Notched muntin bars having two finishes

摘要

An apparatus for making notched muntin bars. The apparatus includes an uncoiler or support for a supply of ribbon stock, a notching device, a roll forming machine and a severing device. The ribbon stock has a surface with first and second finishes. The notching device receives ribbon stock from the supply of ribbon stock. The notching device includes a punch that is moveable from a first position to a second position. In the first position the punch is activated to remove sections of material having the first finish. In the second position the punch is activated to remove sections of material having the second finish. The roll forming machine receives the ribbon stock from the notching device to form hollow muntin bar stock that has a first side with the first finish and a second side with the second finish. The formed muntin bar stock has notches in the first side having the first finish and notches in the second side having the second finish. The severing device severs the muntin bar stock to form individual muntin bars having the first and second finishes. The individual muntin bars may be assembled into a muntin bar grid having a first side with the first finish and second side with the second finish.