公开(公告)号：WO2018158410A1

公开(公告)日：2018-09-07

申请号：PCT/EP2018/055143

申请日：2018-03-02

Applicant: AUTOLIV DEVELOPMENT AB

Inventor： FINN, Hugh ,  WOOTON, Gary ,  HOLLIES, Andy ,  VALKENBURG, Simon ,  KOEHNEN, Ralf ,  MÜLLER, Kai-Stephan ,  HEIN, Detlef

IPC: D03D1/02 ,  D03D11/02 ,  D03D15/00 ,  D03D49/62

CPC classification number: D03D1/02 ,  D03D11/02 ,  D03D15/0094 ,  D03D49/62

Abstract: There is disclosed a method of producing a woven elongate flexible tube (1) suitable for use in producing an inflatable safety belt (1) The method involving providing a plurality of yarns including at least one weft yarn (8) and a plurality of warp yarns (7), said plurality of warp yarns (7) including at least a first set of warp yarns (7a) and a second set of warp yarns (7b), wherein the warp yarns (7a) of said first set have a higher linear mass density than the warp yarns (7b) of said second set. The method furthermore involves simultaneously weaving a pair of plies (2,3) from said yarns (7, 8) in superimposed relation to one another and such that the plies (2,3) become interwoven and interconnected by a pair of transversely s paced - apart and substantially longitudinally-extending woven seams (4) between which said tube (1) is defined. Each ply (2,3) is woven from at least one said weft yarn (8) and a plurality of said warp yarns (7) drawn from both said first set (7a) and said second set (7b); and the weaving process involves: i) using warp yams drawn solely from said first set (7a) to weave a central tensile load-bearing region (6) of each said ply (2,3), located between said seams (4); and ii) using warp yarns drawn solely from said second set (7b) to weave side regions (5) of each said ply (2,3) located on opposite sides of said tensile load-bearing region (6). A shedding process is used in which warp yarns of the first set (7a) are shed via a first shedding mechanism (25), and warp yarns of the second set (7b) are shed via a second shedding mechanism (26), the second mechanism being a Jacquard mechanism In some embodiments the first shedding mechanism (25) may be a Dobby mechanism.