Manufacturing

Inspection of the delivered raw materials to check their physical and chemical parameters.

Rolls of paper are moved to the printing area, where flexographic machines using up to 8 colours print an image on them.

The paper sequentially passes through sections of rollers with photopolymer plates made to a specific design so that the correct colour can be applied to each section. Then, the paper is moved into the drying tunnel. A mobile digital camera is used to catch any possible printing defects as early as possible.

Converting into a bag

The paper is unrolled from all the rolls at the same time and fed into the transverse and longitudinal adhesion units, where adhesive is applied to specific points.

After longitudinal adhesion, the paper sheets are fed into the tube-forming unit, where they are formed into one tube, and the seam edges are created.

After the tube-forming unit, the paper tube is pulled into the head of the machine, where the cutting and fixing unit cuts the tube along the transverse cutting line.

Tubes with notched grooves are transported to the opening unit, where both ends of the tube are opened by two parallel vacuum strips, with the open bottoms then being pressed on the valve unit, a valve is formed from the required material and is glued in.

After that, the semi-finished product is moved into the counting, separation and packing units that stack bags into a package for subsequent stacking on a pallet.

Converting into a package

The paper sheet is unrolled with a pulling unit and fed through the machine. If necessary, handles are glued onto the paper and holes are punched so that a section of net or film can be glued into it.

The paper is then moved into the tube forming section. Here a paper tube is glued from the paper. A blade is used to cut the tube into sections that are folded into the bottom-forming cylinder.

The internal and external bottom valves are then folded to close the bottom. The finished packets are then moved to the stacking cylinder and table where they are removed and counted.