Glass bonding in automated production

Glass Adhesives

Bonding glass to glass, glass to metal or glass to polycarbonates can be challenging – not so with Hoenle’s glass adhesives. As glass is transparent or translucent, UV curable adhesives are the best choice for ensuring a reliable,  permanent, and invisible bond.

The majority of Hoenle’s glass adhesives will cure under UV light or visible light. Adhesives that were specially adapted to cure under visible light are the perfect solution to bond UV blocked glass (such as VSG). Both our UV and visible light curable adhesives for glass bonding can be used with either monochromatic LED light sources or broad spectrum UV discharge lamps.

 

Curing in fractions of a second, our Vitralit® glass adhesives reduce assembly time and lower total process costs. These adhesives ensure high strength bonding of glass to glass, glass to metal (typically to steel or aluminium), or glass to other dissimilar substrates, including polycarbonate and acrylic. These adhesives are ideal for flat glass, float glass, tempered glass, and most other glass compositions.

 

Vitralit® glass adhesives are single component and solvent-free, easy to dispense and to handle. Many are available in multiple viscosity ranges, from water-like wicking grades to highly filled thixotropic gels.

Vitralit® glass adhesives can be specifically matched to the unique requirements of the application. Selections can be made based on the adhesive’s optical clarity, refractive index, or resistance to environmental stresses including temperature and humidity. To minimize movement and stress in optics, Vitralit® adhesives are available with low CTE (coefficient of thermal expansion), low shrink during cure, and high Tg. For medical applications, Hoenle possesses a variety of medical grade adhesives that are biocompatible and are resistant to common sterilization processes.

 

Hoenle’s glass adhesives are used to bond optical assemblies, mirrors, hardware for glass shower enclosures, display cases, outdoor lighting, decorative bevels or bonding of electronic displays. Medical applications include the bonding of metal cannulae into glass syringes.

Below is a selection of light curable glass adhesives and glass bonding solutions. Please open one of the links below to view the technical data sheet.

Glass Adhesives for Optoelectronics

Adhesive Application Areas Viscosity [mPas] Base Curing * Special Properties
- 250-400 (LVT, 25 °C, Sp.3/30rpm) epoxy UV
  • Very high glass transition temperature
  • excellent chemical resistance
  • low attenuation
- 10,000-20,000 epoxy UV secondary heat cure
  • low shrinkage
  • very high Tg
  • low heat expansion
  • optical cement
  • lens bonding cement
  • glass bonding
  • potting material
600-1,250 epoxy UV
  • Very high tg
  • low attenuation
  • high transmission
  • high chemical resistance
  • nanostructured fillers
  • optical cement
  • lens bonding cement
  • glass bonding
  • potting material
350-850 (LVT, 25 °C, Sp. 3/60 rpm) epoxy UV secondary heat cure
  • low attenuation
  • very high Tg

*UV = 320 – 390 nm          VIS = 405 nm

Flexible Glass Adhesives

Adhesive Application Areas Viscosity [mPas] Base Curing * Special Properties
  • Bonding of flexible components;
  • Attaching components on PCBs
900-1,500 (LVT, 25°C, Sp. 3/30 rpm) acrylate UV VIS
  • Dry surface after curing,
  • biocompatible: certified to USP Class VI and ISO 10993-5 standards
  • Bonding of flexible components;
  • Attaching components on PCBs
4,000-8,000 acrylate UV VIS
  • dry surface after curing
  • flexible and tear-proof
  • excellent adhesion to many plastics
- 12,000-30,000 acrylate UV VIS
  • Elastic
  • high peel strength
  • optically clear
  • very flexible
  • stable gel
  • Encapsulation of electronic components
1,000-1,500 acrylate UV VIS
  • Elastic
  • high peel strength
  • optically clear
  • very flexible
  • suitable for potting
- 10-100 acrylate UV VIS
  • Flexible
  • perfect solution for bonding large surfaces
  • high peel strength
- 50-150 acrylate UV VIS
  • Transparent
  • elastic
  • high peel strength
Vitralit® VBB-N2 SV
- 300-500 acrylate UV VIS
  • very elastic
  • high peel strength
  • suitable for large-area bonding

