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    • 5. 发明授权
    • Heat-set chamber redesign for uniform heat setting of carpet yarns
    • 热定型室重新设计用于地毯纱线的均匀热定形
    • US4754619A
    • 1988-07-05
    • US908462
    • 1986-09-17
    • Kenneth H. Keith
    • Kenneth H. Keith
    • D02J13/00D06B3/04D06B5/06
    • D02J13/001D02J13/006D06B3/045
    • In conjunction with a heat-set apparatus for carpet yarns which incorporates a plenum chamber having a porous upper surface in combination with a forced draft system for recirculating the heating medium throughout the length of the heat-set chamber, an improved design of the plenum chamber and the distribution of the medium to compensate for a temperature gradient which has heretofore existed in the heat-set chamber resulting from the introduction of cooled yarn into the chamber. Such temperature gradient has been the cause of dye streaking which occurs when the yarn is subjected to relatively cooler temperature adjacent to the entrance to the heat-set chamber when the machine is stopped.
    • 结合用于地毯纱线的热定型设备,其包括具有多孔上表面的增压室以及用于在加热室的整个长度内再循环加热介质的强制通风系统,增压室的改进设计 以及介质的分布,以补偿由于将冷却的纱线引入到室中而在热定形室中存在的温度梯度。 这种温度梯度已经成为染色条纹的原因,当机器停止时,纱线经受与热定型室入口相邻的相对较冷的温度。