JP2006082263A - Liquid-like substance supply base material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid-like substance supply base material capable of absorbing and holding a proper amount of a liquid-like substance corresponding to a use purpose, preventing the outflow of the fragments of a short fiber aggregate to the outside and not becoming sticky, having a good use feeling and improved in the transfer properties of cosmetics or the like to the skin at the time of use when the liquid-like substance is cosmetics or a chemical liquid. <P>SOLUTION: The liquid-like substance supply base material 1 is equipped with the short fiber aggregate 2 containing a water absorbable fiber comprising a high-molecular polymer and impregnated with the liquid-like substance and water permeable nonwoven fabrics 3 and 4 which cover the whole surface of the short fiber aggregate 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a liquid material supply substrate impregnated with a liquid material, and more specifically, for example, a liquid material supply substrate impregnated with cosmetics, chemicals, etc. The present invention relates to a liquid supply base material having good transferability of cosmetics and chemicals to the skin.

  Wipe cleansing sheet to wipe off fingers and body dirt, cleansing sheet to wipe off make-up, skin care sheet to apply cosmetics with moisturizing effect and UV protection effect to skin, skin with cosmetics with whitening effect and moisturizing effect on skin Cosmetic sheets are used in various applications such as sheet packs that act for a long time.

  Among cosmetics, cosmetic sheets are often used for applying lotion, milky lotion, cream and the like to the skin. When applying lotion or the like to the face, cosmetic cotton is conventionally used as a cosmetic sheet. Since conventional cotton is exposed on the surface, the fuzz of the cosmetic cotton may give the user a discomfort. Further, when the cotton is exposed, a lot of skin lotion directly adheres to the fingers, which causes a problem that the fingers are sticky. In recent years, various attempts have been made to solve such problems.

  The following Patent Document 1 discloses a cosmetic bab composed of a pub core made of cotton cotton, and a non-woven fabric made of a blend of cotton and rayon blended with silk that coats the outer surface of the pub core. It is disclosed. This cosmetic pub has a high absorbency due to a blend of cotton and rayon. Further, the surface of cotton or the like is covered with a non-woven fabric, and in use, contact with a fuzzy portion of cotton or the like is prevented. Further, since silk is blended in the nonwoven fabric, the cosmetic pub is said to have a good touch.

On the other hand, Patent Document 2 described below discloses a cosmetic cotton having a multilayer structure in which a liquid-absorbing powdery substance is coated with a fiber web, and further, upper and lower surfaces of the fiber web are covered with a nonwoven fabric. This cosmetic cotton absorbs and retains skin lotion and the like with an inner layer made of a liquid-absorbing powdery substance. When the cosmetic cotton holding the skin lotion is applied to the face, the skin lotion in the inner layer permeates the fiber web and the nonwoven fabric and adheres to the skin. Therefore, there is little stickiness and the transition property to the skin of a lotion is good. Furthermore, since the outer layer is covered with a fiber web and a nonwoven fabric, it is said that the touch is good.
JP-A-11-206449 JP 2002-136336 A

  However, in the cosmetic pub described in Patent Document 1, the pub core is made of cotton cotton, but the cotton cotton sometimes has insufficient water absorption performance. Furthermore, if the cotton cotton has insufficient water absorption performance, the nonwoven fabric on the surface of the cosmetic pub may contain a lot of lotion. When the non-woven fabric contains a lot of lotion, a lot of cosmetic material directly adheres to fingers, which may cause stickiness.

  Furthermore, the cosmetic pub described in Patent Document 1 has a configuration in which a pub core is sandwiched between non-woven fabrics having substantially the same size. Therefore, since the end surface of the pub core made of cotton cotton is not covered with the nonwoven fabric, and the cotton cotton is exposed on the end surface of the pub core, the exposed end surface of the pub core Fine fibers may adhere to the face and fingers.

  On the other hand, in the cosmetic cotton described in Patent Document 2, a liquid-absorbing powdery substance is used as the inner layer. However, in the case of cosmetic cotton, the fiber web and the nonwoven fabric of the outer layer may be torn or opened at the outer edge joint portion due to repeated use. At this time, the powdery substance in the inner layer flows out to the outside. Since the spilled powdery substance diffuses in multiple directions, it may be troublesome to clear the diffused powdery substance.

