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Problem & Solution

Practical answers to common plastic material challenges

1506 questions
Q
Large weight fluctuation of general-purpose polyethylene injection molded products
Q
Roundness out of tolerance of general-purpose polyethylene injection molded products
A
Roundness out of tolerance is caused by non-uniform shrinkage, and needs to be improved from three aspects: cooling symmetry, gate design, and wall thickness uniformity.
Injection Molding roundness out of tolerance anisotropic shrinkage uniform cooling gate position uniform wall thickness
Q
Mismatch of the melt flow rate of general-purpose polyethylene raw material causing processing difficulties
A
MFR mismatch needs to be solved by selecting suitable grades and adjusting process parameters, and the key is to establish an incoming material MFR inspection system.
Injection Molding melt flow rate grade selection incoming material inspection process adjustment raw material mixing
Q
Environmental stress cracking appears in general-purpose polyethylene injection molded products
Q
Stress whitening appears near the gate of general-purpose polyethylene injection molded products
Q
Dimensions of general-purpose polyethylene injection molded products continue to change after demolding
Q
General-purpose polyethylene injection molded products surface cracking/microcracks
Q
General-purpose polyethylene injection molded products uneven color/color difference
Q
General-purpose polyethylene injection molded products underfill/short shot
Q
General-purpose polyethylene injection molded products surface flow marks
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