Shanghai Daoqin Plastics Co., Ltd.

         plastics processing also plastics molding processing, is will combined formed resin or plastics is plastics products various process 总称, is plastics industrial in relatively large production 部门. ethylene is main/primary raw materials, propylene, 1-丁烯, is copolymer 体, in catalytic agent function lower, using/adopting polymerization or gas versus polymerization process, to polymer 经闪蒸, separation 离, drying, pelletizing and other 工序, obtain pellets uniform formed product. 包括诸如 sheet/slice 材挤塑, film extrusion, pipe/tube or type 材挤塑, blow molding, injection molding and rotational molding.

         plastics products processing methods:

        挤塑:

         used for production product grade generally tool has small 于1 melt and in wide to wide MWD. in processing process in, low MI can obtain melt strong/high degree. more wide MWD product grade more 适于挤塑, is it tool has more high production speed degree, relatively low pressure but also melt fracture trend decrease/reduce.

         blow molding:

         in USA sales HDPE1/3 above used for blow molding applications. this scope/range from 装漂白 agent, machine 油, agent, and water bottle to large type 冰箱, automotive material and 筒罐. blow molding product grade features indicators, melt strong/high degree, ES-CR and tough property, and used for sheet/slice and hot molding application grade versus 似, versus product grade can using/adopting.

         injection molding:

        HDPE has 数不清 application, scope/range from can heavy use thin material to 5-gsl罐, 消费国 inner production HDPE 1/5. injection molding product grade generally melt 指数5～10, has tool has tough property relatively low flow property product grade and tool has can processing property relatively high flow property product grade. applications day use product and food thin packaging material; has tough property, resistant use food and coating material 罐; high resistant ring force cracking application, small type machine material and 90-gal waste 罐.

         rotational molding:

         using/adopting this type of processing method material generally by powder formed powder material, make its in hot ring in melt flow. rotational molding use type PE: general purpose and can crosslinked type. general purpose grade MDPE/HDPE usually density scope/range from 0.935 to 0.945g/CC, tool has narrow MWD, make product tool has high impact property and most small warpage, its melt scope/range generally is 3—8. more high MI product grade usually suitable, is it tool rotational molding products impact property and resistant ring force cracking property.

         high property can rotational molding application utilizing its chemical can crosslinked product grade features can. this product grade in cycle 第一段, flow property good, rear crosslinked formed its resistant ring force cracking property, tough property. wear resistance and resistant gas property. can crosslinked PE唯一 suitable for large type container, scope/range from 500-gal运输 various chemical product to 20,000-gal农 use 储箱.

         film:

        PE film processing generally use 普通吹 film processing or processing method. large more 数PE used for film, general purpose low density PE(LDPE) or property low 密PE(LLDPE)都 can use. HDPE film grade generally used for requirements excellent tensile property and good anti property 方. 例如, HDPE film used for product bag, bag and material packaging.