Light weight board of improved surface flatness and process for production thereof
    1.
    发明授权
    Light weight board of improved surface flatness and process for production thereof 有权
    具有改善的表面平整度的轻质板及其制造方法

    公开(公告)号:US06759114B2

    公开(公告)日:2004-07-06

    申请号:US10039809

    申请日:2001-10-27

    IPC分类号: B32B320

    摘要: An extruded hollow thermoplastic board, which includes a pair of flat and parallel sheets spaced apart and interconnected by extending ribs, generally has a plurality of depression bands in the areas where the flat sheets and extending ribs are joined. The bands, which negatively affect the surface flatness, are especially apparent for crystalline thermoplastic materials. A hollow thermoplastic board, which effectively reduces the depth of the depression bands by inclusion of locationally fixed gas pockets in the rib area during production, is disclosed in the present invention. The hollow thermoplastic board of the present invention substantially enhances the surface smoothness and is highly beneficial to applications such as printing, lamination and graphic art. The present invention also provides a method for production of the hollow thermoplastic boards of smooth surfaces.

    摘要翻译: 挤出的中空热塑性板,其包括一对间隔开并通过延伸肋相互连接的平的和平行的片,通常在平板和延伸肋连接的区域中具有多个凹陷带。 对结晶热塑性材料来说,对表面平坦度有负面影响的条带尤其明显。 在本发明中公开了一种中空热塑性板,其通过在生产中在肋区域中包括位置固定的气穴来有效地减小凹陷带的深度。 本发明的中空热塑性板基本上提高了表面平滑度,对印刷,层压和图形艺术等应用是非常有益的。 本发明还提供一种制造光滑表面的中空热塑性板的方法。

    Method and apparatus for selectively removing a component from a
multicomponent gas/vapor mixture
    2.
    发明授权
    Method and apparatus for selectively removing a component from a multicomponent gas/vapor mixture 失效
    用于从多组分气体/蒸汽混合物中选择性地除去组分的方法和装置

    公开(公告)号:US5753009A

    公开(公告)日:1998-05-19

    申请号:US645509

    申请日:1996-05-14

    摘要: A device and method for selectively removing one or more components from a multicomponent gas/vapor mixture by membrane fractionation. The membrane fractionation gas removal system preferably comprises: a feed chamber which contains the gas/vapor mixture; at least one porous membrane having a first side which contacts the gas/vapor mixture in the feed chamber, and a second side; at least one nonporous membrane having a first side which contacts the second side of the at least one porous membrane, and a second side, the nonporous membrane having a permeability selective to one or more components; an exit chamber connected to the second side of the at least one nonporous membrane such that the component exiting the nonporous gas enters the exit chamber; and an evacuation member connected to the exit chamber for evacuating one or more components from within the exit chamber. The one or more components are transported through the porous membrane, adsorbed out of the gas/vapor multicomponent gas mixture onto the surface of the porous membrane, through the nonporous membrane, and into the exit chamber. The one or more components preferably condense within the pores of the at least one porous membrane.

    摘要翻译: 一种用于通过膜分级从多组分气体/蒸汽混合物中选择性地除去一种或多种组分的装置和方法。 膜分馏气体去除系统优选包括:包含气体/蒸汽混合物的进料室; 至少一个多孔膜,其具有与进料室中的气体/蒸气混合物接触的第一侧和第二侧; 至少一个无孔膜,其具有接触所述至少一个多孔膜的第二侧的第一侧和第二侧,所述无孔膜具有对一种或多种组分的选择性; 出口室,连接到所述至少一个无孔膜的第二侧,使得离开所述无孔气体的组分进入所述出口室; 以及排出构件,其连接到出口室,用于从出口室排出一个或多个组件。 将一种或多种组分通过多孔膜,通过无孔膜从气体/蒸汽多组分气体混合物吸附到多孔膜的表面上并进入出口室。 一种或多种组分优选在至少一个多孔膜的孔内冷凝。