Problem & Solution

Practical answers to common plastic material challenges

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MP screw slipping

screw slipping is caused by premature melting; lowering feed section temperature is key

Extrusion & Post MP screw slipping feed section temperature premature melting flight deepening

MP large dimensional change with temperature

Extrusion & Post MP dimensional temperature sensitivity thermal expansion coefficient rigid filler annealing

MP compression molded product bubbles

Material Drying MP compression molding bubble preform powder drying vent groove pre-press degassing

MP low elongation at break

Material Analysis MP elongation at break molecular weight orientation control crosslinking degree

MP large compression set

Molding Process MP compression set crosslinking degree elastic recovery reinforcing filler

MP hardness too high

Material Analysis MP hardness too high crystallinity filler amount plasticizer

MP surface blooming exudation

Production & Quality MP blooming low molecular migration high molecular weight lubricant exudation

MP surface stress whitening

Molding Process MP stress whitening orientation stress annealing stress concentration

MP surface tiger-skin pattern

Injection Molding MP tiger-skin pattern injection speed multi-stage injection mold temperature control

MP fast thermal aging

thermal aging is caused by thermal oxidation; improving the antioxidant system is key

Material Analysis MP thermal aging thermal oxidation antioxidant high molecular weight

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