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    • 12. 发明公开
    • 자동차 인스트루먼트 표피재용 파우더 슬러쉬 성형을 위한미세 구형 파우더 제조 장치 및 방법
    • 圆形微粉的方法和装置用于粉末SLUSH模制
    • KR1020080114126A
    • 2008-12-31
    • KR1020070063389
    • 2007-06-27
    • 현대자동차주식회사롯데케미칼 주식회사
    • 한인수정기연조성민조연환
    • B29B9/06B29C47/02
    • B29B9/06B29B9/12B29B11/10
    • An apparatus and a method of preparing a spherical fine powder for powder slush molding for automobile instrument surface materials are provided to reduce high process costs during freeze pulverization and to solve problems such as poor melting on the back side of a molded article and formation of pin holes in the molded article by preparing spherical fine powder with an uniform particle size. An apparatus of preparing a spherical fine powder for powder slush molding for automobile instrument surface materials comprises: an extruder(10) melting and kneading olefin- and urethane-based thermoplastic resins at high temperatures; a gear pump(12) transferring the thermoplastic resins that have been melted and kneaded at high temperatures to the fine extrusion die as much as a fixed quantity at a time; a fine extrusion die(14) including an underwater type cutting unit(20) cutting the extruded thermoplastic resins to spherical fine powder; a cooling water tank(16); a heat exchanger(18); a transfer line(24); a centrifuge(22); a cooling water return line; and a spherical fine powder discharge line(28).
    • 提供一种制备用于汽车仪器表面材料的用于粉末搪塑的球形细粉末的设备和方法,以降低冷冻粉碎过程中的高工艺成本,并解决成型品背面的熔融不良等问题,并形成销 通过制备具有均匀粒径的球形细粉末,成型制品中的孔。 一种制备用于汽车仪器表面材料的粉末搪塑的球形细粉的设备包括:挤压机(10)在高温下熔融和捏合烯烃和氨基甲酸酯类热塑性树脂; 将已经在高温下熔融混炼的热塑性树脂一次多次固定到精细挤出模上的齿轮泵(12) 包括将挤出的热塑性树脂切割成球形细粉末的水下型切割单元(20)的精细挤出模具(14) 冷却水箱(16); 热交换器(18); 传输线(24); 离心机(22); 冷却水回水管线; 和球状细粉末排出管线(28)。
    • 15. 发明公开
    • 내충격성보강용무정형폴리프로필렌계수지조성물
    • 用于抗冲击强化的非晶聚丙烯树脂组合物
    • KR1020000025221A
    • 2000-05-06
    • KR1019980042211
    • 1998-10-09
    • 롯데케미칼 주식회사
    • 조성민이승욱황진구김정수
    • C08L23/10C08K3/00
    • C08L23/10C08K3/013C08L2205/025
    • PURPOSE: An amorphous polypropylene resin composition for impact resistance reinforcement mixed with crystalline polypropylene and inorganic fillers is provided which improves formability and productivity. CONSTITUTION: A specified amount of crystalline polypropylene and inorganic fillers is mixed with amorphous polypropylene which is added as a modifier for reinforcing the flexibility and impact resistance of a polypropylene resin composition such that the composition has not only flexibility at ordinary temperatures and high impact resistance at ordinary and low temperatures, but also excellent formability and productivity in the case of incorporating in a molding composition. The composition can be used for a base material of injection moldings such as wrapping films, sheets, automobile parts, electric product parts, electronic product parts, and toys or blending with a resin composition comprising a material of the injection moldings and a substitute for polyvinylchloride and low density polyethylene of a jacket for communication cables, a fiber and a tape.
    • 目的:提供与结晶聚丙烯和无机填料混合的抗冲击强化的无定形聚丙烯树脂组合物,其提高成形性和生产率。 构成:将特定量的结晶聚丙烯和无机填料与无定形聚丙烯混合,其被加入作为改性剂以增强聚丙烯树脂组合物的柔韧性和耐冲击性,使得该组合物不仅具有常温下的柔性和高抗冲击性 普通和低温,而且在结合成型组合物的情况下也具有优异的成形性和生产率。 该组合物可用于诸如包装膜,片材,汽车部件,电子产品部件,电子产品部件和玩具等注射成型品的基材,或者与包含注射成型品的材料和聚氯乙烯替代物的树脂组合物混合 和用于通信电缆的护套的低密度聚乙烯,纤维和带。