Prepressing glass plastic assemblies

Details Prepressing glass plastic assemblies Prepressing glass plastic assemblies

B - Operations, Transporting

32

B

154/43

B32B 17/10 (2006.01)

Patent

CA 1226799

ABSTRACT A method of preliminarily pressing a bent assembly comprising a pair of bent glass sheets and a flexible interlayer comprising a first heating step performed without vacuum, a biasing step, an unbiasing step and followed by a second heating step performed simultaneously with an application of vacuum. When the assembly so prepressed is further laminated under heat and pressure, it develops fewer bubbles after a heat stability test involving exposure to high temperature for an extended period than assemblies further laminated under such heat and pressure conditions after a prepressing step that includes passing the assembly between rollers prior to the further lamination step.

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