Ultrafine - Flame retardants - Addivant

Kunststoffe international, 2005-11-21, Functional Filler: Precipitated Calcium Carbonate in PVC
...of the Ca/Zn stabiliser system during artificial weathering. Nevertheless, the lower thermal stability of this stabiliser system during profile production and processing must be taken into account. Further developments will involve ultrafine, surface-treated calcium carbonates. References The extensive list of references can be called up from the e-mail address hein-dieter.stoever@schaeferkalk.de. The Authors Dr.-Ing. Marijan Vučak, born in 1967, is responsible for the development of fill...

Kunststoffe international, 2005-11-21, Lotus-Effect – Now and in the Future
...with lotus-effect must not only be hydrophobic but also require a structure of nanometer dimensions (remember that a nanometer is a millionth of a millimetre). This results at first sight in apparently insoluble problems. How can these ultrafine structures be protected from weathering, let alone mechanical stresses? The fact that work to improve conventional easyclean surfaces is still continuing on a broad front today (e.g. shower cabins, tiles and sanitary ceramics) shows that there is obvious...

Kunststoffe international, 2005-11-21, Material Handling under Clean Room Conditions
... since been established through comprehensive testing. The separators have no baffles whatsoever, are completely filterless and are connected to the central feed system (Fig.3). A newly developed classifier (Fig.4) serves to separate the ultrafine dusts from the PE-X granules and has made an important contribution to improving quality in cable mixtures. It should be placed as close as possible to the extruder inlet. The classifier consists of three separation stages one above the other, working ...

Kunststoffe international, 2006-01-15, A Status Report (2): Versatility for Mass Production in MuCell Injection Moulding
...ssure method have almost the elongation at break of unfoamed PC: With gas counterpressure, with a 5.5% density reduction, around 90% of the elongation at break of unfoamed PC was measured, but hardly 10% without gas counterpressure [3]. Ultrafine Cell Structure with Gas Counterpressure and Precision Opening The mode of operation of MuCell injection moulding, together with precision mould opening, was already described in part 1 of this article [1]. In the studies on 160mm x 20mm x 4.24mm test b...

Kunststoffe international, 2006-08-02, Thermal Balance: Conformal Cooling on the Advance
...very day. A relatively newly launched technique, which has already gained wide attention, is direct laser forming. This process generates a mould insert from a metal powder bed, often with an original mould making material, such as DIN No. 1.2343. Ultrafine metal powder is placed in a heated chamber on a build platform that can be lowered. A laser directly melts the powder bed, which has been levelled by a slide, according to a 3D model, to directly form the part contour in thin layers, and weld...

Kunststoffe international, 2007-06-18, Improving Product Properties by Cutting Back on Material
...oughened with calcium carbonate filler particles. Polymer 40 (1999), pp. 2347–2365 4. Lazzeri, A. et al.: Filler toughening of plastics. Part 1. The effect of surface interactions on physico–mechanical properties and rheological behaviour of ultrafine CaCO3/HDPE nanocomposites. Polymer 46 (2005), pp. 827–844 5. Cohen, R. E. et al.: Toughening of isotactic polypropylene with CaCO3 particles. Polymer 43 (2002), pp. 3661–3674 6. Gaymans, R. J. et al.: Toughening of polypropylene with calcium carbon...

Kunststoffe international, 2008-02-17, Growth in Specialties
...roduct line manufactured by Sachtleben is a barium sulfate system with the finest particle size currently available, i.e. less than 100nm. Because of its large specific surface area, it is ideally suitable for polymer reinforcement in composites. Ultrafine systems based on barium sulfate are characterized by chemical inertness, thermal stability and good dispersibility. The crystallization behavior of the polymer can also be controlled. Plastics for pharmaceutical applications, e.g. catheters, d...

Kunststoffe international, 2008-04-14, Straps Demand Extremes
... is to be kept constant. That means that the material removal causing the pressure drops for filling the outlet channel is reduced when the intervention limit is reached. With this filtration concept, it is necessary to install a downstream ultrafine filter behind the backflushing screen changer to catch degraded melt particles adhering to the wall, which is released into the filter outlet channel by the introduction of the backflushing plunger. The rotary filtration unit in a comparable system ...

Kunststoffe international, 2013-04-19, Melt Filtration on the Injection Molding Machine
...se developed extrusion filter technology, which Ettlinger launched on the market in 2004. The special feature of these high-performance melt filters (type: ERF) is that they are designed for separating out ultrafine particles down to 80 μm particle size at throughput rates up to 2,500 kg/h. In the filter, the melt arriving from the extruder passes through a rotating filter drum. The particles held back on the filter surface are lif...

Kunststoffe international, 2014-04-14, Melt Filtration: Recyclates with Immaculate Film Quality
The crucial step in the reclamation of highly contaminated plastic materials into film-grade recyclate is the ultrafine filtration of the melt. The new Erema Laserfilter significantly increases the purification efficiency and the separation capacity. With the patented configuration of the melt filtration upstream of extruder degassing, plus the efficient Laserfilter, the TVEplus system from Erema GmbH of Ansfelden, Austria, enables the manufacture of high-quality end products with a significantl...

Kunststoffe international, 2015-07-20, Copper Conductors from the Bath
...lectronic functions in one part to save space and reduce weight.The laser direct structuring (LDS) process patented by LPKF holds a market share of over 50 % – and has the potential to be developed to enter new fields, such as LED technology or ultrafine structuring for chip stacking (e. g. integration of sensors and evaluation electronics in a compact housing). Laser direct structuring is based on parts manufactured from a plastic containing additives. Conventional suppliers offer all important...

Kunststoffe international, 2017-02-23, All Elements at a Glance
...ply the drop-on-demand principle layer by layer in order to generate a finished part. The specially developed inks permit the manufacture of precise metal and ceramic parts. Consequently, the inks, besides containing a flux, also contain ultrafine metal or ceramic particles as carrier material. The manufacturer also offers inks for supporting structures to allow the production of complex structures. The green parts produced by additive manufacturing are subsequently heat treated to produce a com...