Weingrill Water-Jet Tail Cutter for drying sections
By julia, Nov 4 2019 03:19PM
To achieve high reliability and performance, most paper machines have dry-ends equipped with fixed or rotating blade tail cutters that can provide an acceptable cut quality under well-defined operating conditions - limited basis weight range, high paper dryness – and, importantly, assuming the use of a well sharpened blade.
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Weingrill, however, has developed the HP-Waterjet, the working principle of which is based on high pressure water usage. It comprises one pumping station providing high pressure water and one nozzle to turn the applied pressure into a high velocity water jet; paper can then be “cold cut” without any change to its chemical and physical properties.
Suitable for all kinds of paper and board, including coated grades, the HP-Waterjet has been designed to provide an alternative tail cutting system to traditional blade tail cutters and is an excellent tool to better manage the tail threading process. As there is no mechanical contact with the paper, it provides a dust- and drag-free cut with reduced threading downtimes. Also, non-contact cutting eliminates inevitable wear and replacement and associated time losses related to service and maintenance of rotating (or fixed) blades. As lower cutting forces are exerted on the paper, stronger sheet edges and reduced web breaks are further advantages.
HP-Waterjet advantages include:
-Not subject to wear and so does not require continuous service
-Tliminates airborne dust, significantly reducing paper breaks. Also improving the working environment -The narrow size of water jet guarantees efficient paper cutting at high speed without disturbing or breaking the sheet
-Due to the lower cutting force, the cutting operation is faster and smoother, improving efficiency
-No physical adjustments required and not influenced by profile variations or sheet fluttering
-The cutting head has more flexible mounting options including dryer fabrics, or in open draws
-A compact cutting device - can be installed in relatively old and narrow dry end fabric runs
-Produces sharper, stronger sheet edges than a knife or rotary blade
Further information available from Jarshire Ltd
01753 825122 www.jarshire.co.uk September 2019