Zipper having longitudinal channel that limits range of slider travel

A slider-zipper assembly comprising a zipper and a slider mounted to said zipper, wherein said zipper comprises first and second interlockable zipper parts, said first zipper part comprising a first longitudinal channel having first and second closed ends and a substantially constant profile between said first and second closed ends, and wherein said slider causes confronting portions of said first and second zipper parts to engage during slider travel in a first direction and to disengage during slider travel in a second direction opposite to said first direction, said slider comprising a first projection arranged to project into and travel along said first longitudinal channel during slider travel, said first closed end being in the path of said first projection when said slider travels in said first direction.

A slider-zipper assembly comprising a zipper and a slider mounted to said zipper, wherein said zipper comprises first and second interlockable zipper parts, said first zipper part comprising a longitudinal channel having a substantially constant profile and first and second slider end stops disposed in said channel, wherein said slider causes confronting portions of said first and second zipper parts to engage during slider travel in a first direction and to disengage during slider travel in a second direction opposite to said first direction, said slider comprising means for projecting into said longitudinal channel during slider travel, said first slider end stop posing an obstacle to further travel of said slider in said first direction when said projecting means impinge on said first slider end stop, and said second slider end stop posing an obstacle to further travel of said slider in said second direction when said projecting means impinge on said second slider end stop.

A method of manufacturing a zipper strip with slider end stops, said method comprising the following steps:

• extruding a zipper strip having a longitudinal channel;
• and
• partially or fully obstructing said channel at spaced intervals therealong.

A method of manufacturing a zipper strip with slider end stops, said method comprising the following steps:

• extruding a zipper strip;
• and
• forming a multiplicity of aligned longitudinal channels in said zipper strip at spaced intervals therealong, said channels being formed by removing material from said zipper strip.

A method of manufacturing reclosable packaging material, comprising the following steps:

• extruding a web of bag making film having first and second mutually interlockable profiled closure members integrally formed with opposing sides of said web, said first closure member comprising a longitudinal channel;
• and
• partially or fully obstructing said channel at spaced intervals therealong.

A method of manufacturing reclosable packaging material, comprising the following steps:

• extruding a web of bag making film having first and second mutually interlockable profiled closure members integrally formed with said web on opposing sides thereof;
• and
• forming a multiplicity of aligned longitudinal channels in said first closure member at spaced intervals therealong, said channels being formed by removing material from said first closure member.