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    • 2. 发明公开
    • 2축 연신 블로우 성형 병 제조 방법
    • 双向吹塑成型瓶制作方法
    • KR1020020054044A
    • 2002-07-06
    • KR1020000082649
    • 2000-12-27
    • 롯데케미칼 주식회사
    • 박상현정수윤김세훈황윤만박양준
    • B29C49/08
    • B29C49/12B29B11/08B29C49/06B29C49/4252B29C49/66B29C2049/6661B29K2067/003B29L2031/712
    • PURPOSE: A method for fabricating biaxially stretched blow molding bottle is provided to prevent the crack, crazing and burst caused by the stress concentration and high internal pressure by remarkably reducing the stress. CONSTITUTION: A thermoplastic resin is melted and kneaded so as to fabricate a preform by injection-molding the melted and kneaded thermoplastic resin. The preform is subject to a biaxially stretched blow molding process so that a bottle is formed. Then, the bottle is suddenly cooled such that the temperature around a center point of a bottom of the bottle is in the range of 50°C to the transition temperature of glass. When the temperature of the bottle is below the transition temperature of glass, the shrinkage of the bottle is prevented because of residual heat when the bottle is cooled at the temperature above the transition temperature of glass. The cooling temperature is in the range of 50 to 70°C.
    • 目的:提供一种制造双轴拉伸吹塑瓶的方法,通过显着降低应力来防止应力集中和高内压引起的裂纹,裂纹和爆裂。 构成:将热塑性树脂熔融并捏合,以便通过注射模塑熔融和捏合的热塑性树脂来制造预成型体。 将预成型体进行双轴拉伸吹塑成型,形成瓶子。 然后,将瓶子突然冷却,使得瓶子底部的中心点周围的温度在50℃至玻璃化转变温度的范围内。 当瓶子的温度低于玻璃的转变温度时,当瓶子在高于玻璃转变温度的温度下冷却时,由于残余热量可以防止瓶子的收缩。 冷却温度在50〜70℃的范围内。