KR20180107941A - The mask pack sheet - Google Patents

Abstract

A mask pack sheet of the present invention includes a nonwoven fabric which contains thermoplastic resin fibers having a nylon resin and a curcumin derivative, thereby improving the absorbency of a material itself constituting the mask pack sheet to a cosmetic composition, and improving the shape retention rate and durability of the mask pack sheet.

Description

The mask pack sheet

The present invention relates to a mask pack sheet.

The mask pack refers to a product which is formed by impregnating a support sheet with a liquid or gel cosmetic composition for skin health such as moisturizing the skin, removing the nephews, whitening, improving skin health, etc., in the field of cosmetics so as to contact the skin for a long time.

Here, the mask pack sheet used as the support of the mask pack is often made of a nonwoven fabric mainly made of natural fibers, synthetic fibers, or a mixture thereof.

Particularly, as the material used for the mask pack sheet, the main synthetic resin is a polypropylene fiber (PP fiber), a polyester fiber (PET fiber), a polyethylene fiber (PE fiber), a polyvinyl alcohol fiber (PVA fiber) (PLA fiber).

Patent Document No. 2011-0060525 discloses a technique for improving the absorbency by adding a hydrophilic additive in order to improve the absorbency while producing such a synthetic fiber as a meltblown nonwoven fabric made of microfine fiber. .

However, even if such a technique is used, the stretchability is weak due to the limitation of physical properties of the material itself constituting the synthetic fiber, and when it is made into a mask pack sheet and applied to the skin, it causes inconvenience in activity, The problem of being well separated from the skin is inevitable. In addition, the conventional material has a disadvantage in that the wettability to the cosmetic composition is weak.

Published Patent Application No. 10-2011-0060525

An object of the present invention is to provide a mask pack sheet in which the material itself constituting the mask pack sheet is improved in absorbency against the cosmetic composition, and shape retention and durability of the mask pack sheet are improved.

In addition, the present invention can include the skin health improving effect of the mask pack sheet itself by including a curcumin derivative, which is known to be very good for skin health, in the synthetic resin as the material of the mask pack sheet, It is desirable to provide a mask pack sheet capable of allowing the pack sheet to have a luxurious yellow color.

The mask pack sheet of the present invention may be a nonwoven fabric comprising a thermoplastic resin fiber including a nylon resin and a curcumin derivative.

At this time, the Curcumin derivative preferably contains 1,000 to 15,000 ppm of the thermoplastic resin fibers.

Herein, the Curcumin derivative means a compound including the compounds of the formulas (1) to (3), and may be derived from turmeric or a racemate.

≪ Formula 1 >

(2)

(3)

The nonwoven fabric of the mask pack sheet of the present invention is produced by the melt-brown process, and the thermoplastic resin fibers constituting the nonwoven fabric preferably have an average diameter of 0.5 to 10 mu m.

At this time, the thermoplastic elastic nonwoven fabric is manufactured by a melt-brown process, and has a unit weight of 30 to 60 g / m ² , a thickness of 0.15 to 0.3 탆, and a porosity of 60 to 90%.

The present invention provides a mask pack sheet in which the material itself constituting the mask pack sheet is improved in absorbency against the cosmetic composition, and shape retention and durability of the mask pack sheet are improved.

Further, the present invention can include the skin health improvement effect of the mask pack sheet itself by including a curcumin derivative known to be very good for skin health in the synthetic resin which is the material itself of the mask pack sheet, Thereby providing a mask pack sheet in which the mask pack sheet can have a luxurious yellow color.

The mask pack sheet of the present invention may be a nonwoven fabric comprising thermoplastic resin fibers containing nylon resin.

That is, when the synthetic resin contained in the composition for a mask pack sheet of the present invention is a nylon resin and is used as a masksheet in the form of a nonwoven fabric, it is excellent in mechanical properties and abrasion resistance and in wettability You can. Further, the antibacterial property of the material itself is excellent, so that contamination of the cosmetic composition can be prevented.

The nonwoven fabric constituting the mask pack sheet of the present invention is characterized in that the nonwoven fabric is produced using thermoplastic elastomer fibers including a curcumin derivative.

