초록 ▼

A novel zipper profile is disclosed in which the cross-sectional shape of the zipper is such that it can be closed most easily by pressing the bottom together first, then rolling it closed toward the top. The novel slider is shaped so that it operates in this fashion on the zipper profile, holding t

A novel zipper profile is disclosed in which the cross-sectional shape of the zipper is such that it can be closed most easily by pressing the bottom together first, then rolling it closed toward the top. The novel slider is shaped so that it operates in this fashion on the zipper profile, holding the top open while it presses the bottom together, then presses the top together while the slider passes by.

대표청구항 ▼

A plastic reclosable fastener with slider particularly suited for thermoplastic bags and the like comprising a pair of flexible plastic strips having separable fastener means extending along the length thereof comprising reclosable interlocking male and female profile elements on the respective stri

A plastic reclosable fastener with slider particularly suited for thermoplastic bags and the like comprising a pair of flexible plastic strips having separable fastener means extending along the length thereof comprising reclosable interlocking male and female profile elements on the respective strips, said strips including profiled tracks extending along the length thereof parallel to the male and female elements, said male and female elements having complimentary cross sectional shapes such that they are closed by pressing the bottom of the elements together first and then rolling the elements to a closed position toward the top thereof, a straddling slider on said tracks for closing or opening the reclosable fastener elements comprising an inverted U-shaped plastic member having a back for moving along the top edges of said tracks with side walls depending therefrom for cooperating with said tracks and extending from an opening end of the slider to a closing end, said side walls having a greater spacing at the opening end than the closing end, a separator finger depending from said back between said side walls and inserted between said tracks, said separator finger being shaped throughout the length thereof for first holding the top of the male and female elements open while the slider first presses the bottom of the elements together and then permitting the slider to press the top of the elements together while the slider moves in a closing direction, said slider having shoulders projecting inwardly from said depending side walls and shaped throughout the length thereof for cooperation with said depending separator finger in creating the rolling action in opening and closing said reclosable interlocking male and female profile elements.