Abstract:
PURPOSE: Provided are process for producing recycled resin composition with renewed physical property by adding various additives to GMT(glass mat thermoplastic) and compounding the obtained material into the recycled resin composition, and the produced composition. CONSTITUTION: The process comprises steps of washing used GMT with high pressure water under controlled temperature then drying the washed GMT for constant time period; breaking and grinding dried GMT; mixing the ground GMT base material with alternative GMT and compatible polymer; introducing the mixture into an extruder then melting and blending the mixture; and extruding the molten material then cutting the regenerated resin product into pellets. The polymer added to the GMT base material is any one of olefine resin or TPE.
Abstract:
Provided is a waste thermoplastic olefinic resin-containing composition, which has excellent dimensional stability and weather resistance, allows production of high-quality of molded articles, shows improved physical properties, and is applicable to car bumper covers. The waste thermoplastic olefinic resin-containing composition comprises: 25-45 wt% of a waste olefinic resin having a melt index of 10-20 g/10 min.; 24-45 wt% of a polypropylene resin having a melt index of 100-250 g/ 10 min.; 9-50 wt% of an inorganic filler; and 0.1-1 wt% of a weather resistance stabilizer. The inorganic filler includes wollastonite and talc in a weight ratio of 8:2-2:0.1. The weather resistance stabilizer includes a modified hindered phenol. The resin composition optionally further comprises a thermal stabilizer.
Abstract:
본 발명은 자동차의 충격 흡수재로 사용되는 백빔(Back beam) 소재인 GMT(Glass Mat Thermoplastics)를 재가공하고, 여기에 여러 가지 첨가제를 첨가한 후 컴파운딩시켜 새로운 물성의 재생수지를 제조하는 방법에 관한 것이다. 이를 위하여, 본 발명은 수거한 폐GMT를 온도조절이 가능한 고압수로 오염물을 세척한 후 건조기에서 일정시간 동안 건조하는 단계와, 상기 단계에서 건조시킨 GMT를 가공기에서 분쇄한 후 이렇게 분쇄한 GMT 베이스 원료에 GMT와 상용성이 있는 고분자를 첨가하여 믹서에서 혼합하는 단계와, 상기 단계에서 혼합한 수지를 압출기에 투입하여 용융 혼련시키고 압출 후 절단하여 펠릿화하는 단계를 포함하는 것을 특징으로 하는 폐GMT를 재활용하여 재생수지를 제조하는 방법을 제공한다.
Abstract:
PURPOSE: A method for recycling a bumper cover using blasting separation is provided to secure the mechanical properties of the bumper cover and the exterior qualities of the bumper cover similar to those of a new product, improve efficiencies for removing a painting and plating layer compared with an existing chemical separation or sand blasting, and secure a very advantageous economic efficiency by recycling a medium. CONSTITUTION: A method for recycling a bumper cover using blasting separation includes: a step of inserting a target which is the bumper cover having a painting or plating layer into a processing line; a step of determining conditions for a blasting chamber by scanning the information of the bumper cover; a step of inserting the bumper cover into the blasting chamber, implementing the blasting separation using a blasting medium, and then removing the painting or plating layer; a step of crushing and pulverizing the bumper cover from which the painting or plating layer is removed; and a step of inserting the crushed and pulverized bumper cover into a compounding process.
Abstract:
PURPOSE: Provided is process for producing recycled resin having renewed physical property using GMT (Glass Mat Thermoplastics) as raw material of back beam in cars for absorbing impact and comprising other additives for the renewed property by compounding technique. CONSTITUTION: The process comprises steps of washing out contaminant of used GMT with high-pressure water possible to control temperature then drying the washed material for constant time; breaking dried GMT by processing machine, adding polymer compatible with the GMT base raw material then mixing together in a mixer; introducing the mixed resin into an extruder and melting and admixing the resin in the extruder; and extruding the prepared material and cutting into pellets.
Abstract:
PURPOSE: A system for collecting substances from waste plastic compression blocks is provided to collect pellet type substances from which the moisture and gas are removed using a multi-stage extruder. CONSTITUTION: A method of collecting waste plastic and waste plastic compression blocks before being fuel comprises a first step(S100) to generate the compression block by compressing the industrial waste to a predetermined unit; a second step(S200) which dismantls the generated compression block; a third step(S300) which selects the waste vinyl included in the disassembled compression block according to the predetermined condition; a fourth step(S500) which dries by heating the selected waste vinyl; a fifth step(S600) which removes moisture and gas of the dried vinyl using the multi-stage extruder; and a sixth step(S700) which ejects the waste vinyl, from which the moisture and gas are removed, into a pellet state. The compression block of the first step is generated in one ton unit. [Reference numerals] (AA) Start; (BB) End; (S100) Step where a compression block is generated; (S200) Step where the compression block is dismantled; (S300) Step where the dismantled block is screened; (S400) Step where the screened waste vinyl parts of the block are crushed; (S500) Step where the waste vinyl is dried by heating it with hot air; (S600) Step where the moisture and gases of the waste vinyl are removed using a multi-stage extruder; (S700) Step where the waste vinyl is ejected in the form of pellets
Abstract:
A waste polypropylene resin composition is provided to improve impact resistance and flowability, to allow it to be formed even in case of a small thickness and to lower a manufacturing cost by recycling the wasted bumper of automobiles. A waste polypropylene resin composition comprises 30-40 wt% of a waste polypropylene resin containing 40-50 wt% of glass fiber; 20-40 wt% of a waste thermoplastic olefin-based resin; 10-30 wt% of a high crystalline polypropylene resin; 3-9 wt% of a plastomer; 5-10 wt% of a co-polypropylene resin; and 12-25 wt% of glass monofilament. Preferably the waste polypropylene resin has a flow index of 30-80 g/10 min; the waste thermoplastic olefin-based resin has an impact strength of 35-45 kg.cm/cm and a flow index of 10-20 g/10 min; and the high crystalline polypropylene resin has an impact strength of 5-10 kg.cm/cm and a flow index of 100-250 g/10 min.
Abstract:
본 발명은 자동차의 충격 흡수재로 사용되는 백빔(Back beam) 소재인 GMT(Glass Mat Thermoplastics)를 재가공하고, 여기에 여러 가지 첨가제를 첨가한 후 컴파운딩시켜 새로운 물성의 재생수지 조성물에 관한 것이다. 이를 위하여, 본 발명은 ①폐GMT 20∼80중량%, ②블럭코폴리프로필렌 10∼80중량%, ③에틸렌프로필렌러버 2∼20중량%, ④말레산무수물 커플링에이전트 1∼10중량%, ⑤단유리섬유 5∼10중량%, 상기 구성성분 ①+②+③+④+⑤ 100중량%에 대하여 실리카옥사이드계 무기충진물 2∼20중량%로 이루어진 재생수지 조성물을 제공한다.