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    • 38. 发明授权
    • CELLULOSIC WEB WITH A PERMEANT BARRIER OR CONTAMINANT TRAP
    • 具有隔离层或污染物陷阱的纤维素网
    • EP1094940B1
    • 2002-11-06
    • EP99917438.6
    • 1999-04-13
    • Cellresin Technologies, LLC
    • WOOD, Willard, E.BEAVERSON, Neil, J.
    • B32B23/08D21H19/84
    • C08L1/00B01D69/141B01D71/08B32B27/08B65D1/0207C08J5/18C08L67/02C08L97/02C08L101/00Y10T442/2057Y10T442/2066Y10T442/209Y10T442/2508C08L2666/02C08L2666/26
    • Nonwoven cellulosic fiber webs including, paperboards and corrugated paperboard, etc., are described containing a barrier layer (250) that can act both as a barrier to the passage of a permeant and as a trap for contaminant materials that can arise in new materials or from the recycle of fiber in the manufacture of paperboard. The effective material which acts as a trap or barrier is a cyclodextrin compound, substantially free of an inclusion complex compound. The cyclodextrin barrier layer (250) can be corrugated or sheet laminated with or on the cellulosic web (240). Alternatively, the cyclodextrin material can be included in a coating composition that is coated (210) on the surface or both surfaces of the cellulosic web (240) after web formation. Further, the cyclodextrin material can be included in a thermoplastic film that can be used as one layer in a bilayer or multilayer laminate containing a cellulosic web (240).
    • 描述了非织造纤维素纤维网,包括纸板和瓦楞纸板等,其包含阻挡层(250),该阻挡层既可以用作渗透剂通过的屏障又可以用作新材料中可能产生的污染物材料的捕集器或 从纸板生产中的纤维回收。 充当陷阱或屏障的有效物质是环糊精化合物,基本上不含包合配合物。 环糊精阻挡层(250)可以与纤维素网(240)或在纤维素网(240)上层压成波纹状或片状。 或者,环糊精材料可以包含在涂层组合物中,所述涂层组合物在卷材形成之后涂覆(210)在纤维素卷材(240)的表面或两个表面上。 此外,环糊精材料可包含在可用作包含纤维素网(240)的双层或多层层压体中的一层的热塑性膜中。