Apparatus for producing and filling bottom-fold bags

Abstract From the Canadian patent

Bottom-fold bags, made of endless tubular material which can be made of endless flat material and having a substantially rectangular standing-surface together with a, method and apparatus for producing and filling such bags are disclosed. Two lateral, substantially triangular bottom-flaps in the vicinity of which the tubular material is in three layers, are produced. The tubular material is folded-in from the sides of the bag being formed and a bottom longitudinal seam is formed by pressing the tubular material together and connecting together the layers of tubular material thus caused to bear upon one another. At least the two layers of the bottom-flaps facing away from the bottom-surface …