Method for manufacturing mask pack sheet

Abstract

A method for manufacturing a mask pack sheet comprises: a step of preparing a biodegradable hollow fiber and a regenerated cellulose-based non-woven fabric comprising the biodegradable hollow fiber; a step of establishing optimal conditions by varying a mixing ratio of yarns and hydroentanglement conditions for the prepared non-woven fabric, the optimal conditions comprising a liquid absorption of 17-18 g / g, a liquid retention of 13-14 g / g, and a moisture retention rate of 60-70%; and a step of manufacturing with a tensile strength of 60-70 N / 1.5 cm² in a first direction, an elongation of 10-20%, a tensile strength of 9-20 N / 1.5 cm² in a direction perpendicular to the first direction, an elongation of 75-90%, and a thickness of 0.2-1 mm, wherein the step of manufacturing with a thickness of 0.2-1 mm comprises the steps of: mixing 60-80% of general regenerated cellulose fibers and 20-40% of biodegradable hollow fibers; forming a first non-woven fabric sheet by combing and loosening the mixed first fibers in a first direction; forming a second non-woven fabric sheet identical to the first non-woven fabric sheet by combing and loosening the mixed first fibers in the first direction; disposing the second non-woven fabric sheet on the first non-woven fabric sheet in a second direction perpendicular to the first direction; forming a mask pack sheet by hydroentangling the first non-woven fabric sheet and the second non-woven fabric sheet in a state in which the first and second non-woven fabric sheets are perpendicularly disposed; and drying and winding the mask pack sheet formed by hydroentangling.

Description

Method for manufacturing mask pack sheets

[0001] The present invention relates to a method for manufacturing a mask pack sheet, and more specifically, to a mask pack sheet capable of enhancing skin moisturizing ability by improving absorption, retention, and moisture retention through the derivation of an optimal mixing ratio of biodegradable hollow fibers that expand upon moisture absorption with general regenerated cellulose.

[0002] Mask packs are a product category that is continuously sought after due to their excellent moisturizing effect with just a single use. While there are various types of mask packs, such as fiber-impregnated, hydrogel, and bio-cellulose, fiber-impregnated types are widely used due to their ability to provide immediate effects. Currently, most fiber-impregnated masks consist of non-woven sheets using low-viscosity cosmetics, and non-woven fabrics are applied to aid in efficacy such as moisturizing and whitening.

[0003] However, even when using general round or split-type yarns, the range of applicable cosmetics is limited, and the contribution to efficacy is insufficient. Furthermore, shape stability after impregnation with high-viscosity cosmetics

[0004] Therefore, the objective of the present invention is to provide a method for manufacturing a mask pack sheet with maximized moisturizing effect by utilizing biodegradable hollow fibers and developing optimal mixing ratios and production conditions with general cellulose.

[0005] A method for manufacturing a mask pack sheet according to the present invention for achieving the above objective comprises the steps of: preparing a biodegradable hollow fiber and a regenerated cellulose-based nonwoven fabric comprising said biodegradable hollow fiber; establishing optimal conditions by varying the mixing ratio of said yarn and water-flow bonding conditions in said nonwoven fabric, thereby forming a liquid absorption of 17 to 18 g / g, a liquid retention of 13 to 14 g / g, and a moisture retention rate of 60 to 70%; and manufacturing a first-direction tensile strength of 60 to 70 N / 1.5 cm², an elongation of 10 to 20%, a tensile strength perpendicular to said first direction of 9 to 20 N / 1.5 cm², an elongation of 75 to 90%, and a thickness of 0.2 to 1 mm, wherein the step of manufacturing to a thickness of 0.2 to 1 mm comprises the step of mixing 60 to 80% of general regenerated cellulose fiber and 20 to 40% of biodegradable hollow fiber; The method comprises the steps of: forming a first nonwoven sheet by combing and unraveling the mixed first fibers in a first direction; forming a second nonwoven sheet identical to the first nonwoven sheet by combing and unraveling the mixed first fibers in a first direction; arranging the second nonwoven sheet in a second direction perpendicular to the first direction on the first nonwoven sheet in the first direction; forming a mask pack sheet by combining the first nonwoven sheet and the second nonwoven sheet with a high-pressure water stream while they are in a vertically arranged state; and drying and winding the mask pack sheet formed by combining with the high-pressure water stream. The liquid absorption, liquid retention, and moisture retention capacity of an expandable skin moisturizing mask pack sheet containing biodegradable hollow fibers, manufactured using a regenerated cellulose-based nonwoven fabric containing biodegradable hollow fibers, are improved, and user satisfaction can be enhanced as the tensile strength, elongation, and thickness are manufactured to be appropriate.

