US Patent 7404241 Silent surface fastener

A silent surface fastener comprises a base part (2), a plurality of engaging elements (3a, 3b) raised from the base part, and a vibration-damping material layer (10) 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 (tanδ) at −40 to 40° 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).