JP2021534073A - Skin care fabric - Google Patents

Abstract

A skin care fabric for medical, pharmaceutical or cosmetic applications in which the fibers have a diameter of less than 50 microns and contain at least 80% by weight of microfibers, which are a mixture of polyamide and polyester, and have been subjected to a splitting step by treatment with an alkaline solution. A skin care fabric in which each microfiber is divided to produce fine fibers that are tightly packed in a parallel structure with a capillary effect and a polishing effect. The fabric has a surface weight of less than 180 g / m2 and is filled with medical, pharmaceutical or cosmetic activators. This fabric is a warp knit fabric with a first surface on one side and a second surface on the other, the first surface which minimizes the fibers remaining on the skin during use and is the surface of the fabric. It is mechanically roughened, cut, fluffy but short-haired and dense to provide a further expanded fabric structure with water absorption of at least 4 times its weight. [Selection diagram] FIG. 11

Description

The present invention is a skin care fabric for medical, pharmaceutical or cosmetics having a diameter of less than 50 microns and containing at least 80% by weight of microfiber which is a mixture of polyamide and polyester, and is divided by treatment with an alkaline solution. Each microfiber is divided during the process to produce a densely packed microfiber with a parallel structure that has a capillary effect and a polishing effect, thus producing an active agent (active agent) for medical, pharmaceutical or cosmetic use. Regarding the skin care fabric to be filled.

Skin care fabrics are known for a variety of uses, especially for the face. They are usually provided in a sheet size that is practical to hold in one hand and are often folded into a box so that the user can pull out one individual sheet. Since these are generally made of cellulose, they are very inexpensive. Unfortunately, these fabrics tend to tear easily when used in damp conditions, making them unsuitable for damp environments.

The fabric described in Patent Document 1 is a disposable skin care tissue made of microfibers filled with an activator and having a polishing effect, which is intended for disposable wet use, and the application is made for all purposes. Incorporated herein by reference. The textile surface is subjected to the splitting process. The tissue has a grid structure and intermediate spaces or gaps in the grid. The effect of this grid was to create space for the split microfiber filament to be filled with the activator.

Upon use, the fabric is usually wetted with water, the activator in the fabric is carried and the activator is delivered to the skin. Depending on the activator, they can then cleanse, disinfect, apply a cream or moisturizer to the skin, or provide medicinal products for the medical treatment of the skin area.

U.S. Patent Application Publication No. 2010-0322989

An object of the present invention is to provide the skin care fabric mentioned at the beginning, which has improved water absorption. Water absorption has been found to be an important measure of the usefulness of such fabrics. For example, when washing a face, it is important that the fabric is sufficiently wet but does not drip. Also, in medical applications, it is important that droplets and splits do not contaminate the surroundings. On the other hand, the fabric itself should not be too heavy, it should be able to be gripped firmly, and the surface should feel soft. Moreover, it is not desirable for loose fibers of the fabric to remain on the skin.

The skin care fabric according to the present invention is a warp knit fabric having a surface weight of less than ^{180 g / m 2.} The skin care fabric according to the present invention has a first surface and a second surface, and the second surface is preferably formed on the side of the fabric opposite to the side of the fabric on which the first surface is formed. In addition, the first surface is mechanically configured to provide a further expanded fabric structure with as little fiber remaining on the skin during use and water absorption at least four times the surface weight of the fabric. It is roughened and cut, resulting in fluffy yet short hair and fineness. The second surface is not mechanically roughened. However, the warp knitting structure on the second surface allows the user to hold it firmly while using the fabric. The fabric according to the invention is disposable and can be recycled.

Upon use, the fabric is usually wetted with water, which carries the activator in the fabric and delivers the activator to the skin. Depending on the activator, they can then cleanse, disinfect, apply a cream or moisturizer to the skin, and / or provide a drug to the skin. It can be used not only on normal skin but also on skin with scars and scars.

According to one aspect of the invention, the fabric has a relatively low weight relative to the surface area, which is also an economic advantage for disposable fabrics as it reduces the use of raw materials.

The structure of the fabric has been found to be important in terms of its ability to store fluid. Therefore, the fabric according to the embodiment of the present invention is a warp knitted fabric. Warp knitting is a type of knitting in which the yarn travels in a zigzag along the length of the fabric, that is, it follows an adjacent row of knitting rather than a single step. For comparison, the method of knitting across the width of the fabric is called weft knitting.

