Different type of screws packaging in vertical machine (VFFS) with polyethylene film pillow pack Groupings of screws DIN 7981 / DIN 7973 in polyethylene film. 2, 3 and 4 screws per bag. 625_1.jpg 625_2.jpg ‹ › Prev Next VTI 200 Vertical packaging machine (VFFS) which makes a three sealing pack. Medium production speed performance up to 70 cycles/min. with an excellent quality/price ratio.