KR102556727B1 - 2-layer Nonwoven Sheet With Moisture And Water Repellent Function And Mask Pack Using That - Google Patents

Abstract

The present invention is a two-layer nonwoven fabric sheet laminated with a moisture-repellent nonwoven fabric layer and a water-repellent nonwoven fabric layer, wherein the moisture-repellent nonwoven fabric layer is composed of hydrophilic polyester-based resin fibers, and among the hard segments, diol (Diol) component 1, Terephthalic acid is used as a component of 4-butanediol and dicarbonic acid, and the soft segment polyol is polyethylene glycol (PEG), and the molecular weight of the polyol is 2000 ~ 5000 and is composed of 30 to 70% by weight compared to the hydrophilic polyester resin, and the water-repellent nonwoven fabric layer is composed of water-repellent polyester resin fibers, and 1,4-butanediol as a diol component in the hard segment ( 1,4-Butanediol), terephthalic acid is used as a dicarbonic acid component, and the soft segment polyol is polyethylene glycol (PEG) or polytetramethylene glycol (PTMG), and the PEG The molecular weight is 100 to 1000, composed of 5 to 50% by weight compared to the water-repellent polyester resin, and the PTMG molecular weight is 100 to 3000, moisturizing characterized in that it consists of 30 to 70% by weight compared to the water-repellent polyester resin It relates to a water repellent 2-layer non-woven fabric sheet.

Description

2-layer nonwoven sheet with moisturizing and water repellent function and mask pack using the same {2-layer Nonwoven Sheet With Moisture And Water Repellent Function And Mask Pack Using That}

The non-woven fabric sheet of the present invention is a 2-layer non-woven fabric sheet with moisturizing and water-repellent functions and a mask pack using the same. More specifically, polyester fibers having a water-repellent function are used for the surface layer and polyester fibers having an absorption function are used for the back layer. By doing so, it relates to a non-woven fabric sheet having moisturizing and water-repellent functions and a mask pack using the same.

A pack originally means 'to wrap', and means a kind of cosmetic product in which a pack agent is tightly applied to the face in order to achieve the purpose of skin care. A pack agent is appropriately selected according to the condition of the skin and temporarily blocks the skin and the outside. At that time, the active ingredients contained in the pack do not evaporate to the outside and penetrate into the skin in large amounts, so that they function as moisturizing, soothing, aging, removing dead skin cells and wastes, restoring tired skin, enhancing elasticity, and whitening.

A facial mask is a type of pack made using a mask sheet made according to the shape of the face, and is also called a sheet mask. As for the mask sheet, the representative material has changed over time from the non-woven fabric sheet in the 1990s to the current 4th generation bio-cellulose sheet. The first generation mask sheet is a rayon and polypropylene blend non-woven fabric sheet. It was easy to secure materials and cheap, so it had a low-cost mass distribution structure. After that, the second generation of cotton mask sheets appeared. Because it is a natural fiber, skin irritation is reduced, and its absorbency and adhesion are superior to non-woven fabrics. Since then, water-soluble hydrogel sheets, which are active ingredient delivery materials, have become popular. Recently, the 4th generation bio-cellulose sheet is gaining popularity.

On the other hand, Korean Patent Registration No. 10-1609895 introduces a skin-covering sheet for impregnating cosmetics made of non-woven fabric in which polyethylene/polyester composite split yarns containing polyethylene ultrafine fibers and hydrophilic cellulose fibers are mixed and entangled with water.

Since the above prior art simply blends and entangles different types of materials, it is difficult to expect effects according to the characteristics of each material.

In addition, Korean Patent Registration No. 10-0820073 uses a multi-layered cellulose structure in which cellulose fibers are used as an intermediate absorption layer and both outer surfaces are laminated with cellulose sheets, thereby providing high absorption and moisturizing power and excellent flexibility to the skin. A nonwoven fabric having excellent adhesion to the skin and a nonwoven fabric mask using the same are introduced.

In the prior art, since layers are composed of cellulose having the same material but different shapes, it is difficult to expect different functions for each layer.

In order to solve this problem, in the present invention, a non-woven fabric is composed of a moisturizing and water-repellent 2-layer, so that when applied to the skin, it has excellent essence skin transmission power, while the water-repellent layer prevents drying due to moisture loss to the outside to retain moisture It is to provide a 2-layer nonwoven fabric sheet with excellent moisturizing and water repellent functions.

In addition, the present invention is to provide a mask pack using a 2-layer non-woven fabric sheet having excellent moisturizing and water-repellent functions.

