(1)(2)
1
(hesitation)
(4)
(5)4(multi-gate)
(3)
(race track)
2
3(weld line)
(air trap)
!&
(6)56
(viscous heating)
(1)(2)
(3)
(4)
(5)
(1)(2)
!'
(3)
(4)
(heat conduction)
(4)
<2>
<1>
<3>
(heat convection)
(5)
(hot spot)
(1)(2)(3)
(4)7
((
)
)
(1)(2)
8
(3)
\"
(shear deformation)
(1)(2)
()1
(
10,000 1/sec)
9
(1)(2)
(
1Mpa)
(3)
PmPnPg
\"
Generic Name Acrylonitrile Butadiene Styrene Ethylene Vinyl Acetate Polystyrene Polyethylene Nylon 6 Nylon 66 Polybutylene Terephthalate Polycarbonate Polyethersulphone Polymethyl Methacrylate Acetal Polyphenylene Sulphide Polypropylene Polyvinyl Chloride Styrene Acrylonitrile Thermoplastic Olefin Abbreviation ABS EVA PS PE PA6 PA66 PBT PC PES PMMA POM PPS PP PVC SAN TPO Maximum allowable shear rate(1/sec) 40,000 30,000 40,000 40,000 60,000 60,000 50,000 40,000 50,000 40,000 20,000 50,000 100,000 20,000 40,000 40,000 Pc
(tp-td)
tf-tf1tf1-tp
td
Pn
Pg
Pc
\"
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