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Underwater pelletizing accessories2019-06-28T08:59:32+02:00

Accessories for underwater pelletizing

The issue of water, water filtration, and water treatment plays an important role in the underwater pelletizing of plastic pellets. To meet the demands, MAAG offers appropriate additional equipment and accessories for underwater pelletizing systems. PURO® is a highly efficient and compact process water system, suitable as an accessory for almost all applications. The various temperature-controlled water systems convey and cool the pellets in a closed circuit from the cutting chamber to the dryer.

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Water filtration
Control systems
Additional equipment

Product overview underwater pelletizing accessories

Abrasive Wear Design and Coating

  • Constructed of heavy-gauge materials
  • Abrasive resistant coatings in high wear areas
  • Modular components in high wear areas for easy replacement

Application:
Category: Underwater pelletizing accessories

Agglomerate Catcher

  • Designed to catch and discard oversized pellet clusters (agglomerates) before they enter the rotor area of the dryer coming from the underwater pelletizer and the underwater cutting area.
  • Constructed of 304 S/S and is bolted to the dryer inlet, [...]

Application:
Category: Underwater pelletizing accessories

Band Filtration (BF)

The Gala Band Filtration System (BF) for process water filtration is designed for the underwater pellet production line (for example, during direct crystallization) in which there are several color changes throughout the day. The BF can also be used in [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Wood flour
Category: Underwater pelletizing accessories

BF Process Water System

The process water system BF fulfils the following functions within a underwater pelletizing systeme: * Collecting of the process water and feeding it at the required pressure to the individual locations of consumption * Cooling of the process water * Separating dust and [...]

Application: Compounding • Masterbatch • Polymer production • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Bidirectional Polymer Diverter Valve (BiPoDV)

With the bidirectional polymer diverter valve (Model BiPoDV), the melt is diverted sequentially into different directions during the production process. This means that, depending on the requirements of the job, the machine operator can work with two pelletizing heads that [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Continuous Band Filtration (CBF)

The Gala Continuous Band Filtration (CBF) performs process water filtration. It is designed as a retrofit for the pellet production line where fines are regularly created on some products and operator attendance would normally be required to clean the IS [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Custom Control System

Gala can provide customer-specific control systems based on the customer's needs. Gala uses standardized PLC based control systems for its underwater pelletizing systems; however, in most cases we are able to implement customer-specified controllers and other components upon request. Gala [...]

Application:
Category: Underwater pelletizing accessories

Cutter Blades

D2 is the material of construction known as the benchmark of the industry. Much like steel belted radial tires you get on a new car, this material will usually get the job done at a low price. The primary element [...]

Application:
Category: Underwater pelletizing accessories

Cutter Hub

Gala’s patented self-aligning cutter hub provides precise positioning between die plate and pelletizer shaft, ensuring alignment of all cutter blades against the die face. This results in uniform pellet quality and reduced blade and die face wear during underwater cutting.

Application:
Category: Underwater pelletizing accessories

Cutting Chamber

The underwater cutting chamber is the housing in which the pellets are actually cut in the polymer pelletizing process. The pelletizer is coupled to the cutting chamber, which places the cutter blades inside the cutting chamber (often referred to as [...]

Application:
Category: Underwater pelletizing accessories

Die Plate

Gala has been manufacturing precision die plates for its underwater pelletizers since the late 1970s. The die plate is the heart of the Gala underwater pelletizing system. All Gala die plates are custom designed to fit each customer’s specific polymer [...]

Application:
Category: Underwater pelletizing accessories

Die Plate Grinding Tool

Gala’s die grinding tool gives you the option of grinding the die plate of an underwater pelletizer without removing it by simply threading the tool onto the cutter hub holder in place of the cutter hub. This unique tool is [...]

Application:
Category: Underwater pelletizing accessories

Dual Canister Filter System

In underwater pelletizing systems, the dual canister filter provides extra process water filtration in high production situations in which shutdowns are kept to a minimum or when processing highly filled products that create fine particulates not caught by a standard [...]

