JP2022011166A - Wet tissue paper product - Google Patents

Abstract

To provide a wet tissue paper product which is manufactured by a multistand type inter-folder, is easily taken out, and is suited to wipe-cleaning.SOLUTION: A wet tissue paper product 1 includes: a layered bundle layering sheets including non-woven fabric as a sheet base material by a multistand inter-folder method; medical solution impregnated with the layered bundle; and a container body 2 which houses the layered bundle impregnated with the medical solution. The non-woven fabric is pulp content compound type non-woven fabric whose pulp fiber content is between 40 weight% and 85 weight%, and the sheets in a wet state have extension in a CD direction between 40% and 120% and WCD between 300 gf/25 mm and 800 gf/25 mm.SELECTED DRAWING: Figure 1

Description

The present invention relates to wet tissue products.

Various wet tissue products are commercially available for interpersonal and objective use. Among them, a wet tissue shoe product in which wet tissue sheets are laminated one by one and the laminated bundle is wrapped with a film is known. The manufacturing method of this wet tissue shoe product includes a rotary interfolder method in which wide raw fabrics supplied from two raw fabric rolls are folded into each other and the obtained laminated bundle is cut to a desired size by a band saw. The raw fabric (sheet base material) supplied from the original fabric roll is folded in the flow direction, and the obtained laminated bundle is cut into a desired size, which is classified into a multi-stand type interfolder method.

The multi-stand type interfolder is a method that has a high production speed and is suitable for mass production, but the wet tissue product obtained by this method is to pull the CD direction of the sheet when taking it out of the container. Therefore, there is a problem that the sheets are stretched and the sheets are not correctly separated one by one due to the surface tension when the sheets are laminated, and the sheets come out continuously.

Also, in recent years, due to the shortening of housework and heightened awareness of hygiene, the number of cases where wet tissue shoes are used instead of cloth towels is increasing, and a sheet suitable for cleaning is desired compared to conventional hand towels. ing. However, with the conventional rayon spunlace-based non-woven fabric, it is difficult to wipe it off because it stretches laterally. On the other hand, a high-strength spunbonded non-woven fabric has little lateral elongation when wiped, but has a small amount of chemical solution and is not suitable for wet wipes.

Patent Document 1 includes 100 parts by mass of a non-woven fabric containing 30% by mass or more of pulp fibers and 200 to 500 parts by mass of a chemical solution impregnated in the non-woven fabric, and has a contact heating / cooling sensation of 0.60 W /. Wet tissues that are cm ² or larger are disclosed. In Patent Document 1, a non-woven fabric containing 30% by mass or more of pulp fibers is used as a sheet base material for wet tissue. However, in the non-woven fabric, for example, 40% by mass of pulp fiber, 40% by mass of rayon, and 20% by mass of bicon fiber are integrally formed into a fiber web by a card machine, and the obtained fiber web is sprayed with a high-speed water flow to form the fiber. It's just an entanglement of fibers in the web.

JP-A-2005-287710 (Claim 1, paragraph 0030, paragraph 0032)

Even if the non-woven fabric described in Patent Document 1 is commercialized by the multi-stand interfolder method, the sheets of the wet tissue are stretched and the sheets are correctly separated one by one due to the surface tension when the sheets are laminated. The problem of not being able to come out continuously is not fully solved.

An object of the present invention is to provide a wet tissue product which is commercialized as a multi-stand type interfolder and is easy to take out and suitable for cleaning.

As a result of diligent research to solve the above problems, the present inventors have used a predetermined pulp-containing composite non-woven fabric as a sheet base material for wet tissue, and have a predetermined range of the predetermined characteristics of the pulp-containing composite non-woven fabric. It has been found that a desired wet tissue product can be obtained by adjusting to, and the present invention has been completed. That is, the present invention relates to the following wet tissue products.

