Automated manufacturing processes for producing deformable polymer devices and films

• US 9,553,254 B2
• Filed: 03/01/2012
• Issued: 01/24/2017
• Est. Priority Date: 03/01/2011
• Status: Active Grant

• Current Assignee: Parker Intangibles LLC (Parker-Hannifin Corporation)
• Original Assignee: Parker-Hannifin Corporation
• Inventors: Egron, Francois, Liptawat, Pat, Mei, Junfeng, Mousavi Nazari, Hooman, Quan, Xina, Rosenthal, Marcus A., Sutherland, William D., Weaber, Chris A., White, Luther L. III
• Primary Examiner(s): BANH, DAVID H
• Application Number:
  US14/002,166
• Publication Number:
  US 20140290834A1
• Time in Patent Office: 1,790 Days
• US Class Current: 1/1
• CPC Class Codes: H10N 30/03 Assembling devices that include piezoelectric or electrostrictive parts
• CPC Class Codes: H10N 30/06 Forming electrodes or interconnections, e.g. leads or terminals
• CPC Class Codes: H10N 30/072 by laminating or bonding of piezoelectric or electrostrictive bodies
• CPC Class Codes: H10N 30/098 Forming organic materials
• CPC Class Codes: H10N 30/206 using only longitudinal or thickness displacement, e.g. d33 or d31 type devices

Abstract

A process for producing a patterned deformable polymer film for use in a deformable polymer device is disclosed. The process includes positioning an intermediary layer between a deformable film and a process tooling and printing at least one electrode on the deformable film by depositing an ink to form the at least one electrode on a first surface of the deformable film, wherein the intermediary layer permits release of the deformable film from the process tooling subsequent to the printing process. Films produced by the inventive processes may find use in electroactive polymer devices.

Claims

1. A process for producing a patterned deformable polymer film for use in a deformable polymer device, the process comprising:

supporting a deformable film section such that the deformable film section comprises a supported portion and an unsupported portion;

positioning an intermediary layer between the unsupported portion of the deformable film and a process tooling; and

printing at least one electrode on the unsupported portion of the deformable film by depositing an ink to form the at least one electrode on a first surface of the unsupported portion of the deformable film, wherein the intermediary layer permits release of the unsupported portion of the deformable film from the process tooling subsequent to the printing process.

2. The process according to claim 1, wherein the ink is deposited by one selected from the group consisting of screen printing, pad printing, gravure printing, ink jet printing, flexographic printing and aerosol jet printing.

3. The process according to one of claims 1 or 2, wherein the intermediary layer comprises at least one selected from the group consisting of an engineered surface, a removable liner, a compliant layer and a deformable layer.

4. The process according to claim 3, wherein the engineered surface is a surface selected from the group consisting of a parchment paper, a textured surface, a non-stick surface, screen mesh and a polymer sheet.

5. The process according to claim 3, wherein the deformable layer comprises a foam material.

6. The process according to claim 3, wherein the deformable layer comprises a plurality of cavities, wherein the cavities permit regions of varying pressure during screen printing, and wherein the process further comprises depositing ink at varying levels on the first surface of the deformable film.

7. The process according to claim 1, wherein the deformable polymer film comprises an electroactive polymer film.

8. The process according to claim 1 further comprising:

advancing a deformable film of an elastomeric material from a supply of elastomeric material;

mechanically straining the deformable film to create a first pre-strained film section remaining continuous with the supply of elastomeric material;

depositing ink to create at least a first electrode on a first side of an unsupported portion of the first pre-strained film section, wherein supporting a deformable film section comprises supporting the first pre-strained film section such that the first pre-strained film section comprises a supported portion of the first pre-strained film section and the unsupported portion of the first pre-strained film section;

depositing ink to create at least a second electrode on a second side of the unsupported portion of the first pre-strained film section opposing the first electrode and forming at least one opposing electrode pair to complete at least a first section of electroactive polymeric film; and

collecting the first section of electroactive polymeric film.

9. The process according to claim 8, further comprising:

mechanically straining the deformable film to create a second pre-strained film section remaining continuous with the deformable film;

supporting the second pre-strained film section such that the second pre-strained film section comprises a supported portion and an unsupported portion;

depositing ink to create at least a first electrode on a first side of the unsupported portion of the second pre-strained film section; and

collecting the second section of electroactive polymeric film.

10. The process according to claim 9, further comprising stacking or laminating the first and second sections of electroactive polymeric film together.

11. The process according to claim 8 further comprising applying at least one structural component selected from the group consisting of output bars, frames and flexures.

12. The process according to claim 8, wherein the film of elastomeric material comprises a first and second belt member on respective near and far edges of the film, and wherein each belt member comprises a material having a Young'"'"'s Modulus greater than a Young'"'"'s Modulus of the film.

13. The process according to claim 12, wherein the first and second belt members comprise perforated belt members and wherein perforation rollers are used to mechanically strain the film.

14. The process according to claim 8, wherein the film of elastomeric material is mechanically strained substantially in a direction selected from the group consisting of transverse to the direction of travel of the advancing film, parallel to the direction of travel of the advancing film, equally in transverse and parallel directions, or in an unequal combination of transverse and parallel directions.

15. The process according to claim 8, wherein the film is advanced in a stepwise fashion.

16. The process according to claim 8, wherein collecting the first section of electroactive polymer film comprises winding a plurality of sections of electroactive polymer film to form a roll of electroactive polymer films.

17. The process according to claim 16 further comprising feeding at least two rolls of electroactive polymer films into a lamination station and applying at least one selected from the group consisting of a frame, an output bar, and a flexure to at least the first layer of electroactive polymer films to assemble a multi layered electroactive polymer actuator device.

18. The process according to claim 8, wherein supporting the first pre-strained film section comprises applying a supporting layer to the first pre-strained film section.

19. The process according to claim 1, wherein the deformable film comprises a pre-strained electroactive polymer.

20. The process according to claim 1 wherein the polymer is selected from the group consisting of silicone, polyurethane, acrylate, hydrocarbon rubber, olefin copolymer, polyvinylidene fluoride copolymer, fluoroelastomer, styrenic copolymer, and adhesive elastomer.