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:
Aug. 24, 1999
Filed:
Aug. 26, 1997
Ryuta Miyake, Takatsuki, JP;
Takaaki Murai, Otake, JP;
Daicel Chemical Industries, Ltd., Osaka, JP;
Abstract
A barrier composite film comprises a base film, an anchor coat layer, an inorganic layer such as a silicon oxide layer, and a coating layer containing a silane coupling agent and a barrier resin (e.g. a vinylidene chloride-series copolymer, an ethylene-vinyl alcohol copolymer), the layers being formed on at least one side of the base film in the order of reference. The anchor coat layer can be made of (A) a chlorine-containing resin such as a vinyl chloride-vinyl acetate copolymer, (B) a polyisocyanate compound, and (C) a saturated polyester resin having a glass transition temperature of -10.degree. C. to 20.degree. C. and being substantially unreactive to the component (B). A heat-sealing layer may be formed on the surface of the coating layer or the other side of the base film. This composite film provided with the inorganic layer can avoid a loss of its adhesive properties and barrier properties even under severe conditions such as retort treatment.