The curcumin derivative is a component mainly contained in turmeric or potassium. It is widely known as a spice and health food, and it is widely known that turmeric is used as a pack which is made by mixing turmeric powder with fluid such as oil and so on, have. By incorporating curcumin, which is a major component of turmeric or talc, into the composition for a mask pack sheet together with the thermoplastic elastomer resin composition, the mask pack sheet itself can have an excellent effect on skin health. In addition, The mask pack sheet composition of the present invention includes a curcumin derivative in addition to the thermoplastic elastomer resin, so that the mask pack sheet produced from the mask pack sheet composition of the present invention may cause a luxurious yellowish color.

At this time, the curcumin derivatives include 1,000 ppm or more of the thermoplastic elastomer fibers, so that the effect of expressing the content of curcumin can be excellently enhanced. When the content of curcumin is 15,000 ppm or less, It is possible to prevent the possibility of degrading the productivity by acting as an impurity, and the color of the final product can be expressed in yellow without being expressed in red.

Herein, the Curcumin derivative means a compound including the compounds of the formulas (1) to (3), and may be derived from turmeric or a racemate.

≪ Formula 1 >

(2)

(3)

Since the thermoplastic elastic nonwoven fabric of the mask pack sheet of the present invention is made of the melt-brown type and the thermoplastic elastic fibers constituting the nonwoven fabric are composed of microfine fibers with an average diameter of 0.5 to 10 탆, It is excellent, and it has the advantage of being soft and comfortable to wear.

At this time, the thermoplastic elastomer nonwoven fabric is produced by the melt-brown method, and has a porosity of 60 to 90% by weight in a unit weight of 30 to 60 g / m ² , a thickness of 0.15 to 0.3 탆, (Such as functional medicines) in the space of the mask pack, and the mask pack sheet can be more easily adhered to the skin when the pack is put on the face.

When the mask pack sheet is manufactured using nylon, the contact angle is low, so that the absorbency of the cosmetic composition can be improved. In the case of including an oxidizing additive, the nylon oxidation is suppressed, and the shape retention ratio and durability Can be improved.

The nylon may be at least one selected from 6-nylon, 6,6-nylon, 6,10-nylon, 7-nylon and 9-nylon and has a weight average molecular weight of 250 to 350 g / mol Do.

Preferred examples of the oxidation additive that can sufficiently improve the shape retention and durability of the mask pack sheet include N, N'-hexane-1,6-diylbis (3- (3,5-di butyl-4-hydroxyphenylpropionamide), diphenylamine antioxidants such as 4,4'-bis (?,? - dimethylbenzyl) diphenylamine, hindered amine light stabilizers (1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl Piperidinyl) imino] -1,6-hexanediyl [(2,2,6,6-tetramethyl-4-piperidinyl) imino], metal complex antioxidants include nickel N, N -Dibutyldithiocarbamate and is preferably contained in an amount of 0.05 to 0.2% by weight based on 100 parts by weight of the nylon resin.

The composition for a mask pack sheet of the present invention can be used as a mask pack sheet after it is formed into a nonwoven fabric by thermally melting nylon chips and then cut into required shapes.

In addition, a method of incorporating a curcumin derivative into the composition for a mask pack sheet of the present invention may be selected from the following methods.

1. A known method such as an inflation method or an extrusion method may be applied to a nylon chip to produce a chip containing a caustic soda or a ground powder by melt-kneading (compounding) a caustic soda or a ground powder containing a cucmine derivative. The nonwoven fabric can be produced using the chip thus manufactured.

2. After melt polymerization of nylon and drying and solid-phase polymerization, the raw material containing the cucmine derivative is blended or mixed and applied to the resin surface to produce a thermoplastic elastomer resin chip containing cucmine, Can be manufactured.

The nonwoven fabric may be prepared using the composition comprising the above-mentioned nylon resin and curcumin derivative as the mask pack sheet of the present invention, and the nonwoven fabric may be cut into a shape and size suitable for the application for use as a mask pack sheet.

The method for producing the nonwoven fabric of the present invention can be produced according to a method for producing a general nonwoven fabric, and in particular, it is preferably prepared through a meltblown method. When the meltblown method is used, it is advantageous to make the fibers constituting the nonwoven fabric have a very thin and uniform diameter so that the finally produced mark pack sheet has a smooth texture.

That is, the nonwoven fabric manufacturing step may include melting the thermoplastic resin to obtain a dope, radiating the dope through a die to form fibers, and collecting the fibers on a collector.