In warp knitting, the number of individual strands (“ends”) of the knitting yarn must be equal to the number of stitches in one step, so warp knitting is most often done by machine rather than by hand. All warp fabrics are stretchable and much more flexible than woven fabrics. After cutting the woven fabric, the warp or weft may loosen, which is not desired by the user of the skin fabric. This cannot happen with warp fabrics. Moreover, in contrast to regular knitted fabrics, warp knitted fabrics are resistant to transmission. Due to the relatively complex product with many loops, the warp knitted fabric is relatively thick and the fabric itself is very dense. These structural features facilitate the storage of water inside the fabric and reduce the dripping of liquid from the fabric. Therefore, it has been found that the currently preferred fabric for the above use is a warp knit fabric.

The warp knitted fabric is subjected to a splitting step of splitting the microfiber into a large number of filaments. This step can increase the surface area of the fabric and the increased surface area can increase the amount of activator bound to the fabric. Further, due to the capillary effect, more water is retained in the gaps between the fine filament members. The polishing effect of the fabric is due to the relatively sharp edges of the filament, which has a triangular cross section. Due to the polishing effect, dry cells of the skin can be easily removed with the help of large amounts of water to cleanse the skin.

The mechanically roughened and cut surface of the first surface of the fabric further increases the surface area of the fibers. The cut eliminates short ends and defines a flat surface. Preferably, the roughened and cut surface is then compressed and / or shrink-proofed to become more compact and prevent the filament fibers from loosening and adhering to the skin during use. In addition, the water absorption is best if the fabric is dense enough to provide a large amount of clearance to form the capillary gap. Nevertheless, this first surface remains fluffy.

In some embodiments, the second surface can be treated in the same manner as the first surface, but it is preferred that the second surface remains in its original state and is not roughened or cut. The second surface is a slightly glossy surface that is suitable for the user to grip firmly, while the first surface resembles flannel and has a matte appearance and gives the user a soft feel.

In presently preferred embodiments, the fabric according to the invention comprises, in addition to microfibers, pure polyamide fibers much finer than microfibers. Since the polyamide fiber is not affected by the dividing process, it has the advantage of holding the warp knitted fabric together after the dividing process.

Further, in the currently preferred embodiment, the activator is encapsulated in liposomes. This is an advantage for the delivery of medicines and drugs. Liposomes are complex structures made of phospholipids and may contain small amounts of other molecules. Liposomes can vary in size from a low micrometer range to tens of micrometers, but monolayer liposomes are usually relatively low to allow surface attachment and accumulation in the lesion area for the treatment of disease. It is in the size range.

Further, currently preferred embodiments will be described below.

Aspects and advantages of the invention are described in the description of the present specification, or are apparent from the description, or can be known through the implementation of embodiments of the present invention. Those skilled in the art will better understand the features and aspects of such embodiments and other embodiments by reviewing the specification. Complete and possible disclosure of the invention, including its best embodiments, to those of skill in the art will be described in more detail herein, including with reference to the accompanying drawings.

A photograph of the second surface of the fabric of the present invention before division is shown at a magnification of 41 times the actual size. A photograph of the first surface of the fabric of the present invention before division is shown at a magnification of 41 times the actual size. FIG. 3 shows a photograph of the second surface of the fabric of the invention, after splitting, mechanically roughened and cut, before filling with the activator, at a magnification of 41x the actual size. FIG. 3 shows a photograph of the first surface of the fabric of the present invention, which has been split, mechanically roughened and cut at a magnification of 41 times the actual size, before filling with the activator. A photograph of the second surface of the finished fabric of the present invention at a magnification of 41 times the actual size is shown. A photograph of the first surface of the finished fabric of the present invention at a magnification of 41 times the actual size is shown. A photograph of the cut surface of the fiber of the fabric of the present invention before division is shown at a magnification of 1500 times the actual size. A photograph of the cut surface of the fiber of the finished fabric of the present invention is shown at a magnification of 1500 times the actual size. A photograph of the edge diagram of the finished fabric according to the present invention at a magnification of 100 times the actual size is shown. A photograph of the edge diagram of the finished fabric according to the present invention at a magnification of 75 times the actual size is shown. FIG. 10 shows an enlarged view of a cross section surrounded by a square in the photograph of FIG. 10 at a magnification of 150 times the actual size. FIG. 11 shows an enlarged view of a cross section surrounded by a square in the photograph of FIG. 11 at a magnification of 680 times the actual size.

