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POM SC631╂POM SC631 TPUAH-650 EPDM 日本三井化學 3722P TPU德國巴斯夫S95A PC/ABS 廣州LG GN-5001RFG IXEF 比利時蘇威 1022/RD M01 POM 美國泰科納 S9064 PP泰國SCG化工P700J PA66美國杜邦8018HS PA12 法國阿科瑪 2533 ABS中石油吉化0215A(SQ) TPEE美國杜邦HTR8602 BK PP韓國韓華道達爾FB51175 PA66瑞士EMS AS/VO HDPE中石化茂名HXB4505M POM 泰國三菱工程 F20-54PC/ABS 沙伯基礎 C1000HF PBT美國杜邦S600F40 NC010 LLDPE中石化廣州DFDA-2001T TPU拜耳優得U-90A20 LDPE中石化燕山1I40A PA66瑞士EMS GV-5 BK PP韓國樂天化學SJ560S POM 日本杜邦 100P PA1010 美國杜邦 RS LC1000 PC日本三菱工程 GSH2020DR PA66美國杜邦FR7025V0F NC010 PP韓國韓華道達爾BI455 PP中石化鎮海T30S PPS日本出光C-140SF BK POM/PTFE 德國赫斯特 C9021TF PPS日本東麗A673M-B TPU德國巴斯夫E1164D50 POM 荷蘭杜邦 100ST PA6T 日本三井化學 RA230N AS(SAN)馬來西亞東麗A37C 333 POM SC631╂POM SC631 POM SC631╂POM SC631
PBT The rheological property of PET is better in the melting state, and the effect of pressure on the viscosity is larger than that of the temperature. Therefore, the flow of the melt is changed mainly from the pressure. 1, the treatment of plastics is due to the PET macromolecule containing lipid base, which has a certain hydrophilicity. The pellets are sensitive to water at high temperature. When the moisture content exceeds the limit, the molecular weight of PET decreases, and the products are colored and crisp. Therefore, it is necessary to dry the material before processing, and the drying temperature is 150, 4 hours, generally 170, 3-4 hours. The air - ejection method is used to test whether the material is completely dry. Generally, the proportion of the recycled material should not exceed 25%, and the recycled material should be completely dried.
2, PET is chosen for injection molding machine. Because of its short time after melting point and high melting point, it is necessary to choose injection system with more temperature control section and less friction heat when plasticizing, and the actual weight of products (water cut material) should not be less than 2/3 of machine injection volume. Based on these requirements, in recent years, Ramada has developed a small and medium-sized series of PET special plasticizing systems. The clamping force is selected by more than 6300t/m2.
3, mold and gate design, PET bottle embryo is usually molded by hot runner mold. Between the mold and injection molding machine template, it is best to have insulation panels, the thickness is about 12mm, and the heat insulation board will be able to withstand high pressure. The exhaust must be sufficient to avoid partial overheating or fragmentation, but the depth of the exhaust port is generally not more than 0.03mm, otherwise it is easy to produce the fly edge.
4, the temperature of the melt glue can be measured by air ejection method. At 270-295 degrees C, the enhancement level GF-PET can be set to 290-315 degrees C.
5, the injection speed is fast, and it can prevent the early solidification of the injection. But too fast, the high shear rate makes the material fragile. The ejection is usually completed in 4 seconds. POM SC631╂POM SC631 ABS廣州LGAF312B BK PA6印度朗盛BKV130 PVDF 法國阿科瑪 Kynar 721 PP臺塑5050 PPE 日本旭化成 L543V PA66美國杜邦FR72G25 EVA韓國韓華道達爾E260F PMMA 韓國LG IF830 TPU德國科思創（拜耳）UDH-92A10AH PA66美國DSM GS ABS日本UMGY637K LCP日本東麗L304T40 POE日本三井化學DF640 LLDPE沙特拉比格石化F2111BS ABS韓國三星GC-0700 BK TPU德國科思創（拜耳）392PC/ABS 德國科思創（拜耳） FR3200TV HDPE惠州中海殼牌5421B PVC香港利澤T-90A TPEE日本東麗4767NW TPEE韓國SK G172D PA66惠州南亞6512XX ENC3 PA66意大利波利.布蘭德A 33GF TPE德國膠寶TC5GPZ-S340 TPUAH-670 POM 德國赫斯特 C52021 PPO 基礎創新塑料 N110-701 PPO 基礎創新塑料 PX9406X POE美國陶氏7447 HIPS鎮江奇美PH-88SF EVA泰國石化N8038 PBT日本寶理CRN7000N PA6法國羅地亞C218V35 BK PA66惠州南亞6310 GNC2 PA66美國杜邦HTNFE150004 POM SC631╂POM SC631 POM SC631╂POM SC631
6, the lower the back pressure, the better, so as to avoid wear. Generally not more than 100bar. It is usually not used.
