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:
Oct. 23, 2001
Filed:
Oct. 16, 1998
Hideki Sakai, Miyazaki, JP;
Yukiko Katoh, Kanagawa, JP;
Asahi Kasei Kaisha, Osaka, JP;
Abstract
A vinylidene chloride copolymer film or a laminated film far more excellent in barrier properties than the conventional films provided. A vinylidene chloride copolymer film comprising 88% to 93% by weight of vinylidene chloride and 12% to 7% by weight of at least one monomer copolymerizable with vinylidene chloride and having a ratio (Q/P) of 1.5 or more, wherein Q is the integrated intensity of the peak at 2&thgr;=38° and P is the integrated intensity of the peak at 2&thgr;=15°, each as determined by the wide angle X-ray reflection method, shows excellent barrier properties. Further, a laminated film comprising a base film and a vinylidene chloride copolymer layer which comprises 88% to 93% by weight of vinylidene chloride and 12% to 7% by weight of at least one monomer copolymerizable with vinylidene chloride and which has a ratio (I/J) of 1.4 or above, wherein I and J are the peak intensity and base line intensity at 2&thgr;=38°, respectively, and a half band width of the peak at 2&thgr;=38° of 3° or below, each as determined by the wide angle X-ray reflection method, shows excellent barrier properties.