JP6429664B2 - Wipe sheet - Google Patents

Description

The present invention relates to a wiping sheet , and more particularly to a wiping sheet that can be wiped in a dry state and a wet state.

Conventionally, a wiping sheet using ultrafine fibers (microfibers) having an average fiber diameter of 10 μm or less is known. For example, Patent Document 1 discloses a wiping sheet having a surface layer including ultrafine fibers formed by splitting split-type composite fibers and a back surface layer including hydrophilic fibers having a larger average fiber diameter than the ultrafine fibers. Has been.

Japanese Patent No. 3944526

When such a wiping sheet is used as a sheet for wiping off facial sebum and makeup dirt in a dry or wet state, the surface layer formed from ultrafine fibers directly touches the user's skin, Since ultrafine fibers can penetrate into pores and scrape off sebum and makeup stains, it is excellent in wiping properties and has low irritation to the skin and excellent touch.

However, the split-type composite fiber of the surface layer does not have a smooth curved surface when viewed in the cross section in the radial direction, and may cause irritation to the skin when touching sensitive skin. Moreover, since the back surface formed with the back surface layer which consists of hydrophilic fibers is smooth, it is hard to function as a wiping surface. Therefore, when the user selects the back surface of the wiping sheet as the wiping surface, it is not possible to sufficiently capture the makeup poucher and dust attached to the face.

An object of the present invention is an improvement of the prior art relating to wiping sheet having a front and back, a good feel of the surface, is to provide a wiping sheet can exert the wiping property in both front and back surfaces.

In order to achieve the above object, the present invention provides a first direction and a second direction intersecting the first direction, a surface layer mainly composed of a hygroscopic filament having an average fiber diameter of 10 μm or less, and an average fiber diameter of 10 μm. The present invention relates to a wiping sheet having a back layer mainly composed of super staples.

In the wiping sheet according to the present invention, in the surface layer, the filaments are irregularly arced and uniformly spread in a mesh shape, and a plurality of apertures arranged in the first direction are formed in the back surface layer. And the filament straddles at least a part of the opening.

According to the wiping sheet according to the present invention, the surface layer has a good skin contact, because the filaments having an average fiber diameter of 10 μm or less are irregularly arced and uniformly spread in a mesh shape. In addition to being excellent in the brushing effect, a uniform liquid film is formed when a liquid such as a cosmetic liquid is supplied, and the skin can be wetted uniformly. In addition, the back surface layer is formed with a plurality of apertures arranged in the first direction, so that makeup powder and fine dust can be supplemented when rubbing the skin.

The drawings show specific embodiments of the wiping sheet according to the present invention, including optional and preferred embodiments as well as the essential components of the invention.
The perspective view of the wiping sheet which concerns on this invention. The partial enlarged plan view of a surface layer. Sectional drawing which follows the III-III line of FIG. FIG. 4 is a partially enlarged view of a region surrounded by an alternate long and short dash line IV in FIG. 3. The side view which shows typically the main part in the manufacturing process of a wiping sheet . The perspective view of the makeup pad in which the wiping off sheet concerning the present invention is used. Sectional drawing which follows the VII-VII line of FIG. (A) Perspective view of container for refilling wet sheet, (b) Partially enlarged side view of wet sheet laminate in container.

The following embodiment relates to the wiping sheet 1 shown in FIGS. 1 to 8 as an example of the present invention, and includes not only an indispensable structure of the invention but also a selective and preferable structure.

Referring to FIGS. 1 and 2, a wiping sheet 1 according to the present invention has a first direction X and a second direction Y intersecting with the first direction X, and a front surface 1a and a back surface 1b, and a surface layer 2 and a back surface layer stacked on each other. 3 is included. The surface layer 2 is formed of a nonwoven fabric mainly composed of melt blown fibers that are hygroscopic filaments (continuous fibers) 4 having an average fiber diameter of 10 μm or less. As the filament 4, for example, polyamide fibers such as nylon 6 and nylon 66, acrylic fibers, or hydrophilized hydrophobic fibers can be used. The content of the filament 4 in the surface layer 2 is about 60% by mass or more, preferably about 95% by mass or more, and in this embodiment, 100% by mass.

  The back surface layer 3 includes staples 5 such as cellulose-based staples such as regenerated fibers having water absorbency such as rayon staples and natural fibers having water absorbency such as pulp fibers, and staples of thermoplastic synthetic fibers. The staple content in the back layer 3 is about 50 to 100% by mass for cellulosic staples and about 0 to 50% by mass for staples of thermoplastic synthetic fibers. As the thermoplastic synthetic fiber, for example, synthetic fibers such as polyethylene, polypropylene, polyethylene terephthalate, a mixture of synthetic fibers, or composite fibers using two or more of these synthetic resins can be used. Moreover, as a composite fiber, the core-sheath type | mold and eccentric type | mold which consist of two synthetic fiber components from which melting | fusing point differs can be used, and by using this, the staple 5 is crimped, and there exists a stretching property or bulkiness. The back layer 3 can also be formed.

