2206 structural adhesive two cartridges nozzles and gun

Stress testing our 2206 structural adhesive with incredible results!

Following a recent enquiry from a customer, we were asked if we could back up our claims that our 2206 structural adhesive was a versatile, strong and reliable bonding solution.  We did and we filmed it so you can see the results too!



What did you do?

To set up this demonstration we used a tensometer (also known as a Universal Testing Machine or UTM).  This is a device which is designed to test the tensile properties of a material and its tensile strength – the degree to which a product will stretch under stress – often to the point of breaking, or failure. The amount of stretch that a material has when it is under strain provides important information about the material’s tensile strength and fatigue strength. This is crucial to anyone who needs safe and successful bonding solutions. It is a fundamental engineering test.

What happened?

We correctly cleaned and prepared two steel strips, then applied an even bead of 2206 10:1 adhesive to the steel.  This was left for a fixture time of 15 minutes after which the bonded parts were left to dwell for 24 hours to achieve full strength prior to the tensile test.  They were then vertically loaded into our tensometer.  The machine gripped both ends of the joined parts, leaving the bonded section clear in the centre, and the tension test was started.  In just less than one minute, the machine had reached a point of 7.5 Newtons – and then the substrate failed!  Our 2206 adhesive remained firm, solid and reliable, but the steel strip broke!

What does this mean?

The Newton is the International System of Units derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics and is the unit of measurement used by the tensometer.  In this test, at the point of 7.5 Newtons per mm2, the substrate failed, but our 2206 bond held true. This certainly shows how strong our adhesive is!  However, it was only at half of its maximum potential, as CTA’s 2206 limit is an awesome 16 Newtons per mm2.

Why would I use 2206?

The 2206 adhesive is excellent for bonding metal, most plastics, granite, marble and in the powder coating process, to name but a few.  It resists impact loads at both high and sub-zero temperatures and comes in both natural and black variants.

Do I have to buy lots?

Another feature of the 2206 adhesive, like many of our products, is that you can buy it in either the trial kit of 50ml, which comes with 2 cartridges, 4 nozzles and a manual applicator gun, or the larger 490ml and caulking applicator. This means that you can test our structural adhesives without committing to large quantities and you’ll have all the application tools you’ll need.

In summary

The strength test for our 2206 10:1 structural adhesive was recorded, and the short video gives a great visual display of its strength.  CTA pride themselves on being able to provide technical support and products capable of solving your bonding issues.

Call us on 0121 378 2909 to find out more or purchase below.


Buy 2206 structural adhesive here


Technical bonding solutions by CTA, based in the West Midlands, UK. Worldwide shipping.


automotive bonding case study

Automotive bonding using structural adhesive

CTA were asked to help a client who had a special automotive bonding request on this stunning supercar.

What was your brief from the client?

They wanted to strengthen the framework and bulkhead of this impressive Audi R8. The R8 is the German car maker’s only mid-engine machine which has gained a reputation in recent years for being “The everyday supercar”. It’s a high quality performance car that demands extreme structural integrity.

Our ‘mission’ was to reinforce the bulkhead near to the suspension components. The brackets themselves were supplied by Audi, so our task was to ensure that we could perfectly bond the two parts and create a high quality, effective reinforcement commensurate with such a prestige automotive product.

What product did you recommend and why?

CTA have a superb range of automotive adhesive and tapes suitable for many applications from panel and trim bonding to specific die cut tapes. Because of this, we had to make certain that we identified the best one for the Audi application. The adhesive would need to prove itself in a demanding metal to metal bonding application to reinforce the bulkhead near the suspension components. We immediately thought of our two-part structural adhesive 2105, as this is suitable for composites or metal brackets (such as cladding), and for GRP / FRP composite structures. For bonding metal to composites, 2105 obtains a higher shear strength than the composite layers, therefore achieving a structural bond between the metal and the composite panel. It is an excellent engineering and manufacturing adhesive. It also has a five-minute working life, a 12 minute fixing time, is capable of filling gaps up to 10mm whilst maintaining it’s structural strength and characteristics – and comes in a choice of a neutral or black finish!

The technical stuff that we love!

A methyl methacrylate is the methyl ester of methacrylate acid. Its primary use is to manufacture a number of different plastics, but it is also the main ingredient in our range of metal adhesive products.

Methacrylate adhesives are supplied in a two-part system that, when mixed, offer a controlled cure speed suited to the application. The cured adhesive can offer incredibly high tensile, shear and peel strength, whilst also resisting impact loads at both elevated and sub-zero temperatures.
The unique chemistry of our two-part structural adhesive 2105 is unrivalled in terms of convenience, ease of use and superior mechanical strength. Use for bonding engineered plastics, composites, steel, aluminium and other alloys. This is metal glue at it’s best

Client feedback

The feedback we received from the client was excellent and he told us that it was easy to apply following on from the preparation process. He told us:

“I just wanted to send you a couple of photos of the small project that I have had recently done using one of your products. The images are of frame reinforcing plates in aluminium attached to the front bulkhead of an Audi R8. The job went without a hitch and I am very pleased with the outcome. Thank you for all your guidance.”
Trevor Hartland

Lessons learned?

Although this was only a ‘small’ job, it still required our technical expertise and knowledge. As more and more clients challenge us with bonding application dilemmas, it cements our belief that our comprehensive range of products ideally support diverse challenges, regardless of whether the jobs are large or small. We pride ourselves on being ‘technical experts’, and welcome challenges such as this.

