Method of manufacturing a dry-formed, adhesively bonded, nonwove

Details Method of manufacturing a dry-formed, adhesively bonded, nonwove Method of manufacturing a dry-formed, adhesively bonded, nonwove

1975-03-13

1977-11-08

Kucia, Richard R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

264118, 264128, 264134, 264283, 428153, B29D 2700

Patent

active

040576698

ABSTRACT:
A method of manufacturing a dry-formed, adhesively bonded, nonwoven fibrous sheet and the fibrous sheet formed thereby. The method includes 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 areas 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.

REFERENCES:
patent: 2545952 (1951-03-01), Goldman
patent: 2865783 (1958-12-01), Henderson
patent: 3295526 (1967-01-01), Sabee
patent: 3485695 (1969-12-01), Ness
patent: 3665921 (1972-05-01), Stumpf
patent: 3879257 (1975-04-01), Gentile et al.
patent: 3903342 (1975-09-01), Roberts

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