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    PROCESS FOR FORMING MULTI-LAYER MOLDED ARTICLES
    21.
    发明申请
    PROCESS FOR FORMING MULTI-LAYER MOLDED ARTICLES 有权
    形成多层成型制品的方法

    公开(公告)号：US20090224421A1

    公开(公告)日：2009-09-10

    申请号：US12294137

    申请日：2007-04-04

    申请人： Gregory S. O'Brien ,  Bruce Clay ,  Ronald Patridge

    发明人： Gregory S. O'Brien ,  Bruce Clay ,  Ronald Patridge

    IPC分类号： B28B1/20 ,  C08L77/00 ,  C08L51/08 ,  C08L27/16 ,  B32B1/00 ,  B32B27/08

    CPC分类号： B29C41/04 ,  B29C41/20 ,  B29C41/22 ,  B29C41/46 ,  B32B3/04 ,  B32B7/06 ,  B32B27/08 ,  B32B27/285 ,  B32B27/304 ,  B32B27/32 ,  B32B27/327 ,  B32B27/34 ,  B32B2270/00 ,  B32B2274/00 ,  Y10T428/1352

    摘要： The invention relates to a rotomolding process for forming a multi-layer article of two different polymers with different melting points in which an outer layer polymer powder is added to a rotational molder along with an inner layer polymer powder that is separated from the outer layer powder by a release film. The release film has a particular melting point that is greater than that of the outer layer polymer and preferably between the melting points of the inside layer and outside layer polymers. In one embodiment, the release layer forms an enclosure or bag in which the inner layer (higher melting point) powder is enclosed. In another embodiment the release film forms a barrier between an insulated cavity and the mold. The process provides a means for a “one-shot” rotomolding method.

    摘要翻译： 本发明涉及一种用于形成具有不同熔点的两种不同聚合物的多层制品的滚塑工艺，其中外层聚合物粉末与从外层粉末分离的内层聚合物粉末一起加入到旋转模塑机中 通过释放膜。 剥离膜具有比外层聚合物更高的特定熔点，优选在内层和外层聚合物的熔点之间。 在一个实施方案中，释放层形成其中封闭内层（较高熔点）粉末的外壳或袋。 在另一个实施例中，释放膜在绝缘腔和模具之间形成屏障。 该过程提供了“单次”滚塑法的手段。

    Fluid transfer multi-layer tube based on a polyamide and an ethyl vinyl alcohol or polyvinyl alcohol
    24.
    发明授权
    Fluid transfer multi-layer tube based on a polyamide and an ethyl vinyl alcohol or polyvinyl alcohol 有权
    基于聚酰胺和乙基乙烯醇或聚乙烯醇的流体转移多层管

    公开(公告)号：US08309193B2

    公开(公告)日：2012-11-13

    申请号：US12513257

    申请日：2007-10-24

    申请人： Mehdi M. Emad ,  Franck Bertoux ,  Gregory S. O'Brien

    发明人： Mehdi M. Emad ,  Franck Bertoux ,  Gregory S. O'Brien

    IPC分类号： B32B1/08

    CPC分类号： B32B27/08 ,  B32B1/08 ,  B32B27/30 ,  B32B27/34 ,  F16L2011/047 ,  Y10T428/1393

    摘要： The present invention relates to a symmetrical multi-layer tube based on polyamide and ethyl vinyl alcohol (EVOH) or polyvinyl alcohol (PVOH) for transferring fluids. As examples of tubes for transferring fluids, mention may be made of fuel (gasoline, diesel fuel) pipes, in particular for carrying fuel from the tank to the engine of motor vehicles. Other examples of fluid transfer include, but are not limited to, the fluids used in fuel cells, CO2 systems for cooling, hydraulic systems, cooling circuits and air-conditioning circuits, and medium-pressure power transfer.

    摘要翻译： 本发明涉及一种基于用于转移流体的聚酰胺和乙基乙烯醇（EVOH）或聚乙烯醇（PVOH）的对称多层管。 作为用于输送流体的管的实例，可以提及燃料（汽油，柴油）管道，特别是用于将燃料从罐运送到机动车的发动机。 流体转移的其它实例包括但不限于用于燃料电池的流体，用于冷却的CO 2系统，液压系统，冷却回路和空调回路以及中压动力传递。