Blow Molding
4 조회수
Uneven wall thickness of PET stretch blow bottles
문제 현상
Uneven wall thickness distribution of injection-stretch-blow molded PET bottles, bottom too thick, shoulder too thin, or left-right inconsistency of the bottle body.
원인 분석
Unreasonable preform design (axial wall thickness distribution mismatched with stretch ratio), stretch rod not concentric, insufficient '2079851475616104457 air pressure.
해결 방법
Optimize preform design, calibrate concentricity of stretch rod and mold, increase '2079851475616104457 pressure to 2.5-4.0MPa, optimize preform heating distribution.
핵심 요약
PET bottle wall thickness uniformity is the synergistic result of preform design, heating control, and '2079851475616104457 parameters.
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