DELO PHOTOBOND UV and Light Curing Acrylate Adhesives
DELO PHOTOBOND covers acrylate-based adhesives that cure within seconds of UV or visible light exposure, producing optically clear, tack-free bonds with minimal shrinkage. The range serves applications in architectural glass, display manufacturing, medical devices, LED packaging, and consumer wearables across viscosities from 60 to 210,000 mPa.s.
What is a UV-Cured Acrylate Adhesive?
Acrylate adhesives cure through free-radical polymerisation. When UV or visible light hits the photoinitiator in the adhesive, it generates free radicals that trigger rapid cross-linking across the adhesive film. The reaction is fast, typically reaching handling strength within seconds of light exposure, and stops when the light source is removed.
This on-demand curing behaviour is what makes acrylate adhesives well-suited to high-speed production processes. The adhesive stays liquid and workable until the moment light is applied, giving operators time to position components accurately before committing to the bond.
Key features of DELO PHOTOBOND UV-cured acrylates include:
- Optical clarity: many formulations cure water-clear, making them suitable for display bonding, glass assembly, and optical applications where the adhesive joint must remain invisible
- Fast cure speed: handling strength achieved in seconds under UV or visible light, supporting short cycle times in automated production
- Substrate versatility: reliable adhesion to glass, plastic, metal, and ceramic without priming in most applications
- Formulation range: products available from highly flexible grades with elongation up to 390% through to hard, high-strength structural formulations
- Biocompatibility: selected grades carry USP Class VI certification and meet ISO 10993-5 for cytotoxicity, supporting use in medical device manufacturing
UV Adhesive Resources
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DELOLUX 20 Series Area Curing Lamps Brochure
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DELOLUX 30 Series Small Area Curing Lamps Brochure
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DELOLUX 50 Series High-intensity Spot Lamps Brochure
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DELO-DOT PN5 Series Microdispensing Valves and Cleaning Station Brochure
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DELO-DIV Series Volumetric Dispensing Systems Brochure
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Flexible Liquid Seals
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Versatile Applications Across Industries
Valued for their curing speed, precision and reliability, DELO PHOTOBOND adhesives enable fast UV curing and durable bonds in a wide range of applications.
In medical device manufacturing, they support biocompatible bonding.
The optics, photonics, and glass industries benefit from their high transparency, low shrinkage, and crystal-clear bonds, whilst they are widely used in automotive electronics, LED assembly, and precision engineering, where light-activated and UV cured adhesives ensure consistent performance and process efficiency.
UV Adhesive Curing Systems
Inseto offers a comprehensive range of UV LED curing systems, specifically optimised for use with DELO PHOTOBOND adhesives. These advanced systems deliver consistent, high-intensity light output, ensuring rapid and reliable curing across a wide variety of applications.
Whether used in manual workstations or fully automated production lines, DELO’s LED curing lamps provide precise wavelength control and uniform exposure, which is critical for achieving optimal adhesive performance.
DELO PHOTOBOND Applications
DELO PHOTOBOND UV and light-curing acrylate adhesives serve a wide range of bonding and sealing applications where optical clarity, fast cure speed, and strong adhesion to glass and transparent substrates are the primary requirements.
Architectural and Decorative Glass Bonding
The PHOTOBOND GB sub-range is formulated specifically for glass-to-glass and glass-to-metal bonding in architectural and decorative applications. GB-series adhesives are UV-resistant and weatherproof, making them suitable for exterior facade elements, structural glass joints, shower enclosures, and decorative hardware where the bond line must remain clear and stable over time. Viscosities range from 60 to 5,700 mPa.s across the sub-range, covering both low-viscosity capillary flow applications and thicker structural joints.
Display Assembly and Cover Glass Bonding
The PHOTOBOND LA sub-range uses light activation followed by humidity curing, giving it the ability to bond opaque or non-transparent substrates where a purely UV-cured system cannot reach the full bond area. LA-series adhesives are used in display integration, cover glass bonding, and LiDAR assembly, with very low glass transition temperatures, maintaining flexibility across a wide operating temperature range.
