Specification :

Coex Bubble 10

Machine for the production of air retention barrier bubble film with co-extrusion technology for 5 + 5 layers ( ABCBA + ABCBA)

The COEX BUBBLE 10 plant, represents the state-of-the art machine among the Torninovas production range . It has got all the most sophisticated technologies for air bubble film production, in order to ensure the easy production to the customer, thanks to the full automation of the co-extrusion process, to reach a film with air-barrier effect, that keeps the air inside the bubble for a longer time.
The main advantages of such air bubble film are:
- Better cushioning protection compared with a thicker mono-extruded bubble film: the co-extruded bubble film offers higher air retention ( thanks to the internal layer of PA6) and then ensures effective long-term cushioning performances from packing to final delivery. It means also extra strength of each bubble and then extra protection of the goods.
- Better protection with thinner plastic film: it means better performance with less raw material consumption.
- Reusable : his long lasting cushioning performances allows to use the same air bubble film for many times.
- Recyclable : the co-extruded bubble film could be recycled with other polyethylene material

An air bubble film of 35 g/ , 2, produced by co-extrusion process, can be compared, in terms of resistance, with a mono-extrusion air bubble film of 55 g/ m2. They have same resistance. Considering such relationship, it means that you save the 30% of the cost for raw materials, by using co-extrusion production process.
Mainly, it is composed by three extruders: one for PE layer, one for the PA6 layer and the third one for the TIE layer between PE and PA6. These three extruders, through the last generation of feed-blocks with adjustable geometry allow the production of the special co-extruded air bubble films with ABCBA structure.
The COEX BUBBLE plant has got the following features:
a) Extruders with a.c. motors mounted in axis and with universal screws in wear-resistant steel, with modular profiles with barrier double thread, in different diameters according to the level of production requested. Every extruder is equipped with a filter and a gear pump with transmission by cardan joint and motor with inverter and feedback loop control. The gear pump, through PID control, adjust automatically the speed of the extruder according to the capacity requested by the production formula and to the desired extrusion pressure.
b) Two separated flat dies for an excellent control and adjustments of the produced films, realized in steel with adjustable deliveries. The feed-block with adjustable geometry, allows the distribution uniformity of the internal layer of polyamide ( PA6) on the whole width of the film, also with thickness less than 0.5 micron.
c) Gravimetric blending and metering for the ingredients, for a more accurate and automated management of the granules to be extruded.
d) Forming unit climbed on guide and rack arms that allow the automated movement from the stand-by position to the production position thought PLC. The forming cylinder is mounted on mobile structure ( motorized and controlled by PLC) in both the directions for the regulation of the materials delivery from the flat dies and for its fast interchangeability.
e) Main control panel managed by PLC, complete with supervision software managed through touch screen that allows the planning and the control of the whole plant . The production control occurs by formula that the operator can personalize according to the co-extrusion percentage he needs and to the speed of production.
f) The forming cylinder is thermoregulated by a water thermoregulation unit in order to maintain more constant its temperature.
g) Width of the produced film: from 1.000 mm up to 2.500 mm ( or more on request)

The plant can be equipped ( also after installation, thanks to its modularity) with several accessories:
1) Moulder cylinder with bubble in different diameters
2) Perforation unit with brushless motor
3) Cast cylinders oil units for a better control of the produced films
4) Third and fourth layer unit that allow the in-line lamination of one or two sides of air bubble film eliminating others processing
5) Trimmed edge recovery systems that allow the in-line recycling of the trims with hopper feeding extruder
6) Fast Loading system on the rewinder, that allows, in automatic way, to unload the produced roll with closing system by glue and the loading of the new carton core with application of hot-melt glue.

The machines are fully customizable. Contact us to project the most suitable plant for your production and market necessity.