JP5133675B2 - Skin cleaning sheet - Google Patents

Description

  The present invention relates to a skin cleaning sheet in which a nonwoven fabric is impregnated with a water-based cleaning agent.

  In order to wipe off dirt such as stool and urine attached to the buttocks and excretory part when a baby or a cared person's disposable diaper is replaced, a so-called wiping sheet that is a wet type disposable sheet is widely used. In addition, a wet type sheet impregnated with a cleaning agent for cleaning the excretory part after defecation or when exchanging a sanitary napkin and for removing makeup is also known.

  Many mothers are dissatisfied with the wiping ability of the wiping sheet of the wiping cloth, especially when changing disposable diapers. The stools that are difficult to wipe off are sticky, soft stools, watery stool, diarrheal stools, stool that spreads in large quantities, and stool that has stuck to the skin. In sticky soft stools, watery stools, and diarrhea stools, the color of the stool touches the skin, the color cannot be removed even if wiped many times, and it becomes red and painful when rubbed with rubbing, and it feels difficult to wipe off . In addition, the sticky stool is difficult to wipe off because it cannot be removed by rubbing. If there is leftover from the stool, it may cause blurring, and although there is dissatisfaction that it is difficult to wipe off, it uses several sheets of wiping wipes and rubs it off several times until it can be removed.

  Therefore, proposals have been made to improve the wiping property by using a component having a moisturizing effect for the liquid to be impregnated and reducing the influence on the skin or selecting a nonwoven fabric. For example, in patent document 1, in order to improve the wiping power with respect to skin and to give a moisturizing effect to the skin after wiping, the nonwoven fabric may be impregnated with an oil-in-water emulsion or a concavo-convex pattern may be provided for a wiping function. Have been described.

  Patent Document 2 describes a wet tissue obtained by impregnating an oil-in-water-dispersed emulsion into a nonwoven fabric in which rayon fibers, a hydrophilic polyethylene terephthalate fiber and a fiber web made of a heat-meltable resin are entangled three-dimensionally. Has been. However, even when these wet tissues are used, there is room for improvement in stool wiping properties. In particular, no satisfactory items have been provided for wiping loose stool or stool color on the skin.

JP 2004-261440 A JP 2006-34997 A

  Accordingly, an object of the present invention is to provide a skin cleaning sheet that is excellent in wiping off dirt attached to skin such as loose stool and is easy on the skin.

  In the present invention, an aqueous detergent containing 0.1 to 10% by weight of a nonionic surfactant and 80 to 99.9% by weight of water is impregnated so as to be 1 to 10 parts by weight with respect to 1 part by weight of the nonwoven fabric. The non-woven fabric is composed of 30 to 65% by weight of cellulosic fibers as the first fibers, 15 to 60% by weight of polyester fibers or polyacetal fibers as the second fibers, and 1% official moisture content as the third fibers. % Is a spunlace nonwoven fabric containing 5 to 35% by weight of synthetic fiber or semi-synthetic fiber, and the nonwoven fabric achieves the object by providing a skin cleaning sheet having irregularities or apertures. is there.

  The skin cleaning sheet of the present invention is excellent in wiping off dirt attached to the skin such as loose stool, is gentle to the skin, and has excellent usability.

The present invention will be described below based on preferred embodiments with reference to the drawings.
FIG. 1 shows a wet wipe sheet as an embodiment of the present invention. FIG. 2 is a partially enlarged view of a section taken along line II-II in FIG. As shown in FIG. 1, the wiping sheet 1 is made of a nonwoven fabric, and a convex portion 2 and a concave portion 3 are formed on the whole nonwoven fabric.

  In the wiping sheet 1, an aqueous detergent containing 0.1 to 10% by weight of a nonionic surfactant and 80 to 99.9% by weight of water is added to 1 to 10 parts by weight with respect to 1 part by weight of the nonwoven fabric. It is impregnated.

  The nonionic surfactant to be contained in the aqueous detergent is preferably HLB 8 to 16, considering the use in an aqueous system and the wiping property of stool color attached to the skin, and the HLB 10 to 14 Is more preferable.

