KR900008705B1 - Method for the preparation of grain face artificial leather - Google Patents
Method for the preparation of grain face artificial leather Download PDFInfo
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- KR900008705B1 KR900008705B1 KR1019880017952A KR880017952A KR900008705B1 KR 900008705 B1 KR900008705 B1 KR 900008705B1 KR 1019880017952 A KR1019880017952 A KR 1019880017952A KR 880017952 A KR880017952 A KR 880017952A KR 900008705 B1 KR900008705 B1 KR 900008705B1
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- 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
- D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—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 by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
- D06N3/08—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 by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products with a finishing layer consisting of polyacrylates, polyamides or polyurethanes or polyester
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Abstract
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Description
본 발명은 의류용으로 유용한 은면형 인공피혁의 제조방법에 관한 것으로써 더욱 상세하게는 유연한 피혁상 시이트에 가소화된 고분자 탄성체를 코팅하여 표면 피막층을 형성시킴으로 해서 우수한 촉감과 투습성 및 표면무늬의 첨예성을 갖는 특히, 의류용으로 적합한 인공피혁을 제조하는 방법에 관한 것이다.The present invention relates to a method of manufacturing a silver artificial leather useful for clothing, and more particularly, by coating a plasticized polymer elastomer on a flexible leather sheet to form a surface coating layer, thereby providing excellent touch, moisture permeability and surface pattern. In particular, the present invention relates to a method of manufacturing artificial leather suitable for clothing.
일반적으로 인공피혁에 사용되고 있는 고분자 탄성체인 폴리우레탄 탄성체는 탄성성분으로 작용하는 소프트세그멘트와 비탄성성분으로 작용하는 하드세그멘트로 구성되어 있는 바, 이러한 탄성성분인 소프트세그멘트의 작용과 분자쇄간의 강한 수소결합으로 인해 폴리우레탄 탄성체의 신도 및 탄성회복률은 매우 높다.In general, polyurethane elastomer, a polymer elastomer used in artificial leather, is composed of a soft segment acting as an elastic component and a hard segment acting as an inelastic component, and a strong hydrogen bond between the action of the elastic component and the molecular chain. Due to this, the elongation and elastic recovery rate of the polyurethane elastomer are very high.
이와 같은 높은 탄성회복률은 폴리우레탄 탄성체를 은면형 인공피혁에 적용했을때 오히려 높은 반발탄성으로 인해서 고무와 같은 둔한 축감이 들도록 하므로서 물성을 저하시키고 있다.Such a high elastic recovery rate is deteriorated in physical properties by applying a polyurethane elastic body to a silver artificial artificial leather, due to the high rebound elasticity, such as dull shrinkage due to rubber.
또한 폴리우레탄 탄성체를 습식성형시키고자 할때는 건조공정에서 20%이상의 면적이 수축으로 인하여 꼬임이 발생하기 때문에 종래의 은면형 인공피혁의 제조에 있어서, 최대의 결점이 되어 왔다.In addition, when wet molding a polyurethane elastic body, in the drying process, since 20% or more of the area is twisted due to shrinkage, it has been the biggest drawback in the manufacturing of conventional silver artificial leather.
