Process for finishing a nonwoven film-fibril sheet

Details Process for finishing a nonwoven film-fibril sheet Process for finishing a nonwoven film-fibril sheet

1976-08-23

1978-01-17

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156209, 156306, B32B 2700

Patent

active

040690784

ABSTRACT:
There is disclosed a finishing process for preparing a bonded, nonwoven, polyethylene, film-fibril sheet having high delamination strength and uniformity of appearance comprising selecting a particular starting sheet which is lightly consolidated, embossing the lightly consolidated sheet in a particular manner, passing the resulting sheet, under restraint, through a heating zone to cause a specified amount of fusion of surface film-fibrils, and heat treating the other surface of the sheet similarly to obtain a bonded sheet having a specified opacity.

REFERENCES:
patent: 3169899 (1965-02-01), Steuber
patent: 3442740 (1969-05-01), David
patent: 3478141 (1969-11-01), Dempsey et al.
patent: 3536552 (1970-10-01), Lee
patent: 3715251 (1973-02-01), Prentice

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