Molds & Tooling
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LCP Thin-wall Short Shot
Problem Phenomenon
Ultra-thin-wall products (0.1~0.3mm) are incompletely filled.
Cause Analysis
LCP melt solidifies instantly upon contacting the mold wall, and the flow front freezes as soon as filling speed slows slightly; flow length exceeding 150mm or improper gate design also causes short shot.; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience
Solution
①Use high-speed filling to exploit LCP's fast-solidifying characteristic; ②control flow length within 150mm; ③multi-point gates close to thick areas; ④appropriately increase melt and mold temperature.
Key Takeaway
LCP thin-wall filling is a race between speed and solidification; high-speed filling is the condition for realizing its thin-wall capability.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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