Optical Component Assembly and LED Packaging
The PHOTOBOND OB sub-range is optimised for active alignment of optical components, where low outgassing, stability against yellowing, and consistent curing shrinkage are required to maintain optical path integrity after assembly. OB-series adhesives are used in exterior and interior lighting, LED packaging, and camera lens assembly, with selected grades meeting NASA outgassing requirements.
Structural Joining of Glass and Metal
The PHOTOBOND SJ sub-range covers structural bonding of glass to metal and glass to plastic, where higher bond strengths are required than a standard glass bonding grade provides. SJ-series adhesives are used in precision engineering, consumer electronics, and industrial assembly, with viscosities from 6,000 to 90,000 mPa.s across the range.
Medical Device Manufacturing
Selected DELO PHOTOBOND grades carry USP Class VI certification and meet ISO 10993-5 for cytotoxicity, supporting their use in medical device bonding and sealing applications. Grades meeting ISO 10993-10 for skin sensitisation and ISO 10993-23 for skin irritation are also available, covering a broader range of medical and wearable device requirements.
Gasketing and Sealing
The PHOTOBOND SL sub-range covers cure-in-place gasket applications, with viscosities up to 210,000 mPa.s, producing formed-in-place seals on housings, enclosures, and covers. Selected grades meet ISO 10993-5 for cytotoxicity, extending their use into medical and wearable device sealing.
Got a Question About UV Adhesives?
Whether you’re developing a new product or refining an existing process, Inseto’s team of experts is here to help. From selecting the right UV cured adhesive to optimising your curing process, we provide technical guidance, documentation, and samples to support your application needs.
To explore how DELO PHOTOBOND UV adhesives can enhance your manufacturing processes, please get in touch.
Example Applications using UV Adhesive
DELO PHOTOBOND UV Adhesive Product Range
DELO PHOTOBOND GB Glass Bonding Products
- Optically transparent adhesives (Glass Bonding)
- UV-resistant and weatherproof
- Tension-equalizing
- Used for glass bonding (glass-glass and mixed glass), decorative elements
Product GB310
Properties
60 Viscosity
UV Cured
Colourless
Hard stiff adhesive after cure, ideally suited for glass bonding
Product GB368
Properties
5,700 Viscosity
UV & Light Cured
Colourless
Dry surface after cure, ideally suited for glass bonding
Product GB422
Properties
4,000 Viscosity
UV & Light Cured
Colourless / fluorescent
High humidity resistance, bonds a wide range of materials
Product GB4033
Properties
5,500 Viscosity
UV & Light Cured
Blue / fluorescent
High humidity resistance, excellent peel strength
Product PB437
Properties
8,000 Viscosity
UV & Light Cured
Colourless
Ideal for bonding glass and plastics
Product 4436
Properties
300 Viscosity
UV & Light Cured
Colourless
Flexible – 250% elongation, multi-purpose adhesive
Product 4442
Properties
650 Viscosity
UV & Light Cured
Colourless
Flexible – 390% elongation, USP Class VI Certification
Product 4468
Properties
7,000 Viscosity
UV & Light Cured
Colourless
High humidity resistance, USP Class VI Certification
Product 4494
Properties
20,000 Viscosity
UV & Light Cured
Colourless
A tough, hard, run-resistant adhesive for plastic & glass
DELO PHOTOBOND LA Light Activated Products
- Light-activated humidity curing
- Very flexible
- Very low glass transition temperature (Tg)
- Used for display integration, cover glass bonding, LiDAR
Product LA4860
Properties
70,000 Viscosity
Light-activated, light & humidity cured
Colourless / fluorescent
Ideal for bonding non-transparent materials
Product LA4878
Properties
100,000 Viscosity
Light-activated, light & humidity cured
Yellowish / transparent
Ideal for bonding non-transparent materials
Product LA4880
Properties
70,000 Viscosity
Light-activated, humidity cured
Yellowish / fluorescent
Meets ISO 10993-5 for cytotoxity
Product LA4893
Properties
45,000 Viscosity
Light-activated, humidity cured
Yellowish / transparent
Passes ANSI/UL HB94 flame test
DELO PHOTOBOND OB Optical Bonding Products
- Optimized for optical bonding (Optical Bonding)
- Fast light-curing for short cycle times
- Low outgassing
- Stable to yellowing
- Moisture resistant
