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 W.sub.m, a melt thickness T.sub.m and a core to cladding thickness ratio T.sub.c:T.sub.cl. The multi-layer glass melt is directed onto the surface of a molten metal bath contained in a float tank. The width W.sub.m of the multi-layer glass melt is less than the width W.sub.f 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 W.sub.m of the multi-layer glass melt increases, the melt thickness T.sub.m decreases, and the core to cladding thickness ratio T.sub.c:T.sub.cl remains constant as the multi-layer glass melt solidifies into a laminated glass sheet.

The present disclosure provides an apparatus for eliminating a heterogeneous glass present in the top surface of a molten glass effectively, and a melting furnace and a glass manufacturing apparatus comprising the same. The apparatus for eliminating a heterogeneous glass according to one aspect of the present disclosure comprises a storage bath having an inlet and an outlet to receive a molten glass fed into the inlet and to discharge the received molten glass through the outlet, and an evacuating opening formed on the top of the storage bath, the evacuating opening allowing the received molten glass to overflow; a first gate being mounted close to the outlet of the storage bath to adjust an open area, thereby controlling the flow rate of the molten glass to be discharged through the outlet; and a second gate being mounted close to the inlet of the storage bath to control the height of the molten glass received in the storage bath at the section in which the evacuating opening is formed.