Encapsulation of Plastic Components

In many applications plastic components are manufactured and then encapsulated. A range of sealing compounds, encapsulants and potting compounds are available for different applications:

Flexible acrylates have a stress-equalizing effect and protect plastic components from impact and vibration. Rigid potting compounds, on the other hand, can reinforce and also carry heavy loads. 

UV- and LED-curing acrylic-based adhesives are especially suitable here due to their short curing times, which speed up production and therefore reduce production costs. A prerequisite is that the plastics are transparent and not impermeable to UV light. For joints with undercuts or shaded zones, dual-curing adhesive systems are used. These are thermally cured following initial UV curing. Non-transparent substrates can be bonded with epoxy adhesives that cure thermally or at room temperature.

Dual-curing adhesives are also employed for particularly thick adhesive layers. Alternatively, thick layers can be cured with longer-wavelength light (about 405 nm LEDs), with which layers of several millimetres’ thickness can be cured.

uv-glue dual cure moisture curing | © Panacol

Blue uv-moisture curing adhesive is used as encapsulant for electronic components

The table below lists a selection of adhesives from Panacol that are suitable for encapsulation. Further products and custom solutions are available on request. 

To download the technical datasheets (TDS) please click on the adhesive name.

Adhesive/ encapsulant Viscosity [mPas] Base Curing* Properties Suitable for bonding these substrates:
Vitralit® 1720 2,700-3,700 epoxy UV Low shrinkage
high temperature resistance
Bonding thermoplastics
Bonding FR4 or ABS
suitable for bonding pretreated PET
Vitralit® 1722 5,000-8,000 epoxy UV Very high adhesion to most thermoplastics
low shrinkage
high temperature resistance
Bonding thermoplastics
Bonding FR4 or ABS
suitable for bonding pretreated PET
Vitralit® 4730 70-150 acrylate UV
VIS
Capillary flow
flexible and tear-proof adhesive
suitable for potting
dry surface
Bonding PC (Polycarbonate)
hard-PVC, PET, ABS, SAN
PMMA (Plexiglas®, acrylic glass)
Joining glass and plastics
Joining metals to plastics
Vitralit® 4731 900-1,500 acrylate UV
VIS
Dry surface after curing
certified to USP Class VI and ISO 10993-5 standards
Bonding PC /Makrolon, hard-PVC, PET, ABS, SAN, PMMA (Plexiglas®, acrylic glass)
Bonding glass, steel, stainless steel, aluminium, brass
Vitralit® 4735 HC 700-1,000 acrylate UV
VIS
thermal
Very high adhesion to many plastics
dry surface after curing
flexible and tear-proof
thermal post-curing
suitable for potting
Bonding PC, PMMA (Plexiglas®, acrylic glass), hard-PVC, PET, ABS, SAN
Joining glass and plastics
Joining metals to plastics
Vitralit® 5140 250-500 acrylate UV
VIS
Flexible
well suited for bonding plastics with low UV translucence and permeable to visible light
certified to USP Class VI standards
Bonding ABS, PMMA (Plexiglas®, acrylic glass), hard-PVC, PET, SAN, PC 
Joining glass and plastics
Joining metals to plastics
Joining plastics with various substrates
Vitralit® 7283 70-130 acrylate UV
VIS
Perfect solution for bonding large surfaces
very high adhesion to glass
metals and plastics
resistant against all common sterilization methods
plastics /glass bonding
suitable for elastic bonding of large surfaces
Vitralit® 7311 40-70 acrylate UV
VIS
High resistance to alcohols and moisture
non-yellowing
very high adhesion to plastics
glass and metals
suitable for bonding large areas
certified according to USP Class VI
Bonding PC (polycarbonate)
PVC,  PMMA,
ABS, glass and metals
Vitralit® 7313 40-70 acrylate UV
VIS
Flexible
high elongation at break
perfect solution for bonding large surfaces
very high adhesion to plastics
glass and metals
Bonding plastics such as 
PC,  PVC,  ABS  
Bonding glass and metals
Vitralit® 7989 3,000-5,000 acrylate UV Excellent adhesion to plastics
especially to PC and PMMA
certified to USP Class VI standards
Bonding hard-PVC, ABS, SAN, PUR, PC
Vitralit® 9179 200-400 acrylate UV Fast curing
very well suited for automated production lines
yellow color
dry surface
Bonding PC (Polycarbonate) and
other plastic substrates
Vitralit® 9180 700-1,200 acrylate UV Dry surface
fast curing of thick layers
yellow color
Bonding PC (Polycarbonate) and
other plastic substrates
Vitralit® 9181 4,000-7,000 acrylate UV Yellow color
dry surface
fast curing of thick layers
Bonding PC (Polycarbonate) and
other plastic substrates
Vitralit® UD 5134 15,000-25,000 acrylate UV
VIS
thermal
Acrylate-Hybrid
low thermal expansion
low shrinkage
impact resistant
dry surface
optional thermal post-curing of shadowed areas
grey color
Bonding PMMA (Plexiglas®, acrylic glass), PC, PET, ABS, SAN, FR4, PBT, hard-PVC
Bonding plastics and metals 
Vitralit® UV 2113 19,000-32,000 hybrid UV
VIS
Acrylate hybrid
superior strength
low thermal expansion
impact resistant
low shrinkage
resistant to soldering stress
excellent flow properties
Bonding PMMA (Plexiglas®, acrylic glass), PC, PET, ABS, SAN, FR4, PBT, hard-PVC 
Bonding plastics and metals 
Vitralit® UV 2150 140-500 acrylate UV
VIS
Modified acrylate
impact resistant
fast curing
very high adhesion to plastics
Bonding PMMA, PC, hard-PVC, ABS, SAN, PET 
Bonding plastics in combination with glass or metals
Vitralit® VBB 1 1,000-1,500 acrylate UV
VIS
Elastic
high peel strength
optically clear
very flexible
suitable for potting
Bonding PC (Polycarbonate), PMMA
Bonding plastics to glass
Vitralit® VBB-2N LV 10-100 acrylate UV
VIS
Flexible
perfect solution for bonding large surfaces
high peel strength
plastics and
rubber bonding
suitable for bonding PMMA, PC, hard-PVC, PET, ABS, SAN, FR4, PBT
in combination with glass and metals 
Structalit® 5800 7,000-15,000 2-part epoxy thermal, room temperature High temperature resistance
short pot life
fast application
Bonding thermoplastics and FR 4
Structalit® 5810 2,000-3,000 2-part epoxy thermal
room temperature
Very high adhesion to PC
resistant to moisture and chemicals
Bonding thermoplastics and FR 4

*UV = 320 - 390 nm          VIS = 405 nm