Back to results
US 2003/0148114 A1Published application
Glass lamination process
AssigneeSolutia Inc.
InventorsDavid Paul Bourcier, Francois Andre Koran, Jan Herbert Liliane Crommen
Life of this patent
Estimating the term…
Abstract
Glass laminates are prepared using low-water content plastic interlayer material, such as polyvinylbutyral interlayer sheets, by a process employing nip roll de-airing, and high temperature finishing at atmospheric pressure.
Claims37
A process for making a laminate comprising:
- positioning a plastic material, having a moisture content below 0.35 percent by weight of the plastic material, opposite at least one rigid substrate;
- pre-heating at least one rigid substrate, or the plastic material, or any combination thereof, to a tacking temperature;
- tacking the plastic material and substrates through a short term pressure application to form a pre-laminate;
- heating the pre-laminate at a temperature and for a time effective to bond the plastic material to the substrates.
1 more element
A process for making a laminate comprising:
- interposing a polyvinylbutyral sheet, having a moisture content between about 0.01 and about 0.20 percent by weight, between two rigid substrates;
- tacking the polyvinylbutyral and the substrates together and sealing edges to form a pre-laminate;
- passing the prelaminate through a short term pressure application for a duration of about 0.02 to about 100 seconds;
- and
- heating at a temperature of about 150° C. to about 220° C. for about 0.5 to about 180 minutes to bond the polyvinylbutyral to the substrates and form a laminate.
2 more elements
A glass laminate having an interlayer moisture content ranging from about 0.03 to about 0.18 percent by weight of the plastic sheet and having a bake failure in the range of about 170° C. to 250° C.
An apparatus for producing laminated glass comprising:
- a primary heater unit for pre-heating a layer of plastic material to a tacking temperature;
- a tacking pressure means for applying a short term pressure application to a layered assembly of at least one rigid substrate and the layer of plastic material to tack the layer of plastic material to the rigid substrate to form a prelaminate assembly;
- and,
- a finishing heater unit for heating the prelaminate assembly to a temperature and for a time effective to bond the plastic material to the rigid substrate.
1 more element
Dependencies are inferred from the claim text.