[0006] Here, the cellulose fiber is preferably any one of cotton, pulp, rayon, Tencel, bamboo, and peppermint, as this has an effect including sterilization and can reduce skin disorders.

[0007] Furthermore, the aforementioned biodegradable hollow fiber expands upon moisture absorption, increasing skin adhesion. Since the mask pack sheet does not fall off due to its weight even when attached to the user's face, it is desirable as it can enhance user satisfaction.

[0008] Here, the step of forming the moisture retention rate of 60 to 70% is desirable because it can be maintained in the highest state of moisture retention rate when the ratio of the biodegradable hollow fiber is less than or equal to that of the general regenerated cellulose fiber and the optimal mixing ratio is 7:3, thereby improving user satisfaction.

[0009] In addition, it is desirable to be characterized by calculating the above liquid absorption rate, the above liquid retention rate, and the above moisture retention rate.

[0010] Absorption = (w2-w1) / w1

[0011] w1: Weigh a 3cm x 3cm specimen before water absorption, immerse for 20 minutes, lift the specimen for 30 seconds to remove moisture, and then weigh (w2)

[0012] Replenishment = (w3-w1) / w1

[0013] Measure weight (w3) after pressing a weight onto a wet specimen measuring 3 cm by 3 cm for about 1 minute

[0014] Moisture retention rate = 100-{(w2-w3)*100 / (w2-w1)}

[0015] Measure the weight (w1) of a specimen with width and length 10 cm before absorbing water, add water equal to 40 times the weight of the specimen to the specimen and absorb water for 30 minutes (water temperature 37.5℃), lift the specimen for 30 seconds and measure the weight (w2), then dry in a 37.5℃ oven for 20 minutes, and measure the weight after 30 seconds (w3).

[0016] According to the present invention, the liquid absorption, liquid retention, and moisture retention of an expandable skin moisturizing mask pack sheet containing biodegradable hollow fibers, manufactured using a regenerated cellulose-based nonwoven fabric containing biodegradable hollow fibers, are improved, and since the tensile strength, elongation, and thickness are manufactured appropriately, user satisfaction can be enhanced.

[0017] In addition, it has a sterilizing effect and can reduce skin disorders.

[0018] In addition, increased skin adhesion prevents the mask sheet from falling off due to its weight even when attached to the user's face, which can lead to improved user satisfaction.

[0019] In addition, since it can be maintained in a state of highest moisture retention, it has the effect of improving user satisfaction.

[0020] FIG. 1 is an exemplary diagram of a method for manufacturing a mask pack sheet according to the present invention.

[0021] FIGS. 2 to 7 are tables showing Comparative Example 1 and Examples 1 to 5.

[0022] Hereinafter, a method for manufacturing a mask pack sheet according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0023] FIG. 1 is an exemplary diagram of a method for manufacturing a mask pack sheet according to the present invention.

[0024] The mask pack sheet (1) includes regenerated cellulose fibers (10) and biodegradable hollow fibers (20).

[0025] The regenerated cellulose fiber (10) does not have a hollow structure, and the regenerated cellulose fiber (10) can be any one of cotton, pulp, rayon, Tencel, bamboo, and peppermint.

[0026] The biodegradable hollow fiber (20) is formed into a hollow. The biodegradable hollow fiber expands when it absorbs moisture, which can increase its adhesion to the skin.

