Roll processing of film

Patent metadata

Field	Value
Publication number	US-2016152518-A1
Application number	US-201414905201-A
Country	US
Kind code	A1
Filing date	Jul 16, 2014
Priority date	Jul 16, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

A method of coating film in a roll. A film is wound into a roll with gaps between the layers of the film in the roll. A fluid is forced through the roll such that the fluid deposits a coating on at least one side of the film.

First claim

1 . A method of processing a film, comprising the steps of:
winding the film into a roll with gaps between layers of the film in the roll; and forcing a fluid through the gaps, wherein the fluid deposits a coating on at least one side of the film.

2 . The method of claim 1 , wherein spacers are positioned near a first edge and near a second edge of the layers of the film such that the spacers provide the gaps between the layers of the film.

3 . The method of claim 2 , wherein the spacers allow fluid to pass axially through the layers of the film.

4 . The method of claim 2 , wherein the spacers have a structured surface.

5 . The method of claim 1 , wherein each gap between the layers of the film is in the range of 5 to 5000 microns.

6 . The method of claim 1 , wherein each gap between the layers of the film is in the range of 10 to 1000 microns.

7 . The method of claim 6 , wherein each gap is in the range of 50 to 250 microns.

8 . The method of claim 1 , wherein the fluid is forced through the gaps from a first edge to a second edge of the film.

9 . The method of claim 1 , wherein the fluid flows spirally or axially through the roll.

10 . The method of claim 1 , wherein the film has a thickness between about 10 and 500 microns.

11 . The method of claim 1 , wherein the fluid is a gas.

12 . The method of claim 1 , wherein the fluid is a liquid or a combination of a liquid and a gas.

13 . The method of claim 1 , wherein the film comprises polymer, glass, metal, ceramic, or a combination thereof.

14 . The method of claim 13 , wherein the film is a glass film.

15 . The method of claim 1 , wherein the film has a Young's modulus of greater than 5 GPa.

16 . The method of claim 15 , wherein the film has a Young's modulus of greater than 20 GPa.

17 . The method of claim 1 , further comprising the steps of positioning the roll inside a flow reactor and forcing a fluid through the flow reactor.

18 . The method of claim 17 , wherein at least 50% of the fluid forced through the flow reactor passes through the gaps between the layers of the film.

19 . The method of claim 18 , wherein at least 80% of the fluid forced through the flow reactor passes through the gaps between the layers of the film.

20 . The method of claim 1 , wherein the fluid deposits a coating on a first surface of the film and on a second surface of the film.

21 . The method of claim 1 , wherein the fluid deposits a coating on a first surface of the film and a second surface of the film is not coated.

22 . The method of claim 1 , wherein the film comprises sapphire.

23 . The method of claim 1 , wherein the coating comprises an organometallic material or a fluorosilane or a combination thereof.

24 . A method of processing film, comprising the steps of:
winding a first film and a second film into a roll with a first gap between a second side of the first film and a first side of the second film and with a second gap between a first side of the first film and a second side of the second film; and forcing a first fluid through the first gap, wherein the first fluid deposits a first coating on the second side of the first film and a second coating on the first side of the second film.

25 . The method of claim 24 , further comprising the step of forcing a second fluid through the second gap, wherein the second fluid deposits a third coating on a second side of the second film and a fourth coating on the first side of the first film.

26 . An article, comprising:
a roll of coated film with gaps between layers of the coated film in the roll, the roll of coated film having an input edge, and a manifold disposed adjacent the input edge, the manifold including a fluid distribution system.

27 . The article of claim 26 , wherein the gaps between the layers of the coated film include a first set of gaps and a second set of gaps different from the first set of gaps and wherein the fluid distribution system includes a first set of channels for distributing fluid to the first set of gaps and a second set of channels, different from the first set of channels, for distributing fluid to the second set of gaps.

28 . The method of claim 1 , wherein the coating comprises inorganic and organic materials.

29 . The method of claim 28 , wherein the coating further comprises fluorosilane.

Assignees

• 3M Innovative Properties Co

Inventors

• Ouderkirk Andrew J
• Kieschke Robert R
• Mcdowell Erin A
• Gabriel Nicholas T
• Johnson Eugene V
• Johnson Kelly S

Classifications

• B05D1/02

  performed by spraying · CPC title

• C03C17/02 Primary

  with glass (C03C17/34, C03C17/44 take precedence) · CPC title

• B05D7/00

  Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials {(coating of foodstuffs A23P20/17, A23P20/15, A23P20/18)} · CPC title

• B05D2252/10

  Applying the material on both sides · CPC title

• C03C17/30

  with silicon-containing compounds · CPC title