- Used for exterior & interior lighting, LED packaging
Product OB4189
Properties
75,000 Viscosity
UV & Light Cured
Whitish / translucent
For active alignment of optics
Product OB4210
Properties
3,750 Viscosity
UV & Light Cured
Colourless / transparent
For active alignment of optics
Product OM4310
Properties
2,100 Viscosity
UV & Light Cured
Colourless / transparent
For optics manufacturing, meets ISO 10993-5 for cytotoxity
DELO PHOTOBOND SJ Structural Joining Products
- Optimized for structural bonding (Structural Joining)
- Fast light-curing for short cycle times
- Robust universal bond strengths
Product SJ4027
Properties
25,000 Viscosity
UV & Light Cured
Colourless / transparent
For bonding glass to metal
Product SJ4054
Properties
6,000 Viscosity
UV & Light Cured
Colourless / transparent
For bonding glass to metal
Product SJ4056
Properties
6,500 Viscosity
UV & Light Cured
Red, fluorescent
Goods general purpose adhesive
Product SJ4153
Properties
47,000 Viscosity
UV & Light Cured
Yellowish
Goods general purpose adhesive
Product SJ4195
Properties
90,000 Viscosity
UV & Light Cured
Colourless
Goods general purpose adhesive
Product SJ4270
Properties
53,000 Viscosity
UV & Light Cured
Yellowish / transparent
Goods general purpose adhesive
Product SJ4391
Properties
17,000 Viscosity
UV Cured
Colourless / translucent
Stacking / bonding of optical components
Product UB4086
Properties
110,000 Viscosity
UV & Light Cured
Red, fluorescent
Ideal for bonding glass and plastics
DELO PHOTOBOND Miscellaneous Products
- General purpose adhesives
- Cure-In-Place-Gasket (CIPG) products
- Optimized flow behavior
- Adjustable from flexible to hard
Product AD470
Properties
18,000 Viscosity
UV & Light Cured
Red / fluorescent
Very soft adhesive – Shore 00 of 20
Product AD484
Properties
37,000 Viscosity
UV & Light Cured
Red / fluorescent
High peel resistance
Product AD485
Properties
80,000 Viscosity
UV & Light Cured
Red / fluorescent
Highly flexible, low Tg (-16°C)
Product AD489
Properties
80,000 Viscosity
UV & Light Cured
Green / fluorescent
Highly flexible, good peel strength
Product AD491
Properties
40,000 Viscosity
UV & Light Cured
Colourless
Meets ISO 10993-5 for cytotoxity
Product AD494
Properties
32,000 Viscosity
UV & Light Cured
Colourless
Passes ANSI/UL HB94 flame test
Product AD4085
Properties
32,000 Viscosity
UV & Light Cured
Blue / fluorescent
Very soft adhesive – Shore 00 < 10
Product FB4176
Properties
45,000 Viscosity
UV & Light Cured
Yellowish / transparent
Bonds to a wide range of materials
Product MF4045
Properties
3,000 Viscosity
UV & Light Cured
Yellowish / fluorescent
Bonds to a wide range of materials
Product MG4094
Properties
43,000 Viscosity
UV & Light Cured
Colourless / fluorescent
Highly flexible, meets ISO 10993-5 for cytotoxity
Product MG4202
Properties
22,000 Viscosity
UV & Light Cured
Colourless / transparent
Meets ISO 10993-5 for cytotoxity, ISO 10993-10 for skin sensitisation & ISO 10993-23 for skin irritation
Product MG4242
Properties
15,000 Viscosity
UV & Light Cured
Blue / transparent
Very flexible, meets ISO 10993-5 for cytotoxity
Product RM4243
Properties
17,000 Viscosity
UV & Light Cured
Red / fluorescent
Very soft , debondable (by heat) adhesive
Product SD496
Properties
35,000 Viscosity
UV & Light Cured
Blue / fluorescent
Very flexible, dry surface after curing
Product SL4156
Properties
210,000 Viscosity
UV & Light Cured
Colourless / fluorescent
Cure-In-Place-Gasket (CIPG) product
Product SL4165
Properties
124,000 Viscosity
UV & Light Cured
Colourless / fluorescent
Cure-In-Place-Gasket (CIPG) product, meets ISO 10993-5 for cytotoxity
Product SL4166
Properties
180,000 Viscosity
UV & Light Cured
Blue / fluorescent
Cure-In-Place-Gasket (CIPG) product
Knowledge Base Articles
Description
Description
UV Adhesives – Lighting the Way Forward: DELO’s UV Adhesives and Their Impact on Modern Manufacturing (IKB-090)
Link
Description
Lamps for Curing UV Adhesives (IKB-074)
Link
Description
Basic Adhesive Types (IKB-041)
Link
Description
Adhesives for PCBs (IKB-040)
Link
Description
How to Choose the Right Adhesive (IKB-035)
Link
Description
All Things Considered (IKB-042)
Link
Description
Explanation of Low Pressure Plasma Cleaning (IKB-014)
Link
Related Products
FAQs
What substrates do DELO PHOTOBOND adhesives bond to?
