Barwell Global Ltd

Atria Court, 60 Paworth Business Park, Papworth Everard , CB23 3GY Cambridge
United Kingdom

Telephone +44 845 2243541
Fax +44 845 2243531
info@barwell.com

This company is main exhibitor of

Trade fair hall

  • Hall 11 / B48
 Interactive Plan

Hall map

K 2016 hall map (Hall 11): stand B48

Fairground map

K 2016 fairground map: Hall 11

Our range of products

Product categories

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  • 03.02.001.01  Extruders
  • 03.02.001.01.04  Ram extruders

Ram extruders

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.001  Extruders and extrusion lines
  • 03.02.001.02  Extrusion lines
  • 03.02.001.02.09  Extrusion lines for rubber
  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.02  Machinery and plant for processing
  • 03.02.004  Presses
  • 03.02.004.01  Compression moulding machines and transfer moulding machines
  • 03.02.004.01.02  Compression and transfer moulding presses for rubber

Compression and transfer moulding presses for rubber

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.03  Post processing machines and downstream equipment
  • 03.03.004  Cutting machines

Cutting machines

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.03  Post processing machines and downstream equipment
  • 03.03.010  Deflashing equipment

Deflashing equipment

Our products

Product category: Extrusion lines for rubber

ECO: Preformers & Extruders

The standard range of Barwell ECO high performance, low investment and cost-saving ram extruders and preformers are specifically designed for the accurate and efficient processing of rubber and synthetic polymer compounds across multiple industries.

A versatile and high quality processing system ensuring most types of compound can be processed to produce consistent and accurate product from silicone to FKM
An operator-friendly system that requires minimal user training increasing production capability
An energy-saving method of production significantly reducing power consumption
A cost-cutting solution which reduces factory space usage, material wastage and labour costs, providing a quick return on investment
Produces higher quality and more accurate preforms
Better tolerance to fast accelerators with no heat build-up during extrusion
Complete processing flexibility combining extrusion, cutting and check weighing all in one machine
A robust, safe and reliable system with easy maintenance

How does it work?
The ECO extrudes the prepared compound using a hydraulically powered ram. The rate of the extrusion is monitored by a digital flow valve and this permits the operator to select precisely the rate at which the rubber is extruded. An inverter controlled variable speed cutter (preformers only) is located on the head of the machine and the extrudate is cut at the die face so variations in die swell do not affect the volumetric accuracy of the preforms. Note: A preformer offers all the benefits of an extruder but is also supplied with a high specification cutting module unit. It is a proven technology adopted by hundreds of rubber companies around the world.

Standard ECO features

Available in batch sizes from 1 - 80 litres
Operating pressure of 210 bar (3000 psi)
Variable AC inverter controlled cutter
Speeds up to 400 cuts per minute
Weigh scale feedback loop for blank weight control
Accuracy of up to +/- 1% by volume
Touch screen operator interface

ECO or ECO Plus?
The ECO Plus is a premium model giving greater flexibility for bespoke requirements, as well as, enhanced usability due to simpler controls. Set-up is also quicker due to a 2000 product database and an auto cycle option. It also provides faster operation. Find out more.

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Product category: Extrusion lines for rubber

ECO Plus: Preformers & Extruders

The ECO Plus is a premium model which has all the features of the standard ECO but gives the processor greater flexibility for bespoke requirements and enhanced usability due to simpler controls. Set-up is also quicker as it has a 2000 product database and an auto cycle option. It also provides faster operation.

Featuring PLC control with a touch screen operator’s control panel, the ECO Plus adds a new dimension to automatic preforming.

Once an initial setup is stored in the database flash memory, the operator has easy recall to each product, and the ECO Plus automatically sets the correct operating parameters. The operator then simply samples the preforms on the connected weigh scale. If the weight is not in tolerance, the machine will automatically adjust the cutter speed to meet the correct requirement, minimising the chance for human error and the need for supervision.

