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FASTENINGS & ADHESIVES
PRODUCTS & APPLICATIONS ADHESIVE RANGE IS UP TO THE CHALLENGE OF JEWELLERY BONDING
As a manufacturer of unique stainless steel jewellery, Bailey of Sheffield’s core product is its bracelet, manufactured from locally supplied, marine-grade 316L stainless steel. The bracelets come in a range of PVD colours and finishes and can be fully personalised. However, a challenge involved the bonding of precision-machined stainless steel clasp components to both ends of the bracelet cable. “Within our workshop we were seeing a
tiny number of bracelets failing our 44-point quality control procedure regarding the bonding of clasps to cable ends with another adhesive brand,” explains Scott Bailey. “We want our products to last more than a lifetime so I set Henkel the challenge of finding the right epoxy adhesive for the job.” So, Henkel recommended LOCTITE 9466
toughened epoxy adhesive to provide a high- strength, durable bond. This neutral-coloured product would also offer good resistance to soaps and shampoos, and facilitate easy application and room temperature curing. “Having tested the bonded parts at The
University of Sheffield, we went live with LOCTITE 9466 within just a few months of my first phone call. Thousands of bracelets have since been assembled using this product.” The company was, however, already a
LOCTITE user. It manufactures precision- machined stoppers that secure beads in position on its bracelets, if that is the customer
preference. Two M2 grub screw (3mm long) hold the stoppers on the bracelet. “Despite machining tolerances of
one-fifth of a human hair, we found that it was possible for a small number of grub screws to work loose over time,” Bailey explains. “We tried adjusting the machined thread on our stopper, as well as different grub screws. However, it was my retired father, an engineer by trade, who suggested that I should use a thread locker, and I haven’t looked back since. It’s now also used to secure our single and double Capsule beads that allow customers to keep their loved ones’ ashes close to them.” Following its success with the
bracelet clasps, the next challenge involved the bonding of tiny 1mm2 custom magnets into 48 holes on four spools that form part of the company’s Word Play bead. This concept allows customers to index discs and create multiple four-letter words. The magnets ensure the alignment of each letter as it indexes. “There was a new type of magnet available
that we wanted to use but it was proving problematic for our existing adhesive,” Bailey says. “Henkel duly proposed LOCTITE 290 penetrating adhesive and a suitable activator. We now have a belt-and-braces methodology to
ADHESIVE PRODUCTIVITY FROM THE GET-GO
LED UV adhesives can boost productivity in many assembly applications
“It became clear at an early stage that a UV light cure adhesive was the only way to do the job. It would give us the opportunity to apply, assemble and inspect at our leisure so we could ensure full coverage and no bubbles. We were able to cure in seconds so we could move on almost instantly and with
full confidence in the integrity of the work we were building up.” UV curing materials offer lots of benefits in the production process, from
rapid on-demand curing which reduces production bottlenecks, to easy application, to process control and repeatability. Next generation LED UV light curing adhesives offer an even better process experience, including cooler curing temperatures, lower energy consumption, and reduced costs. UV light curing adhesives bond plastics, metal, glass and many other
substrates. They find many applications in electronics, medical device assembly, aerospace, opto-electronics, optics, automotive and displays. Whether you’re bonding, encapsulating, coating or temporarily
masking parts, there might be a UV light curing adhesive that will maximise your productivity. If you want your production team to thank you for your foresight, let’s chat about whether UV light curing adhesives could be right for your application.
Intertronics
info@intertronics.co.uk
T: 01865 842842
intertronics.co.uk
achieve 100% activation. Another problem solved.” Bailey of Sheffield also involved Henkel in the
development of a new bracelet product. The Glow Beads contain a fluorescent glow stick (tritium isotope lamp) that requires putting and sealing within its housing. For this, Henkel recommended LOCTITE 9483 epoxy potting adhesive.
Henkel
www.henkel-adhesives.co.uk
Ultra-fast, clean, reliable bonding
Dymax LED UV light curing adhesives, sealants, coatings, gaskets and encapsulants offer:
• Cure in seconds
• Quality assurance features including Encompass™ for visible cure and placement veri cation
• A wide range to choose from; nd the most suitable for your substrates and application
01865 842842
info@intertronics.co.uk intertronics.co.uk
Intertronics Medical Device Adhesives Qtr Page 126x86 ad
MAY 2022 DESIGN SOLUTIONS 27
• Technology from a global leader in UV curing materials and systems
In addition to materials, we offer matched application and curing equipment for a complete process.
Find out more from Dymax’s most experienced distributor in Europe.
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