Problem & Solution

Practical answers to common plastic material challenges

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HDPE film gel particles and fisheyes

Extrusion & Post HDPE; film; gel particle; fisheye; screen; mixing

HDPE pipe dimensional instability

Extrusion & Post HDPE; pipe; dimension; fluctuation; temperature; haul-off

HDPE pipe screw wear and output decline

Extrusion & Post HDPE; pipe; screw wear; output; melt pressure; monitoring

HDPE pipe haul-off skew deformation

Extrusion & Post HDPE; pipe; haul-off; centerline; deformation; alignment

HDPE pipe outer diameter out of tolerance

Extrusion & Post HDPE; pipe; outer diameter; out of tolerance; vacuum degree; sizing sleeve

HDPE pipe inner wall chatter rings

Extrusion & Post HDPE; pipe; inner wall; chatter ring; vacuum sizing; haul-off

HDPE extrusion screen clogs quickly

For fast screen clogging, first check the cleanliness of the material source.

Extrusion & Post HDPE; extrusion; screen; clogging; impurities

HDPE film poor corona treatment

Corona effect = power + cleanliness + timeliness.

Extrusion & Post HDPE; film; corona; printing adhesion; slip agent

HDPE extrusion head pressure fluctuation

Tracing pressure fluctuation: material, screw, screen, temperature.

Extrusion & Post HDPE; extrusion; pressure fluctuation; feeding; screen

HDPE extrusion sheet melt fracture

Exit roughness = raise temperature, reduce speed, add aid.

Extrusion & Post HDPE; extrusion; melt fracture; die; PPA

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