The spinning step may include ejecting the dope through a nozzle of the die and injecting high-temperature, high-pressure air into the dope immediately before being ejected through the nozzle. The spinning step of the present invention is carried out at 230 to 260 ° C and the air has a pressure of 0.5 to 2 kgf / cm 2 at a temperature of 230 to 260 ° C so that the spinning fibers are sufficiently drawn, Spinning can be performed so as to be a microfine fiber having a diameter of 0.5 to 10 탆. On the other hand, when the spinning temperature exceeds 260 캜, thermal decomposition of the hydrophilic polyol may be caused. Also, due to the excessive temperature, the bonding force between the fibers collected on the collector becomes too strong, which may make it difficult to form pores having an appropriate pore size, and the post-process may not proceed smoothly. As the spinning temperature is increased within the range of 230 to 260 캜, the fibers are stretched more and the average fiber diameter of the nonwoven fabric becomes smaller.

Generally, as the distance between the die and the collector (DCD) increases, the traveling distance of the spinning fiber becomes longer, so that the unevenness of the average pore diameter tends to increase due to the decrease of the uniformity of the fiber lamination. Therefore, in the present invention, the DCD is preferably 60 mm or less.

The angle between the dope jetting direction from the nozzle and the air jetting direction in the radiation step is set to 45 to 60 degrees. When the angle is less than 45 °, the angle of the nozzle becomes sharp, so that it is difficult to mass-produce and control the nozzle due to impact due to the impact upon attachment and detachment of the nozzle. It is difficult to control the average pore diameter by orienting the fibers of the spinning nonwoven fabric in one direction, There is a problem that the filtration time is increased due to an increase in the pressure at the time of filtration.

On the other hand, when the angle exceeds 60 °, the fibers radiated from the nozzle and the air of high temperature and high pressure form turbulence, so that the control of the average pore diameter may become difficult.

Meanwhile, the weight, the average thickness, etc. of the nonwoven fabric can be controlled by suitably adjusting the radiation temperature, air temperature and pressure, DCD, and angle between the nozzle and the air.

Hereinafter, embodiments of the present invention will be described in detail. This embodiment is for further illustrating the present invention, and thus the scope of the present invention is not limited thereto.

<Manufacture of nylon chips containing curcumin derivatives>

The charging ratio of a general nylon resin (nylon 66, weight average molecular weight 282.43 g / mol) and turmeric powder was mixed as shown in the following Table 1, and was fed at 200 to 250 ° C using a biaxial extruder having a diameter of 40 mm and a compression ratio of 40 at an input rate of 40 kg / And reaction extrusion at a screw speed of 250 rpm to produce nylon chips N1 to N3 containing sulfur dioxide.

Nylon resin
(weight%) Turmeric powder
(weight%) Coccumine
Derivative content
(ppm) N1 99.5 0.5 3500 N2 99.0 1.0 7000 N3 98.5 1.5 10500

&Lt; Preparation of composition for mask pack sheet >

Compositions for mask pack sheets of Examples 1 to 6 and Comparative Example 1 were prepared by combining nylon chips and PET (polyethylene terephthalate, weight average molecular weight: 282.43 g / mol) .

Nylon chip (% by weight) Oxidation additive
(weight%) Example 1 N1 100 0 Example 2 N1 99.95 0.05 Example 3 N1 99.8 0.2 Example 4 N2 99.95 0.05 Example 5 N3 99.95 0.05 Comparative Example 1 PET 100 0 Oxidation additive: N, N'-hexane-1,6-diylbis (3- (3,5-di-tert-butyl-4-hydroxyphenylpropionamide)

< Manufacture of Meltblown Nonwoven Fabrics>

The compositions for the mask pack sheets of Examples 1 to 6 and Comparative Example 1 were melted and spun at a temperature of 250 DEG C while the air temperature and air pressure were 250 DEG C and 0.8 kgf / The dope blowing direction and the air jet angle were set to 50 °, and the DCD was set to 30 mm to prepare a nonwoven fabric on the collector.

At this time, the thermoplastic elastomer fibers constituting the nonwoven fabric had an average diameter of 1 to 2 탆, the unit weight of the nonwoven fabric was 30 g / m ² , the thickness of the nonwoven fabric was 0.15 탆, and the porosity of the nonwoven fabric was 60%.

