Process for bonding non-woven fibrous sheets and articles made therefrom
    9.
    发明授权
    Process for bonding non-woven fibrous sheets and articles made therefrom 失效
    用于粘合非织造纤维片材和由其制成的制品的方法

    公开(公告)号:US3945873A

    公开(公告)日:1976-03-23

    申请号:US466843

    申请日:1974-05-03

    Inventor: Robert O. Osborn

    Abstract: A process for bonding a first sheet of non-woven plexifilamentary polymeric material to a second sheet of compatible, thermoplastic, polymeric material by applying at least one stream of hot polymeric material to the second sheet of polymeric material to form a narrow continuous bead and after a time sufficient to allow the hot polymeric material of the bead to begin to fuse the first sheet of plexifilamentary polymeric material, simultaneously cooling and deforming the bead so that it permeates the first sheet of plexifilamentary polymeric material and so that its edges extend beyond the region where the polymer has permeated the first sheet of plexifilamentary polymeric material. The hot-melt polymer bonds the two sheets together in the region where it permeates the plexifilamentary material, and forms a continuous bond between the superposed layers. The structure may then be slit through the bead to form a porous tube which is particularly useful as an irrigation tubing.

    Abstract translation: 一种通过将至少一种热的聚合物材料流施加到第二聚合物材料片上而将第一片无纺布的聚合物材料粘合到第二片相容的热塑性聚合物材料上以形成窄的连续珠粒 足以允许珠粒的热聚合物材料开始融合第一片有色玻璃纤维聚合物材料的时间,同时使珠粒冷却和变形,使得其渗透第一片丛状聚合物材料,并使其边缘延伸超过该区域 其中聚合物已渗透到第一片丛状聚合材料。 热熔聚合物将两片粘合在其中渗透丛状材料的区域中,并且在叠加层之间形成连续的结合。 然后可以将该结构穿过珠子切开以形成多孔管,其特别用作冲洗管。

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