KR102696451B1 - Manufacturing method of lightweight polyurethane artificial leather with improved stain resistance - Google Patents
Manufacturing method of lightweight polyurethane artificial leather with improved stain resistance Download PDFInfo
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- KR102696451B1 KR102696451B1 KR1020230193139A KR20230193139A KR102696451B1 KR 102696451 B1 KR102696451 B1 KR 102696451B1 KR 1020230193139 A KR1020230193139 A KR 1020230193139A KR 20230193139 A KR20230193139 A KR 20230193139A KR 102696451 B1 KR102696451 B1 KR 102696451B1
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- South Korea
- Prior art keywords
- artificial leather
- polyurethane artificial
- weight
- parts
- stain
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 114
- 239000004814 polyurethane Substances 0.000 title claims abstract description 101
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 58
- 239000002775 capsule Substances 0.000 claims abstract description 31
- 239000011247 coating layer Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 230000003373 anti-fouling effect Effects 0.000 claims description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 18
- 229920005862 polyol Polymers 0.000 claims description 15
- 150000003077 polyols Chemical class 0.000 claims description 15
- 239000005871 repellent Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000012948 isocyanate Substances 0.000 claims description 10
- 239000001569 carbon dioxide Substances 0.000 claims description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 150000002513 isocyanates Chemical class 0.000 claims description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 6
- 239000006071 cream Substances 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 229920005906 polyester polyol Polymers 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 239000002981 blocking agent Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000001747 exhibiting effect Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 3
- 235000011037 adipic acid Nutrition 0.000 claims description 3
- 150000002009 diols Chemical class 0.000 claims description 3
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 claims description 3
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 239000010985 leather Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000000379 polymerizing effect Effects 0.000 description 3
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 2
- -1 aromatic isocyanate compound Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000011086 glassine Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- WHIVNJATOVLWBW-UHFFFAOYSA-N n-butan-2-ylidenehydroxylamine Chemical compound CCC(C)=NO WHIVNJATOVLWBW-UHFFFAOYSA-N 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- AOHWUPJPMBURNR-UHFFFAOYSA-N N=C=O.N=C=O.CC(=C)C=C Chemical compound N=C=O.N=C=O.CC(=C)C=C AOHWUPJPMBURNR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- FJQXCDYVZAHXNS-UHFFFAOYSA-N methadone hydrochloride Chemical compound Cl.C=1C=CC=CC=1C(CC(C)N(C)C)(C(=O)CC)C1=CC=CC=C1 FJQXCDYVZAHXNS-UHFFFAOYSA-N 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000021243 milk fat Nutrition 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0081—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments by wave energy or particle radiation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/068—Polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2207/00—Treatments by energy or chemical effects
- D06N2207/12—Treatments by energy or chemical effects by wave energy or particle radiation
- D06N2207/123—Treatments by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation, e.g. IR, UV, actinic light, laser, X-ray, gamma-ray, microwave, radio frequency
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
본 발명은 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법에 관한 것으로, 더욱 상세하게는 경량성 폴리우레탄 인조피혁을 수성 폴리우레탄과 팽창성 캡슐이 함유된 방오성 조성물에 함침하여 방오성 조성물을 코팅하는 방오성조성물코팅단계, 상기 방오성조성물코팅단계를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 가압 망글롤러에 통과시켜 방오성 조성물로 이루어진 코팅층을 균일화하는 코팅층균일화단계, 상기 코팅층균일화단계를 통해 코팅층이 균일화된 경량성 폴리우레탄 인조피혁을 가열하는 가열단계, 상기 가열단계를 통해 가열된 경량성 폴리우레탄 인조피혁을 냉각하는 냉각단계 및 상기 냉각단계를 통해 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 촉감을 조절하는 촉감조절단계로 이루어진다.
상기의 과정을 통해 제조되는 폴리우레탄 인조피혁은 우수한 방오성능과 경량성을 나타낼 뿐만 아니라, 탄력성과 표면감촉이 향상된다.The present invention relates to a method for manufacturing lightweight polyurethane artificial leather with improved stain-proofing properties, and more specifically, the method comprises a stain-proofing composition coating step of impregnating lightweight polyurethane artificial leather with a stain-proofing composition containing water-based polyurethane and an expandable capsule to coat the stain-proofing composition, a coating layer uniformization step of passing the lightweight polyurethane artificial leather coated with the stain-proofing composition through the stain-proofing composition coating step through a pressurized mangle roller to uniformize a coating layer made of the stain-proofing composition, a heating step of heating the lightweight polyurethane artificial leather whose coating layer is uniformized through the coating layer uniformization step, a cooling step of cooling the lightweight polyurethane artificial leather heated through the heating step, and a touch control step of controlling touch by passing the lightweight polyurethane artificial leather cooled through the cooling step through a guide roller.
The polyurethane artificial leather manufactured through the above process not only exhibits excellent stain-proofing performance and lightness, but also has improved elasticity and surface feel.
Description
본 발명은 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법에 관한 것으로, 더욱 상세하게는 우수한 방오성능과 경량성을 나타낼 뿐만 아니라, 탄력성과 표면감촉이 향상된 인조피혁을 제공하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법에 관한 것이다.The present invention relates to a method for producing lightweight polyurethane artificial leather with improved stain resistance, and more specifically, to a method for producing lightweight polyurethane artificial leather with improved stain resistance which not only exhibits excellent stain resistance and lightness, but also provides artificial leather with improved elasticity and surface feel.
인조피혁은 입체구조를 가진 극세섬유 부직포를 기포(基布)로 하고 폴리우레탄 수지와의 삼차원 구조에 의해 전체로서 미세한 다공구조로 되어 있어서 천연피혁과 흡사한 부드러운 촉감 및 독특한 외관을 지니고 있으며, 신발, 의류, 장갑, 잡화, 가구 및 자동차 내장재 등과 같은 다양한 분야에 널리 사용되고 있다.Artificial leather is made of a three-dimensional structure of ultra-fine fiber nonwoven fabric as a base fabric and a three-dimensional structure with polyurethane resin, creating a fine porous structure as a whole. It has a soft feel and a unique appearance similar to natural leather, and is widely used in various fields such as shoes, clothing, gloves, miscellaneous goods, furniture, and automobile interior materials.
이러한 인조피혁으로서 나일론 레더(nylon leather), 폴리염화비닐 레더(PVC leather), 폴리우레탄 건식 레더(PU dry type leather) 등 많은 종류의 인조피혁이 출시되고 있으며, 극세섬유로 구성된 부직포에 폴리우레탄 수지 또는 아미노계 수지 등을 단독 또는 공중합형으로 적용한 인조피혁의 개발은 천연피혁 대체품의 용도뿐만 아니라 천연피혁의 단점을 보완할 수 있어 최고급 패션소재에 적용되는 등 그 수요와 영역이 급속도로 확대되고 있다.Many types of artificial leather, such as nylon leather, polyvinyl chloride (PVC) leather, and polyurethane dry type leather, have been released, and the development of artificial leather by applying polyurethane resin or amino resin, alone or in copolymer form, to nonwoven fabric composed of ultrafine fibers is rapidly expanding its demand and scope, not only as a substitute for natural leather, but also as a top-quality fashion material that can complement the shortcomings of natural leather.
그러나, 종래에 폴리우레탄 인조피혁은 디메틸포름아마이드(dimethylformamide, DMF)와 같은 유기용매 하에서 우레탄 원료인 폴리올(polyol), 이소시아네이트(isocyanate), 사슬연장제(chain extender) 등을 중합하여 제조되는데, 유기용매인 디메틸포름아마이드를 반응매개체로 사용되거나 희석용매로 사용하므로 제조 및 적용 과정에서 유해한 유기용매의 방출로 인한 대기, 수질오염 등의 환경적인 문제를 야기하고 인체에 악영향을 끼치는 문제점이 있었다.However, conventionally, polyurethane artificial leather is manufactured by polymerizing polyol, isocyanate, chain extender, etc., which are raw materials for urethane, in the presence of an organic solvent such as dimethylformamide (DMF). However, since the organic solvent dimethylformamide is used as a reaction medium or a diluting solvent, there has been a problem in that it causes environmental problems such as air and water pollution due to the emission of harmful organic solvents during the manufacturing and application process, and has a negative effect on the human body.
또한, 종래에 폴리우레탄 인조피혁의 주재료인 용제형 폴리우레탄은 일반적으로 물에 대한 내가수분해성이 약해 장기간 수분에 노출될 경우 폴리우레탄이 가수분해될 뿐만 아니라 마찰견뢰도가 저하되며, 압축률과 복원율이 낮아 탄성력이 부족한 문제점이 있었다. In addition, solvent-based polyurethane, which is the main material of conventional polyurethane artificial leather, generally has low hydrolysis resistance to water. When exposed to moisture for a long period of time, the polyurethane is hydrolyzed, and friction fastness is reduced. In addition, there is a problem of low compression ratio and recovery rate, resulting in insufficient elasticity.
본 발명의 목적은 우수한 방오성능과 경량성을 나타낼 뿐만 아니라, 탄력성과 표면감촉이 향상된 인조피혁을 제공하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법을 제공하는 것이다.The purpose of the present invention is to provide a method for manufacturing lightweight polyurethane artificial leather with improved stain resistance, which not only exhibits excellent stain resistance and lightness, but also provides artificial leather with improved elasticity and surface feel.
본 발명의 목적은 경량성 폴리우레탄 인조피혁을 수성 폴리우레탄과 팽창성 캡슐이 함유된 방오성 조성물에 함침하여 방오성 조성물을 코팅하는 방오성조성물코팅단계, 상기 방오성조성물코팅단계를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 2.5 내지 5.0kg/cm2의 압력을 나타내는 가압 망글롤러에 통과시켜 방오성 조성물로 이루어진 코팅층을 균일화하는 코팅층균일화단계, 상기 코팅층균일화단계를 통해 코팅층이 균일화된 경량성 폴리우레탄 인조피혁을 80 내지 120℃의 온도로 10 내지 20분 동안 가열하는 가열단계, 상기 가열단계를 통해 가열된 경량성 폴리우레탄 인조피혁을 냉각하는 냉각단계 및 상기 냉각단계를 통해 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 촉감을 조절하는 촉감조절단계로 이루어지며, 상기 경량성 폴리우레탄 인조피혁은 폴리올 100 중량부, 이소시아네이트 20 내지 40 중량부, 블로킹제 8 내지 12 중량부, 중공형 캡슐 1 내지 10 중량부 및 경화제 1 내지 10 중량부로 이루어지는 것을 특징으로 하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법을 제공함에 의해 달성된다.The purpose of the present invention is to provide a method for producing a leather product, comprising: a stain-resistant composition coating step of coating a lightweight polyurethane artificial leather with a stain-resistant composition containing water-based polyurethane and an expandable capsule, by impregnating the lightweight polyurethane artificial leather with a stain-resistant composition; a coating layer uniformization step of passing the lightweight polyurethane artificial leather coated with the stain-resistant composition through the stain-resistant composition coating step through a pressurized mangle roller having a pressure of 2.5 to 5.0 kg/cm 2 to uniformize a coating layer made of the stain-resistant composition; a heating step of heating the lightweight polyurethane artificial leather, the coating layer of which has been uniformized through the coating layer uniformization step, at a temperature of 80 to 120° C. for 10 to 20 minutes; a cooling step of cooling the lightweight polyurethane artificial leather heated through the heating step; and a touch control step of controlling the touch by passing the lightweight polyurethane artificial leather cooled through the cooling step through a guide roller, wherein the lightweight polyurethane artificial leather is coated with the stain-resistant composition through the coating layer uniformization step. The invention is achieved by providing a method for producing lightweight polyurethane artificial leather with improved stain resistance, characterized in that the polyurethane artificial leather comprises 100 parts by weight of polyol, 20 to 40 parts by weight of isocyanate, 8 to 12 parts by weight of blocking agent, 1 to 10 parts by weight of hollow capsule, and 1 to 10 parts by weight of curing agent.
본 발명의 바람직한 특징에 따르면, 상기 방오성 조성물은 물 100 중량부에 수성 폴리우레탄 20 내지 30 중량부, 팽창성 캡슐 25 내지 35 중량부, 이산화탄소가 함유된 비정질 침강형 합성실리카 3 내지 7 중량부 및 크림 0.5 내지 3 중량부를 혼합하여 이루어지는 것으로 한다.According to a preferred feature of the present invention, the antifouling composition is formed by mixing 20 to 30 parts by weight of water-based polyurethane, 25 to 35 parts by weight of expandable capsules, 3 to 7 parts by weight of amorphous precipitated synthetic silica containing carbon dioxide, and 0.5 to 3 parts by weight of cream with 100 parts by weight of water.
본 발명의 더 바람직한 특징에 따르면, 상기 폴리올은 폴리에테르 폴리올, 폴리에스테르 폴리올 및 글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지며, 상기 폴리에테르 폴리올은 폴리에틸렌글리콜, 폴리카보네이트디올, 폴리프로필렌글리콜 및 폴리테트라메틸렌에테르글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지고, 상기 폴리에스테르폴리올은 아디프산과 네오펜틸글리콜을 반응시켜 제조되며, 상기 글리콜은 1,6-헥산디올, 에틸렌글리콜 및 디에틸렌글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것으로 한다.According to a more preferred feature of the present invention, the polyol comprises at least one selected from the group consisting of polyether polyol, polyester polyol and glycol, the polyether polyol comprises at least one selected from the group consisting of polyethylene glycol, polycarbonate diol, polypropylene glycol and polytetramethylene ether glycol, the polyester polyol is prepared by reacting adipic acid with neopentyl glycol, and the glycol comprises at least one selected from the group consisting of 1,6-hexanediol, ethylene glycol and diethylene glycol.
본 발명의 더욱 바람직한 특징에 따르면, 상기 중공형 캡슐은 직경이 10 내지 200 마이크로미터이며, 열가소성 수지로 이루어진 쉘(shell)의 내부에 액화 탄화수소가 충전되어 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the hollow capsule has a diameter of 10 to 200 micrometers and is formed by filling a liquefied hydrocarbon inside a shell made of a thermoplastic resin.
본 발명의 더욱 더 바람직한 특징에 따르면, 상기 팽창성 캡슐은 직경이 10 내지 30 마이크로미터이며, 염화비닐리덴으로 이루어진 쉘(shell)의 내부에 이산화 이산화탄소가 충전되어 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the expandable capsule has a diameter of 10 to 30 micrometers and is formed by filling carbon dioxide inside a shell made of vinylidene chloride.
본 발명에 따른 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법은 우수한 방오성능과 경량성을 나타낼 뿐만 아니라, 탄력성과 표면감촉이 향상된 인조피혁을 제공하는 탁월한 효과를 나타낸다.The method for manufacturing lightweight polyurethane artificial leather with improved stain-proofing according to the present invention not only exhibits excellent stain-proofing performance and lightness, but also exhibits the excellent effect of providing artificial leather with improved elasticity and surface feel.
도 1은 본 발명에 따른 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법을 나타낸 순서도이다.Figure 1 is a flow chart showing a method for manufacturing a lightweight polyurethane artificial leather with improved water-repellent properties according to the present invention.
이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, preferred embodiments of the present invention and the properties of each component will be described in detail. However, this is intended to be a detailed description to enable a person having ordinary skill in the art to which the present invention pertains to easily carry out the invention, and does not mean that the technical idea and scope of the present invention are limited thereby.
본 발명에 따른 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법은 경량성 폴리우레탄 인조피혁을 수성 폴리우레탄과 팽창성 캡슐이 함유된 방오성 조성물에 함침하여 방오성 조성물을 코팅하는 방오성조성물코팅단계(S101), 상기 방오성조성물코팅단계(S101)를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 가압 망글롤러에 통과시켜 방오성 조성물로 이루어진 코팅층을 균일화하는 코팅층균일화단계(S103), 상기 코팅층균일화단계(S103)를 통해 코팅층이 균일화된 경량성 폴리우레탄 인조피혁을 가열하는 가열단계(S105), 상기 가열단계(S105)를 통해 가열된 경량성 폴리우레탄 인조피혁을 냉각하는 냉각단계(S107) 및 상기 냉각단계(S107)를 통해 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 촉감을 조절하는 촉감조절단계(S109)로 이루어진다.The method for manufacturing lightweight polyurethane artificial leather with improved stain resistance according to the present invention comprises a stain resistance coating step (S101) of impregnating lightweight polyurethane artificial leather with a stain resistance composition containing water-based polyurethane and an expandable capsule to coat the stain resistance composition, a coating layer uniformization step (S103) of passing the lightweight polyurethane artificial leather coated with the stain resistance composition through the stain resistance composition coating step (S101) through a pressurized mangle roller to uniformize the coating layer made of the stain resistance composition, a heating step (S105) of heating the lightweight polyurethane artificial leather whose coating layer is uniformized through the coating layer uniformization step (S103), a cooling step (S107) of cooling the lightweight polyurethane artificial leather heated through the heating step (S105), and a cooling step (S107) of cooling the lightweight polyurethane artificial leather cooled through the cooling step (S107). It consists of a touch adjustment step (S109) that adjusts the touch by passing it through a guide roller.
상기 방오성조성물코팅단계(S101)는 경량성 폴리우레탄 인조피혁을 수성 폴리우레탄과 팽창성 캡슐이 함유된 방오성 조성물에 함침하여 방오성 조성물을 코팅하는 단계로, 상기 방오성 조성물은 물 100 중량부에 수성 폴리우레탄 20 내지 30 중량부, 팽창성 캡슐 25 내지 35 중량부, 이산화탄소가 함유된 비정질 침강형 합성실리카 3 내지 7 중량부 및 크림 0.5 내지 3 중량부를 혼합하여 이루어지는 것이 바람직하다.The above-mentioned stain-proofing composition coating step (S101) is a step of coating the stain-proofing composition by impregnating lightweight polyurethane artificial leather with a stain-proofing composition containing water-based polyurethane and expandable capsules, and the stain-proofing composition is preferably formed by mixing 20 to 30 parts by weight of water-based polyurethane, 25 to 35 parts by weight of expandable capsules, 3 to 7 parts by weight of amorphous precipitated synthetic silica containing carbon dioxide, and 0.5 to 3 parts by weight of cream with 100 parts by weight of water.
상기의 성분으로 이루어지는 방오성 조성물은 인조피혁의 내오염성을 월등하게 향상시킬 뿐만 아니라, 분자간의 인력과 흐름성이 향상된 수성 폴리우레탄이 혼합되기 때문에, 이후 단계에서 경량성 폴리우레탄 인조피혁의 표면에 용이하게 접착될 수 있다.The antifouling composition comprising the above components not only significantly improves the stain resistance of artificial leather, but also, because it is mixed with water-based polyurethane with improved intermolecular force and flowability, it can be easily adhered to the surface of lightweight polyurethane artificial leather in a subsequent step.
이때, 상기 팽창성 캡슐은 25 내지 35 중량부가 함유되되, 직경이 10 내지 30 마이크로미터이며, 염화비닐리덴으로 이루어진 쉘(shell)의 내부에 이산화 이산화탄소가 충전되어 이루어지는 것을 사용하는 것이 바람직한데, 상기의 팽창성 캡슐은 방오성 조성물이 코팅된 후에 경화되는 과정에서 캡슐의 팽창에 의해 인조피혁에 탄력성과 부피감을 부여하여 감성 품질을 향상시키는 역할을 하는데, 더욱 상세하게는 상기 팽창성 캡슐은 방오성 조성물이 코팅된 인조피혁을 가열하는 과정에서 팽창하면서 폴리우레탄이 고형화되고 이후 인조피혁을 냉각하는 과정에서 캡슐이 수축하면서 기공이 생성되어 다공질 구조가 형성되기 때문에, 인조피혁에 압축률과 복원율이 증가하게 되어 탄력성과 부피감을 부여할 수 있게 된다.At this time, it is preferable to use the expandable capsule containing 25 to 35 parts by weight, having a diameter of 10 to 30 micrometers, and having a shell made of vinylidene chloride filled with carbon dioxide, and the expandable capsule plays a role in improving the sensory quality by imparting elasticity and volume to the artificial leather by the expansion of the capsule during the curing process after the stain-resistant composition is coated. More specifically, the expandable capsule expands during the heating process of the artificial leather coated with the stain-resistant composition, and the polyurethane solidifies, and then during the cooling process of the artificial leather, the capsule shrinks and pores are created to form a porous structure, so that the compressibility and recovery rate of the artificial leather increase, thereby imparting elasticity and volume to the artificial leather.
상기 팽창성 캡슐의 함량이 25 중량부 미만이면 상기의 효과가 미미하며, 상기 팽창성 캡슐의 함량이 30 중량부를 초과하게 되면 상기의 효과는 크게 향상되지 않으면서 방오성 조성물로 이루어진 코팅층이 지나치게 부풀어 올라 인조피혁의 외관품질을 저하시킬 수 있기 때문에 바람직하지 못하다.If the content of the above expandable capsule is less than 25 parts by weight, the above effect is minimal, and if the content of the above expandable capsule exceeds 30 parts by weight, the above effect is not significantly improved, and the coating layer made of the antifouling composition may swell excessively, thereby lowering the appearance quality of the artificial leather, which is not preferable.
