Ykk Corporation

Teiichi Murayama

Shintaro Ohsugi

Akira Ishibashi

Mamoru Tanaka

Masashi Doi

Yoshihiro Hashizume

This invention relates to a fiber-made surface fastener comprising joining faces each in which a plurality of fiber-made engaging elements are provided on one surface of each flat base fabric. By specifying a structure and composition yarns of the base fabric of the same surface fastener, the ratio (A/B) of an area A of a range in which sound spectrum of a peeling-off sound Fourier-transformed in a range of 100 Hz to 15000 Hz is 100 Hz to 3000 Hz to an area B of a range in which sound spectrum of a peeling-off sound Fourier-transformed in a range of 100 Hz to 15000 Hz is 3000 Hz to 15000 Hz is 0.4 or more. Consequently, tone of a sound generated when the surface fastener is peeled off and when the surface fastener attached on a product is peeled off is shifted to a low tone side so as to reduce an uncomfortable sound to a lower tone thereby reducing a feeling of discomfort.

Fiber-made surface fastener for reducing unpleasant noise at peeling-off and product provided therewith

A silent surface fastener comprises a base part (), a plurality of engaging elements () raised from the base part, and a vibration-damping material layer () disposed on the back surface of the base part. According to one preferred embodiment, the vibration-damping material layer is disposed on the back surface of the base part through the medium of a bonding layer. The vibration-damping material layer is desired to have a loss tangent (tan&#x3b4;) at &#x2212;40 to 40&#xb0; C. of 0.05-2.5 and a thickness of 0.3-10 mm. According to the other preferred embodiment, the base part is made from a woven or knitted base fabric, the plurality of engaging elements are made of a monofilament, and the fineness of the monofilament is 100-500 T (deciTex).

Silent surface fastener

A surface fastener and a product attached with the same surface fastener, having a structure for reducing a sound generated upon separation of a surface fastener member itself and capable of reducing a sound generated upon separation of the product attached with the same surface fastener. A sheet material is attached to a rear surface of a flat base material of a surface fastener member comprising an engaging-element-formation region having multiple engaging elements on a front surface of the flat base material and an engaging-element non-formation region having no engaging elements or comprising a sewing region and a non-sewing region. The sheet material has apparent density of 0.5 g/cmor less at least in a region corresponding to the engaging-element-formation region or the non-sewing region as sound transmission restricting means, or has at least one through hole as the sound transmission restricting means. Further, the apparent density of the flat base material is set to 0.5 g/cm.

Noiseless surface fastener member, noiseless surface fastener combined with the noiseless surface fastener member and product attached with the same noiseless surface fastener member or the same noiseless surface fastener

Growing community of inventors

Toyama-ken, Japan

Teiichi Murayama