Patent ID: 6817103
Filing Date: 2004-11-16
Classification: B26D,B32B

Abstract:
A cutting blade (28) constructed by bonding a plate-shape cutting portion (24) to a base metal (26) with an adhesive (30), said cutting blade (28) comprising:a base portion (32) recessed in a backside of said base metal (26) so as to receive said cutting portion (24), a depth of said base portion (32) being less than a thickness of said cutting portion (24); a second base portion (34) recessed in said backside of said base metal (26) by a predetermined width and set to be continuous from said base portion (32), a depth of said second base portion (34) being less than that of said base portion (32); a third base portion (36) recessed in said backside of said cutting portion (24) by a predetermined width and set to a dimension of a depth equal to that of said second base portion (34) in a place aligned with said second base portion (34) when said cutting portion (24) is bonded to said base metal (26); a slit (38) plotted between a rear end part of said cutting portion (24) and a boundary end part where said base portion (32) is transferred to said second base portion (34), an end part of an adhesive layer coated with said adhesive (30) being placed to face said slit (38); and a filler (40) which is filled commonly in said second and third base portions (34) and (36) and fully covers an adhesive layer exposed portion facing said slit (38).