Patent ID: 6618926
Filing Date: 2003-09-16
Classification: B21C,B21D,E06B,Y10T

Abstract:
A method of making notched muntin bars from a supply of sheet material, the method comprising steps of:a) providing a supply of thin sheet material; b) removing sections of the sheet material along the length thereof, the removed sections being spaced from each other; c) passing the sheet material through a rolling mill to form elongated tubular muntin bar stock having notches spaded along the length thereof corresponding to said removed sections of the sheet material; d) severing the muntin bar stock at predetermined locations along said length to form individual notched muntin bars configured to be combined with other notched muntin bars to form a muntin bar grid; and e) applying adhesive material to the muntin bars in a region of a notch in some of said muntin bars.