TW201332486A - Mask pack - Google Patents

Abstract

A mask pack impregnated with a liquid cosmetic preparation, being applied to a human skin surface, in particular a facial skin surface. The mask pack includes a nonwoven fabric layer and a nanofiber layer including a hydrophilic polymer, wherein said nanofiber layer is bonded to the nonwoven fabric layer.

Description

Mask packaging

The present invention relates to a facial mask package impregnated with a liquid cosmetic preparation for application to the surface of a human skin, particularly a facial skin surface.

Mask packaging is commonly used in the cosmetic field, especially to protect the skin from external stimuli, dryness, and the like. Conventionally, non-woven non-woven facial masks impregnated with liquid cosmetic preparations have been used for facial skin surface applications. Figure 1 shows a conventional non-woven facial mask package.

However, such non-woven facial masks are relatively thick (about 15 μm to 50 μm) and have a small surface area per volume, and thus can be easily separated from the facial skin surface even under a slight facial motion. In addition, the non-woven facial mask package exhibits a poor lasting effect of the liquid cosmetic preparation after adhering to the surface of the facial skin.

In this regard, a non-woven facial mask package coated with nanofibers has been proposed. Nanofibers have a larger surface area and a smaller thickness (less than about 1 μm) compared to non-woven fibers. Thus, a non-woven facial mask coated with nanofibers exhibits significantly improved skin adhesion compared to conventional non-woven facial mask packaging. For example, Japanese Patent Laid-Open Publication No. 2007-70347 discloses a non-woven fabric for skin adhesion and a facial mask package. This document discloses a non-fabric laminate for skin adhesion comprising a layer of nanofibers for use as an adhesive surface to the skin, and a non-woven layer. However, such non-woven mask packaging of coated nanofibers relies only on electrostatic forces for adhesion between the nanofibers and the non-woven fabric, and therefore, it is impregnated with a liquid cosmetic preparation. Layer separation (nanofiber delamination) may occur easily.

Therefore, it is necessary to develop a mask package that is improved in skin adhesion and lining of nanofibers.

It is an object of the present invention to provide a mask package that is improved in skin adhesion and lining of nanofibers.

To achieve the above object, the present invention provides a mask package comprising: a non-woven layer and a nanofiber layer comprising a hydrophilic polymer, wherein the nanofiber layer is bonded to the nonwoven fabric layer.

The mask package can exhibit good impregnation with a liquid cosmetic preparation and good skin adhesion due to the hydrophilic nanofiber layer, and when impregnated with a liquid cosmetic preparation, it can be tight due to the non-woven layer and the nanofiber layer. Adhesion, particularly by using an adhesive layer, significantly improves the delamination of nanofibers.

The above and other features and advantages of the present invention will become more apparent from the aspects of the appended claims.

The invention will be described in more detail below.

The facial mask package of the present invention comprises a non-woven layer and a nanofiber layer comprising a hydrophilic polymer, wherein the nanofiber layer is bonded to the nonwoven fabric layer.

The present inventors have found that when a nanofiber layer is formed on a spunlace nonwoven fabric which is widely used in the field of mask packaging to improve skin adhesion, the resulting mask is easily immersed in a liquid cosmetic preparation. Layering of nanofibers occurs. Looking for ways to prevent such nanofibers In the solution of the layer phenomenon, the inventors have found that when the adhesion between the non-woven layer and the nanofiber layer is formed, for example, by forming an adhesive layer on a non-woven fabric and subsequently performing nanofiber coating, the resulting mask packaging Significantly reduced nanofiber stratification and enhanced skin adhesion without skin irritation.

Figure 2 illustrates a facial mask package in accordance with one embodiment of the present invention. In Fig. 2, reference numeral 1 denotes a non-woven layer, reference numeral 2 denotes an adhesive layer, and reference numeral 3 denotes a nanofiber layer. These layers will be described in detail below.

Non-woven layer

In the present invention, the non-woven fabric layer is a mask packaging substrate impregnated with a liquid cosmetic preparation. The non-woven fabric layer is not particularly limited as long as it is made of a non-woven fabric commonly used in the art. In order to promote impregnation of the liquid cosmetic preparation, non-woven fabrics including hydrophilic fibers are preferred. The hydrophilic fiber may be at least one selected from the group consisting of snails, cotton, pulp, nylon, cellulose, and the like.

The non-woven layer may also include a polymer such as polyester (PET) to ensure easy handling characteristics, processability, and the like.

