Plastic end clips fused to plastic zipper
AssigneeMobil Oil Corporation
InventorF. John Herrington, Jr.
Life of this patent
Estimating the term…
Abstract
A plastic clip is located at each end of a plastic zipper of a thermoplastic bag and fused with the ends of the profile elements of the zipper into a single mass by melting the clip to the zipper material.
Claims13
In the manufacture of thermoplastic bags and the like having a reclosable fastener extending along the mouth of the bag, the fastener comprising a pair of flexible plastic strips secured to the facing side walls of the bag and having reclosable interlocking male and female profile elements on the respective strips, the improvement in a leakproof reclosable fastener comprising:
- end clip means located at the opposite ends of said reclosable fastener, each of said end clip means comprising a plastic member extending over the top of said reclosable fastener and fused with the ends of the male and female profile elements into a single mass so they are leakproof and integral with the plastic member, each said plastic member and said male and female profile elements being made of compatible plastic materials so that they can be fused together.
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 strips secured to the facing side walls of the bag and having reclosable interlocking male and female profile elements on the respective strips, the improvement in a leakproof reclosable fastener comprising:
- end clip means located at the opposite ends of said reclosable fastener, each of said end clip means comprising a plastic strap member extending over the top of said reclosable fastener and fused with the ends of the male and female profile elements into a single mass so they are leakproof and integral with the strap member, each said strap member after fusion to said male and female profile elements projecting outwardly therefrom and being engageable with the slider for preventing the slider from moving past the ends of the reclosable fastener, said strap member and said male and female profile elements being made of compatible plastic materials so that they can be fused together.
In the manufacture of thermoplastic bags and the like having a reclosable fastener extending along the mouth of the bag, the fastener comprising a pair of flexible plastic strips secured to the facing sidewalls of the bag and having reclosable interlocking male and female profile elements on the respective strips, the method of making a leakproof reclosable fastener comprising the steps of:
- positioning end clip means at the opposite ends of the male and female profile elements of the reclosable fastener, each of the end clip means comprising a plastic member extending over the top of the male and female profile elements, each of said plastic members and said male and female profile elements being made of compatible plastic materials so they can be fused together, and fusing the plastic member with the ends of the male and female profile elements into a single mass so they are leakproof and integral with each other.
Dependencies are inferred from the claim text.