broad glass

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cylinder glass

In the past, a type of relatively poor-quality glass made by blowing a cylinder of molten glass, dividing it lengthwise, and then rolling these sheets flat while the glass was still hot; much cheaper than the higher-quality crown glass then available; also called sheet glass.
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On the other hand, the dynamic property of the sample prepared in steel mold has a broad glass rubber transition between the shifted transition of the components.
They converged into a single broad glass transition after annealing for 1 h at 200 [degrees] C, and the system was essentially homogeneous after two hs when it exhibited the same glass transition temperature as the melt blend, 120 [degrees] C.