(1) A laminated bundle in which a sheet containing a non-woven fabric as a sheet base material is laminated by a multi-stand type interfolder method, a chemical solution impregnated in the laminated bundle, and the laminated bundle impregnated with the chemical solution are stored inside. A wet tissue product with a container body and
The nonwoven fabric is a pulp-containing composite nonwoven fabric having a pulp fiber content of 40% by weight or more and 85% by weight or less.
The sheet impregnated with the chemical solution is a wet tissue product having an elongation of 40% or more and 120% or less in the CD direction and a WCD of 300 gf / 25 mm or more and 800 gf / 25 mm or less.
(2) The wet tissue product according to (1) above, wherein the pulp-containing composite nonwoven fabric includes a nonwoven fabric body and a pulp fiber layer integrated on at least one surface of the nonwoven fabric body.
(3) The wet tissue product according to (2) above, wherein the air permeability of the nonwoven fabric body is 250 cm ³ / cm ² / sec or more and 750 cm ³ / cm ² / sec or less.
(4) The wet tissue product according to any one of (1) to (3) above, wherein the ratio of the chemical solution to the sheet in an absolutely dry state not impregnated with the chemical solution is 150% by weight or more and 320% by weight or less.
(5) The wet tissue product according to any one of (1) to (4) above, wherein the sheet in an absolutely dry state not impregnated with the chemical solution has a basis weight of 25 g / m ² or more and 70 g / m ² or less.
(6) The wet tissue product according to any one of (1) to (5) above, wherein the ratio of the length of the take-out port to the length of the sheet is 10% or more and 40% or less.
(7) The wet tissue product according to any one of (1) to (6) above, wherein the density of the laminated bundle impregnated with the chemical solution is 0.2 g / cm ³ or more and 0.7 g / cm ³ or less.

According to the present invention, a wet tissue product which is commercialized by a multi-stand type interfolder method and is easy to take out and suitable for cleaning is provided.

It is a perspective view which shows typically the appearance of one Embodiment of the wet tissue product which concerns on this invention. It is sectional drawing which shows typically one Embodiment of the laminated bundle of the sheet of the wet tissue by the multi-stand type interfolder method.

FIG. 1 shows the appearance configuration of the wet tissue product 1 according to the present embodiment. The wet tissue product 1 of the present embodiment has a laminated bundle (FIG. 2) in which a sheet (not shown) containing a non-woven fabric as a sheet base material (tissue original fabric) is laminated by a multi-stand interfolder method, and the laminated bundle. A container body 2 having a chemical solution to be impregnated (not shown) and a take-out port 3 for accommodating a laminated bundle impregnated with the chemical solution, and a flap attached to the take-out port 3 of the container body 2 so as to be openable and closable. 4 and. In the wet tissue product 1 of the present embodiment, by pulling the sheet of the wet tissue (hereinafter, also simply referred to as “sheet”) in the CD direction of the sheet, the sheet is released from the gap 3A provided in the resin film of the take-out port 3. Taken out one by one. The take-out port 3 is not limited to this embodiment, and a resin film may not be provided.

FIG. 2 shows an embodiment of a laminated bundle laminated by the multi-stand type interfolder method as a laminated bundle of a plurality of sheets 20. In each sheet 20, the pulp fiber layer 30 side faces outward, the nonwoven fabric body layer 31 faces inward, one end 20a is folded back toward the center of the sheet 20 in the upward direction of the sheet 20, and the other The end portion 20b is folded back to the vicinity of the center portion of the sheet 20 in the downward direction of the sheet 20 and folded in the form of Z-folding, and a plurality of sheets 20 are vertically laminated in the same posture. There is a difference between the front and back of the sheet 20. The form of the laminated bundle is not limited to this embodiment, and other laminated bundles that can be laminated by the multi-stand type interfolder method may be used.

In the present embodiment, since the plurality of sheets are configured as a laminated bundle (clip) laminated by the multi-stand type interfolder method, it is easy to pull out one sheet at a time in the CD direction (width direction) of the sheets. .. The laminated bundle is impregnated with the chemical solution and then stored inside the container body 2. The user picks the end of the sheet located at the top of the laminated bundle with a finger from the gap 3A of the resin film attached to the inside of the take-out port 3, and pulls the sheet in the CD direction to pull the sheet into a container. Take it out of the main body 2. A part of the next sheet is lifted by the pulling force applied when the sheet is taken out, and it becomes easy to pick it up with a finger.

In the present embodiment, the length of the take-out port 3 and the length of the gap 3A of the resin film attached to the inside of the take-out port 3 are configured to match, but the present invention is not limited to this, and the gap 3A is not limited to this. The length may be smaller than the length of the take-out port 3. In this form, the length of the take-out port 3 described later is read as the length of the gap 3A. The resin film may not be used.

