Method of producing a retro-reflective heat transfer film...

Details Method of producing a retro-reflective heat transfer film... Method of producing a retro-reflective heat transfer film...

2007-04-03

2007-04-03

Phan, James (Department: 2872)

Optical: systems and elements

Signal reflector

Including a curved refracting surface

C359S540000, C359S541000, C359S900000, C156S325000, C428S423100, C428S423700

Reexamination Certificate

active

11111235

ABSTRACT:
A method of producing a retro-reflective heat transfer film includes heat-joining a PET release film and a transparent TPU sheet; forming a sticky-adhesive layer or a hot melt adhesive layer on the surface of the transparent TPU sheet; fixing glass beads made of beads with a refractive index of 2.2 to the semi-finished sheet; coating a thin film of transparent resin on the surface of the glass beads, and then forming an aluminum vacuum-coating layer on the coated thin film and forming a reflective resin layer transparent, colored or with graphics on the surface of the aluminum vacuum-coating layer and then producing a transfer sheet by forming a transparent hot melt resin layer on the surface of the reflective resin layer of the semi-finished sheet subject.

REFERENCES:
patent: 5510178 (1996-04-01), Olsen et al.
patent: 5620775 (1997-04-01), LaPerre
patent: 5820988 (1998-10-01), Nagaoka

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