End clamp stops for plastic reclosable fastener
AssigneeMobil Oil Corporation
InventorsF. John Herrington, Jr., Eric A. St. Phillips
Life of this patent
Estimating the term…
Abstract
A thermoplastic bag having a zipper that is operated by a slider is provided with end termination clips that firmly holds the two zipper elements together to resist stresses applied by normal use and also stops the slider from going off past the end of the zipper. The end termination clip is formed by clamps consisting of plastic members between which are sandwiched the zipper and fin and wherein the clamping members are held together by a plastic rivet through the film. In one embodiment the end termination clips include hook structure for engaging a detent in the slider which provides the bag user with the feel of a definite parking position for the slider when the bag is closed.
Claims4
In the manufacture of thermoplastic bags and the like having a reclosable fastener extending along the mouth of the bag and a slider straddling the fastener for opening or closing the fastener, the fastener comprising a pair of flexible plastic strip secured to the facing sidewalls of the bag and having reclosable interlocking male and female profile elements on the respective strips, the improvement comprising:
- end clamp means located at the opposite ends of said reclosable fastener, each of said end clamp means comprising a pair of clamp members positioned on opposite sides of the bag for clamping the pair of strips and the facing sidewalls of the bag therebetween and holding the male and female profile elements in engaged position, and
- means for clamping each of said pair of clamp members together comprising a member extending through the ends of the pair of strips and the facing sidewalls of the bag and secured at the opposite ends thereof to said pair of clamp members to provide a seal at the ends of said reclosable fastener, said end clamp means being engageable with the slider for preventing the slider from moving past the ends of the reclosable fastener.
Dependencies are inferred from the claim text.