Overmoulding Materials

As functionality increases in modern day electronics, cable designs are becoming more complex and there assembly is continuously challenging. The protection traditionally achieved with potting and encapsulation is often no longer suited to most projects. Low Pressure Overmoulding using overmoulding materials is the cleaner, faster, safer alternative.

At Overmould Ltd we offer a wide range of low pressure moulding materials for differing overmoulding application requirements.

Henkel Logo

Henkel Technomelt® & Low Pressure Moulding (thermoplastic overmoulding) enable you to mould in any shape around various products including electronics, cables and PCBs. Established for over 20 years and proving itself across a variety of sectors, Henkel Technomelt® overmoulding materials, used in conjunction with specialist Low Pressure Moulding equipment, offers a superior adhesion sealing for electronics and cables.

Henkel is the world leader in high performance adhesive materials. …. Overmould is the approved UK distributor for LOCTITE® and Henkel TECHNOMELT® where we maintain stock in house. We do also offer other materials such as Epoxy potting, RTV silicone and can order in a diverse range of LOCTITE® and Henkel TECHNOMELT® to accommodate your product requirements.

Overmould Logo

Eco Credentials of Henkel Technomelt®

Recycling icon

Henkel Technomelt® overmoulding materials can be moulded into any shape or form and allow the creation of aesthetically pleasing designs using one or more colours of Henkel’s materials, different surface textures and the addition of intricate logos, model numbers and serial information.

LOCTITE® and TECHNOMELT® Low Pressure Moulding materials simplify assembly and protect cable designs in a few easy steps, improving reliability, simplifying production and reducing costs.

Technical Details of Henkel Technomelt®

overmoulding of PCBs

Henkel Technomelt® operating temperature, varies depending on the variant used, but is typically 200-250*C. It is, in essence, a powerful Hot-Melt adhesive that bonds well to a variety of substrates. The grip onto PVC is excellent which makes it ideal for sealing and anchoring cables to connectors whilst simultaneously IP sealing the assembly to high levels. In addition, Henkel’s TECHNOMELT® and LOCTITE® polyamides bond well to aluminium, steel, PCB’s, and solder as well as other metals found in todays electronics assemblies. Even when a part moulded in Henkel Polyamide material is chilled, a flexibility is retained at below zero degrees. It also holds excellent rigidity to 160°C or higher with selected variants. Electrical insulation is outstanding at typically 10,000 GΩ/cm and dielectric breakdown will not occur up to stresses of 20kv/mm.

Henkel Technomelt® Products

ovemoulding materials - Henkel Technomelt PA 6208 Black

Henkel Technomelt® PA 6208 Black

  • Formerly known as MACROMELT MM 6208S
  • Consistent glossy, black colour
  • Low viscosity
  • High adhesion strength to challenging surfaces including metals and ABS
  • High dielectric strength
  • Improved flexibility at low temperatures

Electronics including Printed circuit boards, Electronic components, Sensors & Control systems in outdoor & indoor environments

ovemoulding materials - Henkel Technomelt PA673 amber

Henkel Technomelt® 673 Amber

  • Easy mouldability
  • Good adhesion to a variety of substrates
  • Excellent moisture resistance
  • Excellent environmental resistance
  • Solvent free
  • UL – listing

Automotive under bonnets where high service temperature performance is critical

ovemoulding materials - Henkel Technomelt PA2302 Black

Henkel Technomelt® PA2302 Black

  • Produces no toxic fumes
  • Provides a good balance of low and high temperature performance
  • Low viscosity at operating temperature, allowing encapsulation of fragile components and assemblies like ECU’s without damage.

Developed for the automotive industry

ovemoulding materials - Henkel Technomelt PA657 Black

Henkel Technomelt® PA 657 Black

  • Good adhesion to a variety of substrates
  • Low viscosity – enclosing fragile components without any damage
  • Produces no toxic fumes in process
  • Provides a good variation for low and high temperatures
  • Excellent moisture resistance
  • Good environmental resistance
  • Simplified process flow

Automotive exterior and white goods

ovemoulding materials - Loctite PA 6732 Amber

Loctite® PA 6732 Amber

  • Tested and approved to ISO 10993 biocompatibility. (Medically approved)
  • Protection and encapsulation
  • Designed for use in temperatures between -40C to 140C
  • Stream-lined product design
  • Faster cycle times and one step processing
  • Suitability beyond electronics. E,g. medical devices
  • Certificates available upon request

Completely encapsulate medical devices including catheters, tube sets, connectors, and surgical tools

ovemoulding materials - Henkel Technomelt PA678

Henkel Technomelt® PA678

  • Low viscosity allowing fragile components to be coated without damage
  • Balance of low and high temperature performance
  • Easy mouldability
  • Good adhesion to a variety of substrates
  • Excellent moisture and environmental resistance
  • Very short open time

Automotive under bonnets where high service temperature performance is critical

ovemoulding materials - Henkel Technomelt PA6208 amber

Henkel Technomelt® PA6208 Amber

  • Used for moulding, filter and other general applications.
  • Good adhesion to a variety of substrates including fabrics, leather, metals, wood, ABS and flexible vinyl

General assembly work

ovemoulding materials - Henkel Technomelt PA6481 Black

Henkel Technomelt® PA6481 Black

  • Typically used for low pressure injection mouldings
  • Offers improved UV stability
  • Designed to be used with a hotmelt injection system

Outdoor moulding applications

Loctite-PA-6682

Loctite® PA 6682

  • Tested and approved to ISO 10993 biocompatibility (medically approved)
  • Protection and encapsulation
  • Designed for use in temperatures between -25C to 105C
  • Stream-lined product design and colourless
  • Faster cycle times and one stop processing
  • Suitability beyond electronics. E.g medical devices
  • Certificates available upon request

Completely encapsulate medical devices including catheters, tube sets, connectors, and surgical tools

ovemoulding materials -Henkel Ultra clear SI 5710

Ultra clear SI 5710™

  • High transparency with a high transmission rate
  • An ultra-clear, two-part silicone which cures at room temperature & can be accelerated by heat
  • Releases no-by products,  is non-corrosive & is health & safety friendly
  • Low shrinkage

Potting applications, coating processes, lighting, electrical & optical – lenses & optical sensors

Henkel Technomelt PURmelt cleaner

Technomelt® PUR Cleaner 2

  • Blue coloured, solvent-free hotmelt cleaning agent
  • Suitable to use on all standard hot-melt equipment
  • Using this product in your machinery saves money and time. Avoid potential blocked filters, poor injection performance and failed moulds
  • Reduces maintenance and repair downtime