| 摘要 |
PROBLEM TO BE SOLVED: To provide a cover material whose outer appearance is beautiful with no paper peel. SOLUTION: This cover material is made of a base material sheet 11 mainly made of paper and a heat adhesive resin layer 12 covering the same. On the total peripheral edge excluding the inner edge (c) of a seal part at the inner side of the seal part 15 contacting the flange part 21 of the cover material, a half cut line (a) is formed from the outside of the heat adhesive resin layer to the paper layer of the base material going through the resin layer. On the diagonal crossing part from one end edge (m) to the other end edge (n) of one corner of the seal part, a second half cut line (b) is formed from the outside of the resin layer to the paper layer going through the resin layer. A peeling varnish layer 12 is formed in an area containing the half cut line at the outside of the line and between the resin layer 12 and the sheet 11 in the area containing the second half cut line at the inner side of the second half cut line. |
