Laser induced transfer film

• Main Authors: LEE KWANG HOI, LEE HYE RI, PARK JUN WOO, EOM SANG YEOL
• Format: Patent
• Language: English; Korean
• Published: 09.12.2020
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

Disclosed is a laser transfer film. The disclosed laser transfer film comprises a base layer, a thermally expandable light absorbing layer, and an adhesive layer in this order, and the thermally expandable light absorbing layer has light transmittance of 70% or more at a wavelength of 550 nm, and absorbs light in a wavelength range of 780 to 1,500 nm. A difference between visible light transmittance and near-infrared transmittance represented by the following Equation 1 is 5 to 90%. [Equation 1] Difference between visible light transmittance and near infrared transmittance = light transmittance (@550 nm) - light transmittance (@1,064 nm). 레이저 전사 필름이 개시된다. 개시된 레이저 전사 필름은 기재층, 열팽창성 광흡수층 및 점착층을 이 순서대로 포함하고, 상기 열팽창성 광흡수층은 550nm의 파장에서 70% 이상의 광투과율을 가지고, 780~1,500nm의 파장 영역의 빛을 흡수하고, 하기 수학식 1로 표시되는 가시광선 투과율과 근적외선 투과율 간의 차이가 5~90%이다: [수학식 1] 가시광선 투과율과 근적외선 투과율 간의 차이 = 광투과율(@550nm) - 광투과율(@1,064nm).