Patent ID: 8453699

Claim:
A method of molding a glazing gasket onto a multilayer glass panel by applying a molding material discharged from a coating gun as a layer of molding material to a peripheral edge portion of the multilayer glass panel while the multilayer glass panel and the coating gun are being moved relatively to each other along peripheral edge portion of the multilayer glass panel, comprising the steps of: providing a molding material discharge pump connected to said coating gun for discharging the molding material from said coating gun, an extruding machine for extruding the molding material, and a molding material feed pump for feeding the molding material extruded from said extruding machine to said molding material discharge pump; providing a circulation path connected between said molding material discharge pump and said extruding machine or between said molding material discharge pump and said molding material feed pump; feeding said molding material extruded from said extruding machine to said molding material discharge pump with said molding material feed pump; drawing said molding material into said molding material discharge pump, supplying said molding material from said molding material discharge pump to said coating gun under constant pressure, and adjusting the rate at which said molding material is discharged from said coating gun depending on the relative speed at which said multilayer glass panel and said coating gun are moved relatively to each other; and circulating an amount of molding material through said circulation path to said extruding machine or said molding material feed pump, said amount of molding material being commensurate with the difference between a first rate at which said molding material is fed from said molding material feed pump to said molding material discharge pump and a second rate at which said molding material is drawn into said molding material discharge pump when said first rate is greater than said second rate.