Next, exemplary embodiments of the invention are referred to in detail, one or more examples of which are shown in the accompanying drawings. In the detailed description, the numerical display is used to refer to the features of the drawing. Similar or similar indications in the drawings and description are used to refer to similar or similar parts of the embodiments of the present invention.

Each example is provided for illustration purposes and is not intended to limit the invention. In fact, it will be apparent to those skilled in the art that modifications and modifications can be made to the invention without departing from the scope or spirit of the invention. For example, the features exemplified or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Accordingly, the invention is intended to cover modifications and modifications such that are within the scope of the appended claims and their equivalents.

It is to be understood that the scope and limitations referred to herein include the limitations themselves and include all subranges within the defined limitations, unless otherwise stated. For example, the range 100-200 includes all possible sub-ranges, examples of which are 100-150, 170-190, 153-162, 145.3-149.6, and 187-200. Further, the limitation of up to 7 includes a limitation of up to 5, up to 3, and up to 4.5, and all subranges within this limitation, such as about 0-5, including 0 and 5, and so on. 5.2 to 7 including 5.2 and 7 are included.

FIG. 1 is a medical, pharmaceutical or cosmetic skin care fabric having a diameter of less than 50 microns and containing at least 80% by weight of microfiber 3 which is a mixture of polyamide and polyester, wherein the fabric is 180 g / g. Shown is an embodiment of surface 2 of a skin care fabric having a surface weight of less than m2 and the fabric being a warp knit fabric. FIG. 2 shows an embodiment of the first surface 1 of the embodiment of the skin care fabric shown in FIG. However, in FIGS. 1 and 2, the fabric is shown in the raw and untreated state.

3 and 4 show the same fabrics as in FIGS. 1 and 2, but the fabrics shown in FIGS. 3 and 4 are further subjected to a splitting step by alkaline solution treatment and each micro shown in FIG. The fibers 3 are split to produce fine fibers or filaments 5 (FIG. 4) that are tightly packed in a parallel structure to form gaps with a capillary effect, which produces a polishing effect when in contact with the user's skin. The first surface 1 shown in FIG. 4 has loose fibers from the fabric to provide a further enlarged fabric structure and to minimize the amount of fibers adhering to the skin during and immediately after use. It is mechanically roughened, cut, fluffy but short-haired and dense to reduce the performance of the falling fabric. The water absorption of the obtained fabric shown in FIG. 4 is at least 4 times its surface weight.

5 and 6 show the same fabrics as FIGS. 3 and 4, but the fabrics shown in FIGS. 5 and 6 are indistinguishable to the naked eye in FIGS. 5 and 6, but are medical and pharmaceutical. Further filled with an active agent for use or cosmetics. Preferably, the second surface 2 shown in FIG. 5 is not roughened and therefore can be firmly and easily gripped by the user. Further, according to a preferred embodiment, the fabrics shown in FIGS. 5 and 6 are further compressed and / or shrink-proofed to be more compact.

As an example, the microfiber may contain 40% by weight polyamide and 60% by weight polyester, respectively, at +/- 5%. In addition, the microfibers can preferably weigh in the range of about 150-200 dtex.

According to the photographs shown in all figures of the skin care fabric, the fabric contains, in addition to the microfibers 3, a pure polyamide fiber 4 which may have a weight in the range of about 38-55 dtex. The pure polyamide fiber 4 does not change after the splitting step. Pure polyamide fibers 4 can be easily identified in the figure.

The currently preferred fabric according to the invention is to have an average pile height in the range of about 10% to 60%, preferably about 25% to 55% of the total thickness of the fabric on the fluffy first surface 1. Found. Also, the warp knit fabric vest has a stitch count in the range of about 16-20 stitches per centimeter.

In some embodiments, the activator is preferably encapsulated in liposomes. Preferably, the activator is a particle having a diameter in the range of about 20-130 nanometers.