[0027] An inflatable skin moisturizing mask pack sheet (1) containing biodegradable hollow fibers is composed of regenerated cellulose-based fibers (10) that do not have hollows and biodegradable hollow fibers (20) that have hollows, in a mixing ratio of 60 to 80% of general regenerated cellulose fibers and 20 to 40% of biodegradable hollow fibers.

[0028] It may be a nonwoven fabric made by mixing regenerated cellulose fibers (10) and hollow fibers (20).

[0029] The biodegradable hollow fiber may be characterized in that the ratio of the biodegradable hollow fiber is less than that of a general regenerated cellulose fiber, and the mixing ratio of the regenerated cellulose-based fiber (10) and the biodegradable hollow fiber (20) is 7:3, the water absorption capacity is 17 to 18 g / g, the water retention capacity is 13 to 14 g / g, and the moisture retention rate is 60 to 70%.

[0030] FIG. 1 is an exemplary diagram of a method for manufacturing a mask pack sheet according to the present invention. A method for manufacturing a mask pack sheet according to the present invention will be described.

[0031] In step 1, a biodegradable hollow fiber that expands upon moisture absorption to increase skin adhesion, and a regenerated cellulose-based nonwoven fabric containing the biodegradable hollow fiber, which is one of cotton, pulp, rayon, Tencel, bamboo, and peppermint, are prepared.

[0032] In the second step, optimal conditions are established by varying the yarn mixing ratio and water-flow bonding conditions in the nonwoven fabric prepared, wherein the liquid absorption is 17 to 18 g / g, the liquid retention is 13 to 14 g / g, and 60 to 80% of general regenerated cellulose fibers and 20 to 40% of the biodegradable hollow fibers are mixed to form a moisture retention rate of 60 to 70%. The proportion of biodegradable hollow fibers is less than or equal to that of general regenerated cellulose fibers, and the optimal mixing ratio is 7:3.

[0033] Here, the formula for calculating the above-mentioned absorbency, above-mentioned liquid retention, and above-mentioned moisture retention rate is: absorbency = (w2-w1) / w1, where w1: weighs a 3cm x 3cm specimen before water absorption, immerses it for 20 minutes, lifts the specimen for 30 seconds to remove moisture, and then weighs it (w2).

[0034] Liquid level = (w3-w1) / w1, weigh (w3) after pressing a weight onto a wet specimen measuring 3cm x 3cm for approximately 1 minute

[0035] The moisture retention rate is calculated by measuring the weight (w1) of a specimen with width and length of 10 cm before it absorbs water, adding 40 times the weight of the specimen in water and absorbing it for 30 minutes (water temperature 37.5℃), measuring the weight (w2) after holding the specimen for 30 seconds, drying it in a 37.5℃ oven for 20 minutes, and measuring the weight (w3) after 30 seconds.

[0036] In the third step, it is manufactured with a first-direction tensile strength of 60 to 70 N / 1.5 cm², an elongation of 10 to 20%, a tensile strength perpendicular to the first direction of 9 to 20 N / 1.5 cm², an elongation of 75 to 90%, and a thickness of 0.2 to 1 mm.

[0037] The step of manufacturing with a thickness of 0.2 to 1 mm comprises: mixing 60 to 80% of general regenerated cellulose fibers and 20 to 40% of biodegradable hollow fibers; combing the mixed first fibers in a first direction to unravel them to form a first nonwoven sheet; combing the mixed first fibers in a first direction to unravel them to form a second nonwoven sheet identical to the first nonwoven sheet; arranging the second nonwoven sheet in a second direction perpendicular to the first direction on the first nonwoven sheet in the first direction; forming a mask pack sheet by combining the first nonwoven sheet and the second nonwoven sheet with a high-pressure water stream while they are vertically arranged; and drying and winding the mask pack sheet formed by combining with the high-pressure water stream.

[0038] An example of implementation will be explained later.

[0039] Manufacturing Example 1: Nonwoven fabric performance test by water flow intensity

[0040] Table 1 below shows the difference in water flow intensity according to the raw material mixing ratio by applying process Line 1.

