Plastic bottles and process for preparation thereof
    22.
    发明授权
    Plastic bottles and process for preparation thereof 失效
    塑料瓶及其制备方法

    公开(公告)号:US4486378A

    公开(公告)日:1984-12-04

    申请号:US598543

    申请日:1984-04-12

    摘要: A plastic bottle has as a wall-forming component a layer of a copolymer consisting essentially of 99 to 70% by weight of vinylidene cloride and 1 to 40% by weight of at least one acrylic or methacrylic monomer and further including up to 100 parts by weight of at least one member selected from other ethylenically unsaturated monomers per 100 parts by weight of the total amount of the first two monomers, the copolymer having an oxygen permeability constant of less than 9.times.10.sup.-14 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg as measured at a temperature of 20.degree. C. and a relative humidity of 100% and a water vapor permeability constant of less than 3.times.10.sup.-3 g.multidot.cm/m.sup.2 .multidot.day as determined according to the method of JIS Z-0208.This plastic bottle is obtained by casting an aqueous latex or the like of the above-mentioned copolymer in a bottle mold and drying the cast latex. This aqueous latex may be formed as a coating layer on a preformed plastic bottle. In this plastic bottle, the humidity dependency of the oxygen barrier property is prominently reduced.

    摘要翻译: 塑料瓶具有作为壁形成组分的一层共聚物,其基本上由99至70重量%的亚乙烯基氯化物和1至40重量%的至少一种丙烯酸或甲基丙烯酸单体组成,并且还包括至多100份 选自其它烯属不饱和单体中的至少一种的重量,相对于前两种单体的总量的100重量份,所述共聚物的氧气渗透常数小于9×10-14立方厘米/厘米2·秒·厘米汞柱,其温度为20℃ ℃,相对湿度为100%,水蒸气透过率常数小于3×10-3gxcm / m2×day,根据JIS Z-0208的方法测定。 该塑料瓶通过将上述共聚物的水性胶乳等浇铸在瓶模中并干燥流延胶乳而获得。 该水性胶乳可以形成为预成型塑料瓶上的涂层。 在这种塑料瓶中,阻氧性的湿度依赖性明显降低。