In order to solve the above problems, the present invention is a two-layer nonwoven fabric sheet laminated with a moisture-repellent nonwoven fabric layer and a water-repellent nonwoven fabric layer, wherein the moisture-repellent nonwoven fabric layer is composed of hydrophilic polyester-based resin fibers, and among the hard segments 1,4-Butanediol is used as the diol component and terephthalic acid is used as the dicarbonic acid component, and polyethylene glycol (PEG) is used as the soft segment polyol. The polyol has a molecular weight of 2000 to 5000 and is composed of 30 to 70% by weight compared to the hydrophilic polyester resin, and the water-repellent functional nonwoven fabric layer is composed of water-repellent polyester resin fibers, and diol in the hard segment 1,4-Butanediol and Terephthalic acid are used as components, dicarbonic acid, and polyethylene glycol (PEG) or polytetramethylene as soft segment polyol. glycol (PTMG), the PEG molecular weight is 100 to 1000, and is composed of 5 to 50% by weight compared to the water-repellent polyester resin, and the PTMG molecular weight is 100 to 3000, 30 to 70% by weight compared to the water-repellent polyester resin It provides a 2-layer non-woven fabric sheet with moisturizing and water-repellent functions characterized by being composed of.

In addition, the present invention provides a two-layer nonwoven fabric sheet having moisturizing and water-repellent functions, characterized in that the moisture content of the hydrophilic and water-repellent polyester resin fibers in the polymerization process is 2 to 7% and 0.01 to 1%, respectively.

In addition, the present invention provides a two-layer nonwoven fabric sheet having moisturizing and water repellent functions, characterized in that the moisturizing nonwoven fabric layer has a water absorption rate of 130 to 200%.

In addition, the present invention provides a two-layer non-woven fabric sheet having moisturizing and water-repellent functions, characterized in that the water-repellent non-woven fabric layer has a water absorption rate of 50 to 130%.

In addition, the present invention provides a mask pack composed of a 2-layer non-woven fabric sheet having moisturizing and water-repellent functions.

In the present invention, a polyester nonwoven fabric having excellent moisturizing properties and a polyester nonwoven fabric having water repellent properties are composed of a 2-layer through spunbond spinning, and when applied as a mask pack sheet, the pack agent has excellent skin transmission power and moisture holding power. It prevents drying of the pack agent through the water-repellent layer and has the effect of having air permeability.

1 is a cross-sectional view of a 2-layer nonwoven fabric sheet having moisturizing and water repellent functions according to the present invention.

As used herein, the terms about, substantially, etc., of degree, are used at or close to the value when manufacturing and material tolerances inherent in the referenced meaning are given, and are used in an accurate or Absolute numbers are used to prevent exploitation by unscrupulous infringers of the stated disclosure.

The present invention is a two-layer nonwoven fabric sheet laminated with a nonwoven fabric layer with a moisturizing function and a nonwoven fabric layer with a water repellent function, wherein the nonwoven fabric layer with a moisturizing function is composed of hydrophilic polyester-based resin fibers, and a diol component in the hard segment Terephthalic acid is used as a component of 1,4-butanediol and dicarbonic acid, and the soft segment polyol is polyethylene glycol (PEG), and the molecular weight of the polyol is 2000 to 5000 and is composed of 30 to 70% by weight compared to the hydrophilic polyester resin,

The water-repellent functional nonwoven fabric layer is composed of water-repellent polyester-based resin fibers,

In the hard segment, 1,4-butanediol is used as the diol component and terephthalic acid is used as the dicarbonic acid component, and polyethylene glycol is used as the soft segment polyol. (PEG) or polytetramethylene glycol (PTMG), the PEG molecular weight is 100 to 1000, and is composed of 5 to 50% by weight compared to the water-repellent polyester resin, and the PTMG molecular weight is 100 to 3000, the water-repellent polyester It is characterized by being composed of 30 to 70% by weight compared to the resin.

If the method for producing the hydrophilic polyester-based resin composition is described in detail,

The length of the molecular chain is increased by the condensation polymerization reaction of terephthalic acid and 1,4-butanediol.

In addition, polyol (Polyol), which is a soft segment, is polyethylene glycol (PEG), has a molecular weight of 2000 to 5000, and is 30 to 70% by weight compared to the hydrophilic polyester resin, has flexibility and elasticity, and has a moisture content of 2 to 7% in the polymerization process. It is characterized by having high hydrophilicity.

In addition, in the water-repellent polyester resin, increasing the length of the molecular chain by condensation polymerization of terephthalic acid and 1,4-butanediol is the same as the method for producing a hydrophilic polyester resin composition, but , Soft segment polyol (Polyol) is polyethylene glycol (PEG) or polytetramethylene glycol (PTMG), PEG molecular weight is 100 to 1000, 5 to 50% by weight compared to the water-repellent polyester resin, and PTMG molecular weight is 100 to 3000, which is 30 to 70% by weight compared to the water-repellent polyester resin, and has a water content of 0.01 to 1% in the polymerization process, which is characterized by having flexibility and elasticity while having hydrophobicity.

