| 摘要 |
PURPOSE:The titled apron for suppressing occurrence of cracking on the surface rubber layer, preventing damage of the apron and occurrence of draft unevenness, obtained by bonding the surface rubber layer to the back rubber layer in a specific thickness ratio of both the layers. CONSTITUTION:The surface rubber layer 18 and the back rubber layer 19 are set in a thickness ratio of both the layers of (3:7)-(1:9), and bonded through the core cord 17 such as cotton yarn, etc., to give an apron of draft device for preventing damage of the apron and occurrence of draft unevenness. USE:An apron of draft device in a high-speed spinning frame of the air type.
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