The fabric, the active agent in the range of about 5g~20g per square meter of fabric, preferably can be filled with the active agent in the range of about ^{9g / m 2 ~15g / m 2} . Embodiments of individual sheets of fabric, preferably, about 100～300Cm ^2, may preferably have an area of about 190~220cm ^2.

7 and 8 are enlarged views of the fibers present in the fabric according to FIGS. 1 and 2 (FIG. 7) and the fibers present in the fabric according to FIGS. 5 and 6 (FIG. 8). Comparing the state of the fabric at the various stages shown in these figures, it can be seen that the microfiber 3 builds a string before splitting and is separated into a single filament fiber 5 after splitting. Further, it can be seen that the polyamide fiber 4 is not damaged.

9-12 show edge views (as seen by transverse cutting of the sheet) of the finished fabric according to the invention with different degrees of magnification. In FIGS. 9 and 10, the polyamide fiber 4 that holds the fabric together even after mechanical treatment is present near the second surface 2, and the first surface 1 has the filament 5 and is fluffy.

As shown by the rectangles shown in FIGS. 10 and 11, each of FIGS. 11 and 12 shows a further enlargement of the cross section obtained from the preceding preceding FIGS. 10 and 11, respectively. The polyamide fiber 4 can be easily distinguished and distinguished from the filament fiber 5 of the divided microfiber 3.

The fabric embodiments according to the invention show good results in water absorption tests and are preferred for all types of skin applications including facial, medical, pharmaceutical and cosmetic.

1 1st surface 2 2nd surface 3 Microfiber 4 Polyamide fiber 5 Filament of microfiber after division

Claims (15)

A medical, pharmaceutical or cosmetic skin care fabric having a diameter of less than 50 microns and containing at least 80% by weight of microfibers, which is a mixture of polyamide and polyester, said fabric being a splitting step by treatment with an alkaline solution. Each microfiber is divided into fine fibers that are densely packed in a parallel structure having a capillary effect and a polishing effect, and the fabric has a surface weight of less than 180 g / m 2 and the fabric has a surface weight of less than ^{180 g / m 2.} Is filled with a medical, pharmaceutical or cosmetic activator, the fabric being a warp knit fabric with a first surface and a second surface to minimize the amount of fibers left on the skin during use. The first surface is mechanically roughened, cut, fluffy but short to provide a further expanded fabric structure with at least four times the surface weight of the fabric. A skin care fabric that is fine with hair. The skin care fabric according to claim 1, wherein the second surface is not roughened and therefore can be firmly gripped. The skin care fabric according to claim 1 or 2, wherein the fabric is shrink-proofed to be more compact. The skin care fabric according to any one of claims 1 to 3, wherein the microfiber contains 40% by weight polyamide and 60% by weight polyester at +/- 5%, respectively. The skin care fabric according to any one of claims 1 to 4, wherein the microfiber has a weight of 150 to 200 dtex. The skin care fabric of any one of claims 1-5, wherein in addition to the microfibers, the fabric comprises pure polyamide fibers having a weight of 38-55 dtex. The skin care fabric according to any one of claims 1 to 6, wherein the height of the pile is an average of 10% to 60% of the total thickness of the fabric. The skin care fabric according to any one of claims 1 to 7, wherein the height of the pile is an average of 25% to 55% of the total thickness of the fabric. The skin care fabric according to any one of claims 1 to 8, wherein the warp knit fabric has a stitch number of about 16 to 20 stitches per centimeter. The skin care fabric according to any one of claims 1 to 9, wherein the activator is encapsulated in liposomes. The skin care fabric according to any one of claims 1 to 10, wherein the activator is a particle having a diameter of 20 to 130 nanometers. The skin care fabric according to any one of claims 1 to 11, wherein the fabric is filled with about 5 g to 20 g of an activator per square meter of the fabric. The skin care fabric according to any one of claims 1 to 12, wherein the fabric is filled with about 9 g to 15 g of an activator per square meter of the fabric. The skin care fabric according to any one of claims 1 to 13, wherein the fabric has ^{an area of about 100 to 300 cm 2.} The skin care fabric according to any one of claims 1 to 14, wherein the fabric has ^{an area of about 190 to 220 cm 2.}

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