  HLB is an index indicating a hydrophilic-lipophilic balance. In the present invention, a value calculated using the following equation by Oda / Teramura et al. Is used.

  HLB = (Σinorganic value / Σorganic value) × 10

  The nonionic surfactant is not particularly limited as long as it is used in a normal cleaning composition, but in particular, a polyethylene glycol higher fatty acid ester represented by the following general formula (1), the following general formula ( The polyoxyethylene alkyl ether represented by 2) is preferable because the irritation to the skin is lower and the wiping property of the stool color attached to the skin is high.

R ₁ COO- (CH ₂ CH ₂ O) _n -H (1)
(In the formula, R ₁ CO represents a saturated or unsaturated acyl group having 4 to 30 carbon atoms, and n represents a number of 1 to 50 on a weight average)

In the formula, R ₁ CO represents a saturated or unsaturated acyl group having 4 to 30 carbon atoms, and in particular, those having 10 to 22 carbon atoms such as caprynoyl group, lauroyl group, myristoyl group, palmitoyl group, and stearoyl group are preferable. Moreover, n shows the number of 1-50 by a weight average, and especially 10-30 are preferable since the wiping property of the color of the stool attached to skin becomes higher.

R ₂ O— (CH ₂ CH ₂ O) _n —H (2)
(Wherein R ₂ represents a saturated or unsaturated alkyl group having 4 to 30 carbon atoms, and n represents a number of 1 to 50 on a weight average basis)

In the formula, R ₂ represents a saturated or unsaturated alkyl group having 4 to 30 carbon atoms, and particularly those having 12 to 18 carbon atoms, such as lauryl group, myristyl group, palmityl group, stearyl group, and oleyl group are preferable. Moreover, n shows the number of 1-50 by a weight average, and especially 4-10 are preferable since the wiping property of the color of the stool attached to the skin becomes higher.

  This nonionic surfactant can be used 1 type or in combination of 2 or more types.

  Moreover, a polyhydric alcohol or glycol ether can be mix | blended with a water-based cleaning agent in order to improve the usability | use_condition and the wiping property of the color of the stool attached to skin. Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin, pentaerythritol, sorbitol, and the like. Examples of the glycol ether include Ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol mono Chirueteru, ethylene glycol monophenyl ether and the like.

  Among these, ethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, glycerin, 1,3-butylene glycol, sorbitol, and diethylene glycol monoethyl ether are preferable from the viewpoint of use feeling, and further propylene glycol and dipropylene glycol are preferable. From the viewpoints of detergency (wiping of stool color on the skin) and low irritation.

  These polyhydric alcohols and glycol ethers can be used alone or in combination of two or more.

  In addition to the essential components described above, the water-based detergent includes components used in ordinary detergent compositions, such as moisturizers, bactericides, preservatives, chelating agents, electrolyte substances, medicinal agents, dyes, fragrances, antioxidants, A pH adjuster or the like can be appropriately blended within a range not impairing the effects of the present invention.

  For water-based detergents, skin care agents include: pepper extract, eucalyptus extract, tuberose extract, clove extract, yuzu extract, evening primrose extract, cherry extract, okra extract, hamamelis extract, aloe extract, yogurt extract, soybean extract, peonies Uses extract, chamomile extract, chlorella extract, raspberry extract, grapefruit extract, avocado extract, bilberry leaf extract, Japanese mango extract, peach leaf extract, trehalose, tannic acid, sodium hyaluronate, polyglutamic acid, synthetic ceramide, etc. be able to.

  The concentration of the nonionic surfactant in the water-based detergent is 0.1 to 10% by weight, particularly 0.3 to 5% by weight, and more preferably 0.5 to 3% by weight. From the viewpoints of wiping properties, stickiness, feeling of use such as slime, and the like. The concentration of the polyhydric alcohol or glycol ether is 1 to 30% by weight, particularly 2 to 20% by weight, from the viewpoint of detergency (wiping ability of stool color on the skin), feel of use and stability of the system. Further, it is preferably 5 to 15% by weight. The water concentration is preferably 80 to 99.9% by weight, particularly preferably 85 to 99.7% by weight, and more preferably 90 to 99.99% from the viewpoint of use feeling such as stickiness and slime. 5% by weight.

