Page 488 - Injection Molding Advanced Troubleshooting Guide

488 Index

polyester 315, 343, 352 R
polyesters 81, 171, 230, 415, 441
polyethylene 155, 237 radius 224, 228, 406
polypropylene 38, 90, 132, 146, 155, 193, 197, rapid mold heating 475
207, 237, 272, 341, 359, 366, 373, 425, 436, rapid mold heating and cooling 323
462, 465, 429 read-through 261, 320, 326, 363, 365, 366
polystyrene 196 record grooves 299, 300
poppet valve 402 recording 299
porous steel 58 recovery speeds 156
post-gate cavity pressure 400 regeneration heaters 84
post-gate transducer 114 regrind 95, 138, 163, 177, 196, 219, 231, 264,
post-mold handling 464 271, 297, 307, 394, 450
post-molding 224 release 339
post-mold shrinkage 243, 244 release agents 179, 190, 232, 264, 344, 353,
PP 35, 204, 205 361, 442
PPO 179 relief 54
preload 290 residence time 132, 155, 187, 189, 207, 225,
preloaded push pins 342 235, 415, 419, 474
pressure 76 resin remover 342
pressure differential 243 restriction 271
pressure drop 103, 115, 146, 202, 246, 266, return air 84
270, 321, 379, 403, 453, 462 reverse-flow thermolator 169, 424
pressure-drop study 38, 39 Reynolds number 126
pressure gauge 273 ribs 347, 381
pressure limited 29, 38, 39, 86, 203, 265, rib to wall 398
266, 306, 310, 379 rib to wall ratio 458
pressure limiting 66 ring gate 37
pressure loss 34, 96 ring vent 421
pressure profile 399 rippled surface 323
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pressure relief valve 43, 294 RJG Decoupled III process 394
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pressure response 286 RJG Decoupled Molding 284, 379, 400
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pressure-sensitive film 440 RJG Decoupled process 382
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preventative maintenance 427 RJG eDART 23, 74, 84, 113, 203, 243, 273,
Priamus System Technologies 112 286, 410
process control 122, 426 RJG Technologies 111, 122
process monitoring 23, 71, 117 robot 78, 217, 226, 263, 352, 370, 465, 468
process monitoring curves 379 root cause 1
process monitoring system 76 rubber gels 220
process window 225 rubber modifiers 328
profile 235 ruby stone 374
profiled first-stage fill velocity 333 runner 242, 246, 260, 268, 297, 313
projected area 283, 292 runner length 380
proximity switches 45
pullers 358 S
pull sink 408
purge 91, 132, 342 sand-blasted 320, 324, 325, 342
purging 163, 168, 186, 200 sand/glass blast 324
purging compound 92, 196 scale buildup 123, 404, 434
PVC 132, 155, 171, 189, 190, 221, 235, 441 scientific molding 30
pyrometer 22, 99, 106, 120, 365, 460 scrapes 279, 369
scrap recording sheets 14