In the present invention, the hydrophilic and water-repellent polyester resin by the two polymerization reactions has a melting point of 180 to 210 ° C and a hardness of less than Shore D 40.

In addition, in the present invention, a nonwoven fabric is prepared by spunbond spinning of the hydrophilic and water-repellent polyester resin constructed as described above. This process includes a process of directly spinning polymers into continuous filaments, and consists of a process of randomly arranging and stacking to form a web, and a process of binding fibers and stabilizing their shapes. In this process, a thermoplastic resin such as nylon, polyester, or polypropylene may be mixed and used.

In the spinning process, the hydrophilic and water-repellent polyester resins are melted to have a certain viscosity in different spinning machines, and then supplied through an inlet. Intrinsic viscosity (IV) has a value of 0.9 to 1.5.

Thereafter, the hydrophilic and water-repellent polyester resins are spun as continuous filaments through a spinning nozzle through filter devices of different spinning machines, respectively. The spun filaments are moved to different cooling chambers, and as the filaments pass through the chambers, a flow of cooling air flows across the filaments to solidify the molten filaments. In the manufacturing process of the spunbond nonwoven fabric, unlike the godet method used in typical fiber spinning, high-speed airflow is supplied in parallel to the filaments to draw individual filaments, so the filaments are cooled and drawn in a single process.

The two types of filament fibers spun thereafter are stacked on the same net conveyor. Filament fibers using a resin having a water-repellent function are directly placed on the net conveyor to form a water-repellent nonwoven fabric layer 20, which is one layer, and the filament fibers using a resin having a moisturizing function on the water-repellent nonwoven fabric layer 20 It is placed on top to form another layer, the moisturizing function nonwoven fabric layer 10. The two layers of nonwoven fabric stacked on the net conveyor are pressed at 140 to 160° C. on calender rolls. Bundling is imparted to this process, and it is compressed into a single sheet of nonwoven fabric. Afterwards, the compressed non-woven fabric is wound on a winding machine to complete the manufacturing process.

The compressed 2-layer nonwoven fabric sheet is made of fibers having an average diameter of 10 to 40 μm, and a weight per unit area is 25 to 200 g / m 2 . In addition, the tensile strength is 1 to 10 MPa and the load is characterized in that 0.1 to 10 Kgf.

The 2-layer nonwoven fabric of the present invention was provided with two functions of moisturizing and water repellent by preparing a 2-layer nonwoven fabric sheet by the spunbond process using two types of polyester resins having excellent moisturizing and water repellent power. The moisture retention and water repellency of the 2-layer nonwoven fabric of the present invention are characterized by the difference in water absorption rate of the polyester resin.

The water absorption rate of the moisturizing nonwoven fabric layer 10 is appropriately 130 to 200% or more, preferably 150% or more. The water absorption rate of the water-repellent functional nonwoven fabric layer 20 is preferably 50% to 130% or less. In addition, in order to provide air permeability and skin adhesion when wearing a mask pack, the diameter of the constituent fibers of the 2-layer nonwoven fabric sheet is appropriate to be 40 μm or less, and preferably 25 μm or less.

Features and other advantages of the present description as described above will become more apparent from the following examples, which are described for illustrative purposes only and cannot be construed as limiting or limiting the scope of protection of the present invention. .

Example One

In a typical spunbond spinning facility, the moisture-repellent nonwoven fabric layer has a melting temperature of 185°C, an intrinsic viscosity (IV) of 1.4, and a hydrophilic polyester-based resin (135A) with a process moisture content of 3.0%. A water-repellent polyester-based resin (160A) having a viscosity (IV) of 1.2 and a process moisture content of 0.06% is introduced into the raw material inlet, and spunbond spinning is performed at a spinning extruder temperature of 245°C.

In the case of the moisture-retaining nonwoven fabric layer in the spunbond process, the spinning temperature was carried out at 240 ° C. In addition to the spinning conditions, the gear pump is 30 rpm, the QS air volume is 550 rpm, and the suction is 450 rpm. In the case of the water-repellent functional nonwoven fabric layer, the spinning temperature was carried out at 220 ° C. In addition to the spinning conditions, the gear pump is 10 rpm, the QS air volume is 450 rpm, and the suction is 360 rpm. The two types of filament fibers spun through the spinning nozzle are laminated on a moving net conveyor, and then pressed at a speed of 50 m/min on a calender roll at a temperature of 150 ° C to give the spunbond nonwoven fabric consolidation, and then a winder at a speed of 50 m/min. to prepare a 2-layer non-woven fabric sheet with moisturizing and water repellent functions.

The moisture-repellent and water-repellent 2-layer nonwoven fabric sheet prepared in this way was analyzed for liquid absorption, moisture retention, tensile strength, and elongation at break by the above analysis method, and the results are shown in Table 1.

