Abstract: A prefabricated bow forming machine in which a pair of ribbons are mated along their sides with a strap approximately centrally disposed lengthwise of said pair of ribbons. The pair of ribbons and strap are joined together at the head end and the ribbons are bonded together to form seams at preselected intervals along their length at either side of the strap. The seams are at an angle to the respective edges of the ribbons and are oppositely angled with adjacent seams. The bow forming machine has a bench on which the pair of ribbons are laid out in a track with the strap centrally disposed lengthwise therebetween. The machine includes a pivotable press which swings down against the bench and heat welds the pair of ribbons at preselected intervals to form the seams. The bench and press have heat elements which spot weld the two ribbons at preselected intervals and angles. The number of welded seams along the length of the ribbon determines the number of loops and size of the bow.