또한, 일본 특공소 58-42305호에서는 피혁상 시이트에 미세다공질 피막인 고분자 탄성체를 단독으로 도포 적층시키는 방법이 제시되어 있으나, 이 경우에는 극세화된 피혁상 시이트의 유연성과 표면 피막층이 고분자 탄성체의 고무반발탄성과의 균형을 이루지 못함으로 말미암아 촉감이 우수하지 못한 문제점이 있고, 또 일본 특공소 47-48505호, 48-30361호, 58-42305 및 60-28304호에서는 습식가공법으로 미세다공질막을 이형지 또는 폴리에틸렌 필름상에 도포시키고, 건조시 수축되는 것을 축 방향으로 10%가량 신장시켜 피혁상 시이트에 라미네이팅 시키는 방법과 저분자량의 폴리우레탄 용액을 혼합해서 습식필름을 제조하여 피혁상 시이트에 라미네이팅시키는 방법이 제시되어 있는데, 이러한 방법들은 피혁상 시이트와 표면 피막 고분자 탄성체간에는 어느정도 균형을 이루고 있으나 표면 피막층의 고무반발탄성이 여전히 남아 있으며, 접착제 사용등으로 투습도가 낮고 촉감이 다소 경직된 느낌을 주는 결점이 있다. 그 외에도, 일본 특공소 60-17892호, 60-34676호등에서는 건식방법으로 피혁상 시이트에 고분자 탄성체를 비다공질박막으로 성형시킨 후에 접착시키는 은면형 인공피혁 제조방법을 기술하고 있으나, 이 방법 또한 건식무공층에 의한 투습도 저하와 표면 내마모성이 부족한 결점이 있는 것으로 지적되었다.In addition, Japanese Laid-Open Patent Publication No. 58-42305 discloses a method of coating and laminating a polymer elastic body that is a microporous coating alone on a leather sheet, but in this case, the flexibility and surface coating layer of the ultra-fine leather sheet are obtained. Due to the lack of balance with rubber resilience, there is a problem in that the touch is not excellent.In addition, the Japanese special offices 47-48505, 48-30361, 58-42305, and 60-28304 release the microporous membrane by the wet processing method. Alternatively, a method of coating on a polyethylene film, stretching the shrinkage upon drying by about 10% in the axial direction, laminating the leather sheet, and mixing a low molecular weight polyurethane solution to produce a wet film to laminate the leather sheet. These methods suggest that certain methods can be established between the leather sheet and the surface coating polymer elastomer. Although it is balanced, the rubber resilience of the surface coating layer still remains, and the use of adhesives, such as the low moisture permeability and the touch gives a feeling of a slight stiffness. In addition, Japanese Patent Office 60-17892, 60-34676, etc., describes a method of manufacturing a silver artificial leather, in which a polymer elastic body is formed into a nonporous thin film and then bonded to the leather-like sheet by a dry method. It has been pointed out that there are drawbacks of reduced moisture permeability and lack of surface abrasion resistance by the dry air layer.
이러한 문제점들을 해결하기위하여, 본 발명에서는 표면 피막층으로 사용되는 폴리우레탄 탄성체에 디옥틸프탈레이트 등의 가소제도 가소화시킨 폴리염화비닐 공중합체 또는 폴리초산 비닐 중합체를 혼합하고, 습식 코팅하여 성형시키게 되면 표면 피막층의 반발탄성으로 인한 고무특성을 완화시키고 극세섬유와 폴리우렌탄 탄성체로 구성된 피혁상 시이트와의 모듈러군형이 유지되어 꼬임현상 및 성형시의 수축현상도 현저히 감소됨을 알게 되었다.In order to solve these problems, in the present invention, a polyvinyl chloride copolymer or a polyvinyl acetate polymer plasticized with a plasticizer such as dioctylphthalate is mixed with a polyurethane elastomer used as a surface coating layer, and the surface is formed by wet coating. It was found that the elastic properties of the coating layer were alleviated and the modular group of the leather-like sheet composed of the ultrafine fibers and the polyurethane elastic body was maintained to significantly reduce the kink and shrinkage during molding.
따라서, 본 발명의 목적은 피혁상 시이트위에 폴리우레탄 탄성체를 코팅하여 은면형 인공피혁을 제조할 때 폴리우레탄 탄성체를 폴리비닐 클로라이드등으로 가소화시킴으로써, 반발탄성이 높은 폴리우레탄의 고무특성을 줄이고, 또 건조시 수축률을 적게해 주어서 고무감이 없이 촉감이 유연하고 꼬임현상이 없으며 투습도와 표면무늬 첨예성이 우수한 의류용 은면형 인공피혁의 제조방법을 제공하는데 있다.Therefore, an object of the present invention is to reduce the rubber properties of the high rebound elastic polyurethane by plasticizing the polyurethane elastic body with polyvinyl chloride or the like when the polyurethane elastic body is coated on the leather-like sheet to produce a silver-faced artificial leather, In addition, it provides a manufacturing method of silver-type artificial leather for clothing, which has a soft feeling, no tangling phenomenon, and excellent moisture permeability and surface pattern sharpness without reducing rubber shrinkage during drying.
