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Keywords of this article:  medical 
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North America’s largest plastics and rubber industry trade show, NPE 2015, has served as a platform for US equipment suppliers to showcase their advanced material handling systems and equipment.


Conair offering an MVP

 

Conair unveiled several brand-new material handling products at NPE 2015, including the Dubbed Material Vision Proofing (MVP) and MicroWheel Desiccant Dryers.

The new MicroWheel dryers have a compact configuration that can be mounted on the feed throat of a molding machine or extruder. 

MVP is a next generation material-handling proofing system that uses machine vision to help prevent material contamination due to operator error. It includes a motorized camera that automatically confirms that the connection between material sources and destinations has been made correctly and conveying can begin.

 

Thought to be the smallest desiccant-wheel dryers available, MicroWheel Desiccant Dryers are good choices for medical processors and those running small quantities of expensive engineering resins. Because they use brushless blowers with speed control built in, the dryers can be easily programmed to deliver exactly the right amount of process air flow to dry the different resin volumes.

 

The new small dryers are offered in two basic models: the MW1 and the MW2. Including the hopper, the MW1 units range in height from only 495mm to 704mm and the largest weighs just 48kg.

 

Bulk materials handling expertize from Coperion K-Tron

 

Coperion K-Tron showcased its latest developments in bulk materials handling.

The Coperion K-Tron dual-blower Rail Unload System pneumatically transfers pellets, powder and granular materials from railcars at conveying rates in excess of 54,430kg/h. Dual-blower systems are available with up to 254mm line sizes.

The Coperion K-Tron dual-blower Rail Unload System pneumatically transfers pellets, powder and granular materials from railcars at conveying rates in excess of 54,430kg/h. 

Using separate vacuum and pressure blowers, the Dual-Blower Railcar Unload System unloads material from the railcar at higher conveying rates and for longer conveying distances.

 

A vacuum blower draws material from the railcar to a self-cleaning Coperion K-Tron Filtair Series filter receiver that separates the product from the conveying air. Mounted below the receiver is an Aerolock rotary valve that meters the product into the pressure side of the system for delivery to storage.

 

The company also unveiled its redesigned Smart Flow Meter for precise metering, registering and monitoring of bulk material flows.

 

The Smart Flow Meter provides high accuracy feeding, at high feed rates of up to 200m³/h. Applications include material flow control within a production line, measuring filling or discharge of materials from storage, inventory control, and quantitative bulk goods measurement.

 

The Smart Flow Meter offers gentle handling, lower maintenance costs, reduced headroom and is a cost-effective solution for in-line weighing applications, said Coperion K-Tron.

 

Load cell technology increases accuracy of Maguire’s VBD vacuum dryer

 

On top of its patented VBD vacuum resin dryer, Maguire Products, Inc. has incorporated a load cell technology to increase accuracy and reliability and providing plastics processors with new capabilities for controlling and documenting their use of material.

 

The VBD dryer now uses load cells for continuous control of the resin level in two of the three vessels in the system - the vacuum chamber and the retention hopper. The load cells operate on a loss-in-weight basis, providing real-time data on material throughput that is unaffected by variations in bulk density.

Shown with Maguire VBD vacuum dryer are President and Chief Designer Steve Maguire (left) and Senior Dryer Product Manager Mike Gera. 

They achieve accuracy of +/-0.5%, according to Mike Gera, Senior Dryer Product Manager, Maguire. “Because of their accuracy, they provide molders and extrusion processors with new tools for increasing the efficiency and versatility of their operations,” he said.

 

The load cells enable the microprocessor in the controller to monitor, display, and log throughput in real time. As the first batch of material is conveyed away from the dryer to the processing machine, a throughput rate is calculated. This rate is updated once per minute.

 

Improved control over throughput rate makes it possible to set the rate to precisely match that of the process, enhancing energy efficiency and avoiding an excess of dried material left over at the end of a run.

 

While the VBD dryer provides a continuous flow to accommodate the throughput of a molding or extrusion process, load cells enable the dryer to run batches. For example, with Batch Mode selected in the controller, the operator is prompted to enter a batch size, say 455kg.

 

The VBD will run 455kg and then automatically shut down. The shutdown is anticipated so that the vacuum chamber and retention hopper are empty, which is desirable at the completion of a batch run.

 

According to Maguire, the cost savings achieved with vacuum drying in comparison with standard desiccant dryers result from a reduction in energy consumption of more than 60%.

 

In addition, resin is exposed to elevated temperature for as much as 80% less time than with the desiccant dryer, which means less processed-in stress.

 

Improved underwater pelletizing system from Nordson BKG

 

For Nordson BKG, new equipment designs that increase throughput in underwater pelletizing were displayed.

 

The new, optional belt filter for the temperature-controlled water system of Nordson BKG Master-Line underwater pelletizers reduces downtime and operator intervention by providing continuous, automated filtration of fines.

 

The new water filtration system has a finer filter mesh - 150µm versus the 200µm capability of the standard system available with Master-Line pelletizers.

Master-Line system with belt filter. 

The continuously rotating filter screen is constantly cleaned by spray nozzles at one end and a scraper at the other, allowing fines to be collected in a catch basin beneath the belt.

 

In the standard system, fines are collected on a large woven wire-mesh screen that periodically must be removed and cleaned, a process that requires stopping production.

 

The new belt-filter module provides users of Master-Line pelletizers with the finer-filtration and self-cleaning features available with our more elaborately equipped, higher-cost Combi-Line and Opti-Line pelletizers,” said Adam Cowart, Global Product Manager, Nordson BKG. “Until now, the only alternative for achieving 150-micron filtration with the Master-Line system was to install a secondary, stand-alone filter.”

 

The Master-Line pelletizer, widely used for compounding and recycling, is a compact, entry-level system with a throughput capability of up to 2,000kg/h.

 

As with other underwater pelletizers, a water tank provides a flow of water through the pellet-cutting chamber. After being cut, the pellets are separated from this transport water in the dryer, and the water is filtered for removal of fines before it returns to the tank.

 

New pulverizer line offers faster clean out and greater efficiency

 

Reduction Engineering Scheer (RE Scheer) has unveiled its next generation of compact pulverizers which deliver faster clean out, and more efficient production.

 

The four newly designed pulverizer models include the RE 500, RE 1000, RE 1500, and RE PASS. They are fitted with RE Scheer’s patented disposable disk system and is coupled with a new air flow management system.

The next generation compact pulverizers from RE Scheer. 

We think this makes our new line of pulverizers the most efficient on the market today,” said Rick D’Angelo, Chief Operating Officer for RE Scheer.

 

Other new features include a compact design that requires less floor space and no disassembly. A four-fork pocket design makes it easy to move the pulverizer with a fork lift when fully assembled.

 

An Orbital Classification System occupies less space than standard systems and features a larger screen. The area comes with no back wire and is fully accessible from the floor. It has a 35% faster clean down and has fewer parts to service.


A mill and drive system features a new head design which eliminates cross currents and has a lower profile shaft and drive design to allow for higher motor torque.
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