Extrusion International 1-2019

24 Extrusion International 1/2019 INDUSTRY NEWS Last year, Starlinger recycling technology supplemented its well-established recycling line recoSTAR dynamic with a sev- enth machinery size. The introduction of this new size was prompted by numerous inquiries from the area of post-con- sumer film, which predominantly requested a throughput of approx. 1,000 kg/h. The lines that had hitherto been available, the recoSTAR dynamic 125 and 165 (the numbers indicate the screw diameter in millimeters), were slightly under- or over- sized for this capacity. The launch of the recoSTAR dynamic 145 bridges this gap: The line is designed for approx. 1 ton of regranulate and shows an optimal cost-benefit ratio that renders it very attractive also from a commercial perspective. The fields of application of the recoSTAR dynamic are mani- fold. Be it industrial or post-consumer waste, humid or heavily printed material – the line is extremely versatile and permits a customized setup. A central component is the SMART feeder, which on top of drying and condensing the material ensures a homogeneous mixing ratio. Recyclers of post-consumer and/ or heavily printed film also operate the highly efficient degas- sing unit C-VAC; this module is positioned after the filter and can be controlled independently of the main extruder. In the C-VAC, the melt surface is increased by 300 %, which allows Starlinger & Co. Gesellschaft m.b.H. www.starlinger.com the efficient removal of gases and prevents air from being trapped inside the regranulate. This is especially important for film recyclers because ink, humidity and contamination can lead to higher formation of gases during the extrusion pro- cess. Another benefit is the rECO package of the recoSTAR dy- namic: It saves costs and protects the environment through a 10 % reduction in energy consumption. The recoSTAR dynamic 145 with C-VACmodule (©Starlinger) Greater Efficiency for Film Recyclers New 800 Series Hybrid Extrusion Tooling announced Guill announces the introduction of a new version of its popu- lar 800 series, known as 800 Series Hybrid. In some extrusion ap- plications that utilize crossheads and inlines, layers of the exact same material are applied multiple times, using a single die. This method is used to reduce the propensity for errors causedby gels breaking through a thin wall, weld lines, inconsistent wall thick- ness, plus material and process variations. Additional errors in- clude difficult-to-process materials and demanding applications where there is zero fault tolerance. Seeking to design the next generation multi-layer die to over- come these challenges, the engineers at Guill looked for away to incorporate this technology into an updated version of the 800 Series. This led to the creation of the 800 Series Hybrid. The inherent ben- efits of the 800 Series are retained, including compact design, low resi- dence time and a common deflector bore that eliminates tolerance stack up. The challenge was to create a hybrid design that incorporates the benefits of layer overlapping, while reducing unnecessary complex- ity and making the technology more Guill Tool & Engineering www.guill.com cost-affordable for customers. This was achieved by overlapping layers in each semi-deflector, using a single cone. The highly ef- ficient design of the 800 Series Hybrid reduces cost and size, as opposed to other methods of overlapping layers. Essential benefits of the 800 Series Hybrid include eliminating weld lines in materials through patented overlapping technolo- gy, producing amore consistent finished product; reduced sensi- tivity to changes in viscosity; reduced sensitivity to changes in line speed; myriad material and multi-layer application possibilities; works in all tubing and jacketing applications with a wide range ofmaterials; low residence time; compact design and a low toler- ance stack-up error factor, all resulting in improved concentricity. The 800 Series Hybrid extrusion tool greatly reduces stagnation, because overlapping layers are more inherently balanced than single layers and also because each semi-deflector is “tuned to flush.” Conventional deflectors must simultaneously achieve a balance between flushing, balancing and eliminating the weld line. There is less difference between the slowest movingmateri- al and the fastest movingmaterial in the deflector channels, thus making the viscosity more consistent in the deflector.