| 摘要 |
Reclosable, separable fastener bags having openable mouths defined by pull flanges are made by providing wall panel sheet material having pull flange area along an edge, uninterruptedly assembling and joining a base surface of substantial width on a preformed extruded plastic resiliently flexible interlocking fastener profile closure strip in face-to-face assembly relation with a surface of the wall panel material along the inner side of the pull flange area, and in the continuous advance of the assembly uninterruptedly securing a minor width portion of the base surface adjacent to the pull flange area as a hinge attachment to the wall panel material but leaving the remainder of the base surface free so that the strip is adapted to swing hingedly relative to the wall panel material, thus permitting the strip to swing hingedly relative to the wall panel due to force exerted against the wall panel from within the bag, but permitting quick separation of interlocked fastener profiles for opening the bag in response to separation pull on the pull flanges.
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