Processing Machinery
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PA66 long glass fiber advantages
Problem Phenomenon
Short glass fiber reinforced parts fail impact and strength requirements, screw shearing and breaking fibers aggravates performance loss
Cause Analysis
Short glass fiber loses much of its length under screw shearing; long glass fiber LGFR-PA66 fiber bundles are protected by resin and not easily sheared, the retained length in the product is long, and mechanical properties are significantly higher
Solution
①Select long glass fiber reinforced grades for high mechanical requirements; ②Screw with low compression ratio design to reduce fiber breakage; ③Moderate injection speed to protect fiber length; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Key Takeaway
Long glass fiber is the upgrade route for PA66 reinforcement; preserving fiber length is preserving performance, coordinated screw and speed management is indispensable; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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