  By including a nonionic surfactant in the water-based cleaning agent, the wiping property of skin dirt such as soft stool is improved. When checking the wiping condition of the stool, the color of the stool on the skin and the color of the stool attached to the wiping sheet are used as a guide, but by including a nonionic surfactant in the water-based cleaning agent The wiping property of bilirubin (bile pigment) that governs the color of stool is improved. Therefore, it becomes possible to finish the cleaning without rubbing the wiping sheet many times, and it is difficult to cause damage to the skin.

The confirmation of the bilirubin wiping property can be confirmed as follows. The bilirubin wiping property is evaluated by attaching bilirubin to the inner side of the adult forearm. First, the color difference of the measurement site inside the forearm is measured. B ^* at that time is defined as b _b ^* . The color difference is measured using a handheld simple spectral color difference meter NF333 manufactured by Nippon Denshoku Industries Co., Ltd. Next, bilirubin is attached to the measurement site by rubbing it in a range of about 20 mm in diameter using an about 2 mg ear-prickly scissors. Bilirubin is obtained as a reagent from Wako Pure Chemical Industries. The adhesion amount of bilirubin is adjusted so that Δb ₀ is 15 to 20 when the measured color difference value b ₀ ^* after attachment, Δb ₀ = b ₀ ^* −b _b ^* . Next, a wet wipe sheet to be evaluated is prepared, the cut length is 200 mm × 150 mm, and this is folded into eight (50 mm × 75 mm). Next, an eight-fold sheet is placed beside the bilirubin adhesion site of the forearm, and a weight of 30 mm × 60 mm is placed thereon. The weight is set to 0.5 kPa. Then, the sheet on which the weight is placed is pulled by hand with respect to the forearm portion in the horizontal direction to wipe off the bilirubin adhesion site. The tension is performed in the longitudinal direction (the direction of the length of the sample 75 mm). After wiping, the color difference is measured using a color difference meter, and the value at that time is defined as b ₁ ^* . If Δb ₁ = b ₁ ^* −b _b ^* and this Δb ₁ is 5 or less, it is determined that the wiping property is good.

  The non-woven fabric is composed of 30 to 65% by weight of cellulose fiber as the first fiber, 15 to 60% by weight of polyester fiber or polyacetal fiber as the second fiber, and 1% by weight or more of the official moisture content as the third fiber. A spunlace nonwoven fabric containing 5 to 35% by weight of fiber or semi-synthetic fiber. The nonwoven fabric is obtained by mixing the first fiber, the second fiber, and the third fiber to form a web, and entangle the fibers with each other by a hydroentanglement method. The non-woven fabric may contain other fibers in consideration of hydrophilicity, non-woven fabric strength, texture and the like.

  Cellulosic fibers, which are the first fibers contained in the nonwoven fabric, are contained in an amount of 30 to 65% by weight, and 40 to 60% by weight, as fibers constituting the nonwoven fabric, from the viewpoint that the aqueous detergent can be favorably retained. Preferably it is. Examples of the cellulosic fibers include natural cellulosic fibers such as cotton, pulp and hemp, and regenerated cellulosic fibers such as rayon, lyocell and cupra. It is preferable to use a lyocell fiber from the viewpoint of imparting the formation of irregularities due to hydroentanglement in the spunlace method and the bulkiness of the sheet.

