THIN SHEET MASK HAVING SNUG FIT, ELECTRICAL CONDUCTIVITY AND ANTIBACTERIAL FUNCTION, AND MANUFACTURING METHOD FOR THE SAME

Abstract

Disclosed is a mask sheet and a sheet mask using the same, and more particularly an eco-friendly mask sheet having electrical conductivity and antibacterial function and a sheet mask using the same. The sheet mask includes a knit mask sheet having 1 to 20 wt. % of an electrically conductive fiber containing a copper component; and a cosmetic composition soaking into the mask sheet.

Claims

1. A sheet mask comprising a knit mask sheet and a cosmetic composition soaking into the mask sheet, the knit mask sheet comprising 1 to 20 wt. % of an electrically conductive fiber containing a copper component.

2. The sheet mask as claimed in claim 1, wherein the mask sheet comprises a conductive fiber containing a copper component and a non-conductive fiber.

3. The sheet mask as claimed in claim 1, wherein the mask sheet comprises a conductive region knitted using the electrically conductive fiber containing copper and a non-conductive region knitted using other fibers.

4. The sheet mask as claimed in claim 3, wherein the conductive region has a striped pattern.

5. The sheet mask as claimed in claim 1, wherein the mask sheet is a scoured mask sheet.

6. The sheet mask as claimed in claim 1, wherein the mask sheet comprises a low-denier fiber having a denier count between 15 d and 150 d.

7. The sheet mask as claimed in claim 1, wherein the mask sheet is a thin mask sheet.

8. The sheet mask as claimed in claim 1, wherein the mask sheet comprises 1 to 20 wt. % of an electrically conductive fiber containing a copper component, 1 to 20 wt. % of a non-conductive fiber containing a copper component, and 60 to 98 wt. % of a cotton fiber.

9. The sheet mask as claimed in claim 1, wherein the mask sheet comprises 1 to 20 wt. % of an electrically conductive fiber containing a copper component, 1 to 20 wt. % of a non-conductive fiber containing a copper component, 50 to 90 wt. % of a polyester fiber, and 1 to 20 wt. % of a spandex fiber.

10. The sheet mask as claimed in claim 1, wherein the mask sheet comprises 1 to 20 wt. % of an electrically conductive fiber containing a copper component, 1 to 20 wt. % of a non-conductive fiber containing a copper component, 10 to 40 wt. % of a cotton fiber, 10 to 30 wt. % of Tencel fiber, 20 to 50 wt. % of a polyester fiber, and 1 to 20 wt. % of a spandex fiber.

11. The sheet mask as claimed in claim 1, wherein the cosmetic composition comprises a copper component.

12. A knit fabric comprising 1 to 20 wt. % of an electrically conductive fiber containing a copper component.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0068] FIG. 1 is a photographic image of a mask sheet according to one embodiment of the present invention.

[0069] FIG. 2 presents photographic images showing the electrical conductivity of a knit fabric according to one embodiment of the present invention.

[0070] FIG. 3 is a test report showing the antibacterial function of a knit fabric according to one embodiment of the present invention.

[0071] FIG. 4 shows the elasticity of a fabric for mask sheet according to one embodiment of the present invention; FIG. 4a is the fabric before stretching and FIG. 4b is the fabric stretched on both sides.

[0072] FIG. 5 is a photographic image of a mask sheet according to another embodiment of the present invention.

[0073] FIG. 6 is a photographic image of a mask sheet according to still another embodiment of the present invention.

[0074] FIG. 7 shows the thickness measurement of a mask sheet according to still another embodiment of the present invention.

[0075] FIG. 8 is a test report showing the antibacterial function of a knit fabric according to one embodiment of the present invention after laundry.

BEST MODES FOR CARRYING OUT THE INVENTION

[0076] Hereinafter, the present invention will be described in further detail with reference to examples. It will be obvious to those skilled in the art that these examples are illustrative purposes only and are not intended to limit the scope of the present invention.

