Molds & Tooling
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GF-PC Surface Floating Fiber
Problem Phenomenon
GF-PC product surfaces are rough with visible glass fiber texture, poor appearance.
Cause Analysis
Low melt temperature/mold temperature causes poor resin encapsulation and fiber exposure; high-shear filling enriches fibers toward the surface; insufficient encapsulation is the essence; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Solution
①Increase melt temperature and mold temperature to maintain front temperature; ②Reduce injection speed to reduce shear and front turbulence; ③Enlarge the gate; ④For high surface requirements use texture or coating; ⑤Select grades with better encapsulation.
Key Takeaway
GF-PC floating fiber = 'insufficient encapsulation': raise temperature and slow down to let the resin wrap the fibers; the appearance surface needs process + texture + grade cooperation, and machine adjustment alone is hard to eradicate it.
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