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    • 6. 发明授权
    • Blowing agent introduction systems and methods
    • 发泡剂介绍系统和方法
    • US09108350B2
    • 2015-08-18
    • US13427469
    • 2012-03-22
    • Roland Y. Kim
    • Roland Y. Kim
    • B29C47/92B29C44/34
    • B29C44/3446B29C44/3449B29C44/3453B29C47/92B29C2947/92019B29C2947/92209B29C2947/924B29C2947/92514B29C2947/92571B29C2947/92657B29C2947/92704B29C2947/92828B29C2947/92885B29C2947/92895Y10T137/7762
    • The present invention provides blowing agent introduction systems and methods for introducing blowing agent into polymeric foam processing systems. The methods may involve introducing one or more doses of blowing agent into polymeric material in an extruder during a plastication period of a molding cycle. Prior to introduction, a dose is confined in an accumulator which, for example, has a volume defined between an inlet valve and an outlet valve. A control system may receive inputs related to system parameters (e.g., pressure of polymeric material in extruder, axial position of screw in barrel, whether screw is rotating, and the like) and based on the inputs coordinates operation of the valves to confine and introduce the blowing agent dose(s). The introduction systems may be used in discontinuous plasticating processes, such as injection molding and blow molding, and can be particularly useful in processes that use precise quantities of blowing agent.
    • 本发明提供了将发泡剂引入聚合物泡沫处理系统中的发泡剂引入体系和方法。 该方法可以包括在成型周期的增塑期间将一个或多个剂量的发泡剂引入挤出机的聚合材料中。 在引入之前,剂量被限制在例如具有限定在入口阀和出口阀之间的体积的蓄液器中。 控制系统可以接收与系统参数相关的输入(例如,挤出机中的聚合物材料的压力,螺杆在筒中的轴向位置,螺杆是否旋转等),并且基于输入坐标来限制和引入阀的操作 发泡剂剂量。 引入系统可以用于不连续塑化过程中,例如注射成型和吹塑成型,并且可以在使用精确量的发泡剂的方法中特别有用。
    • 10. 发明授权
    • Roll fed flotation/impingement air ovens and related thermoforming systems for corrugation-free heating and expanding of gas impregnated thermoplastic webs
    • 辊式浮选/冲击空气炉和相关的热成型系统,用于无波纹加热和膨胀气体浸渍的热塑性网
    • US08568125B2
    • 2013-10-29
    • US12423790
    • 2009-04-14
    • Gregory BranchKrishna Nadelia
    • Gregory BranchKrishna Nadelia
    • B29C44/46B29C65/10
    • B29C44/3453B29C44/20B29C44/3446B29C51/082B29K2067/00B29K2067/003B29K2105/04B29K2105/041
    • Disclosed herein are roll fed air heated flotation ovens and related thermoforming systems, assemblies, and machines that enable the corrugation-free expansion of a gas impregnated thermoplastic web passing through an oven chamber (without use of a pin-chain assembly), as well as to related methods. In an embodiment, a gas impregnated thermoplastic web is conveyed and expanded through an elongated air heated oven chamber, wherein the elongated oven chamber includes a plurality of downwardly directed heated air nozzles positioned at regular intervals along and within the upper portion of the oven chamber, and a plurality of upwardly directed heated air nozzles positioned at regular intervals along and within the lower portion of the oven chamber, but staggered apart from the downwardly directed heated air nozzles such that the gas impregnated thermoplastic material web undulates in an up and down wavelike fashion, thereby minimizing sagging, bagging, puckering, and/or buckling of the web.
    • 本文公开了辊式进料空气加热的浮选炉和相关的热成型系统,组件和机器,其能够使通过烘箱室(不使用销链组件)的气体浸渍的热塑性网的无波纹膨胀以及 到相关方法。 在一个实施例中,气体浸渍的热塑性纤维网通过细长的空气加热的烘箱室被输送和膨胀,其中细长的烘箱室包括多个向下定向的加热的空气喷嘴,其沿着烤箱室的上部并且位于恒温室内, 以及多个向上定向的加热的空气喷嘴,其沿着炉室的下部分内部和内部以规则的间隔设置,但是与向下指向的加热的空气喷嘴分开交错,使得气体浸渍的热塑性材料卷材以上下波浪形式起伏 从而最小化卷筒纸的下垂,装袋,褶皱和/或弯曲。