Zip fastener
AssigneeJ. & P. Coats Limited
InventorSteven Smith
Life of this patent
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Abstract
A zip includes: a pair of stringer tapes, each of which supports a row of teeth; the teeth on the two tapes being mutually opposing and capable of interdigitation thereby to fasten one stringer tape to another; a slider, adapted to move along and whose motion is guided by the rows of teeth, the slider being adapted to cause interdigitation of the teeth as a result of motion along the teeth in a first direction, and to disconnect the teeth by motion along the teeth in a second direction; wherein the first and second stringer tapes are formed of a matrix of threads interspersed with a waterproof material.
Claims12
A zip fastener for use in conjunction with a material having a native characteristic being water-resistance or fire retardancy, the zip fastener comprising:
- a pair of stringer tapes, each of which supports a row of teeth;
- the teeth on each tape being mutually opposing and capable of interdigitation thereby to fasten one tape to another;
- a slider, adapted to move along the rows of teeth and whose motion is guided by the teeth, the slider being adapted to cause interdigitation of the teeth as a result of motion along the teeth in a first direction, and to cause extradigitation of the teeth by motion along the teeth in a second direction;
- wherein the first and second stringer tapes are formed of a matrix comprising warp and weft woven threads,
- wherein the warp and weft woven threads are each formed of a combination yarn comprising at least two plies, one ply comprising filaments having the native characteristic of the material.
A method of manufacturing a zip comprising the steps of:
- creating a pair of stringer tapes by weaving a weft yarn being a combination yarn comprising a ply of thermofusible material with at least one warp yarn being a combination yarn comprising a ply of thermofusible material;
- attaching a row of zip teeth to an edge of each stringer tape;
- attaching a zip slider to the stringer tapes such that the zip teeth of the stringer tapes oppose each other and the slider moves along the zip teeth to fasten and unfasten the zip;
- and
- applying heat to the stringer tapes thereby to melt the thermofusible filaments.
Dependencies are inferred from the claim text.