Method and System for Repair of Glass
OwnerRichard Campfield, Kerry Wanstrathinventors
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Abstract
A pre-treatment chemical mixture of hydrofluoric acid or ammonium bifluoride and isopropyl alcohol for glass adhesive applications. In one particular a pretreatment for the repair of stone breaks and long cracks in windshields. The pretreatment improves the repair by removing, through evaporation of the solvent, isopropyl alcohol, the hydrophobic coating that has been applied to the windshield when it was manufactured and simultaneously etching the sides of the stone break or long crack in a way that allows better adhesion by the adhesive repair resin while not leaving any trace of the etching after the repair is complete, thereby keeping the windshield or other glass, clear.
Claims22
The method of removing contamination from a break or crack in a windshield by injecting the break or crack with a mixture of hydrofluoric acid or ammonium bifluoride and isopropyl alcohol.
The method of increasing the adhesive mechanical bond for the repair of a break or crack in a windshield by first injecting a pretreatment mixture of hydrofluoric acid or ammonium bifluoride and isopropyl alcohol into the crack and allowing it to evaporate whereby the crack surfaces will be etched.
The method of pre-treating any glass adhesive application by first applying a mixture of hydrofluoric acid or ammonium bifluoride and isopropyl alcohol to at least one of the surfaces to be adhered in order to increase the bond of the adhesive used in the adhesive application
A method for repairing a windshield damaged by a crack or break resulting in cracked surfaces in the windshield comprising;
- applying a pretreatment solution to the cracked surfaces which pretreatment solution comprises hydrofluoric acid and a solvent;
- allowing the pretreatment solution to dry;
- repairing the crack or break by the injection therein of a repair resin.
A method of pretreating a windshield crack or break to remove hydrophobic contaminants and also to improve the surfaces for adhesion of repair resin comprising;
- applying a pretreatment solution to the cracked surfaces which pretreatment solution comprises a chemical that will break a bond between the glass and the contaminant and will also etch the glass and a solvent;
- allowing the pretreatment solution to dry and to volatilize the hydrophobic contaminants and to render the glass surfaces etched;
- repairing the crack or break by the injection therein of a repair resin.
Dependencies are inferred from the claim text.