KR100843559B1 - Artificial intelligence type moisture-permeable and waterproof film, and process for preparing the same - Google Patents

Abstract

The present invention relates to an artificial permeable waterproof film which can improve moisture permeability and change moisture permeability according to temperature change, and is mainly attached to clothing that is actively moving when the body exercises, such as casual wear, hats, shoes, and the temperature of the body. It is necessary to exhibit high moisture permeability when the temperature rises, and maintain the optimum physical condition while preventing the sudden temperature drop by using the blood circulation enhancement function peculiar to the moisture permeability when stopped. To this end, by adding a far-infrared radiating material, the far-infrared ray is capable of quickly discharging moisture out of the body by utilizing a feature of activating water molecule movement as the moisture-permeable waterproof film increases to a high temperature. Various parts such as construction materials requiring moisture-permeable waterproof function such as tents and hats It can be applied.

Breathable waterproof film

Description

Artificial intelligence type moisture-permeable waterproof film, and a method for manufacturing the same {Artificial intelligence type moisture-permeable and waterproof film, and process for preparing the same}

1 is a detailed view of a blown extrusion apparatus for producing the moisture-permeable waterproof film of the present invention.

Figure 2 is a detailed view of the T-die Extrusion apparatus for producing a moisture-permeable waterproof film of the present invention.

Figure 3 is a process chart before extrusion for producing a moisture-permeable waterproof film of the present invention.

The present invention relates to a moisture-permeable waterproof film, and more particularly, to a moisture-permeable moisture-proof film that can change moisture permeability according to temperature change and emits far-infrared radiation.

Artificial breathable waterproof film of the present invention is a product mainly attached to products worn when the body exercise such as casual wear, hats, shoes.

In general, the moisture-permeable waterproof film is largely divided into four materials. Firstly, expanded polytetrafluoroethylene (E-PTFE), a film of fluorine resin system, secondly, a polyester film, and thirdly, a polyurethane is dissolved in a solvent and coated in a liquid fabric to form a water or heat. Four representative materials are a film and a film which finally melts and extrudes a thermoplastic polyurethane.

In Korea Patent No. 403451, a low density hydrophobic synthetic resin fabric is cured with a medium density hydrophilic two-component polyurethane adhesive layer at 70 ° C. for one day, and a high density one-component polyurethane resin layer is formed to form a temperature-sensitive fabric. The manufacturing method is disclosed.

Korean Patent Laid-Open Publication No. 2004-110653 discloses a method of preparing a resin for coating by adding a phase-transfer microcapsule to a polyurethane resin, coating it on a fabric, and then manufacturing the wet type to solidify with water.

It is an object of the present invention to apply the principle of far-infrared rays specific to the moisture-permeable waterproof film to increase the moisture permeability and change the moisture permeability according to the temperature change, and to provide an intelligent moisture-proof waterproof film of the pollution-free type that emits far-infrared radiation materials.

It is another object of the present invention to provide a method for manufacturing an artificial permeable waterproof film which can produce the function of artificial intelligence at a low cost while its manufacturing method is simple.

The present invention provides a moisture-permeable waterproof film comprising a far-infrared radiation substance in a film having moisture permeability and water resistance at the same time to achieve the above object.

Far-infrared radiation material used in the present invention is preferably kaolin, tourmaline or a mixture thereof having a far-infrared emissivity of gemstone of 0.93% or more.

The content of the far-infrared radiating material used in the present invention is preferably 0.1 to 20% by weight based on the total weight of the film.

The reason is that when the far infrared ray emitting material is used at less than 0.1% by weight, the moisture permeability measurement results show little effect. Also, when the far infrared ray emitting material is used at more than 20% by weight, the content is too high to form a film. In addition, the screw and the cylinder in the extruder are worn out, and even when molded into a film, it is difficult to use because of low productability due to the decrease in tear strength.

The particle size of the far-infrared radiating material used in the present invention is preferably 3,000 to 120 Mesh (0.005 to 0.117 mm).

