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83results about How to "Satisfactory durability" patented technology

Integral molded surface fastener, and continuous manufacturing method and continuous manufacturing apparatus therefor

An integral molded surface fastener having minute and peculiar engaging elements, which engage with minute, thickly wooded fiber piles securely while each engaging element secures appropriate engagement strength, shearing strength and separation strength is provided. Further, texture of a surface of the surface fastener is improved and a height of the engaging elements protruded from a surface of a substrate is lower than a conventional type, thereby preventing the engaging elements from being fallen down by a pressing strength. At the same time, a high engaging ratio with a mating pile piece is secured and a durability required for this kind of fastener is satisfied. Preferably, a desired plasticity and tearing strength of the flat substrate are secured. More specifically, a molded surface fastener having minute engaging elements of thermoplastic resin formed together with a substrate by continuous molding is provided, the engaging elements being hook-type engaging elements each comprised of a single column portion having a substantially cross-shaped section provided by intersection of a first column portion and a second column portion and rectangular thin plate-like engaging heads extended in the shape of wings in opposite directions along the width direction of the first column portion intersecting the second column portion around a top end of the column portion, and having substantially the same width dimension as the width dimension of a top end of the second column portion.
Owner:YKK CORP

Pneumatic tire

An object of the present invention is to provide a pneumatic tire capable of reducing the narrowing of the openings of sipes and increasing ground-contact performance by ensuring the edge effect and the water removal effect thereby increasing on-ice braking performance while providing a satisfactory durability to a sipe-forming blade mounted on the tire manufacturing die. To achieve the above object, each of the sipes formed in a land portion of a tread surface which a pneumatic tire comprises has: a first sipe portion in which a first wide portion having a bottom portion thereof is formed, a second sipe portion in which a second wide portion having a bottom portion thereof and extending in a depth direction from a depth position closer to the tread surface side than the bottom portion of the first wide portion is formed at the side opposite to the first wide portion as viewed in a sipe width direction, the second sipe portion being positioned on the side of the bottom portion of the first sipe portion, and a third sipe portion in which a third wide portion having a bottom portion thereof and extending in a depth direction from a depth position closer to the tread surface side than the bottom portion of the second wide portion is formed at the same side as the first wide portion as viewed in a sipe width direction, the third sipe portion being positioned on the side of the bottom portion of the second sipe portion.
Owner:TOYO TIRE & RUBBER CO LTD
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