Method of Producing a Low Haze Plastic Glazing
OwnerBarry Hoult, Harold Mukamal +2inventors
InventorsBarry Hoult, Harold Mukamal, Chengtao Li, Keith D. Weiss
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Abstract
A method of manufacturing low-haze plastic window glazing is claimed where a portion of a panel mold interior is polished with an abrasive material no finer than 600 grit size. Plastic resin is then introduced into the mold under heat and pressure to form a panel. Weatherable coating is then applied to portions of the panel via a wet coating process. An abrasion resistant coating is then applied to portions of the panel via a plasma application technique. This method produces a window glazing with at least one portion having no more than 1% haze.
Claims13
A method of manufacturing plastic window glazing comprising the steps of:
- providing a panel mold having interior cavity defined by at least a first cavity surface and a second cavity surface;
- polishing at least the first cavity surface of the panel mold with an abrasive material no finer than 600 grit size;
- introducing plastic resin into the panel mold under heat and pressure to form a panel having first and second panel surfaces respectively corresponding to the first and second cavity surfaces;
- removing the panel from the panel mold;
- applying a weather resistant coating to at least the first panel surface;
- and
- resulting in a window glazing having no more than one percent haze.
A method of manufacturing polycarbonate window glazing for use in an automotive vehicle comprising the steps of:
- providing a panel mold having an interior cavity;
- polishing the interior of the panel mold with an abrasive material no finer than 600 grit size;
- injecting a polycarbonate resin into the panel mold under heat and pressure;
- removing a panel from the panel mold;
- applying a wet coat of silicone based weatherable coating to both sides of the panel;
- applying an abrasion resistant coating by plasma-ion application technique to both sides of the panel;
- producing a window glazing having no more than one percent haze over substantially the entire panel;
- and
- installing the glazing in an automotive vehicle.
A method of manufacturing polycarbonate window glazing for use as a sunroof in an automotive vehicle comprising the steps of:
- providing a panel mold comprised of a first half and a second half which when assembled has an interior cavity;
- polishing the interior of the first mold half with an abrasive material no finer than 600 grit size;
- polishing the interior of the second mold half with an abrasive material at least as fine as 1,400 grit size;
- injecting a polycarbonate resin into the panel mold under heat and pressure;
- removing a panel from the panel mold;
- applying a wet coat of silicone-based weatherable coating only to the panel surface formed by the first mold half;
- applying an abrasion resistant coating by plasma-ion application technique to the panel surfaces produced by the first mold half and the second mold half;
- producing a window glazing having no more than one percent haze over substantially the entire panel;
- and
- installing the glazing as a sunroof in an automotive vehicle.
Dependencies are inferred from the claim text.