POLYESTER CONTAINERS
    3.
    发明公开
    POLYESTER CONTAINERS 审中-公开
    POLYESTERBEHÄLTER

    公开(公告)号:EP1590162A2

    公开(公告)日:2005-11-02

    申请号:EP03814732.8

    申请日:2003-12-12

    IPC分类号: B29C49/52

    摘要: A polyester container, such as a polyethylene terephthalate container produced by blowmolding can be given a modified exterior surface, such as a frosted appearance, by being blowmolded in a mold that has an irregular, pitted surface, the mold being at a temperature of at least about 40 °C above the glass transition temperature of the polyester resin. At this temperature of the mold the polyester resin will flow into the irregularities of the mold and produce a frosted appearance to the exterior surface of the container. One technique to give the mold an irregular, pitted surface is to grit-blast the interior of the mold that is to have the frosted appearance. Other modifications other than a frosted appearance can be imparted to the surface of a container. These include recesses, projections and serrations.