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    METHOD FOR PRODUCING A MOULDED PART BY STRUCTURAL FOAM MOULDING, MOULDED PART OF AN EXPANDED THERMOPLASTIC MATERIAL AND USES THEREFOR
    1.
    发明申请
    METHOD FOR PRODUCING A MOULDED PART BY STRUCTURAL FOAM MOULDING, MOULDED PART OF AN EXPANDED THERMOPLASTIC MATERIAL AND USES THEREFOR 审中-公开
    通过结构泡沫成型制造成型件的方法，膨胀型热塑性材料的成型部件及其用途

    公开(公告)号：US20160214286A1

    公开(公告)日：2016-07-28

    申请号：US15026439

    申请日：2014-09-29

    申请人： COVESTRO DEUTSCHLAND AG

    发明人： Ulrich GROSSER ,  Jan HELMIG ,  Thorsten SCHULZ ,  Thomas GRIMM ,  Lucia WINKLER

    IPC分类号： B29C44/34 ,  C08J9/04 ,  B29B7/00 ,  B29C44/42 ,  B29C45/77

    CPC分类号： B29C44/355 ,  B29B7/00 ,  B29C44/42 ,  B29C44/60 ,  B29C45/77 ,  B29C2945/76598 ,  B29K2025/06 ,  B29K2067/003 ,  B29K2101/12 ,  B29K2995/0022 ,  B29K2995/0026 ,  C08J9/04 ,  C08J2300/22

    摘要： The invention relates to a method for producing a moulded part (50) by structural foam moulding, in which a polymer melt (18) is provided by melting a thermoplastic material, in which the polymer melt (18) is charged with a foaming agent (22) and in which the polymer melt (18) charged with the foaming agent (22) is injected under pressure into a cavity (26) of a mould (28), and so the polymer melt (18) fills the cavity (26) behind a melt front (34) running through the cavity (26), wherein the rate of injection at which the polymer melt (18) is injected into the cavity (26) of the mould (28) is set such that the internal pressure of the polymer melt (18) in the cavity (26), in a region (40) that follows a portion of the melt front (34) with a time delay of at most 0.15 seconds, is greater than the critical pressure of the foaming agent (22), at least at one point in time during the injection-moulding operation. The invention also relates to a moulded part (50) of an expanded thermoplastic material, wherein the moulded part (50) has a surface region with visual structuring formed by the expanded thermoplastic material of which the average ratio of the degrees of gloss measured in the direction of flow in relation to the degrees of gloss measured transversely to the direction of flow is below 1.9, preferably below 1.5, in particular below 1.2. The invention also relates to uses of such a moulded part.

    摘要翻译： 本发明涉及一种通过结构泡沫成型制造模制件（50）的方法，其中聚合物熔体（18）通过熔化热塑性材料而提供，其中聚合物熔体（18）装有发泡剂（ 22），其中装有发泡剂（22）的聚合物熔体（18）在压力下注入到模具（28）的空腔（26）中，因此聚合物熔体（18）填充空腔（26） 在流过空腔（26）的熔融前沿（34）的后面，其中将聚合物熔体（18）注入模具（28）的空腔（26）中的注入速率设定为使得内部压力 空腔（26）中的聚合物熔体（18）在与熔融物前部（34）的一部分相邻的区域（40）中具有至多0.15秒的时间延迟，大于发泡剂的临界压力 （22），至少在注射成型操作期间的一个时间点。 本发明还涉及一种发泡热塑性材料的模制部件（50），其中模制部件（50）具有由发泡热塑性材料形成的视觉结构的表面区域，其中测量的光泽度的平均比例 相对于横向于流动方向测量的光泽度的流动方向低于1.9，优选低于1.5，特别是低于1.2。 本发明还涉及这种模制部件的用途。

    METHOD FOR PRODUCING A MOULDED PART BY STRUCTURAL FOAM MOULDING, MOULDED PART OF AN EXPANDED THERMOPLASTIC MATERIAL AND USES THEREFOR
    2.
    发明申请
    METHOD FOR PRODUCING A MOULDED PART BY STRUCTURAL FOAM MOULDING, MOULDED PART OF AN EXPANDED THERMOPLASTIC MATERIAL AND USES THEREFOR 有权

    公开(公告)号：US20210023748A1

    公开(公告)日：2021-01-28

    申请号：US17061591

    申请日：2020-10-02

    申请人： Covestro Deutschland AG

    发明人： Ulrich GROSSER ,  Jan HELMIG ,  Thorsten SCHULZ ,  Thomas THULKE ,  Lucia WINKLER

    IPC分类号： B29C44/34 ,  B29C44/42 ,  B29C44/60 ,  B29B7/00 ,  B29C45/77 ,  C08J9/04

    摘要： The invention relates to a method for producing a moulded part (50) by structural foam moulding, in which a polymer melt (18) is provided by melting a thermoplastic material, in which the polymer melt (18) is charged with a foaming agent (22) and in which the polymer melt (18) charged with the foaming agent (22) is injected under pressure into a cavity (26) of a mould (28), and so the polymer melt (18) fills the cavity (26) behind a melt front (34) running through the cavity (26), wherein the rate of injection at which the polymer melt (18) is injected into the cavity (26) of the mould (28) is set such that the internal pressure of the polymer melt (18) in the cavity (26), in a region (40) that follows a portion of the melt front (34) with a time delay of at most 0.15 seconds, is greater than the critical pressure of the foaming agent (22), at least at one point in time during the injection-moulding operation. The invention also relates to a moulded part (50) of an expanded thermoplastic material, wherein the moulded part (50) has a surface region with visual structuring formed by the expanded thermoplastic material of which the average ratio of the degrees of gloss measured in the direction of flow in relation to the degrees of gloss measured transversely to the direction of flow is below 1.9, preferably below 1.5, in particular below 1.2. The invention also relates to uses of such a moulded part.