The container body 2 is a pillow package having an outlet 3. In pillow packaging, for example, a piece of film having an outlet provided in a substantially central portion is prepared, and both ends in one direction of the film are arranged on the back side so that the outlet is located on the front side surface. After bonding, both ends of the film in the other direction are bonded and packaged in a pillow-shaped container. The material of the film constituting the container main body 2 is not particularly limited and may be liquid impermeable. For example, a laminate of a film having a barrier property and a film having a sealing property can be mentioned. Examples of the film having a barrier property include an aluminum-deposited film and a transparent vapor-deposited film. Examples of the film having a sealing property include a film made of a resin material such as linear low density polyethylene (LLDPE), low density polyethylene (LDPE), and unstretched polypropylene (CPP). For the purpose of improving scratch resistance and cosmeticity, a film of a resin material such as polyethylene terephthalate (PET) or biaxially stretched polypropylene (OPP) may be laminated on the outermost layer. For example, OPP or PET can be used for the flap 4, and an adhesive layer is provided on the inner surface in contact with the take-out port 3 so that the flap 4 can be opened repeatedly. The container body 2 is not limited to this embodiment, and a conventionally known pillow package can be used without particular limitation.

The sheet of the present embodiment contains a pulp-containing composite non-woven fabric as a sheet base material. The pulp-containing composite nonwoven fabric is one in which a pulp fiber layer is integrated on at least one surface of a nonwoven fabric body, as disclosed in US Pat. No. 5,284,703, for example. As an example, on one surface of the nonwoven fabric body, the fibers constituting the nonwoven fabric body and the pulp fibers are entangled to integrate the pulp fiber layer, and a part of the pulp fibers penetrates the nonwoven fabric body in the thickness direction. It is exposed on the other surface, and the non-woven fabric body and the pulp fiber layer are extremely strongly bonded and integrated. Here, "integration" means that the non-woven fabric main body and the pulp fiber layer do not peel off to the extent that the function of the pulp-containing composite non-woven fabric is deteriorated during the use of the wet tissue shoe product 1. The pulp-containing composite nonwoven fabric described above can be produced, for example, by pouring high-pressure water into a laminate of a nonwoven fabric body and pulp fibers by a water flow confounding method. At this time, pulp fibers may be laminated on the surface of the non-woven fabric main body and entangled by water flow confounding so that the front and back differences appear. Here, the front-to-back difference is, for example, a difference in the amount of pulp fibers. In the present embodiment, although there are pulp fibers penetrating the main body of the non-woven fabric, the other side is the non-woven fabric surface as a whole. It is a pulp fiber layer surface made of pulp fiber. If there is such a difference between the front and back sides, the sheet can be easily taken out easily.

As the nonwoven fabric body in the pulp-containing composite nonwoven fabric, a general nonwoven fabric can be used, but spunbonded nonwoven fabrics, composite nonwoven fabrics in which a spunbonded nonwoven fabric and a meltblown nonwoven fabric are laminated, and the like can be mentioned. In one embodiment of the composite nonwoven fabric, the spunbonded nonwoven fabric is contained in an amount of 50% by weight or more. Examples of the material of the fiber constituting the non-woven fabric main body include polyolefin, polyester, polylactic acid and the like, and among these, polyolefin is preferable. More specifically, it is preferably a non-woven fabric main body containing polypropylene fibers, and more preferably a non-woven fabric main body made of polypropylene fibers. The pulp fiber is not particularly limited, and examples thereof include coniferous bleached kraft pulp (hereinafter, also referred to as “NBKP”) such as radiata pine, slush pine, southern pine, lodge pole pine, spruce, and Douglas-firs. NBKP can be used alone or in combination of two or more. The basis weight of the non-woven fabric body is, for example, 7 g / m ² or more and 25 g / m ² or less, and the basis weight of the pulp fiber layer is, for example, 15 g / m ² or more and 50 g / m ² or less. The basis weight is, for example, in the range of 25 g / m ² or more and 70 g / m ² or less.