  The fiber length of the filament 4 is in the range of 30 to 200 mm, and the fiber length of the staple 5 is smaller than that. Further, the average fiber diameter of the filament 4 (diameter of the single fiber) is smaller than the average fiber diameter of the staple 5 of the back layer 3, and specifically, the average fiber diameter of the filament 4 is preferably 10 μm or less, more preferably. Is about 5 μm or less, and the average fiber diameter of the staple 5 is about 10 μm or more, more preferably 10 to 20 μm. Further, the filament 4 has a lower hygroscopicity than the staple 5, and in this specification, the filament 4 is also referred to as an ultrafine fiber and / or a low hygroscopic fiber, and the staple 5 is also referred to as a high hygroscopic fiber or a water absorbent fiber.

3 and 4, wiping thickness t1 of the sheet 1 is preferably about 0.2 to 0.3 mm, weight per unit area of the sheet 1 wiping, about 25~40g / ^{m 2} It is preferable that it is the range of these. Moreover, the specific volume of the wiping sheet | seat 1 is about 145 m < ³ > / kg in this embodiment. The thickness dimension t2 of the surface layer 2 is smaller than the thickness dimension t3 of the back surface layer 3, and the thickness dimension t2 of the surface layer 2 is 20 to 60% of the thickness dimension t3 of the back surface layer 3. preferable. Specifically, the thickness dimension t2 of the surface layer 2 is about 0.02 to 0.15 mm, and the thickness dimension t3 of the back surface layer 3 is about 0.1 to 0.25 mm. When the thickness dimension t2 of the surface layer 2 is less than 0.02 mm, the wiping portion of the wiping sheet 1 may become too thin and the wiping property may be deteriorated. On the other hand, the thickness dimension t2 is more than 0.15 mm. in this case, since the thickness t3 of the relatively backside layer 3 is reduced, the sheet 1 wiping is lower flexural rigidity of the wiping sheet 1, which may cause the accordance and in use waste paper becomes weak.

<Measurement method of thickness dimension>
Thickness t1 of the sheet 1 wiping, while applying a 3.0 gf / cm ² load on the seat 1 wiping, measured using a thickness gauge (Ltd. Daiei Kagaku Seiki Seisakusho, UF-60). The thickness dimensions t2 and t3 of the surface layer 2 and the back surface layer 3 are measured by observing the cross section of the wiping sheet 1 using a microscope (manufactured by Keyence Corporation, Real Surface View Microscope VE-7800). The density of each of the wiping sheet 1, the front surface layer 2, and the back surface layer 3 is based on density (g / cm ³ ) = mass per unit area (g / m ² ) / thickness dimension (mm) × 10 ^−3. The specific volume (m ³ / kg) of the wiping sheet 1 is calculated as the reciprocal of the density (g / cm ³ ) × 10 ³ .

Mass per unit area of the surface layer 2 is in a range of 5 to 30 g / ^{m 2,} and more preferably 5 to 15 g / ^{m 2.} Preferably the density of the surface layer 2 is about 0.05 to 0.2 g / cm ^3, in the present embodiment is about 0.11 g / cm ^3. When the mass per unit area of the surface layer 2 is about 10 g / m ² or less, the mass per unit area of the back layer 3 is preferably about 25 g / m ² or more. The mass per unit area of the back surface layer 3 is about 10 to 35 g / m ² , and more preferably about 15 to 30 g / m ² . The density of the back layer 3 is preferably about 0.08 to 0.2 g / cm ³ .

The wiping sheet 1 of the present invention can be used in either a dry or wet state, and covers a wiping sheet for wiping off dirt such as sebum or makeup adhering to the skin or a pad of a makeup pad. It is suitably used as a wet sheet (wet tissue) impregnated with a sheet or a cleansing agent. When the wiping sheet 1 is used in a wet state, it can be impregnated with water, wetting agents such as ethylene glycol, drugs such as alcohols and antibacterial agents, fragrances and other components by known methods. Further, the wipe sheet 1 is used as a wipe for objectives (including dry) impregnated with drugs such as anti-personal agents and antibacterial agents as in the present embodiment. It can be used for a surface sheet of a sanitary napkin or a body side liner of a disposable diaper. When the wiping sheet 1 is used for such a product, the air permeability is good and the body fluid diffusibility is excellent compared to the case of using other wiping sheets .

The front surface layer 2 and the back surface layer 3 constituting the wiping sheet 1 are bonded to each other by a binder such as an adhesive, a mechanical entanglement method such as a needle punch entanglement method, a fluid entanglement method (a hydroentanglement method, an air entanglement method), or the like. These can be integrally laminated by various known methods, and are preferably integrated by the hydroentanglement method. As long as the effects of the present invention described later are exhibited, the wiping sheet 1 can be formed in the form of a binder nonwoven fabric by bonding both layers 2 and 3 with an adhesive (binder). When the fibers 4 and 5 to be entangled and integrated with each other by the hydroentanglement method, the entire wiped fiber web is entangled more precisely and uniformly while eliminating the fact that the wiping sheet becomes hard due to the use of a binder. In addition, it is possible to obtain a wiping sheet having excellent flexibility and good skin contact. In addition, when the wiping sheet | seat 1 is not formed by the fluid entanglement method, in order to shape the back surface layer 3 in uneven | corrugated shape, it can also heat-press.

