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    Polyester vessel and package
    2.
    发明授权
    Polyester vessel and package 失效
    聚酯容器和包装

    公开(公告)号：US4820795A

    公开(公告)日：1989-04-11

    申请号：US128948

    申请日：1987-12-04

    申请人： Sadao Hirata ,  Yoshihiko Watanabe

    发明人： Sadao Hirata ,  Yoshihiko Watanabe

    IPC分类号： B65D1/00 ,  B29C49/02 ,  B65D1/02 ,  C08G63/18 ,  C08G63/181 ,  C08G63/85 ,  C08J5/00 ,  C08L67/02 ,  C08G63/02

    CPC分类号： C08G63/85 ,  B65D1/0207 ,  C08L67/02 ,  B29B2911/14906 ,  B29B2911/14933 ,  B29B2911/1494 ,  B29B2911/1498 ,  B29C49/02 ,  B29K2067/00

    摘要： Disclosed is a polyester vessel having mouth, side wall and bottom portions formed of a polyester composed mainly of ethylene terephthalate units, wherein the thermoplastic polyester is a polyester containing a catalyst residue in an amount smaller than 1000 ppm as the metal, and in the thermoplastic polyester constituting the bottom portion of the vessel, the ratio of the thermal crystallization degree represented by the following formula:100.times.(Q.sub.DC -Q.sub.AC)/Q.sub.DC (1)wherein Q.sub.AC stands for the heat quantity of crystallization at elevation of the temperature and Q.sub.DC stands for the heat quantity of crystallization at lowering of the temperature, is lower than 90%.

    摘要翻译： 公开了一种聚酯容器，其具有由主要由对苯二甲酸乙二酯单元组成的聚酯形成的口部，侧壁和底部，其中热塑性聚酯是含有作为金属的小于1000ppm的催化剂残余物的聚酯，并且在热塑性塑料 构成容器底部的聚酯，由下式表示的热结晶度的比例：100×（QDC-QAC）/ QDC（1）其中QAC表示温度升高时的结晶热量和QDC 对于降低温度时的结晶热量，低于90％。

    PREFORM FOR PLASTIC CONTAINER WITH THIN BOTTOM
    3.
    发明申请
    PREFORM FOR PLASTIC CONTAINER WITH THIN BOTTOM 审中-公开
    具有薄底的塑料容器的预制

    公开(公告)号：US20160229087A1

    公开(公告)日：2016-08-11

    申请号：US15021520

    申请日：2014-09-15

    申请人： S.I.P.A. SOCIETÀ INDUSTRIALIZZAZIONE PROGETTAZIONE E AUTOMAZIONE S.P.A.

    发明人： David GAIOTTI ,  Laurent SIGLER ,  Dino Enrico ZANETTE ,  Matteo ZOPPAS

    IPC分类号： B29B11/14

    CPC分类号： B29B11/14 ,  B29B11/08 ,  B29B11/12 ,  B29B2911/14013 ,  B29B2911/14326 ,  B29B2911/14332 ,  B29B2911/14633 ,  B29B2911/1464 ,  B29B2911/14933 ,  B29C49/02 ,  B29C49/06 ,  B29C2049/028 ,  B29K2067/003 ,  B29L2031/712 ,  B29L2031/7158

    摘要： The invention relates to a new PET preform design that enables a more precise distribution of material in the bottle bottom and avoids the waste of material around the injection point. The thickness BWTmin of the wall at the center of the gate or tip (3) (injection point) is reduced to a minimum in order to avoid the waste of material around the injection point when the preform is blown. This is particular important for carbonated soft drink application since the reduced amount of amorphous material at the center of the gate (3) helps to reduce the risk of stress cracking on the bottle base. Furthermore a step (4) having thickness WTmax in the body wall thickness, in the region of the periphery of the base with WTmax>WT, allows enough material to be available for the proper blowing of the bottle bottom making the bottle more stable.

    摘要翻译： 本发明涉及一种新的PET预制件设计，其能够更精确地分配瓶子底部的材料并避免在注射点周围的材料的浪费。 在浇口或尖端（3）（注入点）中心处的壁的厚度BWTmin减小到最小，以避免在预成型件吹塑时在注射点周围的材料的浪费。 这对于碳酸软饮料尤其重要，因为在浇口（3）中心的非晶材料量减少有助于降低瓶底上的应力开裂的风险。 此外，具有体壁厚度WTmax的步骤（4）在具有WTmax> WT的基底周边区域中允许足够的材料可用于适当地吹动瓶底，从而使瓶更加稳定。