7. Do not use too long detention time to prevent the decline of molecular weight. Try to avoid the temperature above 300 degrees centigrade. If the shutdown is less than 15 minutes. It is only required to do air - fire treatment; if more than 15 minutes, the viscosity PE should be cleaned and the barrel temperature is reduced to PE temperature until the machine is reopened. Recycling
POM SC631╂POM SC631 PA12 瑞士EMS TR90 UV TPV 美國埃克森美孚 251-92 POM 日本旭化成 7554 LDPE韓國LGLB7000 PA6德國6G30UV EVA日本三井化學EV220ETRPOM 美國杜邦 DE-20171 POM 美國赫斯特 M25NAT TPE荷蘭DSMS4370 BK TPEE美國杜邦6356 PCT 美國杜邦 CG933 PEI 基礎創新塑料 EXUM0129 PP中石油撫順Z30S LCP德國赫斯特A700 BK PVDF 法國阿科瑪 2850 WR POM 德國赫斯特 C13031XS POM 南通寶泰菱 M270-44 PC基礎創新塑料 DFL4034PC基礎創新塑料(西班牙) 102X TPEE美國泰科納RF655 PETG 韓國SK PN100 LLDPE臺聚LL115C PP福聚366-3 PA12 法國阿托菲納 AESN P302TL GPPS臺化GP5250 PA9T 日本可樂麗 G1300H TPE蘇州吉力士RU2205-1PC基礎創新塑料 EXL9414T PA612瑞士EMS TV-3H POM 日本三菱工程 FU2020 PP中石化上海GM1600EPC/ABS 基礎創新塑料 MC5400 ABS基礎創新塑料GDT2510-1000 PVDF 美國蘇威 TA-6010/0000 LCP日本新日鐵住金HM-402-NC POM SC631╂POM SC631 POM SC631╂POM SC631
The recycling of German PET bottles to "Chinese sweaters" is also worth thinking, and there are about 8000000 PET bottles in the German market each year. The recycling company collected the bottles, crushed them into pieces or crushed them, and sold it to China at a relatively high price. According to the figures, a bottle of 16 liters of drink can be made into a sweater. Before 1993, all the plastic bottles were in the trash, a small part of the recycling. Since 4 years ago and the implementation of the tank fee, supermarket must recycle empty bottles, PET bottles, embarked on a journey to China, Wan Li: into synthetic crude wool sweater, and then returned to Germany, homecoming. China's textile industry has a huge demand for plastics. Although traders will add a bit more to the price of German recycling companies, imports are cheaper than their own raw materials. The transport from Hamburg to Hongkong was very low, because there were a lot of vacancies on the ship after the freighter came from China and unloaded the textile. The cost of production in China is very low, because the labor force is low, and the environmental and social standards are not perfect. In Chinese factories, these PET materials are classified according to color, cut into fragments and melted. After processing, PET bottles were returned to Germany in the form of textiles and sold in Germany. The value creation here is huge: a synthetic woolen sweater costs between 50 and 100 euros, and the material used is only 32 euro cents. The Far East can't see the end of the old plastic starvation. China has not been able to meet its needs with raw materials. In this context, second hand materials like PET are multiplied. Plastic empty bottles are used as raw materials in China, which shows that there is a world market of used raw materials in fact. 10 years ago, garbage was thrown into a garbage dump. "We were a consumer and discarding society." The example of China's processing Germany reselling illustrates the problem. "This market development shows to all consumers that some rubbish is indeed regenerated and reused."
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