ECO Plus features

Available in batch sizes from 1 - 80 litres
Standard operating pressure of 210 bar (3000 psi)
Variable AC inverter controlled cutter
Speeds up to 400 cuts per minute
Weigh scale feedback loop for blank weight control
Accuracy of up to +/- 1% by volume
8” TFT visible colour touch screen operator interface
2000 product database on removable “Flash memory”
Manual and automatic cycle
Password level protection
Prompt and error messages
Alarm history (for faults)
Extended centre for easy cleaning
Reversing conveyor
Pressure 240 bar (3500 psi) as standard on ECO Plus 40 and above

Optional extras

800 cuts per minute cutter option
Rear loading version
Die face conveyor
Two range gearbox for low and high torque cutting
Barcode reader

High Pressure H-series
Also available is a high pressure version (350 bar / 5000 psi) ideal for use with tough materials or when high quality filtering is required.

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Product category: Extrusion lines for rubber

BVP: Barwell Value Preformers

The Barwell BVP series is a basic low-cost range of ram preformers for the rubber industry. It is ideal for processors requiring the essential elements of the renowned Barwell quality and technology but on a tight budget.

BVP machines provide accurate and efficient processing of rubber and synthetic polymer compounds across multiple industries and is a cost effective solution for processors looking to improve their production speed and quality and also enjoy a quick return on investment.

An accurate and consistent method of blank, strip and pellet production
A multiple compound and industry processing system
An operator-friendly and easy-to-maintain method of production
A safe and reliable processing system
An cost-cutting system of production that reduces material wastage, factory space and labour costs

Standard Features

Available in two options ONLY – 20L/40L
Manual weight adjustment system
Variable AC inverter controlled cutter
Manual volume control valve
Two speed options 200/400 cuts per minute
210 bar / 3000 psi maximum operating pressure on both models
Accuracy of up to +/- 1% by volume
Front loading option only
5.2” TFT colour touch screen
Multi-language
Password protection

PLEASE NOTE THAT THE BVP IS MANUFACTURED FOR MARKETS WHICH DO NOT REQUIRE CE COMPLIANCE OR EQUIVALENT.

Optional extras
Weigh scale feedback loop system for greater blank weight control and automatic adjustment

Need further assistance?
For full details, download our full technical brochure on our range of BVP ram preformers. For further advice on improving your rubber processing requirements contact us on +44 (0) 845 224 3541 or email on sales@barwell.com outlining your needs.

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Need greater flexibility?
If you require greater flexibility or have more specific requirements, the superior quality Barwell ECO range will meet more exacting and stringent demands of your rubber processing needs.

The ECO range offers:

Larger choice: 1, 2, 5, 10, 20, 40, 60 & 80L options
Increased material processing flexibility
Higher operator pressure options
CE compliant
Superior European standard components
Advanced quality hydraulic system
Additional safety features
Improved operational features
More robust construction
Greater operator control
Additional cutter speed options
Weigh scale loop system as standard
Rear loading and front loading options
Extended centre option
Enhanced warranty
Enhanced service and technical support

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Product category: Extrusion lines for rubber

Gear Pump: Continuous Rubber Preformers

If you’re gearing up for increased business or have long production runs, a Gear Pump Preformer will provide you with continuous production capability for your preforming. It will also reduce your machine set-up time and negate the need to pre-heat rubber on a two-roll mill, when compared to using ram preformer which is the preferred solution for batch production preforming.

The Barwell Gear Pump Preformer is a fully automated and highly advanced screw extruder with integral gear pump specifically designed to provide high levels of control and processing flexibility for the continuous preforming or extrusion of almost any form of rubber compound. It combines three key elements, the plasticising properties of a cold feed screw extruder, the volumetric flow control properties of a gear pump and the proven Barwell cutter system.

Excellent for long production runs
Fully automated which reduces user dependence and increases productivity
Technologically advanced processing providing optimum levels of dimensional stability, product consistency, accuracy and superior quality
An intelligent process that ensures very high temperature control providing versatility at low temperatures
Complete processing flexibility combing extrusion, cutting and check-weighing
A cost-cutting solution reducing material wastage and labour costs as well as the need to pre-heat your rubber on a two-roll mill
A safe, reliable and user-friendly system

How does the Barwell Gear Pump work?
Material is delivered to the gear pump by a screw extruder which masticates the material prior to entry. The masticated material is pulled into the pump by intermeshing herrigibone gear teeth at a constant rate, irrespective of screw rotation speed, ensuring the gear pump cavity remains full. Minimal shear is generated in the gear pump so increases in material temperature are minimal - important when processing temperature sensitive materials.

