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New Microbatch for colouring thermoplastics - Perfect colouring - tailor-made with micro-granulates
10/21/2011 |
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Innovative colouring of thermoplastics with Novopearls micro-granulate
"Colouring without compromise" is Novosystems? mantra for Fakuma 2011. For the first time Novosystems is introducing a completely new micro-granulate at Fakuma. Under the Novopearls name, the granulate combines the best features of liquid colours and conventional granulate batch material. Novopearls is a solid material possessing the characteristics of liquid colours yet making a higher degree of coloration possible and offing cost savings in comparison with conventional colour batches.
The newly-developed Novopearls micro-granulate now fills the gap between liquid colours and conventional batch granulate. The spherical micro-granulate with an average diameter of 450µm, comprises a special wax mixture, which can be extremely well homogenized with numerous thermoplastics. For the first time it has been possible to use the positive characteristics of liquid colours with higher levels of coloration (liquid colours max. 3% filling volume) while simultaneously reducing the amount of batch material added.
New Characteristics and Greater Efficiencies
Novopearls is highly pigmented, can be mixed together, is dust-free and has low viscosity. The real highlight, however, is its melting-point of 85ºC. The micro-granulate melts in the screw faster than the basic plastic material to be coloured. This means rapid, streak-free homogenization of the colour and the plastic, something which up until now could only be achieved with liquid colours. Above all, Novopearls scores highly in terms of its cost-effectiveness, making affordable coloration possible. As a result of optimally dispersed pigments in the wax-based granulate, very small amounts of additives - between 0.1% and 0.9% are possible. Novosystems claims cost savings can be as high as 20% to 30%.
Perfect Dosing Now Possible
Due to a tiny grain size of 450µm, Novopearls can be dosed extremely accurately. The user has three dosing options: adapting the screw feed to all granulate conveyor appliances used on the production line or alternatively deploying dosing machines from Novosystems or MCBalance from Movacolor. "Hardware flexibility for dosing Novopearls is both technically convincing and cuts costs" says Rainer Hoop, managing director of Novosystems, "As a result, modification or investment costs are extremely low. "Whichever solution the user chooses, the dosing machines enable maximum control of dosage amounts with no pulsation effects at high volumes."
Best Coloration Results
Novosystems offers ready-to-use colour batches or the user can mix his own colour from 15-24 mono-batches. Utilizing additive colour mixing, the user can tailor coloration to his own requirements. A special coloration system comprising colour measuring equipment and recipe software with an integrated colour database makes the flexibility and creativity of Novopearls possible. These tools naturally enable reproducible coloration.
The Characteristics of a "Liquid Solid"
For the first time Novopearls micro-granulate opens up the possibility to make use of the characteristics of liquid colours and avoid the well-known disadvantages of granulate materials. On the one hand it is significantly more cost effective than using conventional granulate and on the other hand, due to specific pigmentation, allows a higher degree of coloration than liquid colours. Very small amounts of added material and excellent homogenization result in a cleaning effect comparable to liquid colours. Abrasion is reduced making cleaning agents unnecessary. Dust formation is no issue with Novopearls. Time-savings gained through quick colour changes present the user with a high degree of flexibility.
Website: www.novosystems.de
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Related Exhibition:
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FAKUMA 2011
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International Trade Fair for Plastics Processing
10/18/2011 - 10/22/2011
Venue: Friedrichshafen Exhibition Centre, Friedrichshafen, Germany
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