The composite nonwoven layer composed of hydrophilic fibers and polymers may be a non-woven layer comprising threads and PET. In this case, the weight ratio of the thread to the PET may be in the range of 5:5 to 9:1, more preferably 7:3 to 8:2.

In the non-fabric manufacturing process, the non-woven fabric layer may be a meltblown nonwoven fabric, a spunbonded nonwoven fabric, a spunlaced nonwoven fabric, or the like, but the invention is not limited thereto.

The term "non-woven" as used herein is a web comprising a plurality of randomly oriented fibers. Herein, the fibers may be staple fibers or continuous filaments.

The non-woven fabric layer may be present in an amount ranging from 96.5 wt% to 99 wt%, based on the total weight of the mask pack. The thickness of the non-woven layer is not limited System, but can range from 0.30 mm to 0.40 mm. The mass of the non-woven fabric layer per unit area is not particularly limited, but may range from 40 gsm to 60 gsm.

Nanofiber layer

In the present invention, a layer of nanofibers is used as an adhesive surface to the skin. The non-woven layer is present on the surface of the mask package opposite the skin adhesive surface, and if there is an adhesive layer, it is sandwiched between the nanofiber layer and the adhesive surface.

The nanofiber layer exhibits excellent skin adhesion due to the easy entry of the nanofiber into the pores of the skin, and can significantly enhance the retention of the liquid cosmetic preparation due to the nano-sized fibers.

The nanofiber layer includes a hydrophilic polymer because the hydrophilic polymer is suitable for use as an adhesive surface to the skin. The hydrophilic polymer usable herein may be selected from the group consisting of polyacrylonitrile (PAN), hydrophilic polyurethane (PU), polyvinyl alcohol (PVA), nylon (Nylon 6), and hydrophilic polydisperse. At least one of vinyl fluoride (PVDF), hydrophilic polyether oxime (PES), polyether quinone imine (PEI), and the like. The hydrophilic polymer is preferably polyacrylonitrile (PAN).

The nanofiber layer may further comprise a thermoplastic polyurethane (TPU) to enhance softness when adhered to the skin and to prevent damage to the nanofiber layer due to external friction or contact (eg, scratches or cracks) ). The polyurethane polymer can be a modified hydrophilic polymer. Polyurethane polymers can also be hydrophobic. Herein, the weight ratio of polyacrylonitrile to polyurethane may range from 6:4 to 9:1.

The content of the nanofiber layer can be 0.6 weight based on the total weight of the mask package. The amount is in the range of from 3% to 3% by weight, and the mass of the nanofiber layer per unit area may be in the range of 0.4 gsm to 2 gsm in terms of gas permeability. In order to ensure better skin adhesion during the use of the mask packaging and good penetration of the liquid cosmetic preparation into the skin, the pore size of the nanofiber layer can be in the range of 0.8 μm to 3 μm, and the diameter of a single nanofiber can be 100 nm. Up to 300 nm. The thickness of the nanofiber layer is not particularly limited, but may be in the range of 0.5 μm to 2 μm.

The nanofiber layer can be in the form of dispersed or coalesced nanofibers. The nanofiber layer is preferably in the form of a combination of nanofibers.

In order to bond the nanofibers together, the nanofiber layer of the present invention may further comprise a hot melt polyurethane (hot melt PU). The hot melt PU is an adhesive well known in the art which comprises a thermoplastic polyurethane resin as a main component and is a 100% solid adhesive which is free of water and an organic solvent. The hot melt PU may be composed only of a polyurethane resin, but is similar to a general-purpose hot melt adhesive, and may further include a wax, a tackifying resin, a plasticizer, and the like. The hot melt PU promotes fiber-fiber bonding of the nanofiber layer and, in addition, aids adhesion between the nanofiber layer and the non-woven layer. The hot melt PU can be used in an amount of from 5% by weight to 15% by weight based on the total weight of the composition forming the nanofiber layer.

In addition to the above components, the nanofiber layer may include additives (e.g., pigments) commonly used in the art as necessary, in an amount that does not adversely affect the effects of the present invention.

Adhesion between non-woven layer and nanofiber layer

In the present invention, the nanofiber layer is bonded to the non-woven layer. By using One or more of the group consisting of a free adhesive layer, a fusible film, a heat or an ultrasonic wave is selected for bonding between the non-woven layer and the nanofiber layer. For example, the nanofiber layer obtained by electrospinning or the like can be adhered to the non-woven layer by means of an adhesive, or alternatively, the nanofiber can be electrospun to the coating adhesive. On the fabric layer.

