The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1978
Filed:
Jun. 18, 1975
Ronald Lloyd, Sawbridgeworth, EN;
Abstract
A melt-embossed polymer film is provided on one surface with a set of parallel grooves and on the other surface with a second set of parallel grooves at an angle to the first, the combined tapes of the grooves being at least substantially equal to the thickness of the film. The ratio between the intersection area common to two ribs on different surfaces and the cross-sectional area of each rib is low, e.g. not greater than 2:1 to ensure transmission of orientation on subsequent stretching. The ribs between the grooves may be square, trapezoidal (provided that the included angle of the tapering sides is not greater than 45.degree.) or wider at its outer part than at its inner part. Ribs of these shapes, especially the last named, can be produced by using deformable, e.g. rubber, profiling means.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile