D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
28/26, 117/63
D04H 1/66 (2006.01) A61L 15/42 (2006.01)
Patent
CA 1036875
ABSTRACT OF THE DISCLOSURE A method of manufacturing a dry-formed, adhesively bonded, nonwoven fibrous sheet and the fibrous sheet formed thereby. The method included the steps of forming a low integrity fibrous web by a dry-forming process; temporarily stabilizing the web with substantially brittle bonds for imparting desired properties to the completed sheet resulting from the subsequent processing operations; applying to a surface of the temporarily bonded web a permanent binder which penetrates at least about 10% through the thickness of the web, and which is in a spaced-apart pattern occupying from about 10% to about 60% of the surface area of the web; adhering to a creping surface, by use of the permanent binder, the stress of the web surface on which the permanent binder has been disposed; creping the web from the creping surface to break the brittle, temporary bonds for enhancing the bulk, flexibility, extensibility and porosity of the web; and drying and setting the permanent binder to complete the formation of the fibrous sheet of this invention.
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