machinery feature | Converting & bag-making equipment
CMD’s global bag machine and winder uses continu- ous motion sealing to offer a wider processing window
lengths, and a pulse-heated sealing bar. All parameters for bag production – such as forward feed length, throughput and sealing time – can be configured using a touch screen. Bag widths of 400mm and lengths of 15-4000mm can be produced. Rolls can be changed in a few simple steps. Film thickness can be varied between 20 and 200 microns. Applications include UV-proof packaging for
cytostatic infusion lines and anti-static bags for PCBs and other sensitive electronic components. At the recent Fachpack event in Nuremberg, it
presented a film revolver has for use with the mini- BagBoy. It allows different films to be held in reserve directly on the machine. All that remains is to thread the film in – and production of bottom-seam bags can begin. The new revolver has six material axles and can receive film rolls in widths up to 400mm.
innovations, such as the wire sealing system and the upper and lower cross sealing bar with carbon fibre – which, along with the independent cross cutting station, will work at higher speeds than the previous version. The design also significantly reduces the wear of
mechanical parts, and the cost of maintenance. The mini-BagBoy from Joke Folienschweisstechnik
W&H show- cased a
number of bag making technologies at its recent open house event
is a compact automatic bag-sealing machine – slightly larger than a desktop printer – that can be intuitively operated, is easy to service and produces small production runs of different bag sizes. It is aimed at manufacturers of small components, or those who need to perform lots of different tasks. It manufactures bottom-seam bags within a small
space and only requires a 230-volt power supply – and no compressed air. However, it still offers state-of-the- art technology, according to Joke: scissor-cut blade, stepper motors for precise forward feed with exact bag
Heavy work At its recent open house event, Windmöller & Hölscher showcased a number of innovations, including several for the production of heavy duty sacks. “With the variety of available production technolo- gies, what matters in the end is sack functionality,” said the company. “In addition to mechanical properties that protect and secure transportation of heavy sacks, processability and film printability play a vital role in downstream converting.” For example, slitters on a Varex or Optimex blown film
line can turn the tubular film into flat material that will be printed on a Miraflex flexographic press, then formed into a tube on the Polytex tuber. An alternative method is to print the tubular film as it comes off the blown film line, in an in- or off-line process, and add side gussets. For those types of product, W&H has extended the
range of Optimex blown film lines with a model dedi- cated to form-fill-seal (FFS) film, which has a working width of 650mm. Optimex FFS produces three-layer film tubing at high speed. All components of the line are tailored for the production of FFS film tubing. A new inline printer was also seen at the event. It
enables economical printing of sacks and will be available in 4 or 6 colours, offering flexibility in the positioning of the printed image on the front and back of the film tubing.
Capacity expansion South African converter CTP Flexibles has recently expanded its business by installing five Titan ER610 compact slitter rewinders from Atlas Converting. The machines – one 1650mm wide, the others of 1350mm – help it to meet increasing demand. “We are enjoying record sales and are now operating
26 FILM & SHEET EXTRUSION | December 2012/January 2013
www.filmandsheet.com
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