<Manufacturing method of wiping sheet >
FIG. 5 is a side view schematically showing main parts in the manufacturing process of the wiping sheet 1. The main part in the manufacturing process will be described with reference to FIG. 5. First, a first web 71 (upper layer) for forming the surface layer 2 and a second web (lower layer) 72 for forming the back surface layer 3 are formed. The laminated composite web 73 is conveyed in the machine direction MD under the action of jetting high-pressure water. The composite web 73 is optionally supplied with a water film from a tank 74 to stabilize the form, and then guided to an endless belt-like mesh screen 75 as an opening support. The suction is applied from below the mesh screen 75 to drain the water, and a high-pressure water flow is jetted from a nozzle 77 provided with a plurality of orifices having a predetermined diameter and pitch from above. A plurality of nozzles 77 are arranged in the direction intersecting the machine direction MD.

  The mesh screen 75 is formed by plain weaving a plurality of stainless steel wires crossing each other, for example, a warp wire 75a and a weft wire 75b orthogonal to each other, and the plurality of openings and the wires 75a and 75b are connected to each other. And a plurality of knuckle portions 78 intersecting each other. In this manufacturing process, by injecting a high-pressure water stream on the first web 71 side, the smoothness on the skin contact surface side in the first web 71 is improved, and the surface layer 2 has good skin contact, As long as the effects of the present invention described later are exhibited, a high-pressure water flow may be injected to the second web 72 side, or a high-pressure water flow may be injected from both sides of the first web 71 side and the second web 72 side. Good. Further, as a preliminary entanglement process, after the composite web 73 is subjected to a needle punch process, a high-pressure water flow process may be performed on one side or both sides. In the knuckle portion 78, the warp wire 75a and the weft wire 75b overlap each other so as to protrude toward the composite web 73.

  3-5 again, the fibers of the first web 71 and the fibers of the second web 72 are entangled by such high-pressure water flow treatment, and the second web 72 is formed on the mesh screen 75. Among the fibers (staples) that are located, the fibers located on the knuckle part 78 are moved by the action of jetting of the high-pressure water stream, so that they are rearranged in the knuckle part 78 and an opening 80 in which no fiber is present is formed. The second web 72 is formed with a plurality of groove portions 82 that are aligned in the cross direction and extend in the machine direction MD by the high-pressure water flow ejected from the plurality of nozzles 77 that are aligned in the cross direction. A portion 81 is formed. The plurality of flange portions 81 and the groove portions 82 are alternately arranged in the second direction Y, and the openings 80 are spaced apart from each other by a predetermined dimension in the first direction X (crossing direction) in the groove portion 82. A hole array is formed. On the other hand, the first web 71 to which the high-pressure water stream is directly jetted is jetted in a state where the fiber gap is relatively small and filaments 4 made of ultrafine fibers such as nylon are randomly arranged so that the fibers can move. Therefore, unlike the second web 72, the plurality of apertures 80 are not formed by being unevenly formed, and the filaments 4 are irregularly arced and uniformly spread in a mesh shape. It has a structure. The filaments 4 are mainly entangled with each other to form a sheet, but some of them may be fused.

  In the hydroentanglement method, it is preferable to perform the treatment at a relatively low water pressure. Specifically, the water pressure is increased from a nozzle 77 in which orifices having a hole diameter of 0.1 to 0.5 mm are arranged at intervals of 0.2 to 2.0 mm. It is preferable to inject a columnar water flow of 1 to 8 MPa onto the composite web 73. By processing at a relatively low water pressure, the first web 71 maintains a mesh without unentanglement of the filaments 4, while the second web 72 has ridges 81 alternately arranged in the second direction Y. As a result, a concavo-convex structure can be formed.

  The filaments 4 in the first web 71 may be oriented in the machine direction MD depending on the manufacturing method (for example, melt blown method). However, when the filaments 4 are entangled with each other while being randomly distributed, the filaments 4 are irregularly arced. It becomes easier to form a network structure that is drawn and spreads uniformly in a mesh pattern. The filament 4 and the staple 5 are entangled with each other in the flange portion 81 of the back surface layer 3, and at least a part of the filament 4 is one of the many openings 80 in the groove portion 82 of the back surface layer 3. It straddles the part.

The wiping sheet 1 having such a laminated structure is a sheet for wiping off cosmetic powder particles such as sebum and ceramic adhering to the skin using the surface 1a as the first wiping surface in a dry state and a wet state, for example, a wet tissue It can be used as a sheet for wiping makeup, a covering sheet for makeup pads, and the like. On the surface 1a formed from the surface layer 2, since the ultrafine filaments 4 are spread uniformly in a mesh shape, the edge of the mesh, which is the periphery of the mesh, is pressed when pressed against the face. The formed filament 4 enters the pores by the edge effect, scrapes out cosmetic powder, sebum, and the like and takes it inside the mesh, and the surface layer 2 can perform a brushing function.

In order to perform such a brushing function, for example, an ultrafine fiber obtained by splitting a split composite fiber can be used as the fiber constituting the surface layer 2, but in that case, the ultrafine fiber generated by splitting is used. The surface of the skin may irritate the skin when it rubs against the skin. Like the wiping sheet 1 according to the present embodiment, the use of the filament 4 made of non-divided ultrafine fibers such as nylon for the surface layer 2 can eliminate such skin irritation. Moreover, since the filament 4 does not have a fiber end on the surface 1a unless it is cut in the manufacturing process of the wiping sheet 1, it is possible to suppress irritation caused by the fiber end touching the skin.

