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FAQ

Questions

Why choose SANWA (Hong Kong)?
Why choose / buy SANWA(HONG KONG), The production of engineering plastics?
How to choose TPU plastic?

Processing issues

What do you need to pay attention to when you use TPU plastic during injection molding?
What do you need to pay attention to when you use TPU plastic during extrustion molding?
Dark brown spots
Brittle fracture
Bubbles ( Or Steelyard balance : stranded gas)
Burn marks
Plastic injection moulding machine of mucosa
Grain crack
Plastic degradation
Injection molded parts deforms
Injection molded cloak
Injection molded parts does not shrink
Surface roughness
Silver streak
Surface wrinkled skin texture
Color distribution
Fusion line location decline
Insufficient filling
Injection molded parts size differences
Systolic trace
Dirt marks
Sprue adhesion
Empty hole
Curved injection molded parts
Spraying trace
Surface layer (peeling)