  In view of the current state of the prior art described above, the present invention can absorb and retain an appropriate amount of liquid according to the purpose of use, and prevent fragments of short fiber assemblies from flowing out to the outside. In the case where the liquid material is a cosmetic or a chemical solution, it is to provide a liquid material supply base material that is not sticky when used and has a good feeling of use and a good transferability to the skin such as a cosmetic material.

  The liquid supply substrate according to the present invention contains water-absorbing fibers made of a high molecular polymer, and has short fiber aggregates impregnated with a liquid substance and water permeability that covers the entire surface of the short fiber aggregates. The non-woven fabric is provided.

  In a specific aspect of the liquid supply substrate according to the present invention, the nonwoven fabric is composed of the first and second nonwoven fabrics, the short fiber aggregate is sandwiched between the first and second nonwoven fabrics, The first and second non-woven fabrics are joined at the outer peripheral edge to cover the entire surface of the short fiber aggregate.

  In another specific aspect of the liquid supply substrate according to the present invention, the water-absorbing fiber is obtained by crosslinking the surface of the acrylic acid polymer partial sodium salt-based fiber and / or the acrylic acid polymer-based fiber, It is an acrylic acid polymer cross-linked fiber obtained by hydrolysis.

  In still another specific aspect of the liquid supply substrate according to the present invention, the short fiber aggregate can absorb water in an amount of 10 to 150 times its own weight.

  In still another specific aspect of the liquid supply substrate according to the present invention, the nonwoven fabric is a spunbond nonwoven fabric.

  In still another specific aspect of the liquid supply substrate according to the present invention, the liquid is a cosmetic and / or chemical solution, and is used for applying the cosmetic and / or chemical solution.

  In the liquid supply substrate according to the present invention, the impregnated liquid such as cosmetics and chemicals is absorbed and held by short fiber aggregates containing water-absorbing fibers made of a polymer. In use, the liquid material that is water-absorbed and held by the short fiber aggregate is supplied through the nonwoven fabric. Therefore, by adjusting the water permeability of the nonwoven fabric and the water absorption retention performance of the short fiber aggregate, the amount of liquid material that can be supplied from the liquid material supply base can be controlled.

  In the above liquid supply substrate, the liquid material is mainly held by the short fiber aggregate having higher water absorption retention performance than the non-woven fabric. Is excellent.

  In the liquid supply substrate according to the present invention, since the entire surface of the short fiber aggregate is covered with the nonwoven fabric, even if the short fiber aggregate is impregnated with the liquid substance, the short fiber aggregate is caused by fiber fragments or alteration. Gel substance does not flow out. Further, even when the nonwoven fabric is torn or opened at the outer peripheral edge due to misuse or repeated use, the liquid material supply base material according to the present invention uses a fibrous short fiber aggregate, The body never spreads outside.

  In the present invention, when an acrylic acid polymer cross-linked fiber is used as the water-absorbing fiber, the water-absorbing retention performance of the liquid material supply base can be increased or increased over a wide range because it has a higher water absorption retention performance. Water absorption retention performance can be controlled. Moreover, when mixed with other fibers and used, it is easy to adjust the water absorption retention performance of the liquid material supply substrate in a wider range.

  In the present invention, when the amount of the short fiber aggregate that can absorb water is 10 to 150 times the dead weight, the amount of water supply holding performance of the liquid supply substrate and the amount of liquid that can be supplied depends on the purpose of use. Adjustment is easy.

  In the present invention, when the non-woven fabric is a spunbond non-woven fabric, the water permeability can be adjusted to an appropriate range, and the touch feeling when the liquid supply substrate is touched with a finger or applied to the face is improved. can do.

  In the liquid supply substrate according to the present invention, the water permeability of the nonwoven fabric and the water absorption retention performance of the short fiber aggregate can be controlled within appropriate ranges. Therefore, when the liquid material impregnated in the liquid material supply base material is a cosmetic or a chemical solution, the amount of the cosmetic material or the like transferred to the skin can be adjusted appropriately. Furthermore, since the entire surface of the short fiber aggregate is covered with the non-woven fabric, the surface fragments of the fibers do not adhere to fingers and the face, so that the feeling of use is excellent.

