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US 2012/0234050 A1Published application
High-strength laminated sheet for optical applications
OwnerPeter L. Bocko, David Chen +8inventors
InventorsPeter L. Bocko, David Chen, Glen B. Cook, Frank T. Coppola, Victoria A. Edwards, Gunilla E. Gillberg, Josef C. Lapp, Randy L. Rhoads, David A. Tammaro, Butchi R. Vaddi
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Abstract
A laminated sheet includes a surface layer having an optical surface that is of fire-polished quality and a core layer having a higher modulus than the surface layer to increase an overall stiffness or fracture toughness of the laminated sheet.
Claims5
An apparatus for forming a laminated sheet, comprising:
- an overflow means for forming opposed sheet-like flows, the overflow means having at least two independent compartments for receiving a viscous, flowable material;
- a forming means positioned below the overflow means for converging and uniting the opposed sheet-like flows into a single drawn sheet flow;
- means for pivotally adjusting the overflow means such that a surface of the overflow channel has a desired tilt angle with respect to the horizontal;
- and
- means for delivering a viscous, flowable material into the compartments.
2 more elements
An apparatus for forming a laminated sheet, comprising:
- an overflow channel for forming opposed sheet-like flows from a viscous, flowable material;
- a slotted channel positioned below the overflow channel for forming a drawn sheet-like flow;
- a forming body positioned below the overflow channel for converging and uniting the opposed sheet-like flows with outer surfaces of the drawn sheet-like flow to form a laminated flow;
- means for pivotally adjusting the overflow channel such that a surface of the overflow channel has a desired tilt angle with respect to the horizontal;
- and
- means for delivering a viscous, flowable material into the overflow channel.
3 more elements
Dependencies are inferred from the claim text.