Mono material film structures is the name of the modern solution for all packaging applications that require both high performance and environmental friendliness. However, the production of full PO films poses challenges for plastics processors: they have to adapt and expand their manufacturing equipment and meet all the requirements of the food industry. With its Triple Bubble technology, Kuhne Anlagenbau GmbH offers a solution to all film manufacturers for the economical production of uniformly oriented mono-material films that are both high quality and directly sealable.
Kuhne Anlagenbau
Kuhne Anlagenbau presents proven Triple Bubble technology for recyclable barrier films
MD Jürgen Schiffmann said: "We have been building Triple Bubble blown film lines for over 20 years and thus have an enormous wealth of experience both in terms of machine technology and formulation development. We have now transferred this know-how advantage to five-layer full polyolefin film structures and are thus offering an alternative that has many advantages over conventional blown film lines with MDO stretching units.”
During the extensive tests, the machine technology for manufacturing the five-layer structures was optimised and suitable formulations were tried out. The result is a uniformly oriented film, optionally as a full PE or full PP barrier film structure. The main advantages of these film structures are their sealability and their waste-free, and thus more efficient and environmentally friendly, production.
The technology is just as flexible in terms of the film thickness, which can vary between 15 and 150 μm, and in terms of the film properties. Film shrinkage is also adjustable, depending on whether the film is to be used for stand-up pouches, coffee and snack packaging, which require non-shrinkable films or for lid films. For bottom web film in food packaging, the films can also be designed to be thermoformable, deep-drawable and shrinkable for form-shrink applications.
Since the films are produced using the Triple Bubble technology they have the same properties and thickness over the entire circumference, so that neither a neck-in nor an edge trim occur.