The material is then compressed at the outlet point at a constant rate enabling precise control over dimensional stability. The constant rpm of the gear pump and monitoring and regulation of inlet pressure help overcome extruder pulsing. This assists during strip feed change-over. The gear pump is independently driven but controls the screw rpm by means of inlet pressure monitoring.

Without a gear pump the pressure build up and extrusion uniformity is directly influenced by the screw rotation and compound variations. With a gear pump these variations are monitored at the pump inlet and adjustments made automatically to maintain constant output flow.

Whilst the pressure at the inlet varies (due to material changes, feed variation etc.), the pressure at the outlet of the gear pump remains constant ensuring improved extrusion quality and control of extrudate dimensions.

By keeping the gear pump rpm constant, it is possible to influence the plasticising effect on materials by changing the screw rpm. Increasing the screw rpm increases the inlet pressure and also the compound temperature as greater mastication is achieved during the dwell time in the extruder barrel. This has significant advantages when processing difficult materials that need additional mastication to achieve output requirements.

Material flow through the gear pump is generally linear and dependent on pump rotation speed. Increasing rpm will automatically adjust the screw feed to maintain inlet pressure and cavity fill. This is not influenced by varying material characteristics.

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Product category: Extrusion lines for rubber

Barwell Rubber Strip Cutting Machine

The Barwell Rubber Strip Cutter is designed as a low investment, automated option for processors needing to produce small batches of rubber strips on a regular basis.

It has significant cost, time and quality advantages over manual methods of cutting, and is a less expensive and more suitable method for smaller production needs compared to using a ram preformer, which is better for larger production requirements.

This compact unit is ideal for companies of all sizes.

Quick and automated method of cutting rubber strips
Simple to operate PLC and touch display, includes programmable counter function
Incorporates scales-loop back system for accurate production and quick weight adjustment
Ideal for small production run requirements
High safety levels and CE compliant

The machine will cut strips up to a maximum width of 620mm and a maximum thickness of 20mm. Continuous strips are cut up to lengths of 100mm (50 Hz) or 80mm (60 Hz). For lengths above this, the system will default into pulse cut mode. The length is determined by the servo-drive controlling the feed roller speed.

The Strip Cutter is manufactured to meet the latest international safety standards, including CE marking and is fitted with safety interlocks and a monitoring relay.

Also incorporated is the proven Barwell scales loop feedback system for automatic weight adjustment, helping to reduce material wastage and produce accurate strips with minimal operator intervention. A programmable counter system allows users to easily control their production needs.

The machine is controlled by a user-friendly PLC and touch screen interface. It is safe, durable, compact and exceptionally easy to operate and maintain.

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About us

Company details

About Barwell

Barwell is the world leader in the design, manufacture, and supply of specialty equipment for the rubber industry. With well over 5000 machines in operation globally, Barwell is the rubber industry’s leading source for reliable, quality machinery designed to maximise efficiency and improve productivity and profitability.

Barwell is the undisputed market leader in the manufacture of preforming equipment for the rubber and synthetic polymer industry. For many years, the name Barwell has been synonymous with the development of ram extrusion and preforming, and we remain the acknowledged leader in this field.

We were the first to develop and use hydraulic ram extrusion technology, and Barwell continues its legacy of innovation with the introduction of new ranges and technologies.

Our range includes:

Rubber Ram Preformers and Extruders
Continuous Gear Pump Screw Extrusion and Preforming
Rubber Strip Cutters
Cryogenic Deflashing Equipment
Spinning Rubber Deflashing Equipment
Spiral Take-off Cooling Systems
Hydraulic Compression Presses
Industrial Drying Ovens
Tyre Re-treading Systems
Ancillaries, other Processing Equipment and Custom Design

Whatever your needs and methods of production (compression, transfer or injection) and whatever your compounds (silicone, NBR, CR, SBR, from EPDM to FKM), we have the very latest in design technology to improve productivity, reduce waste and enhance profitability.

Based in Cambridge in the UK, Barwell offer worldwide sales, spares and support and has expert export experience.

We are a global company with design, manufacturing and service capabilities in every region of the world. We have an established network of regional agents covering more than 40 countries, ensuring that we are well placed to respond to all our customer needs, whether for new equipment or for after sales technical support.

Our customers expect the best and, here at Barwell, we remain committed to our mission of providing the highest quality equipment and services at the most competitive prices.

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