Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

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Wave-like lines appear on the product surface

Surface waviness requires stable injection speed and mold temperature

Injection Molding wavinessflow instabilitymold temperatureinjection speed

Quality fluctuations in particle size, shape, and moisture during pelletizing

Pelletizing requires matched speed and drying

Material Drying pelletizingpellet cuttingdryingparticle quality

Improper draft angle design, product sticking to mold or deforming

Draft angle needs to be designed according to shrinkage rate and product depth

Molds & Tooling draft angledemoldingshrinkage rate

Product has short shots, flash, or unstable dimensions

Injection pressure needs to be reasonably set according to material and product

Injection Molding injection pressureholding pressureV-P switchover

Cellulose acetate butyrate has poor thermal stability during processing

Thermal stability needs to be addressed from antioxidants and temperature control

Processing Machinery thermal stabilityantioxidantdegradationtemperature

Complex cross-section profile dimension control difficult

Profiles require precise sizing sleeves and sufficient cooling

Extrusion & Post profilesizing sleeveshrinkage ratecooling

Cracking, deformation, or poor coating occurs during secondary processing

Post-processing needs to consider material state and compatibility

Material Drying post-processingmachiningcoatingweldingPA brittleness

Wall thickness >5mm thick-walled products have prominent sink marks and bubble problems

Thick walls require extended holding pressure and cooling time

Molds & Tooling thick-wall injectionextended holding pressuresink markcooling

Screw parameters not matching the material affect processing quality

The screw needs to match the material melting characteristics

Processing Machinery screwcompression ratioL/D ratioplasticization

Mechanical properties, appearance, and dimensions change after aging

Long-term aging needs to be addressed from formulation and use environment

Material Drying long-term agingUVantioxidantPA weather resistance

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