LED curing during vacuum lamination process
A laminating machine includes UV curing elements within the process chamber to cure a UV curable adhesive in a laminating stack while being heated in an autoclave. In an automated process, the laminating machine applies pressure to the stack for pressure sensitive adhesion, then autoclave heating and simultaneous UV curing. The UV curing elements are disposed in the body of the process chamber, the lid of the process chamber, or a separate appliance. The appliance can be releasably attached to the process chamber body or lid. The laminating machine is programmed for specific autoclave and UV exposure profiles specific to the UV curable adhesives being used.
1. A method for laminating a substrate comprising:
applying an optically clear ultraviolet (UV) curable adhesive to a first substrate to form a laminating stack;
applying a second substrate layer to the laminating stack;
applying a linear force to the first substrate via an inflatable membrane within a process chamber;
heating the laminating stack;
exposing the laminating stack to UV light to cure the UV curable adhesive while heating; and
venting the process chamber while continually exposing the laminating stack to UV light.
2. The method of claim 1 , further comprising applying at least one of a liquid crystal display (LCD) element or Organic Light Emitting Diode (OLED) element between the UV curable adhesive and second substrate layer.
3. The method of claim 2 , further comprising applying a second optically clear UV curable adhesive layer between the first substrate and the at least one of a liquid crystal display (LCD) element or Organic Light Emitting Diode (OLED) element.
4. The method of claim 3 , further comprising applying autoclave type pressure to the laminating stack during UV exposure.
5. The method of claim 1 , further comprising applying pressure to the laminating stack during UV exposure.
6. The method of claim 1 , further comprising:
placing the laminating stack under a vacuum;
applying pressure to the laminating stack;
retaining the laminating stack in the vacuum, under autoclave type pressure, for a defined waiting period with heat;
cooling the laminating stack while continuing UV exposure.