Application: Polymer production • Recycling
Category: Underwater pelletizing accessories

DV

MAAG polymer diverter valves (DV) are based on the proven single-piston design that operates without any additional seals. The polymer diverter valves type DV are used in plastics manufacture, pelletizing, and compounding applications where they function as deflection, safety, and [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Dynamic Fines Removal System (DFRS)

The Gala DFRS removes particles down to 0.14 mm from process water. Clean process water after filtration in a polymer production process avoids the contamination of the product and the settling of fines in key underwater pelletizing system components. The [...]

Application: Compounding • Masterbatch • Polymer production • Recycling
Category: Underwater pelletizing accessories

E-type Control

The E-type control system was developed for a defined machine configuration and is an affordable and compact control system for larger underwater pelletizing systems. It also includes upgrade options.

Application:
Category: Underwater pelletizing accessories

Fines Removal Sieve (FRS)

The Gala FRS removes fine particles greater than 0.15 mm in size from process water used in conjunction with underwater pelletizing systems. Clean process water in a polymer production process prevents product contamination and the settling of fines in key [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Flow Guide

Gala provides a number of special tools for the operator of a Gala underwater pelletizer and for underwater cutting. These tools are designed to allow the successful performance of specific tasks. The flow guide provides optimization of the process water flow:

Application:
Category: Underwater pelletizing accessories

H-type Control

The H-type control system can be customized to meet specific requirements and permits virtually unlimited options for underwater pelletizing systems. It offers the highest level of operating and control comfort with separate control panel and integrated user interface for pelletizing [...]

Application:
Category: Underwater pelletizing accessories

Integrated Sieve (IS®) Tempered Water Systems

Gala’s IS (Integrated Sieve) Tempered Water System features a V-wire screen mounted directly under the dryer water outlet to filter solids from the process water prior to recirculation to the pelletizer. The screen is easy to remove for cleaning, reducing [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

LPU®-Controls

The control system for the Gala LPU® for underwater pelletizing systems is designed to meet the requirements of a laboratory system with low throughput in polymer production. Compact design, clear separation of possible options, and the use of standardized software, [...]

Application:
Category: Underwater pelletizing accessories

MB500® Control

The control system for the Gala MB500® is designed for pelletizing rates of up to 500 kg/h (1102 lbs/hr) in underwater pelletizing systems. Compact design, clear separation of possible options, and the use of standardized software, standard components, and documentation [...]

Application:
Category: Underwater pelletizing accessories

MB500® Tempered Water Systems

The MB500® Tempered Water System is a result of a cooperative effort between Gala and its customers to develop a underwater pelletizing machine which directly addresses the need for the custom compounder to thoroughly clean the system between products. Small [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Multidirectional Polymer Diverter Valve (MdPoDV)

With the multidirectional polymer diverter valve (Gala Model MdPoDV), the melt is diverted sequentially into different directions during production. The MdPoDV is designed to allow a continuous operation of the production machine and to increase output without interruptions from a [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Non-Stick Coating

Nearly all metal components within the cetrifugal dryer and the spin dryer used with pelletizing systems can be coated with a durable non-stick coating. This is normally confined to product contacting areas to reduce costs but can be expanded to [...]

Application:
Category: Underwater pelletizing accessories

Pellet Diverter Valve (PeDV)

* Bolts to dryer resin outlet of a centrifugal pellet dryer or spin dryer * Constructed of 304 S/S * Designed to divert product during start-up, for sampling or filling containers * Manually or pneumatically operated

Application:
Category: Underwater pelletizing accessories

PoDV (Polymer Diverter Valve)

The polymer diverter valve is used to direct the polymer melt from the pump or extruder to the floor, to the side, or directly into the die plate. It can be used in underwater pellletizing systems at the start of [...]

Application:
Category: Underwater pelletizing accessories

PURO®

PURO® is an efficient water system technology for any polymer application that transports granulat to the centrifugal pellet dryer. The energy-efficient compact systems require minimal space and are suitable for use with PEARLO® underwater pelletizing systems and with M-USG and [...]

Application: Polymer production • Thermoplastic elastomers
Category: Underwater pelletizing accessories

PWA Process Water Treatment

The process water treatment unit PWA serves to filter, temper, and circulate process water for dry-cut systems in centrifugal pellet dryers of underwater pelletizing systems during compound and masterbatch production. PWA can be integrated into the base frame of the [...]

Application: Compounding • Masterbatch • Recycling • Wood flour
Category: Underwater pelletizing accessories

Quick Opening Clamp (QOC)

Fitted with a screen pack, the quick opening clamp is situated between an extruder or melt pump and the pelletizer die plate. The QOC is used to filter particles from the melt before entering the die. In applications where screen [...]

Application: Polymer production • Recycling
Category: Underwater pelletizing accessories

Rotors

Sectional Rotor * Modular design * Ease of replacing individual rotor components * Upgradeable One-Piece Rotor * One-piece solid shaft * Easier shaft replacement without alignment problems * Ability to improve throughput and moisture levels HMA Rotor * Designed specifically for hot melt adhesive (HMA) or tacky product applications * [...]

Application:
Category: Underwater pelletizing accessories

Screens

Wedgewire * Have up to 25% more utilized screen area * Have very precise openings * Are stronger and more durable Expando * Primarily used for micropellets * Available in either slotted or punched styles * Various fastening mechanisms ML * Multi-layer screen (patent pending) * Greater open area for [...]

Application:
Category: Underwater pelletizing accessories

Tempered Water Systems (TWS)

Gala tempered water systems are an integral part of a underwater pelletizing system. The TWS conveys and cools pellets from the pelletizer cutting chamber to the resin outlet of the centrifugal pellet dryer. The TWS is a closed loop system. The [...]

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Touch Screen Control Systems

These control systems are designed to provide total control of Gala's polymer production systems with underwater pelletizing systems. Components used are of high quality to ensure superior control and operating safety and can be customized to meet specific customer requirements.

Application:
Category: Underwater pelletizing accessories

User Interface

In additional to the standard user interface of the E and H-type controls, Gala offers several options for the visual representation of processes, such as formulation/run program, alarm screen, configuration screen, history/trends, and password protection. The communication between the PLC [...]

Application:
Category: Underwater pelletizing accessories

Water Box By-Pass

Developed by Gala to simplify the start-up phase of the underwater pelletizing process for polymer production using underwater cutting.

Application: Compounding • Masterbatch • Polymer production • Recycling • Thermoplastic elastomers
Category: Underwater pelletizing accessories

Water filtration

The BF process water system is equipped with a band pass filter, and is mainly suitable for use where ultra-fine particles are produced or where product changes frequently occur. It collects and transports process water at sufficient pressure, cools the water, and continuously separates cutting dust or impurities from the water. This keeps the process water “pure,” and means that in most cases it is not necessary to change the water.

The CBF continuous band pass filter is designed as a retrofit kit for underwater pelletizing systems where ultra-fine particles are often produced and have to be removed. Screens and arched screens remove ultra-fine particles from the process water and prevent product contamination.

maag-pelletizer-underwater-system-puro

Control systems

Precise, state-of-the-art electronic control of machinery in polymer processing plants is becoming more and more important. As an integral component, the control system ensures the interaction of all system components and the monitoring and control of the relevant process parameters such as the start-up valve, the temperature of the die plate, the speed and contact pressure of the knife head, the dryer, as well as the delivery rate of the water pump. The control system varies according to the additional equipment. The touchscreen controls and the visualization system can be customized to individual requirements.

Additional equipment

Start-up is a key phase in the underwater pelletizing process. Simple starting switches, bidirectional starting switches, and multidirectional starting switches are among the additional equipment items in this area. Accessories for Gala and Automatik underwater pelletizers include die plates and die plate grinding tools, knives and knife heads, cutting chambers and cutting chamber bypass piping, agglomerate separators, screens, rotors, pellet distributing flaps, and non-stick coatings.

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