Extrusion 7-2019

ses with customization available depend- ing on end product. Davis-Standard feedscrews accommodate the full range of extrusion and converting applications including blown film, blow molding, cast film, compounding, elastomer, extrusion coating, fiber, laboratory, pipe, profile and tubing, reclaim, sheet and specialty systems. Sales and service engineers work alongside customers to find the right solution based on manufacturing ➠ Davis-Standard, LLC https://davis-standard.com/service- support/parts-and-upgrades/ parameters. Testing and trials are availa- ble to fine-tune the process prior to pur- chase. In addition to design, Davis-Standard’s feedscrew manufacturing process re- flects quality from start to finish. Plasma arc welding stations provide wear-resis- tant materials such as Colmonoy 56 and 83. Three state-of-the-art whirlers are used for screw cutting and milling for screws made of stainless steel, 4340 steel or Inconel materials. These machin- es produce screw surfaces at very tight tolerances. After screws are milled and polished, they are treated with chrome plating or other wear-resistant coatings based on application. Screws receive a final inspection and polish before ship- ment. ➠ Guill Tool & Engineering Co., Inc. www.guill.com and more precise concentricity adjust- ments without loosening the face bolts. Easy-Out inserts for the adjusting bolts also allow simple replacement of locked or damaged adjusting bolts, which fur- ther saves on repair and downtime. Another innovative feature of this new rubber/silicone crosshead is a cast alumi- num liquid-fed cooling sleeve that allows the user to switch out the cooling jacket in the event of a line obstruction, again reducing downtime compared to tradi- tional integrated cooling systems. The NEW 500 Series crosshead with MAGS gum space adjustment is a drop- in replacement on most existing NRM lines, however this crosshead design can also be adapted to fit any extruder de- sign or line layout. The addition of a newly designed flow inlet channel reduces the shear and heat n Guill Tool introduces the NEW 500 Series crosshead with MAGS gum space adjustment. The 500 Series is designed specifically for the flow characteristics and unique processing challenges of elastomeric compounds. One of the key features engineered by Guill on this new crosshead design is the mechanically as- sisted gum space (MAGS) adjustment system. This new method of gum space adjustment allows the operator to make an effortless adjustment from a single point using a common socket wrench. No more need to struggle with multiple nuts and bolts in order to adjust gum space, which leads to faster adjustments. The visual indicator on the core tube al- lows the operator to see how far the gum space has been moved, making those adjustments much more accurate and repeatable. The hardware-free and patented cam lock design of the NEW 500 Series from Guill means no time is wasted unbolting and re-securing fasteners for disassembly and re-assembly. Only half of a rotation of the cam nut is required to loosen and automatically extract the deflector from the head body, which is another time saver. Also, with no undercuts on the de- flector, there are no material hang-ups when extracting the deflector, allowing for faster and easier cleaning and changeover. The NEW 500 Series also features the lat- est Center-Stage concentricity adjust- ment system that significantly reduces pressure on the tooling, allowing easier New 500 Series Rubber/Silicone Extrusion Crosshead that is generated as the materials are being processed. This leads to lower head pressures allowing the material to move through the head in a much more balanced and even flow. All crossheads supplied by Guill are fur- nished with a tool kit for assembly and disassembly as well as a detailed opera- tor’s instruction manual. The engineering team at Guill will gladly assist users in the implementation and operation of the NEW 500 series crosshead. For a video of the NEW Guill 500 Series crosshead with MAGS gum space adjust- ment, please go to: https://youtu.be/jeNovmMtcBs Guill Series 500 crosshead with Mechanically Assisted Gum Space (MAGS) adjustment…specially designed for the flow characteristics of elastomeric compounds 105 Extrusion 7/2019