Buried pipe laying method
    1.
    发明授权
    Buried pipe laying method 失效
    埋管铺设方法

    公开(公告)号:US5676491A

    公开(公告)日:1997-10-14

    申请号:US600765

    申请日:1996-02-13

    CPC分类号: E21D9/005 E21D11/15 F16L1/036

    摘要: A buried pipe laying method of additionally coupling a new pipe with the extreme end of a buried pipe laid underground involves flatly deforming a cylindrical pipe having a pipe length smaller than the inside diameter of the buried pipe, conveying the deformed cylindrical pipe to the extreme end of the buried pipe laid underground through the interior thereof, and then returning the deformed shape of the cylindrical pipe to its original circular shape and coupling it with the extreme end of the buried pipe.

    摘要翻译: 另外将新管与埋地埋管的末端连接的埋管敷设方法使管长小于埋管的内径的圆筒管扁平变形,将变形的圆柱管输送到最终端 通过其内部铺设在地下的埋管,然后将圆柱形管的变形形状恢复到原来的圆形,并将其与埋管的最末端连接。

    Removable pressure-sensitive adhesive and adhesive sheet of the same
    2.
    发明授权
    Removable pressure-sensitive adhesive and adhesive sheet of the same 有权
    可拆卸的压敏粘合剂和粘合片

    公开(公告)号:US06869678B2

    公开(公告)日:2005-03-22

    申请号:US10314949

    申请日:2002-12-10

    摘要: A removable pressure-sensitive adhesive which, even when applied to metal sheets or to metallic members which have undergone a coating treatment, is inhibited from increasing in adhesive force with the lapse of time and can be easily removed therefrom and which has satisfactory weatherability and satisfactory pot life contains 100 parts by weight on a solid basis of an aqueous dispersion type acrylic copolymer obtained by polymerizing a monomer mixture in an aqueous medium in the presence of a nonionic surfactant and/or an anionic surfactant each having an ethylenic double bond and 0.1 to 3 parts by weight of a hindered-amine light stabilizer having a piperidine ring in which the nitrogen atom has a tertiary amine structure; and an adhesive sheet is produced with the adhesive.

    摘要翻译: 即使施加到金属片或经过涂布处理的金属构件上的可除去的压敏粘合剂也随着时间的流逝而被抑制在粘合力的增加,并且能够容易地从其中除去并具有令人满意的耐候性和令人满意的 适用期包含100重量份的固含量的水分散型丙烯酸共聚物,该水分散型丙烯酸共聚物是通过在非离子表面活性剂和/或各自具有烯属双键的阴离子表面活性剂和0.1至 3重量份具有氮原子具有叔胺结构的哌啶环的受阻胺光稳定剂; 并用粘合剂制造粘合片。