  The 2nd fiber contained in a nonwoven fabric is contained 15 to 60weight% as a fiber which comprises a nonwoven fabric from the point which provides intensity | strength to a nonwoven fabric, and it is preferable that 20 to 50weight% is contained. The second fiber is a polyester fiber or polyacetal fiber, and examples of the polyester fiber include polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate. Polyester fiber and polyacetal fiber have elasticity and recovery (restoration) properties, so the force to return to bending by water flow works strongly in the process of bending and entanglement of fiber with water flow, resulting in a bulky structure with large voids Can be made. The polyester fiber or polyacetal fiber is preferably hydrophilic from the viewpoint of forming irregularities by water entanglement in the spunlace method and retaining the aqueous detergent. As a method of imparting hydrophilicity to the fiber, a hydrophilic oil agent is attached to the fiber surface by spraying or dipping method, roll coating method, or a hydrophilic component is added to the resin and kneaded before spinning the fiber, It can be given by spinning. As the hydrophilic oil agent, anionic, cationic, amphoteric and nonionic surfactants having various molecular weights can be used singly or in combination, but it is usually used when a nonwoven fabric is formed by the spunlace method. Since the hydrophilized oil agent flows down, the retention and dispersibility of the impregnating liquid are lowered when used in a wet sheet. Examples of preferable techniques for hydrophilization include methods in which durability is imparted to an aqueous solution, such as JP2007-31906, JP2005-344260, JP2005-154975, and JP2001-303450. It is done.

  Non-woven fabric, especially from the point that water-based cleaning agent can be retained well, the content of the cellulose fiber that is the first fiber, compared to the content of the polyester fiber or polyacetal fiber that is the second fiber, A large amount is preferable.

  The synthetic fiber or semi-synthetic fiber, which is the third fiber contained in the nonwoven fabric, has an official moisture content of 1% by weight or more. Among the synthetic fibers or semi-synthetic fibers, the water repellency is low, and the official moisture content is It is expressed as an index of the degree of familiarity with water. In general, when the moisture content is 0.3% by weight or less in terms of official moisture content, it is not familiar with water and becomes hydrophobic or water repellent. The official moisture content is preferably 1% by weight or more, and more preferably 1.5% by weight or more, from the viewpoints of unevenness formation and dispersibility and retention of the aqueous detergent. From the viewpoint of forming irregularities by hydroentanglement in the spunlace method and the dispersibility of the aqueous detergent, the third fiber is included as a fiber constituting the nonwoven fabric in an amount of 5 to 35% by weight, and includes 10 to 30% by weight. It is preferred that Examples of the synthetic fiber that is the third fiber include acrylic, nylon, and vinylon, and examples of the semi-synthetic fiber include acetate and protein fiber. Acrylic fibers are particularly preferred from the standpoint of maintaining voids and maintaining thickness when impregnated with a cleaning agent.

The basis weight of nonwoven fabrics, 10 to 100 g / m ^2, especially 15 to 80 g / m ^2, even 20 to 50 g / m ² is the point wiping properties and feel is good, also from the viewpoint of cost. This average basis weight can be determined by measuring the weight per fixed area (1 m ² ) by a conventional method.

  The thickness of the nonwoven fabric is preferably 0.3 to 2.5 mm, particularly preferably 0.5 to 1.8 mm, from the viewpoint of wiping off highly viscous excrement such as loose stool. The thickness is measured with a dial gauge or laser displacement meter under a pressure of 36 Pa.

  The fineness of each fiber constituting the non-woven fabric is 4 dtex or less, particularly 2.5 dtex to 0.7 dtex, from the viewpoints of touch, wiping of soft stool, and retention of stool. The method of measuring the fineness is: “The fineness of the constituent fiber is dyed and identified with the Bokenstein reagent, and after confirming the type of the constituent fiber, it is magnified 150 to 500 times with a stereomicroscope or an electron microscope. Observe and measure the width of the fiber in several places if the cross section is roughly circular.Calculate the fineness from the density and the cross-sectional area of the fiber for each fiber type, and obtain the average fineness. Similarly, a cross-sectional shape is approximated to a geometric shape, a cross-sectional area is obtained, and an average fineness is calculated.

  The average fiber length of the constituent fibers of the nonwoven fabric is preferably 20 to 80 mm, more preferably 30 to 70 mm, from the viewpoints of the formability of unevenness and the touch. This average fiber length is observed by enlarging 20 times to 50 times with a stereomicroscope or an electron microscope, and the length of one fiber is measured. Measure two or more fibers and determine the average.

