The Problem
A leading manufacturer of premium portable lighting was looking to make its safety torches more rugged – they are used by fire fighters, police officers and military troops in the field. Their engineers needed the torches to withstand rough handling and extreme conditions in the field, and to work in a wide range of environments, such as search-and-rescue or life-threatening situations. During product development of some new torches, they decided to fortify the lens and reflector housings by applying a sealant to bond the sub-assembly together.

Strengthening torch lens housings with Dymax adhesive
The Solution
Application engineers from Dymax worked closely with the customer’s team to come up with an innovative solution. After examining and testing the customer’s parts, Dymax Multi-Cure® 621-T was recommended to bond the glass lens to the reflector housing. The decision was made based on Dymax 621-T’s ability to bond dissimilar materials, its fast cure, and excellent adhesion properties.

To bond the sub-assembly, the lens and reflector housing were placed into a small rotary system underneath a dispensing valve and Dymax 621-T was applied in a uniform bead into the bond line. Dymax application engineers suggested using a Dymax 2000-EC Flood Lamp to cure parts post-assembly, because it offered a large 8” x 8” curing area, as well as high-intensity curing in 5-30 seconds. The parts were assembled and then exposed to UV/visible light under the Dymax flood lamp. Rapid curing allowed the bonded parts to swiftly move onto the next step in the manufacturing process with virtually no down/wait time.

The Results
The manufacturer was impressed with the technical expertise provided for a ruggedising adhesive. They were also very satisfied with Dymax Multi-Cure 621-T and with how the Dymax 2000-EC Flood Lamp enhanced their process by curing a large area in just a few seconds. This solution enabled faster processing, greater output, and lower processing costs.

Our digital benchtop fluid dispensers handle a wide range of tasks from depositing microdots to lines to small volume potting and filling. The Fisnar DC100 DC100 Precision Dispensing Controller & Automatic Liquid Dispenser  provides control in the application of virtually any fluid. Latest features including ample program storage, programmable alarms and I/O integration help to improve productivity. It is suitable for medical device manufacturing, electronics, optics, automotive and other precision industries.

We have a new video!

Fluid and liquid dispensing machine, fully digital, fully featured

We are very pleased to announce our participation at the inaugural Engineering Materials Show, happening on June 1 2017 at the Roundhouse in Derby.

The event will welcome decision makers and specifiers from across the UK’s engineering and manufacturing industry who share a professional interest in the practice, technology and science of materials. Key technology areas include: ceramics, metals and alloys, composite materials, polymers, glasses, biomaterials, functional materials, nanotechnology and adhesives. The Show is to be held at the iconic Derby Roundhouse at the centre of the UK’s engineering and manufacturing heritage.

We will be exhibiting, and also delivering a seminar entitled The Art and Science of Choosing a Structural Adhesive.

The event is free to attend – register now! See you there.

engineering materials show

This video on our YouTube channel compares and contrasts our most popular Thinky Mixers, using the mixing and defoaming of silicone resin as an example. The manufacturer’s video shows a Thinky ARE-310 – the equivalent machine available in Europe is the Thinky ARE-250, which is functionally the same.

Thinky mixers use a combination of rotation and revolution to mix, disperse, degas and defoam your materials in a container. The video shows some air being deliberately mixed into some silicone, and the resin with bubbles put into a Thinky ARE-310. In a few minutes, the silicone is clear with no visible air bubbles. The same material is then placed into a Thinky ARV-310, which is the same machine but with an integral vacuum, for further treatment – degassing and defoaming. A visual inspection shows an even better result, which is quite apparent in the video. This Technical Bulletin about Vacuum Mixing & Degassing has further discussion about these differences.

A small amount of orange pigment is mixed into the silicone, which results in an even dispersion. A large amount of powder is then added, which is completely mixed into the resin in about a minute.

Thinky mixers are completely programmable, and have memories to store your programmes or “recipes”. The Thinky ARV-310 has a special version, the Thinky ARV-310LED, for LED phosphor dispersion.

We can show you these same results in our Technology Centre – come and see us!

Video compare Thinky mixers with silicone resin mixing and defoaming

New developments and applications in energy and electrical engineering can require ever higher levels of thermal conductivity – hence our partners Polytec PT are developing the next generation of thermally conductive two-part epoxy adhesives.

These new high performance adhesives offer excellent thermal conductivity, so enhancing the effectiveness of heat paths found in applications such as LED heat sink attachment, chip assembly, encapsulation, potting of thermal sensors, assembly of power modules, connection of pipes in heat exchangers and the bonding and potting of battery cells and electric motors. They can help optimise production processes with a choice of accelerated thermal cures in about 15 minutes or 24 hours at room temperature.

A good example is Polytec TC 433, an advanced semi-rigid boron nitride filled adhesive. It features 2 W/m·K thermal conductivity and a glass transition around 110°C after thermal curing, withstanding up to 220°C continuous operation temperature.

Thermally conductive adhesives

We’re delighted that our recently enlarged and refurbished Technology Centre is buzzing with activity, with customers visiting most days of the week to discuss their applications and to evaluate materials and processes with our technical specialists.

For specific trials, we provide comprehensive reporting on bonding, dispensing and application, curing, mixing and/or surface preparation tests conducted in our Technology Centre with our team. These reports detail the pre-defined objectives, equipment and materials used, methodology, results and conclusions, supported by photographs and videos. This reporting provides robust evidence that the material and/or equipment route proposed by our customer – frequently under advice from ourselves – is the appropriate one for the application in hand.

We invite you to bring your parts, substrates or process materials and to spend some time in the Technology Centre. We have a bench-busting array of material samples and demonstration equipment to work with. And the kettle is always on!

Technology Centre lab trials, demonstrations and evaluations