What is UV curing system ? - PowerPoint PPT Presentation

What is UV curing system ?

SOLTECH LTD.

• Energy saving
• No volatile solvent
• Very short cure time
• No heat
• One pack system
• Space saving

UV

• Photo-initiator P. (free radicals)
• Free radical + monomer + oligomer
• Cross linked polymer network

• Epoxy acrylate
• