New Teardrop Tube Magnet from Bunting

Teardrop Shaped Magnet Eliminates Product Bridging

Bunting has developed a new design of Rare Earth Tube Magnet for use in removing fine iron from dry powders.  The Teardrop Tube Magnet retains the high surface magnetic field of 12,000 gauss, but the shape prevents fine powder from building up on the surface.Bunting Teardrop Tube Magnet

Tube Magnets are used extensively in the processing industry to capture magnetic susceptible foreign bodies, including screws, nuts, bolts, and small iron shards, in both dry and wet applications.  Metal Contamination causes damage to delicate processing equipment, as well as affecting the end-quality and purity of the product.  Tube Magnets are commonly used in the form of a Grate Magnet, where several Tubes form a Magnetic Separation grid.

Rare Earth Magnets are constructed out of Neodymium Iron Boron magnet slugs.  These produce the highest permanent magnetic field and are used to separate very fine iron and weakly magnetic stainless steel from solids and liquids.

Even though the Rare Earth Tube Magnet is a tube with a spherical circumference, fine non-magnetic material often builds up on the upper-most point of the Tube.  Over time this ‘bridging’ can increase and ultimately cause a blockage.  The build-up always reduces the separation performance, increasing the likelihood of metal contamination continuing through the process.

The new Teardrop Magnet has the point of the tear orientated into the product flow.  The surface area on the point of the tear is very small and prevents fine powder collecting on the surface.  The powder then flows under gravity over the side of the Tube Magnet, with any magnetically susceptible materials attracted to the high magnetic force.  These magnetics migrate to the bottom of the Tube Magnet, where they are securely held away from the product flow.

Bunting Teardrop Tube Magnet

The new Teardrop Tube Magnet is available as a single Tube or as part of a multi-Tube Grate Magnet assembly.

For further information on the Teardrop Tube Magnet or Magnetic Separation equipment in general, please contact us on:

Phone: +44 (0) 1442 875081
Via the website

Bunting Europe Joins British Plastics Federation

BPF Important for Bunting’s Continued Growth

Bunting Magnetics Europe Ltd has joined the British Plastics Federation (BPF).

“Supplying Magnetic Separators and Metal Detectors into the Plastics sector is one of the cornerstones of our business and we felt that it was important to join the UK industry’s leading representative body,” explained Dave Hills, our Head of Sales.

Established in 1933, the British Plastics Federation is the most powerful voice in the UK plastic industry with over 500 members across the plastics industry supply chain, including polymer producers and suppliers, additive manufacturers, recyclers, services providers, end users, plastics processors and machinery manufacturers, representing over 80% of the industry by turnover.

“The Bunting Global group of companies has a strong history of developing metal separation solutions for the plastics sector,” said Dave Hills.  “In the past 12 months, Bunting Europe has had stands at the international K2016 plastics show in Germany, Plast Eurasia in Turkey, ProPak in South Africa, and at Arabplast in Dubai.”bunting_at_k2016-2

“This year we are already booked a stand at Interplas (NEC, Birmingham, UK 26-28 September 2017) and will be supporting our local representatives at other regional plastics shows in France and the Netherlands.”

The BPF has strong overseas links and provide support to companies seeking to develop export business.

Bunting has reported on several Magnetic Separator and Metal Detector installations in the plastics industry including:

Perfect Plastics Plant

Bunting also produced a guide on the best locations for Magnetic Separators and Metal Detectors in a Plastics Production Process.

“We are looking forward to being part of a fantastic organisation that can help us expand our business in the plastics sector,” said Dave Hills.

For further information on Magnetic Separators and Metal Detectors used in the Plastics sector, please contact us on:

Phone: +44 (0) 1442 875081
Via the website

We Guarantee 100% Metal Separation

7th of 10 Magnetic Separator Myths

In the perfect world, installing a Magnetic Separator will enable 100% metal separation with 0% product loss.  However, is this even remotely possible?100-with-a-smile

Often as part of a project specification, there will be a question asking about the level and percentage of metal separation.  In some projects, the expected metal separation target is even stated.

The response from Magnetic Separator suppliers will include a statement regarding the level and percentage of Metal Separation, often without any qualification.  So what should the answer be?

