System and method for manipulating color changing materials

Patent metadata

Field	Value
Publication number	US-9581838-B2
Application number	US-201514928315-A
Country	US
Kind code	B2
Filing date	Oct 30, 2015
Priority date	Mar 24, 2014
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

Systems and methods of manipulating a color displayed by an article of wear comprising iron oxide colloidal nanocrystals arranged within chains are described. Steps may include forming the article of wear from a raw material that include the chains of nanocrystals, applying a magnetic field to the raw material, applying energy to at least some of the chains of nanocrystals to soften materials within the raw material immediately surrounding the chains of nanocrystals to which the energy is applied, adjusting a strength of the magnetic field to control the color displayed by the raw material, removing the energy to allow the materials within the raw material immediately surrounding the chains of nanocrystals to harden and fix a location of the nanocrystals within the chains, and removing the magnetic field.

First claim

That which is claimed is:

1. A method of manipulating a color displayed by an article of wear comprising iron oxide colloidal nanocrystals arranged within chains, the method comprising:
(a) applying a magnetic field to the article of wear comprising at least one raw material, wherein the at least one raw material comprises the chains of nanocrystals;
(b) applying energy to at least some of the chains of nanocrystals to soften materials within the at least one raw material immediately surrounding the chains of nanocrystals to which the energy is applied;
(c) removing the energy to allow the materials within the at least one raw material immediately surrounding the chains of nanocrystals to harden and fix a location of the nanocrystals within the chains; and
(d) removing the magnetic field.

2. The method of claim 1 , wherein the energy and the magnetic field are applied to the at least one raw material during formation of the article of wear.

3. The method of claim 1 , wherein the energy and the magnetic field are applied to the at least one raw material prior to formation of the article of wear.

4. The method of claim 1 , further comprising:
unrolling the at least one raw material proximate a first end of a platform, wherein the platform comprises a substantially flat surface and a gap therein;
positioning an unrolled portion of the at least one raw material adjacent the surface of the platform and the gap therein; and
re-rolling the at least one raw material proximate a second end of the platform.

5. The method of claim 4 , wherein the energy and the magnetic field are applied to a portion of the at least one raw material positioned proximate the gap.

6. The method of claim 1 , wherein the at least one raw material comprises a yarn or thread, and the method further comprises applying the energy and the magnetic field to the at least one raw material as the at least one raw material is being fed into a weaving loom or knitting machine.

7. A method of manipulating a color displayed by a plurality of articles of wear, each article of wear comprising iron oxide colloidal nanocrystals arranged within chains, the method comprising:
(a) applying a magnetic field to the plurality of articles of wear;
(b) applying energy to at least some of the chains of nanocrystals to soften materials within the plurality of articles of wear immediately surrounding the chains of nanocrystals to which the energy is applied;
(c) removing the energy to allow the materials within the plurality of articles of wear immediately surrounding the chains of nanocrystals to harden and fix a location of the nanocrystals within the chains; and
(d) removing the magnetic field.

8. The method of claim 7 , further comprising:
inserting the plurality of articles of wear within a central opening of an activation tunnel; and
applying the magnetic field via a plurality of solenoids substantially surrounding the activation tunnel.

9. The method of claim 7 , further comprising inserting the plurality of articles of wear within a drum of an industrial dryer.

10. A method of manipulating a color displayed by an article of wear comprising iron oxide colloidal nanocrystals arranged within chains, the method comprising:
(a) applying a magnetic field to the article of wear;
(b) applying energy to at least some of the chains of nanocrystals to soften materials within the article of wear immediately surrounding the chains of nanocrystals to which the energy is applied;
(c) removing the energy to allow the materials within the article of wear immediately surrounding the chains of nanocrystals to harden and fix a location of the nanocrystals within the chains; and
(d) removing the magnetic field.

11. The method of claim 10 , further comprising:
placing the article of wear on a platform, wherein the magnetic field is concentrated and oriented perpendicular to the platform; and
applying the energy via a laser controlled by a numerical control device.

12. The method of claim 10 , further comprising placing the article of wear on a metal shoe last, wherein the magnetic field is concentrated and oriented perpendicular to a surface of the metal shoe last.

13. The method of claim 10 , wherein the article of wear comprises a first layer comprising the chains of nanocrystals and at least one additional layer that does not comprise the chains of nanocrystals, further comprising applying the energy via a 95 GHz radiation beam that penetrates the first layer without penetrating the at least one additional layer.

14. The method of claim 1 , further comprising
placing the article of wear on a platform, wherein the magnetic field is concentrated and oriented perpendicular to the platform; and
applying the energy via a laser controlled by a numerical control device.

15. The method of claim 1 , wherein the energy is applied with a laser.

16. The method of claim 1 , wherein the energy source is heat, UV, and/or microwave radiation.

17. The method of claim 7 , wherein the energy is applied with a laser.

18. The method of claim 7 , wherein the energy source is heat, UV, and/or microwave radiation.

19. The method of claim 10 , wherein the energy is applied with a laser.

20. The method of claim 10 , wherein the energy source is heat, UV, and/or microwave radiation.

Assignees

• Adidas Ag

Inventors

• Lussier Michel Reginald Pierre Joseph

Classifications

• G02F1/23

  for the control of the colour (G02F1/03 - G02F1/21 take precedence) · CPC title

• G02F1/092 Primary

  Operation of the cell; Circuit arrangements · CPC title

• G02F1/091 Primary

  based on magneto-absorption or magneto-reflection · CPC title

• G02B1/005

  made of photonic crystals or photonic band gap materials (photonic band-gap structures or photonic lattices in integrated optics G02B6/1225; photonic band-gap structures or photonic lattices in optical fibres G02B6/02295) · CPC title

• B01J13/0047

  containing a metal oxide · CPC title