이하 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명은 부직포와 폴리우레탄 탄성체로 구성된 피혁상 시이트의 일면에 폴리우레탄 탄성체 용액을 코팅하여 표면 피막층을 형성시키고 응고, 수세, 건조시킨 후 엠보싱하여 은면형 인공피혁을 제조하는데 있어서, 부직포는 해도형 복합섬유로서 0.5∼0.001데니어로 극세화 가능한 것으로 구성하고, 표면 피막층 폴리우레탄 탄성체는 고형분 30%의 폴리우레탄 용액 100부에 폴리비닐 클로라이드를 디옥틸프탈레이트 또는 디옥아디페이트계 가소제에 용해시킨 용액 2 내지 20부를 혼합시켜서 되어진 가소화된 표면 피막층 폴리우레탄 탄성체로 구성한 것을 이용하여서 은면형 인공피혁을 제조하는데 그 특징이 있다.The present invention is to form a surface coating layer by coating a polyurethane elastomer solution on one surface of a leather-like sheet consisting of a nonwoven fabric and a polyurethane elastic body, and to form a silver artificial artificial leather by embossing after coagulation, washing and drying. The composite fiber is composed of 0.5 to 0.001 denier, and the surface coating layer polyurethane elastomer is composed of a solution of polyvinyl chloride dissolved in dioctylphthalate or dioxadiate-based plasticizer in 100 parts of a polyurethane solution having a solid content of 30%. It is characterized by the production of silver-faced artificial leather by using 20 parts made of a plasticized surface coating layer made of polyurethane elastomer.
이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.
본 발명은 크게 부직포와 폴리우레탄 탄성체로 구성된 적층 시이트로서 부기포로서는 해도형 복합섬유로서 0.5∼0.001데니어로 극세화가능한 것을 사용하고, 표면 피막층을 이루는 폴리우레탄 탄성체 용액으로는 고형분 30%의 일액형선상 폴리우레탄 탄성체의 디메틸포름아미드용액 100부에 가소화된 폴리염화비닐 중합체 2∼20부를 혼합시킨 것을 사용하는데, 이때 가소화된 폴리염화비닐 중합체는 폴리염화비닐 중합체 100부에 가소제 30부 내지 50부, 안정제 0.5 내지 2부를 혼합시킨 페이스트레진으로 사용하는 것이 좋다.The present invention is a laminated sheet composed largely of a nonwoven fabric and a polyurethane elastic body, and the sub-foam is a sea island-type composite fiber that can be micronized to 0.5 to 0.001 denier, and the polyurethane elastomer solution forming the surface coating layer is a one-component type having a solid content of 30%. A mixture of 2 to 20 parts of plasticized polyvinyl chloride polymer in 100 parts of dimethylformamide solution of linear polyurethane elastomer is used, wherein the plasticized polyvinyl chloride polymer is used in 30 parts to 50 parts of plasticizer of polyvinyl chloride polymer. In addition, it is good to use it as the paste resin which mixed 0.5-2 parts of stabilizers.
한편, 본 발명에 사용한 폴리우레탄은 분자량 1300∼2000의 에스테르 혹은 에테르타입 글리콜, 4, 4'-디페닐 메탄디이소시아네이트 및 디올 혹은 디아민쇄 신장제를 반응시켜 얻어진 디메틸 포름아미드 가용성의 고분자 탄성체이고, 이 탄성체와 특성은 100%모듈러스가 30∼50㎏/㎠이고, 연화점이 50∼180℃이며, 폴리우레탄 탄성체의 혼용된 폴리비닐 중합체는 가소제에 가용인 폴리비닐 크로라이드로서 주합도가 700∼1700이며, 가소제의 종류에 따라 점도의 경시 변화가 적으며 내열성이 높고 현탁 중합된 것으로 디메틸포름아미드 용액과 상용성이 우수하다.On the other hand, the polyurethane used in the present invention is a dimethyl formamide soluble polymer elastomer obtained by reacting an ester or ether type glycol having a molecular weight of 1300 to 2000, 4, 4'-diphenyl methane diisocyanate and a diol or diamine chain extender, This elastomer and its properties are 30-50 kg / cm 2 of 100% modulus, 50-180 ° C. of softening point, and the mixed polyvinyl polymer of the polyurethane elastomer is a polyvinyl fluoride soluble in a plasticizer and has a main composition of 700-1700. According to the kind of plasticizer, there is little change of viscosity with time, high heat resistance and suspension polymerization, and excellent compatibility with dimethylformamide solution.