There are a number of questions that need asking before the level of Metal Separation can be estimated and these include:

  1. What is the Metal Separation objective? Is it to remove problematic metal and protect processing equipment as when processing food, pharmaceuticals, or plastics?  Or is to recover as much metal as possible, which may be the objective in a recycling operation?
  2. How much product or non-metallic material can be lost? The non-metallic material might be the product or it could be the waste.  It is commonly found that higher Metal Separation rates are often accompanied by a higher loss of the non-metallic materials;
  3. What purity of end product is required? In recycling, the aim is to achieve recovery of metal, but at what point does the value of the recovered metal become affected by the level of contamination?  In the food and plastics industry, the final product quality is paramount;f33a6163
  4. How is the stated Metal Separation figure in terms of separation and/or purity monitored once the equipment is installed? Commonly, very high separation percentages are quoted by suppliers as it is well recognised that once the equipment has been installed the actual separation rate will never be checked;

Just asking these four questions enables a really good initial assessment of the application.  Then it is possible to make a recommendation in terms of the design of Magnetic Separator, and the mode of installation and operation.

Importantly, if a Metal Separation target is a key part of the contract, ensure that there is an agreed process to check the level of separation once the Magnetic Separator is installed.

With regards to the original statement, ‘We Guarantee 100% Metal Separation’, this is a claim made by only the brave or ill-advised.  Processing materials such as food, recyclables, minerals, aggregates, chemicals and plastics can be carefully controlled, but is always subject to variations that can affect any part of the process including the level of metal separation.  Even by installing multiple magnetic separators of different designs, achieving a 100% Metal Separation is simply a myth.

For further information on Metal Separation or to assess the right Magnetic Separator for an application, please contact us on:

Phone: +44 (0) 1442 875081
Via the website

Other Magnetic Myths reviewed in this series include:

  1. Should You Always Use the Strongest Magnet?
  2. All Rare Earth Magnets are not the Same;
  3. The Highest Gauss Magnet is not always the Best;
  4. Stainless Steel Isn’t Magnetic, or is it?;
  5. Do Magnets Lose Strength Over Time?
  6. Is a Magnetic Field Uniform Across the Surface of a Tube Magnet?

Bunting Acquires Master Magnets

UK Magnetic Separator Manufacturer Joins Global Bunting Operation

In a momentous agreement, Bunting® Magnetics Co. announces the signing of an agreement to acquire Master Magnets Ltd.  Master Magnets is a UK-based manufacturer of magnetic separation equipment.  Based in Redditch, United Kingdom, Master Magnets Ltd manufactures an extensive range of permanent and electro magnetic separation equipment, and metal detection equipment.  They specialise in solving metal and mineral separation problems in industries such as recycling, mineral process, mining, quarrying and bulk handling.  Master Magnets have a global network of distributors who will now join the Bunting team.

The acquisition will build on and complement Bunting Magnetics Co.’s global foundation already in place through broadened customer reach, new manufacturing capabilities and the opportunity to sell into new markets.

“We’re thrilled to add Master Magnets Ltd to our family of companies,” commented Bob Bunting, President & CEO, Bunting Magnetics Co. “We value the longstanding success of Master Magnets Ltd and are committed to sharing engineering and manufacturing strengths while providing their employees the resources they need to build on this success.”

“Plus, Master Magnets Ltd perfectly complements Bunting Magnetics in terms of innovation, quality, products and providing magnetic solutions through individual components and complete systems. Joining forces decisively extends Bunting’s status as a leading global supplier of magnetic equipment and is a significant milestone in the company’s history,” he added.

Simon Ayling, Managing Director of Bunting Magnetics Europe, who will assume operations management responsibility of this new division, said, “Master Magnets Ltd has deep customer relationships in new markets for us such as mining, quarrying and aggregate. We are especially excited to now be able offer a large range of ATEX approved electromagnets and mineral separation equipment, as well as the company being a recognised, trusted brand in magnetic separation which has remarkable products created by remarkable people. It’s exciting to combine our strengths and expertise. Together, we have nearly 100 years of experience in magnetic separation.”

Master Magnets Ltd was founded in 1978 and currently has 26 employees. The company designs, manufacturers and services a complete line of industrial magnetic separation equipment including Eddy Current Separators, Permanent and Electro Magnets, including Overband Magnets, Drum Magnets and Suspension Magnets. The company also supplies a full range of Mineral Separation Equipment for customers all around the world. The company will continue to operate out of its Redditch, UK headquarters.