Further, the back surface layer 3 to form a back surface 1b includes a plurality of ridges 81 and grooves 82 extending in the first direction X are alternately arranged in the second direction Y, opening the multiple is in the groove 82 80 The back surface 1b can also function as the second wiping surface. That is, when the back surface 1b has a flat shape with no openings and irregularities, when the user uses the back surface 1b as a wiping surface on the skin, dirt such as cosmetic powder and dust is not captured and is sufficiently soiled. Can not be wiped off. In the wiping sheet 1 according to the present embodiment, since the plurality of apertures 80 are formed in the back surface layer 3, the back surface 1 b is not flat, and when rubbing the skin with the back surface 1 b, cosmetic powder, dust, etc. It is possible to capture the stains and to exhibit a sufficient wiping property. Therefore, the user can use the wiping sheet 1 by freely selecting either the front surface 1a or the back surface 1b as the wiping surface. Thus, as long as both front and back surfaces of the wiping sheet 1 function as a wiping surface, the back surface 1b side does not have to be flat, and the back surface layer 3 does not necessarily have a concavo-convex shape by the plurality of flange portions 81 and the groove portions 82. May be.

<When wiping sheet is used in dry condition>
FIG. 6 is a perspective view of a makeup pad 10 including a cushion layer (filling) 20 formed from an absorbent fiber and a covering sheet 21 that covers the cushion layer 20 and is based on the wiping sheet 1. These are sectional drawings which follow the VII-VII line of FIG. The covering sheet 21 is located on the skin contact surface, the non-skin contact surface, and the skin contact surface side, and corresponds to the outer layer 24 corresponding to the surface layer 2 of the wiping sheet 1 and the back surface layer 3. The inner layer 23.

  On the skin contact surface of the makeup pad 10, a liquid such as a cosmetic liquid impregnated from the skin contact surface is formed by the low hygroscopic filaments 4 in the outer layer 24 having an irregular arc and spreading in a mesh shape. However, a substantially uniform liquid film is formed which spreads uniformly on the skin contact surface of the makeup pad 10. Therefore, when the makeup pad 10 is impregnated with a liquid cleansing agent to wipe off the dirt on the skin, the liquid cleansing agent can be uniformly permeated into the skin to wipe off the dirt on the entire skin. In addition, when the cosmetic pad 10 impregnated with a relatively large amount of cosmetic liquid is used as a cosmetic pack sheet, the cosmetic liquid penetrates the entire skin contact surface evenly, and thus has good stickiness to the skin. Can be demonstrated.

  In addition, since a plurality of relatively small fiber gaps are formed by arranging the ultrafine filaments 4 in the surface layer 2 in a mesh pattern, compared to a case where fibers are gathered so densely that the fiber gaps are not formed. As compared with the case where the fiber gap is relatively large or a plurality of apertures 80 are formed as in the back surface layer 3, the liquid retaining property of the liquid such as the cosmetic liquid in the surface layer 2 is excellent. (Liquid residue) is good. That is, since the filament 4 is composed of hygroscopic fibers having a relatively low water absorption, the liquid enters the fiber gap without being absorbed by the fibers, and is stably applied to the surface layer 2 for a certain time by the surface tension. Retained. Therefore, even when the coating sheet 21 is impregnated with a relatively small amount of cosmetic liquid, the cosmetic liquid is not instantaneously absorbed by the inner layer 23 or the cushion layer 20, and the outer layer 24 is in a wet state for a certain time. Therefore, in the surface layer 2, the cosmetic liquid does not penetrate into the inside of the skin layer until it is impregnated with the cosmetic liquid and applied to the face, and the skin contact surface does not become dry. In addition, the filament 4 in the surface layer 2 forms an irregular arc and spreads in a mesh shape so as to straddle the opening 80 of the back surface layer 3, and a mesh is also formed above the opening 80. As a result, the cosmetic liquid impregnated in the surface layer 2 does not move directly from the opening 80 to the cushion layer 20, and the excellent liquid remaining property as described above can be exhibited.

When the wiping sheet 1 is formed only from the ultrafine filament 4, the wiping property is excellent, but the squeeze is weak and the sheet strength may be low. However, the surface layer 2 has a larger average fiber diameter than the filament 4. By being integrated with the back surface layer 3 formed from the staples 5, the wiping sheet 1 has an appropriate stiffness and sheet strength. Therefore, the wiping sheet 1 can be prevented from being largely deformed in the dry state and the wet state, and the surface layer 2 can be swung, and a stable wiping operation can be performed. In addition, since the back surface layer 3 has a concavo-convex shape formed from a plurality of flange portions 81 and groove portions 82, the bending rigidity in the sheet strength of the wiping sheet 1 is improved as compared with the case where it is flat, The impregnated liquid can be moved quickly.

As described above, when the wiping sheet 1 is used for the covering sheet 21 of the makeup pad 10, the filament 4 spreads in a mesh shape on the skin contact surface, so that dirt and the like that have entered the pores can be scraped off. A liquid film that uniformly spreads when the cosmetic liquid is impregnated from the contact surface side is formed, and the skin can be wiped off evenly. In addition, since the inner layer 23 has a concavo-convex structure including a plurality of flange portions 81 and groove portions 82, a moderate scouring strength is imparted and the wiping operation is stably performed, and the cosmetic liquid that has moved to the inner layer 23, etc. Can be diffused along the groove 82 throughout the sheet, and can be quickly absorbed by the cushion layer 20 through the plurality of apertures 80.

