- Email: [email protected]
Feeder developed for masterbatch applications
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New pellet screener removes off-size material According to US company Rotex Inc, its new Plastic Pellet Screener is the ideal solution for compounders that need extremely accurate removal of off-size material. The company explains that the pellet screener is the first of a new line that employ a horizontal gyratory/reciprocating motion, and a 'DualVelocity' drive with a positive displacement stroke to achieve unmatched removal of oversize and longs. Rotex adds that the long stroke, gyratory motion - four times as long as vibratory screeners - spreads pellets evenly across the full width of the unit. The motion then stratifies the material for exceptionally efficient fines removal and separation of the oversize from the on-spec pellets. Good pellets are not removed with the oversize, claims the company. The Rotex motion contains no vertical component, so long pellet 'toothpicks' and 'jack-
straws' remain flat on the screen deck. They cannot upend or pass through the screen with the on-spec pellets, as they often do with vibratory screeners. For increased accuracy, a double pass option is available to screen pellets twice. Rotex claims that the final product can be up to 99% free of longs 0.9-5mm (0.375-2 inches). According to the company, the reliable, low maintenance 'Dual Velocity' drive operates at low speeds, reducing noise and wear on components and minimizes vibration with a counter-weight drive. The screener is claimed to be easily disassembled and reassembled for regular maintenance or for cleaning between batches, and is portable and simple to move off-line. The Rotex Pellet Screener is said to have a compact footprint and lower silhouette than most other screening machines. It has an installed height as low as 69 cm (27
The new Plastic Pellet Screener from Rotex Inc. inches). Mounting options include casters, kick-down legs or a stand. When running longer batches without interruption for cleaning, variable frequency tappers can be added for additional control of screen blinding, without the use of mesh cleaning balls. The company adds that optional stainless steel wire screens, perforated plates or a combination of the two can be installed to meet any separation requirement.
The Rotex Plastic Pellet Screener is claimed to handle capacities of up to 1500 PPH. Pellet screeners for higher capacity screening of up to 30,000 PPH with the same gyratory/reciprocating motion, accurate separation, compact design and installation configurations, and easy cleaning are also available. Contact: Rotex Inc. Tel: +1 800 453 2321 E-mail: [email protected].
Feeder developed for masterbatch applications The Feeder Group of K-Tron International has introduced the K-Tron Quick Change/Quick Clean T35/S60 feeder. The company says that it was first designed with the needs of the masterbatch industry in mind. This feeder allows the customer to change from a single screw S60 screw configuration to a twin screw T35 screw configuration quickly, as material needs change. This is
said to be ideal for short customized runs. K-Tron adds that the feeder is available with two bowl/screw sets that mount to the same gearbox and can be cleaned and swapped in minutes. It is easy to disassemble and clean, enabling quick change over in production, while minimizing down time and installation costs. It is available in both volumetric and gravimetric models.
Plastics Additives & Compounding September/October 2003
The Quick Change/Clean feeder from K-Tron.
18
According to the company, the Quick Change/Clean (QC) feeder is ideal for applications where only one feeder must feed a large variety of products, where a 'super clean' execution is required and where product contamination is not allowed. Contact: K-Tron Feeder Group Tel: +1 856 589 0500 Fax: +1 856 589 8113 E-mail: [email protected]
News
New pellet screener removes off-size material According to US company Rotex Inc, its new Plastic Pellet Screener is the ideal solution for compounders that need extremely accurate removal of off-size material. The company explains that the pellet screener is the first of a new line that employ a horizontal gyratory/reciprocating motion, and a 'DualVelocity' drive with a positive displacement stroke to achieve unmatched removal of oversize and longs. Rotex adds that the long stroke, gyratory motion - four times as long as vibratory screeners - spreads pellets evenly across the full width of the unit. The motion then stratifies the material for exceptionally efficient fines removal and separation of the oversize from the on-spec pellets. Good pellets are not removed with the oversize, claims the company. The Rotex motion contains no vertical component, so long pellet 'toothpicks' and 'jack-
straws' remain flat on the screen deck. They cannot upend or pass through the screen with the on-spec pellets, as they often do with vibratory screeners. For increased accuracy, a double pass option is available to screen pellets twice. Rotex claims that the final product can be up to 99% free of longs 0.9-5mm (0.375-2 inches). According to the company, the reliable, low maintenance 'Dual Velocity' drive operates at low speeds, reducing noise and wear on components and minimizes vibration with a counter-weight drive. The screener is claimed to be easily disassembled and reassembled for regular maintenance or for cleaning between batches, and is portable and simple to move off-line. The Rotex Pellet Screener is said to have a compact footprint and lower silhouette than most other screening machines. It has an installed height as low as 69 cm (27
The new Plastic Pellet Screener from Rotex Inc. inches). Mounting options include casters, kick-down legs or a stand. When running longer batches without interruption for cleaning, variable frequency tappers can be added for additional control of screen blinding, without the use of mesh cleaning balls. The company adds that optional stainless steel wire screens, perforated plates or a combination of the two can be installed to meet any separation requirement.
The Rotex Plastic Pellet Screener is claimed to handle capacities of up to 1500 PPH. Pellet screeners for higher capacity screening of up to 30,000 PPH with the same gyratory/reciprocating motion, accurate separation, compact design and installation configurations, and easy cleaning are also available. Contact: Rotex Inc. Tel: +1 800 453 2321 E-mail: [email protected].
Feeder developed for masterbatch applications The Feeder Group of K-Tron International has introduced the K-Tron Quick Change/Quick Clean T35/S60 feeder. The company says that it was first designed with the needs of the masterbatch industry in mind. This feeder allows the customer to change from a single screw S60 screw configuration to a twin screw T35 screw configuration quickly, as material needs change. This is
said to be ideal for short customized runs. K-Tron adds that the feeder is available with two bowl/screw sets that mount to the same gearbox and can be cleaned and swapped in minutes. It is easy to disassemble and clean, enabling quick change over in production, while minimizing down time and installation costs. It is available in both volumetric and gravimetric models.
Plastics Additives & Compounding September/October 2003
The Quick Change/Clean feeder from K-Tron.
18
According to the company, the Quick Change/Clean (QC) feeder is ideal for applications where only one feeder must feed a large variety of products, where a 'super clean' execution is required and where product contamination is not allowed. Contact: K-Tron Feeder Group Tel: +1 856 589 0500 Fax: +1 856 589 8113 E-mail: [email protected]