Ykk Corporation

Mutsuo Hirota

Yoshiharu Yamaguchi

Yoshimichi Yamakita

Kozo Watanabe

Tomohisa Ishida

Akira Ishibashi

Tsutomu Hamatani

Yoshiharu Tanaka

Mamoru Tanaka

Masanori Hirasawa

Tatsumi Wakai

Toyosaku Ogura

Hiromi Aoshima

Yoshifumi Miyajima

A resin safety shoe toe cap made from a fiber-reinforced thermoplastic resin, wherein the toe cap resin safety shoe toe cap is constituted from rising parts comprising a front end rising part, a big toe side rising partand a little toe side rising part; a top part; and a base part, wherein the thickness of the big toe side rising partis made to be greater than the thickness of the little toe side rising part. Moreover, the big toe side rising partand the little toe side rising partare connected to the front end rising partby curved surface partshaving different curvatures, and the rising parts are formed so as to rise up approximately perpendicularly to the base part. The safety shoe toe cap not only satisfies the performances in L-class and S-class of JIS T 8101, but also the impact resistance and compression resistance performances stipulated in H-class of JIS T 8101 and safety shoe standards in the CEN Standard, without impairing the ability to fit to shoes and wearer's feet.

Resin safety shoe toe cap

A reinforcing tape for a slide fastener comprises a polyamide elastomer film manifesting a modulus of elasticity in bending in the range of 6,000 to 9,000 kg/cm and an adhesive layer. In a preferred embodiment, a polyester hot-melt adhesive is used for the adhesive layer. Preferably an intermediate layer having a thickness thinner than the thickness of the polyamide elastomer film and that of the adhesive layer is interposed between the polyamide elastomer film and the adhesive layer. In this case, a polyester anchor coat agent is used for the intermediate layer.

Reinforcing tape for slide fastener

An object of the present invention is to provide a linear slide fastener capable of maintaining a stabilized condition in which an attachment yarn for attaching a fastener element is never out out by abrasion due to a contact with other object or sliding of a slider. A coil-like or zigzag-like linear fastener element row is attached to a fastener tape with a multi-filament attachment yarn or a sewing yarn of double lock sewing system. Then, synthetic resin material having adhesive property is applied to an entangled portion between a looper yarn disposed on the linear fastener element row and a needle yarn so as to permeate the entangled portion and harden. Consequently, the attachment yarn is coated and fixed with the synthetic resin material, As the attachment yarn, a weaving yarn or a warp knitting yarn is used. The synthetic resin material is applied to the entangled portion or an intersecting portion so as to permeate them. As a result, a strong, abrasion resistant yarn can be formed and the yarns are bonded with each other so as to achieve a stabilized condition which provides an excellent performance for guiding a slider.

Linear slide fastener and manufacturing method thereof

A formed article of fiber-reinforced thermoplastic resin which has been adapted for use in a sliding member by restoring the wear resistance once degraded by the addition of reinforcing fibers to the normal level is disclosed. This formed article comprises a fiber-reinforced resin material of a thermoplastic resin containing reinforcing fibers and incorporating therein additionally as a sliding property-imparting agent a material having a storage elastic modulus in the range of 3.5&times;10 Pa to 5.0&times;10 Pa in a service temperature range of 30&deg; C. to 70&deg; C. The ratio of incorporation of the sliding property-imparting agent is properly in the range of 4 to 10% by weight when the matrix resin is a polyamide-based resin or 4 to 20% by weight when the matrix resin is a thermoplastic resin other than the polyamide-based resin, respectively based on the total weight of the resin and the reinforcing fibers.

Slider formed of fiber-reinforced thermoplastic resin

Disclosed is a recyclable slide fastener having substantially all the component parts thereof made of the same type of synthetic resin material. In the fundamental embodiment of the slide fastener having a pair of fastener tapes and coupling elements fixed to the longitudinal edges of the fastener tapes, they are made of a synthetic resin material of the same type selected from the group consisting of a polyamide resin, a polyester resin, a polyolefin resin, and a vinyl chloride resin. When the slide fastener comprises sewing threads for the fixation of the coupling elements to the fastener tapes and/or core cords extended as inserted through the individual coupling elements, they are made of the same type of synthetic resin as the fastener tapes and the coupling elements. In the slide fastener of the type having upper and lower stop members provided respectively at the upper and lower ends of the rows of coupling elements or the open-link type slide fastener which has a pin-and-box separator and a pair of reinforcing sheet-like members fixed to the lower end portions of the fastener tapes, they are made of the same type of synthetic resin material as the other component parts mentioned above. Preferably the slider is also made of the same type of synthetic resin material as the other component parts mentioned above.

Slide fastener made of synthetic resin

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Toyama-ken, Japan

Mutsuo Hirota