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US 12,703,177 B2Granted
Barrier film and laminate
AssigneeToppan Holdings Inc.
InventorMiki Fukugami
Life of this patent
Estimating the term…
Abstract
A barrier film including a substrate film containing a polyolefin, in which when both surfaces of the barrier film are analyzed with a fluorescent X-ray analyzer, a value obtained by dividing a sum of fluorescent X-ray intensities of chlorine detected from the both surfaces by a thickness of the substrate film (the sum of fluorescent X-ray intensities of chlorine/the thickness of the substrate film) is 0.015 kcps/μm or less.
Claims15
A barrier film comprising:
- a substrate film containing a polyolefin;
- and a gas barrier layer formed on at least one surface of the substrate film, wherein the gas barrier layer comprises a gas barrier coating layer, the gas barrier coating layer is formed from a composition comprising hydrolyzed tetraethoxysilane, polyvinyl alcohol and hydrolyzed 1,3,5-tris(3-trialkoxysilylpropyl) isocyanurate in a mass ratio of solid content in a range of 60-80:15-25:5-15, and
- when both surfaces of the barrier film are analyzed with a fluorescent X-ray analyzer, a value obtained by dividing a sum of fluorescent X-ray intensities of chlorine detected from the both surfaces by a thickness of the substrate film (the sum of fluorescent X-ray intensities of chlorine/the thickness of the substrate film) is 0.015 kcps/μm or less.
Dependencies are inferred from the claim text.