In the pulp-containing composite nonwoven fabric, the pulp fiber content (hereinafter, also referred to as "pulp ratio") is, for example, in the range of 40% by weight or more and 90% by weight or less, in the range of 45% by weight or more and 85% by weight or less, or 50% by weight. The range is 80% by weight or less, and in each range, the balance is the non-woven fabric main body. If the pulp fiber content is less than 40% by weight, the paper dust tends to fall off when wiped, making it unsuitable for wiping. When the pulp fiber content is larger than 90% by weight, the sheets tend to stick to each other and the take-out property tends to be poor. The content of pulp fibers in the pulp-containing composite nonwoven fabric is determined by the method described later.

In the present embodiment, each configuration of the pulp-containing composite nonwoven fabric, for example, the type and content of the pulp fiber, the fiber diameter and fiber length, the basis weight (grain) of the pulp fiber layer, the type and content of the nonwoven fabric body, and the nonwoven fabric body. By appropriately selecting the basis weight (grain), the material and composition ratio of the fibers constituting the non-woven fabric body, etc., a person skilled in the art can obtain a plurality of physical properties of a wet tissue sheet containing a pulp-containing composite non-woven fabric as a sheet base material. It can be easily adjusted to a predetermined range in one experiment. For example, in a pulp-containing composite nonwoven fabric, for example, by appropriately selecting the texture amount of the nonwoven fabric body, the pulp fiber content, and the like, the physical properties specified in the present embodiment (particularly the elongation in the CD direction and the WCD in the WET state) ) Is obtained. For example, by setting the basis weight of the non-woven fabric body to a range of 7 g / m ² or more to 25 g / m ² or less, a range of 9 g / m ² or more and 20 g / m ² or less, or a range of 11 g / m ² or more and 15 g / m ² or less. , Predetermined physical properties can be easily obtained.

(Elongation in the CD direction and WCD in the state of being impregnated with the chemical solution)
The sheet of the present embodiment using a pulp-containing composite nonwoven fabric as a sheet base material has a stretch in the CD direction (hereinafter also referred to as “CD direction stretch”) in a state of being impregnated with a chemical solution (hereinafter, also referred to as “WET state”). It is in the range of 40% or more and 120% or less, in the range of 45% or more and 90% or less, or in the range of 50% or more and 80% or less, and WCD (lateral strength) is the tensile strength in the CD direction in the WET state. The WCD is in the range of 300 gf / 25 mm or more and 800 gf / 25 mm or less, or in the range of 380 gf / 25 mm or more and 700 gf / 25 mm or less, or 430 gf / 25 mm or more and 600 gf / 25 mm or less. The amount of the chemical solution impregnated here is in the range of 150% by weight or more and 320% by weight or less with respect to 100% by weight of the sheet in the absolutely dry state in which the chemical solution is not impregnated. CD direction elongation and WCD are measured according to JIS L 1913: 2010.

If the elongation in the CD direction is less than 40%, the sheet tends to be hard and difficult to wipe off, and if it is larger than 120%, the sheet tends to be elongated and difficult to remove. Further, if the WCD is smaller than 300 gf / 25 mm, it tends to be easily torn during cleaning and difficult to wipe, and if it is larger than 800 gf / 25 mm, the sheet tends to be hard and difficult to wipe.

(Draftness)
The sheet of the present embodiment has an air permeability of, for example, 250 cm ³ / cm ² / sec or more and 750 cm ³ / cm ² / sec or less, 300 cm ³ / cm ² / sec or more and 650 cm ³ / cm ² / sec or less, or The range is 350 cm ³ / cm ² / sec or more and 600 cm ³ / cm ² / sec or less. If the air permeability is less than 250 cm ³ / cm ² / sec, the pulp fibers tend to fall off easily when wiping, which tends to be unsuitable for wiping. When the air permeability is larger than 750 cm ³ / cm ² / sec, the strength tends to be weakened. The air permeability of the present embodiment is a value measured in accordance with the JIS L 1913: 2010 Frazier method only for the non-woven fabric main body in which the sheet is treated by the method described later to dissolve and remove the pulp fibers.

