Method of making irrigation conduits
    12.
    发明授权
    Method of making irrigation conduits 失效
    制造灌溉管道的方法

    公开(公告)号:US3989572A

    公开(公告)日:1976-11-02

    申请号:US641145

    申请日:1975-12-15

    申请人: Henry D. Swartz

    发明人: Henry D. Swartz

    IPC分类号: A01G25/06 B32B31/00

    摘要: A method for making irrigation conduits comprises the steps of perforating a first sheet of plastic film by repetitively forming rows of holes in the cross-machine direction, positioning a fabric strip over the holes, positioning a second sheet of plastic film under the first, sealing the fabric strips and the sheets of plastic film together by forming a plurality of fused seals running in the machine direction, and slitting the seals lengthwise to separate the resulting conduits.

    摘要翻译: 一种制造冲洗管道的方法包括以下步骤:通过在横向上重复地形成一排孔来对第一片塑料膜进行穿孔,将织物带定位在孔上方,将第二片塑料膜定位在第一片密封 织物条和塑料膜片通过形成沿机器方向运行的多个熔接密封件,并且纵向切割密封件以分离所得到的管道。