Patent ID: 7204159

Claim:
A removing force measuring device for measuring a removing force for a fastening member attached to a fabric; the device comprising: a holding unit for holding the fabric around the fastening member; a restricting unit for restricting the fastening member; and a tensile force measuring unit for pulling at least either one of the restricting unit and the holding unit in a direction in which the restricting unit restricting the fastening member and the holding unit move away from each other while measuring a tensile force, wherein the restricting unit comprises: a die for mounting thereon the fabric with the fastening member attached thereto; and a fabric presser unit for pressing the fabric mounted on the die to the die to hold the fabric together with the die, wherein the die comprises: a frame holding section with a face facing against the fabric presser unit opened and having an accommodating section inside thereof; a mounting base onto which the fastening member is mounted, the mounting base being provided in the accommodating section, a viscoelastic section provided in the accommodating section around the mounting base, and an elastic section laminated on the viscoelastic section in the accommodating section around the mounting base and provided on the side of the fabric presser unit, the elastic section formed with an elastic member made of one of rubber, thermosetting elastomer, and thermoplastic elastomer; and wherein the elastic member is harder than the viscoelastic section.