또한, 비정질 침강형 합성실리카는 3 내지 7 중량부가 함유되며, 는 나노미터 크기의 입자로서 물유리에 산을 반응시켜 제조되는데, 세공(細孔)이 없는 구형 형상이나 매우 많은 입자들이 서로 실록산(siloxane) 결합에 의해 뭉치거나 접합되어 삼차원 그물구조를 형성하여 내부공간(기공)이 형성되도록 하는 역할을 한다.In addition, amorphous precipitated synthetic silica is contained in an amount of 3 to 7 parts by weight, and is manufactured by reacting water glass with acid as nanometer-sized particles. It has a spherical shape without pores, or a large number of particles are clumped together or bonded to each other by siloxane bonds to form a three-dimensional network structure, which serves to form internal spaces (pores).
또한, 상기 크림은 0.5 내지 3 중량부가 함유되며 천연 소포제의 역할을 하는데, 우유에서 분리되고 비중이 작은 유지방 성분으로서 방오제 조성물을 인조피혁의 표면에 코팅된 후에 기포가 발생하는 것을 억제하는 역할을 한다.In addition, the cream is contained in an amount of 0.5 to 3 parts by weight and acts as a natural antifoaming agent, which is a milk fat component separated from milk and has a small specific gravity and acts to suppress the generation of bubbles after the antifouling composition is coated on the surface of artificial leather.
또한, 상기 경량성 폴리우레탄 인조피혁은 폴리올 100 중량부, 이소시아네이트 20 내지 40 중량부, 블로킹제 8 내지 12 중량부, 중공형 캡슐 1 내지 10 중량부 및 경화제 1 내지 10 중량부로 이루어지는 것이 바람직한데, 내부에 균일한 크기의 공기층이 형성되어 단열성 및 차음, 방진 효과를 얻을 수 있고, 더불어 다공성 셀(Cell) 구조를 형성하고 있어 초경량화를 나타내며, 탄성력과 촉감은 천연 피혁과 비교하여 손색이 없으며 오히려 보다 우수하다.In addition, it is preferable that the lightweight polyurethane artificial leather is composed of 100 parts by weight of polyol, 20 to 40 parts by weight of isocyanate, 8 to 12 parts by weight of blocking agent, 1 to 10 parts by weight of hollow capsule, and 1 to 10 parts by weight of curing agent, so that a uniformly sized air layer is formed inside to obtain thermal insulation, soundproofing, and dustproofing effects, and in addition, since a porous cell structure is formed, it exhibits ultra-lightness, and its elasticity and feel are comparable to those of natural leather and are actually superior to them.
이때, 상기 폴리올은 폴리에테르 폴리올, 폴리에스테르 폴리올 및 글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지며, 상기 폴리에테르 폴리올은 폴리에틸렌글리콜, 폴리카보네이트디올, 폴리프로필렌글리콜 및 폴리테트라메틸렌에테르글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지고, 상기 폴리에스테르폴리올은 아디프산과 네오펜틸글리콜을 반응시켜 제조되며, 상기 글리콜은 1,6-헥산디올, 에틸렌글리콜 및 디에틸렌글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것이 바람직하다.At this time, the polyol is preferably composed of at least one selected from the group consisting of polyether polyol, polyester polyol, and glycol, the polyether polyol is preferably composed of at least one selected from the group consisting of polyethylene glycol, polycarbonate diol, polypropylene glycol, and polytetramethylene ether glycol, the polyester polyol is produced by reacting adipic acid and neopentyl glycol, and the glycol is preferably composed of at least one selected from the group consisting of 1,6-hexanediol, ethylene glycol, and diethylene glycol.
또한, 상기 이소시아네이트는 20 내지 40 중량부가 함유되며, 폴리우레탄 제조를 위해 통상적으로 사용되는 지방족 또는 방향족 이소시아네이트 화합물을 사용할 수 있는데, 구체적으로는 헥사메틸렌 디이소시아네이트, 이소프렌 디이소시아네이트, 디시클로헥실메탄 디이소시아네이트 등으로 이루어진 그룹에서 선택된 하나 이상으로 이루어질 수 있으며, 상기 방향족 이소시아네이트 화합물은 디페닐메탄 디이소시아네이트, 나프탈렌-1,5-디이소시아네이트, 폴리페닐렌폴리메틸렌 폴리이소시아네이트, 2,4-톨릴렌 디이소시아네이트, 2,6-톨릴렌 디이소시아네이트로 이루어진 그룹에서 선택된 하나 이상으로 이루어질 수 있다.In addition, the isocyanate is contained in an amount of 20 to 40 parts by weight, and an aliphatic or aromatic isocyanate compound commonly used for producing polyurethane can be used. Specifically, the isocyanate may be composed of at least one selected from the group consisting of hexamethylene diisocyanate, isoprene diisocyanate, dicyclohexylmethane diisocyanate, and the like, and the aromatic isocyanate compound may be composed of at least one selected from the group consisting of diphenylmethane diisocyanate, naphthalene-1,5-diisocyanate, polyphenylenepolymethylene polyisocyanate, 2,4-tolylene diisocyanate, and 2,6-tolylene diisocyanate.
특히, 상기 중공형 캡슐은 1 내지 10 중량부가 함유되며, 경량성 폴리우레탄 인조피혁의 내부에 균일한 크기의 공기층을 형성하여, 단열성 및 차음, 방진 효과를 부여할 뿐만 아니라, 다공성 셀(Cell) 구조를 형성하여 초경량화를 부여하는 역할을 하는데, 상기 중공형 캡슐은 직경이 10 내지 200 마이크로미터이며, 열가소성 수지로 이루어진 쉘(shell)의 내부에 액화 탄화수소가 충전되어 이루어지는 것을 사용하는 것이 바람직하다.In particular, the hollow capsule is contained in an amount of 1 to 10 parts by weight and forms a uniformly sized air layer inside the lightweight polyurethane artificial leather, thereby providing not only thermal insulation, soundproofing, and dustproofing effects, but also forming a porous cell structure to provide ultra-lightness. It is preferable to use the hollow capsule having a diameter of 10 to 200 micrometers and having a shell made of a thermoplastic resin filled with a liquefied hydrocarbon.
상기 중공형 캡슐의 함량이 1 중량부 미만이면 상기의 효과가 미미하며, 상기 중공형 캡슐의 함량이 10 중량부를 초과하게 되면 상기의 효과는 크게 향상되지 않으면서 경량성 폴리우레탄 인조피혁의 기계적 물성이 지나치게 저하될 수 있기 때문에 바람직하지 못하다.If the content of the hollow capsule is less than 1 part by weight, the above effect is minimal, and if the content of the hollow capsule exceeds 10 parts by weight, the above effect is not significantly improved, but the mechanical properties of the lightweight polyurethane artificial leather may be excessively deteriorated, which is not preferable.
상기 코팅층균일화단계(S103)는 방오성조성물코팅단계(S101)를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 가압 망글롤러에 통과시켜 방오성 조성물로 이루어진 코팅층을 균일화하는 단계로, 상기 방오성조성물코팅단계(S101)를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 가압 망글롤러에 통과시켜 표면의 균일화 및 탈수를 진행하는 과정으로 이루어지는데, 상기 방오성조성물코팅단계(S101)를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 2.5 내지 5.0kg/cm2의 압력을 나타내는 망글롤러로 통과시키는 것이 바람직하다.The above coating layer uniformization step (S103) is a step of passing the lightweight polyurethane artificial leather coated with the antifouling composition through the antifouling composition coating step (S101) through a pressurized mangle roller to uniformize the coating layer made of the antifouling composition, and is a process of passing the lightweight polyurethane artificial leather coated with the antifouling composition through the antifouling composition coating step (S101) through a pressurized mangle roller to uniformize and dehydrate the surface. It is preferable to pass the lightweight polyurethane artificial leather coated with the antifouling composition through the antifouling composition coating step (S101) through a mangle roller having a pressure of 2.5 to 5.0 kg/ cm2 .
상기 가압 망글롤러의 압력이 2.5kg/cm2 미만인 경우에는 방오성 조성물이 경량성 폴리우레탄 인조피혁의 표면에 잔류되어 별도로 균일화 및 잔류물의 제거를 위한 표면 밀링공정이 필요하게 되며, 상기 가압 망글롤러의 압력이 5.0kg/cm2 을 초과하게 되면 상기의 효과는 크게 향상되지 않으면서 에너지 효율성적인 측면에서 바람직하지 못하다.If the pressure of the above pressurized mangle roller is less than 2.5 kg/cm 2 , the antifouling composition remains on the surface of the lightweight polyurethane artificial leather, requiring a separate surface milling process for uniformization and removal of residues. If the pressure of the above pressurized mangle roller exceeds 5.0 kg/cm 2 , the above effect is not significantly improved, and it is not desirable in terms of energy efficiency.
또한, 상기의 과정으로 이루어지는 코팅층균일화단계(S103)를 거치면, 코팅된 방오성 조성물의 50% 이상이 경량성 폴리우레탄 인조피혁의 내부로 이동하여 수분이 제거된 인조피혁이 제공될 수 있다.In addition, when the coating layer uniformization step (S103) is performed through the above process, more than 50% of the coated antifouling composition can move into the interior of the lightweight polyurethane artificial leather, thereby providing artificial leather from which moisture has been removed.
상기 가열단계(S105)는 상기 코팅층균일화단계(S103)를 통해 코팅층이 균일화된 경량성 폴리우레탄 인조피혁을 가열하는 단계로, 상기 코팅층균일화단계(S103)를 통해 코팅층이 균일화된 경량성 폴리우레탄 인조피혁에 적외선을 조사하여 80 내지 120℃의 온도로 10 내지 20분 동안 가열하는 과정으로 이루어지는데, 상기의 가열을 통해 방오성 조성물에 함유된 팽창성 캡슐이 팽창되었다가 상기 냉각단계를 통해 냉각되면 다수의 기공이 형성되어 탄력성과 표면감촉이 향상된 경량성 인조피혁이 제공될 수 있도록 하는 역할을 한다.The heating step (S105) above is a step for heating the lightweight polyurethane artificial leather whose coating layer has been made uniform through the coating layer uniformization step (S103), and comprises a process of irradiating infrared rays to the lightweight polyurethane artificial leather whose coating layer has been made uniform through the coating layer uniformization step (S103) and heating it at a temperature of 80 to 120°C for 10 to 20 minutes. Through the heating, the expandable capsules contained in the antifouling composition expand, and when cooled through the cooling step, a large number of pores are formed, which serves to provide lightweight artificial leather with improved elasticity and surface feel.
상기 가열단계(S105)의 온도가 80℃ 미만이거나 가열시간이 10분 미만이면 상기 팽창성 캡슐의 팽창이 제대로 이루어지지 않아 상기의 효과가 미미하며, 상기 가열단계의 온도가 120℃를 초과하거나 가열시간이 20분을 초과하게 되면 경량성 폴리우레탄 인조피혁의 표면에 형성된 코팅층이 손상되거나 탄화되어 방오성능이 저하될 뿐만 아니라, 인조피혁의 표면품질이 저하될 수 있기 때문에 바람직하지 못하다.If the temperature of the above heating step (S105) is less than 80°C or the heating time is less than 10 minutes, the expansion of the expandable capsule does not occur properly, so the above effect is minimal. If the temperature of the above heating step exceeds 120°C or the heating time exceeds 20 minutes, the coating layer formed on the surface of the lightweight polyurethane artificial leather may be damaged or carbonized, which may lower the antifouling performance and also lower the surface quality of the artificial leather, which is not preferable.
이때, 상기 적외선은 2.5 내지 25㎛의 파장범위를 나타내는 것을 사용하는 것이 바람직하다.At this time, it is preferable to use infrared rays having a wavelength range of 2.5 to 25㎛.
상기 냉각단계(S107)는 상기 가열단계(S105)를 통해 가열된 경량성 폴리우레탄 인조피혁을 냉각하는 단계로, 상기 가열단계(S105)를 통해 가열된 경량성 폴리우레탄 인조피혁을 상온으로 냉각하여 팽창성 캡슐에 의해 형성된 다수의 기공이 경화되어 형태를 유지할 수 있도록 하는 단계다.The above cooling step (S107) is a step of cooling the lightweight polyurethane artificial leather heated through the heating step (S105), and is a step of cooling the lightweight polyurethane artificial leather heated through the heating step (S105) to room temperature so that a plurality of pores formed by the expandable capsules can be hardened and maintain their shape.
상기 촉감조절단계(S109)는 상기 냉각단계(S107)를 통해 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 촉감을 조절하는 단계로, 상기 냉각단계(S107)를 통해 상온으로 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 원단의 표면잔털이 손상되지 않으면서 일정한 방향성을 나타내도록 하는 과정으로 이루어진다.The above-mentioned touch control step (S109) is a step for controlling the touch by passing the lightweight polyurethane artificial leather cooled through the cooling step (S107) through a guide roller, and is a process for passing the lightweight polyurethane artificial leather cooled to room temperature through the cooling step (S107) through a guide roller so that the surface fluff of the fabric is not damaged and exhibits a certain directionality.
이때, 상기 가이드롤러는 냉각된 경량성 폴리우레탄 인조피혁의 상면 및 하면에 장착되어 100 내지 1,000회/분의 속도를 가지며, 가이드롤러를 통과한 경량성 폴리우레탄 인조피혁은 천연피혁 또는 종래의 인조피혁을 제조하는 방법으로 제조된 인조피혁과 표면의 질감이 구현된다.At this time, the guide roller is mounted on the upper and lower surfaces of the cooled lightweight polyurethane artificial leather and has a speed of 100 to 1,000 times/minute, and the lightweight polyurethane artificial leather passing through the guide roller has a surface texture similar to that of natural leather or artificial leather manufactured using a conventional method for manufacturing artificial leather.
이하에서는, 본 발명에 따른 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법 및 그 제조방법으로 제조된 인조피혁의 물성을 실시예를 들어 설명하기로 한다.Hereinafter, a method for manufacturing a lightweight polyurethane artificial leather with improved water-repellent properties according to the present invention and the properties of artificial leather manufactured by the method will be described with examples.
<제조예 1> 경량성 폴리우레탄 인조피혁의 제조<Manufacturing Example 1> Manufacturing of lightweight polyurethane artificial leather
폴리올(폴리에틸렌글리콜) 100 중량부, 이소시아네이트(헥사메틸렌 디이소시아네이트) 30 중량부, 블로킹제(메틸에틸케톡심) 10 중량부, 중공형 캡슐(직경이 10 내지 200 마이크로미터이며, 열가소성 수지로 이루어진 쉘의 내부에 액화 탄화수소가 충전) 5 중량부 및 경화제(이소포론디아민) 5 중량부를 중합하여 경량성 폴리우레탄 인조피혁을 제조하였다.A lightweight polyurethane artificial leather was manufactured by polymerizing 100 parts by weight of polyol (polyethylene glycol), 30 parts by weight of isocyanate (hexamethylene diisocyanate), 10 parts by weight of blocking agent (methyl ethyl ketoxime), 5 parts by weight of hollow capsules (having a diameter of 10 to 200 micrometers and having a shell made of thermoplastic resin filled with liquefied hydrocarbon), and 5 parts by weight of a curing agent (isophorone diamine).
<제조예 2> 방오성 조성물의 제조<Manufacturing Example 2> Manufacturing of an antifouling composition
물 100 중량부에 수성 폴리우레탄 25 중량부, 팽창성 캡슐(직경이 10 내지 30 마이크로미터이며, 염화비닐리덴으로 이루어진 쉘의 내부에 이산화 이산화탄소가 충전) 30 중량부, 이산화탄소가 함유된 비정질 침강형 합성실리카 5 중량부 및 크림 2 중량부를 혼합하여 방오성 조성물을 제조하였다.An antifouling composition was prepared by mixing 25 parts by weight of water-based polyurethane, 30 parts by weight of expandable capsules (having a diameter of 10 to 30 micrometers and having a shell made of vinylidene chloride filled with carbon dioxide), 5 parts by weight of amorphous precipitated synthetic silica containing carbon dioxide, and 2 parts by weight of cream to 100 parts by weight of water.
<비교 제조예 1> 폴리우레탄 인조피혁의 제조<Comparative Manufacturing Example 1> Manufacturing of polyurethane artificial leather
폴리올(폴리에틸렌글리콜) 100 중량부, 이소시아네이트(헥사메틸렌 디이소시아네이트) 30 중량부, 블로킹제(메틸에틸케톡심) 10 중량부 및 경화제(이소포론디아민) 5 중량부를 중합하여 폴리우레탄 인조피혁을 제조하였다.Polyurethane artificial leather was manufactured by polymerizing 100 parts by weight of polyol (polyethylene glycol), 30 parts by weight of isocyanate (hexamethylene diisocyanate), 10 parts by weight of blocking agent (methyl ethyl ketoxime), and 5 parts by weight of curing agent (isophorone diamine).
<비교 제조예 2> 방오성 조성물의 제조<Comparative Manufacturing Example 2> Manufacturing of an antifouling composition
물 100 중량부에 수성 폴리우레탄 25 중량부, 이산화탄소가 함유된 비정질 침강형 합성실리카 5 중량부 및 크림 2 중량부를 혼합하여 방오성 조성물을 제조하였다.An antifouling composition was prepared by mixing 25 parts by weight of water-based polyurethane, 5 parts by weight of amorphous precipitated synthetic silica containing carbon dioxide, and 2 parts by weight of cream with 100 parts by weight of water.
<실시예 1><Example 1>
상기 제조예 1을 통해 제조된 경량성 폴리우레탄 인조피혁을 상기 제조예 2를 통해 제조된 방오성 조성물에 함침하여 방오성 조성물을 코팅하고, 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 4.0kg/cm2의 압력을 나타내는 망글롤러로 통과시켜 코팅층을 균일화하고, 코팅층이 균일화된 경량성 폴리우레탄 인조피혁에 적외선(12.5㎛ 파장)을 조사하여 100℃의 온도로 15분 동안 가열한 후에 상온으로 냉각하고, 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 방오성이 향상된 경량성 폴리우레탄 인조피혁을 제조하였다.The lightweight polyurethane artificial leather manufactured through the above Manufacturing Example 1 was impregnated with the stain-resistant composition manufactured through the above Manufacturing Example 2 to coat the stain-resistant composition, the lightweight polyurethane artificial leather coated with the stain-resistant composition was passed through a mangle roller having a pressure of 4.0 kg/cm 2 to uniformize the coating layer, the lightweight polyurethane artificial leather with the uniform coating layer was irradiated with infrared rays (wavelength 12.5 μm), heated at a temperature of 100° C. for 15 minutes, cooled to room temperature, and the cooled lightweight polyurethane artificial leather was passed through a guide roller to manufacture lightweight polyurethane artificial leather with improved stain-resistant properties.
<실시예 2><Example 2>
상기 실시예 1과 동일하게 진행하되, 2.5kg/cm2의 압력을 나타내는 망글롤러로 통과시켜 방오성이 향상된 경량성 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but lightweight polyurethane artificial leather with improved water-repellent properties was produced by passing the material through a mangle roller exhibiting a pressure of 2.5 kg/cm 2 .
<실시예 3><Example 3>
상기 실시예 1과 동일하게 진행하되, 5.0kg/cm2의 압력을 나타내는 망글롤러로 통과시켜 방오성이 향상된 경량성 폴리우레탄 인조피혁을 제조하였다.A lightweight polyurethane artificial leather with improved water-repellent properties was manufactured by proceeding in the same manner as in Example 1, but passing it through a mangle roller exhibiting a pressure of 5.0 kg/cm 2 .
<실시예 4><Example 4>
상기 실시예 1과 동일하게 진행하되, 80℃의 온도로 10분 동안 가열하여 방오성이 향상된 경량성 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but heating was performed at 80°C for 10 minutes to produce lightweight polyurethane artificial leather with improved water-repellent properties.
<실시예 5><Example 5>
상기 실시예 1과 동일하게 진행하되, 120℃의 온도로 20분 동안 가열하여 방오성이 향상된 경량성 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but heating was performed at 120°C for 20 minutes to produce lightweight polyurethane artificial leather with improved water-repellent properties.
<비교예 1><Comparative Example 1>
상기 비교 제조예 1을 통해 제조된 폴리우레탄 인조피혁을 상기 비교 제조예 2를 통해 제조된 방오성 조성물에 함침하여 방오성 조성물을 코팅하고, 방오성 조성물이 코팅된 폴리우레탄 인조피혁을 4.0kg/cm2의 압력을 나타내는 망글롤러로 통과시켜 코팅층을 균일화하고, 가이드롤러에 통과시켜 방오성이 향상된 폴리우레탄 인조피혁을 제조하였다.The polyurethane artificial leather manufactured through the above Comparative Manufacturing Example 1 was impregnated with the antifouling composition manufactured through the above Comparative Manufacturing Example 2 to coat the antifouling composition, and the polyurethane artificial leather coated with the antifouling composition was passed through a mangle roller having a pressure of 4.0 kg/cm 2 to uniformize the coating layer, and then passed through a guide roller to manufacture polyurethane artificial leather with improved antifouling properties.
<비교예 2><Comparative Example 2>
상기 실시예 1과 동일하게 진행하되, 1.0kg/cm2의 압력을 나타내는 망글롤러로 통과시켜 방오성이 향상된 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but polyurethane artificial leather with improved water-repellent properties was manufactured by passing the material through a mangle roller exhibiting a pressure of 1.0 kg/cm 2 .