The reason is that when the particle size of the far-infrared radiation substance exceeds 120 mesh, the grain size is so large that fine grains appear on the film, and the tearing strength decreases when forming into a film, and the particles of the far-infrared radiation substance If the size is less than 3,000 mesh, the particle size is so small that rheologically agglomeration of far-infrared additives occurs, which makes the molding difficult by blocking the inside of the machine (cylinder, screw, screen changer).

The film material used in the present invention is thermoplastic polyurethane (TPU), polyester, liquid polyurethane, etc. which are manufactured by extrusion by a dry method.

In particular, thermoplastic polyurethane elastomer (Elastomer) is a polymer material composed of isocyanate, polyol, and chain extender, has high elasticity with excellent resilience, high elongation rate of 400 to 800%, cold resistance, flame resistance, oil resistance, antibacterial resistance, high It is an engineering plastic that has various functions such as tensile strength, sound insulation, absorbency, vacuum forming, thermal processing, high frequency adhesiveness, sewing processability, and has 2 to 5 times higher mechanical properties than rubber and general plastic. It is suitable as a raw material of the moisture-permeable waterproof film which concerns on this invention.

In addition, the present invention provides a method for producing a moisture-permeable waterproof film, which is prepared in the form of a film by using a dry method by extrusion after adding a far-infrared radiation substance to the moisture-permeable waterproof film raw material.

The extrusion method used in the present invention is blown extrusion or T-die extrusion.

The present invention relates to a temperature-reactive artificial breathable waterproof film that can improve the moisture permeability and change the moisture permeability according to the temperature change, and is mainly attached to active clothing such as sportswear, and the temperature of the body increases when the temperature increases. It is necessary to show the moisture permeability, and when it is stopped, the moisture permeability is maintained at an appropriate level, and by using the blood circulation enhancement function peculiar to the far infrared, it is configured to maintain the optimal physical condition while preventing rapid temperature drop. By adding a substance, the far-infrared ray is able to quickly discharge moisture out of the body by utilizing the feature of activating water molecule movement as the moisture-permeable waterproof film becomes high temperature.

The artificial breathable waterproof film of the present invention can be applied to various parts such as sportswear military uniforms, tents, hats, construction materials requiring the waterproof waterproof function.

In addition, the artificial moisture-permeable waterproof film of the present invention contains far-infrared radiation material, thereby increasing the moisture permeability of the conventional moisture-permeable waterproof film when the body temperature rises as the body is actively active by using the reactivity of the far-infrared vapor with water. In addition, it can contribute to the promotion of health by smoothing metabolism, and can also overcome performance differences with developed countries in permeability.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a detailed view of a blown extrusion device for producing a film of the present invention, the blown extrusion process using the device is as follows.

The melted resin in the barrel of the extruder 1 passes through a circular die 2 and is extruded in a tube state, and the air 3 is expanded in the tube, and at the same time, an air ring Cool air is blown out of the tube through (4) to form a hollow cylinder called Bubble (5).

At this time, if the width of the film to be obtained is determined, no further air is introduced into the tube.

The bubble is taken off in a nip roll via a flap board 6, a haul-off unit 7, a pretreatment unit 8 and a cutting unit 9. Winding through the winder (Winder) (10) will be wound into two layers of film.

At this time, the width of the film is determined from the bubble size, when the extrusion amount is constant the thickness can be adjusted by the nip roll speed. Blown extruded films are usually processed by the inflation method, but sometimes by the deflation method.

FIG. 2 is a detailed view of a T-die extrusion apparatus for manufacturing a film of the present invention. The blown extrusion process using the apparatus disclosed in Korean Patent Registration No. 255875 is as follows.

The dried resin supplied from the hopper 11 is rotated in the first cylinder 13 driven by the motor 12 at a uniform pressure regardless of the particle size by the twin screws 14 and 14 '. It is pushed into the 2nd cylinder 21 installed perpendicularly to the extruder 31, and the 2nd cylinder 21 is extruded by the rotation of the supply screw 23 driven by another motor 22. The resin particles introduced from the first cylinder 13 are supplied into the mold 31 at a constant pressure.

