Method for laminating a composite device

• US 6,033,518 A
• Filed: 03/23/1998
• Issued: 03/07/2000
• Est. Priority Date: 03/23/1998
• Status: Expired due to Term

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Inventors: Backfisch, David L.
• Primary Examiner(s): STEMMER, DANIEL J
• Application Number:
  US09/046,384
• Time in Patent Office: 715 Days
• Field of Search: 156/295, 156/306.9, 156/307.7, 156/292, 359/265
• US Class Current: 156/295
• CPC Class Codes: B29D 11/0073 Optical laminates
• CPC Class Codes: B32B 2307/40 having particular optical properties light or UV resistant B32B2307/71
• CPC Class Codes: B32B 2309/10 linear, e.g. length, distance, width
• CPC Class Codes: B32B 37/1054 Regulating the dimensions of the laminate, e.g. by adjusting the nip or platen gap
• CPC Class Codes: G02F 1/161 Gaskets; Spacers; Sealing of cells; Filling or closing of cells
• CPC Class Codes: G02F 2001/1502 complementary cell

Abstract

A method for preparing laminated composites such as laminated electrochromic devices is disclosed. The method involves placing a plurality of shims between first and second substrates prior to lamination using a laminating adhesive. The shims maintain uniform spacing during lamination. Devices prepared via the instant method are also disclosed.

Claims

1. A method for laminating first and second parts of an electrooptic device, said parts having first and second mating surfaces, respectively, which method comprises:

a) placing a plurality of discrete shims between said first and second mating surfaces along the peripheral edges of said mating surfaces;

b) placing an effective amount of a curable, non-solid adhesive composition between said first and second mating surfaces;

c) bringing said first and second mating surfaces together until they contact said shims, thereby spreading said curable, non-solid adhesive composition between said parts; and

d) curing said adhesive composition, thereby bonding said parts to each other.

2. The method of claim 1, wherein said first and second parts are optical lenses.

3. The method of claim 2, wherein said optical lenses are ophthalmic lenses.

4. The method of claim 1, wherein said curable, non-solid adhesive composition forms an ion-conducting polymer interlayer.

5. The method of claim 3, wherein said curable, non-solid adhesive composition forms an ion-conducting polymer interlayer.

6. The method of claim 1, wherein said shims are prepared from said curable, non-solid adhesive composition.

7. The method of claim 3, wherein said shims are prepared from said curable, non-solid adhesive composition.

8. The method of claim 1, wherein said shims are irregularly shaped.

9. The method of claim 3, wherein said shims are irregularly shaped.

10. The method of claim 1, wherein said first and second parts are complimentary electrochromic half cells and wherein said curable, non-solid adhesive composition forms an ion-conducting polymer interlayer between said first and second parts.

11. The method of claim 10, wherein said shims are prepared from said curable, non-solid adhesive composition.

12. The method of claim 10, wherein about 3 to about 12 shims are used.

13. A method for preparing a laminated electrooptic device comprising first and second substrates having first and second mating surfaces, respectively, and an adhesive interlayer of substantially uniform thickness, which method comprises:

a) placing a plurality of discrete shims along the periphery of at least one of said mating surfaces;

b) adding an effective amount of a non-solid adhesive composition to at least one of said mating surfaces;

c) bringing said first and second mating surfaces together until said mating surfaces are uniformly spaced by said shims; and

d) curing said adhesive, thereby bonding said substrates to each other.

14. The method of claim 13, wherein said non-solid adhesive composition forms an ion-conducting polymer interlayer.

15. The method of claim 13, wherein said shims are prepared from said non-solid adhesive composition.

16. The method of claim 13, wherein said shims are irregularly shaped.

17. The method of claim 16, wherein said shims are triangular.

18. The method of claim 13, wherein said shims are about 0.025 to about 0.625 mm thick.

19. The method of claim 13, wherein a suspension lamination technique is used.