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1. 发明授权

US4292271A Methods of applying bonding materials onto fibrous webs 失效
标题翻译：将粘合材料施加到纤维网上的方法
公开(公告)号：US4292271A
公开(公告)日：1981-09-29
申请号：US108022
申请日：1979-12-28
申请人： James F. Buob , Walter L. Pauls
发明人： James F. Buob , Walter L. Pauls
IPC分类号： A47L13/16 , B29J5/00
CPC分类号： D21H5/2664 , D21H25/00 , D21H25/02
摘要： Methods by which a dry-formed loose fibrous web is bonded by applying to one of its surfaces a low add-on level of a relatively high binder solids concentration bonding material to form a once-bonded web, and to the other side of the web, a greater add-on level of a relatively lower solids concentration bonding material, the first-applied emulsion preferably adding from about 20% to about 40% binder solids by weight, and the second-applied adding the rest of the total binder solids to be included in the fibrous web product. The bonding material can be a solution or emulsion. Preferably, the first and second-applied bonding materials are water-based latex emulsions, the solids concentration of the first-applied emulsion is from about 15% to about 25% by weight, that of the second-applied emulsion is from about 10% to about 20% by weight based on the total binder solids to be included in the fibrous web product, and a vacuum draws the second-applied bonding material into the web.
摘要翻译：干法形成的松散纤维网通过向其一个表面施加低附加水平的相对较高的粘合剂固体浓度粘合材料以形成一次结合的纤维网，并且向网的另一侧相对较低的固体浓度粘合材料的附加水平较高，首先施加的乳液优选以重量计约20％至约40％的粘合剂固体添加，并将第二种施加的其余总粘合剂固体添加至被包括在纤维网产品中。接合材料可以是溶液或乳液。优选地，第一和第二施加的粘合材料是水基胶乳乳液，第一次施加的乳液的固体浓度为约15重量％至约25重量％，第二次施用的乳液的固体浓度为约10重量％至基于待包括在纤维网产品中的总粘合剂固体的约20重量％，并且真空将第二施加的粘合材料吸入纤维网中。

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