As shown in FIG. 1, the nonwoven fabric constituting the wiping sheet 1 has irregularities including the convex portions 2 and the concave portions 3, and is excellent in stool wiping and retaining properties. The height h of the convex portion is preferably 0.1 to 1.2 mm, and more preferably 0.2 to 0.8 mm. Area in plan view of one convex portion 2 is preferably 0.1 to 10 mm ^2, more preferably 0.3 to 5 mm ^2. It is preferable that the space | interval p of the convex part 2 and the convex part 2 is 1-10 mm, and the space | interval of the recessed part 3 and the recessed part 3 is also the same. The convex portions are circular in plan view and are arranged in a staggered manner. In addition, the shape and arrangement | positioning of the convex part 2 are not restrict | limited to this, A quadrangle | tetragon, a triangle, a flower shape may be sufficient, and you may arrange | position at streaks. The height of the convex part and the area of the convex part in plan view are magnified with a real microscope, measured ten, and obtained from the average.

  There is no particular limitation on the method of forming the unevenness, and it can be formed by sandwiching with a roll having unevenness in the subsequent process of manufacturing the nonwoven fabric. It is preferable to form it in the hydroentanglement process of the spunlace method from the point of making it favorable and the point of touch. In order to form in the hydroentanglement process of the spunlace method, the unevenness can be provided by changing the mesh size or pattern of the net.

  The fiber gaps in the convex and concave portions are preferably 5 to 80 μm, particularly preferably 15 to 50 μm, from the viewpoint of improving stool wiping and retention. This average fiber distance is determined by the method described in JP-A-2006-045096.

  In order to impregnate the nonwoven fabric with the aqueous detergent, it may be impregnated by a gravure coater, a die coater, a coating application from a nozzle, or a spray application. Here, the impregnation amount of the water-based cleaning agent is 1 to 10 parts by weight, preferably 1.5 to 5 parts by weight, based on 1 part by weight of the nonwoven fabric, from the viewpoints of detergency and use feeling. If the amount of impregnation is small, sufficient detergency may not be obtained, and if it is too large, the feeling of use such as a null feeling and a refreshing feeling is deteriorated. The thickness of the impregnated non-woven fabric (butt wipe sheet) is preferably 0.3 to 2.5 mm, particularly preferably 0.5 to 1.8 mm, from the viewpoint of wiping away highly viscous excrement such as soft stool. The thickness is measured by a dial gauge type or laser type displacement meter under the same pressure of 36 Pa as that at the time of drying.

  The wiping sheet of the present embodiment is impregnated with an aqueous detergent containing a nonionic surfactant, and has good wiping property for feces, particularly wiping color of feces attached to the skin. Further, unevenness is formed, stool wiping and retaining properties are good, and the touch is also good. In particular, the convex portion 3 has a large fiber void and is bulky, so that the retention of soft stool is good. Since the wiping property of the stool is good, it is not necessary to rub the butt over and over and is gentle to the skin.

Next, another preferred embodiment (second embodiment) will be described. The description of the above-described embodiment applies unless otherwise specified. The nonwoven fabric which comprises the wiping sheet | seat sheet | seat 1 has the opening part 4, as shown in FIG. 3, and is excellent in the wiping off property and the retainability of this. The number of the apertures 4 that are formed in the same shape in the vertical or horizontal direction is magnified with an actual microscope to measure ten, and the average is obtained as the average aperture area. Preferably opening area is 0.1 to 10 mm ^2, more preferably 0.3 to 5 mm ^2. It is preferable that the space | interval p of the opening part 4 and the opening part 4 is 1.5-3 mm. The openings 4 are circular or elliptical in plan view and are arranged in a staggered manner. In addition, the shape and arrangement | positioning of the aperture part 4 are not restricted to this, A square, a triangle, and a flower shape may be sufficient. In addition, the opening 4 may have a combination of different opening diameters and shapes in the above range.

  There is no restriction | limiting in particular in the formation method of the opening part 4, It can form by pinching / opening with the roll which has an unevenness | corrugation in the post process of nonwoven fabric manufacture, but the clarity and shape maintenance property of an opening part It is preferable to form in the hydroentanglement process of the spunlace method in terms of the point and the touch. Thereby, it is possible to improve the uptake and retention of dirt. In order to form in the hydroentanglement process of the spunlace method, the aperture can be adjusted by changing the mesh size or pattern of the net.