(Ratio of chemical solution to sheet in an absolutely dry state without chemical solution impregnation)
The ratio of the chemical solution for making a wet wipe to the sheet in the absolutely dry state (hereinafter, also referred to as “dry state”) not impregnated with the chemical solution is, for example, 150% by weight or more and 320% by weight with respect to 100% by weight of the sheet. % Or less, 180% by weight or more and 300% by weight or less, or 210% by weight or more and 280% by weight or less. If the ratio of the chemical solution is less than 150% by weight, the stains are difficult to remove at the time of cleaning, and it tends to be unsuitable for wiping. If the ratio of the chemical solution is larger than 320% by weight, the sheets tend to stick to each other when they are laminated, and it tends to be difficult to take them out one by one. In the present specification, the dry state is a state in which the sheet is dried in a dryer (constant temperature machine) at 60 ° C. until the mass of the sheet becomes constant.

(Chemical solution)
As the chemical solution impregnated in the sheet of the present embodiment, a chemical solution commonly used in this field can be used without particular limitation. Examples thereof include chemicals that may contain various commonly used components. One embodiment of the chemical solution includes, for example, a form in which each component is dissolved or dispersed in water.

As the disinfectant, components commonly used in this field can be used without particular limitation, for example, quaternary ammonium salts such as benzalconium chloride and cetylpyridinium chloride, polyaminopropylbiguanide, paraben, benzoic acid and salts thereof. , Chlorhexidine, chlorobutanol, salicylic acid and its salts, solhibinic acid and its salts, dehydroacetic acid and its salts, trichlorohydroxydiphenyl ether, paraoxybenzoic acid ester and its sodium salt, phenoxyethanol, phenol, laurylzianoethylglycine sodium, resorcin, Examples thereof include isopropylmethiphenol, cetylpyridinium chloride, benzalkonium chloride, chlorhexidine hydrochloride, orthophenylphenol, and chlorhexidine gluconate. The disinfectant can be used alone or in combination of two or more. The content of the disinfectant in the chemical solution is appropriately selected depending on the type of the disinfectant, and is, for example, in the range of 0.1% by weight or more and 5.0% by weight or less of the total amount of the disinfectant.

As the moisturizing agent, components commonly used in this field can be used without particular limitation, for example, polyhydric alcohols such as glycerin and pentaerythritol, organic acids such as lactic acid and sodium pyrrolidone carboxylate, urea, ethylene glycol, diethylene glycol and propylene. Alkylene glycols such as glycol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, diethylene glycol monoethyl ester, and natural fats and oils, long-chain fatty acids, fatty acid esters, lanolin, which act as emollients for oil-soluble components. Examples thereof include lanolins such as lanolin alcohol and polyoxyethylene glycol, phospholipids and ceramides, and natural moisturizing components such as aloe extract. The moisturizer may be used alone or in combination of two or more. The content of the moisturizer in the chemical solution is appropriately selected depending on the type of the disinfectant or the moisturizer, and is, for example, in the range of 0.0001% by mass or more and 10.0% by mass or less of the total amount of the chemical solution.

In addition, various components (hereinafter also referred to as "additive components") generally used in quasi-drugs and cosmetics include, for example, alcohols such as ethanol and isopropanol, gelling agents, emulsifiers, thickeners, and pH adjustments. Examples thereof include agents, metal sequestering agents, surfactants, stabilizers, discoloration inhibitors, fragrances, colorants and the like. As the additive component, one kind may be used alone or two or more kinds may be used in combination.

(Metsuke in dry state)
The basis weight (mass per unit area) of the sheet in the dry state is, for example, 25 g / m ² or more and 70 g / m ² or less, 30 g / m ² or more and 65 g / m ² or less, or 35 g / m ² or more. The range is 55 g / m ² or less. If the basis weight of the sheet in the dry state is smaller than 25 g / m ² , the sheet tends to be thin and unsuitable for cleaning. If the basis weight of the sheet in the dry state is larger than 70 g / m ² , the sheet tends to be hard and difficult to wipe. Here, the dry state is as described above. The basis weight of the sheet is measured according to JIS L 1913: 2010.

(Ratio of the length of the outlet to the length of the sheet)
The ratio of the length of the take-out port 3 (or the length of the gap 3A of the resin film attached to the inside of the take-out port 3) to the length of the sheet (sheet length / length of the take-out port, hereinafter "length ratio" ”), For example, in the range of 10% or more and 40% or less, in the range of 14% or more and 35% or less, or in the range of 18% or more and 30% or less, and the length ratio is smaller than 10%, the sheet. It tends to be difficult to take out, and if it is larger than 40%, the resistance between the sheet and the take-out port becomes small, and the sheets tend to come out connected. Here, the length of the sheet is a length in a direction orthogonal to the sheet taking-out direction (CD direction), and is, for example, in the range of 120 mm or more and 300 mm or less. The length of the sheet in the taking-out direction (CD direction) is, for example, in the range of 150 mm or more and 250 mm or less. When the length in the direction orthogonal to the taking-out direction of the sheet and the length in the taking-out direction are within the above-mentioned ranges, the wiping property and the taking-out property tend to be good.

