 of sample.

A sample was prepared by cutting a sheet of the wet towel 10 into a size of 1 cm x 1 cm. The mass of this sample was measured (mass before drying).
Subsequently, the sample was left to stand in a dryer at 60°C until the mass of the sample became constant, and a completely dried sample was obtained. The mass of the completely dried sample was measured (mass after drying).
Then, the ratio of the mass of the dry sheet to the mass of the dry sheet with the chemical solution impregnated therein (impregnation ratio) was calculated based on the following formula.

Impregnation ratio (%) = (mass before bone dry g - mass after bone dry g) / mass after bone dry g x 100

<Evaluation Method>

- Wetness retention: In an indoor environment, a monitor used the sheet to wipe the entire body of a care recipient, excluding the genitals. After wiping, the sheet was squeezed out by hand to evaluate whether it remained moist until the end.

- Ease of removing dirt: In an indoor environment, a monitor used the sheet to wipe the genitals of a care recipient, and the degree to which dirt such as excrement and sebum was removed was evaluated. The shorter the wiping time, the easier it was to remove dirt.

- Skin irritation: The irritation to the skin when the monitor wiped their body was evaluated.

- Ease of wiping off The monitors evaluated the ease of wiping off when wiping their bodies.

・One sheet is enough to wipe (wipeable area)
In an indoor environment, the monitor used a sheet to wipe the entire body of the care recipient except for the genitals, and then wiped the genitals. We evaluated whether the entire task could be completed with one sheet.

- Stickiness The monitors evaluated the discomfort caused by stickiness when wiping their bodies.

- Ease of unfolding the sheet The monitor evaluated the ease of unfolding the stick-shaped sheet. The shorter the time from opening the film packaging to starting the wiping task, the easier it was to unfold the sheet.

For each of the above evaluation items, out of 30 monitors,
If 30 to 25 people judged it to be good, it was rated as "◎".
If 24 to 16 people judged it to be good, it was rated as "Good."
If 10 to 15 people judged it to be good, it was rated as "△".
If 9 to 5 people judged it to be good, it was rated as "X".
If 4 to 0 people judged it to be good, it was rated as "XX".

<Example 1>

(Production of wet towels 10 and wet towel rolls 1)

First, the components were mixed in a chemical tank and stirred uniformly to prepare a chemical solution. The chemical solution was then sprayed from an impregnation nozzle to uniformly impregnate the wet towels 10. The resulting wet towels 10 were then cut to prepare raw sheets 100 (see Figure 2) measuring 600 mm in width and 300 mm in length. This raw sheet 100 was folded and rolled according to the procedure shown in Figure 2 to produce a wet towel roll 1.

(Preparation of wet towel package 2)

The above-described wet towel roll 1 was individually packaged (one roll at a time) using a transparent vapor-deposited PET/LLDPE film to obtain a pillow-packaged (vertical) wet towel package 2. This packaging bag 3 was a stick pillow package, and the resulting wet towel package 2 was in the form of a roll.

<Examples 2-6, Comparative Examples 1-3>

Wet towels, wet towel rolls, and wet towel packages were produced using the same method as in Example 1, except for the changes in conditions shown in Table 1.

Table 1 shows the conditions and evaluation results for each example and comparative example.

From the above, it has been confirmed that the wet towels, wet towel rolls, and wet towel packages according to this example have a high wiping effect, there is no reduction in wiping effect due to evaporation of the chemical solution, there is no sticking between sheets, and there is no stickiness during use.

1: Wet towel roll 2: Wet towel package 3: Packaging bag 10: Wet towel 30: Surface 31: Back 32: Side 33: End 100: Raw sheet 200, 300: Folded sheet 110, 120, 210, 220, 310: End 330: Folded end L1, L2, L3, L4: Folding lines F1, F2, F3, F4: Arrows

Claims (5)

A wet towel in which a sheet containing nonwoven fabric is impregnated with a medicinal solution,
The nonwoven fabric contains 66 to 75% by mass of pulp,
the sheet has a difference in the pulp content between its front and back sides, one surface being a nonwoven fabric layer surface having a high pulp content and the other surface being a nonwoven fabric layer surface not containing pulp;
The water absorption (TWA) of the sheet in a dry state is 150 to 350 g/ ^m2 ;
The ratio (impregnation ratio) of the mass of the chemical solution impregnated into the sheet in a dry state to the mass of the sheet in a dry state is 200 to 400%.
Wet towels (excluding those containing powder in the chemical solution). 2. The wet towel according to claim 1 , wherein the impregnation ratio is 200 to 300%. The wet towel has a cross-sectional (CD) tensile strength (WCD) of 300 to 800 gf/25 mm;
The expansion ratio (transverse expansion) of the wet towel in the longitudinal (CD) direction is 40 to 120%.
The wet towel according to claim 1 or 2 . The wet towel according to any one of claims 1 to 3 is in a sheet form, and the wet towel is at least wound into a roll.
Wet towel roll body. The wet towel roll body according to claim 4 ,
a film packaging bag for storing the wet towel roll;
A wet towel package comprising: