04518643 is referenced by 75 patents and cites 24 patents.

A thermoplastic film having a permanently embossed design or geometric shape built therein for controlling the coefficient of friction of sheets of the film when placed adjacent each other. The film has a relatively smooth or female surface on one side and a relatively rough or male surface on the other side. By varying the relationship of one sheet of film placed adjacent another sheet of film or a surface area of the same film, a desired level of coefficient of friction can be obtained. A relatively low coefficient of friction is obtained when two sheets of the film are placed adjacent each other in a female side to female side relationship. A relatively high coefficient of friction is obtained when two sheets are placed adjacent each other in a male side to male side relationship. The film may be perforated or non-perforated and single layer or multi-layer.

Title
Plastic film
Application Number
6/516657
Publication Number
4518643
Application Date
July 25, 1983
Publication Date
May 21, 1985
Inventor
Michael A Francis
Mechanicsville
VA, US
Agent
Paul H Leonard
John F Sieberth
Donald L Johnson
Assignee
Ethyl Corporation
VA, US
IPC
B32B 3/30
B32B 1/00
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