(Density of chemical-impregnated laminated bundle)
The density of the laminated bundle (clip) impregnated with the chemical solution (hereinafter, also referred to as “clip density”) is, for example, in the range of 0.2 g / cm ³ or more and 0.7 g / cm ³ or less. Within this range, the sheet can be taken out easily. If the clip density is smaller than 0.2 g / cm ³ , the laminated state of the clips in the container body 2 is disturbed and it tends to be difficult to take out the sheet. If the clip density is larger than 0.7 g / cm ³ , the sheet tends to be difficult to take out. It tends to come out in a connected manner. The clip density is expressed by the following formula.
Clip density = (clip weight after impregnation with chemical solution / clip volume) x 100
The amount of the chemical solution impregnated is within the range of the ratio of the chemical solution to the sheet in the dry state described above. The volume of the clip is determined by measuring length x width x height using a JIS-compliant metal scale. again,
The number of stacked sheets in one clip is, for example, in the range of 30 or more and 70 or less. When the number of laminated sheets is in this range, the density of clips tends to fall within the above range.

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments, and various modifications or modifications to the above embodiments are made. It will be apparent to those skilled in the art that improvements can be made. It is also clear from the description of the claims that the form with such changes or improvements may be included in the technical scope of the present invention.

Hereinafter, the present embodiment will be further described with reference to Examples and Comparative Examples.
(Examples 1 to 6 and Comparative Examples 1 to 4)
A spunbonded non-woven fabric (basis weight 12 g / m ² , polypropylene) is used as the non-woven fabric body, and the water flow pressure in the water flow entanglement treatment is changed to obtain the wet tissue paper raw fabric (so-called wet tissue sheet) having each characteristic shown in Table 1. Pulp-containing composite non-woven fabric) was manufactured, and the obtained wet tissue paper raw fabric was laminated by a multi-stand interfolder method in a predetermined number of sets and cut to a predetermined size to prepare a laminated bundle, and the obtained laminate was obtained. The bundle is impregnated with the chemical solution at the ratio shown in Table 1, and the chemical solution-impregnated laminated bundle is pillow-wrapped so that the drawing direction of the wet tissue sheet is in the CD direction, and each of Examples 1 to 6 and Comparative Examples 1 to 4 is used. A wet tissue product was produced.

Each characteristic shown in Table 1 was measured as follows.
(Metsuke (unit area mass), CD direction elongation and WCD (tensile strength) in WET state)
Measured according to JIS L 1913: 2010. The unit area mass was measured in accordance with JIS L 1913: 2010 after being completely dried in a dryer at 60 ° C. and then adjusting the humidity according to JIS P8111: 1998.
(Pulp ratio)
The sheet (pulp-containing composite non-woven fabric) was cut into 1 cm squares to obtain test pieces. After measuring the weight of the test piece, the test piece was immersed in about 700 mL of acetate buffer (pH 4-4.5), and cellulolytic enzyme (cellulase Onozuka 3S) was added so as to be 1% by weight at 40 ° C. It was left at 166 rpm for about half a day to a day. Then, the test piece (the non-woven fabric main body from which the pulp fiber was decomposed and removed) was taken out from the enzyme solution, washed with water, dried, and the weight of the non-woven fabric main body was measured, and the pulp ratio was obtained from the following formula.
Pulp ratio (%) = (weight of non-woven fabric body in test piece / weight of test piece) x 100
(Breathability of non-woven fabric body)
The air permeability of the nonwoven fabric body obtained by performing the same enzyme treatment as that used in the method for determining the pulp ratio was measured according to the JIS L 1913: 2010 Frazier method.
(Ratio of chemical solution to dry sheet)
The weight of the sheet impregnated with the chemical solution was measured and used as the weight before absolute drying (g). This sheet was placed in a dryer at 60 ° C. until the weight became constant, dried, and then the weight was measured, and the weight was taken as the weight (g) after absolute drying. Using the weight before absolute drying (g) and the weight after absolute drying (g), the ratio (%) of the chemical solution was determined according to the following formula.
Ratio of chemical solution to dry sheet (%) = [(Weight before absolute drying-Weight after absolute drying) / Weight after absolute drying] x 100