DELO PHOTOBOND acrylate adhesives bond to glass, metal, plastic, and ceramic substrates. Specific grades are formulated for glass-to-glass, glass-to-metal, and glass-to-plastic joints, with high humidity resistance and peel strength available across the range. For bonding to non-transparent or opaque substrates, the light-activated LA sub-range uses humidity as a secondary cure mechanism to complete the bond where UV light cannot reach the full joint area.
How quickly do DELO PHOTOBOND adhesives cure?
DELO PHOTOBOND adhesives reach handling strength within seconds of UV or visible light exposure. Cure speed depends on the light source intensity, wavelength, and the adhesive grade selected. Inseto can advise on compatible DELOLUX curing lamps and recommend the appropriate light dose for your specific application and production cycle time.
Are any DELO PHOTOBOND grades suitable for medical devices?
Yes. Several DELO PHOTOBOND grades carry USP Class VI certification and meet ISO 10993-5 for cytotoxicity. Grades meeting ISO 10993-10 for skin sensitisation and ISO 10993-23 for skin irritation are also available. Inseto can provide full certification documentation for relevant grades on request.
What is the difference between DELO PHOTOBOND and DELO KATIOBOND?
DELO PHOTOBOND uses free-radical acrylate chemistry, delivering fast cure speeds, optical clarity, and high flexibility. It is best suited to glass bonding, optical assembly, display manufacturing, and medical applications. DELO KATIOBOND uses cationic epoxy chemistry, giving it dark cure capability and temperature resistance up to 180°C, making it better suited to electronics, automotive, and potting applications where shadow zones or high operating temperatures are a factor.
What is the difference between DELO PHOTOBOND and DELO DUALBOND?
DELO PHOTOBOND grades cure fully through UV or visible light exposure alone. DELO DUALBOND uses a secondary heat or humidity cure to complete polymerisation in shadow zones and complex assemblies. PHOTOBOND is the better fit for applications with full light access to the bond area and where optical clarity or biocompatibility is a requirement.
Can I get samples or technical support from Inseto?
Inseto provides technical support, product documentation, and samples for the full DELO PHOTOBOND range. As the exclusive UK and Ireland DELO distributor, Inseto can advise on grade selection, compatible curing equipment, and process setup for your specific application. Send an enquiry using the form below or call us on +44 (0)1264 334505.
Further Information
UV Adhesive Applications
Bonding, Sealing, Encapsulation; Glass-Metal, Glass-Plastic & Plastic-Plastic Bonding; Fit-In-Place Gaskets, Pressure Sensitive Tape Replacement; Display Bonding & Sealing
Industry Segments
Communications, Electronics, Automotive, Displays, Loudspeakers, LEDs, Photovoltaic, Wearable’s, Medical, Shower Units, Plastic & Glass Processing etc.
View more details about PHOTOBOND on the DELO Website
https://www.delo-adhesives.com/products/adhesives/detail/delo-katiobond
Region
Available from Inseto in the United Kingdom & Ireland
Request Form
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