A powerful structural adhesive for the modern age

We knew that our CTA 2105 Structural Adhesive product would be perfect for this task. It’s a versatile product used in many industries and it lends itself well to automotive bonding requirements. To create a strong and reliable bond relies upon pristine preparation, so we talked our client through the cleaning and preparation process. We have a short instructional video here:



A walkthrough of the bonding process

We always recommend the use of our specially formulated CTA IPA Cleaner Degreaser to ensure that surfaces are clean, dry and free of any dirt, dust and grease. We also talked our client through the best working practice and how to maximise the potential of the adhesive. Here are the parts prepped ready for bonding:


cta -2105 case study automotive sealant and degreaser


The outline of the new part (provided by Audi) was marked to provide a guide for final location:


automotive adhesive car


The end result was a professional reinforcement that is designed to last:


strongest metal bonding adhesive



In summary…
Contact us with ALL your bonding application challenges – we are waiting to fix them for you! If you would benefit by switching to our more advanced structural adhesives and wish to discuss a product or application, please get in touch with us today.

pre powder coat seam sealer case study

15002 Pre powder coat seam sealer case study

15002 Pre powder coat seam sealer is a single part, heat curing adhesive in a convenient 310ml cartridge, developed to aid the paint and powder coating industry.  The following is a case study highlighting the benefits of using CTA 15002 pre powder coat seam sealer 

COE Orchard Equipment make the switch from paint to powder

In 2010 a US manufacturer of tree shakers and bulk handling equipment, COE Orchard Equipment, made the switch from paint to powder.  Benefits include increased durability, higher coating efficiency and reduced cost.  COE manufacture and ship equipment world wide to meet harvesting needs for crops such as almonds, walnuts, pistachios, pecans and olives along with stone fruit such as peaches, prunes and cherries.

Since going from paint to powder, COE have increased their efficiency as a manufacturer, working to reduce labour and improve processes which have allowed them to meet rising demands for their products.  One of the largest growing products is the S7 shaker (for almonds and walnuts).  The S7 “cab” requires over 12,700mm (500″) of weld, a large amount is sealing weld to maintain sanitation in the cab.  After looking at other solutions like silicone and mastic sealants which are not suitable, a search then lead COE to Central Tapes & Adhesives Ltd and our innovative and technologically advanced product, CTA 15002 pre powder coat seam sealer.

After a brief testing period with CTA 15002, COE quickly realised its potential to be a viable solution.  Our heat curing adhesive allowed the customer to reduce the total amount of weld in the cab from 12,700mm (500″) to 6,096mm (240 “).  The 6,096mm is required for the structural strength of the cab and the remainder of the seam is now sealed with CTA 15002 pre powder coat seam sealer.  With the welding process halved, it has saved a considerable amount of labour costs.  COE are extremely pleased with the new process, given its cost saving and improved production and process time.

As a premium product manufacturer, COE Orchard Shakers want to achieve the best finish possible.  Whilst pre-heating the cab frame and components in order to expunge oil and contaminates, it was also an opportunity to apply, cure the sealant and apply the powder coat simultaneously.  Due to its convenient packaging in a handy 310ml cartridge it can be quickly and easily applied in minutes with no additional steps required and only one pass through the oven has been a great advantage to COE.

15002 Pre powder coat seam sealer case study

Pictured to the right is an example of a 3.175mm (1/8″ ) gap between the firewall and the main frame of the S7.  The sealant covers the gap and holds its position in the oven ie. it is paste-like and non-sagging and creates a hard, durable and lasting seal.

In some cases COE say they have even used our product as a body filler over panel flaws.

Shown below is a before and after shot of the top right hand corner of the cab.  You can see, COE have used CTA 15002 adhesive sealant.  In this application, the main frame is 4.77mm (.188″ ) to 25.4mm (1″ ) thick mild steel.  Therefore, in order to cure the thickest part, means parts such as the cab are in the oven for 25-30 minutes longer than needed for powder cure.  CTA 15002 does not discolour or deform from being in the oven longer than necessary, thus allowing more flexibility in use.

15002 Pre powder coat seam sealer case study

15002 Pre powder coat seam sealer case study

The next image is an area where the sealant will not be covered by insulation or by trim.  Due to the high quality finish and the ability to retain the finish, COE have no hesitation in leaving these parts exposed.  Had this been previous silicone or mastic they would have eventually discoloured, looked unprofessional or simply disintegrated in the oven.

15002 Pre powder coat seam sealer case study


In the images below, you can see the completed cab.  With the use of the sealant and cab pressurisation it allows for the cab to be a clean location in a dusty work environment.  COE pride themselves in manufacturing equipment that meets the needs of the grower, techs and operators.

15002 Pre powder coat seam sealer case study

15002 Pre powder coat seam sealer case study


We hope you have enjoyed reading this case study on the use of our 15002 pre powder coat seam sealer.  We are pleased to print the testimonial below, showing that COE recommends CTA 15002 to other manufacturers with similar needs.

“The ease of use, low reactivity and quality of CTA 15002 has made a valuable addition to our equipment and a huge cost saving to COE Orchard Equipment”

Bob – Lead Engineer at COE Orchard Equipment


Referenced product: CTA 15002 pre powder coat seam sealer 

To find out more about any of our products contact us now 0r chat directly with an advisor below!