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Problem & Solution

Practical answers to common plastic material challenges

11636 questions
Q
Unstable cycle of random copolymer polypropylene '2079851475616104452
Q
Large injection pressure fluctuation in random copolymer polypropylene '2079851475616104452
Q
Large performance differences between different batches of random copolymer polypropylene raw material
A
Batch differences are caused by raw material production fluctuations; a complete incoming material inspection and batch management system needs to be established.
Material Analysis batch differencemelt flow rateincoming material inspectionbatch managementprocess adjustment
Q
Unstable screw retraction in random copolymer polypropylene '2079851475616104452
Q
Low tensile strength of random copolymer polypropylene injection molded products
Q
Dimensions of random copolymer polypropylene injection molded products too small, below the lower limit
A
Undersized dimensions are caused by excessive shrinkage and need to be controlled by strengthening holding pressure, lowering temperature and extending cooling time.
Extrusion & Post undersized dimensionsexcessive shrinkageinsufficient holding pressurepost-shrinkagegate freezing
Q
Burnt marks/burn spots appearing in random copolymer polypropylene injection molded products
Q
Coaxiality out of tolerance of random copolymer polypropylene injection molded products
Q
Nozzle clogging in random copolymer polypropylene '2079851475616104452
Q
Dimensions of random copolymer polypropylene injection molded products too large, exceeding the upper limit
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