Methods and apparatuses for producing laminated glass sheets
First Claim
1. A method for forming a laminated glass sheet, the method comprising:
- delivering a molten core glass and a molten cladding glass to a slot draw apparatus such that the molten core glass passes through a core slot of the slot draw apparatus and the molten cladding glass passes through at least one cladding slot of the slot draw apparatus to form a multi-layer glass melt with a width Wm, a melt thickness Tm, and a core to cladding thickness ratio Tc;
Tcl upon exiting the slot draw apparatus;
directing the multi-layer glass melt onto a surface of a molten metal bath with a width Wf that is greater than the width Wm such that, as the multi-layer glass melt flows over the surface of the molten metal bath, the width Wm of the multi-layer glass melt increases, the melt thickness Tm decreases, and the core to cladding thickness ratio Tc;
Tcl remains constant as the multi-layer glass melt solidifies into the laminated glass sheet.
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Abstract
According to one embodiment, a method for forming a laminated glass sheet includes forming a multi-layer glass melt from a molten core glass and at least one molten cladding glass. The multi-layer glass melt has a width Wm, a melt thickness Tm and a core to cladding thickness ratio Tc:Tcl. The multi-layer glass melt is directed onto the surface of a molten metal bath contained in a float tank. The width Wm of the multi-layer glass melt is less than the width Wf of the float tank prior to the multi-layer glass melt entering the float tank. The multi-layer glass melt flows over the surface of the molten metal bath such that the width Wm of the multi-layer glass melt increases, the melt thickness Tm decreases, and the core to cladding thickness ratio Tc:Tcl remains constant as the multi-layer glass melt solidifies into a laminated glass sheet.
32 Citations
15 Claims
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1. A method for forming a laminated glass sheet, the method comprising:
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delivering a molten core glass and a molten cladding glass to a slot draw apparatus such that the molten core glass passes through a core slot of the slot draw apparatus and the molten cladding glass passes through at least one cladding slot of the slot draw apparatus to form a multi-layer glass melt with a width Wm, a melt thickness Tm, and a core to cladding thickness ratio Tc;
Tcl upon exiting the slot draw apparatus;directing the multi-layer glass melt onto a surface of a molten metal bath with a width Wf that is greater than the width Wm such that, as the multi-layer glass melt flows over the surface of the molten metal bath, the width Wm of the multi-layer glass melt increases, the melt thickness Tm decreases, and the core to cladding thickness ratio Tc;
Tcl remains constant as the multi-layer glass melt solidifies into the laminated glass sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification