水口设定：流道长度大小确定.doc

图 6-4 材料的流道直径图，其中，G=塑件重量(g); S=塑件厚度（mm）; D=参考直径(mm)图 6-5 流道长度与长度系数对于流动直径的影响最初估算的流道直径为：其中，D = 流道直径 (mm)；W = 塑件重量 (g)； L =流道长度 (mm)。一般无法填充料之塑料的典型流道尺寸列于表 6-。表6-1 无填充料之塑料的典型流道尺寸材料直径材料直径mminchmminchABS, SAN5.0-10.03/16-3/8Polycarbonate聚碳酸脂(PC)5.0-10.03/16-3/8Acetal聚缩醛树脂3.0-10.01/8-3/8Thermoplastic polyester热塑性聚脂树脂3.0-8.01/8-5/16Acetate5.0-110.3/16-7/19Thermoplastic polyester (reinforced)补强热塑性聚脂树脂5.0-10.03/16-3/8Acrylic 压克力8.0-10.05/16-3/8Polyethylene聚乙烯2.0-10.01/16-3/8Butyrate5.0-10.03/16-3/8Polyamide聚丙烯酸脂5.0-10.03/16-3/8Fluorocarbon聚氟碳树脂5.0-10.03/16-3/8Polyphenylene oxide6.0-10.01/4-3/8Impact acrylic耐冲击压克力8.0-10.05/16-1/2Polyphenylene聚丙烯5.0-10.03/16-3/8Ionomers2.0-10.03/32-3/8Polystyrene聚苯乙烯3.0-10.01/8-3/8Nylon 耐隆2.0-10.01/16-3/8Polysulfone聚氟乙烯6.0-10.01/4-3/8Phenylene6.0-10.01/4-3/8Polyvinyl (plasticized)聚氯乙烯3.0-10.01/8-3/8Phenylene sulfide6.0-10.01/4-1/2PVC Rigid硬质聚氯乙烯6.0-16.01/4-5/8Polyallomer异聚合物5.0-10.03/16-3/8Polyurethane聚尿素树脂6.0-8.01/4-5/16每当流道有分支，其分支流道的直径应该要小于主流道的直径，因为只有较少量的熔胶会流进分支。而且，从经济观点而言，应减少流道内的的熔胶量，以减少废料。当主流分流到个分支流道时，主流道直径(dmain)和分支流道直径(dbranch)的关系为：dmain dbranch表 A-1 常用树脂的建议熔胶温度与模具温度材料名称流动性质 (CF)熔胶温度(CF)模具温度(CF)顶出温度(CF)MFR g/10min测试负荷 kg测试温度C最小值建议值最大值最小值建议值最大值建议值ABS 3510220200/392230/446280/53625/7750/12280/17688/190PA 12 955275230/446255/491300/57230/8680/176110/230135/275PA 6 1105275230/446255/491300/57270/15885/185110/230133/271PA 66 1005275260/500280/536320/60870/15880/176110/230158/316PBT 352.16250220/428250/482280/53615/6060/14080/176125/257PC 201.2300260/500305/581340/64470/15895/203120/248127/261PC/ABS125240230/446265/509300/57250/12275/167100/212117/243PC/PBT 465275250/482265/509280/53640/10460/14085/185125/257PE-HD 152.16190180/356220/428280/53620/6840/10495/203100/212PE-LD 102.16190180/356220/428280/53620/6840/10470/15880/176PEI 155.00340340/644400/752440/82470/158140/284175/347191/376PET 275290265/509270/518290/55480/176100/212120/248150/302PETG 235260220/428255/491290/55410/5015/6030/8659/137PMMA 103.8230240/464250/482280/53635/9060/14080/17685/185POM 202.16190180/356225/437235/45550/12270/158105/221118/244PP 202.16230200/392230/446280/53620/6850/12280/17693/199PPE/PPO 4010265240/464280/536320/60860/14080/176110/230128/262PS 155200180/356230/446280/53620/6850/12270/158