TPU 2587A〈TPU 2587A> PBT中文名称聚对苯二甲酸丁酯，简称饱和聚酯，系高结晶性热可塑性塑料。
PBT Chinese name is butylbutylene terephthalate, which is called saturated polyester, and is of high crystallinity thermoplastics.
优点：1、机械性质安定抗张强度与抗张模量和尼龙相似；2、摩擦系数小有自润性；3、吸水率低；4、电气性质优良；5、尺寸安定性良好；6、耐***性、耐油性***。用途：1、电子电器：无熔线断电器、电磁开关、驰返变压器、家电把手、连接器、外壳等；2、汽车：车门把手、***杆、分电盘盖、挡泥板、导线护壳、轮圈盖等；3、工业零件：OA风扇、键盘、钓具卷线器、零件、灯罩等。
Advantages: 1, the mechanical properties of stability resistant to tensile strength and tensile modulus and nylon similar; 2, ***all friction coefficient is self moistening; 3, low water absorption; 4, excellent electrical properties; 5, good stability in size; 6, resistant character, oil resistance is excellent. Uses: 1, electronic appliances: no fuse wire broken electrical appliance, electromagnetic switch, reversion transformer, household appliance handle, connector, shell, etc.; 2, car: door handle, bumper, split cover, fender, wire shield, wheel cover, etc. 3, industrial parts: OA fan, keyboard, fishing gear reel, spare parts, lampshade and so on.

ABS塑料在我国主要用于制造仪器仪表、家用电器、电话机、电视机等的外壳及电镀用的ABS塑料，使其赋予金属光泽，ABS用于代替金属。我厂生产的各类型号电冰箱的内胆及各种塑料制品中，ABS注塑制品占电冰箱塑料制品总数的88%以上工艺性ABS属于无定形聚合物，无明显熔点.
In our country, ABS plastics are mainly used in the manufacture of instruments, household appliances, telephone sets and TV sets, and the ABS plastics used in electroplating to make metal lustre, and ABS is used in place of metal. In the internal gallbladder and various plastic products of various types of refrigerators produced by our factory, the ABS injection products account for more than 88% of the total of the total of the refrigerator plastic products, which belong to the amorphous polymer and h***e no ***ious melting point.

EVA 1、***乙烯含量在5%以下的EVA，其主要产品是薄膜、电线电缆、LDPE改性剂、胶粘剂等；2、***乙烯含量在5%~10%的EVA产品为弹性薄膜等；3、***乙烯含量在20~28%的EVA，主要用于热熔粘合剂和涂层制品；EVA是由LLDPE（线性低密度聚乙烯）和醋酸（VA）共聚而成。
EVA 1, EVA with ethylene acetate content below 5%, its main products are film, wire and cable, LDPE modifier, adhesive and so on; 2, ethylene acetate content in 5%~10% EVA product is elastic film, 3, ethylene acetate content in 20~28% EVA, mainly used in hot melt adhesives and coating products; EVA is from LLDPE (linear low density) Polythene) and acetic acid (VA) copolymerization.

LLDPE也是通过化学改性得来的。它是在乙烯聚合中引入丁烯、己烯、辛烯等少量的a-烯烃类单体而形成的共聚物。它具有与HDPE类似的分子构型，但降低了密度和结晶度。LLDPE有良好的耐环境应力开裂性，其机械性能也优于LDPE，因此，其应用范围也相应地扩大了。而氯化聚乙烯（CPE）也是化学改性的产物。
LLDPE is also chemically modified. It is a copolymer formed in ethylene polymerization by introducing a ***all amount of a- olefin monomers, such as butene, hexene and octene. It has a molecular configuration similar to HDPE, but reduces the density and crystallinity. LLDPE has good resistance to environmental stress cracking, and its mechanical properties are superior to LDPE. Therefore, its application scope has expanded correspondingly. Chlorinated polyethylene (CPE) is also a product of chemical modification.

