Abstract: A cutting die includes two plastic templates detachably coupled to each other and having patterns formed thereon. At least one of the patterns is provided with a cutting portion for allowing the cutting operation to be performed while imprinting a desired pattern by folding the two plastic templates relative to each other, thereby dispensing with the cutting step otherwise performed after the pattern is imprinted.

Abstract: Provided is a press-fitting die including two removable templates each having two opposing surfaces (front and back) with molds provided thereon, respectively. A first pattern is impressed with the templates pivoted into contact with each other under user-applied pressure in a front-to-front manner with respect to the templates. Likewise, after turning each of the removable templates over, a second pattern is impressed with the templates pivoted into contact with each other under user-applied pressure in a back-to-back manner with respect to the templates. Hence, two different patterns are impressed using a single press-fitting die, thereby reducing the number of press-fitting dies required to emboss a number of patterns, thus reducing costs incurred in impressing patterns.

Abstract: A method of forming a knife mold by etching once is provided. The method includes: providing a metal board; forming two corrosion-resistant photoresist layers on the metal board, and exposing and developing the corrosion-resistant photoresist layers, to form patterned lines on the metal board; spraying an etchant toward the metal board to etch the surface thereof, so as to form the blade; and removing the corrosion-resistant photoresist layers. The blade thus formed requires no further grinding or polishing and need not be etched a second time. The knife mold thus formed is well-defined and has a reduced knife edge tolerance and an increased conforming rate.