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:
Jan. 19, 1988
Filed:
Oct. 22, 1986
Applicant:
Inventor:
Peter P Gach, Evansville, IN (US);
Assignee:
Sunbeam Plastics Corporation, Evansville, IN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ; B65B / ; B67B / ;
U.S. Cl.
CPC ...
53421 ; 53478 ; 53487 ; 156 69 ;
Abstract
A method of constructing a closure and applying it to a container to provide a hermetically sealed, tamper-indicating package which can be easily opened without danger of contaminating the container contents by fragmentation of the sealing element. The sealing element is formed as a laminated liner disk haivng an inner foil layer and an outer tough thermoplastic layer. A heat sealing layer allows the liner disk to be hermetically sealed to the container by induction heating after the closure is attached to the container. A frangible opening line is created by melting through the thermoplastic layer and heat sealing layer to the metal foil layer.