Top-quality performance and unrivalled cost savings in calendering and de-watering will be presented to textile finishers attending exhibitions such as Texfair 2013 in Coimbatore to be held during December 13-16 next.
Latest equipment from specialist UK producer Richard Hough Ltd. (RHL) features unique recent technological breakthroughs in calender bowls and squeeze roller coverings, including the novel Resilio high-expression rolls based on specially-developed rubber compounds for the ultimate in liquid extraction.
RHL, headquartered at Bolton, Lancashire, has a proud 200-year history of manufacturing calender and de-watering rolls for the textile processing industry, supplying to major European-based OEMs such as Ramisch Guarneri, Andritz Kuesters and Benninger, to name a few, as well as pioneering its own technology for these applications.
RHL expertise in cotton bowl manufacture enables the longest cotton fibres to be oriented around the bowl circumference, while still achieving maximum bowl hardness of 83 Shore D. This gives the bowl superior elasticity, combined with extreme durability, producing a soft feel in the finished fabric – features which no other bowl manufacturer can match.
The world-famous Roberto roll was named after its inventor, Robert Oliver, of David Bentley/Modern Rollers, and many thousands of these rolls have been sold worldwide. Since 2005, RHL has owned the Roberto technology, which uses a special micro porous covering as a high-performance replacement for conventional rubber or PU rolls, for efficient liquid extraction from woven, knitted and nonwoven fabrics.
RHL’s latest developments are the Syncast polyamide rolls and sleeves and Resilio rubber squeezing rolls.
Syncast products are made on the world’s most technically-advanced centrifugal casting machine, operating at 2000 metres per minute to produce a polyamide sleeve of far superior quality to the outdated extruded type, without impurities or air bubbles. The Syncast rolls are based on a highly-elastic thermoplastic polymer, specially developed for textile calender rolls. They offer high performance and rapid payback, eliminating the need for a major calender rebuild.
The Resilio rubber covering breakthrough is RHL’s latest patent-applied-for development. It is a 2-layer compound giving 30 per cent better extraction than the previous leading cover. Taking squeeze roll expertise a revolutionary stage further, the latest Resilio high-expression rubber squeezing rolls combine the best features of the existing hard and soft covering compounds to create a unique, dual-layer squeezing concept. The hard sub-layer acts as the nip, while the softer top layer pushes into the fabric interspaces, where water droplets gather. Continuing advances with the Resilio, based on a novel compound material, have now enhanced the dewatering effect still further.
Both the Roberto and the Resilio extract the maximum liquid from the fabric, achieving 30 per cent less residual moisture than normal rubber rolls, with consequent massive cost savings.
A further addition to the squeezing range is the RoberteX fibre roll, similar to the Roberto but it will perform in all aggressive textile processing environments and is an ideal choice for use in harsh caustic or acidic environments with an operating PH range of 0-14.
The RHL squeezing range is complimented by their MaxExtractor range of rubber coverings for all applications, as used by major machine makers.
In addition, RHL Bowmax bowed rolls offer superb quality and runnability, eliminating creasing and giving a straighter, smoother profile for all types of webs.
Anti-deflection technology
A further breakthrough is the development of anti-deflection technology. RHL can design Roberto or Resilio squeezing rolls on an anti-deflection shaft so that complicated parabolic cambering is no longer necessary. This means that accurate and efficient squeezing can be carried out for many years, making local regrinding completely possible because a parabolic camber is no longer necessary.
Says the RHL Managing Director, Mr. Anthony Ashton: “The full RHL range provides unbeatable options in squeezing and calendering technology for finishers in India. With the assistance of our highly reputable representative, Mr. M.S. Gaur, we are looking forward to introducing the enormous benefits of these products to the crucial southern areas of Tirupur and Coimbatore. We are delighted to have the chance to participate in the exciting future growth potential of a region which is a major leader in textile manufacturing.”