| 摘要 |
<p>PURPOSE:To provide a moisture barrier article excellent in moisture permeability and a sealing ability for a matter to be kept dry, by using polyetherester elastomer as a packing material. CONSTITUTION:A film is formed by adding a stabilizer to a polyetherester elastmer i.e. a block copolymer of crystalline aromatic polyester such as polytetramethyleneterephthalate, as a hard segment, and polyoxytetramethyleneglycol, as a soft segment, and dissolving them with a solvent into a solution state. A bag-shaped article is formed by using this film, and is sealed after putting a desiccating agent, such as a powdered CaCl2, into the article,then an article used for keeping a matter dry is obtained.</p> |