<비교예 3><Comparative Example 3>
상기 실시예 1과 동일하게 진행하되, 10.0kg/cm2의 압력을 나타내는 망글롤러로 통과시켜 방오성이 향상된 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but polyurethane artificial leather with improved water-repellent properties was manufactured by passing the material through a mangle roller exhibiting a pressure of 10.0 kg/cm 2 .
<비교예 4><Comparative Example 4>
상기 실시예 1과 동일하게 진행하되, 50℃의 온도로 5분 동안 가열하여 방오성이 향상된 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but polyurethane artificial leather with improved water-repellent properties was manufactured by heating at 50°C for 5 minutes.
<비교예 5><Comparative Example 5>
상기 실시예 1과 동일하게 진행하되, 200℃의 온도로 30분 동안 가열하여 방오성이 향상된 폴리우레탄 인조피혁을 제조하였다.The same procedure as in Example 1 was followed, but polyurethane artificial leather with improved water-repellent properties was manufactured by heating at 200°C for 30 minutes.
상기 실시예 1 내지 5 및 비교예 1 내지 5를 통해 제조된 폴리우레탄 인조피혁의 방오성능을 측정하여 아래 표 2에 나타내었다.The stain-proofing performance of the polyurethane artificial leather manufactured through Examples 1 to 5 and Comparative Examples 1 to 5 was measured and shown in Table 2 below.
{단, 방오성능은 AATCC(American Association of Textile Chemists and Colorists) 규격의 오염 탈리성능 시험방법(Stain Release Management Performance Test Method)에 준하여 내오염성을 평가하는 방법을 이용하였다.{However, the stain release performance was evaluated using a method that evaluates stain resistance in accordance with the Stain Release Management Performance Test Method of the AATCC (American Association of Textile Chemists and Colorists) standards.
제조된 폴리우레탄 인조피혁 각각에 대하여, 수평으로 깐 흡수지 위에 폴리우레탄 인조피혁을 놓고, 사용 후의 엔진오일에 카본 블랙을 0.1 질량％ 첨가한 액 및 옥수수유를 각각 5 방울씩 적하한 다음, 그 위에 7.6×7.6㎝의 글라신지(glassine paper)를 덮고 그 위에 2.27 ㎏의 추를 얹은 후 60 초 후에 추와 글라신지를 제거하였다.For each manufactured polyurethane artificial leather, the polyurethane artificial leather was placed on a horizontally laid absorbent paper, and 5 drops each of a solution of used engine oil containing 0.1 mass% carbon black and corn oil were dropped, then a 7.6×7.6 cm glassine paper was covered over it, a 2.27 kg weight was placed on it, and after 60 seconds, the weight and glassine paper were removed.
실온에서 15 분간 정치한 후 시편에 밸러스트천을 추가하여 1.8 ㎏으로 하고 AATCC 표준의 WOB 세제 100 g을 사용하여 세탁기의 욕량 64 ℓ, 욕 온도 35 ℃에서 세탁하고 AATCC 표준 텀블러 건조기로 시험천을 건조하였다.After allowing to stand for 15 minutes at room temperature, ballast cloth was added to the specimen to make it 1.8 kg, and 100 g of AATCC standard WOB detergent was used to wash the specimen in a washing machine with a bath volume of 64 ℓ and a bath temperature of 35°C, and the specimen was dried in an AATCC standard tumbler dryer.
건조한 시편의 잔존 얼룩의 오염상태를 판정용 표준 사진판과 비교하여 오염 탈리성능을 해당하는 등급(아래 표 1)으로 나타내었으며, 판정용 표준 사진판은 AATCC-TM130-2000을 사용하였다.}The contamination status of the residual stains on the dried specimen was compared with the standard photographic plate for judgment, and the contamination removal performance was expressed as the corresponding grade (Table 1 below). The standard photographic plate for judgment was AATCC-TM130-2000.
<표 1><Table 1>
<표 2><Table 2>
상기 표 2에 나타낸 것처럼, 본 발명의 실시예 1 내지 5를 통해 제조된 인조피혁은 우수한 방오성능을 나타내는 것을 알 수 있다.As shown in Table 2 above, it can be seen that the artificial leather manufactured through Examples 1 to 5 of the present invention exhibits excellent anti-staining performance.
반면, 비교예 2의 경우에는 망글롤러의 압력이 지나치게 낮아 방오성 조성물의 인조피혁에 제대로 스며들지 못해 방오성능이 저하되며, 비교예 5의 경우에는 방오성 조성물로 이루어진 코팅층이 손상되어 방오성능이 저하되는 것을 알 수 있다.On the other hand, in the case of Comparative Example 2, the pressure of the mangle roller was too low, so the antifouling composition could not properly penetrate into the artificial leather, resulting in a deterioration in antifouling performance, and in the case of Comparative Example 5, the coating layer made of the antifouling composition was damaged, resulting in a deterioration in antifouling performance.
또한, 상기 실시예 1 내지 5 및 비교예 1 내지 5를 통해 제조된 폴리우레탄 인조피혁의 기계적 물성을 측정하여 아래 표 3에 나타내었다.In addition, the mechanical properties of the polyurethane artificial leather manufactured through Examples 1 to 5 and Comparative Examples 1 to 5 were measured and are shown in Table 3 below.
{단, 인조피혁의 기계적 물성은 압축률, 복원율, 인장강도 및 내마모성(급)을 측정하는 방법을 이용하였으며,{However, the mechanical properties of artificial leather were measured using a method that measures compression ratio, recovery rate, tensile strength, and wear resistance (grade).
인조피혁의 압축 탄성(두께 방향)은 압축률로 파악될 수 있으며, 압축률 측정은 원형의 압자에 900 gf/㎠의 초하중(load)을 걸고 30 초간 유지한 다음 상기 초하중을 제거한 후 30 초 경과한 시점에서의 인조피혁의 최대 두께(T1)를 1/1000 ㎜까지 측정하였다.The compressive elasticity (thickness direction) of artificial leather can be determined by the compression ratio, and the compression ratio was measured by applying a superload of 900 gf/cm2 to a circular indenter and maintaining it for 30 seconds, and then removing the superload. The maximum thickness (T1) of the artificial leather at 30 seconds after that was measured to 1/1000 mm.
다시 초하중을 30 초간 가한 후 두께 최소치(T2)를 1/1000 ㎜까지 측정하고, 이어서 초하중을 제거한 후 30 초 경과한 시점에서 인공피혁의 두께(T3)를 1/1000 ㎜까지 측정하였으며, 하기의 식을 이용하여 압축률 및 복원율을 계산하였다.After applying the initial load again for 30 seconds, the minimum thickness (T2) was measured to 1/1000 mm, and then after removing the initial load, the thickness (T3) of the artificial leather was measured to 1/1000 mm 30 seconds later, and the compression ratio and recovery ratio were calculated using the following equations.
압축률(%) = (T1-T2)/T1×100Compression ratio (%) = (T1-T2)/T1×100
복원율 = (T3-T2)/(T1-T2)×100Recovery rate = (T3-T2)/(T1-T2)×100
또한, 인장 강도는 ASTM D 5035 시험규격으로 측정하였으며, 인장강도 측정기(Instron사, 미국)를 사용하여, 속도 300㎜/min, 폭 50 ㎜, 길이 100 ㎜, 두께 08 ㎜, warp 방향의 조건으로 측정하였다.In addition, the tensile strength was measured according to the ASTM D 5035 test standard, using a tensile strength measuring device (Instron, USA) under the conditions of a speed of 300 mm/min, width of 50 mm, length of 100 mm, thickness of 0.8 mm, and warp direction.