Example 2

In Example 1, the water-repellent non-woven fabric layer was formed by using a hydrophilic polyester-based resin (135P) having a different composition and having a water content of 5.0%. proceed

The moisture-repellent and water-repellent 2-layer nonwoven fabric sheet prepared in this way was analyzed for liquid absorption, moisture retention, tensile strength, and elongation at break by the above analysis method, and the results are shown in Table 1.

Example 3

In Example 2, spunbond spinning was performed on the water-repellent nonwoven fabric layer using a water-repellent polyester resin (180A) having a process moisture content of 0.03% of a different composition.

The moisture-repellent and water-repellent 2-layer nonwoven fabric sheet prepared in this way was analyzed for liquid absorption, moisture retention, tensile strength, and elongation at break by the above analysis method, and the results are shown in Table 1.

comparative example 1-4

1-layer spunbond spinning was performed under the same spinning conditions using the four hydrophilic and water-repellent polyester resins (135A, 135P, 160A, and 180A) used in the examples.

The 1-layer nonwoven fabric prepared in this way was analyzed for liquid absorption, moisture retention, tensile strength, and elongation at break by the above analysis method, and the results are shown in Table 1.

◎ liquid absorption

Liquid absorption analysis method: Cut the nonwoven fabric into a square of 10X10cm and weigh it (W1). After soaking the cut non-woven fabric sufficiently in the essence, take it out and weigh it (W2). The value of (W2-W1)/W1X100 is taken as liquid absorption (unit: %).

◎ Moisture retention

Moisturizing retention analysis method: A non-woven fabric was perforated in the shape of a face and immersed in 20 g of essence, and a moisturizing layer was attached to the face, and the time until drying after wearing was measured.

Properties
division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 type 2-Layer 1-Layer composition
hydrophilic 135A 135P 135P 135A 135P - - water repellent 160A 160A 180A - - 160A 160A basis weight gsm 70 70 70 70 70 70 70 thickness ㎛ 159 135 146 173 186 130 128 absorptive % 1038 1162 1085 1051 1334 1001 983 Moisture retention minute 105 130 115 45 60 25 15

Table 1 shows the result values for the liquid absorption and moisture retention of the nonwoven fabric sheet composed of a moisturizing and water repellent 2-layer. Examples are 2-Layer non-woven fabric sheets, Comparative Examples are 1-Layer non-woven fabric sheets, and it can be seen that the Examples have similar liquid absorbency compared to the Comparative Examples, but have significantly better moisture retention over time.

The present invention described above is not limited by the foregoing embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within a range that does not deviate from the technical spirit of the present invention. It will be clear to those who have knowledge of

10: Moisturizing non-woven fabric layer
20: water-repellent non-woven fabric layer

Claims (5)

In the two-layer nonwoven fabric sheet laminated with the moisturizing nonwoven fabric layer and the water repellent nonwoven fabric layer,
The moisturizing non-woven fabric layer is composed of hydrophilic polyester resin fibers,
In the hard segment, 1,4-butanediol is used as the diol component and terephthalic acid is used as the dicarbonic acid component, and polyethylene glycol is used as the soft segment polyol. (PEG), and the molecular weight of the polyol is 2000 to 5000 and is composed of 30 to 70% by weight compared to the hydrophilic polyester resin,
The water-repellent functional nonwoven fabric layer is composed of water-repellent polyester-based resin fibers,
In the hard segment, 1,4-butanediol is used as the diol component and terephthalic acid is used as the dicarbonic acid component, and polyethylene glycol is used as the soft segment polyol. (PEG) or polytetramethylene glycol (PTMG), the PEG molecular weight is 100 to 1000, and is composed of 5 to 50% by weight compared to the water-repellent polyester resin, and the PTMG molecular weight is 100 to 3000, the water-repellent polyester A 2-layer nonwoven fabric sheet with moisturizing and water repellent functions, characterized by being composed of 30 to 70% by weight compared to resin.
According to claim 1,
A two-layer nonwoven fabric sheet with moisturizing and water-repellent functions, characterized in that the moisture content of the polymerization process of the hydrophilic and water-repellent polyester-based resin fibers is 2 to 7% and 0.01 to 1%, respectively.
According to claim 1
The moisturizing non-woven fabric layer is a 2-layer non-woven fabric sheet with moisturizing and water-repellent functions, characterized in that the moisture absorption rate is 130 to 200%.
According to claim 1
The water-repellent non-woven fabric layer is a 2-layer non-woven fabric sheet with moisturizing and water-repellent functions, characterized in that the water absorption rate is 50 to 130%.
A mask pack composed of a 2-layer non-woven fabric sheet having moisturizing and water-repellent functions according to claim 1 or 2.

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