Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1990-10-29
1992-09-15
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156286, B32B 3120, C03C 2712
Patent
active
051474859
ABSTRACT:
A method is disclosed for producing superior optically clear laminates having a sheet of semi-rigid material encapsulated in a thermoplastic interlayer between layers of rigid material such as glass. Pre-cooled laminate elements are assembled at reduced temperature, allowing positioning of the sheet of semi-rigid material in the interlayer of the assembly with minimal wrinkling, formation of air bubbles or entrapment of moisture. Thereafter, the laminate assembly is maintained under vacuum for an extended period of time, substantially eliminating wrinkling, air bubbles and moisture from between the laminate elements as well as pre-forming the semi-rigid sheet. Bonding heat and pressure is then applied, first heating the assembly to "tack" the laminate elements together, and next applying heat and pressure for bonding the laminate elements. Superior optically clear laminates which result from the method are disclosed wherein a semi-rigid sheet of material is encapsulated in thermoplastic laminating material within an interlayer between sheets of rigid material such as glass.
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IBM Technical Disclosure Bulletin, vol. 15, No. 2, Jul. 1972 Packaging of Liquid-Crystal Displays by A. Aviram.
Gajewski Kenneth J.
Meyer John H.
Abolins Peter
Ball Michael W.
Ellerbrock Charles
Ford Motor Company
Johnstone Adrienne C.
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