Large Suspended Electro Magnets designed and manufactured by Master Magnets

Adrian Coleman, General Manager, Master Magnets Ltd, said, “This acquisition is excellent news for the Master Magnets team, who are joining a company with international standing and a shared vision for growth. We will continue to focus on ensuring our UK operations perform seamlessly for our customers who will also benefit from this new partnership. We’re excited for this new future that awaits Master Magnets as part of the Bunting family.”

The announcement comes after Bunting Europe recently announced a record sales month in September 2016.

For more information on the acquisition, please contact the Bunting Press Officer, Paul Fears, on:


Tel: +44 7909 103789


Bunting Metal Separators on Show at Arabplast 2017

Developing Export Business in the Middle East Plastics Sector

Bunting Magnetics Europe will be exhibiting at Arabplast 2017 in Dubai, UAE (8-10 January 2017) on stand 4D 145.  This is part of our continued export business development plan and is the first time we have exhibited in the Middle East.

Bunting FF Drawer Grate Magnet

Arabplast 2017 is the premier show in the Middle East for the Plastics, Petrochemicals and Rubber industries.  The show is held every 2 years at the Dubai World Trade Centre.

Dave Hills, Bunting’s Head of Sales, explained the reasons for exhibiting at Arabplast in 2017.

“In 2016, we have had great success in developing new overseas distribution channels and this has increased orders.  We identified the plastics sector in the Middle East as offering great opportunities.  The sector is rapidly developing and we believe that our products [metal separation equipment] are ideally suited to helping companies improve their production processes and product quality.  Arabplast offers us the ideal opportunity to introduce ourselves into the market.”

From the European manufacturing headquarters in the UK, Bunting supply a wide range of Magnetic Separators and Metal Detectors.  The Magnetic Separators are inserted into plastic processing lines to capture and remove magnetically susceptible metals like steel and work-hardened stainless steel.  Metal Detectors are used to identify and reject both ferrous and non-ferrous metal.  The two technologies are used in conjunction with each other at various stages within a plastics process.

We also supply Metal Separation equipment for plastics recycling.  In a typical plastics recycling process, the metal separation requirements are often more challenging.  The Eddy Current Separator is used to separate non-ferrous metals from shredded reclaimed plastic and is commonly incorporated into a Metal Separation Module with a high strength Drum Magnet as at Recapture Plastic in the UK.

Bunting Metal Separation System Recapture Plastics

Dave Hills is excited at the opportunity of developing business in new overseas markets.

“At the K Show in Germany [Oct 2016], we met and appointed a number of new distributors to expand our export sales network.  By exhibiting at Arabplast we are demonstrating our commitment to the market.  It also gives us the opportunity to understand the needs and expectations of the customers in the Middle East.  To successfully export, you need to visit your target markets.”

For further information on our attendance at Arabplast in 2017 or on Magnetic Separation and Metal Detection, please contact our Technical Sales Team on:

Phone: +44 (0) 1442 875081


Via the website

Perfect Plastics Plant

Is a Magnetic Field Uniform along the Surface of a Tube Magnet?

6th of 10 Magnetic Separator Myths

On a typical Cartridge or Tube Magnet, the magnetic field on the surface is not even along the whole length.  As shown on the photograph, magnetically attracted materials agglomerate at specific points along the length.  So why is that?


A Cartridge or Tube Magnetic Separator is constructed by placing an alternating series of magnet slugs and steel discs inside a stainless steel tube.  Each magnet slug has a North and South pole and is inserted into the tube so that the South Pole faces another South pole and visa-versa.  When the magnet slugs are very strong, as in the case of the Bunting Cartridge Magnetic Separators which use high strength Neodymium Iron Boron or Rare Earth Magnets, the assembly requires a great deal of skill and knowledge.  In between each magnet slug is a steel disc which acts as a magnetic pole, intensifying the magnetic field.  As shown on the photograph below, the magnetic field is drawn into each steel pole positioned between each magnet slug, with magnetic field lines arcing from the North to the South Pole.


Any magnetically susceptible particle moving into the lines of magnetic field will be attracted to the point of highest intensity, which is at the nearest pole.  Hence why magnetically captured particles are then seen to agglomerate at specific points along the surface of a Cartridge or Tube Magnetic Separators.  They have been held at the point of the highest magnetic field, which is between the magnet slugs and actually on the steel pole piece.

Hence why a magnetic field is not uniform along the surface of a Magnetic Separator like the Tube Magnet.

Other Magnetic Myths reviewed in this series of blogs include:

When assessing the right Magnetic Separator for an application, please speak with one of our trained sales engineers who can assess your requirements and recommend the Magnetic Separator that is right for you.

For more information please contact us on:

Phone: +44 (0) 1442 875081
Via the website

Other Magnetic Myths reviewed in this series include:


Bunting Featuring at Plast Eurasia 2016

Supporting New Distributor for the Turkish Plastics Sector

Bunting Magnetic Separators and Metal Detectors, designed to ‘Get The Metal Out’ of Plastic, will be on display on the Tepro Makine stand (Hall 2-3-4 – Stand : 209-213-304B-401E) at Plast Eurasia 2016 (7-10 December 2016, Tüyap Fair Convention and Congress Center in Istanbul, Turkey).

“The Turkish Plastics sector is vibrant and Plast Eurasia gives us the opportunity to introduce Bunting to a new export market,” explained our Head of Sales, Dave Hills.

Dave met the new Turkish distributor, Tepro Makine at the recent K2016 Plastics Show in Germany.

“I met Sadrettin Nikbay [Tepro Makine’s Sales Director] on our stand at K2016 and was impressed with his knowledge of the Plastics sector and his understanding of the need for good Metal Separation,” said Dave.  “They subsequently purchased stock for the Plast Eurasia show (FF Drawer Grate Magnets) which we will be demonstrating.  Since the K2016 show, we have been discussing a number of Magnetic Separator and Metal Detector projects in Turkey.  The level of interest has been fantastic.”

FF Drawer Grate Magnet

Tepro Makine had been looking for a high quality Magnetic Separator and Metal Detector supplier to work with in Turkey.  Quality and proficiency were both important and Bunting’s knowledge and experience of solving Metal Contamination problems in the plastics sector was important.

Bunting Magnetic Separators such as the FF Drawer Grate Magnet are classed as ‘industry standards’ for the Plastics industry.  The Magnetic Separator range is complemented with Metal Detectors, with the 2 technologies often working together to provide the best metal separation solution.  For Plastics recycling, Bunting has supplied Eddy Current Separators to remove non-ferrous metals and the High Intensity Separation Conveyor (HISC) for removing stainless steel.

The appointment of Tepro Makine and the attendance at Plast Eurasia 2016 is part of Bunting’s ongoing strategy for overseas business growth.

“It is fantastic to have Tepro Makine on board as one of our distributors and we are looking forward to developing business in the plastics industry in Turkey,” said Dave.

For more information about Metal Separation in the Plastics sector or regarding becoming one of Bunting’s overseas distributors, please contact us on:

Phone: +44 (0) 1442 875081
Via the website

Bunting Magnetics Europe at RWM16
HISC (Stainless Steel Separator) in action at RWM2016 exhibition



Bunting Magnetic Separators at Pollutec

Developing Recycling Business in France with Distributor Pronix at Pollutec 2016

Bunting Europe’s distributor in France, Pronix, will be displaying a wide range of recycling equipment at the Pollutec 2016 expo in Lyon (29th November – 2nd December 2016) in Hall 3 Aisle D Stand 175.

The bi-annual Pollutec focuses on the reduction of the impact of human activities on the environment.  This encompasses a wide range of technologies for industry, local authorities and in the service sector.  The global range of exhibitors is extensive.

Dave Hills, Bunting’s Head of Sales, will be supporting Pronix on their Pollutec stand.

“Developing our [Bunting Europe] overseas business has been a primary focus in 2016.  Supporting Pronix in France, by providing Magnetic Separators to display on their stand and being present to assist with handling enquiries, is really important.  Success in developing business in export markets is based on providing good support to our local representatives.”

Providing metal separation solutions for the recycling industry is an important and expanding sector of the business for Bunting.

“Sales of Overband Magnets, Metal Detectors and Eddy Current Separators for recycling applications continues to grow,” explained Dave Hills.  “Introducing new technology such as the Stainless Steel (HISC) Separator has also increased awareness of what we have to offer.”

In 2016, Bunting has been prominent at major recycling and plastics exhibitions in Europe including Waste 16, RWM 2016 and K2016.  Earlier in November 2016, Dave Hills and client Roger Evans from Recapture Plastics spoke at a major recycling conference in The Netherlands about the challenges of setting up a plastics recycling operation.

