Complete Adhesive UV Curing Solutions

Jenton UV designs, manufactures and sells modular industrial UV curing and UV drying equipment. With over 25 years of experience, we are familiar with many types of application relating to adhesives, coatings and print within medical, automotive, electronics and industrial markets. We can advise on the exact UV Curing equipment/material combination for your application.

How do UV curable adhesives work?

UV curable adhesives cure during exposure to ultra violet light. The adhesives contain photo- initiators reactive to specific light wavelengths that act as catalysts to promote polymerisation reactions between monomers and oligamers in the material.  This polymerisation reaction typically takes place in seconds or less and thus UV curing is often referred to as ‘instant curing’.

Why use UV curable adhesives?

Curing is fast and products can be handled straight away – allowing more efficient use of jigs or continuous flow in an automated process.

Curing is on demand (when UV light is activated) and thus there is no time pressure as there is with two part or air drying materials for difficult to position or alignment applications. Errors can be corrected / cleaned /reworked without loss of base material.

UV adhesives do not dissolve, melt or weaken the surfaces of the two items to be joined. A strong chemical bond is formed between the two substrates providing a high strength alternative to other curing methods.

UV materials are solvent free and much less energy is required to cure them than heat cure materials. Fully polymerised adhesives are very stable and chemically resistant.

As no diluent is dried off, volume of material cured stays approximately the same giving an aesthetically pleasing finish and reducing concerns related to material shrinkage.

What should be considered in specification of UV equipment and materials.

As with other adhesives, there are specific formulations for different applications which may vary according to strength, shrinkage, surface finish, clarity, adhesion to different materials and ability to cure between surfaces. 

Different materials contain different photoinitiators to achieve different results and these have different absorption characteristics in respect of UV light, both in terms of wavelength and intensity. A wide variety of sources are available from low to high pressure mercury based and doped bulbs to LEDs.

Different applications need UV to be applied in different ways, perhaps in a continuous process such as an automated machine or a conveyor line or in a static jig or workstation. In all cases the optics required to deliver the UV have to be considered (taking into account the absorption of shorter wavelengths by some ‘reflective’ materials etc.) in conjunction with product handling.

Jenton can help develop and optimise your process taking the above considerations into account, supplying your company with both a suitable adhesive and curing mechanism.  We have a test laboratory at our premises in Whitchurch Hampshire and potential customers are welcome to trial  both our adhesives and curing equipment.  We also have surface treating and environmental test chamber facilities.

Jenton Represents EMI, Permabond and Devcon : Specialists in Engineering UV Adhesives/Glue

EMI

EMI is known as "The world leader in UV adhesives and epoxies". Electronic Materials Incorporated has over 15 years of experience formulating and manufacturing UV curable adhesive and epoxy systems for many different industries.

In addition to offering our complete line of EMCAST UV adhesives, epoxies, sealants, encapsulants and coatings, EMI also offers room temperature, thermal and visible light cure adhesive systems.

New product developments include a new line dedicated to the medical device market, MCAST, fully compliant with USP Class Vl

These materials can be electrically and thermally conductive systems, surface mount adhesives, glob tops, and chip underfill materials. With custom formulating, packaging and application services, EMI can provide solutions to all of your adhesive applications, UV and others.

EMCAST Products

UV Curing Adhesives and Specialty Epoxies for Micro Electronics

EMCAST 500 Series

UV and thermal cure, electrically conductive epoxies.

EMCAST 600 Series

Two component, UV and/or thermally cured epoxy systems.

EMCAST 700 Series

Single component, UV and/or thermally cured epoxy systems.

EMCAST 1500 Series

Single component, UV cure epoxy systems for potting, encapsulating and chip coating.

EMCAST 1700 Series

Single component, UV cure adhesives for assembly, tacking, fixturing, staking, globbing and gap filling.

EMCAST 1900 Series

Single component, UV cure conformal coatings for P.C. boards, ferrites and components.

CHIPSHIELD 2000 Series

Single component, UV and/or thermal cured epoxy systems for chip coating and globbing.

OPTOCAST

Ultra violet light and thermally curable epoxy systems designed for opto-electronic assembly.
For full details, clickhere

* 3400 Series

Single component, highly filled system featuring extremely low CTE's and shrinkage upon cure.

* 3500 Series

Single component, optically clear materials for use in and around the light path.

* 3600 Series

Two component, low temperature and room temperature cure materials.

* AC-3700 Series

Extremely fast, single component systems for fixturing, bonding and encapsulating.

EMCAST 4300 Series

Two component thermal cure epoxy systems.

DIEBOND 4600 Series

Single component die attach materials for high speed dispensing.

MCAST

For full details click here

Frequently Asked Questions

1. What are the shipping and storage concerns of EMCAST epoxies?

Depending on the material and its associated cure method, shipping and storage issues vary from no restrictions, to shipment on dry ice and frozen storage. The majority of EMCAST UV curable products can be shipped normal UPS ground service and require only refrigeration for long term storage.