  Hereinafter, the present invention will be clarified by describing specific embodiments of the present invention with reference to the drawings.

  FIG. 1 is a front sectional view showing a liquid supply substrate 1 according to an embodiment of the present invention. The liquid material supply substrate 1 has a sheet-like short fiber assembly 2 containing water-absorbing fibers made of a polymer. The sheet-like short fiber assembly 2 is impregnated with a liquid material. The sheet-like short fiber assembly 2 is sandwiched between sheet-like nonwoven fabrics 3 and 4 slightly larger than the short fiber assembly 2. In the outer peripheral edge parts 3a and 4a of the nonwoven fabrics 3 and 4, the nonwoven fabrics 3 and 4 are bonded together by heat welding. Therefore, the entire surface of the short fiber assembly 2 is covered with the nonwoven fabrics 3 and 4.

  In the liquid supply substrate 1 according to the present invention, the liquid material impregnated such as cosmetics and chemicals is mainly water-absorbed and retained by the short fiber assembly 2 having higher water-absorption performance than the nonwoven fabrics 3 and 4. . Therefore, since the liquid material contained in the nonwoven fabrics 3 and 4 which are outer layers has decreased, even if it touches the liquid supply base material 1 with a finger | toe, for example, there is little stickiness and it is excellent in a usability | use_condition.

  When a liquid material such as cosmetics is applied to the skin, the liquid material supply substrate 1 impregnated with cosmetics or the like is lightly pressed against the face or the like, and the cosmetics etc. held by the short fiber aggregate 2 Is eluted. In this embodiment, since the permeation | transmission speed of the nonwoven fabrics 3 and 4 can be set moderately, it can set so that transferability to skin, such as cosmetics, may become the best.

  The liquid material impregnated in the liquid material supply base is not particularly limited, and examples thereof include cosmetics, chemicals, water, alcohol, etc., but the liquid material base is impregnated with cosmetics and / or chemicals. In this case, it is preferable that the transfer of cosmetics and chemicals to the skin can be set to be the best. In the present invention, the liquid material includes a pasty material.

  The water-absorbing fiber made of the above polymer is required to have a proper water-absorbing performance according to the purpose of use. Examples of water-absorbing fibers made of such a polymer include acrylic superabsorbent polymer fibers, thermoplastic fibers mixed with superabsorbent polymer powders, hydrolyzed acrylic fibers, or carboxyl methylated and crosslinked cellulose. Fiber, cross-linked copolymer fiber composed of carboxylic acid-containing monomer and hydroxyl group or amino group-containing monomer and carboxylic acid alkali metal salt-containing monomer, copolymer fiber of isobutylene and maleic anhydride, styrene or ethylene or isobutylene Copolymer fibers with maleic anhydride, crosslinked carboxymethyl cellulose and the like can be used depending on the intended use. These fibers may be used alone or in combination of two or more.

  When high absorption retention performance is required, acrylic superabsorbent polymer fibers are suitably used as the water absorbent fibers made of a polymer. The acrylic superabsorbent polymer fiber is obtained by crosslinking a polymer obtained by reacting an acrylic monomer and a monomer having a functional group capable of forming a crosslink with the acrylic monomer. Examples thereof include acrylic acid (AA), methacrylic acid, maleic acid, and alkali metal salts thereof. Moreover, as a monomer with which these are reacted, hydroxy monomers such as hydroxyethyl methacrylate (HEMA), hydroxypropyl methacrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, glyceryl monomethacrylate, glyceryl monoacrylate, and dimethylaminoethyl acrylate (AEA) And amino monomers such as diethylaminoethyl acrylate and diethylaminopropyl methacrylate.

  These monomers may be used alone or in combination of a plurality of types. However, it is preferable that the acrylic acid monomer and the functional group monomer have a functional group equivalent to or less than that of acrylic acid. And when making these react, in order to provide plasticity, other vinyl monomers, for example, vinyl acetate (VA), acrylonitrile, etc. can be mix | blended. However, the blending amount of the monomer for plasticization is desirably 30% by weight or less.

