Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

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HDPE product low-temperature brittle cracking

Low-temperature applications: grade selection + rounded corners as double insurance.

Molding Process HDPE; low temperature; brittle cracking; impact resistance; sharp corners

HDPE injection molded product melt temperature unevenness

Melt uniformity relies on back pressure and screw mixing.

Injection Molding HDPE; '2079851475616104452; melt unevenness; back pressure; mixing

HDPE bottle mouth thread flash

Bottle mouth flash = a signal of mold fit wear.

Molds & Tooling HDPE; '2079851475616104457; bottle mouth; flash; mold wear

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

HDPE '2079851475616104452 large dimensional shrinkage

HDPE dimensional management = measured shrinkage + unified aging.

Injection Molding HDPE; '2079851475616104452; shrinkage rate; dimension; aging

HDPE '2079851475616104452 ejector whitening

Ejector whitening = large holding force + concentrated force.

Injection Molding HDPE; '2079851475616104452; ejector whitening; holding force; cooling

HDPE '2079851475616104452 weld lines

Weld lines: grab temperature, keep venting.

Injection Molding HDPE; '2079851475616104452; weld line; venting; melt temperature

HDPE film poor heat sealing

For heat sealing, first adjust the three elements, then check the film surface condition.

Molding Process HDPE; film; heat sealing; seal strength; slip agent

HDPE film poor opening

Opening is controlled by three controls: additives + tension + temperature.

Extrusion & Post HDPE; film; opening; blocking; slip agent

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