processing feature | Pellet screening Quick release clamping is employed for rapid cleaning
and mesh screen changing – Russell-Finex says that one operator can dismantle the screener, replace a
mesh screen and reassembly within a matter of minutes. The Russell Compact Sieve is now available in
five different sizes, ranging from a 10 in (254 mm) lab unit up to a 60 in (1,524 mm) production scale unit. All sizes are now also available in
fully stainless steel construction. In addition, the company supplies Finex
Rotex developed its Plastic Pellet Screener specifically for compounders
while a patented dual velocity drive accelerates discharge of longs. The screener is simple to maintain, with quick deck
access and lightweight parts. Perforated plate decks are easy to disassemble without tools, so routine cleanouts for colour changes require less than 10 minutes. Rotex says that its Plastic Pellet Screeners have low
A Finex vibratory
separator, as used by
Accurate Color & Compounding
headroom requirements and provide reliable, low- maintenance operation. The machines run at a low speed to reduce noise, and the counterbalanced drive ensures effective vibration isolation. A smaller footprint and flexible discharge configurations allow for straight- forward retrofits in existing layouts. Rotex offers two installation options. Double Pass is a dual-deck arrangement which provides a second screening step to improve longs removal. The first pass is on the top deck, where over-length pellets and fines – typically 10 mesh (2 mm) – are removed. Product is then re-screened on a second deck below for efficient removal of longs 3/8” (9.5 mm) and larger. ❙
www.rotex.com
Russell-Finex, supplies fine mesh separation systems from its headquarters in the UK as well as its facilities in the US, Belgium and India. It recently extended its range of vibrating screens sold under the Russell Compact Sieves brand. The compact and easy-to-clean machine
features a high-performance rubber suspen- sion system instead of conventional spring arrangements. According to the company, this gives quieter operation and transfers significantly more vibra- tion to the mesh screen surface. Combining this with its straight-through design, allows for much higher flow-rates and improved separation.
48 COMPOUNDING WORLD | May 2012
www.compoundingworld.com
vibratory separators, which also use the rubber suspension design. One company that is using such systems for screening pellets is Accurate Color & Compounding of Chicago, USA. The
manufacturer of colour and additive masterbatches is using Finex separators to automate quality control. It says that they provide increased production uptime, better yields and more accurate screening. ❙
www.russellfinex.com
Sweco of the USA has developed its DC Classifier as a multi-functional machine that dries, cools and classi- fies plastics materials in one unit. It uses either positive or negative air flow to draw moisture and heat away from the particulates to dry and/or cool the material. Material continues through the machine to the classifi- cation stages where oversize and fine particles can be removed. The DC Classifier has modular decks that can be easily removed for cleaning in-between material or colour changes. The company has also recently launched its new Fusion
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