Each of the wet tissue products of Examples 1 to 6 and Comparative Examples 1 to 4 was subjected to the following sensory evaluation by monitoring by 30 people. The results are shown in Table 1.
(Sheet take-out property)
We evaluated the ease of removal when the monitor removed all the sheets.
(Fiber dropout)
The dropout of pulp fiber was mainly evaluated. After rubbing the sheet on the plate of SUS430 30 times back and forth, the amount of fibers adhering to the SUS plate was visually evaluated.
(Easy to wipe)
We evaluated the ease of wiping when the monitor was wiped with a sheet.
(Easy to remove dirt)
When the monitor wiped off the dirt with a sheet, the degree of dirt removal was evaluated.
(Softness of the sheet)
When the monitor wiped the uneven surface of the object to be dealt with with a sheet, it was evaluated whether the monitor was following the object to be dealt with.
(Difficulty in tearing the sheet)
We evaluated the resistance to tearing when the monitor handled the sheet.

The above evaluation tests were evaluated according to the following criteria.
Of the 30 monitors,
30 to 25 people are good ... ◎
24 to 16 people are good ... 〇 15 to 10 people are good ... △
9-5 people are good ... ×
4 to 0 people are good ... XX

From Table 1, in particular, by setting the basis weight of the sheet in the range of 40 to 65 g / m ² and the pulp ratio in the range of 65 to 90%, the CD direction elongation is in a relatively low range of 45 to 90%, and WCD. Can be set in a relatively high range of 400 to 800 gf / 25 mm, and it can be seen that a sheet and a wet tissue product in which good results can be obtained very easily in each sensory evaluation can be obtained. It can also be seen that even if the basis weight of the sheet is in the range of 30 to 35 g / m ² , a relatively good sheet and wet tissue product can be obtained by setting the pulp ratio in the range of 35% or more and less than 65%. ..

1 Wet tissue shoe product 2 Container body 3 Outlet 3A Resin film gap 4 Flap 20 Sheet 20a One end of sheet 20b The other end of sheet 30 Pulp-containing non-woven fabric layer 31 Non-woven fabric body layer

Claims (7)

A laminated bundle in which a sheet containing a non-woven fabric as a sheet base material is laminated by a multi-stand type interfolder method, a chemical solution impregnated in the laminated bundle, and a container body for accommodating the laminated bundle impregnated with the chemical solution. A wet tissue product with,
The nonwoven fabric is a pulp-containing composite nonwoven fabric having a pulp fiber content of 40% by weight or more and 85% by weight or less.
The sheet impregnated with the chemical solution is a wet tissue product having an elongation of 40% or more and 120% or less in the CD direction and a WCD of 300 gf / 25 mm or more and 800 gf / 25 mm or less. The wet tissue product according to claim 1, wherein the pulp-containing composite nonwoven fabric comprises a nonwoven fabric body and a pulp fiber layer integrated on at least one surface of the nonwoven fabric body. The wet tissue product according to claim 2, wherein the non-woven fabric body has an air permeability of 250 cm ³ / cm ² / sec or more and 750 cm ³ / cm ² / sec or less. The wet tissue product according to any one of claims 1 to 3, wherein the ratio of the chemical solution to the sheet in an absolutely dry state not impregnated with the chemical solution is 150% by weight or more and 320% by weight or less. The wet tissue product according to any one of claims 1 to 4, wherein the sheet has a basis weight of 25 g / m ² or more and 70 g / m ² or less in an absolutely dry state without being impregnated with the chemical solution. The wet tissue product according to any one of claims 1 to 5, wherein the ratio of the length of the take-out port to the length of the sheet is 10% or more and 40% or less. The wet tissue product according to any one of claims 1 to 6, wherein the laminated bundle impregnated with the chemical solution has a density of 0.2 g / cm ³ or more and 0.7 g / cm ³ or less.

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