문제 및 해결책
일반적인 플라스틱 재료 문제에 대한 실질적인 답변
Low weld line strength
Large shrinkage rate fluctuation
Polyester type has poor water resistance
Injection feeding difficulty
Slow crystallization of hard segments, later hardening
Hydrolysis degradation, molecular weight decrease
Thermal degradation causing yellowing
Re-absorption of moisture after drying
Color difference between TPU batches
Insufficient surface hardness of TPU