Claims
- 1. 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.
- 2. The method of claim 1, further comprising the step of engaging at least one muntin bar notch that contains adhesive with a notch in at least one other muntin bar to form a muntin bar grid.
- 3. Apparatus for making notched muntin bars from a supply of sheet material comprising:a) a supply of thin sheet material; b) a first forming station for receiving sheet material from the supply and including a punch for removing sections for the sheet material along the length thereof, the removed sections being spaced from each other; c) a second forming station for receiving sheet material from the first forming station and including a rolling mill to form elongated tubular muntin bar stock having notches spaced along the length thereof corresponding to said removed sections of the sheet material; d) a third forming station for 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) an adhesive applicator for applying an adhesive material to the muntin bars in a region of the notches.
Parent Case Info
This is a divisional application of Ser. No. 09/726,303, filed Nov. 28, 2000, now U.S. Pat. No. 6,397,453, which is a divisional application of Ser. No. 08/797,031, filed Feb. 7, 1997, now U.S. Pat. No. 6,173,484.
US Referenced Citations (10)