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:
Dec. 13, 1994
Filed:
Apr. 08, 1992
Hak-Rhim Han, St. Paul, MN (US);
Minnesota Mining and Manufacturing, St. Paul, MN (US);
Abstract
A reinforced sheet material suitable for making innerseals and sealing membranes for containers. The sheet material comprises a layer of sealing material for bonding the sheet to a container, a layer of material substantially impermeable to air and moisture, and a reinforcing layer comprising at least two plies of monoaxially oriented film combined in lamination with the strong direction of at least one ply crossing the weak direction of another ply. Tabbed innerseals made from the sheet material of this invention exhibit less springback than do tabs of conventional tabbed innerseals. The invention also includes innerseals and sealing membranes made from the aforementioned sheet material and containers utilizing these innerseals and sealing membranes.