Ykk Corporation

Ryo Mikuma

Masamichi Hasegawa

Mineto Terada

Masanori Kayahara

Shunji Akashi

Ryo Tanaka

Yuki Sakagami

Makoto Takayama

Kazuya Taniguchi

Hisashi Yoneshima

Yutaka Tominaga

Masahiro Kusayama

A slide fastener includes a resin sheet that joins tapes on one surface among both surfaces of the tapes in a thickness direction, and that extends from a stop on a side opposite to element rows and is integral with the stop. The stop includes recesses on a boundary portion with the sheet of left and right side portions that respectively correspond to the tapes, and includes a recess region in a surface of the stop that is a region whose range in a left-right direction is defined by leftmost and rightmost ones of the recesses. A surface of the sheet includes a flat portion that is a region extending from the recess region toward the side opposite to the element rows.

Slide fastener

A slider for a waterproof slide fastener includes an upper blade and a lower blade opposing each other in an up-down direction, and a connecting post connecting the upper blade with the lower blade. Each of opposing surfaces includes a close-contact surface for sandwiching and close-contacting with a first stop in the up-down direction. At least one of the opposing surfaces includes right and left inclined surfaces provided respectively on right and left sides at a front sides of the close-contact surface and inclined in a direction widening a gap between the upper blade and the lower blade as the right and left inclined surfaces go forward. The at least one of the opposing surfaces includes an extended close-contact surface provided between the right and left inclined surfaces and extending forward from the close-contact surface.

Slider for waterproof slide fastener and waterproof slide fastener

The waterproof slide fastener includes a slider and a slider stopper member. A flange portion of the slider includes a linear portion extending linearly from a rear mouth and a curved portion extending to curve outward from an end part of the linear portion. The slider stopper member includes an insertion base portion disposed across right and left waterproof tapes, right and left insertion leg portions extending from the insertion base portion toward element rows, and flange press contact portions disposed on outer side surfaces of the respective insertion leg portions, wherein the flange press contact portion includes a press contact curved portion and a press contact straight portion extending linearly from a rear end part of the press contact curved portion. Thereby, even when the slider is held at a sliding limit vicinity position away from a sliding limit position, watertightness can be exerted.

Waterproof slide fastener

A waterproof slide fastener with waterproof property in which covering the whole front and rear faces of a woven or knitted fastener tape with an elastomer, and fastener elements made of a thermoplastic resin are injection molded on the lateral edge of the fastener tape. In particular, a waterproof slide fastener that can maintain the watertightness and airtightness even when the fastener tape is bent in the lengthwise direction because, on the assumption that the minimum width between the outer end edges of the neck part of the fastener element in the lengthwise direction of the fastener tape that is a slide direction in which the slider slides is N and the width between the outer end edges of the body part of the fastener element in the same lengthwise direction is B, the value of B/N is between 2.5 and 3.5.

A waterproof slide fastener where first and second through-holes are drilled in a tape side edge portion of a waterproof tape at specific intervals from one another, and first and second halves of a fastener element are integrally connected to each other through first through-holes. A stopper includes a body portion and an extension portion extending from the body portion. First and second halves of the stopper straddle a pair of waterproof tapes and are integrally connected to each other through second through-holes. According to the waterproof slide fastener, a manufacturing step thereof can be simplified, and it is possible to effectively prevent water from entering the waterproof slide fastener even if it receives a lateral pulling force.

A slide fastener having a waterproof structure, and having a pair of left and right fastener stringers including a pair of left and right waterproof fastener tapes and a pair of left and right fastener element rows having a plurality of fastener elements along the side ends of the fastener tapes opposite to each other; a slider for engaging and disengaging the left and right fastener elements with and from each other; and a bottom stopper which is formed over the left and right fastener tapes at lower ends of the fastener elements. The bottom stopper covers a first fastener element near the lowest end except an upper portion of its engaging head and a lower portion of the base of the second fastener element adjacent upward to the first fastener element.

Bottom end stop for slide fastener

A waterproof slide fastener in which an entire surface of a fastener tape is covered with elastomer, through holes are made in a side edge of the fastener tape, and fastener elements each comprising a coupling head, a neck portion, an engaging projection, a leg portion and a tongue piece, are molded by injection molding so as to cover the through holes. Reinforcing portions are provided projectingly from sides of the leg portion so as to cover at least a part of each of the through holes in a longitudinal direction of the through holes made in the fastener tape so that the reinforcing portions surround the through holes, so the reinforcing portions prevent the through holes from being exposed even when the fastener tape is bent, thereby maintaining water-tightness and airtightness.

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Toyama, Japan

Ryo Mikuma