다음의 표 1은 폴리우레탄 탄성체용액 단독 필름의 물성과 폴리우레탄 탄성체용액 100부에 가소화된 폴리염화비닐 중합체수지 10부를 블랜딩했을 때의 물성을 비교한 것이다. 표 1에서 보면 블랜딩한 경우(A필름)의 탄성회복률이 70∼80%로서 폴리우레탄 단독의 경우보다 상당히 완화되었음을 알 수 있고, 이것은 제품의 고무감을 줄이고 촉감을 부드럽게 하는 결정적인 요소로 작용하게 된다. 또한, 필름 성형시의 수축률도 상당히 감소되어 있음을 보여 준다.Table 1 below compares the physical properties of the polyurethane elastomer solution alone film with the physical properties of 10 parts of a plasticized polyvinyl chloride polymer resin plasticized to 100 parts of the polyurethane elastomer solution. In Table 1, it can be seen that the elastic recovery rate of the blended (A film) was 70 to 80%, which was considerably alleviated than that of polyurethane alone. It also shows that the shrinkage in film forming is also significantly reduced.
[표 1]TABLE 1
습식필름의 두께…200μThe thickness of the wet film. 200μ
A…폴리비닐 중합체+폴리우레탄 중합체의 습식필름A… Wet film of polyvinyl polymer + polyurethane polymer
B…폴리우레탄 단독습식필름B… Polyurethane Single Wet Film
한편, 본 발명의 유연한 피혁상 시이트를 제조하기 위해서는 부직포로서 특수 해도형 복합섬유를 사용하는데, 치밀하게 3차원적으로 교락된 부직포에 폴리우레탄 탄성체가 습식가공법으로 충진되고 섬유와 충진폴리우레탄 탄성체사이는 직접 접착하지 않고 일정공극을 형성하고 있으며 또한 폴리우레탄 탄성체가 습식가공에 의한 영향으로 미세가공으로 되어 있다. 여기서 해도형 복합섬유는 화학적인 처리에 의해 극세섬유로 변성되어 변성후의 평균섬도가 0.5∼0.001데니어가 된다. 피혁상 시이트에 있어서 섬유와 폴리우레탄 탄성체의 비는 70/30∼40/60이며, 본 발명의 피혁상 시이트는 섬유의 극세화, 섬유와 폴리우레탄 탄성체간의 공극 및 폴리우레탄 탄성체가 갖는 미세기공등으로 인해 촉감이 부드럽고 물성이 우수한 천연피혁의 외관과 기능을 나타내게 된다.Meanwhile, in order to manufacture the flexible leather-like sheet of the present invention, a special island-in-the-sea composite fiber is used as a nonwoven fabric, and a polyurethane elastic body is filled by a wet processing method in a three-dimensionally interwoven nonwoven fabric, and the fiber and the filled polyurethane elastic body are filled. Does not directly adhere to form voids, and the polyurethane elastomer is microfabricated by the wet process. In this case, the island-in-the-sea composite fiber is denatured into an ultrafine fiber by chemical treatment to have an average fineness of 0.5 to 0.001 denier after modification. The ratio of fiber to polyurethane elastic body in the leather sheet is 70/30 to 40/60, and the leather sheet of the present invention is characterized in that the microfiber of the fiber, the pores between the fiber and the polyurethane elastic body, the micropores of the polyurethane elastic body, etc. Due to this, the touch is soft and exhibits the appearance and function of natural leather with excellent physical properties.
이와 같은 피혁상 시이트를 의류용에 적합하게 두께 0.6∼1㎜로 조절한 다음 한쪽면에 본 발명에서 언급한 가소화된 중합체 용액을 코팅시키고 응고, 수세하여 두께 10∼50㎛의 피막층을 형성시킨다. 다음에 건조후 코팅면을 엠보싱롤을 이용하여 열과 압력으로 고정시키면 코팅면에 원하는 표면무늬가 발현되면서 코팅피막의 내구성이 증진되게 된다.The leather sheet is adjusted to a thickness of 0.6 to 1 mm, suitable for clothing, and then coated on one side with the plasticized polymer solution mentioned in the present invention, solidified and washed to form a film layer having a thickness of 10 to 50 µm. . Next, after fixing the coated surface with heat and pressure using an embossing roll, the desired surface pattern is expressed on the coated surface, thereby increasing durability of the coated film.