Example 1

[0077] A knitting machine was used to make a knit fabric consisting of 5 wt. % of a copper-containing conductive 60-denier nylon fiber, 5 wt. % of a 70-denier Glotech fiber, and 90 wt. % of a 130-denier cotton fiber in a striped pattern with alternating stripes of the copper-containing conductive nylon fiber and the Glotech fiber. The knit fabric was scoured and cut into the shape of a face as shown in FIG. 1 to prepare a mask sheet. Referring to FIG. 1, on the cotton base 10 were formed alternating stripes of the copper-containing conductive nylon fiber 20 and the non-conductive nylon fiber 30.

[0078] The socket of a light bulb for measuring electrical conductivity was wrapped in the scoured knit mask sheet and plugged on. As can be seen from FIG. 2, the bulb lighted up. The antibacterial function of the scoured knit fabric was measured. As shown in FIG. 3, the scoured knit fabric proved to have antibacterial function to 100% reduction against Staphylococcus Aureus and Klebsiella Pneumoniae.

[0079] The scoured knit fabric was also measured in regards to the elasticity. As shown in FIG. 4, the knit fabric was stretched.

[0080] The mask sheet thus obtained was soaked in a serum and placed in a packaging container to complete a sheet mask.

Example 2

[0081] A knitting machine was used to make a knit fabric including 10 wt. % of the copper-containing conductive nylon fiber, 10 wt. % of the Glotech fiber, and 80 wt. % of the 130-denier cotton fiber in a striped pattern with alternating stripes of the copper-containing conductive nylon fiber and the Glotech fiber. The knit fabric was scoured and cut into the shape of a face to complete a mask sheet.

Comparative Example 1

[0082] The procedures were performed in the same manner as described in Example 1, excepting that the knit fabric used 30 wt. % of the copper-containing conductive nylon fiber, 10 wt. % of the Glotech fiber, and 60 wt. % of the 130-denier cotton fiber.

Comparative Example 2

[0083] The procedures were performed in the same manner as described in Example 1, excepting that the knit fabric was not scoured.

TABLE-US-00001 TABLE 1 Comparative Examples Examples Div. 1 2 1 2 Thinness Touch quality X Smell X Impregnation () () () () state Electrical () () () () conductivity () Excellent: 8 out of 10 panels called good, Fair: 6 out of 10 panels called good, Bad: 4 out of 10 panels called good, X Worst: 2 out of 10 panels called good. Thinness: Panels determined whether the sheet mask placed on the face felt thin and clear. Touch quality: Panels determined whether the mask sheet felt soft to the touch. Smell: Panels determined whether the mask sheet smelled a coppery odor. Impregnation state: From visual observation one hour after soaking a sample of the mask sheet specimen in serum, panels called good if no uneven surface was observed; and called bad if uneven surface was observed. Electrical conductivity: Panels determined whether the bulb wrapped in the mask sheet lighted up.

Example 3

[0084] The copper-containing conductive nylon fiber, the Glotech fiber, a 50-denier black polyester fiber, and a 30-denier black spandex fiber were arranged in a knitting machine. With the loop length of each fiber adjusted, the knitting machine was operated to form alternating stripes of the conductive nylon fiber and the Glotech fiber by knitting alternately with the polyester and spandex fibers.

[0085] 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 85 wt. % of the polyester fiber, and 5 wt. % of the spandex fiber were used to make a fabric in a striped pattern by textured knitting. The fabric was then scoured to complete a striped knit fabric.

[0086] The knit fabric thus obtained was cut into the shape of a face to make a mask sheet as shown in FIG. 5.

[0087] Referring to FIG. 5, on the polyester-spandex blend base 10 were formed alternating stripes of the copper-containing conductive nylon fiber 20 and the copper-containing non-conductive nylon fiber 30. The mask sheet thus obtained was soaked in a serum and put into a packaging container to complete a sheet mask.

