Perfect integration

Although pre-announced last year, Torninova Srl waited until this year before officially announcing the launch of its "Compact Stretch®" line for co-extruded cast stretch film production (ABC structure). The initial model (HT12) was presented and installed in Italy last December and by mid-February, a second version, which has already been purchased by a European customer, underwent final trials and tests. Detailed research and development work involving experienced renowned figures from the field of extruded PE stretch film began three years ago. Work was carried out with the support of some of the best known manufacturers of extruded components, together with experts from Italian and American universities. Results achieved from the research allowed Torninova to offer the market an innovative stretch production film technology. Thanks to Italian and foreign customer-cum-partners, who have supported the research and development phases and purchased prototype systems, it has been possible to test and monitor each individual process and component as if under constant production conditions, and make real time adjustments to product performance. There sult sachieved consist of a perfectly integrated system comprising cutting-edge component quality, with undeniable levels of reliability, which have been calibrated and arranged to meet the requirements of a high-performance compact cast line requiring a high degree of flexibility and low energy consumption. " The "Compact Stretch®" system is not simply the sum of standard components from various processes but a developed, tested and made-to-measure integrated system" This was the solid base upon which the Compact Stretch® series production line was officially launched. The series is headed by the 1,000 mm format for in杔ine manual and automatic format stretch film roll production. The line is guaranteed to produce high-quality film with thickness ranging from 8 to 40 microns. It has automatic adjustable series heads that permit high performance standards (net output: 550 kg/h, speed: above 500 m/min). The machine boasts of maximum process automation requiring only one sole operator, while reduced energy consumption is also assured. Analysis of the various system components highlights the presence of LLPOWEREX® extruders (with alternating current motors and infrared heaters to ensure limited maintenance and energy consumption) with screw profiles specially developed to guarantee perfect LLDPE extrusion. It also has a SWIFTCOOL® chill-roll unit with dual cooling rollers to ensure total material stabilisation. The unit carries out the finest and fastest controlling function of extruded film thanks to its dual-chamber air knife, integrated x-ray thickness measurement device (guaranteed thickness even involving coloured stretch film) and automatic head adjustment. The determining component in the line, the QUICKSILVER-4S® winder is fast and reliable at minimum cycle time of 12 seconds, and allows the machine line to directly rewind the stretch film to the reel suitable for manual and automatic use, in format width ranging from 125 mm, to 250 mm, 450 mm and 500 mm. A further component that sets the machine apart from other systems is the FULLFEED® trimming system with a for cing device specially-designed for the type and quantity of stretch film trimming required in a 1-metre compact stretch line. This enables the total recovery of all sucked and chopped trimmings in the main extruder line as well as allowing for any variations in pressure, even in the event of frequent changes in production operations and operating speed and, as a consequence, film thickness. The FULLFEED® system eliminates any potential non-uniformity in film thickness, including longitudinal sections. The new "Compact Stretch®" system is not simply the sum of standard components from variMarki