Cardboard Blisters

Production of tools for solid cardboard blisters and conventional blisters

Although the appearance of a full carton blister may hardly differ from that of a conventional blister packaging, there are some subtleties to be taken into account during mould production in order to design and manufacture the appropriate moulds. Here, too, experience plays a weighty role. Some differences are:

• A blister pack consists of a plastic film that is formed into a shape and a cardboard card that serves as the back. The plastic film is loaded with the product and sealed with the cardboard card. A blister pack can be made of different plastic materials such as PET, PVC or PS.


• A full carton blister consists solely of cardboard that is formed into a shape and contains the product. The cardboard is glued or compressed at the edges to seal the package. A full carton blister can be made of recycled or renewable cardboard.


• The forming tools for blister packs must be made of heat- and corrosion-resistant material such as aluminum. The foil is heated and deep-drawn over the mold. The surface finish must be chosen in accordance with the product, the machine and the material to be processed.


• The forming tools for solid carton blisters usually consist of a variety of components, which are made of aluminum, steel or brass depending on the loads and movement sequences. To support the bending movement of the carton, tool components can also be provided with anti-adhesive coatings.

Working on individual projects at Schubert GmbH in Sinsheim: production of tools for the manufacture of solid cardboard blisters;