The mask of the present invention may comprise at least one additional layer interposed between the nonwoven layer and the nanofiber layer, which may be an adhesive layer. At least one adhesive can be used as the adhesive layer.

The adhesive layer useful herein can be made from an acrylic adhesive, a polyurethane adhesive, a polyester adhesive, a polyoxyxide adhesive, or a combination thereof. Acrylic adhesives, polyurethane adhesives and polyester adhesives are preferably used.

The adhesive can be used in a minimum amount that prevents lining of the nanofibers without skin irritation. The content of the adhesive layer may generally range from 0.05% by weight to 0.5% by weight based on the total weight of the mask package.

The adhesive layer can be formed on the non-woven layer using methods generally known in the art, such as coating processes, evaporation (deposition) processes, and the like.

Non-woven fabrics coated with nanofibers are generally known in the art for subsequent processing (calendering process) to prepare the mask package of the present invention.

3A through 3C illustrate a method of making a mask coating of coated nanofibers in accordance with one embodiment of the present invention. Referring to Figure 3A, a non-woven layer 1 is first formed. Subsequently, as shown in FIG. 3B, an adhesive is applied onto the non-woven fabric layer 1 to form an adhesive layer 2, and as shown in FIG. 3C, the nanofibers are electrospun to the non-woven fabric coated with the adhesive layer 2. Layer 1 to form nanofiber layer 3, thereby completing The mask packaging of the present invention.

The mask package of the present invention can be impregnated with a liquid cosmetic preparation. The liquid cosmetic preparation impregnated in the mask package of the present invention may contain a moisturizing component, a cleansing component, a whitening component, a UV blocking component or the like as an active ingredient, but the present invention is not limited thereto. Liquid cosmetic preparations may also contain any ingredients that are expected to perform a particular effect on the skin.

The amount of the liquid cosmetic preparation impregnated in the mask package is appropriately determined depending on the characteristics of the mask package (especially the retention characteristics of the cosmetic preparation). The liquid cosmetic preparation preferably is impregnated in an amount sufficient to ensure that a sufficient amount of the active ingredient is supplied to the skin at the time of use and that any inconvenience (e.g., liquid dripping) occurs.

The mask packaging of the present invention can be used in other applications as well as in facial applications. For example, a facial mask package of the present invention impregnated with a liquid cosmetic preparation containing a moisturizing component can be applied to the neck, elbow or heel.

The invention will be described more specifically hereinafter with reference to the following examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

Instance Example 1

First, a spunlace-PET spunlace network (60 gsm) including a mucus thread and PET (weight ratio 8:2) (Namyang Textile Co., Ltd.) was prepared as a non-woven fabric.

A polyurethane adhesive (0.3 g) was applied to the non-woven fabric to form a snail-PET water non-woven fabric coated with a polyurethane adhesive.

PAN (6.30 g), hydrophilic PU (3.15 g), hot melt PU (1.04 g) and pigment (0.01 g) in dimethylacetamide (89.5 g) by electrospinning process The solution is applied to the non-woven fabric to which the adhesive is applied, thereby completing the non-woven fabric of the coated nanofiber. At this time, the mass per unit area of the nanofiber layer was adjusted to 0.4 gsm, 0.8 gsm or 1.1 gsm.

The non-woven fabric coated with the nanofibers was cut, and the resulting non-woven fabric sample was folded twice and placed in a box for mask packaging. A liquid cosmetic preparation (22 g, HongSam (C&Tech)) was then incorporated into the box. The resulting package was sealed and stored at room temperature for 3 days, 7 days, and 15 days to prepare a desired mask packaging sample.

Example 2

The non-woven fabric sample obtained by the same procedure as in Example 1 except that the mass per unit area of the nanofibers was 0.3 gsm or 1.3 gsm was folded twice and placed in a box for mask packaging. A liquid cosmetic preparation (22 g, HongSam (C&Tech)) was then incorporated into the box. The resulting package was sealed and stored at room temperature for 30 minutes to prepare the desired mask packaging sample.

Example 3

The non-woven fabric sample obtained in the same procedure as in Example 1 was folded twice and placed in a box for mask packaging. A liquid cosmetic preparation (22 g, HongSam (C&Tech)) was then incorporated into the box. The resulting package was sealed and stored at room temperature for one day to prepare the desired mask packaging sample.

Comparative example 1

The non-woven fabric sample obtained in the same procedure as in Example 1 except that the polyurethane adhesive layer was not formed was folded twice and placed in a box for mask packaging. A liquid cosmetic preparation (22 g, HongSam (C&Tech)) was then incorporated into the box. The resulting package was sealed to prepare a mask packaging sample.

