A space-saving high-speed production line for PP and PS packaging, a new option for “not dry” PET among Orlando highlights. #npe
According to reports, PTi's latest high-speed sheet extruder for PP and PS packaging has a reduced footprint and can provide the highest throughput/square foot in the market.
The machine manufacturers of NPE2018 are meeting the demand for speed. In addition, the company claims that the latest Super-G HighSPEED extruder from Processing Technologies International (Booth W6744) has significantly reduced the footprint, thus achieving the highest extrusion output/square foot in the industry. This compactness is achieved by introducing optional down-folding motors on these models, which are used to process PP and HIPS for packaging. Several machines have been installed in the U.S.
The Super-G SGHS3000-36D model of PTi on display adopts a vertical U-shaped configuration and a down-folding motor, which can reduce the footprint of the machine by more than 33% to 12 feet 8 inches, while the original model is a 17 feet 7 inch model. The Super-G SGHS3000-42D model also offers a folding option, showing a comparable footprint reduction and similar output gain.
Super-G SGHS3000-36D is equipped with a 500-horsepower motor with a maximum speed of 1000 rpm, while Super-G SGHS3000-42D is equipped with a 600-horsepower motor with a maximum speed of 1200 rpm. For processing PP, the output of Super-G SGHS3000-36D is about 3000 lb/h.
There is a new option for the "non-drying" PET sheet system. Battenfeld-Cincinnati's STARextruder series (Booth W2771) has a three-part processing unit: a single screw area for material plasticization; a planetary roller part for degassing under high vacuum; and an optimally sized discharge area. According to reports, the planetary roll degassing zone can efficiently degas the melt. The melt is spread into a very thin layer, forming a very large surface area. It is said that both of these effects can counteract material degradation and significantly improve product quality.
Sheet processors can switch from PET processing to PP or PS processing on this extruder without having to replace the screw. PET flakes can be processed without pretreatment. The process has recently received a no-objection letter from the FDA. STARextruders are available in sizes of 3.5, 4.75 and 6 inches, and output ranges from 1300 to 2600 lb/h.
Gneuss Extrusion Technology (Booth W6473) demonstrated a complete Gneuss processing unit (GPU), which consists of a multi-rotation system (MRS) 130 extruder, a fully automatic melt filtration system (RSFgenius 150) and a VIS online viscometer. This production line is used to process undried, uncrystallized PET at speeds up to 2000 lbs/hr.
Gneuss now offers a new foam module that allows processors to quickly switch from solid foamed PET sheets to physically foamed PET sheets. Foam boards with a weight reduction of 50% can be extruded from up to 100% post-consumer materials (depending on the process) with consistent cell structure and mechanical properties.
Graham (Booth W2743) will showcase the Welex Evolution sheet production line, which is a complete sheet, winding and online thermoforming production line equipped with XSL Navigator controls. Although the equipment on display at NPE2018 will be used for thin-profile PP, the Evolution system can be customized in widths from 36 to 90 inches, specifications from 0.008 to 0.125 inches, and throughput up to 10,000 pounds per hour. Provide single-layer or co-extrusion system, and can be equipped with up to nine extruders.
In most extruded products, material cost is the biggest cost factor, so processors should be encouraged to reduce these costs.
Thin sheet production presents some unique challenges to extrusion operators, including the following 10 common considerations
Poorly designed profile molds-which do not allow parts to be extruded at the same size from run to run-coupled with a lack of understanding of the extrusion process, are one way to generate waste.
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