<When using in wet condition>
8A is a perspective view of a container 91 for refilling a wet sheet (wet tissue) 90 using the wiping sheet 1 as a base material, and FIG. 8B is a plurality of wet sheets 90 accommodated in the container 91. It is a typical partial side view of the laminated body which is in a lamination | stacking state.

  Referring to FIG. 8A, the container 91 has a take-out port 93 that can be opened and closed, and is accommodated as a laminate in which wet sheets 90 folded in a Z-shape and an inverted Z-shape are alternately overlapped. In the wet sheet 90, a part of the wet sheet 90 a located at the uppermost part of the laminated body protrudes from the take-out port 93. When the protruding portion of the wet sheet 90 a is pulled up, the wet sheet 90 a is separated from the overlapping wet sheet 90 b and pulled out of the container 91, and a part of the wet sheet 92 b protrudes from the takeout port 93.

  In the wet sheet 90 accommodated in such a manner, as with the decorative pad 10, the wiper property is excellent due to the network structure of the filaments 4 in the surface layer 2, and there is an appropriate strength and shape retention by the back surface layer 3. The wiping operation can be performed stably. Further, the wet sheet 90 can be stored in the container 91 in a state where a predetermined amount of wet components such as water and alcohol are held in advance because the back layer 3 is mainly composed of water-absorbing staples 5 such as rayon. In addition, since a plurality of apertures 80 are provided, the air permeability in the thickness direction is excellent, so that no air pool is generated between the wet sheets 90 that overlap in a wet state.

Referring to FIG. 8B, in the laminated body, in the overlapping wet sheet 90 folded into the Z-shape and the inverted Z-shape, the back surface layer 3 of the wet sheet 90a to be pulled out and the wet sheet to be pulled out next. The back surface layer 3 of 90b is opposed to and in contact with each other. When the back surface layer 3 (the back surface 1b) is flat, when the wet sheet 90 is pulled out, the wet layer 90a to be pulled out and the wet layer to be pulled out next in the portion where the back surface layer 3 comes into contact with each other. When the back surface layer 3 of the sheet 90b slides, there is a possibility that a part of the wet sheet 90b cannot be protruded from the take-out port 93 to the extent that it can be easily gripped. According to the wet sheet 90 made of the wiping sheet 1 according to the present embodiment, the back surface 1b is not smooth due to the formation of the plurality of apertures 80 in the back surface layer 3, so the wet sheet 90a to be pulled out On the other hand, the wet sheet 90b to be pulled out next is caught, and a part of the wet sheet 90b can be reliably protruded from the take-out port 93.

The front surface layer 2 and / or the back surface layer 3 in the wiping sheet 1 of the present invention may be formed of a plurality of layers instead of a single layer, and particularly when the use in a wet state is planned, the sheet strength is improved. Therefore, it may have a multilayer structure. In such a case, for example, the front surface layer 2 and the back surface layer 3 are each used as the back surface layer 3 between the fiber webs used as the front surface layer 2 in the illustrated example in addition to the two-layer structure. A single layer of the back surface layer 3 or the surface layer 2 may be laminated on the surface layer 2 / back surface layer 3 having a two-layer structure with a fiber web interposed therebetween.

In the present invention, since the surface layer 2 has a content of filaments 4 made of ultrafine fibers of about 60 to 100% by mass, the wiping sheet 1 is compared with the case where the content is less than about 60%. The number of points of contact with the object using the material increases, and the touch and adhesion are excellent. The filament 4 may be one in which a plurality of single fibers are aggregated in a bundle to form a fiber aggregate (tow) in addition to those dispersed in a single fiber state. When the filaments 4 are aggregated in a bundle, large bundles can be captured by the bundles, and the ultrafine filaments 4 forming the bundle enter the pores and scrape the small dirts and collect them inside the bundle. Therefore, the wiping property is improved.

With reference to FIGS. 6 and 7, the configuration of the makeup pad 10 in which the wiping sheet 1 is used will be further described. The makeup pad 10 includes a first direction S and a second direction R that intersect each other, and a first surface 11. And the second surface 12 located on the opposite side, both side edges 13 and 14 extending in the first direction S, both end edges 15 and 16 extending in the second direction R, and the first ends separated from each other in the first direction S. A first end portion 17 and a second end portion 18; and an intermediate portion 19 located between the first and second end portions 17 and 18. In the intermediate portion 19, the width in the second direction R is constant, the first and second end portions 17 and 18, respectively, on both sides as the dimension in the second direction R becomes smaller toward the edge 15, 16 The edges 13 and 14 are inclined. The covering sheet 21 is overlapped so as to wrap the cushion layer 20, and in order to maintain such a stacked state, the stacked portions at the joint portions 45 and 46 along both side edges are joined to each other. By maintaining the laminated state of the covering sheet 21, an openable / closable pocket 50 having an opening edge 51 extending in the second direction R is formed between the joint portions 45 and 46. The dimension L1 of the decorative pad 10 in the first direction S is about 45 to 65 mm, the dimension in the second direction R is about 65 to 85 mm, and the dimension of the intermediate portion 19 in the first direction S is the first and second ends. It is larger than the dimension in the 1st direction S of the parts 17 and 18. FIG.