*UV = 320 – 390 nm          VIS = 405 nm

Glass adhesives for bonding with metals, glass, ceramics

Adhesive Application Areas Viscosity [mPas] Base Curing * Special Properties
  • needle bonding
  • bonding glass apparatus
600-900 acrylate UV VIS secondary heat cure
  • non-yellowing
  • excellent flow properties
  • certified to USP Class VI and ISO 10933-5 standards
  • needle bonding
  • bonding glass apparatus
3,000-6,000 acrylate UV VIS secondary heat cure
  • non-yellowing
  • excellent gap-filling
  • certified to USP Class VI standards
  • shear thinning
- 4,000-6,000 (LVT 25°C, Sp. 4/30 rpm) acrylate UV secondary heat cure
  • excellent adhesion to stone, glass, metals and thermoplastics
  • medium viscosity
- 20-100 (LVT 25°C, Sp. 2/60 rpm) acrylate UV secondary heat cure
  • high purity
  • specially formulated for bonding glass
- 800-1,200 acrylate UV secondary heat cure
  • very high adhesion to stone, glass, metals and thermoplastics
  • high temperature resistance
- 3,000-6,000 (Rheometer, 25°C, 10s^-1) acrylate UV secondary heat cure
  • contains chemical activator
  • high temperature resistance
  • high viscosity
  • excellent adhesion to stone, glass, metals and thermoplastics
- 600-1,000 (LVT 25°C, Sp. 3/30 rpm) acrylate UV VIS
  • High strength and impact resistance
  • very high adhesion to glass
  • metals
  • and anodized aluminium
  • transparent

*UV = 320 – 390 nm          VIS = 405 nm

General glass adhesives

Adhesive Application Areas Viscosity [mPas] Base Curing * Special Properties
  • optical cement
  • lens bonding cement
  • glass bonding
  • medical device bonding
200-400 (LVT, 25°C, Sp. 2/30 rpm) epoxy UV secondary heat cure
  • low shrinkage
  • low heat expansion
  • very high tg
  • excellent chemical resistance
  • certified to ISO 10993-5 standards
  • Medical devices bonding
  • Flexible potting
  • Optics
150-300 (Brookfield LVT, 25 °C, Sp. 2/30 rpm) epoxy UV secondary heat cure
  • flexible
  • certified to USP Class VI and ISO 10993-5 standards
  • resistant to all common sterilization methods
- 5,000-8,000 (LVT, 25 °C, Sp. 4/30 rpm) epoxy UV
  • Very high adhesion to most thermoplastics
  • low shrinkage
  • high temperature resistance
- 200-400 epoxy UV
  • Dry surface after UV-curing
  • scratch-resistant
  • transparent
  • very high chemical and thermal resistance
  • Conformal Coating,
  • Encapsulation of electronic components
160-300 epoxy UV secondary heat cure
  • Dry surface after UV-curing
  • autoclavable
  • excellent chemical resistance
  • scratch resistant coating
- 70-150 acrylate UV VIS
  • Capillary flow
  • flexible and tear-proof adhesive
  • suitable for potting
  • dry surface
- 700-1,000 acrylate UV VIS secondary heat cure
  • Very high adhesion to many plastics
  • dry surface after curing
  • flexible and tear-proof
  • suitable for potting
- 40-90 acrylate UV VIS
  • Capillary flow
  • transparent
  • tack-free surface
- 2,500-4,000 acrylate UV VIS secondary heat cure
  • jetable
  • non-yellowing
  • very high adhesion to glass and metals
  • dual cure
- 600-1,000 acrylate UV
  • Non-yellowing
  • transparent
- 500-900 acrylate UV VIS
  • Elastic
  • low water absorption
  • perfect solution for bonding large surfaces
  • high resistance to moisture
- 100-300 acrylate UV VIS
  • Very high shear strength and bond strength
  • excellent adhesion to plastics
  • capillary flow behavior
- 10-100 acrylate UV VIS
  • Specially formulated for bonding PMMA
  • high adhesion
  • capillary flow
- 1,500-2,500 acrylate UV VIS
  • Excellent adhesion to many plastics
  • high bond strength
  • excellent flow properties
- 1,000-2,000 acrylate UV VIS
  • Flexible
  • high resistance to moisture
  • cures thick layers of adhesive
- 200-400 (LVT 25°C, Sp. 2/30 rpm) acrylate UV VIS
  • High peel strength
  • flexible
  • optically clear
  • for bonding large surfaces

*UV = 320 – 390 nm          VIS = 405 nm

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