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:
Jun. 05, 1990
Filed:
Jun. 14, 1989
Applicant:
Inventors:
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B65D / ;
U.S. Cl.
CPC ...
428 365 ; 206807 ; 383-5 ; 428 341 ; 428 357 ; 428 364 ; 428212 ; 428213 ; 4283155 ; 4283157 ; 4283166 ; 4283179 ; 428349 ; 428407 ; 428516 ;
Abstract
A tamper-evident film includes a hydrocarbon polymer core layer (a) having an upper face and a lower face; an oriented tamper-evident layer applied to at least the lower face of core layer (a), layer (b) being fabricated from a mixture of a polyolefin and a filler of particles which induce cavitation upon orientation, layer (b) having an internal cohesiveness which is less than the internal cohesiveness and bonding strength of packaging adhesives and heat seals; and, an oriented skin layer (c) applied to the upper face of core layer (a) if layer (b) has not been applied thereon, layer (c) being hydrocarbon polymer. A tamper-evident package seal and package are also provided.