Method for manufacturing a watertight zipper
AssigneeUnitech Zipper & Machinery Co., Ltd.
InventorJung-Yuan Cheng
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a watertight zipper solves the problem of low watertight effect of the modern watertight zipper. The method includes producing a waterproof stringer tape and forming a waterproof layer by injection molding. The waterproof layer covers a lateral edge of the waterproof stringer tape and includes a plurality of recesses. The method for manufacturing the watertight zipper further includes forming an aperture in each of the plurality of recesses. The aperture extends through the waterproof layer and the waterproof stringer tape. The method for manufacturing the watertight zipper further includes forming a plurality of scoops in the plurality of recesses by injection molding.
Claims11
A method for manufacturing a watertight zipper, comprising:
- producing a waterproof stringer tape comprising adhering a waterproof film to a surface of a stringer tape, and adhering another waterproof film to another surface of the stringer tape;
- injection molding a waterproof layer covering a lateral edge of the waterproof stringer tape and comprising a plurality of recesses;
- forming an aperture in each of the plurality of recesses, wherein the aperture extends through the waterproof layer and the waterproof stringer tape;
- and
- injection molding a plurality of scoops in the plurality of recesses, wherein each of the plurality of scoops comprises an upper scoop portion and a lower scoop portion, and wherein the upper and lower scoop portions are interconnected via the aperture.
A method for manufacturing a watertight zipper, comprising:
- producing a waterproof stringer tape from a tape having a cord portion;
- injection molding a waterproof layer covering a lateral edge of the waterproof stringer tape and the cord portion and comprising a plurality of recesses arranged on the cord portion, wherein the plurality of recesses extends beyond an outer end of the cord portion and an inner end of the cord portion opposite to the outer end of the cord portion, wherein the cord portion includes a face that is exposed from the plurality of recesses;
- and
- injection molding a plurality of scoops in the plurality of recesses, wherein each of the plurality of scoops comprises an upper scoop portion and a lower scoop portion, wherein the upper and lower scoop portions are interconnected via a respective one of the plurality of recesses, wherein the waterproof layer comprises a top portion, a bottom portion, and a lateral portion connected between the top portion and the bottom portion, wherein the top portion is connected to a top face of the waterproof stringer tape and the upper scoop portion, wherein the bottom portion is connected to a bottom face of the waterproof stringer tape and the lower scoop portion, wherein the lateral portion is located outwardly of the outer end of the cord portion to delimit a gap between the lateral portion and the outer end of the cord portion, wherein the lateral portion comprises an edge that is in an even form, wherein the plurality of recesses is arranged on the top portion or the bottom portion of the waterproof layer, and wherein each of the plurality of scoops engages with the face of the cord portion that is exposed from the plurality of recesses and fills the gap between the lateral portion and the outer end of the cord portion.
Dependencies are inferred from the claim text.