Method and an apparatus for forming and filling packages
AssigneeJoker System Aktiebolag
InventorsJan Jostler, Ingemar Broden
Life of this patent
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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.
Claims14
A method of forming and filling packages comprising:
- longitudinally advancing a folded strip of material having opposite longitudinal edges at which thickened material is provided,
- said folded strip of material being longitudinally advanced with the thickened material in confronting relation form a web with an open, upper end, a closed lower end and opposite walls,
- sealing the web along longitudinally spaced, transverse joints, at which said walls are joined together to produce successive pockets along the web, the transverse joints extending from the closed, lower end of the web upwardly towards the upper end with the thickened material thereat,
- forming lines of weakness at said joints extending from said lower end towards said upper end,
- forming recesses in said walls at upper ends of said lines of weakness and below said thickened material at said upper end of the web,
- opening the pockets of the web at said open, upper end of the web by engaging the thickened material thereat and guidably moving the edge with said thickened material away from one another as said web undergoes longitudinal advance,
- introducing a substance into the now open pockets as said pockets advance past a filling station,
- closing and sealing said pockets by engaging said thickened material at the upper end of the web and guidably moving the thickened material of the two walls into contact with one another, and
- joining said thickened material at the two walls to one another to form packages containing said substance.
Apparatus for forming and filling packages comprising:
- means for longitudinally advancing a folded strip of material having opposite longitudinal edges at which thickened material is provided,
- said folded strip of material having said edges with the thickened material in confronting relation and forming a web with an open, upper end, a closed lower end and opposite walls,
- means for sealing the web along longitudinally spaced, transverse joints, at which said walls are joined together to produce successive pockets along the web, the transverse joint extending from the closed, lower end of the web upwardly towards said upper end at which the thickened material is disposed,
- means for forming lines of weakness at said joints extending from said lower end towards said upper end,
- means for forming recesses in said walls at upper ends of said lines of weakness and below said thickened material at the upper end of the web,
- means for opening the pockets of the web at said open, upper end of the web including guides for engaging the thickened material thereat and guidably moving the thickened material away from one another as said web undergoes longitudinal advance,
- means for introducing a substance into the now open pockets as said pockets advance past a filling station,
- means for closing said pockets by guidably moving the thickened material of the two walls into contact with one another, and
- means for then joining said thickened material at the two walls to one another to form packages containing said substance.
Dependencies are inferred from the claim text.