| 摘要 |
PURPOSE: A multi-layer safety net is provided to enhance strength and elasticity using a polypropylene material and multi layers and reduce noise by thick and compact twisting of yarn. CONSTITUTION: A multi-layer safety net comprises a net layer and a support layer. The net layer consists of transversely-connected yarn and longitudinally-connected yarn(114). The transversely-connected yarn is formed by parallel arranging of transverse filament yarn(112) and the longitudinally-connect yarn is formed by twisting of first filament yarn(115) and second filament yarn(116). The net layer passes the transversely-connected yarn through the gap between the first and second filament yarn. The support layer is coupled to one side of the net layer and is formed from a synthetic-resin material.
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