The invention discloses a flat bottom resin zipper, which injects resin chain teeth onto a core wire or a chain cloth. Each resin chain tooth has a sewing thread slot on the top and a chain cloth embedding groove on the bottom. Then sew the entire resin chain teeth to the chain cloth, so that the sewing threads are tightened in the sewing thread slots, and the chain cloth is embedded in the chain cloth embedding grooves, forming a double fixed structure of injection molding and sewing thread sewing. Afterwards, the inner side of the chain cloth is folded back to form a flat bottom zipper with only the chain cloth on one side of the zipper without any protruding resin chain tooth, which can be used as an anti-pinch zipper or an invisible zipper.

The invention discloses a flat bottom resin zipper, which injects resin chain teeth onto a core wire or a chain cloth. Each resin chain tooth has a sewing thread slot on the top and a chain cloth embedding groove on the bottom. Then sew the entire resin chain teeth to the chain cloth, so that the sewing threads are tightened in the sewing thread slots, and the chain cloth is embedded in the chain cloth embedding grooves, forming a double fixed structure of injection molding and sewing thread sewing. Afterwards, the inner side of the chain cloth is folded back to form a flat bottom zipper with only the chain cloth on one side of the zipper without any protruding resin chain tooth, which can be used as an anti-pinch zipper or an invisible zipper.

A closure or fastener is provided for apparel, shoes, equipment, and other applications. The closure may have a female component having a receiving area and a male component having a locking portion. Either or both the male component and female component may have a notched appearance to provide additional flexibility and comfort to the closure. Flanges on the male components and the female components may facilitate off-registration engagement of the closure system. Textures present or absent in the closure system may permit or prevent sliding by the male components and female components when the closure is engaged.