Bonding method of a sawtooth cutter and combination of a carton blank and a sawtooth cutter

摘要

An adhesive (6) is applied on a sheet of carton blank (1) to permit a non-metallic saw blade cutter (2) of fusion type to be bonded to the entire length thereof. Then, opposite ends (2c) of the saw blade cutter (2) are subjected to ultrasonic sealing by an ultrasonic born (20). Accordingly, the opposite ends (2c) of the saw blade cutter (2), where adhesion by the adhesive (6) tends to be unstable, can be positively bonded to prevent peeling-off of the blade cutter (2) in use.