,,, (spacer)
,,, 4 : 1 :, 2 : 3 : 32mm[0125 ] (pellet),,,, (pallet) 40,, 1000kg,, (block copolymer), ( ) (glycol) ( ), 32mm[0125 ], 25kg(55lb) 500kg(1,103lb) 1
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,,, 3, ( ), 5
, (degradation) 010% 4 1 50% 7246 2 010%, 100% 1 ( 5 ),, 100 C (210 F) 2-3 70 C (160 F) *, 4-6, 100 C (210 F) (12 ) (4 ),,, ASTM D570 (equilibrium moisture level) 6
5 6 (purge),, (vent) 08-1 ft 3 /(CFM), 25%,, -18 C (0 F), 7
!, 4 (100% ) 5556 (tear resistance), (tensile strength), (break elongation) 7 9 (melt index) (concentrates) 10 MS - 20 UV - 30 HS - 40 CB - (carbon black) 51 FR - ( <55D) 52 FR - ( 55D) (let-down ratio) 5 8
L/D( ) 20:1,, 25:1 6 5,,, (masterbatch) (cube blending) (carrier) PE PVC ( ) 10 ph 45-55 ph 7 (reverse taper),,, (drool) shut off, ( ), (bridge), 3:1-35:1, 60mm (236 ) 25-30mm (0100-0120 ) 9
(non-return valve) (shot weight) (cavity) 11 (freeze-off) (drool) ( 10 ) (suckback) (mold parting line) - (lateral slide action, (core pull) 100MPa(14kpsi), 48-69MPa(35-50 tons/in2) (clamp) (needle pyrometer ), 14 7 (flow length), 20 C ( 13 ), ( ) (stick),, ( ), (torque) 12, (HUT) (stroke), 45 C (113 F) (16 ), 10
, (overpacking), (turbulence) (55D ) (47D ) (sticking), (jetting), (flash) 15 16 11
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(sink mark), 72D-82D 4-5 /mm(101-127 / ) (4mm ) 44D-63D 5-6 /mm(127-152 / ) 35D-40D 7-8 /mm(178-203 / ) (rpm), 100rpm (034-055MPa[50-80psi]),, 15 3 6mm(025 ) 1-15 17,,,,,, (void) 1-2 13
,,, (notch),,,,,,,,,,, (sweep), 14
(fan), (flash), (tab) ( 18 ) (sprue) 05mm(002 ) (tunnel), ( 18 ) (land length) (05-1mm[002-004 ]), ( ), (47D ), (47D ) (degate), 15mm(006 ), (sprue bushing) (stick) 05-1mm(002-004 ) 25 (0044rad),, 05-1mm(002-004 ), ( (sprue puller)( Z, ) (sucker pin) ) (vent opening) 6mm(025 ) 004mm(00015 ) (turbulence) 75%,,,, (insulated runner) (hot runner), (runnerless) 08mm(003 ) (stripper) 15
05-2 (0009-0035rad) (draft), (, SFT, ) (pin ejector),,, 24, 50% 24, (knockout) (,, ), 13-25mm(05-1 ), 32mm(0125 ), : 45 C (115 F) : 7 : 70MPa(10,150psi) SFT: 16
8 32mm(0125 ) 05-3%, 19-21, (prototype) 8 17
(<190 C[<374 F]), 30 C (86 F),,, ( ) (flash) (projection),,,, 5526 : 140%(8) 64 C (45 C ): DuPont +008%( 15) 900bar (700bar ): -015%( 16) 2mm(32mm ): -013%( 17) :, 175-260 C (347-500 F) 120% 120 C (248 F) 4 (annealing), 01% (overmolding)( (insert) ) ( ), PBT,, ABS, 18
175-260 C (347-500 F) (pool) THF,,, (9 ), (splay) THF (PEL) 8 (TWA)200ppm, 15, (STEL)250ppm (purge) 8 TWA 100ppm 15 STEL 150ppm 8 TWA 01ppm 15 STEL 03ppm,,,, (pyrolysis),,, 300 C (572 F),,, (oxidation) 30, (THF) THF THF ( -14 C [7 F]), THF, 19
,, (2),, (Material Safety Data Sheet) (1) (2) (3) CO 2, 110 C (230 F),,, 20
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