[0088] The sheet mask was left untouched for 30 days and measured in regards to the concentration of copper in the serum. The detected amount of the copper component was 42 g/g per unit of serum. The antibacterial function of the knit fabric was evaluated after laundry. As shown in FIG. 8, the knit fabric proved to have antibacterial function to 99% reduction against Staphylococcus Aureus and Klebsiella Pneumoniae even after 30 times of laundry.

Example 4

[0089] The procedures were performed in the same manner as described in Example 3, excepting that the knit fabric used 7 wt. % of the copper-containing conductive nylon fiber, 7 wt. % of the Glotech fiber, 76 wt. % of the polyester fiber, and 10 wt. % of the spandex fiber.

Example 5

[0090] The procedures were performed in the same manner as described in Example 3, excepting that the knit fabric used 15 wt. % of the copper-containing conductive nylon fiber, 15 wt. % of the Glotech fiber, 55 wt. % of the polyester fiber, and 15 wt. % of the spandex fiber.

Example 6

[0091] The procedures were performed in the same manner as described in Example 3, excepting that a 15-denier polyester fiber was used.

Example 7

[0092] The procedures were performed in the same manner as described in Example 3, excepting that a 150-denier polyester fiber was used.

Comparative Example 3

[0093] The procedures were performed in the same manner as described in Example 3, excepting that the knit fabric used 25 wt. % of the copper-containing conductive nylon fiber, 25 wt. % of the Glotech fiber, 45 wt. % of the polyester fiber, and 5 wt. % of the spandex fiber.

Comparative Example 4

[0094] The procedures were performed in the same manner as described in Example 3, excepting that the knit fabric used 0.5 wt. % of the copper-containing conductive nylon fiber, 0.5 wt. % of the Glotech fiber, 95 wt. % of the polyester fiber, and 4 wt. % of the spandex fiber.

Comparative Example 5

[0095] The procedures were performed in the same manner as described in Example 3, excepting that 5-denier polyester and spandex fibers were used.

Comparative Example 6

[0096] The procedures were performed in the same manner as described in Example 3, excepting that 200-denier polyester and spandex fibers were used.

Comparative Example 7

[0097] The procedures were performed in the same manner as described in Example 3, excepting that the knit fabric was not scoured.

TABLE-US-00002 TABLE 2 Examples Comparative Examples Div. 3 4 5 6 7 3 4 5 6 7 Thinness () () () () () () () X () Touch quality () () () () () () X X Smell X Impregnation () () () () () () X () () state Electrical () () () () () () X () () () conductivity () Excellent: 8 out of 10 panels called good, Fair: 6 out of 10 panels called good, Bad: 4 out of 10 panels called good, X Worst: 2 out of 10 panels called good. Thinness: Panels determined whether the sheet mask placed on the face felt thin and clear. Touch quality: Panels determined whether the mask sheet felt soft to the touch. Smell: Panels determined whether the mask sheet smelled a coppery odor. Impregnation state: From visual observation one hour after soaking a sample of the mask sheet specimen in serum, panels called good if no uneven surface was observed; and called bad if uneven surface was observed. Electrical conductivity: Panels determined whether the bulb wrapped in the mask sheet lighted up.

Example 8

[0098] The conductive nylon fiber, the Glotech fiber, a cotton fiber, a Tencel fiber, a polyester fiber, and a black spandex fiber were arranged in a knitting machine. With the loop length of each fiber adjusted, the knitting machine was operated to form alternating strips of the conductive nylon fiber and the Glotech fiber by knitting alternately with a yarn consisting of 100-denier cotton fiber, 100-denier Tencel fiber, 50-denier polyester fiber, and 30-denier spandex fiber.

[0099] 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 25 wt. % of the cotton fiber, 25 wt. % of the Tencel fiber, 30 wt. % of the polyester fiber, and 10 wt. % of the spandex fiber were used to make a fabric in a striped pattern by textured knitting. The fabric was then scoured to complete a striped knit fabric.