HDPE通过氯化后的产物。氯（CL）部分取代HDPE分子中的氢（H），使分子受到结晶性***，从而使它变得更柔软，并有一定的弹性。它不仅可以用挤出或注塑等方法加工成CPE制品，广泛用于建筑、电器等方面，而且CPE本身成为一种优良的改性剂，可以通过物理共混的方法改善PE材料的阻燃性和PVC材料的抗冲击性。
HDPE passes the product after chlorination. Chlorine (CL) partially replaces the hydrogen (H) in the HDPE molecule, causing the molecules to be destroyed by crystallization, making it softer and more flexible. It can not only be processed into CPE products by extrusion or injection molding, but also widely used in c***truction and electrical appliances, and CPE itself becomes a fine modifier. It can improve the flame retardancy of PE materials and the impact resistance of PVC materials by physical blending.

PA66的收缩率在1%~2%之间，加入玻璃纤维添加剂可以将收缩率降低到0.2%~1% 。收缩率在流程方向和与流程方向相垂直方向上的相异是较大的。PA66对许多溶剂具有抗溶性，但对酸和其它一些氯化剂的抵抗力较弱。
The shrinkage of PA66 is between 1%~2%, and the addition of glass fiber can reduce the shrinkage to 0.2%~1%. The shrinkage rate is different from that in the vertical direction of the flow direction. PA66 is resistant to many solvents, but is less resistant to acids and other chlorinated agents.

PC‖原料：聚碳酸酯PC‖1010NH是一款高强度透明PC‖材料，是产品工程师在透明产品设计时所选用的一款常用材料，常被注塑成各式各样的透明或者半透明制件，可应用于汽车车灯等部件。a、原材料受潮————干燥原料
PC material: polycarbonate PC 1010NH is a high strength transparent PC material. It is a common material used by product engineers in the design of transparent products. It is often injected into all kinds of transparent or translucent parts, which can be used in car lights and other parts. A and raw materials are dampened - dry raw materials
??b、排气不良————改进模具设计
Poor B and poor exhaust gas -- improving mold design
??3、树脂变色、黑点
Resin 3, resin discoloration, black spot
??a、料筒、喷嘴积料————清理料筒和喷嘴
A, cylinder and nozzle material - cleaning cylinder and nozzle.
??b、成型温度过高————降低成型温度
B, forming temperature too high -- reducing molding temperature
??4、制品未充满
4, not full of products
??a、物料塑化不够————提高料筒温度
A, material is not plasticized -- increasing the barrel temperature.
??b、模具温度过低————提高模具温度
B, mold temperature is too low -- improve mold temperature
??c、喷嘴溢料————调整模具位置
C, nozzle overflow - adjust the position of the die.

POM☆原料可在-40℃～100℃温度范围内长期使用。POM☆极易分解，分解温度为280℃，分解时有刺激性和腐蚀性气体发生。故模具钢材宜选用耐腐蚀性的材料制作。力学性能POM☆强度、刚度高，弹性好，减磨耐磨性好。
POM material can be used for a long time in the range of -40 to 100 C. POM is easy to decompose, decomposition temperature is 280 degrees, and there are excitant and corrosive gases in decomposition. Therefore, die steel should be made of corrosion-resistant material. The mechanical properties are POM, high strength, high rigidity, good elasticity, good abrasion resistance.

PBT聚对苯二甲酸***酯，又名聚对苯二甲酸四次甲基酯。英文名；Polybutyleneterephthalate。简称PBT PBTP或PTMT，它是对苯甲酸与1,4-***的缩聚物。可由酯交换法或直接脂化法经缩聚而制得，今后的发展趋势为直接酯化法生产。PBT和PET一起被称为热塑性聚酯。
PBT poly (butylene terephthalate), also known as terephthalic acid, four methyl ester. English name; Polybutyleneterephthalate. Referred to as PBT PBTP or PTMT, it is a polycondensation of benzoic acid and 1,4- butanediol. It can be prepared by transesterification or direct esterification by condensation. The development trend in the future is direct esterification. PBT and PET are called thermoplastic polyester together.