Problem & Solution

Practical answers to common plastic material challenges

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ABS brittle cracking——poor runner design

Molds & Tooling ABS；brittle cracking；runner；uneven filling；internal stress

ABS water content causing product bubbles and brittleness

Material Drying ABS；bubbles；brittleness；catalytic cracking；drying

ABS product warpage——glass fiber orientation type

Orientation-type warpage relies on gate design, not on hard pressing by cooling.

Molds & Tooling ABS；glass fiber；orientation；anisotropy；warpage

ABS injection cycle too long, low capacity

Injection Molding ABS；molding cycle；cooling time；water circuit；conformal cooling

Post-shrinkage dimensional change of ABS parts

Molds & Tooling ABS；post-shrinkage；dimensions；aging；stress relaxation

Inconsistency between cavities of ABS multi-cavity mold

Molds & Tooling ABS；multi-cavity；runner balance；uneven filling；cooling

ABS cold slug mark

The antidote for cold slug marks is the cold slug well + nozzle temperature.

Molds & Tooling ABS；cold slug mark；cold slug well；nozzle temperature；gate

ABS nozzle drool

Molds & Tooling ABS；drool；nozzle；suck-back；cold slug mark

ABS cushion fluctuation causing alternating short shot and flash

When short shots and flash appear alternately, suspect the check ring first.

Injection Molding ABS；check ring；cushion；metering instability；backflow

ABS granule hopper bridging

If the feeding is unstable, no matter how accurate the process is, it is in vain.

Molding Process ABS；bridging；hopper；feeding；crushed material

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