Problem & Solution

Practical answers to common plastic material challenges

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EVA film blocking is severe

Extrusion & Post EVA film blocking antiblocking agent winding temperature erucamide

EVA poor plasticization

Processing Machinery EVA poor plasticization screw compression ratio shear rate processing temperature

EVA internal inclusions

Production & Quality EVA inclusions raw material filtration environmental cleanliness recycled material sorting

EVA hardness is too low

Molding Process EVA low hardness rigid filler plasticizer crystallization control

EVA flatness is insufficient

Molds & Tooling EVA flatness shrinkage difference uniform mold temperature annealing treatment

EVA internal unmelted particles

Processing Machinery EVA unmelted particles plasticizing capacity processing temperature screw mixing

EVA toughness is insufficient with brittle fracture

Material Analysis EVA insufficient toughness molecular weight crosslinking control crystallization refinement

EVA impact strength fluctuates greatly

Molding Process EVA impact fluctuation dispersed phase particle size nucleating agent processing stability

EVA and HDPE blend delamination

Extrusion & Post EVA/HDPE delamination viscosity difference VA content compatibilizer

EVA film heat-sealing window is narrow

Processing Machinery EVA film heat-sealing window VA content temperature control accuracy heat-sealing speed

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