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    Means and method for producing plastic netting
    6.
    发明授权
    Means and method for producing plastic netting 失效
    生产塑料网的方法和方法

    公开(公告)号：US3959057A

    公开(公告)日：1976-05-25

    申请号：US565691

    申请日：1975-04-07

    申请人： Jesse J. Smith

    发明人： Jesse J. Smith

    IPC分类号： B29C48/30 ,  B29B5/04

    CPC分类号： B29C47/0033 ,  B29C47/24 ,  B29C47/30 ,  B29C47/0014 ,  B29L2028/00

    摘要： A means and method for producing plastic netting wherein a hot pneumatic fluid such as nitrogen is used to blow filaments of one circular row of plastic filaments into contact with another circular row of plastic filaments which rows are concentric with each other and being rotated in opposite directions by a respective pair of counter-rotating dies. The hot pneumatic fluid is preferably an inert gas such as nitrogen and serves to anneal the plastic at the weld intersections of the filaments as well as to prevent oxidation during the period when the filaments are quite hot. The means disclosed herein comprises a pair of concentric relatively rotatable dies each having a circular row of plastic extrusion orifices, the dies being adapted to rotate in opposite directions and the rows of orifices being in close proximity to each other and means for projecting hot pneumatic fluid is carried by one of the dies and the hot pneumatic fluid is directed to filaments extruded from a circular row of orifices of the same die which carries the means for projecting the hot pneumatic fluid toward the extruded plastic filaments. Additionally, the individual plastic extrusion orifices are generally aligned axially with individual jet openings through which the hot pneumatic fluid is directed laterally against the filaments of one of said circular rows so that such filaments are blown into weld contact with the plastic filaments extruded from the other circular row of extrusion orifices carried by the other die.

    摘要翻译： 一种用于生产塑料网的方法和方法，其中使用诸如氮气的热气动流体来吹塑一根圆形的塑料丝的长丝与另一个圆形排的塑料细丝接触，这些列彼此同心并以相反方向旋转 通过相应的一对反向旋转模具。 热气动流体优选为惰性气体如氮气，用于在长丝的焊接交叉处对塑料进行退火以及在长丝相当热的时期期间防止氧化。 本文公开的装置包括一对同心相对旋转的模具，每个模具均具有圆形排的塑料挤出孔，该模具适于沿相反方向旋转，并且该排排彼此紧邻，并且用于将热气动流体 由一个模具承载，并且热气动流体被引导到从相同模具的圆形排的孔排出的细丝，其携带用于将热气动流体投射到挤出的塑料细丝的装置。 另外，单个塑料挤出孔通常与各个喷射开口轴向对准，热气动流体通过该喷射开口横向对着所述圆形排中的一个的长丝定向，使得这种细丝被吹塑成与从另一个挤出的塑料细丝焊接接触 另一个模具承载的圆形排挤压孔。