Solution for Injection Thin Wall Barrier Packaging

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KraussMaffei's C3 Sprinter series of injection molding machines has gained many applications in its high-speed design for two-component injection molding. Now, the company has expanded the series of machines into the production of thin-walled packaging products with barrier films. To reduce manufacturing costs.



KraussMaffei selected its 1400kN injection moulding machine with the model "KM 140-520/55 CZ C3 Multiinject" and used a two-component mould supplied by Otto Hofstetter AG of Uznach, Switzerland to produce copolymers with ethylene-vinyl alcohol. (EVOH) Barrier Diaphragm rectangular polypropylene containers with a length of 400 mm. In the injection molding process, the two materials were injected from the same nozzle, and finally a product with a three-layer structure (PP/EVOH/PP) was formed. Among them, EVOH with a barrier function acts as a core layer. It can not only prevent the aroma of the container and gas from seeping out, but also can prolong the service life of the content and increase its safety performance. By using KraussMaffei's technology, not only the uniform thickness of the barrier film and the overall wall thickness of the rectangular container, but also the uniform distribution of the rotationally symmetrical film on the edge of the container is achieved. In order to cope with the high-speed cycle of the injection molding machine, KraussMaffei is also equipped with its CB H1 high-speed pick-up robot. This compact and extremely fast pick-up system is fixed on the fixed platen of the injection molding machine due to its vertical rotation. So that it can enter the mold from the side of the machine.

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