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What is UV curing system ?. SOLTECH LTD. Advantages. Energy saving No volatile solvent Very short cure time No heat One pack system Space saving. UV (200~400nm) curing. UV. Photo-initiator P. (free radicals) Free radical + monomer + oligomer Cross linked polymer network.

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advantages
Advantages
  • Energy saving
  • No volatile solvent
  • Very short cure time
  • No heat
  • One pack system
  • Space saving
uv 200 400nm curing
UV(200~400nm) curing

UV

  • Photo-initiator P. (free radicals)
  • Free radical + monomer + oligomer
  • Cross linked polymer network
oligomer
Oligomer
  • Epoxy acrylate
  • Urethane acrylate
  • Polyester acrylate
  • Acrylic acrylate
  • Amino acrylate
epoxy acrylate 1
Epoxy acrylate (1)
  • Paper coating
  • Overprint varnish
  • Wood coating
  • Ink application (screen , offset)
  • Solder resist ink

Chemical resistance , fast cure and hardness

epoxy acrylate 2
Epoxy acrylate (2)
  • BPA epoxy acrylate (Solmer E 120,145,146,1686…)
  • Paper and wood coating
  • Acrylate of epoxydized oil (Solmer E 186…)
  • ink application
  • Modified epoxy acrylate (Solmer E 1701,1702,1703..)
  • screen ink , paper and wood
  • Novolac epoxy acrylate (Solmer E 1626,1636,1656..)
  • solder resist , hard coating
  • Acid modified Epoxy Acrylate (Solmer E 1695…)
  • PSR , metal coating
urethane acrylate 1
Urethane Acrylate (1)
  • Toughness , flexibility , adhesion and non-yellowing
  • Plastic and film coating
  • Floor tile coating
  • Screen ink
  • PVC floor and wood coating
  • Adhesive
  • Anti-fog coating
urethane acrylate 2
Urethane Acrylate (2)
  • Polyester type (Solmer U 584, 594, 580…)
  • adhesion , toughness
  • Polyether type (Solmer U 530, 564…)
  • flexibility , fast cure
  • Others (Solmer U 522, 522B, 520, 5260…)
  • fast cure , hardness
polyester acrylate
Polyester Acrylate
  • Adhesion , pigment-wetting , low viscosity
  • Offset and screen ink
  • Solmer P 236…
  • Etching resist
  • Solmer P 270,271,272…
  • Paper and Wood coating
  • Solmer P 280,281…
  • Flexo ink
  • Solmer P 280,281…
  • Laminating adhesive
  • Solmer P 220…
acrylic acrylate
Acrylic acrylate
  • Adhesion , solvent resist , non-yellowing
  • Plastic coating
  • Overprint varnish
  • Adhesive
  • Solmer A 345,364,3710
amino acrylate
Amino acrylate
  • Improve UV cure response
  • Paper and Wood coating
  • Screen ink
  • Solmer Z 115, 225
additive
Additive
  • Silicone Acrylate (Solmer Z 9135, 9136…)
  • slip and substrate wetting
  • Adhesion promoter (Solmer Z 9166, 9167)
  • PCB ink , metal and plastic coating
  • Non-silicone leveling agent (Solmer Z 9070)
  • screen ink
monomer 1
Monomer (1)
  • How to select monomer?
  • Viscosity and Solubility
  • Volatility
  • Odor and toxic property
  • Reactivity and functionality
  • Percent of shrinkage
monomer 2
Monomer (2)
  • Mono : NVP, Styrene, IBXA, PEA…
  • Di : TPGDA, HDDA, TTEGDA…
  • Tri : TMPTA, PETA
  • Others : PE4A, DPHA
monomer 3
Monomer (3)
  • A : viscosity, reactivity, hardness, gloss, chemical resistance
  • B: flexibility, solvency, adhesion
strategy for formulation
Strategy for formulation
  • 1. Select Oligomer(s) for basic film forming properties
  • 2. Use Monomer for viscosity control
  • 3. additives for performance fine tuning
  • 4. photo-initiator package is critical
general principles
General principles
  • 1.Each component plays a key role in total performance
  • Formulate for total performance
  • Optimize on performance requirements
  • Viscosity control, simple dilution no!
general principles18
General principles
  • 2. formulations are sensitive to curing process parameters and equipment
  • Use controls in experimental design to see effects of external factors
general principles19
General principles
  • 3. cost/performance is the key
  • Raw material costs
  • Volume dependency
  • Energy costs
  • Labor costs
  • Competitive pricing
oligomers
Oligomers
  • Basic film forming properties
  • Hardness abrasion resistance
  • Chemical resistance scratch resistance
  • Flexibility adhesion
  • Toughness weatherability
oligomers21
Oligomers
  • Other considerations
  • Cure speed stability
  • Cost toxicity
  • Special properties availability
monomers
Monomers
  • Viscosity reduction
  • Flexibility (monofunctional)
  • Crosslinking (multifunctional)
  • May also increase speed
additves
Additves
  • Wetting pigment
  • Flow filler
  • Slip temperature
  • resistance
  • adhesion
photo initiator
Photo-initiator
  • Cost type of system
  • Pigment/color processing variables
  • Film thickness
application
Application
  • Wood , paper & board coating
  • Plastic (PVC floor, ABS, PC,PP)
  • Adhesive (laminating, PSA)
  • Ink (screen, wet & dry offset, flexo)