Hook Structure for Molded Surface Fastener

摘要

A surface fastener molded of synthetic resin, comprising a substrate sheet (2), and a multiplicity of hook elements (3) molded on at least one surface of the substrate sheet (2), each hook element having a hook body having a stem (31a) and a curved portion (31b). Each of the hook elements (3) has a hook body (31) and first and second reinforcing ribs (32, 33) projecting from opposite side surfaces of the hook body (31). The first reinforcing rib (32) is greater in height than the second reinforcing rib (33). In the presence of the first and second reinforcing ribs (32, 33) different in height, compression stresses developed in the hook body (31) are dispersed at two or more points when a companion engaging element is removed off the hook element (3).