The contact angle, the absorbency, the tensile elongation, and the color of the nonwoven fabric as the thus-formed mark pack sheet were measured and the results are shown in Table 3 below.

Contact angle
(Wettability) (?) absorptivity
(%) Tensile elongation
(%) color
(b *) Example 1 33 575 490 40 Example 2 28 630 550 44 Example 3 25 613 590 49 Example 4 18 665 620 53 Example 5 11 730 710 58 Comparative Example 1 83 100 180 5.7

As can be seen from the above Table 3, the thermoplastic resins of Examples 1 to 5 including the hydrophilic polyol had a contact angle and a high water absorption rate as compared with the thermoplastic resin of Comparative Example 1, and the stretchability was increased and the tensile elongation was increased Able to know.

&Lt; Method for measuring physical properties &

The physical properties measured in the above Production Examples, Examples and Experimental Examples were measured by the following methods.

- Method of measuring molecular weight (GPC number average molecular weight)

The weight average molecular weight, the number average molecular weight and the z-average molecular weight in terms of standard polystyrene were measured by gel permeation chromatography (GPC) (Glyn Autochro). The polymer to be measured was dissolved in hexafluoroisopropanol so as to have a concentration of 0.10% by weight, and 500 μl was injected into GPC. The mobile phase of GPC was flowed at a flow rate of 1.0 mL / min using hexafluoroisopropanol, and the analysis was carried out at 40 ° C. The column was connected in series with two Guard columns and one PL 5μ mixed-D. The detector was measured using a 410 RI detector.

- Elasticity (tensile elongation)

Measured according to ASTM D638 at room temperature and the elongation at break (%) was measured

- Contact angle (wettability)

A contact angle meter DSA100 manufactured by KRUSS was used, and water droplets were dropped on the surface of the nonwoven fabric to measure the contact angle at the contact point between the end point of the water droplet curve and the solid surface at the junction of water droplets. The smaller the contact angle, the greater the wettability (hydrophilic)

Absorption

The absorbency of the fabricated nonwoven fabric was evaluated based on the absorbency test of JIS L 1912. The sample was cut into a length of 10 cm x 10 cm and two samples were collected in each of the examples and the comparative examples, The samples were immersed in a water bath at room temperature in an oblique manner so as to prevent air bubbles from appearing on the surface. After 60 seconds, the test specimens were placed in a stainless steel mesh And the weight (M2) of the nonwoven fabric having absorbed water was measured after one clip was removed and the water drained off vertically for 120 seconds was removed. The absorption power was calculated by Equation (3).

Absorption force (%) = M2 / M1 x 100

- porosity of nonwoven fabric (%)

The average pore (탆) and average pore distribution (%) of the nonwoven fabric were measured using a Capillary Flow Porometer (PMI, CFL-1100-AE) according to ASTM F 316-03. Specifically, a circular specimen having a diameter of 1 inch was thoroughly wetted with a Galwick solution having a surface tension of 15.9 dyne / cm, and the resultant was put into the above equipment. At this time, measurements were performed on 10 samples.

- Color (b *)

Yellowness (yellowing degree) was measured according to ASTM D1925-70 to show b *. The nonwoven fabric was cut to a size of 5 cm x 5 cm or more and measured. The measuring instrument was a color spectrophotometer of Shinko Co., Ltd. It can be seen that the higher the b *, the more yellowish the color is.

Claims (6)

A non-woven fabric comprising a non-woven fabric comprising thermoplastic resin fibers comprising a nylon resin and a curcumin derivative. The mask pack sheet according to claim 1, wherein the curcumin derivative is contained in the thermoplastic elastomer fibers at 1,000 to 15,000 pmm. The mask pack sheet according to claim 1, wherein the Curcumin derivative comprises a compound represented by any one of formulas (1) to (3).
&Lt; Formula 1 >

(2)

(3)

The mask pack sheet according to claim 1, wherein the Curcumin derivative is derived from turmeric or iron. The mask pack sheet according to claim 1, wherein the nonwoven fabric is manufactured by a melt-brown process, and the thermoplastic resin fibers have an average diameter of 0.5 to 10 μm. 2. The mask pack according to claim 1, wherein the nonwoven fabric is manufactured by a melt-brown process and has a unit weight of 30 to 60 g / m ² , a thickness of 0.15 to 0.3 탆, and a porosity of 60 to 90% .