[0100] The knit fabric thus obtained was cut into the shape of a face to make a mask sheet as shown in FIG. 6. Referring to FIG. 6, on the polyester-spandex-cotton-Tencel blend base 10 were formed alternating stripes of the copper-containing conductive nylon fiber 20 and the copper-containing non-conductive nylon fiber 30. As shown in FIG. 7, the knit fabric was measured in regards to the thickness, and the thickness measurement was 0.35 mm. The mask sheet thus obtained was soaked in a serum and put into a packaging container to complete a sheet mask.

[0101] The sheet mask was left untouched for 30 days and measured in regards to the concentration of copper in the serum. The detected amount of the copper component was 30 g/g per unit of serum. The antibacterial function of the knit fabric was evaluated after laundry.

Example 9

[0102] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 20 wt. % of the conductive nylon fiber, 5 wt. % of the Glotech fiber, 20 wt. % of the cotton fiber, 20 wt. % of the Tencel fiber, 30 wt. % of the polyester fiber, and 5 wt. % of the spandex fiber.

Example 10

[0103] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 5 wt. % of the conductive nylon fiber, 5 wt. % of the Glotech fiber, 30 wt. % of the cotton fiber, 15 wt. % of the Tencel fiber, 40 wt. % of the polyester fiber, and 5 wt. % of the spandex fiber.

Example 11

[0104] The procedures were performed in the same manner as described in Example 8, excepting that a 150-denier polyester fiber was used.

Comparative Example 8

[0105] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 50 wt. % of the cotton fiber, 20 wt. % of the Tencel fiber, 15 wt. % of the polyester fiber, and 5 wt. % of the spandex fiber.

Comparative Example 9

[0106] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 30 wt. % of the cotton fiber, 20 wt. % of the Tencel fiber, 25 wt. % of the polyester fiber, and 15 wt. % of the spandex fiber.

Comparative Example 10

[0107] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 50 wt. % of the cotton fiber, 30 wt. % of the polyester fiber, and 10 wt. % of the spandex fiber.

Comparative Example 11

[0108] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 50 wt. % of the cotton fiber, 30 wt. % of the polyester fiber, and 10 wt. % of the spandex fiber.

Comparative Example 12

[0109] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 5 wt. % of the copper-containing conductive nylon fiber, 5 wt. % of the Glotech fiber, 50 wt. % of the cotton fiber, 25 wt. % of the Tencel fiber, and 15 wt. % of the spandex fiber.

Comparative Example 13

[0110] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric used 25 wt. % of the copper-containing conductive nylon fiber, 20 wt. % of the Glotech fiber, 20 wt. % of the cotton fiber, 10 wt. % of the Tencel fiber, 20 wt. % of the polyester fiber, and 5 wt. % of the spandex fiber.

Comparative Example 14

[0111] The procedures were performed in the same manner as described in Example 8, excepting that a 200-denier polyester fiber was used.

Comparative Example 15

[0112] The procedures were performed in the same manner as described in Example 8, excepting that the knit fabric was not scoured.

TABLE-US-00003 TABLE 3 Examples Comparative Examples Div. 8 9 10 11 8 9 10 11 12 13 14 15 Thinness () () () () () () () () X () Touch quality () () () () () () () () X X Smell X X X Impregnation () () () () X X X X () () () state () Excellent: 8 out of 10 panels called good, Fair: 6 out of 10 panels called good, Bad: 4 out of 10 panels called good, X Worst: 2 out of 10 panels called good. Thinness: Panels determined whether the sheet mask placed on the face felt thin and clear. Touch quality: Panels determined whether the mask sheet felt soft to the touch. Smell: Panels determined whether the mask sheet smelled a coppery odor. Impregnation state: From visual observation one hour after soaking a sample of the mask sheet in serum, panels called good if no uneven surface was observed; and called bad if uneven surface was observed. Electrical conductivity: Panels determined whether the bulb wrapped in the mask sheet lighted up.