[0041] Water flow strength 80 Classification (Tencel : Hollow fiber) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 100 : 0 90 : 10 70 : 30 50 : 50 30 : 70 10 : 90 Thickness (mm) 0.4 20.4 10.3 70 34 0.2 90.27 Air permeability (ft 3 / ft 2 / m)407407409410409409 Tensile Strength MD60.158.257455.151.349.2CD9.18.28.07.37.46.9 Elongation MD29.229.831.234.234.936.2CD106.4108.7110.2110.9114.1114.8

[0042] Water Flow Strength 100 Classification (Tencel : Hollow Fiber) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 100 : 0 90 : 10 70 : 30 50 : 50 30 : 70 10 : 90 Thickness (mm) 0.38 0.38 0.31 0.30 0.27 0.25 Air Permeability (ft) 3 / ft 2 / m)380381387387389387 Tensile Strength MD6 3.96 2.86 2.36 0.15 8.75 5.2CD 9.49 18.88.48 27.5 Elongation MD2 3.72 5.12 5.72 8.53 0.13 2.4CD 88.18 9.79 2.49 4.39 6.29 9.8

[0043] Manufacturing Example 2: Nonwoven fabric performance test by number of bonding cycles. Table 3 below applies a water flow strength of 100 based on Manufacturing Example 1 and verified the performance according to the number of process cycles for each blend.

[0044] Number of Bonds 2 Classification (Tencel : Hollow Fiber) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 100 : 0 90 : 10 70 : 30 50 : 50 30 : 70 10 : 90 Thickness (mm) 0.3 10.28 0.24 0.2 10.2 10.21 Air Permeability (ft) 3 / ft 2 / m)340341340340342340 Tensile Strength MD7 2.6 9.26 8.16 5.26 4.86 2.3CD 15.5 14.2 13.8 12.4 10.29.8 Elongation MD10.1 11.4 12.6 13.9 15.1 15.8CD 78.47 9.88 1.68 4.28 7.18 8.4

[0045] Manufacturing Example 3: Performance by raw material blending ratio. Table 4 below confirms the performance of nonwoven fabrics by blending ratio based on Manufacturing Example 1 and Manufacturing Example 2, with two process steps and a water flow strength of 100.

[0046] Classification (Tencel : Hollow Fiber) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 100 : 0 90 : 10 70 : 30 50 : 50 30 : 70 10 : 90 Absorption Rate (sec) Low Viscosity 7 9 4 8 50 40 38 30 High Viscosity > 1 1 5 6 2 5 6 4 3 4 3 4 Absorption Capacity (g / g) 15.8 14.5 18.4 17.2 17.5 16.8 Liquid Retention Capacity (g / g) 11.7 10.5 15.2 13.0 14.2 13.8 Moisture Retention Rate (%) 5 4.5 5 8.1 64.0 71.0 73.2 73.0 Adhesion (mg) 3 10.4 35 2.5 36 9.4 25 9.7 24 2.1 23 2.8

[0047] The advantages of hollow fibers according to the mixing ratio and viscosity of low viscosity 400 cps and high viscosity 1,000 cps can be confirmed. Here, Tables 1 to 4 were separated and organized and shown in Figures 2 to 7. In addition, the number of bonds was classified and measured as water flow strengths of 80 and 10.

[0048] Modifiable embodiments other than the above embodiments are described.

[0049] As the content increases, there are limitations to using it in finished mask pack products. Although hollow fibers possess the advantages of high absorption, retention, and moisture-holding capabilities, the yarn swells as it absorbs moisture, increasing its thickness. This makes the material heavy when applied to the skin, resulting in reduced adhesion. Therefore, the mixing ratio of hollow fibers and Tencel is crucial; the ratio is important because using a large amount of hollow fibers leads to poor strength and elongation.

[0050] Due to the above-described mask pack sheet (1) using hollow fibers and the method for manufacturing a mask pack sheet using hollow fibers, the absorption, retention, and moisture retention of the mask pack sheet are improved by mixing natural fibers of eco-friendly materials with hollow fibers, thereby improving user satisfaction.

