The prevent invention provides a mold core assembly and a slidable element. The mold core assembly is used to form a partial shape of the sliding element applied to a zipper head assembly structure. The mold core assembly includes a first mold core structure and a second mold core structure. The first mold core structure has two first lateral structure bodies and a first middle structure body disposed between the two first lateral structure bodies. The first middle structure body has two first extending portions. The second mold core structure has two second lateral structure bodies and a second middle structure body disposed between the two second lateral structure bodies. The second middle structure body has two second extending portions corresponding to each other. Each first extending portion has a nonuniform thickness, and each second extending portion has a nonuniform thickness.

The prevent invention provides a mold core assembly and a slidable element. The mold core assembly is used to form a partial shape of the sliding element applied to a zipper head assembly structure. The mold core assembly includes a first mold core structure and a second mold core structure. The first mold core structure has two first lateral structure bodies and a first middle structure body disposed between the two first lateral structure bodies. The first middle structure body has two first extending portions. The second mold core structure has two second lateral structure bodies and a second middle structure body disposed between the two second lateral structure bodies. The second middle structure body has two second extending portions corresponding to each other. Each first extending portion has a nonuniform thickness, and each second extending portion has a nonuniform thickness.

A slider garage includes an overmolded body, the overmolded body oriented on a zipper, the overmolded body including an overmolded male portion and an overmolded female portion, the overmolded male and female portions positioned on an end of the zipper, such that each is on one side of the zipper, the overmolded male portion being shaped such that it fits in the overmolded female portion in a watertight fashion and the overmolded body is molded over a portion of the zipper.

A slider garage includes an overmolded body, the overmolded body oriented on a zipper, the overmolded body including an overmolded male portion and an overmolded female portion, the overmolded male and female portions positioned on an end of the zipper, such that each is on one side of the zipper, the overmolded male portion being shaped such that it fits in the overmolded female portion in a watertight fashion and the overmolded body is molded over a portion of the zipper.

A method for preparing discontinuous zipper chain for use in apparel manufacturing includes: programming a teeth-securing machine to secure zipper teeth at specified intervals along an edge of each of a pair of zipper tapes; feeding the pair of zipper tapes into the teeth-securing machine so as to secure interlocking zipper teeth to the zipper tapes at the specified intervals, thereby forming a discontinuous zipper chain having successive toothed sections positioned along a length thereof and spaced apart from one another by gap sections without zipper teeth; and spooling or packaging the discontinuous zipper chain for use in apparel manufacturing.

A locking assembly includes a slider comprising a follower, a rail slidably engaged to the follower, the rail comprising a plurality of rigid sections having a cross-sectional perimeter and at least one collapsible section connecting the rigid sections, the at least one collapsible section movable between a first state in which the collapsible section has a first length and a first cross-sectional perimeter that does not project beyond the perimeter of the plurality of rigid sections and a second state having a second length less than the first length and a second perimeter that projects beyond the perimeter of the plurality of rigid sections.

A locking assembly includes a slider comprising a follower, a rail slidably engaged to the follower, the rail comprising a plurality of rigid sections having a cross-sectional perimeter and at least one collapsible section connecting the rigid sections, the at least one collapsible section movable between a first state in which the collapsible section has a first length and a first cross-sectional perimeter that does not project beyond the perimeter of the plurality of rigid sections and a second state having a second length less than the first length and a second perimeter that projects beyond the perimeter of the plurality of rigid sections.

A locking slider assembly includes a slider comprising a slot. The assembly includes a rail slidably inserted through the slot of the slider, the rail having at least one tooth movable between an extended state in which the tooth prevents the slot from moving in at least one direction along the rail, and a retracted state in which the slot can slide past the at least one tooth.

The disclosure discloses a method for forming a rubber layer on a surface of a resin material. In the method, painting is first performed on the surface of the resin material to form a painting layer, using a paint to which a pigment has been added; then, rubber coating is performed to form a rubber layer on the painting layer. The method of the disclosure may be used in surface treatment of a fastener product. The disclosure further discloses a slide fastener, a buckle and a snap button using the method of the disclosure. The method of the disclosure may solve a conventional problem that a rubber coating is likely to fall off a resin surface, and the rubber on the surface of the resultant fastener product is less likely to fall off.

The disclosure discloses a method for forming a rubber layer on a surface of a resin material. In the method, painting is first performed on the surface of the resin material to form a painting layer, using a paint to which a pigment has been added; then, rubber coating is performed to form a rubber layer on the painting layer. The method of the disclosure may be used in surface treatment of a fastener product. The disclosure further discloses a slide fastener, a buckle and a snap button using the method of the disclosure. The method of the disclosure may solve a conventional problem that a rubber coating is likely to fall off a resin surface, and the rubber on the surface of the resultant fastener product is less likely to fall off.