[0113] [Experiments]

[0114] Copper-containing conductive nylon fiber According to the embodiment of KR Patent No. 10-1167860, an about 70-denier nylon fiber was put into a reaction bath. With a bath ratio adjusted to 1:15-20, 3 to 5 g/L of a deoiling agent was added to the reaction bath at 60 C. for 40 min, and the suspended solids produced by the action of the deoiling agent were washed off with water. Into the reaction bath were added 2 to 3% o.w.f. of levulinic acid, 0.1 to 0.5% o.w.f. of sodium lauryl sulfate, 0.1 to 0.3% o.w.f. of polyethylene glycol, 8 to 10% o.w.f. of sodium thiosulfate, 0.2% o.w.f. of EDTA, and 10 to 20% o.w.f. of copper sulfate. After 10-minute agitation, the bath was heated up to 60 C. at a rate of 1 C./min and a pH value ranging from 4 to 5. The reaction was activated at 60 C. for 60 min, and 0.3% o.w.f. of sodium hypophosphite was added. Reductive precipitation was caused at 60 C. for 20 min, and unreacted substances were removed while the pH value was below 7. At pH 7, 0.3% o.w.f. of magnesium hydroxide was added and activated at 40 C. for 20 min to remove the remaining sulfur. The conductive nylon fiber thus obtained had a specific resistance of 10.sup.2 .Math.cm and a fineness of 60 denier.

[0115] Non-Conductive Fiber

[0116] The copper-containing non-conductive fiber was 70-denier Glotech fiber (Kolon Industries Inc., South Korea). Cotton fiber, Tencel fiber, polyester fiber, and spandex fiber were commercially available.

[0117] Electrical Conductivity Test

[0118] For an electrical conductivity test, a light bulb was put into contact with the mask sheet. A connection of the bottom and lateral sides of the bulb socket to a conductive material causes the bulb to light up. As shown in FIG. 4, the bottom and lateral sides of the bulb socket were connected to the fabric. When the bulb was plugged on and lighted up, then the fabric proved to be electrically conductive.

[0119] Antibacterial Function Test

[0120] An institute for antimicrobial efficacy testing, Intertek, was asked to evaluate the antibacterial function of the knit fabrics according to the AATCC 147:2016 method. The antibacterial function was measured against Staphylococcus Aureus (ATTC 6538) and Klebsiella Pneumoniae (ATTC 4352) after incubation of 18 to 24 hours in a nutrient medium at 37 C.

[0121] Antibacterial Function after Laundry

[0122] The antibacterial function test was conducted for the fabrics according to KS K 0693:2016. The antibacterial function was measured against Staphylococcus Aureus (ATTC 6538) and Klebsiella Pneumoniae (ATTC 4352). The concentration of the inoculated solution was 1.210.sup.5 CFU/mL for Staphylococcus Aureus (ATTC 6538) and 1.010.sup.5 CFU/mL for Klebsiella Pneumoniae (ATTC 4352). The control surface was the standard cotton fabric. Tween 80 was used as a nonionic surfactant for laundry, and its used amount was 0.05% of the inoculated solution. Laundry conditions were given as specified in KS K ISO 6330: 2011, 8B.

[0123] Preparation of Sheet Mask

[0124] The fabric was cut into the shape of a mask to obtain a mask sheet. Then, the mask sheet was soaked in a serum and placed in a packaging container to complete a sheet mask.

[0125] Stretchability of Mask Sheet

[0126] The conductive fabric was pulled on both sides to stretch in the lengthwise direction of the stripes and measured in regards to the stretchability.

[0127] Testing for Thinness, Touch Quality and Smell of Mask Sheet

[0128] The thickness of the mask sheet was measured with a fabric thickness gauge. The mask sheet, placed on the face, was subjected to a sensory evaluation in regards to thinness, touch quality, and smell. 10 panels were selected to participate in the testing for thinness, tough quality and smell of the mask sheet.

[0129] Copper Concentration

[0130] KOTITI was asked to measure the concentration of copper in the mask sheet according to In House Method (ICP-MS).