Plastic foil for hot leaf stamping and method for forming

• US 5,674,580 A
• Filed: 01/30/1995
• Issued: 10/07/1997
• Est. Priority Date: 04/04/1994
• Status: Expired due to Fees

• Current Assignee: National City Bank (The PNC Financial Services Group, Inc.)
• Original Assignee: NovaVision
• Inventors: Boswell, David R.
• Primary Examiner(s): KILIMAN, LESZEK B
• Application Number:
  US08/381,095
• Time in Patent Office: 981 Days
• Field of Search: 428/216, 428/41, 428/42, 428/458, 428/4.63, 428/464, 428/480, 428/484, 428/522, 428/40.9, 428/42.3, 428/41.4
• US Class Current: 428/40.9
• CPC Class Codes: B29C 59/046 for layered or coated substantially flat surfaces
• CPC Class Codes: B29D 11/0073 Optical laminates
• CPC Class Codes: B29L 2017/00 Carriers for sound or information
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 2309/02 Temperature
• CPC Class Codes: B32B 2425/00 Cards, e.g. identity cards, credit cards
• CPC Class Codes: B32B 2429/00 Carriers for sound or information
• CPC Class Codes: B32B 37/22 involving the assembly of both discrete and continuous layers
• CPC Class Codes: B32B 38/00 Ancillary operations in connection with laminating processes
• CPC Class Codes: B32B 38/06 Embossing
• CPC Class Codes: B32B 38/1841 during laying up
• CPC Class Codes: B32B 7/06 permitting easy separation
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B41M 1/22 Metallic printing; Printing with powdered inks
• CPC Class Codes: B41M 1/24 combined with embossing printing machines for carrying out printing operations combined with embossing B41F19/02
• CPC Class Codes: B41M 3/14 Security printing securities B42D25/29
• CPC Class Codes: B41M 7/0027 using protective coatings or layers by lamination or by fusion of the coatings or layers
• CPC Class Codes: B42D 25/328 Diffraction gratings; Holograms
• CPC Class Codes: B44C 1/1729 Hot stamping techniques
• CPC Class Codes: G03H 1/0244 Surface relief holograms replicating hologram without interference recording G03H1/0276
• CPC Class Codes: G03H 1/0252 : Laminate comprising a hologram layer
• CPC Class Codes: G03H 1/028 : by embossing
• CPC Class Codes: G03H 2227/04 : Production line for mass production
• CPC Class Codes: G03H 2240/55 : Thickness
• CPC Class Codes: G03H 2250/10 : arranged to be transferred onto a carrier body
• CPC Class Codes: G03H 2250/12 : Special arrangement of layers
• CPC Class Codes: G03H 2250/40 : Printed information overlapped with the hologram
• CPC Class Codes: H05K 3/046 : by selective transfer or selective detachment of a conductive layer
• CPC Class Codes: Y10S 428/913 : Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 156/1041 : Subsequent to lamination
• CPC Class Codes: Y10T 428/1338 : Elemental metal containing
• CPC Class Codes: Y10T 428/1438 : Metal containing
• CPC Class Codes: Y10T 428/1443 : Aluminum
• CPC Class Codes: Y10T 428/1457 : Silicon
• CPC Class Codes: Y10T 428/24802 : Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24942 : including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/24975 : No layer or component greater than 5 mils thick
• CPC Class Codes: Y10T 428/263 : Coating layer not in excess of 5 mils thick or equivalent
• CPC Class Codes: Y10T 428/265 : 1 mil or less
• CPC Class Codes: Y10T 428/2804 : Next to metal
• CPC Class Codes: Y10T 428/2813 : Heat or solvent activated or sealable
• CPC Class Codes: Y10T 428/2817 : Heat sealable
• CPC Class Codes: Y10T 428/2826 : Synthetic resin or polymer
• CPC Class Codes: Y10T 428/31504 : Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31663 : As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31667 : Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31678 : Of metal
• CPC Class Codes: Y10T 428/31681 : Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
• CPC Class Codes: Y10T 428/31692 : Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31696 : Including polyene monomers [e.g., butadiene, etc.]
• CPC Class Codes: Y10T 428/31699 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31703 : Next to cellulosic
• CPC Class Codes: Y10T 428/31714 : Next to natural gum, natural oil, rosin, lac or wax
• CPC Class Codes: Y10T 428/31786 : Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31801 : Of wax or waxy material
• CPC Class Codes: Y10T 428/31935 : Ester, halide or nitrile of addition polymer

Abstract

A plastic foil for hot leaf stamping includes a layer of metal having a thickness in the range of 20 millimicrons to 100 millimicrons, a lacquer coating having a thickness in the range of 0.5 microns to 3 microns and a heat activatible adhesive. The metal layer lacquer coating and heat activatible adhesive are caused to be adhered to the substrate forming the final article during a stamping operation which releases said metal layer, lacquer coating and heat activatible adhesive from a plastic carrier film to which had initially been applied. Methods for forming such foil and for forming a decoration image on a substrate using such foil are also provided.

Claims

1. An article of manufacture comprising:

(a) a plastic film substrate; and

(b) a composite sheet engaged to said substrate and releasable therefrom upon application of heat and pressure, said composite sheet including;

(i) a layer of metal having a thickness in the range of 20 millimicrons to 100 millimicrons facing said plastic substrate,

(ii) a lacquer coating having a thickness in the range of 0.5 micron to 3 microns engaged to said layer of metal, said lacquer coating being a member selected from the group consisting of acrylic, styrene-acrylonitrile polymer, polyester and nitrocellulose, and

(iii) a heat activatible adhesive having a thickness in the range of 0.75 micron to 4 microns;

said composite sheet being adherable to a second substrate upon application of heat and pressure.

2. The combination of claim 1, wherein said layer of metal is aluminum.

3. The article of claim 1 further including a release coating of a wax or siloxane between said layer of metal and said substrate, said release coating having a thickness in the range of 0.025 micron to 1 micron.

4. The combination of claim 1 wherein said release coating is microcrystalline wax or a partially saponified montan wax.

5. The article of claim 2 further including a tie coating between said lacquer coating and said heat activatible adhesive, said tie coating having a thickness in the range of 0.05 micron to 0.2 micron and being a member selected from the group consisting of acrylic, styrene-acrylonitrile polymer, polyester and nitrocellulose.

6. The article of claim 5 further including a release coating of a wax or siloxane between said layer of metal and said substrate, said release coating having a thickness in the range of 01.025 micron and 1 micron.

7. The combination of claim 6 wherein said release coating is microcrystalline wax or a partially saponified montan wax.

8. An article of manufacture comprising:

(a) a plastic film substrate; and

(b) a composite sheet engaged to said plastic film substrate and releasable therefrom upon application of heat and pressure, said composite sheet including;

(i) a release coating of a wax or siloxane between said layer of metal and said substrate having a thickness in the range of 0.025 micron to 1 micron.

(ii) a layer of aluminum having a thickness in the range of 20 millimicrons to 100 millimicrons facing said substrate,

(iii) a lacquer coating having a thickness in the range of 0.5 micron to 3 microns engaged to said layer of metal, said lacquer coating being a member selected from the group consisting of acrylic, styrene-acrylonitrile polymer, polyester and nitrocellulose,

(iv) a tie coating having a thickness in the range of 0.05 micron to 0.2 micron and being a member selected from the group consisting of acrylic, styrene-acrylonitrile polymer, polyester and nitrocellulose, and

(v) a heat activatible adhesive having a thickness in the range of 0.75 micron to 4 microns.