Page 489 - Injection Molding Advanced Troubleshooting Guide

Index 489

scratch 300, 414 silver streaks 413
scratch and mar 320 sink 72, 101, 261, 283, 402, 403, 412, 452,
scratches 369 454
screw 135, 161, 171, 187, 201, 426 sink index 467
screw design 425, 454, 474 sintered metal 476
screw L/D 161 sizing agents 316
screw recovery 201, 417 sleeves 359
screw recovery rate 324, 454 slide 185, 350, 374
screw recovery speed 167, 175, 403, 474 slides 44, 229, 277, 279, 290
screw rotate 258 sliding ring 250
screw rotate delay 201 snapping 223
screw rotate speed 266 solenoid 406
screw rotational speed 183 solvents 227
screw speed 229 splay 53, 90, 91, 98, 120, 137, 186, 197, 209,
scuffing 340 231, 413, 421, 423, 445
scuffs 370 spotted 366
second-stage pressure 225, 230, 240, 283, spotting blue 22
284, 321, 347, 356, 364, 382, 399, 433, 453, spotty 319
474 spreader tip 97, 194, 269
second-stage time 241, 322, 399, 453 sprue 147, 242, 246, 260, 268, 431
second-stage velocity 305 sprue break 434
second-stage volume 284, 305 sprue bushing 169, 215, 236, 383, 401, 434
self-locking cylinder 43 sprue bushing seat 158
semi-crystalline 97, 197, 244, 251, 252, 264, sprue opening 270
269, 344, 347, 395, 403, 412, 426, 442, 463, sprue picker 372
468 sprue puller 434, 436
sequentially valve gated 303 sprue sticking 423
sequential valve gates 95, 477 stalling 299, 303
sharp corners 224, 228 startup 384
shear 146, 156, 175, 184, 229, 235, 417, 419, startup parts 302
427 steel temperature 327, 339
shear imbalance 104 steel tools 288
shear rates 38, 103, 270, 385 stick 225
shear viscosity study 300 sticking 47, 72, 101, 185, 337, 342, 345, 347,
short shot analysis 300 356, 358, 453, 465
short shots 53, 72, 101, 119, 166, 192, 272, 377, sticking on cover 337
383 sticking on ejector 346
shot size 245, 250, 258, 379, 419 STOP 4, 18, 225, 252, 261, 280, 282
shrink 226, 239, 246, 347, 399, 403, 406, STOP analysis 288
453, 455 STOP method 147, 370, 378, 466
shrinkage 283, 458, 463 STOP methodology 217, 303, 383
shrink factor 252, 253, 283 STOP process 146, 339, 348, 373
shrinking 338, 339 STOP troubleshooting 227, 231, 243, 246,
shrink on 261 364
shrink rates 261, 412 straight lifters 349
shutdown 187 straight through sprue style 96
shut off 282, 287, 289 stratification 233
shut-off 44 streakiness 191
shutoff 214 streaking 199, 231
shutoff surfaces 134 streaks 209
silo 206, 222, 237 stress 227, 458, 459