In the present invention, a screw that rotates inside the first cylinder 13 is used as the twin screws 14 and 14 ', but in the embodiment, it can be used selectively among the single screw or twin screw.

Resin particles entered into the extruder 31 by the supply screw 23 are driven by the rotation of the extrusion screw 33 driven by the prime mover 32 installed in the extruder 31. While moving toward the head on which the head 34 is installed, it is melted while passing through the inside of the extruder cylinder 36 with the plurality of heaters 35 divided therefrom, and eventually from the die 34 mounted on the head. Extruded in a film form.

In general, in the case of supplying the resin particles supplied to the hopper 11 by a single screw, not only the resin particles having different particle diameters supplied from the hopper 11 are mixed evenly, but also generated due to the difference in particle diameters. Pushing occurs and the amount of resin supplied to the second cylinder 21 becomes nonuniform, so that the twin cylinders 14 and 14 'are used inside the first cylinder 13 to the second cylinder 21. The feed rate can be made constant regardless of the size of the particles.

The supply screw 23 installed inside the second cylinder 21 continues to be fixed by a predetermined amount in a state in which the resin particles supplied from the first cylinder 13 are rotated and are not affected by the pressure of the resin amount. To feed the extruder.

As described above, the resin particles supplied to the inside of the extruder 31 slowly move forward by the extrusion screw 33, and the heat of friction generated by the particles and particles, the screw and the particles, and the extruder cylinder 36. The resin melted and completely melted by the heat supplied from the plurality of heaters 35 provided outside of the plural is discharged into the die 34 through the head to form a film. All this is a dry method.

Figure 3 is a process diagram before extrusion for producing the film of the present invention, after mixing the film raw materials and the additives in a mixer, the moisture in the dehumidifier is removed and fed through the hopper to the extruder.

Example 1

After mixing and dehumidifying 97% by weight of TPU resin and 3% by weight of tourmaline of 1,000 mesh, a moisture-permeable waterproof film having a thickness of 20 μm was prepared using a Ti-die extruder shown in FIG. 2.

The tourmaline used in this example was composed of the composition shown in Table 1, emitted far infrared rays of 5 to 20 ㎛ wavelength, far infrared emissivity was 92.7%.

ingredient Content (% by weight) Sodium (Na) Nickel (Ni) Iron (Fe) Magnesium (Mg) Aluminum (Al) Boron (B) Silicon (Si) Oxygen (O) Hydrogen (H) 2.5 2.3--17.9 3.6 18.7 54.6 0.4 Sum 100

Example 2

After mixing and dehumidifying 97% by weight of TPU resin and 3% by weight of kaolin of 1,000 Mesh, a moisture-permeable waterproof film having a thickness of 20 μm was prepared using a Ti-die extruder shown in FIG. 2.

Kaolin used in this example was composed of illite kaolin, the composition shown in Table 2, and emitted far infrared rays of 5 to 20 ㎛ wavelength, far infrared emissivity was 93.0%.

ingredient Content (% by weight) SiO ₂ Al ₂ O ₃ Fe ₂ O ₃ CaO MgO K ₂ O Na ₂ O Other  52.3 29.3 2.1 0.7 0.9 4.5 2.7 7.5 Sum 100

[Test Example]

Tests were conducted on two materials that exhibit far-infrared radiation, and the same tendency was observed in the function of the far-infrared emission.

When kaolin was added to the moisture-permeable waterproof raw material, the moisture permeability increased proportionally as the temperature increased. When the far-infrared particles come into contact with water, they accelerate the water molecule movement and affect the permeability. The results of analyzing the impact of water vapor per test method are as follows.

1.Tested by ASTM E96-2000, 32 ° C, 50% humidity, 24 hours, Watercup method.

