Coating processes – Transfer or copy sheet making – Decal or embossing foil type
Reexamination Certificate
1999-12-22
2001-12-25
Beck, Shrive P. (Department: 1762)
Coating processes
Transfer or copy sheet making
Decal or embossing foil type
C427S146000, C427S147000, C427S150000, C427S151000, C427S152000, C427S163400, C427S189000, C427S191000
Reexamination Certificate
active
06333070
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing on a flexible film reflecting images which can be hot-transferred to a plurality of different materials.
More specifically, the invention provides a method for producing on flexible films a plurality of different images, in particular reflecting images, which images can be hot-transferred to several different materials such as: polypropylene, acrylonitrile butadiene styrene (PP-ABS), polyethylene (PEA), polyurethane (PU), polystyrene (PS), and polyamide 6 (PA6, also known as Nylon 6), rubber, synthetic and natural fabrics, leather and metal materials and the like.
SUMMARY OF THE INVENTION
Thus, the aim of the present invention is to provide a method for producing on flexible films reflecting images, which images can be hot transferred onto a of different material, in particular, though not exclusively, on plastics materials.
Within the scope of the above aim, a main object of the present invention is to provide such a method specifically designed for making said reflecting images in a very simple and inexpensive manner.
Yet another object of the present invention is to provide such a reflecting image making method which is very reliable and safe in operation.
According to one aspect of the present invention, the above mentioned aim and objects, as well as yet other objects, which will become more, apparent hereinafter, are achieved by a method for producing on a flexible film reflecting images, which can be hot-transferred onto a different material, said method being characterized by the feature of the main claim.
More specifically the invention provides a method for reproducing on a flexible film reflecting images, which can be hot transferred to a different material, said method comprising a first processing step in which a polyester film is processed by an aromatic solution of a thermoplastic resin, a second processing step in which on said film a plurality of glass beads, in an adjoining relationship are deposited, a resin priming processing step for allowing said glass beads to be retained in place, a vinylchloride-vinylacetate resin solution in an aromatic solvent containing a metal powder having high mirror-like properties is applied to allow said beads to refract light, and a printing step in which desired regions are printed in colors for providing a desired image, as well as a further leveling step causing the printed product to have a desired thickness, and a finishing processing step of using a thermotransferring solution in order to provide the printed image with the capability of being thermally transferred under pressure onto said materials.
According to a preferred embodiment of the present invention, the first polyester film processing step is carried out with a thermoplastic resin including a styrene-isoprene copolymer having a styrene contents of 15%, which is spread at 34 msh and contemporaneously stabilized at 50° C. by hot air.
According to another preferred embodiment of the present invention, the glass beads are deposited at 77 msh and have a reflecting index of 1.9 with a diameter from 40 to 60 microns.
The priming processing step is carried out by using a vinylchloride-vinylacetate resin in an aromatic solution with a deposition at 150 msh and with a thermosealing at 50° C. in forced hot air.
REFERENCES:
patent: 3172942 (1965-03-01), Berg
patent: 4075049 (1978-02-01), Wood
patent: 4359491 (1982-11-01), Lai-Chun
patent: 5763000 (1998-06-01), Hedblom
patent: 6159537 (2000-12-01), Crandall
Beck Shrive P.
Illinois Tool Works Inc.
Kolb Jennifer
Lowe Hauptman & Gilman & Berner LLP
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