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. 15, 1998
Filed:
Jul. 15, 1997
Abstract
A packaging material (41) and a process and apparatus for producing the same are disclosed herein, wherein an satisfactorily enhanced gas barrier property is intended to be provided using a grease-proof paper sheet (23). A first layer (16) is formed on an outer surface which will be directed outwardly, when a package or container will be formed from the packaging material, and a second layer (37) is formed on an inner surface which will be directed outwardly, when the package or container will be formed from the packaging material. A substrate and a grease-proof paper layer (23) are provided between the first layer (16) and the second layer (37). At least one of the first and-second layers (16) and (37) is formed from a polymer selected from the group consisting of polyolefins. The grease-proof paper layer (23) has a TAPPI value in a range of 100 to 400 seconds. A polymer is coated on at least one of surfaces of the grease-proof paper layer (23). Thus, it is possible to provide a satisfactorily enhanced gas barrier property. The surface of the grease-proof paper layer (23) can be also activated by a surface-activating treatment.