  The wet wipe sheet according to the second embodiment is impregnated with a water-based cleaning agent containing a nonionic surfactant, and has good wiping property for stool, especially wiping color of stool on the skin. is there. Moreover, the opening part 4 is formed, the wiping property and retention of feces are good, and the touch is also good.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment.

  In the above-described embodiment, the first fiber to the third fiber are mixed when the spunlace is performed. After forming the webs of the respective fibers, the webs are laminated to form a three-layer web. The fibers of the web and the fibers of the interlayer may be entangled to form a nonwoven fabric. Alternatively, a web in which two types of fibers are mixed may be formed, laminated on another type of fiber web, and formed into a nonwoven fabric by a hydroentanglement method. For example, when the first fiber is the central layer, the web formed by mixing the second fiber and the third fiber is laminated as the upper and lower layers, and the nonwoven fabric is made by the hydroentanglement method, the wet feeling on the surface of the nonwoven fabric Therefore, it is possible to obtain a skin cleaning sheet having a structure in which the impregnating liquid oozes out from the nonwoven fabric by pressurization.

  In the above-described embodiment, the single-layer spunlace nonwoven fabric is used. However, a web containing the first fiber to the third fiber is laminated on another nonwoven fabric, and the web and the nonwoven fabric are integrated by a hydroentanglement method. You may obtain a nonwoven fabric.

  The skin cleaning sheet of the present invention can also be used for cleaning the excretory part after defecation or when exchanging sanitary napkins. The skin cleaning sheet of the present invention is also useful as a makeup remover.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further more concretely, this invention is not limited to these. Of the following examples, Example 1 is a reference example and is outside the scope of the present invention. In the following examples, “%” means “% by weight” unless otherwise specified.

[Example 1]
Lyocell fiber (fineness 1.7 dt, fiber length 38 mm), hydrophilized PET fiber (fineness 1.6 dt, fiber length 51 mm), acrylic fiber (fineness 1.0 dt, fiber length 51 mm, official moisture content 2.0% by weight) 50%, 20%, and 30% by weight were mixed to produce a card web. Next, the web fibers were entangled by the hydroentanglement method to form a nonwoven fabric, and then a concavo-convex embossing treatment was performed to give a concavo-convex shape, thereby obtaining a concavo-convex spunlace nonwoven fabric having a basis weight of 50 g / m ² . The shape of the projections in plan view is circular, the size is 2.5 mm in diameter, the height h of the projections is 0.6 mm, and the interval p between the projections is 9 mm in the MD direction and 7 mm in the CD direction. (Pattern 1).

  Next, as shown in Table 1, an aqueous detergent containing 3% by weight of polyethylene glycol (n = 12) monolaurate (HLB = 14) as a nonionic surfactant was blended. A water-based cleaning agent was spray applied at a ratio of 2.0 parts by weight to 1 part by weight of the nonwoven fabric to obtain a skin cleaning sheet.

[Example 2]
Lyocell fiber (fineness 1.7 dt, fiber length 38 mm), hydrophilized PET fiber (fineness 1.6 dt, fiber length 51 mm), acrylic fiber (fineness 1.0 dt, fiber length 51 mm, official moisture content 2.0% by weight) A card web was prepared by mixing at a weight ratio of 45%, 35%, and 20%. Next, the web fibers are entangled by the hydroentanglement method to form a non-woven fabric, and then water flow treatment is performed again on a plain weave concavo-convex net of 12 per inch and an opening having a basis weight of 50 g / m ² A spunlace nonwoven fabric was obtained. The pattern shape is an elliptical shape in which the size of the aperture is 1.5 mm in the MD direction and 0.8 mm in the CD direction, and the interval p between the apertures is 5.6 mm in the MD direction, CD The direction is 4 mm and they are arranged in a staggered pattern (pattern 2). Next, as shown in Table 1, an aqueous cleaning agent was blended in the same manner as in Example 1 and applied to a nonwoven fabric to obtain a skin cleaning sheet.

Example 3
A card web was produced in the same manner as in Example 2. Next, the web fibers are entangled by the hydroentanglement method to make a non-woven fabric, and then the water flow treatment is again performed on the plain weave uneven net of 25 verticals and 17 horizontals per inch, and an opening portion having a basis weight of 50 g / m ² A spunlace nonwoven fabric was obtained. The pattern shape is an elliptical shape in which the size of the aperture is 1 mm in the MD direction and 0.6 mm in the CD direction. The interval p between the apertures is 3 mm in the MD direction and 2 mm in the CD direction. They are arranged in a staggered pattern (pattern 3). Next, as shown in Table 1, an aqueous cleaning agent was blended in the same manner as in Example 1 and applied to a nonwoven fabric to obtain a skin cleaning sheet.

Example 4
45% lyocell fiber (fineness 1.7 dt, fiber length 38 mm), polyacetal fiber (fineness 2.2 dt, fiber length 51 mm), acrylic fiber (fineness 1.0 dt, fiber length 51 mm, official moisture content 2.0% by weight) , 35%, and 20% by weight to produce a card web. Next, a spunlace nonwoven fabric having an aperture (pattern 2) having a basis weight of 50 g / m ² was obtained by the hydroentanglement method in the same manner as in Example 2. The shape of the opening is the same as that in Example 2. Next, as shown in Table 1, a water-based cleaning agent was blended in the same manner as in Example 1 and spray-coated on the nonwoven fabric to obtain a skin cleaning sheet.

[Examples 5 to 8]
As shown in Table 1, a spunlace nonwoven fabric was obtained with the same composition and production method as in Example 2. Next, an aqueous cleaning agent was blended with the materials and blending amounts shown in Table 1, and spray-coated on the nonwoven fabric to obtain a skin cleaning sheet.

[Comparative Examples 1 and 2]
Rayon fibers (fineness 1.5 dt, fiber length 40 mm) and PET fibers (fineness 1.5 dt, fiber length 38 mm) are mixed at a weight ratio of 60% and 40% to produce a card web. Next, the web fibers were entangled by the hydroentanglement method to obtain a spunlace nonwoven fabric having a basis weight of 38 g / m ² . Next, an aqueous cleaning agent was blended with the materials and blending amounts shown in Table 1, and spray-coated on the nonwoven fabric to obtain a skin cleaning sheet.

[Comparative Examples 3, 5-7]
In the same manner as in Example 2, a spunlace nonwoven was obtained. Next, an aqueous cleaning agent was blended with the materials and blending amounts shown in Table 1, and spray-coated on the nonwoven fabric to obtain a skin cleaning sheet.

[Comparative Example 4]
Lyocell fiber (fineness 1.7 dt, fiber length 38 mm), hydrophilized PET fiber (fineness 1.6 dt, fiber length 51 mm), acrylic fiber (fineness 1.0 dt, fiber length 51 mm, official moisture content 2.0% by weight) A card web is prepared by mixing at a weight ratio of 45%, 35%, and 20%. Next, the web fibers were entangled by the hydroentanglement method to obtain a spunlace nonwoven fabric having a basis weight of 50 g / m ² . Next, an aqueous cleaning agent was blended with the materials and blending amounts shown in Table 1, and spray-coated on the nonwoven fabric to obtain a skin cleaning sheet.

[Evaluation]
About the produced sheet | seat for skin washing | cleaning, the wiping property of the stool color (bilirubin), the wiping property of a stool, and the usability | use_condition were evaluated by the following method, respectively. These results are shown in Tables 1 and 2 below. These evaluations were performed in an environment of 23 ± 2 ° C. and a relative humidity of 50 ± 10%.

