| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a packing material having excellent aroma keeping property wherein interlaminar peeling phenomenon due to permeation of an aromatic component does not occur by using a composite film formed by adding a starch in a polyvinyl alcohol resin as a heat seal layer so as to prevent adsorption of the aromatic component. SOLUTION: In a packing material A, a heat seal layer 1, a barrier layer 2, and a base material film layer 3 are layered in this order toward the outside face from the inside face which is in contact with contents. In the packing material, as shown by an arrow P, the heat seal layer 1 is formed of a composite film F which is formed of a polyvinyl alcohol resin having a starch mixed therein. The packing material is folded so as to make the face of the heat seal layer become opposite, or superposed so as to heat-seal the superposed end part of its outer periphery and manufacture a packing container. When the packing container is filled with a detergent having an aromatic component therein, the aromatic component is not adsorbed, aroma keeping property and keeping quality are extremely excellent, and interlaminar peeling phenomenon of the packing material due to permeation of the aromatic component is not generated.</p> |