  In the decorative pad 10, the mass of the cushion layer 20 is preferably about 0.2 to 0.4 g. The cushion layer 20 preferably has a mass per unit area in the intermediate portion 19 smaller than that in the first and second end portions 17 and 18. In addition, the mass per unit area of the first and second end portions 17 and 18 of the cushion layer 20 can be substantially the same or different. In the present embodiment, the first and second end portions 17 are the same. , 18 are approximately equal in mass per unit area. Further, for example, by making the mass per unit area at the first end portion 17 of the cushion layer 20 larger than that at the second end portion 18, a finger can be inserted into the pocket 50 from the opening edge portion 51 and the makeup pad. When using 10, the softness | flexibility of the edge part (1st edge part 17) in the side which inserts a finger can be improved, and it can be made into the soft touch.

  The cushion layer 20 is a fiber assembly mainly composed of hydrophilic fibers, and hydrophobic fibers may be mixed in the fiber assembly as long as the required water absorption of the cushion layer 20 is not inhibited. Specifically, it contains about 80% by mass or more of hydrophilic fibers. As the hydrophilic fiber, for example, rayon fiber, cotton fiber, acrylic fiber or the like can be used. As the hydrophobic fiber, for example, a synthetic fiber formed of a synthetic resin such as polyethylene, polyester, or polypropylene, or a synthetic fiber composite fiber formed of these synthetic resins can be used. In the present embodiment, the cushion layer 20 is formed of a fiber assembly mainly composed of rayon fibers. When rayon fiber is used as the hydrophilic fiber, it is possible to increase water separation when impregnating the skin lotion and using cotton fiber.

  Further, when the fiber forming the outer layer 24 is the filament 4 and the fiber length is relatively large, for example, larger than the dimension in the first direction S and / or the second direction R of the makeup pad 10, There are no fiber end portions on the first and second surfaces 11, 12. When the outer layer 24 is formed of staples 5 having fiber end portions on the first and second surfaces 11 and 12, when using the makeup pad 10, the end portions may strike the skin and cause irritation. When using staples by using the filament 4 that is continuous on the first and second surfaces 11 and 12 so that the end portion does not exist except for the outer peripheral edge of the decorative pad 10. Compared with this, the touch can be improved. In the makeup pad 10 according to the present embodiment, the joint portions 44 are formed on the inner sides of the side edges 13 and 14 of the makeup pad 10, which is a cutting line of the covering sheet 21. The end portion of the filament 4 does not exist in the cosmetic liquid application region defined by the two edge portions 15 and 16, and a good touch can be obtained.

  When the inner layer 23 includes a hydrophobic thermoplastic fiber, the hygroscopicity / water absorption of the inner layer 23 decreases, so that the action of drawing the cosmetic liquid or the like held in the outer layer 24 is suppressed, and the skin contact surface side The liquid remaining property can be further improved. Further, when the covering sheets 21 laminated at the joining portions 45 and 46 are joined by embossing / debossing by heat or ultrasonic waves, preferably when joining while fusing, the inner layer 23 and the outer layer facing each other. If the inner layer 23 of 24 is a non-meltable rayon fiber, the bonding strength may be lowered. By including the thermoplastic fiber in the inner layer 23, the inner layer 23 and the outer layer 24 can be easily fused, the bonding strength at the bonding portion 44 is improved, and the portion can be prevented from peeling off during use. .

[Example]
Examples of the present invention will be specifically described below, but the present invention is not limited to the following examples.

Wiping sheet : thickness 0.25 mm, mass per unit area 30 g / m ²
Surface layer: thickness 0.09 mm, mass per unit area 10 g / m ² ,
Meltblown nonwoven fabric (nylon 6: 100% by mass),
Filament average fiber diameter 4μm
Back layer: thickness 0.16 mm, mass per unit area 20 g / m ² ,
Spunlace nonwoven fabric (staple: rayon; 80% by mass,
Heat-fusible fiber; 20% by mass),
Average fiber diameter of staple (rayon and heat-fusible fiber) 1
6μm

Wiping sheet : thickness 0.25 mm, mass per unit area 30 g / m ²
Surface layer: thickness 0.09 mm, mass per unit area 10 g / m ² ,
Meltblown nonwoven fabric (nylon 6: 100% by mass),
Filament average fiber diameter 4μm
Back layer: thickness 0.16 mm, mass per unit area 20 g / m ² ,
Rayon fiber (rayon: 100% by mass),
Staple (rayon) average fiber diameter 15μm

[Comparative Example 1]
Wipe sheet (single layer): thickness 0.27 mm, mass per unit area 30 g /
m ² ,
Meltblown nonwoven fabric (nylon 6: 100% by mass),
Filament average fiber diameter 4μm

[Comparative Example 2]
Wipe sheet (single layer): thickness 0.25 mm, mass per unit area 30 g /
m ² ,
Spunlace nonwoven fabric (cotton: 100% by mass),
Average fiber diameter 15μm

[Comparative Example 3]
Wipe sheet (single layer): thickness 0.25 mm, mass per unit area 30 g /
m ² ,
Spunlace nonwoven fabric (rayon: 100% by mass),
Average fiber diameter 15μm

  In addition to measuring the average surface friction coefficient (MIU), the average deviation of the surface friction coefficient (MMD), and the average deviation of the surface roughness (SMD) as surface characteristics for each example and comparative example, a wiping test and a sensory test were conducted. Carried out. The measurement results and test results are shown in Table 1. In addition, this measurement is generally known as a characteristic value representing the touch of the nonwoven fabric, and is a characteristic value in KES manufactured by Kato Tech Co., Ltd. (reference: texture evaluation standardization and analysis (second edition), author) Measured for Kawabata Toshio, July 10, 1980).

