machinery | Printing
Right: Comexi’s F2 ML flexo
press delivers high print
quality at high speeds
such as its Platinum and Excel models, which can deal with both short and long runs.
Gravure event For its part, Bobst showcased its gravure technologies at a recent in-house event in Italy. Giovanni Caprioglio, sales and
marketing director for gravure and lamination products at Bobst Italia, pointed out two main areas of improvement in the latest configuration RS 6003C HS gravure press: a new dryer technology; and an improved inking system. Both have been developed to take performance, ergonomics and safety, environmental sustainability and energy savings into account. He said that the quantum efficiency of the new
twin-flow drying system enabled the length of the dryers to be shortened, and the residual solvent on the web to be reduced to “unprecedented levels” – as well as having a knock-on effect on other functions, to improve overall press performance. “When the ‘know-how’ is supported by the ‘know-
why’, technology can be truly effective,” said Caprioglio. “It succeeds in maintaining the focus on creating real value in each of the markets we serve.” Later, the company demonstrated a nine-colour RS 6003C HS gravure press, with a 1300mm print width. The demonstration began with the press rapidly
achieving a speed of 500m/min printing in reverse with solvent-based inks on a 17 micron BOPP film to produce a typical high-end high volume confectionery pack, followed by an automatic splice on the rewinder at full speed. The company has reduced the noise of the machine at higher speeds, achieving a 5dBA reduction. The twin flow air circulation design of the semi-
flotation dryers is a first for the industry, says Bobst. While the dual impingement and floatation technology
Xaloy® Screw & Barrel Technology
is not new for Bobst, the company says it is the first manufacturer to apply it on a gravure printing press – and can generate an increase of up to 15% in drying performance. Bobst also demonstrated its RS 6002C shaftless
gravure press – presented last year at Drupa but not previously seen at an open house – processing an 18 micron LDPE substrate. The demonstration started with the press make-
ready, using the TAPS system, which is part of the RS 6002C standard supply. The press was accelerated to 300m/min printing speed, performed a splice on the rewinder and was brought to a halt. The tenure of the register remained accurate, said
Bobst, making the press ideal to print sensitive substrates at high speed – which are notably critical to process in gravure – and for handling thinner materials for the production of packaging, which are less costly to produce and also fully recyclable.
Added competence RKW has invested more than €5 million in its plant at Echte in Germany to boost its printing competence.
Xaloy®
PLA Screw & Barrel Technology -
Meeting Your Injection and Extrusion Needs! Proprietary Xaloy®
Xaloy® screw designs tailored to specific resin
grades provide superior homogenization with improved temperature control, excellent wear resistance and improved end product quality
bimetallic barrels with a Xaloy® X-800® barrel inlay for
exceptional wear performance with corrosive polymers for longer working life
Proven Technology • Extended Working Life
WWW.NORDSONPOLYMERPROCESSING.COM
EXTRAORDINARY TECHNOLOGIES FOR TODAY’S PLASTICS
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58
