Problem & Solution

Practical answers to common plastic material challenges

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Product shows multiple defects (silver streaks, burnt, short shot, etc.)

Barrel temperature needs to be stably set according to the material recommended range

Processing Machinery barrel temperaturetemperature controlplasticizationcellulose acetate butyrate

PVA internal black speck carbonization

Processing Machinery PVAinternal black speckthermal carbonizationscrew cleaningtemperature control

Poor PVA plasticization

Processing Machinery PVApoor plasticizationscrew compression ratioshear rateprocessing temperature

PVA internal unmelted particles

Processing Machinery PVAunmelted particleplasticizing capacityprocessing temperaturescrew mixing

Insufficient PVA mixing

Processing Machinery PVAinsufficient mixingscrew mixing sectionkneading blockside feeding

Difficult PVA purging

Processing Machinery PVAdifficult purgingadhesionPE flushingdedicated purging compound

PVA material changeover residue

Processing Machinery PVAchangeover residuepurging materialscrew disassemblydead zone cleaning

Internal black speck carbonization of PU

Processing Machinery PU internal black specks thermal carbonization screw cleaning temperature control

Poor PU plasticization

Processing Machinery PU poor plasticization screw compression ratio shear rate processing temperature

Internal unmelted particles of PU

Processing Machinery PU unmelted particles plasticizing capacity processing temperature screw mixing

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