FORMABLE FUSED POLYMER PANELS CONTAINING LIGHT REFRACTING FILMS

• US 20100265581A1
• Filed: 02/25/2008
• Published: 10/21/2010
• Est. Priority Date: 02/26/2007
• Status: Active Grant

• Current Assignee: 3Form (Hunter Douglas N.V.)
• Original Assignee: 3Form (Hunter Douglas N.V.)
• Inventors: Willham, John E. C., Langan, Wendy E. K.
• Granted Patent: US 7,940,459 B2
• Time in Patent Office: Days
• US Class Current: 359/487
• CPC Class Codes: G02B 5/285 comprising deposited thin solid films G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361
• CPC Class Codes: Y10T 156/1028 by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
• CPC Class Codes: Y10T 156/1041 Subsequent to lamination

Abstract

A dichroic, light refracting resin panel comprises one or more dichroic/refracting films that have been embedded and/or laminated between a plurality of resin substrates, such as copolyester, polycarbonate, and/or acrylic substrates. The dichroic resin panel can be manufactured with a variety of different materials, and with autoclave or hot press methods in a manner that ensures structural and aesthetic integrity. Specifically, a dichroic resin panel in accordance with the present invention can be created in such a way as to avoid delamination despite a variety of end-uses and formations (e.g., curved panel, embossed/textured surfaces). In addition, the dichroic resin panels can be handled, transported, and installed in a variety of exterior or interior applications, even where certain building code requirements may be relatively stringent. The dichroic resin panels can be used in a variety of structural and/or aesthetic applications.

Claims

1. A dichroic resin panel configured with sufficient aesthetic and structural properties for use as a building material in an architectural design environment, the dichroic resin panel comprising:

a substantially translucent first resin substrate layer;

a substantially translucent second resin substrate layer that corresponds with the first resin layer; and

one or more light refracting film layers laminated between the first and second resin layers, wherein the one or more light refracting film layers conform to the first and second resin layers without material defect;

wherein the combination is at least partially malleable after a lamination process.

2. The dichroic resin panel as recited in claim 1, wherein the form of the translucent first and second resin layers is curved.

3. The dichroic resin panel as recited in claim 1, further comprising one or more tie layers positioned between the first and second resin layers and about each of one or more the light refracting film layers.

4. The dichroic resin panel as recited in claim 2, wherein each of the one or more tie layers comprise melted or softened TPU between the one or more light refracting film layers and the first and second resin substrate layers.

5. The dichroic resin panel as recited in claim 2, wherein each of the one or more tie layers comprise softened or melted ethylene-vinyl acetate, or ethyl-methyl acrylate between the one or more light refracting film layers and the first and second resin substrate layers.

6. The dichroic resin panel as recited in claim 2, wherein the one or more tie layers are between about 0.005 and about 0.125 inches thick.

7. The dichroic resin panel as recited in claim 1, wherein one or both of the first or second resin layers is embossed or textured on an outer surface thereof.

8. The dichroic resin panel as recited in claim 7, further comprising one or more additional, non-textured or non-embossed resin substrate layers embedded between the first and second substrate layers.

9. The dichroic resin panel as recited in claim 8, wherein the one or more additional resin substrates are thinner in dimension than the first and second resin substrates.

10. The dichroic resin panel as recited in claim 8, wherein each resin substrate layer in the dichroic resin panel comprises a copolyester material, a polycarbonate material, or combinations thereof.

11. The dichroic resin panel as recited in claim 8, wherein each resin substrate layer in the dichroic resin panel comprises a translucent thermoplastic material including one or more of a polycarbonate styrene material, a polyvinyl chloride material, a polyurethane material, or combinations thereof.

12. A method of manufacturing a post-formable, dichroic resin panel comprising a light refracting film, wherein the dichroic resin panel can be modified or formed during or after lamination without cracking, wrinkling, or otherwise distorting the refracting film layer during the manufacturing process, the method comprising the steps of:

preparing a dichroic laminate assembly comprising one or more light refracting films and one or more tie layers interposed between a plurality of resin substrates;

heating the dichroic laminate assembly in a lamination apparatus to a temperature of no more than about 250°

F. to about 260°

F., wherein the one or more tie layers soften or melt between the plurality of resin substrates;

cooling the dichroic laminate assembly, wherein the dichroic laminate assembly comprises a substantially unitary resin panel; and

removing the unitary resin panel from the lamination apparatus.

13. The method as recited in claim 12, wherein the lamination apparatus comprises an autoclave, the method further comprising:

raising the autoclave to a final temperature of between 210°

F. to about 250°

F.; and

raising the pressure of the autoclave to between about 110 psi to about 170 psi.

14. The method as recited in claim 13, further comprising the steps for:

positioning one or more dichroic laminate assemblies in corresponding one or more vacuum bags; and

sealing the one or more vacuum bags.

15. The method as recited in claim 14, further comprising the steps of:

cooling the unitary resin panel in the autoclave; and

forming the unitary resin panel with one or more curved shapes in the autoclave.

16. The method as recited in claim 12, wherein the lamination apparatus comprises at least a hot press and a cold press, wherein the step for heating the dichroic laminate assembly is performed in the hot press at a temperature of between about 250°

F. to about 260°

F. using a pressure of between about 70 psi to about 150 psi.

17. The method as recited in claim 16, wherein the step for cooling the dichroic laminate assembly further comprises applying one or more texture or embossing papers to one or more outer surfaces of the dichroic laminate assembly.

18. The method as recited in claim 12, wherein at least two of the plurality of resin substrates in the dichroic laminate assembly comprise a textured or embossed surface that faces away from the one or more light refracting films.

19. The method as recited in claim 18, further comprising positioning one or more additional resin substrates between the at least two resin substrates, wherein the one or more additional resin substrates are free of textured or embossed surfaces.

20. A dichroic laminate assembly configured so that, when subject to a lamination temperature of up to about 250°

F. to about 260°

F. in an autoclave or hot press, bonds one or more resin substrates to a dichroic film in a manner that preserve the integrity of the dichroic film and prevents the resulting dichroic resin panel from delamination, comprising;

a plurality of resin substrates comprising one of a copolyester material, a polycarbonate material, or a mixture thereof;

one or more light refracting films positioned between the plurality of resin substrates in a stack formation; and

a plurality of TPU tie layers positioned between the plurality of resin substrates in the stack formation;

wherein;

each TPU tie layer is positioned against at least one surface of each of the resin substrates; and

each of the one or more light refracting films is positioned adjacent two TPU tie layers on opposing sides.