  As a suitable commercially available product of such a crosslinked acrylic acid fiber, an acrylic polymer obtained by subjecting the surface of the acrylic acid polymer partial sodium salt crosslinked fiber and / or acrylic acid polymer fiber to crosslinking treatment and hydrolysis A product name “BEL OASIS” manufactured by Kanebo Gosei Co., Ltd., which is an acid polymer cross-linked fiber, may be mentioned.

  Furthermore, Toyobo Co., Ltd. product name “Lanseal”, in which acrylic fiber is hydrolyzed by post-processing and the nitrile group of acrylonitrile near the surface is modified to acrylic acid or acrylamide group by hydrolysis, can be suitably used.

  The above-described Bel Oasis and Runseal have high absorption retention performance. In particular, in the case of Bel Oasis, it exhibits excellent water absorption performance that can absorb water up to 80 times its own weight. Further, Bel Oasis and Runseal have characteristics that they have a high water absorption rate, and the absorbed water hardly flows out due to vibration or pressure, etc., and is excellent in release properties depending on drying.

  As the short fiber aggregate 2, fibers other than the water-absorbing fibers made of the above-described polymer can be mixed and used. The water absorption retention performance of the short fiber aggregate 2 can be adjusted by changing the types of fibers other than the water absorbent fibers and the mixing ratio thereof. Although it does not specifically limit as a fiber used by mixing with the water absorbing fiber which consists of a high molecular polymer, All fibers, such as a synthetic fiber, a natural fiber, a regenerated fiber, can be used. Moreover, each function can also be provided by using functional fibers, such as a hollow fiber, a flame-retardant fiber, a deodorizing fiber, and an anti-mold fiber.

  As described above, by changing the type of water-absorbing fiber made of a polymer, the type of fiber used by mixing with the water-absorbing fiber, and the mixing ratio thereof, the amount of water that can be absorbed by the liquid supply substrate 1 is appropriately set. Can be adjusted. The amount of the short fiber aggregate 2 that can absorb water is adjusted to be in the range of 10 to 150 times, more preferably 10 to 80 times the own weight. If the amount capable of absorbing water is less than 10 times the own weight, the water absorption performance of the short fiber assembly 2 may not be sufficient. If the amount capable of absorbing water is more than 150 times the own weight, the short fiber assembly 2 The water absorption performance may be too high.

  As described above, since the nonwoven fabrics 3 and 4 cover the entire surface of the short fiber assembly 2, the nonwoven fabrics 3 and 4 are required to have water permeability. As the nonwoven fabrics 3 and 4, any conventionally known nonwoven fabric can be used. For example, a wet nonwoven fabric manufactured by a papermaking method, a thermal bond nonwoven fabric bonded with self-adhesive or adhesive fibers (air-through nonwoven fabric, air Raid non-woven fabric, heat roll bonded non-woven fabric), chemical bond non-woven fabric with fiber web bonded with adhesive, needle punched non-woven fabric with web knitted with special needle, spunlace non-woven fabric entangled with water jet And dry-type non-woven fabrics such as metro-blown non-woven fabrics using non-binding ultra-fine fibers, spun-bond non-woven fabrics bonded by spinning and bonded mainly by self-adhesion, and flash-spun non-woven fabrics. Among these, since the spunbonded nonwoven fabric is excellent in water permeability and touch feeling when touched with a finger or hitting the face, it can be suitably used.

  The material of the non-woven fabrics 3 and 4 is not particularly limited. For example, natural fibers such as pulp and cotton, or synthetic fibers such as rayon, acetate, polyester, polyethylene, polypropylene, polyurethane, nylon, and acrylic are used according to the purpose of use. Any material having transparency and excellent shape stability can be selected. Furthermore, a material excellent in contact feeling when the liquid supply substrate 1 is touched with a finger or applied to the face is preferably selected.

  The liquid material that is absorbed and retained by the short fiber assembly 2 is supplied through the nonwoven fabrics 3 and 4. Therefore, by selecting the material of the nonwoven fabrics 3 and 4 and adjusting the water permeability, the amount of liquid material that can be supplied from the liquid material supply substrate 1 can be adjusted.

