| 摘要 |
A reclosable plastic bag construction having front and back walls attached at their side edges with continuous elongate interlocking separable rib and groove elements along confronting faces of the walls adjacent the top of the bag with the rib and groove elements being interlockable by the application of closing pressure and having frictional surface means at their outer surface for applying local forces of opposing directions parallel to the rib and groove to cause a curl in the interlocked rib and groove and to thereby cause them to separate by relatively sliding the rib and groove axially relative to each other. |
