| 摘要 |
PROBLEM TO BE SOLVED: To facilitate re-opening without any increase in cost.SOLUTION: A zip fastener 10 seals an opening 9 of a bag-like packaging material YA1 including a pair of opposite faces YA11, YA12. The zip fastener 10 includes: a male type engaging element 11 attached to one face YA11 along the opening 9; and a female type engaging element 12 attached to the another face YA12 along the opening 9. The female type engaging element 12 includes: a female base part 121 attached to the another face YA12; and a pair of female projections 122 clamping both sides of a male projection 112 of the male type engaging element 11. The paired female projections 122 are respectively projected from the female base part 121 to be oblique relative to a direction perpendicular to the another face YA12. |
