المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

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LLDPE extrusion melt temperature drift

Melt temperature drift = shear heat + control detuning.

Extrusion & Post LLDPE; extrusion; melt temperature; shear heat; PID

LLDPE blown film bubble breakage

Bubble breakage = weak points + low strength.

Extrusion & Post LLDPE; blown film; bubble breakage; melt strength; blending

LLDPE '2079851475616104452 sink marks

Sink mark = compensation feeding.

Injection Molding LLDPE; '2079851475616104452; sink mark; holding pressure; thick wall

LLDPE '2079851475616104452 flash

For flash, first reduce pressure.

Injection Molding LLDPE; '2079851475616104452; flash; holding pressure; clamping

LLDPE '2079851475616104452 warpage

2079851475616104452 deformation = cooling balance.

Injection Molding LLDPE; '2079851475616104452; warpage; shrinkage; cooling

LLDPE film die lines

Die lines = die lip condition.

Extrusion & Post LLDPE; film; die lines; die lip; PPA

LLDPE film haze

Haze = surface + crystallization; mLLDPE is the upgrade path.

Molding Process LLDPE; film; haze; transparency; metallocene

LLDPE film longitudinal tear

Processing Machinery LLDPE; film; longitudinal tear; draw ratio; anisotropy; balance

LLDPE film heat sealing problem

For heat sealing, first check the grade's melting point and comonomer.

Molding Process LLDPE; film; heat sealing; hot tack strength; comonomer

LLDPE Stretch Film Insufficient Self-Adhesion

Stretch film tack = grade + tackifying system.

Extrusion & Post LLDPE;stretch film;self-adhesion;PIB;tackifier

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