(1) Wiping property of stool color (bilirubin) The evaluation method was performed by the method described above, and Δb ₁ after wiping once was calculated and evaluated according to the following criteria.
◎: Less than 3.5 ○: 3.5 or more and less than 5 Δ: 5 or more and less than 7 ×: 7 or more

(2) Stool wiping property The stool wiping property was evaluated using a water-based paint as a substitute for stool. Apply 0.5 g of water-based paint (Guitar Paint, viscosity 4 Pa · s, blue) uniformly in a circular shape with a diameter of 25 mm centering on a position 20 mm from the upper end in the longitudinal direction on an acrylic plate (7 cm × 10 cm). . After leaving for 1 minute, the skin-washing sheet folded in half is placed with its one end aligned with the upper end of the acrylic plate in the longitudinal direction, and a weight with a diameter of 25 mm is placed on the position where the paint is applied. The weight is 1.8 kPa. The skin cleaning sheet only needs to be sufficiently larger than the area where the paint is applied. Then, the sheet on which the weight is placed is pulled 6 cm at a constant speed in the longitudinal direction (from the upper end to the lower end). At that time, the amount of paint attached to the sheet was measured and evaluated according to the following criteria.
A: 0.30 g or more O: 0.26 g or more and less than 0.30 g Δ: 0.23 g or more and less than 0.26 g ×: Less than 0.23 g

(3) Feeling of use Wipe the inside of the forearm with a skin cleaning sheet to a professional panelist such as a mother with childcare experience, and feel the use of the skin after being left for 30 seconds. Sensory evaluation was performed.
A: Very good (like).
○: Good (like).
Δ: Normal.
X: Bad (dislike).

  As is clear from the results shown in Tables 1 and 2, the skin cleaning sheet (wet wiping sheet) of the example is a comparison that does not use the detergent and / or nonwoven fabric containing the nonionic surfactant of the present invention. Compared to the examples, the stool color wiping property on the skin, the stool wiping property, and the feeling of use such as stickiness and sliminess of the skin after use were good.

FIG. 1 is a perspective view showing an embodiment of the skin cleaning sheet of the present invention. FIG. 2 is a partially enlarged view of a section taken along line II-II in FIG. FIG. 3 is a perspective view showing another embodiment of the skin cleaning sheet of the present invention. 4 is a partially enlarged view of a section taken along line IV-IV in FIG.

Explanation of symbols

1 Skin cleansing sheet (wet wipe sheet)
2 Convex part 3 Concave part 4 Opening part

Claims (7)

An aqueous detergent containing 0.1 to 10% by weight of a nonionic surfactant having an HLB of 10 to 14 and 80 to 99.9% by weight of water is 1 to 10 parts by weight with respect to 1 part by weight of the nonwoven fabric. So that it is impregnated
The nonwoven fabric has 30 to 65% by weight of cellulose fiber as the first fiber, 15 to 60% by weight of polyester fiber or polyacetal fiber as the second fiber, and 1% by weight or more of the official moisture content as the third fiber. A skin-cleaning sheet, which is a spunlace nonwoven fabric containing 5 to 35% by weight of synthetic fiber or semi-synthetic fiber, and the nonwoven fabric has an opening.   2. The skin cleaning sheet according to claim 1, wherein the nonwoven fabric has a higher content of the first fibers than a content of the second fibers. Before KiHiraki hole section, skin cleaning sheet according to any one formed according to claim 1 or claim 2 in hydroentangling process in spunlace.   The said cellulosic fiber is a lyocell fiber, The sheet | seat for skin cleaning in any one of Claims 1-3. The nonionic surfactant is a polyethylene glycol higher fatty acid ester represented by the general formula (1) or a polyoxyethylene alkyl ether represented by the general formula (2). The skin cleaning sheet according to any one of the above.
R ₁ COO- (CH ₂ CH ₂ O) _n -H (1)
(In the formula, R ₁ CO represents a saturated or unsaturated acyl group having 4 to 30 carbon atoms, and n represents a number of 1 to 50 on a weight average)
R ₂ O— (CH ₂ CH ₂ O) _n —H (2)
(Wherein R ₂ represents a saturated or unsaturated alkyl group having 4 to 30 carbon atoms, and n represents a number of 1 to 50 on a weight average basis)   The skin cleaning sheet according to any one of claims 1 to 5, wherein the second fiber is hydrophilic.   The sheet for skin cleaning according to any one of claims 1 to 6, wherein the aqueous detergent further contains 1 to 30% by weight of a polyhydric alcohol or glycol ester.

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