Evaluation Example 1 - Nanofiber Stratification Test

For the mask packaging samples prepared in Example 1 and Comparative Example 1, the occurrence of crystallization of the nanofibers was observed with the naked eye. The results are summarized in Table 1 below.

As presented in Table 1, in the mask package of the present invention, delamination of the nanofibers did not occur even after 15 days. Conversely, the masking of the mask without the polyurethane adhesive layer occurred after 20 minutes of nanofiber delamination.

Evaluation Example 2 - Skin Adhesion Test

The mask packaging sample prepared in Example 2 was applied to the skin surface of five persons for 30 minutes, and the degree of skin adhesion (flaking resistance) was evaluated. A conventional mask packaging sample containing no nanofibers was used as a control and evaluated. The results are summarized in Table 2 below.

X: bad

○: Good

◎: Excellent

(The above results are based on the average of five people)

As can be seen from the results of Table 2, the mask package of the present invention exhibits skin adhesion superior to conventional non-woven mask packages.

Evaluation Example 3 - Skin Stimulation Test

The mask packaging samples prepared in Example 3 were applied to the skin surface of four people for 30 minutes, and the presence or absence of skin irritation (e.g., itching, inflammation) was observed. The results are summarized in Table 3 below.

As can be seen from the results of Table 3, the mask packaging of the present invention is extremely safe for human skin.

1‧‧‧Non fabric layer

2‧‧‧Adhesive layer

3‧‧‧Nano fiber layer

Figure 1 shows a conventional non-woven facial mask package.

Figure 2 illustrates a facial mask package in accordance with one embodiment of the present invention.

3A through 3C illustrate a method of making a mask coating of coated nanofibers in accordance with one embodiment of the present invention. Figure 3A illustrates the formation of a nonwoven layer, Figure 3B illustrates the formation of an adhesive layer on the nonwoven layer, and Figure 3C illustrates the formation of a nanofiber layer on the non-woven layer of the applied adhesive.

1‧‧‧Non fabric layer

2‧‧‧Adhesive layer

3‧‧‧Nano fiber layer

Claims (15)

A facial mask package comprising: a non-woven layer; and a nanofiber layer comprising a hydrophilic polymer; wherein the nanofiber layer is bonded to the nonwoven layer. The mask package of claim 1, wherein the bonding between the nanofiber layer and the nonwoven fabric layer is performed by using one or more selected from the group consisting of an adhesive layer, a fusible film, heat, and ultrasonic waves. A mask package of claim 1 comprising at least one additional layer interposed between the nonwoven layer and the layer of nanofibers. The mask of claim 3, wherein the additional layer is an adhesive layer. The mask package of claim 4, wherein the adhesive layer comprises at least one adhesive. The mask package of claim 5, wherein the adhesive is selected from the group consisting of an acrylic adhesive, a polyurethane adhesive, a polyester adhesive, and a polyoxygen adhesive. The mask package of claim 1, wherein the nonwoven fabric layer comprises at least one hydrophilic fiber selected from the group consisting of snails, cotton, pulp, nylon, and cellulose. The mask package of claim 1, wherein the non-woven layer comprises snail fibers and polyester (PET) fibers. The mask package of claim 8, wherein the weight ratio of the threaded fibers to the PET fibers in the nonwoven layer is in the range of 5:5 to 9:1. The mask package of claim 1, wherein the hydrophilic layer in the nanofiber layer The polymer is selected from the group consisting of polyacrylonitrile (PAN), hydrophilic polyurethane (PU), polyvinyl alcohol (PVA), nylon, hydrophilic polyvinylidene fluoride (PVDF), hydrophilic polyether. At least one of a group consisting of bismuth (PES) and polyether quinone imine (PEI). The mask package of claim 1, wherein the nanofiber layer further comprises a thermoplastic polyurethane (TPU). The mask package of claim 5, wherein the non-woven fabric layer, the nanofiber layer and the adhesive layer are respectively present in an amount of from 96.5 wt% to 99 wt%, 0.05 wt% to 0.5 wt%, based on the total weight of the mask pack, and It is in the range of 0.6% by weight to 3% by weight. The mask package of claim 1, wherein the nanofiber layer further comprises a hot melt polyurethane (hot melt PU). The mask package of claim 13, wherein the hot melt PU is used in an amount of from 5% by weight to 15% by weight based on the total weight of the composition forming the nanofiber layer. The mask package of claim 1, which further comprises a liquid cosmetic preparation.