문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

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PP Jetting Mark

Hit the wall first then spread—jetting marks come no more.

Molds & Tooling PP;jetting mark;gate;injection speed;snake-like mark

PP Short Shot

PP short shots are mostly a balance problem of speed and venting.

Injection Molding PP;short shot;injection speed;venting;wall thickness

PP Part Stress Whitening

Molding Process PP;stress whitening;ejector whitening;yielding;microvoid;assembly interference

PP Tiger Stripe (Flow Mark)

Tiger stripes are flow imprints of rubber phase distribution—stable speed is the core.

Injection Molding PP;tiger stripe;flow mark;injection speed;rubber phase

PP Weak Weld Line Strength

PP weld lines must complete entanglement before crystallization.

Molds & Tooling PP;weld line;crystallization;venting;melt temperature

PP Flash

For flash of low-viscosity materials, pressure restraint comes first.

Injection Molding PP;flash;low viscosity;injection pressure;clamping force

PP Dimensional Post-shrinkage Drift

PP dimensions should be managed by 'post-aging dimension'.

Molds & Tooling PP;post-shrinkage;post-crystallization;dimensional drift;annealing

PP Sink Mark (Shrinkage)

Molds & Tooling PP;sink mark;shrinkage;holding pressure;rib thickness

PP '2079851475616104452 Warpage Deformation

Injection Molding PP;warpage;shrinkage rate;mold temperature;crystallization

POM Welding Difficulty

Processing Machinery POMultrasonic weldingenergy directorhot plate welding

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