EuroWire March 2018

Technology News

Stretch film line redefines modular efficiency ▲ ▲ Davis-Standard’s S3 winder, which enables maximum slit widths for hand-wrap, machine-wrap and jumbo rolls to support multiple market segments

speeds, providing quality winding and wound roll formation. The air-venting idler roll finish locks film on the rolls at low tension for tracking and roll edge straightness. In addition to system components, an over-the-line mezzanine accommodates a smaller footprint, while also enabling safe servicing of the extruders, screen changers, melt pipes and associated control systems. With the unique ‘through-the-mezzanine feedblock riser’, there is safe and convenient access to the selector plug for layer-sequencing changes. Selector plugs can be changed with minimal downtime allowing product flexibility in layer-sequencing to easily accommodate production schedules. Davis-Standard LLC – USA Website : www.davis-standard.com

Films discharge out the front of the line to a common side to simplify roll packing and future automation. Cores are also same-side loaded from the back to prevent disruption of packing activities. There is an auxiliary lay-on roll to eliminate top-wind waste during transfer, optimising roll quality and eliminating outer wrap transfer waste. High-volume core bins minimise refilling frequency and feature a simultaneous core set discharge of multiple core lengths while also decreasing cycle time, improving slit-width flexibility and net film utilisation. Core widths can be changed on the fly to maximise uptime. There is a 30-second cycle time regardless of the number of slit widths, which is ideal for hand-wrap products. A pull-through trim system eradicates trim jams into the granulator regardless of line speed or film thickness. Motor-driven web support rollers with an air-venting finish improve film transport at high line

DAVIS-STANDARD has engineered a stretch film line that redefines modular efficiency for high-grade film operations. Installed in early 2017 for a large-scale North American film producer, this technology is the new standard for stretch film line configurations due to multiple operator and production advantages. These include a compact machine arrangement, ease of operation and servicing, excellent profile control, consistent roll quality and an intuitive control package. The system is engineered for producing thin films from 31- to 51-gauge (7.8µ to 13µ) at high speeds. Davis-Standard’s side-by-side DS S3 overlapping winder is essential to this capability. The S3 winder enables maximum slit widths for hand-wrap, machine-wrap and jumbo rolls, supporting multiple market segments on one winder.

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March 2018

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