2. What wavelength of the UV spectrum is required to cure EMCAST UV epoxies?

EMCAST epoxies respond to the safer "long wave" part of the UV spectrum which is approximately 310 to 365 nanometers.

3. How much UV is required to cure EMCAST epoxies?

The UV intensity requirement for EMCAST epoxies depends on several factors such as the mass size of material to be cured, substrates, temperature, light sources, etc. Therefore some experimentation is required to find the optimum combination of time vs. intensity. As a starting point EMI recommends an exposure of 30 seconds to 3 minutes of 75-200 milliwatts per square centimeter.

4. Will unexposed areas of EMCAST UV epoxies cure?

EMCAST epoxies possesses what is know as the "dark cure" phenomenon. This phenomenon is that once the material is adequately irradiated and the cure has begun, the cure will continue to completion on its own, even in the dark, but faster in the light and/or heat. This "dark cure" however will not propagate into unexposed areas such as under a device or component. In these applications a material with some sort of secondary cure mechanism such as a Thermal or Visible light will be required to cure these areas.

5. What types of packaging options are there for EMCAST epoxies?

EMI prides itself on offering a wide range of different package types. Currently we are packaging in
3, 5, 10, 30 & 55cc syringes, 60, 100, 250, 500, 1000cc bottles and even 1 and 5 gallon pails.

Permabond

Permabond is a leading manufacturer of engineering adhesives, supplying high quality industrial adhesives to customers worldwide.

Permabond offers a comprehensive range of UV curable adhesives, custom adhesive solutions can also be developed if required. Permabond UV curable adhesives are single part, cure on demand adhesives suitable for bonding a wide range of substrates. Upon exposure to UV light, Permabond UV curable adhesives will cure to a high strength in a matter of seconds.

These adhesives are suited to a wide range of applications such as glass to glass, glass to metal, plastic bonding and the medical device industry.

Permabond Products UV Curing Adhesives

UV 610

Single component, UV curable adhesive, for high strength bonding of glass and metal .
For full details, click here

UV 620

Single component, UV curable adhesive, for general purpose use.
For full details, click here

UV 625

Single component, UV curable adhesive, non drip for bigger gaps and vertical applications.
For full details, click here

UV 630

Single component, UV curable adhesive, for bonding of plastics.
For full details, click here

UV 632

Single component, UV curable adhesive, Low Viscosity, plastic bonding, good adhesion to acrylic.
For full details, click here

UV 640

Single component, UV curable adhesive, for bonding of plastics.
For full details, click here

UV 648

UV curable gel, good adhesion to acrylic.
For full details, click here

UV 670

Single component, UV curable adhesive, suitable for metal/metallized plastic bonding.
For full details, click here

UV 675

Single component, UV curable adhesive, for bonding of bevelled joints .
For full details, click here

4UV 80

Single component, UV curable adhesive, suitable for medical device applications.
For full details, click here

Devcon

Devcon Tru Bond light-cured adhesives offer the flexibility of unlimited open times plus the productivity of instant cure when exposed to UV light. These light cured adhesives are single component, solvent free formulations.

Devcon Products UV Curing Adhesives

Devcon Tru Bond Plastic Bonders 18200 Series

Designed for bonding plastics including ABS, polycarbonate and acrylic. Tru Bond 18200 range of adhesives form flexible bonds with superior resilience and impact resistance. These adhesives cure in seconds when exposed to UV light, even through translucent substrates. Available in a Low, Medium and High viscosity version.
For full details, click here

Devcon Tru Bond Dome Coating 18300 Series

Dome Coating Thick
Thick version is a decorative clear coating used to create hard domes on a number of substrates, for protecting decals mounted on metals and glass.

Protective Coating Thin
Thin version, flows and self levels onto capacitors or resistors and has a very thin (2-10 micron) film to protect flexible substrates.

• Creates a protective coating for decals, tags and emblems
• Prevents marring and scratching
• One component UV adhesive
• Fast curing
• Can be dyed or pigmented

Available in as thick dome coating version, or as a thin protective coating,
For full details, click here

Devcon Tru Bond PSA
18400 Series

Tru Bond 18400 series are UV curable pressure sensitive adhesive (PSA’s). Solvent-free liquids, they can be applied directly to parts or as films and then UV cured to create PSA’s, which can be used immediately to assembly mated parts or for assembly at some future point.

• Exceptional balance of peel strength and creep resistance
• Bonds to a wide range of substrates including PE, PP, Delrin, and most plastics, metals, glass, or ceramics.
• Can be used to form clear bond lines made as a film surface, coating, or bead.

For full details, click here 

Jenton International UK
9/10 Ardglen Industrial Estate, Evingar Road, Whitchurch, HAMPSHIRE  RG28 7BB
UNITED KINGDOM
Tel:+44 (0)1256 892194    Fax:+44 (0)1256 896486

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