Problem & Solution

Practical answers to common plastic material challenges

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Q

PP Mold Temperature and Crystallization

A

PP mold temperature 30-60°C is normal; take the upper limit for crystallization strength; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future pro...

Molds & Tooling mold temperature crystallization cycle strength

Q

PP Melt Temperature 200-280 Window

A

PP melt temperature 220-260°C is normal, 280°C is the degradation red line; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems

Molding Process melt temperature window degradation thin wall

Q

PP Low Moisture Absorption and Drying

A

PP is basically drying-free; moisture-affected material is remedied at 80°C×2h; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems

Material Drying PP drying low moisture absorption moisture-affected 80°C

Q

PP Impact Copolymer

A

Protecting the rubber phase of PP impact copolymer is the core; shear and temperature management; verification preserves toughness.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PP; impact resistance; copolymer; low-temperature toughness; rubber phase; shear heat

Q

PP High-Flow Grade Processing

A

For PP high-flow material, prevent flash; thin-wall filling is its strength; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems

Injection Molding high flow MFI flash thin wall

Q

PP Glass Fiber Reinforced Processing

A

For PP glass fiber material, upper-limit temperature and reduced speed, wear-resistant equipment; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar fu...

Molds & Tooling glass fiber melt temperature rotation speed wear resistance

Q

PP Recycled Material Ratio

A

PP recycled material is capped at 20-30%, use cautiously in performance and color parts; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future prob...

Processing Machinery recycled material ratio thermal history color hue

Q

PP Vent Groove Design

A

PP venting 0.02-0.04mm; shallow traps air and deep causes flash; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems

Molds & Tooling vent groove air entrapment flash depth

Q

PP Gate 50/60 Rule

A

The 50/60 rule for PP gates is a design standard; position and size are equally important; ensure feeding and prevent sink marks.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP; gate; 50/60 rule; wall thickness; feeding; sink mark

Q

PP Draft Angle 1-2°

A

PP draft angle is a design specification; textured surface compensation; ejection and surface are equally important.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP; draft angle; 1-2°; texture; ejection; deformation

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