In situ precipitated fibrous laminate and method of producing sa

Details In situ precipitated fibrous laminate and method of producing sa In situ precipitated fibrous laminate and method of producing sa

1983-05-02

1984-03-13

Dixon, Jr., William R.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156187, 156229, 15624413, 264173, 428109, B65H 8100, B32B 3100, B29C 1900

Patent

active

044365683

ABSTRACT:
Multi-layer fibrous sheet laminate having layers with criss-crossing predominate grain directions, each layer being a three-dimensional reticulate structure of polymer fibers precipitated in situ from a polymer solution in a solvent or swelling agent therefor. The layers are produced by extrusion from a slot onto a collecting surface moving away from the slot to impart the predominate grain direction thereto and the laminate can be produced in a single extrusion operation utilizing two sequentially arranged circular extrusion slots with a common tubular collecting surface while rotating such extrusion slots in different relative directions.

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Rieche, "Outline of Industrial Organic Chemistry", 3rd Ed., Chemical Publishing Co. Inc., 1970, p. 361-363.

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