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    • 13. 发明申请
    • MANUFACTURING METHOD FOR POLYETHYLENE-TEREPHTALATE CONTAINERS WITH OUT-OF-CENTRE MOUTH
    • 具有中心线以外的聚乙烯 - 热收缩容器的制造方法
    • WO2002062549A2
    • 2002-08-15
    • PCT/EP2002/000834
    • 2002-01-26
    • SIPA S.P.A.FIBBIA, MauroARMELLIN, Alberto
    • FIBBIA, MauroARMELLIN, Alberto
    • B29C
    • B29C49/70B29C49/12B29C49/6436B29C2049/702
    • Method for manufacturing plastic bottles, including the step in which respective preforms are removed from the respective moulds, and the step in which said preforms are transferred into temperature conditioning stations for a predetermined period of time, during which said preforms are caused to undergo an asymmetrical heat treatment that is effective in heating in a different manner a preform sector having an angular spread of a definite value that is anyway not less than 180°. The method includes the step in which said surface sector of the preform is heated up with the help of heating means that are partially arranged in a crown-like manner around the respective preform. The blow-moulding process comprises the sub-steps in which: the stretching rod is inserted into the preform up to the point in which it almost comes into contact with the bottom thereof; a stretching counter-rod is approached from the outside of the preform up to the point in which it almost comes into contact with the bottom of the preform; the preform undergoes blow-moulding while, at the same time, said stretching rod moves further forward into the preform and, by in this way pressing against the bottom of the preform, pushes the stretching counter-rod in a direction of ejection from the blow-moulding cavity.
    • 制造塑料瓶的方法,包括从相应的模具中取出相应的预成型件的步骤,以及将预成型件转移到温度调节站预定时间段的步骤,在此期间使所述预成型件经历不对称的 热处理以不同的方式有效地加热具有无论如何不小于180°的确定值的角度扩展的预制件部分。 该方法包括以下步骤:借助加热装置将预成型件的所述表面部分加热,所述加热装置围绕相应的预成型件以冠状方式部分地布置。 吹塑工艺包括以下子步骤:拉伸杆插入预成型件直到其几乎与其底部接触的点; 拉伸反向杆从预成型件的外部接近直到其几乎与预成型件的底部接触的点; 预成型件进行吹塑,同时所述拉伸杆进一步向前移动到预成型件中,并且通过这种方式压靠预成型件的底部,将拉伸反向杆从吹塑的方向推动 成型腔。