Decorated polyester tube package for aqueous compositions
    2.
    发明授权
    Decorated polyester tube package for aqueous compositions 失效
    用于含水组合物的装饰聚酯管包装

    公开(公告)号:US06331331B1

    公开(公告)日:2001-12-18

    申请号:US09302689

    申请日:1999-04-29

    CPC classification number: B05D7/52 B05D2201/02 B65D35/08 C08J7/04 C08J2367/02

    Abstract: Injection stretch blowmolded polyester tubes have been developed for use in packaging water-containing products. Polyester resins have good barrier properties for organic materials but poor moisture barrier properties. It has been found that the moisture barrier properties can be increased by coating the exterior surface of the tube with a first material which adheres to the tube polyester surface and to an overlayer of a moisture barrier comprising polyvinylidene chloride, However, since the overlayer of polyvinylidene chloride can develop a yellow tint, the overlayer in one embodiment is coated with an opaque decorative layer to prevent or mask the gradual yellowing of the polyvinylidene chloride overlayer. In another embodiment where the tube is to be substantially transparent, the product in the tube will have a color that will substantially cancel the yellow tint that is developed by the polyvinylidene chloride overlayer. In a further embodiment the tube is of a color to cancel out the yellow tint color of the polyvinylidene chloride layer. The moisture transmission of the tube wall in any of the embodiments is reduced to less than about 1 gram/m2/day. In a preferred embodiment both the tube wall and the upper tube shoulder have this coating structure to decrease moisture loss from the contained product through both the tube shoulder and the sidewall.

    Abstract translation: 注塑拉伸吹塑聚酯管已被开发用于包装含水产品。 聚酯树脂对有机材料具有良好的阻隔性能,但阻水性能差。 已经发现,可以通过用粘附到管聚酯表面的第一材料和包含聚偏二氯乙烯的防潮层的覆盖层涂覆管的外表面来增加防潮性能。然而,由于聚偏二氟乙烯 氯化物可以形成黄色,在一个实施方案中,覆盖层涂覆有不透明的装饰层,以防止或掩蔽聚偏二氯乙烯覆盖层的逐渐变黄。 在管的基本透明的另一个实施例中,管中的产品将具有基本上抵消由聚偏二氯乙烯覆盖层显影的黄色调的颜色。 在另一个实施例中,管具有抵消聚偏二氯乙烯层的黄色调的颜色。 任何实施例中的管壁的透湿度降低到小于约1克/平方米/天。 在优选实施例中,管壁和上管肩都具有这种涂层结构,以通过管肩和侧壁减少从所含产品的水分损失。

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