또한, 내마모성은 Color abrasion법(Martindale 법)(ISO 12947-2:1998(E))에 의거하여 시편을 12 ㎪의 하중으로 누르고 35000 싸이클 회전시킨 후 마찰부위의 칼라 변색을 그레이 스케일(GRAY SCALE)로 판정하였다.}In addition, the wear resistance was evaluated by pressing the specimen with a load of 12 kPa and rotating it 35,000 times according to the color abrasion method (Martindale method) (ISO 12947-2:1998(E)), and then the color discoloration of the friction area was judged in gray scale.
<표 3><Table 3>
상기 표 3에 나타낸 것처럼, 본 발명의 실시예 1 내지 5를 통해 제조된 인조피혁은 비교예 1 내지 5를 통해 제조된 인조피혁에 비해, 전체적으로 고른 기계적물성을 나타내는 것을 알 수 있다.As shown in Table 3 above, it can be seen that the artificial leather manufactured through Examples 1 to 5 of the present invention exhibits overall more consistent mechanical properties than the artificial leather manufactured through Comparative Examples 1 to 5.
따라서, 본 발명에 따른 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법은 우수한 방오성능과 경량성을 나타낼 뿐만 아니라, 탄력성과 표면감촉이 향상된 인조피혁을 제공한다.Therefore, the method for manufacturing lightweight polyurethane artificial leather with improved stain resistance according to the present invention not only exhibits excellent stain resistance and lightness, but also provides artificial leather with improved elasticity and surface feel.
S101 ; 방오성조성물코팅단계
S103 ; 코팅층균일화단계
S105 ; 가열단계
S107 ; 냉각단계
S109 ; 촉감조절단계S101; Anti-fouling composition coating step
S103; Coating layer uniformization step
S105 ; Heating stage
S107 ; Cooling stage
S109; Tactile control stage
Claims (5)
상기 방오성조성물코팅단계를 통해 방오성 조성물이 코팅된 경량성 폴리우레탄 인조피혁을 2.5 내지 5.0kg/cm2의 압력을 나타내는 가압 망글롤러에 통과시켜 방오성 조성물로 이루어진 코팅층을 균일화하는 코팅층균일화단계;
상기 코팅층균일화단계를 통해 코팅층이 균일화된 경량성 폴리우레탄 인조피혁을 80 내지 120℃의 온도로 10 내지 20분 동안 가열하는 가열단계;
상기 가열단계를 통해 가열된 경량성 폴리우레탄 인조피혁을 냉각하는 냉각단계; 및
상기 냉각단계를 통해 냉각된 경량성 폴리우레탄 인조피혁을 가이드롤러에 통과시켜 촉감을 조절하는 촉감조절단계;로 이루어지며,
상기 경량성 폴리우레탄 인조피혁은 폴리올 100 중량부, 이소시아네이트 20 내지 40 중량부, 블로킹제 8 내지 12 중량부, 중공형 캡슐 1 내지 10 중량부 및 경화제 1 내지 10 중량부로 이루어지고,
상기 방오성 조성물은 물 100 중량부에 수성 폴리우레탄 20 내지 30 중량부, 팽창성 캡슐 25 내지 35 중량부, 이산화탄소가 함유된 비정질 침강형 합성실리카 3 내지 7 중량부 및 크림 0.5 내지 3 중량부를 혼합하여 이루어지는 것을 특징으로 하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법.
A stain-resistant composition coating step of coating a stain-resistant composition by impregnating lightweight polyurethane artificial leather with a stain-resistant composition containing water-based polyurethane and expandable capsules;
A coating layer uniformization step in which the lightweight polyurethane artificial leather coated with the antifouling composition through the above antifouling composition coating step is passed through a pressurized mangle roller exhibiting a pressure of 2.5 to 5.0 kg/cm 2 to uniformize the coating layer made of the antifouling composition;
A heating step of heating the lightweight polyurethane artificial leather having a uniform coating layer through the above-mentioned coating layer uniformization step at a temperature of 80 to 120°C for 10 to 20 minutes;
A cooling step for cooling the lightweight polyurethane artificial leather heated through the above heating step; and
It consists of a touch control step of adjusting the touch by passing the lightweight polyurethane artificial leather cooled through the above cooling step through a guide roller;
The above lightweight polyurethane artificial leather is composed of 100 parts by weight of polyol, 20 to 40 parts by weight of isocyanate, 8 to 12 parts by weight of blocking agent, 1 to 10 parts by weight of hollow capsule, and 1 to 10 parts by weight of curing agent.
A method for producing lightweight polyurethane artificial leather with improved water-repellent properties, characterized in that the water-repellent composition is prepared by mixing 20 to 30 parts by weight of water-based polyurethane, 25 to 35 parts by weight of expandable capsules, 3 to 7 parts by weight of amorphous precipitated synthetic silica containing carbon dioxide, and 0.5 to 3 parts by weight of cream with 100 parts by weight of water.
상기 폴리올은 폴리에테르 폴리올, 폴리에스테르 폴리올 및 글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지며,
상기 폴리에테르 폴리올은 폴리에틸렌글리콜, 폴리카보네이트디올, 폴리프로필렌글리콜 및 폴리테트라메틸렌에테르글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지고,
상기 폴리에스테르폴리올은 아디프산과 네오펜틸글리콜을 반응시켜 제조되며,
상기 글리콜은 1,6-헥산디올, 에틸렌글리콜 및 디에틸렌글리콜로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법.
In claim 1,
The above polyol is composed of at least one selected from the group consisting of polyether polyol, polyester polyol and glycol,
The above polyether polyol is composed of at least one selected from the group consisting of polyethylene glycol, polycarbonate diol, polypropylene glycol and polytetramethylene ether glycol,
The above polyester polyol is manufactured by reacting adipic acid and neopentyl glycol.
A method for producing lightweight polyurethane artificial leather with improved water-repellent properties, characterized in that the glycol comprises at least one selected from the group consisting of 1,6-hexanediol, ethylene glycol and diethylene glycol.
상기 중공형 캡슐은 직경이 10 내지 200 마이크로미터이며,
열가소성 수지로 이루어진 쉘(shell)의 내부에 액화 탄화수소가 충전되어 이루어지는 것을 특징으로 하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법.
In claim 1,
The above hollow capsule has a diameter of 10 to 200 micrometers,
A method for manufacturing lightweight polyurethane artificial leather with improved water-repellent properties, characterized in that the interior of a shell made of thermoplastic resin is filled with liquefied hydrocarbon.
상기 팽창성 캡슐은 직경이 10 내지 30 마이크로미터이며,
염화비닐리덴으로 이루어진 쉘(shell)의 내부에 이산화 이산화탄소가 충전되어 이루어지는 것을 특징으로 하는 방오성이 향상된 경량성 폴리우레탄 인조피혁의 제조방법.In claim 1,
The above inflatable capsule has a diameter of 10 to 30 micrometers,
A method for manufacturing lightweight polyurethane artificial leather with improved water-repellent properties, characterized in that the interior of a shell made of vinylidene chloride is filled with carbon dioxide.
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