Extrusion head for producing yarns from a material which has been heated
to form a paste
    4.
    发明授权
    Extrusion head for producing yarns from a material which has been heated to form a paste 失效
    用于从已经被加热以形成糊料的材料生产纱线的挤出头

    公开(公告)号:US5431555A

    公开(公告)日:1995-07-11

    申请号:US30126

    申请日:1993-03-10

    摘要: An extrusion head (14) for producing yarn from a heat-plasticized material, including at least one body (16) defining a chamber (15) for distributing plasticized material over a plate (38) having extrusion openings formed therein. The chamber is supplied by an upper side channel (19) and comprises a downwardly decreasing cross-section of downward flow over at least a portion (24) of the vertical length of the chamber. This decrease is arranged to generate compressive and shear stresses over time in the plasticized material between the side supply channel (19) and the bottom of the chamber (27), said stresses being respectively substantially the same regardless of the path taken by said plasticized material.

    摘要翻译: PCT No.PCT / FR92 / 00849 Sec。 371日期1993年3月10日 102(e)1993年3月10日PCT PCT 1992年9月9日PCT公布。 出版物WO93 / 04840 日本1993年3月18日。一种用于从热塑性材料生产纱线的挤出头(14),包括至少一个限定腔室(15)的主体(16),用于将增塑材料分布在具有挤出开口 在其中形成。 腔室由上侧通道(19)供应,并且包括在腔室的垂直长度的至少一部分(24)上向下流动的向下流动的横截面。 这种减小被布置成在侧面供应通道(19)和腔室(27)的底部之间的增塑材料中随时间产生压缩和剪切应力,所述应力基本上相同,而不管所述塑化材料采取的路径如何 。