Keywords
Citation
(2000), "Filtration for Speciality Coatings", Pigment & Resin Technology, Vol. 29 No. 6. https://doi.org/10.1108/prt.2000.12929fad.002
Publisher
:Emerald Group Publishing Limited
Copyright © 2000, MCB UP Limited
Filtration for Speciality Coatings
Filtration for Speciality Coatings
Keywords Reiss Engineering, Speciality Coatings, Filtration, Coatings
Speciality Coatings (Darwen) Limited report that they have improved efficiency, economy and flow rates in final filtration of PVC Plastisol, following installation of four DCF self cleaning filters from Reiss Engineering Ltd two years ago. An annual output of 5,000 tonnes of PVC Plastisol from the plant is supplied to manufacturers of top quality wallpapers in the form of vinyl base paper rolls as well as liquid filled containers.
The four Roningen-Petter DCF Filters with 100 micron elements are located where impeccable product quality is vital: between the mixing plant and feed lines to tanker loading or the vinyl base coating machines (Plate 2). Air operated diaphragm pumps generate a pressure of 60lb/in.2. The previous bag filtration system involved high maintenance, bursting fabric failures and a bottleneck in the process where filtration of one Tonne of PVC Plastisol took 30 to 40 minutes. DCF self contained filters are reported to have reduced this time to 10 minutes with the benefits of minimal maintenance, robustness and clean operation.
Plate 2 DCF
self cleaning filters installed at Speciality Coatings plant
Ronningen-Petter DCF liquid filters supplied by Reiss Engineering are said to offer process engineers the benefits of advanced "Clean-in-place" technology.
According to the manufacturers, they are designed for removal of suspended solids from 15 to 6,250 microns, typically in the production of paints, inks, pigments, adhesives and coatings. The system incorporates the "travelling doctor" concept of filter element cleaning which maintains productivity without downtime for filter replacement. This factor combined with reduced operator requirement and absence of waste disposal problems is said to mean that pay-back timescales can be swift or even immediate.
Details available from: Reiss Engineering Ltd. Tel: +44 020 8204 7155; e-mail: enquiries@reisseng.co.uk