The measurement method for each measurement item shown in Table 1 and the evaluation criteria for each test item are as follows. The results of each test were evaluated as A (excellent), B (good), C (normal) , and D (bad).

<Measurement method of surface characteristics>
The measurement of the surface characteristics was carried out using KES-FB4 manufactured by Kato Tech Co., Ltd., using a sample of the 1.0 cm × 1.0 cm range in the cosmetic application region of each sample, and the surface of the sample was made of metal It was mounted on the test stand and measured. For the measurement of the surface roughness, a load of 10 gf was applied on the surface of the sample, and a contact terminal having a width of 0.5 cm in which a 0.5 mm diameter piano wire was wound in a coil shape was used. Moreover, in the measurement of surface friction, the contact surface of the contactor was crimped to the sample by applying a force of 50 gf to the contactor in which ten piano wires having a diameter of 0.5 mm were arranged. In the measurement of surface friction and surface roughness, the sample was moved 2 cm horizontally at a speed of 0.1 cm / sec, and a uniaxial tension of 20 gf / cm was applied to the sample. The characteristic value was measured for each of the first direction X and the second direction Y of each sample, and the average was obtained.

≪Evaluation criteria≫
1. Average surface friction coefficient (MIU) A: 0.25 or more B: 0.20 or more, less than 0.25 C: 0.15 or more, less than 0.20 D: Other

2. Mean deviation of surface friction coefficient (MMD)
A: 0.0080 or less B: Over 0.0080, 0.0090 or less C: Over 0.0090, 0.0100 or less D: Over 0.0100

3. Surface roughness average deviation (SMD) value [μm]
A: 4.0 or less B: More than 4.0, 4.5 or less C: More than 4.5, 5.0 or less D: More than 5.0

<Wipe test>
By using the wiping sheet of Comparative Example sheet 1 wiping the present invention, it was subjected to wiping test cosmetics (foundation). As a test apparatus, a friction wear measuring apparatus TL201Ts manufactured by Trinity Lab Co., Ltd. was used. In addition, the wiping sheet | seat and the wiping sheet | seat 1 of the comparative example which are samples were tested in the state which has not applied liquids, such as cosmetic liquid. First, 0.02 g of cosmetics was applied in a circular shape with a diameter of 13 mm on a surface of a rectangular slide glass having a width of 26 mm and a length of 90 mm, centering on a position 20 mm from the edge in the length direction, to obtain a test piece. . Next, the test piece after 40 minutes have passed after applying the cosmetics by sandwiching the wiping sheet 1 as a sample with a pad-dedicated jig (depth: 20 mm, width: 70 mm) of the test apparatus so that the surface 1a is an exposed surface. On the other hand, the end of the test piece was moved at a moving speed of 2.5 mm / s while applying a certain load to the dedicated jig (100 g load with respect to the area 5.2 cm ² of the wiping sheet 1 in contact with the test piece). The cosmetic product was wiped off while moving 60 mm from the edge. In this measurement, a foundation (for example, containing preservatives, sea surface active agents, ultraviolet absorbers, tar dyes, artificial fragrances, etc.) as widely used cosmetic products was used.

  Next, the surface of the test piece after wiping off the cosmetics is read with a scanner (GT-X750 manufactured by Seiko Epson Corporation), and then the image is read using image software (Adobe Photoshop Elements 3.0), and the Histgram Analysis software is used. A histogram processing was performed using the binarization processing. The value of the binarization treatment of the test piece before wiping off the cosmetic product was set to 100, the value of the binarization treatment of the test piece after wiping off was shown as a ratio, and the wiping rate was obtained. The number of samples in each example was N = 3, and the average value was calculated.

<Evaluation method>
A: Wiping rate 90% or more B: Wiping rate 80% or more, less than 90% C: Wiping rate 70% or more, less than 80% D: Wiping rate less than 70%

<Sensory evaluation>
Each wipe in the size of 12cm × 12cm, the wet sheet was prepared impregnated with 3 times the mass of the distilled water to the sheet dry mass, women 10 panelists were applied to the face at the wet sheet Foundation The “softness”, “smoothness”, and “wiping sensation” of the wet sheet when wiping off was evaluated in four stages.
1. Softness A: soft B: soft soft C: can't say either D: not soft 3. A feeling of slimness A: A feeling of slimness B: A feeling of slimness C: A feeling of slimness D: There is no feeling of slimness A feeling of wiping A: There is a feeling of wiping B: There is a feeling of wiping slightly C: Neither can be said D: There is no feeling of wiping

<Measurement results>
As shown in Table 1, on the surface 1a side of the wiping sheets 1 of Examples 1 and 2, the average surface friction coefficient (MIU) is 0.25 or more, and the average deviation (MMD) value of the surface friction coefficient is The average deviation (SMD) [unit: μm] of the surface roughness was 0.008 or less. On the other hand, the wipe sheet of Comparative Example 1 has MIU of 0.25 or less, MMD of 0.008 or less, and SMD of 5.0 or less. The wipe sheet of Comparative Example 2 has MIU of less than 0.20 and MMD. The wiping sheet of Comparative Example 3 had an MIU of less than 0.20, an MMD of more than 0.100, and an SMD of 5.0 or less. Further, in the wiping test, wipe Examples 1 and 2 of the wiping sheet 1 and Comparative Example 1, respectively wiping rate, at least 90%, a high wiping greater than 90% in the state of not applying a cosmetic solution Indicated. On the other hand, in the wiping sheets of Comparative Examples 2 and 3, the wiping rate was less than 80%.

