METHOD AND DEVICE FOR MEASURING BREADTHWISE STRENGTH OF TAPE

PURPOSE:To measure the strength, by stretching a tape to be measured by a prescribed tension so that the tape is protruded from one edge of the tape contact face of a tape contact member by a prescribed width and by detecting the force which is received by a pressing-in member when the protruded part is pressed in in the direction parallel with the contact face. CONSTITUTION:A tape 11 has one end held by a supporting seat 2 and has the center hooked to a part of a tape contact face 12 of a tape contact member 9 and has the other end held by a clip 13. A tension is given to the tape 11 through a thread 14 by a weight 15 fitted to the clip 13. The tape 11 is hooked to the tape contact face 12 and is protruded from an upper end face 20 of the tape member 9 by a prescribed width (about 1-2mm.). A vertically moving arm 21 is moved vertically by a tape edge weighting equipment 5 consisting of a motor, a reduction device, a rack, a pinion, etc., and the repulsion received from the upper edge of the tape 11 is measured by a detecting end 2 of a stress converter 23 fixed by a coupling rod 22, thus detecting the force received in the breadthwise direction of the tape 11. The change of this repulsion is observed to appreciate the breadthwise strength of the tape.