Abstract:
본 발명은 생분해성 수지인 폴리락틱엑시드 및 공중합체 혼합물로 이루어진 혼합 기재에 다량의 폴리락틱엑시드를 혼합한 것을 특징으로 하는 폴리락틱엑시드를 이용한 신발 중창용 생분해성 발포체 조성물 및 이의 제조방법에 관한 것으로, 상기 혼합기재 내에 다량의 생분해성 수지인 폴리락틱엑시드를 혼합함으로써, 생분해도가 높고, 또한 에틸렌비닐아세테이트 공중합체, 스타이렌이소프렌스타이렌 공중합체 및 에틸렌메틸아크릴엑시드 공중합체의 혼합물을 사용함으로써, 내구성과 경도가 우수하여 신발 중창용 소재에 적합한 것이 장점이다.
Abstract:
PURPOSE: A polypropylene composite composition is provided to have excellent mechanical properties such as impact resistance, bending strength, and excellent physical properties such as thermal resistance, electric properties, etc. CONSTITUTION: A polypropylene composite composition comprises 80-90 parts by weight of polypropylene substrate, 5-20 parts by weight of alpha-olefin copolymer, 1-2.5 parts by weight of a polar group-containing modified resin, 0.5-3.0 parts by weight of a nano inorganic additive, and 0.05-0.5 parts by weight of an inorganic modifier. The nano inorganic additive uses silica as dry silica, wherein the dry silica comprises an inorganic modifier dipped inside. The inorganic modifier is selected from ampholyte, polyhydric alcohols, organic silanes, or a mixture thereof. [Reference numerals] (P1) Step of manufacturing modified master batch by mixing 25-50 parts by weight of acrylate-based copolymer and 5-20 parts by weight of surface-treated nano inorganic based additives with respect to 100 parts by weight of alpha-olefin copolymer; (P2) Step of manufacturing a pellet shape by melting 1-2.5 parts by weight of polar group-containing modified resin and 5-10 parts by weight of modified master batch with respect to 80-90 parts by weight of polypropylene base by using extruder under die temperature of 170-190 °C and screw rate of 45-60 rpm
Abstract:
본 발명은 에틸렌비닐아세테이트 공중합체(EVA)와 에틸렌아크릴계 고무의 블렌드물을 혼합기재로 하고, 여기에 발포제, 가교제 및 각종 첨가제 등으로 이루어지는 버핑 및 자외선처리 공정없이 접착 가능한 구두창용 발포체 컴파운드 조성물 및 이를 이용한 구두창용 발포체의 제조방법에 관한 것으로, 제조한 구두창용 발포체를 갑피와의 접착시 버핑 및 자외선조사 공정을 거치지 않고 프라이머 처리만으로도 종래의 버핑-세척-건조-전처리제(프라이머) 도포-건조-자외선처리-접착제 도포 과정을 거치는 복잡한 공정에 의해 제조된 구두창용 발포체와 동등 이상의 매우 우수한 접착강도를 가지는 발포체 조성물을 제조할 수 있어 작업 공정이 단축되고, 생산성을 향상시킬 수 있는 효과가 있다. 그리고 본 발명은 구두창용 발포체 컴파운드 조성물을 이용한 구두창용 발포체의 접착 시 버핑(buffing) 및 자외선조사 공정을 실시하지 않으므로써, 버핑 시 발생되는 분진과, 이러한 분진의 폐기물 처리 및 버핑 공정에 따른 불량률을 대폭 감소시켜 생산비 절감 뿐 만 아니라, 인체에 유해한 자외선 방사 물질에 의한 피해가 없으므로 작업환경이 쾌적하고, 친환경적인 것이 장점이다. 또한, 본 발명은 기존의 구두창용 발포체 컴파운드 조성물을 제조하는 설비의 적용이 가능하므로 기존 컴파운드 제조업체뿐만 아니라 구두창을 성형하는 업체 에서도 간단한 설비 추가만으로도 컴파운드의 제조가 가능하기 때문에 물류비가 절감되고, 간단한 생산라인으로도 컴파운드 조성물 및 구두창용 발포체의 제조기술을 확보할 수 있는 것이 장점이다. 비자외선 접착공정(Non-UV), 구두창용, 발포체, 컴파운드, 에틸렌비닐아세테이트 공중합체, 에틸렌아크릴계 고무, 저밀도 폴리에틸렌, 버핑공정
Abstract:
PURPOSE: A butyl rubber composition with excellent processability and moldability is provided to ensure excellent dispersibility according to use of a white carbon/softner composite, and to improve fluidity of the butyl rubber composition while reinforcing the strength of the butyl rubber. CONSTITUTION: A butyl rubber composition with excellent processability and moldability includes a butyl rubber base material, additives for rubber, sulfur and vulcanization accelerators. The butyl rubber composition includes, based on 100.0 parts by weight of a butyl rubber base material, 50~80 parts by weight of white carbon and softener composite composition. Butyl rubber(IIR), bromobutyl rubber(BIIR) or chlorinated butyl rubber(CIIR) as the butyl rubber base material are used in a single or a mixed form.
Abstract:
PURPOSE: A foam compound of foam midsole is provided to ensure the same adhesive strength as foam for midsole manufactured by a conventional method while shortening a conventional processing step. CONSTITUTION: A foam compound of foam midsole capable of non-UV adhesion comprises 100.0 parts by weight of a mixed material blend material consisting of an ethylene vinyl acetate copolymer, an ethylene acrylic copolymer, an α-olefin-based copolymer, and an ethylene acryl-based rubber, 2.5~7.0 parts by weight of foaming agent, 0.5~0.8 parts by weight of cross-linking agent, 0.5~1.0 parts by weight of crosslinking aid, 1~5 parts by weight of metal oxide, 1~2 parts by weight of stearic acid, 0.1~1.0 parts by weight of pigment, 1~5 parts by weight of titanium oxide and 5~10 parts by weight of adhesion improving agent.
Abstract:
PURPOSE: A thermoplastic polyurethane film composition is provided to prevent pin-hole phenomenon generated in the manufacture of the polyurethane film and to improve adhesive force and workplace as a volatile organic solvent is not used at all. CONSTITUTION: A thermoplastic polyurethane film composition comprises a thermoplastic base material 90 parts by weight and a modified master batch 10~20 parts by weight. The modified master batch includes a thermoplastic polyurethane substrate 100 parts by weight, silica 1~3 parts by weight, and polar polymer 10~30 parts by weight. A method for preparing the thermoplastic polyurethane film composition comprises the steps of: mixing a thermoplastic base material 90 parts by weight and a modified master batch 10~20 parts by weight; and preparing pellets by melting the mixture in a biaxial extruder with 130~180 °C of a die temperature and 45~60 rpm of a screw speed.
Abstract:
A composition for a thermoplastic polyurethane film, and its preparation method are provided to improve adhesive force remarkably without the deterioration of the elasticity of polyurethane and to prevent the generation of pin holes in case of making a thin thermoplastic polyurethane film. A method for preparing a composition for a thermoplastic polyurethane film comprises the steps of mixing 1~3 parts by weight of silica and 10~30 parts by weight of a polar polymer to 100 parts by weight of a thermoplastic polyurethane, melting the mixture in a twin screw extruder, and making the molten one into a pellet; and mixing 90 parts by weight of a thermoplastic polyurethane base and the prepared modified master batch, melting the mixture in a twin screw extruder, and making the molten one into a pellet.