| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent adsorption of the medical constituent of plaster, improve moistureproofness and sealability, and enable long-term preservation of the plaster by using a packaging material in which a moistureproof base film and a biaxially oriented polyester film of a heat seal type are bonded with a dry laminate means or the like. SOLUTION: The packaging material 3 of a packaging bag is formed of a laminate body comprising an outer layer 4 and an inter layer 4, and is processed by being heat sealed in the same manner as formation of a three- sided-sealed bag or pillow bag. The outer layer 4 is a biaxially oriented polypropylene film with a thickness of, for example, 25μm and the inner layer 5 is a biaxially oriented polyester film of a heat seal type with a thickness of, for example, 15μm, and they are bonded together with a dry laminate adhesive 6. That is, a property in which methyle salicylate for example, as the medical constituent of plaster, is not adsorbed and a property excellent in sealability are both imparted to the inner layer 5. Thus, a packaging bag which is excellent in moistureproofness and sealability and preservable plaster sealed therein is obtained.</p> |
