Patent ID: 7799395
Filing Date: 2010-09-21
Classification: B29D,B29K,C01B,Y10T

Abstract:
1. A homogeneous clay film comprising: clay as a main component and one or more of an additive, or clay as a main component and one or more of an additive and a functional component, wherein the additive is one or more selected from the group consisting of epsilon-caprolactam, dextrin, chitosan, a starch, a cellulose resin, a gelatin, an agar-agar, a wheat flour, a gluten, an alkyd resin, a polyurethane resin, an epoxy resin, a fluororesin, an acrylic resin, a methacrylic resin, a phenol resin, a polyamide resin, a polyester resin, a polyimide resin, a polyvinyl resin, a polyethylene glycol, a polyacrylamide, a polyethylene oxide, a protein, a deoxyribonucleic acid, a ribonucleic acid, a polyamino acid, a phenol, and a benzoic acid, wherein the clay film has a structure in which layers of clay particles are highly oriented, wherein the clay film has enough mechanical strength and flexibility to be used as a self-supporting film, wherein the clay film contains no pinholes, wherein the clay film has a gas permeation coefficient of less than 3.2×10 wherein the clay film has excellent flexibility, the weight loss over a temperature range of 200 to 600° C. in differential thermal analysis is less than 10%, the basic structure does not change, and no pinholes exist.