Molds & Tooling
3 조회수
PARA Nozzle Drooling and Freezing
문제 현상
PARA nozzle drooling or freezing alternates; improper reverse-taper nozzle design, unbalanced thermal management.
원인 분석
PARA uses reverse-taper nozzles to minimize drooling or freezing; nozzle temperature 260~290°C; improper temperature causes drooling or cold slug; hot runner design must match high-temperature crystalline polymers.
해결 방법
①Select a reverse-taper nozzle design; ②Control nozzle temperature at 260~290°C; ③Design the hot runner for high-temperature crystalline polymers; ④Regularly check nozzle heating.
핵심 요약
PARA nozzle reverse-taper design is the standard for drooling and freezing prevention; the 260~290°C temperature window must be precise; hot runner dedicated design.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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