AK9000 Automatic Sausage Twisting And Knot Tying Machine The AK9000 is an automatic casing knot tying machine designed to work with animal casing, protein sausage casing and collagen casing. Connecting with a sausage length controller, it realizes a high-speed knot tying procedure with a stuffing speed of up to 600 knots per minute. Key Features Automatic casing knot tying device suitable for animal, protein and collagen casing Stuffing speed up to 600 knots per minute for