Molded surface fastener, method for producing molded surface fastener and method for producing cushion body

Abstract

This molded surface fastener (1, 1a, 1b, 2, 3, 4, 5, 6, 7) comprises a plurality of surface fastener portions (10, 80, 100, 110) and a coupling member (20, 20a, 85, 115, 125, 135, 145) made of a resilient body that connects the surface fastener portions (10, 80, 100, 110). The coupling member (20, 20a, 85, 115, 125, 135, 145) comprises a pair of lateral wall coupling portions (21, 21a, 86, 116, 126, 136, 146) which is disposed in succession along a longitudinal direction on each side of an engaging element area (18) and which connects the surface fastener portions (10, 80, 100, 110). According to the present invention, when molding and integrating the molded surface fastener (1, 1a, 1b, 2, 3, 4, 5, 6, 7) with the cushion body, penetration of resin materials into the engaging element area (18) of the surface fastener portions (10, 80, 100, 110) is prevented so that a desired fastening strength can be stably ensured at the engaging element area (18).

Description

technical field [0001] The present invention relates to a molded surface fastener that is integrated on the surface of a foam when molding a foam and a method for manufacturing the same, and more particularly relates to a plurality of surface fasteners connected by a connecting member made of an elastic body, and, in A molded surface fastener that prevents intrusion of a foamed resin material into an engaging element forming region of a surface fastener portion during foam molding, and a method for producing the same. Background technique [0002] Seats for automobiles and trains, various sofas, and office seats, etc., are mostly made of fiber fabrics, natural or Constructed of surface materials such as synthetic leather. In order to maintain a sitting posture that is not tiring even when sitting for a long time, cushioning bodies used in such various seats may have a curved surface made of uneven shapes satisfying ergonomics. [0003] Also, when covering the surface of th...

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Problems solved by technology

[0037] However, in such a molded surface fastener 160 of Patent Document 2, for example, when the foamed resin material has an extremely low viscosity, the foamed resin material is blown from an oblique direction with respect to the molded surface fastener 160, In the case of direct collision with the vertical protective wall portion 163 of the shaped surface fastener 160, even if the flow resistance of the foamed resin material is increased by the vertical protective wall portion 163, there is a possibility that the foamed resin material reaches and enters the engaging element region 165. In the case, there is a possibility that the predetermined desired clamping force cannot be obtained in the clamping element area 165

[0038] In addition, the molded surface fastener 160 of Patent Document 2 is configured to be bendable in the front and back directions and in the width direction as described above by bending the connection portion 162 connecting the surface and back portions 161 . The buckle portion 161 itself is difficult to bend, and each hook and loop portion 161 cannot be properly bent.

[0039] For this reason, in the mold for forming the shock absorber, for example, in the case where the top surface of the convex portion of the shaped surface fastener 160 by suction and fixed is greatly deflected in the front-back direction, although the entire molded surface fastener 160 can be formed along this The ridge portion is curved, but there is a case where a gap is formed between the front and rear end portions of each hook and loop portion 161 and the top surface of the ridge portion.

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