Bunting Metal Separation System Recapture Plastics-4

“Attending Pollutec enables us to gain an understanding of the recycling and waste sectors in France,” said Dave.  “Speaking to visitors will help us appreciate the different challenges faced in France.  By working closely with our local distributor, Pronix, we can ensure that our Metal Separation solutions meet the needs of recycling companies in France.  I am really excited about the show.”

For more information about Metal Separation and Recovery in the Recycling sector, please contact us on:

Phone: +44 (0) 1442 875081
Via the website




Do Magnets Lose Strength Over Time

5th of 10 Magnetic Separator Myths

It is a question we frequently get asked:  When will the Magnetic Separator start losing its magnetic strength?  In normal operating conditions, a magnetic separator will not lose any magnetic strength.  However, there are occasions when other factors do affect the magnetic strength.  Such instances include:

  1. The use of bonded Rare Earth Magnets. These are lower in cost to manufacture and therefore cheaper to purchase.  They are supplied by many companies, stating that the magnets are ‘Rare Earth’.  However, as the magnet is only bonded (i.e. bonded together using a resin) it is not as strong or stable as being sintered.  ‘Ceramic’ Rare Earth Magnets, that have been produced using heat, are more stable and are what Bunting and other reputable magnetic separator suppliers use in their magnetic separators.  Bonded Magnets are ideal for many other applications;
  2. Physical damage. If a Magnetic Separator is dropped or hit, then this can result in the magnets inside breaking and this will affect the magnetic power.  Such damage often occurs when a Magnetic Separator is being cleaned.  Unknowingly, the Magnetic Separator is returned to the process line with the operator totally unaware that the magnetic separation capabilities have been seriously compromised.  Regular checks on the magnetic strength of the Magnetic Separators is recommended as part of an annual review and audit;
  3. Exposure to heat. When Rare Earth Magnets are exposed to heat over 80°C, there is a reduction in the magnetic strength.  When the temperature reduces, the magnetic field can recover.  However, if the temperature is very high then the magnetic strength will never recover back to the original state.  Typically Magnetic Separators are exposed to high temperatures if a process line is being cleaned using steam.  There are special Rare Earth Magnetic materials that are specially produced for high temperature applications, with Samarium-Cobalt being used in extreme circumstances;

Understanding the ability of a Magnetic Separator to hold its magnetic strength will help during the purchasing and maintenance processes.  Our Sales Team can provide help and assistance on:

Phone: +44 (0) 1442 875081
Via the website


Other Magnetic Myths reviewed in this series include:



Bunting Appoint New Distributor in Denmark

New Distributor for Plastics Found at K2016

Developing a network of overseas distributors is vital to grow our Export business.  K2016 (the largest European Plastics show held in Germany in October 2016) gave us the opportunity to meet new potential distributors and representatives who have a knowledge and working expereince of the plastics sector.

At K2016, we were thrilled to meet and appoint the Normann & Kock Sales Director, Brian Toft as our new distributor in Denmark.

Normann & Kock ApS was founded in 2002 by Søren Kock, who since 1994 has been dealing with the sale of Demag injection molding machins and peripheral equipment for the plastics industry.

Normann & Kock is a dynamic agency business, which sells high-quality products. Besides having a strong product range, they put special emphasis on providing a 24 hours level of service.  With their industry knowledge, the company is able to increasingly deliver customized solutions with design and installation of complete production units.

The range of products and services offered by Normann & Koch perfectly compliments the range of Magnetic Separators and Metal Detectors offered by Bunting for the Plastics Sector.

Bunting Grate Magnet
Grate Magnets or Magnetic Separators to capture ferrous metal contamination from free flowing materials

Dave Hills, our Head of Sales explained the importance of the new appointment.

“Having a well-respected and knowledgeable local distributor is the key to successfully develop business in a specific industrial and geographic sector.  K2016 was the perfect platform to meet plastic industry specialists.

Brian Toft from Normann and Kock explained their company ethos and it fitted perfectly with ours.  I am sure this will provide us with the ideal structure to develop business in Denmark.”

For more information on Magnetic Separators and Metal Detectors used in the Plastics Industry or to discuss joining the Bunting distributor network, please contact us on:

Phone: +44 (0) 1442 875081
Via the website