[0051] In addition, the eco-friendly fiber made from eucalyptus tree extract has a sterilizing effect and can reduce skin irritation.

[0052] In addition, since it is made of non-woven fabric, the cut edges do not unravel, making it easy to manufacture sheet masks.

[0053] In addition, user satisfaction can be enhanced due to the improved absorption, retention, and moisture retention capabilities of the mask pack sheet.

Claims

1. In a method for manufacturing a mask pack sheet, A step of preparing a biodegradable hollow fiber and a regenerated cellulose-based nonwoven fabric comprising the biodegradable hollow fiber; A step of establishing optimal conditions by varying the mixing ratio of the yarn and the water flow bonding conditions in the prepared nonwoven fabric, thereby forming a liquid absorption of 17 to 18 g / g, a liquid retention of 13 to 14 g / g, and a moisture retention rate of 60 to 70%; and The method includes the step of manufacturing with a first-direction tensile strength of 60 to 70 N / 1.5 cm², an elongation of 10 to 20%, a tensile strength perpendicular to the first direction of 9 to 20 N / 1.5 cm², an elongation of 75 to 90%, and a thickness of 0.2 to 1 mm. The step of manufacturing with a thickness of 0.2 to 1 mm is, A step of mixing 60 to 80% of general regenerated cellulose fibers and 20 to 40% of biodegradable hollow fibers; A step of forming a first nonwoven sheet by combing and unraveling the mixed first fibers in a first direction; A step of forming a second nonwoven fabric sheet identical to the first nonwoven fabric sheet by combing the mixed first fibers in a first direction to loosen them; A step of arranging the second nonwoven sheet in a second direction perpendicular to the first direction on the first nonwoven sheet in the first direction; A step of forming a mask pack sheet by combining a high-pressure water stream while the first nonwoven sheet and the second nonwoven sheet are vertically arranged; and A method for manufacturing a mask pack sheet characterized by including the steps of drying and winding the mask pack sheet formed by combining a high-pressure water stream.

2. In Paragraph 1, A method for manufacturing a mask pack sheet characterized in that the cellulose fiber is one of cotton, pulp, rayon, Tencel, bamboo, and peppermint.

3. In Paragraph 2, A method for manufacturing a mask pack sheet characterized by the above-mentioned biodegradable hollow fiber expanding upon moisture absorption to increase skin adhesion.

4. In Paragraph 3, The step of forming the above moisture retention rate of 60 to 70% is, A method for manufacturing a mask pack sheet characterized by mixing 60 to 80% of general regenerated cellulose fibers and 20 to 40% of the biodegradable hollow fibers.

5. In Paragraph 1, The step of forming the above moisture retention rate of 60 to 70% is, A method for manufacturing a mask pack sheet characterized in that the ratio of the biodegradable hollow fiber is less than or equal to that of general regenerated cellulose fiber, and the optimal mixing ratio is 7:

3.

6. In Paragraph 1, A method for manufacturing a mask pack sheet characterized by the following formulas for calculating the above liquid absorption rate, above liquid retention rate, and above moisture retention rate. Absorption = (w2-w1) / w1 w1: Weigh a 3cm x 3cm specimen before water absorption, immerse for 20 minutes, lift the specimen for 30 seconds to remove moisture, and then weigh (w2) Replenishment = (w3-w1) / w1 Measure weight (w3) after pressing a weight onto a wet specimen measuring 3 cm by 3 cm for about 1 minute Moisture retention rate = 100-{(w2-w3)*100 / (w2-w1)} Measure the weight (w1) of a specimen with width and length 10 cm before absorbing water, add water equal to 40 times the weight of the specimen to the specimen and absorb water for 30 minutes (water temperature 37.5℃), lift the specimen for 30 seconds and measure the weight (w2), then dry in a 37.5℃ oven for 20 minutes, and measure the weight after 30 seconds (w3).

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