A FURTHER STEP TO PERFECTION IN BLOWN FILM TECHNOLOGY

Over the last few years economic viability and sustainability have become core themes in the plastics industry. At the same time the demand for functional film with excellent optical and mechanical properties is increasing in the packaging industry. The blown film manufacturing process offers excellent opportunities to meet these growing requirements. In connection with MDO technology, by means of which specific film properties can be influenced and a reduction in the film thickness achieved, a further step can be taken to meet the growing expectations in efficiency and sustainability.

 

Committed to introducing internationally first-rate technologies and co-extrusion film lines to the domestic plastics market, Jebsen Industrial has partnered with Hosokawa Alpine earlier this year – a pioneer in the production of mono-axially oriented film since 1997 who has built up a vast fund of knowledge and know-how with this technology.

 

As a result of “neck-in” which occurs in the orientation process the edges of oriented film had to be trimmed generously to avoid a build-up on edges of the film reel which cause problems during winding, lamination or printing. Hosokawa Alpine developed a control system that combines the film blowing and film orientation processes and eliminates these problems.

 

The result is TRIO (Trim Reduction for Inline Orientation, Patent DE 10 2009 033 171 and EP 2277681), which enables the production of in-line mono-axially oriented film with of unprecedented quality. The TRIO controls the film profile on the blown film line and compensates for oscillation of the take-off unit in such a way that the inline oriented film displays only a minimum thickness deviation over the entire lay-flat width. To this end, thin spots are generated at the edges of the film prior to orientation and the film thickness profile of the film blowing line in accordance with the thickness profile measured downstream of the orientation unit.

 

 

HOSOKAWA ALPINE MDO

 

MDO films can be produced on Hosokawa Alpine inline orientation lines at orientation ratios of approx. 1:10 subject to the materials used and the required properties. This process improves not only the mechanical properties such as stiffness, puncture resistance and tear strength, but also optical properties such as gloss and transparency. Other properties e.g. dead-fold characteristics, shrink and barrier properties can also be influenced. 

 

MDO film produced using TRIO is generally up to 50% thinner than comparable standard blown films and the required edge trim is reduced by 50% in comparison with MDO films produced without TRIO. With the latest TRIO generation, it is possible without difficulty to produce blocked tubular film, tubular film side slit on both sides and tubular film side slit one side and opened, printed in-line or wound for external printing, lamination or conversion. Reels with standard industry diameters and of impressive quality are produced.

 

In-line MDO lines with TRIO have established themselves in industry e.g for the production of heavy-duty sacks, compression film, packaging for fruit and vegetables, magazine wraps, breathable film for building and hygiene applications, shrink labels, stand-up pouches and numerous other applications.

 

Hosokawa Alpine has been developing new film structures for the future in close cooperation with renowned customers and raw material manufacturers. Its leading edge technology coupled with the highest “Made in Germany” quality standards is available in Greater China exclusively through Jebsen Industrial, a long-term partner with decades of experience in China’s plastics processing industry.

 

To find out how Jebsen Industrial can help you succeed in Greater China, or for more information on Hosokawa Alpine’s plastics processing solutions, please click here to contact us.


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