  In the liquid supply substrate 1 of the present embodiment, the short fiber aggregate 2 swells when absorbing cosmetics or chemicals. In the short fiber aggregate 2 that has absorbed cosmetics or the like, fine fiber fragments cut on the surface may be formed, or the fibers may be altered to become a gel-like substance. In this embodiment, the above-mentioned fragments and gel-like substances do not flow out to the outside. Furthermore, even when the nonwoven fabrics 3 and 4 are torn due to misuse or repeated use, or when the outer peripheral edge portions 3a and 4a are opened, the liquid material supply base material 1 uses the fibrous short fiber aggregate 2. The short fiber aggregate 2 does not diffuse in multiple directions.

  In the present embodiment, the planar shape of the sheet of the sheet-like liquid supply substrate 1 is not particularly limited, and may be various shapes such as a square, a rectangle, a sphere, and a sector, depending on the purpose of use. For example, in the case where the liquid supply substrate 1 having a planar shape such as a square or a rectangle is used for a human body, a pointed corner may be cut into a rounded shape. By eliminating the pointed portion, even when the liquid supply substrate is used on the human body, it becomes difficult to damage the skin, and the skin is not stimulated by the pointed portion, so that the touch feeling is excellent.

  In this embodiment, although it was set as the sheet-like liquid supply base material 1, you may give thickness to the short fiber assembly 2 and the nonwoven fabrics 3 and 4, and it can be set as various shapes according to the intended purpose.

  In this embodiment, the two nonwoven fabrics 3 and 4 are bonded together to cover the entire surface of the short fiber assembly 2. For example, the short fiber assembly is put into a bag-shaped nonwoven fabric and the openings are bonded together. Also good. That is, it is only necessary that the entire surface of the short fiber aggregate is covered with the nonwoven fabric.

  In this embodiment, the nonwoven fabrics 3 and 4 are bonded together by heat welding, but other methods may be used. For example, it may be sewn using fibers or the like, or may be bonded using an adhesive or the like. However, when the liquid supply substrate is touched with fingers or directly against the face, it is necessary to improve the contact feeling even at the bonded portion, and it is not preferable to use a material that adversely affects the human body.

  The liquid supply substrate according to the present invention is used for the purpose of applying the above-mentioned cosmetics and chemicals to the face and skin, as well as a wiping sheet for wiping off dirt on fingers and body, a cleansing sheet for wiping makeup, a moisturizing effect, Skin care sheet to apply cosmetics with UV protection effect to skin, sheet pack that carries cosmetics with whitening effect and moisturizing effect and acts on skin for a long time, poultice used for treatment of back pain, shoulder stiffness, bruise, sprains, etc. It can be used for various purposes including medicinal sheets used for wounds, skin inflammation sites, etc., for cosmetics, pharmaceuticals or quasi drugs.

1 is a front sectional view showing a liquid supply substrate according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid substance supply base material 2 ... Short fiber aggregate 3 ... Nonwoven fabric 3a ... Outer peripheral edge part 4 ... Nonwoven fabric 4a ... Outer peripheral edge part

Claims (6)

  A short fiber aggregate containing water-absorbing fibers made of a polymer and impregnated with a liquid material, and a water-permeable nonwoven fabric covering the entire surface of the short fiber aggregate. Liquid material supply base material.   The nonwoven fabric is composed of first and second nonwoven fabrics, the short fiber aggregate is sandwiched between the first and second nonwoven fabrics, and the first and second nonwoven fabrics are joined at an outer peripheral edge. The liquid supply substrate according to claim 1, wherein the entire surface of the short fiber aggregate is covered.   The water-absorbing fiber is a cross-linked acrylic acid polymer fiber obtained by hydrolyzing the cross-linked surface of the acrylic acid polymer partial sodium salt fiber and / or acrylic acid polymer fiber. The liquid supply substrate according to claim 1 or 2, wherein   The liquid supply base material according to any one of claims 1 to 3, wherein an amount of the short fiber aggregate that can absorb water is 10 to 150 times its own weight.   The liquid supply base material of any one of Claims 1-4 whose said nonwoven fabric is a spun bond nonwoven fabric. The liquid supply substrate according to any one of claims 1 to 5, wherein the liquid is a cosmetic and / or a chemical, and is used for applying the cosmetic and / or the chemical.

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