Abstract: A web (20) of sequentially disposed package blanks (26) are supplied to an apparatus for opening and closing the package blanks at a filling station. The web has a first wall (21 a) opposite a second wall (21b). Transverse slits (27) are disposed between the side closures of the package blanks. Each respective wall is provided with retainers at its upper edges which guide the edges when the web is displaced along the apparatus. The wall (21a, b) of each package blank is provided with a longitudinal slit (29a). The slit (29a) of the first wall extends from the transverse slit (27) at one side closure of the package blank, and the longitudinal slit of the second wall extends from the transverse slit at the second side closure of the package blank. The apparatus includes mechanical retainer devices which are disposed in transversely spaced relation from one another in that part of the apparatus where the package blanks are displaced in the opened state so that the blanks can be filled.

Abstract: The invention relates to a web (20) comprising mutually sequentially disposed package blanks (26) and an arrangement for opening and closing the package blanks. The web has longitudinal first and second edges and a first wall (21a) opposite a second wall (21b). Transverse slits (27) are disposed at the side closures of the package blanks. Each respective wall along the second edge is provided with retainers which guide edge portions of the web when the web is displaced along mechanical devices. The walls (21a, b) of each package blank are provided with a longitudinal slit (29a). The slit (29a) in the first wall extends from the slit (27) at one side closure of the package blank, and the slit in the second wall extends from the slit at the second side closure of the package blank.

Abstract: A continuous flexible web (20) with mutually subsequently disposed package pockets (26) and a method of opening and filling these pockets. The web has two opposite walls (21a, b) and longitudinal first and second edges (22, 23) between which the pockets are located. Each respective wall (21a, b) includes, at a second edge region (23), two opposed edge portions (24a, b) with continuous retainer devices (43a, b) disposed in the longitudinal direction of the web for cooperating with mechanical devices for guiding the edge portions on movement of the web in an apparatus for the supply of material to the pockets (26). Between the pockets, there are disposed transverse slots (27) which, in the region of the edge portions (24a, b) merge into longitudinal slots (29). The edge portions (24a, b) include strip-like portions (14a, b) which extend from the retainer devices (43a, b) located between the longitudinal slots (29) and the second edge (23) of the web.

Abstract: A guide mechanism (3) for positioning a continuously flexible packaging web (20) which has two opposite walls (21a, b) defining packaging blanks (26) disposed, in succession, in the longitudinal direction of the web. The packaging blanks have closed bottoms at the lower edge and opposing edge portions (24a, b) at the upper edge (23). The guide mechanism includes mechanical guide members (33a, b) provided with at least one channel (31a, b) for guiding the edge portions (24a, b) during displacement of the web in an apparatus for the supply of material into the packaging blanks (26). The mechanical guide members (33a, b) are formed from a number of links (30). In the region of the apparatus where the edge portions (24a, b) of the web are to be spaced transversely apart, the links are disposed in mutual spaced-apart relationship.

Abstract: A method and apparatus for forming and filling packages in which a flexible strip (10) of plastic material is folded in a central region, in a first station (1), to form a folded web (20) of two substantially opposed walls (21a,b) with first (22) and second (23) end regions disposed in the longitudinal direction of the web. In the first end region (22), the walls are interconnected with one another, and, in the second end region (23) the walls are separate from one another and provided with thickened material. In a second station (2) the web is formed with successively located storage pockets (26), and in a third station (3) the thickened material is engaged and the pockets (26) are opened so as to be filled with material, whereafter the pockets are closed.

Abstract: A continuously flexible belt displaying two opposing walls (5, 6) and longitudinal upper and lower edges and incorporating a number of consecutively arranged packaging blanks (2), each with a bottom section (4) at the aforementioned lower edge and two bonding zones (7, 8) arranged transversely in relation to the longitudinal direction of the belt which form the side closures of the packaging blank.