그리고, 이와 같은 인조피혁의 제조에 있어 표면 피막층인 고분자 탄성체 즉, 폴리우레탄 탄성체는 두께가 10∼50㎛가 되도록 하고 피막층 단독의 반구상가소성이 80%이상이고, 3분간 100%신장시켰다가 외력을 제거했을 때의 탄성회복율이 65∼85%이며, 습식성형기 면적수축율이 10%이내인 것을 사용하는 것이 바람직하다.In the manufacture of such artificial leather, the polymer elastic body, that is, the polyurethane elastic body, which is the surface coating layer, has a thickness of 10 to 50 μm, the hemispherical plasticity of the coating layer alone is 80% or more, and 100% extension for 3 minutes It is preferable to use an elastic recovery rate of 65 to 85% at the time of removal, and a wet shrinker area shrinkage of 10% or less.
또한 피혁상시트에서 부직포로서 사용되는 해도형 복합섬유는 도성분으로서 폴리에틸렌테레프레탈레이트 또는 나일론 6, 해성분으로는 폴리에스테르, 폴리스틸렌, 폴리에틸렌, 또는 폴리아미드인 것이 바람직하다. 이와 같이 하여 제조된 은면형 인공피혁은 습식가공으로 인한 부드러운 촉감과 태가 발현되며, 가소화된 피막층을 사용하여 반발탄성이 완화되었으므로 고무감이 없고 표면무늬가 선명하면서 내구성이 우수하며, 투습성이 우수하여 의류용 인공피혁으로서 적합한 제반특성을 나타내었다.In addition, the island-in-the-sea composite fiber used as a nonwoven fabric in the leather sheet is preferably polyethylene terephthalate or nylon 6 as the island component, and polyester, polystyrene, polyethylene, or polyamide as the sea component. The silver-type artificial leather manufactured in this way exhibits a soft touch and appearance due to wet processing, and the rebound elasticity is alleviated by using a plasticized coating layer, so there is no rubber feeling, the surface pattern is clear, durability is excellent, and moisture permeability is excellent. It showed various characteristics suitable as artificial leather for clothing.
이하 본 발명은 실시예에 의거 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to Examples.
[실시예 1]Example 1
나이론-6 60부를 도성분으로 하고 폴리에틸렌 40부를 해성분으로 하여 섬도 3데니어, 51㎜∼70㎜의 길이를 갖는 해도형 극세섬유 스테이플 파이버(Staple Fiber)를 제조하였다. 이 섬유로 웨브(web)를 형성하고 니이들 펀칭(Needle punching)하여 3차원으로 치밀하게 교착된 부직포를 중량 150g/㎡, 두께 2.2㎜ 겉보기 밀도 2.34g/㎤되게 만들었다. 열수축, 힛 프레스(Heat-press)하고 건조하여 100%모듈러스가 40㎏/㎠인 에테르계 폴리우레탄을 충진시키고 톨루엔을 이용하여 해성분인 폴리에틸렌을 추출제거 하였다. 이때 극세섬유/ 탄성체가 65/35의 비율이며 섬유와 충진 탄성체가 직접 접착하지 않고 일정공극을 유지시키고 충진 탄성체도 습식가공으로 미세가공을 형성하고 있어 유연성 및 촉감이 우수하다. 다음으로 스라이싱기로 표리부위를 제거하고 0.6㎜로 이등분하여 피혁상 시이트를 제조하고, 카렌다롤로 평활성을 부여함과 동시에 스라이싱된 면에 100%모듈러스가 30㎏/㎠, 연화점 150℃인 에스테르에테르 공중합 폴리우레탄 탄성체 22.12부, 중합도 1300의 폴리비닐클로라이드 61.8부를 가소제인 디옥틸프탈레이트 37.2부와 안정제 1부에 용해한 용액 4.47부, 친수성 계면활성제 0.27부 소수계면활성제 0.37부, 실리카겔 3.67부, 디메틸포름아미드 69.1부로 구성된 피막층용 용액을 나이프 오버를 코팅기로 도포하고, 30℃∼40℃ 물에서 응고하고 50℃∼60℃의 물에서 충분히 수세한후 100℃ 에서 건조하였다.A sea island type ultrafine fiber staple fiber having a fineness of 3 denier and a length of 51 mm to 70 mm was prepared using 60 parts of nylon-6 as a island component and 40 parts of polyethylene as a sea component. A web was formed from this fiber and needle punched to produce a three-dimensionally tightly interwoven nonwoven fabric with a weight of 150 g / m 2 and a thickness of 2.2 mm apparent density of 2.34 g / cm 3. Heat shrinkage, heat-press (Heat-press) and dried to fill the ether-based polyurethane with 100kg modulus of 40kg / ㎠ and to remove the marine polyethylene by toluene. At this time, the ratio of microfibers / elastics is 65/35, and the fibers and the filling elastics do not directly adhere to each other to maintain a constant void, and the filling elastics also form fine processing by wet processing, which is excellent in flexibility and touch. Next, the front and back areas were removed with a slicing machine, and then bisected into 0.6 mm to produce a leather-like sheet. The calender roll gave smoothness, and at the same time, 100% modulus of the sliced surface was 30 kg / ㎠ and a softening point of 150 ° C. 22.12 parts of ester ether copolymer polyurethane elastomer, 61.8 parts of polyvinyl chloride having a degree of polymerization of 1300, 37.2 parts of dioctylphthalate as a plasticizer and 4 parts of stabilizer, 4.47 parts of a solution, 0.27 parts of hydrophilic surfactant, 0.37 parts of hydrophobic surfactant, 3.67 parts of silica gel, dimethyl The solution for the coating layer consisting of 69.1 parts of formamide was apply | coated with a coater, it solidified in 30 degreeC-40 degreeC water, wash | cleaned sufficiently in water of 50 degreeC-60 degreeC, and dried at 100 degreeC.
