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    • 2. 发明申请
    • Multilayer nonwoven fibrous mats with good hiding properties, laminated and method
    • 多层非织造纤维毡具有良好的遮盖性能,层压和方法
    • US20080108266A1
    • 2008-05-08
    • US12006901
    • 2008-01-07
    • Richard KajanderAlan JaffeePaul SwartzRichard Kindle
    • Richard KajanderAlan JaffeePaul SwartzRichard Kindle
    • D04H13/00B29C45/16
    • D21H27/30D21F11/04Y10T156/10Y10T428/31993Y10T442/608
    • A multilayer fibrous nonwoven mat containing at least one transition zone comprised of a mixture of the slurries used to form the layers on each side of the transition zone, the transition zone having a thickness of at least 1 percent of the thickness of the mat. At least one of the layers contains glass fibers. The multilayer mats are particularly useful as facers on gypsum wall board, insulating foam, a wood material and a broad range of other materials. The multilayer mats are made by a method that involves using a lamella in the forming box on a wet laid mat machine, between slurries, the lamella ending a significant distance prior to a moving forming wire. The transition zone or zones provide superior interlaminar shear strength and other properties compared to multilayer fibrous mats produced on wet laid machines having two or more separate forming boxes.
    • 包含至少一个过渡区的多层纤维非织造垫,所述过渡区由用于在过渡区的每一侧上形成层的浆料的混合物组成,所述过渡区的厚度为垫的厚度的至少1%。 至少一层包含玻璃纤维。 多层垫片特别适用于石膏墙板,绝缘泡沫,木材和广泛的其他材料。 多层垫是通过一种方法制成的,该方法涉及在湿式铺垫机上的成型箱中,在浆料之间使用薄片,薄片在移动的成形网之前结束相当长的距离。 与在具有两个或更多个分离的成型箱的湿式铺设机上生产的多层纤维垫相比,过渡区域或区域提供优异的层间剪切强度和其它性质。