From the results of such measurement and evaluation, the wiping sheets 1 of Examples 1 and 2 are relatively smooth on the surface 1a side, because the filament 4 has an irregular arc on the surface 1a side and spreads in a mesh shape. Thus, when a liquid such as a cosmetic liquid is supplied to the surface 1a side, the liquid can spread uniformly over the entire surface 1a to form a uniform liquid film. Further, since the wiping sheet 1 of Examples 1 and 2 includes the filament 4 made of ultrafine fibers, a plurality of small edge portions are formed on the surface 1a side, and has a relatively high frictional resistance. It has excellent properties and can be wiped off so as to scrape out fine dirt that has entered the pores.

Thus, the wiping sheet 1 of Examples 1 and 2 has a surface 1a formed of filaments 4 made of ultrafine fibers, is relatively smooth, and has a relatively high frictional resistance. In the sensory evaluation, the evaluation of “softness”, “smoothness”, and “wiping feeling” was “A”, and the sheet characteristics of the wiping sheet 1 were actually confirmed as the feeling of use. On the other hand, the wiping sheets of Comparative Examples 1 to 3 have a relatively uneven surface and relatively low frictional resistance, so that a uniform liquid film is formed as in Examples 1 and 2, or sufficient No brushing function was exhibited, and none of the sensory evaluation items had an evaluation of “A”.

As the material constituting the wiping sheet 1 according to the present invention, various known materials that are usually used in this type of article can be used without limitation in addition to the materials described in the specification. In the specification and claims, the terms “first”, “second”, and “third” are used to simply distinguish similar elements, positions, and the like.

The disclosure relating to the present invention described above can be organized into at least the following matters.
A first direction and a second direction intersecting the first direction; a surface layer mainly composed of hygroscopic filaments having an average fiber diameter of 10 μm or less; and a back layer mainly composed of staples having an average fiber diameter of more than 10 μm. In the wiping sheet having
In the surface layer, the filaments are irregularly arced and uniformly spread in a mesh shape, and the back surface layer is formed with a plurality of openings arranged in the first direction, and the filaments are formed in the openings. Straddling at least a part of

The present invention disclosed in the above paragraph 0063 can include at least the following embodiments.
(1) The back surface layer further includes a plurality of flange portions and a plurality of groove portions extending in the first direction, and the groove portions and the flange portions are alternately arranged in the second direction. A hole is formed in the groove.
(2) The density of the surface layer is 0.05 to 0.2 g / cm ³ , and the thickness dimension of the surface layer is 20 to 60% of the thickness dimension of the back surface layer.
(3) The wiping rate of the surface layer in the dry state is at least 80%.
(4) The average surface friction coefficient (MIU) of the surface is 0.25 or more, and the average deviation (SMD) of the surface roughness is 4.0 μm or less.
(5) The filament is nylon.
(6) The staple is a fiber having higher hygroscopicity than the filament.
(7) The staple is at least one of cellulosic fibers including rayon and cotton.
(8) The spunlace nonwoven fabric in which the front surface layer and the back surface layer are integrated by a hydroentanglement method.

1 Wiping sheet 2 Surface layer 3 Back surface layer 4 Filament 5 Staple 80 Opening hole 81 Ridge portion 82 Groove portion t2 Surface layer thickness dimension t3 Back surface layer thickness dimension X First direction Y Second direction

Claims (9)

A first direction and a second direction intersecting the first direction; a surface layer mainly composed of hygroscopic filaments having an average fiber diameter of 10 μm or less; and a back layer mainly composed of staples having an average fiber diameter of more than 10 μm. In the wiping sheet having
In the surface layer, the filaments are irregularly arced and uniformly spread in a mesh shape, and the back surface layer is formed with a plurality of openings arranged in the first direction, and the filaments are formed in the openings. The said wiping sheet | seat characterized by straddling at least one part of them. The back surface layer further includes a plurality of flange portions and a plurality of groove portions extending in the first direction, the groove portions and the flange portions are alternately arranged in the second direction, and the plurality of apertures are The wipe sheet of Claim 1 currently formed in the groove part. The density of the surface layer is 0.05 to 0.2 g / cm ³ , and the thickness dimension of the surface layer is 20 to 60% of the thickness dimension of the back surface layer. 2. The wiping sheet according to 2. The wiping sheet according to any one of claims 1 to 3, wherein a wiping rate of the surface layer in a dry state is at least 80%. The wipe sheet according to any one of claims 1 to 4, wherein an average surface friction coefficient (MIU) of the surface is 0.25 or more and an average deviation (SMD) of surface roughness is 4.0 µm or less. The wipe sheet according to any one of claims 1 to 5, wherein the filament is nylon. The wiping sheet according to claim 1, wherein the staple is a fiber having higher hygroscopicity than the filament. The wipe according to any one of claims 1 to 7, wherein the staple is at least one of cellulosic fibers including rayon and cotton. The wipe sheet according to any one of claims 1 to 8, wherein the front surface layer and the back surface layer are spunlace nonwoven fabrics integrated by a hydroentanglement method.

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