다음 엠보싱롤을 이용하여 온도 130'∼140℃, 압력 3.5㎏/㎠의 키드(kid)무늬로 표면을 열고정시켰다. 이렇게 하여 얻어진 은면형 의류용도의 인공피혁은 중량이 297g/㎠ 두께가 0.63㎜이며, 반발탄성회복성은 우혁(calf)과 유사하며 3분후의 회복각도가 55∼80°이고, 촉감, 외관이 우수하였다.Next, the surface was heat-set with a kid pattern having a temperature of 130 'to 140 ° C and a pressure of 3.5 kg / cm 2 using an embossing roll. The artificial leather for the silver-type garment thus obtained has a weight of 297g / cm 2 and thickness of 0.63mm, and the resilient elastic recovery is similar to calf, and the recovery angle after 55 minutes is 55 ~ 80 °, and the touch and appearance are excellent. It was.
[비교예 1]Comparative Example 1
피혁상 시이트에 도포적층되는 피막 탄성체가 가소화 되지 않고, 실시예 1과 동일 특성을 갖는 폴리우레탄 용액 단독을 도포한 것 외에는 실시예 1과 동일하다.It is the same as that of Example 1 except the coating elastic body apply | coated and laminated | stacked on the leather sheet was apply | coated and the polyurethane solution which has the same characteristic as Example 1 was apply | coated.
[비교예 2]Comparative Example 2
피혁상 시이트에 적층되는 탄성체가 비교예 1에서 사용한 폴리우레탄 용액 단독으로 폴리에틸렌 필름상에 도포하여 얻어진 두께 40μ의 습식필름이며 이것을 피혁상 시이트에 일액형 폴리우레탄계 접착제를 사용하여 라미네이팅 한것 이외에는 실시예 1과 동일하다.An elastic body laminated on the leather sheet is a wet film having a thickness of 40 µ obtained by applying a polyurethane solution used in Comparative Example 1 alone on a polyethylene film, except that it was laminated using a one-component polyurethane adhesive on the leather sheet. Same as 1
실시예 1, 비교예 1, 2에서의 엠보싱 조건은 동일하며 제조된 인공피혁의 특성을 비교하여 표 2에서 나타내었다.The embossing conditions in Example 1 and Comparative Examples 1 and 2 are the same and are shown in Table 2 by comparing the characteristics of the manufactured artificial leather.
[표 2]TABLE 2
(주) * 켄더레버법에 의한 수치로 작을수록 유연하다.(Note) * The numerical value by kender lever method is small, so it is flexible.
** 인공피혁 기술자 5인의 관능시험결과** Sensory test results of 5 artificial leather technicians
*** 제조후 실온에서 10일경과 후 조사*** Irradiation after 10 days at room temperature after manufacture
상기 표에서 알 수 있는 바와 같이 실시예 1의 기술이 비교예 1,2에 비해 투습도, 촉감, 표면무늬 첨예성이 우수함을 알 수 있다.As can be seen from the above table, it can be seen that the technique of Example 1 is superior in moisture permeability, touch, and surface pattern sharpness as compared to Comparative Examples 1 and 2.
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