Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

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Q

Insufficient PSU Injection Pressure

A

The 80% injection pressure for PSU is clear process guidance; high speed and high pressure is the standard method; mold strength calculation ensures safety.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Injection Molding PSU; injection pressure; 80%; high speed and high pressure; short shot; multi-stage

Q

Improper PSU Back Pressure Setting

A

The 3~10 window for PSU back pressure is clear supplier guidance; failure modes in both directions must be prevented; linked debugging is the most efficient.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Molding Process PSU; back pressure; shear heat; bubbles; compactness; adjustment

Q

PSU High Mold Temperature and Low Cooling Efficiency

A

The cooling cost of PSU high mold temperature needs technical means to offset; plasticizing before mold opening is a practical technique for large parts; the balance point is found through testing.; After confirming effectiveness, solidify the parameters and practices into the work instructions t...

Molds & Tooling PSU; mold temperature; cooling; cycle; stress; variable mold temperature

Q

PSU Notch Sensitivity and Fracture

A

PSU notch sensitivity requires an absolute fillet principle in design; arc transition is a zero-cost strength improvement; stress management coordinates with structural design.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Molds & Tooling PSU; notch; fracture; fillet; stress concentration; design

Q

PSU Wall Thickness Design Constraints

A

PSU wall thickness constraints are hard boundaries determined by material flowability; the 1.5mm bottom line cannot be broken; advancing design review avoids mold waste.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Molds & Tooling PSU; wall thickness; flow length ratio; 1.5mm; design; flowability

Q

PSU Surface Scratches and Chipping

A

PSU surface protection starts with mold finish; processing and transfer links are high-incidence areas for damage; the appearance standards of transparent parts need whole-chain guarantee.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent...

Molds & Tooling PSU; scratches; chipping; surface finish; transfer; protection

Q

Combined Causes of PSU Silver Streaks and Bubbles

A

The multi-factor superposition characteristic of PSU silver streaks and bubbles requires systematic troubleshooting; verify drying, temperature, venting, and speed item by item; a single measure is difficult to cure.; After confirming effectiveness, solidify the parameters and practices into the ...

Material Drying PSU; silver streaks; bubbles; drying; venting; injection speed

Q

PSU Dents and Sink Marks

A

Treating PSU dents requires balancing the contradiction between temperature and stress; holding time is the main adjustment means; thinning thick-wall design is the root.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Injection Molding PSU; dents; sink marks; holding pressure; mold temperature; thick wall

Q

PSU Surface Impurities

A

Tracing PSU surface impurities covers three links: temperature, equipment, and raw materials; the intermittent characteristic points to material accumulated in dead spots; raw material cleanliness management cannot be ignored.; After confirming effectiveness, solidify the parameters and practices...

Material Drying PSU; surface impurities; decomposition; dead spots; raw material; cleanliness

Q

Cross Reaction Between PSU and POM/PA

A

The cross-linking risk between PSU-type materials and POM/PA is a clear industry warning; changeover cleaning cannot be a mere formality; taboo table management prevents human negligence.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent ...

Processing Machinery PSU; cross-linking reaction; POM; material changeover; cleaning; taboo

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