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    • 7. 发明授权
    • Thermoplastic non-woven fabric seamed by melt-seaming and a method of
making such a fabric
    • 通过熔融缝合缝合的热塑性无纺织物和制造这种织物的方法
    • US4435457A
    • 1984-03-06
    • US417135
    • 1982-09-13
    • Matti ServoMatti Vainio
    • Matti ServoMatti Vainio
    • A41H43/04B29C65/00B29C65/20C09J5/10D04H1/00D06H5/00
    • B29C66/03241B29C65/20B29C66/1122B29C66/1282B29C66/12841B29C66/12881B29C66/14B29C66/43B29C66/72141B29C66/7294B29C66/73715B29C66/73921B29C66/80B29C66/83413C09J5/10D06H5/00B29C66/71B29K2105/04B29K2105/0854Y10T428/192Y10T428/195Y10T428/24777
    • A seamed non-woven fabric consisting of at least two thermoplastic non-woven fabric strips (1, 2) positioned side by side in the same plane, said strips of fabric being joined together at their opposite longitudinal edges by means of a melt seam. The edges of the strips to be joined together have been melt-shrunk into such a thickness that the thickness of the seam (4) formed by the joined edge portions (1b, 2b) of the strips does not exceed the thickness of the other portions of the strips. The strips of fabric are, at least at the edges to be joined together, provided with reinforcement yarns (3) parallel to said edges, the melting point of said yarns being higher than the melting temperature used during the melt-seaming. The reinforcement yarns provide in the seam a high strength in the longitudinal direction in spite of the melting of the edge portions of the strips. In the method of making such a non-woven fabric the edge portions of the strips of fabric are heated to a melting temperature, which is higher than the melting point of the fibrous material of the strips of fabric but lower than the melting point of the reinforcement yarns, whereupon the melt-shrunk edges of the strips are pressed together to make a seam having the same thickness as the other portions of the strips.
    • PCT No.PCT / FI82 / 00001 Sec。 371日期1982年9月13日 102(e)1982年9月13日PCT PCT卷号1982年1月6日PCT公布。 出版物WO82 / 02412 日本1982年7月22日。一种由至少两个热塑性无纺布条(1,2)组成的缝合无纺织物,所述热塑性无纺布条带(1,2)在同一平面内并排放置,所述织物条在其相对的纵向边缘 通过熔体接缝。 要连接在一起的条带的边缘已经被熔融收缩成这样的厚度,使得由条的接合边缘部分(1b,2b)形成的接缝(4)的厚度不超过其它部分的厚度 的条。 织物条至少在要连接在一起的边缘处设有平行于所述边缘的加强纱线(3),所述纱线的熔点高于在熔融接缝期间使用的熔化温度。 尽管钢带的边缘部分熔化,但是加强纱线在纵向方向上提供了高的强度。 在制造这种无纺织物的方法中,织物条带的边缘部分被加热到高于织物条的纤维材料的熔点但低于织物条的熔点的熔融温度 加强纱线,然后将条的熔融收缩边缘压在一起,以形成具有与条的其它部分相同厚度的接缝。