HIGHLY REFLECTIVE THERMOPLASTIC BODIES FOR INFRARED, VISIBLE OR ULTRAVIOLET LIGHT

• US 3,711,176 A
• Filed: 01/14/1971
• Issued: 01/16/1973
• Est. Priority Date: 01/14/1971
• Status: Expired due to Term

• Current Assignee: Turner Alfrey Jr, Walter J. Schrenk
• Original Assignee: Turner Alfrey Jr, Walter J. Schrenk
• Inventors: Alfrey, Turner Jr., Schrenk, Walter J.
• Primary Examiner(s): Schonberg, David
• Assistant Examiner(s): Kusmer, Toby H.
• Application Number:
  US05/106,459
• Time in Patent Office: 733 Days
• Field of Search: 350/1,163-166 117/33.3,72,159 161/2,1,408,409 96/84 99/174
• US Class Current: 359/359
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10339 Specific parts of the laminated safety glass or glazing being colored or tinted tinted glass sheet B32B17/1011; tinted interlayer B32B17/10651
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 7/023 Optical properties
• CPC Class Codes: B44F 1/04 after passage through surface layers, e.g. pictures with mirrors on the back
• CPC Class Codes: G02B 5/287 comprising at least one layer of organic material

Abstract

Highly reflective colored plastic film is prepared from transparent plastics having no pigment or inorganic material by forming the film from a number of layers of different thermoplastic materials which differ in refractive index and the layer thicknesses are from about 0.05 micron to about one micron.

Claims

2. The body of claim 1 having a reflective spectrum approaching that of a C color.

3. The body of claim 1 wherein the body has a metallic appearance.

4. The body of claim 1 whereby the layers of the first and second material vary in thickness.

5. The body of claim 1 wherein the layers of the second material are arranged in a generally increasing thickness away from the first surface.

6. The body of claim 1 wherein the plurality of layers are varied in thickness by stretching.

7. The body of claim 6 wherein the materials are elastomeric in nature.

8. The body of claim 1 wherein the first surface is adhered to a glass sheet.

9. The body of claim 8 having a second surface adhered to a glass sheet.

10. The body of claim 1 wherein the body has the form of a film and the film encloses a comestible.

11. The body of claim 10 wherein the comestible is a meat.

12. The body of claim 1 wherein the major reflection is in the infrared region.

13. The body of claim 12 wherein the first surface is adhered to a substrate.

14. The body of claim 13 wherein the substrate is paper.

15. A highly reflective synthetic resinous thermoplastic film of at least first and second diverse transparent thermoplastic materials, the body having at least a first surface, the body comprising at least a total of fifty synthetic resinous thermoplastic layers of the first and second materials, each of the layers being transparent to at least infrared, visible or ultraviolet light, wherein the adjacent layers differ from each other in refractive index by at least 0.05 and the thickness of the layers is from about 0.05 micron to about one micron and the thickness of at least a portion of the first layer increases in a direction away from the first surface and the reflection spectRum of the layered film reaches a value of at least 40 percent within the region of infrared, visible or ultraviolet light, and the film is variable in thickness by stretching.

16. The film of claim 15 wherein the components are elastomeric in nature.