1) 1,062 (g / ㎡ · 24hr) for 20㎛ film made of general moisture-permeable waterproof raw material

2) 1,168 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

2. Tested by ASTM E96-2000, 32 ° C, 50% humidity, 24 hours, Inverted Watercup method.

1) 10,519 (g / ㎡ · 24hr) for 20㎛ film made from general moisture-permeable waterproof raw material

2) 12,077 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

3. Test moisture absorption after 1 hour at KS K0594, 40 ℃, 90% humidity.

1) 5,007 (g / ㎡ · 24hr) for 20㎛ film made of general moisture-permeable waterproof raw material

2) 5,456 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% of kaolin

As described above, the moisture-permeable waterproof film prescribed with far-infrared radiation substance at 30 ° C. or higher showed about 10% moisture permeability improvement compared to the film not prescribed.

Next, the amount of change in moisture vapor permeability was tested. Conditions were set to 23 ° C., 32 ° C. and 38 ° C., and humidity was set to 50%. The other types of moisture cups were tested using a moisture cup specified in ASTM E96.

1. 23 ° C, 50% humidity, 24 hours, tested by Watercup method.

1) 652 (g / ㎡ · 24hr) for film made of general moisture-permeable waterproof material

2) 647 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% of kaolin

2. 23 ° C, 50% humidity, 24 hours, tested by Inverted Watercup method.

1) 6,638 (g / ㎡ · 24hr) for 20㎛ film made of general moisture-permeable waterproof raw material

2) 6,715 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

3. 32 ° C, 50% humidity, 24 hours, tested by Watercup method.

1) 1,062 (g / ㎡ · 24hr) for 20㎛ film made of general moisture-permeable waterproof raw material

2) 1,168 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

4. 32 ° C, 50% humidity, 24 hours, tested by Inverted Watercup method.

1) 10,519 (g / ㎡ · 24hr) for 20㎛ film made from general moisture-permeable waterproof raw material

2) 12,077 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

5. 38 ° C., 50% humidity, 24 hours, tested by Watercup method.

1) 1,588 (g / ㎡ · 24hr) for 20㎛ film made of general moisture-permeable waterproof raw material

2) 1,731 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

6. 38 ° C, 50% humidity, 24 hours, tested by Inverted Watercup method.

1) 17,445 (g / ㎡ · 24hr) for 20㎛ film made of general moisture-permeable waterproof raw material

2) 20,259 (g / ㎡ · 24hr) for 20㎛ film made of moisture-permeable waterproof raw material with 3% kaolin

As a result, it can be seen from the experiment that at low temperature, far-infrared rays do not contribute to the activation of water molecule movement but maintain phenomena and then assist water molecule movement to increase moisture permeability and increase moisture permeability as the temperature rises. there was.

The moisture-permeable waterproof film according to the present invention is mainly attached to active clothing such as sportswear, and it is necessary to exhibit high moisture permeability when the temperature in the body rises, and when stopped, the moisture permeability maintains an appropriate level, and is unique to far infrared rays. It is designed to maintain the optimal body condition by preventing the rapid decrease in body temperature by improving blood circulation function, and by adding far-infrared radiation substance, far-infrared rays activates water molecule movement as the moisture-permeable waterproof film gets high temperature. Moisture can be discharged quickly, and thus it can be applied to various parts such as construction materials that require moisture-permeable waterproof functions such as sportswear, military uniforms, tents, and hats.

In addition, the moisture-permeable waterproof film of the present invention contains far-infrared radiating material, thereby increasing the moisture permeability of the existing moisture-permeable waterproof film and physically budding when the body temperature increases as the body is actively active by using the reactivity of the far-infrared vapor with water. It can contribute to the improvement of health by smoothing the metabolism, and can also overcome the performance difference with developed countries in permeability.

Claims (7)

In the artificial moisture-permeable waterproof film having moisture permeability and waterproofness and containing far-infrared radiation material, The film material is at least one selected from thermoplastic polyurethane (TPU), polyester, liquid polyurethane, The far infrared radiation is kaolin, tourmaline or mixtures thereof, The content of the far infrared ray emitting material is 11 to 20% by weight based on the total weight of the film, Artificial water permeable waterproof film, characterized in that the particle size of the far-infrared radiating material is 3,000 to 120 Mesh (0.005 to 0.117 mm). delete delete delete delete delete delete

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