Extrusion 2-2020

65 Extrusion 2/2020 ➠ Guill Tool & Engineering www.guill.com brid include eliminating weld lines in ma- terials through patented overlapping technology, producing a more consistent finished product; reduced sensitivity to changes in viscosity; reduced sensitivity to changes in line speed; myriad material and multi-layer application possibilities; works in all tubing and jacketing applica- tions with a wide range of materials; low residence time; compact design and a low tolerance stack-up error factor, all re- sulting in improved concentricity. The 800 Series Hybrid extrusion tool greatly reduces stagnation, because overlapping layers are more inherently balanced than single layers and also be- cause each semi-deflector is “tuned to flush.” Conventional deflectors must si- multaneously achieve a balance between flushing, balancing and eliminating the weld line. There is less difference bet- ween the slowest moving material and the fastest moving material in the deflec- tor channels, thus making the viscosity more consistent in the deflector. Reciprocating Head introduced Guill Tool has released its new recipro- cating head. The traditional tip and die assembly is replaced with a linear reci- procating assembly that changes the tube’s profile within a given length. This process is repeated throughout a single extrusion run without interruptions. Cut- Guill announced the introduction of a new version of its popular 800 series, known as 800 Series Hybrid. In some ex- trusion applications that utilize cross- heads 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 caused by gels breaking through a thin wall, weld lines, inconsistent wall thickness, plus material and process variations. Ad- ditional errors include difficult-to- process materials and demanding appli- cations where there is zero fault toler- ance. Seeking to design the next generation multi-layer die to overcome these chal- lenges, the engineers at Guill looked for a way to incorporate this technology into an updated version of the 800 Series. This led to the creation of the 800 Series Hybrid. The inherent benefits of the 800 Series are retained, including compact design, low residence time and a com- mon deflector bore that eliminates toler- ance stack up. The challenge was to create a hybrid design that incorporates the benefits of layer overlapping, while reducing unnecessary complexity and making the technology more cost-af- fordable for customers. This was achiev- ed by overlapping layers in each semi-de- flector, using a single cone. The highly efficient design of the 800 Series Hybrid reduces cost and size, as opposed to oth- er methods of overlapping layers. Essential benefits of the 800 Series Hy- New 800 Series Hybrid Extrusion Tooling announced ting capability, in association with the ex- trusion speed, cuts the finished product to length. While cost and value stream activities are reduced, quality is improved. Only one extrusion run is needed to produce a fi- nished product, as opposed to multiple extrusion runs with tooling changes along with a manual assembly operation to connect different tubing shapes. Guill’s new reciprocating head eliminates an assembly operation. It also eliminates in-process inventory. Thus, there is no need for storage of various tubing shapes and connectors needed for as- sembly, fulfillment of orders and reple- nishment of finished goods. Furthermore, the reciprocating head eli- minates a connecting piece, allows JIT production and products made-to-order. Lastly, it reduces total run time from re- ceiving the order to shipping.