Method of fabricating a plastic pipe fitting
    3.
    发明授权
    Method of fabricating a plastic pipe fitting 失效
    制造塑料管件的方法

    公开(公告)号:US3873391A

    公开(公告)日:1975-03-25

    申请号:US27308872

    申请日:1972-07-19

    申请人: JOHNS MANVILLE

    摘要: A method of fabricating a section of pipe fitting from a plurality of subsections and particularly a method of fabricating a non-linear plastic pipe fitting such as, for example, a tee fitting, wye fitting or the like is disclosed herein. The method includes forming predesigned complementary mitered edges in a plurality of plastic pipe subsections so that when the mitered edges engage one another in a complementary fashion, the subsections together take the shape of the desired fitting. The mitered edges are at least temporarily secured into engagement with one another by means of, for example, cement. Thereafter, a liquid mixture coating of elastomer resins such as polyurethane elastomer is applied, preferably by means of spray, to the external surfaces of the pipe subsections at the engaging mitered edges and allowed to set or cure to a tough but slightly resilient coating or band. In this manner, a more uniform coating or band can be readily applied to non-linear, irregular surfaces such as those defined by non-linear fittings.

    摘要翻译: 本文公开了一种从多个子部分制造管件的一部分的方法,特别是制造非线性塑料管件的方法,例如三通配件,叶片配件等。 该方法包括在多个塑料管子部分中形成预先设计的互补倾斜边缘,使得当倾斜边缘以互补的方式彼此接合时,子部分一起采用期望的配件的形状。 倾斜边缘至少通过例如水泥将其临时固定成彼此接合。 此后,优选通过喷雾将诸如聚氨酯弹性体的弹性体树脂的液体混合物涂层施加到接合斜边处的管子部分的外表面,并使其固化或固化成坚韧但稍微弹性的涂层或带 。 以这种方式,更均匀的涂层或带可以容易地施加到非线性不规则表面,例如由非线性配件限定的表面。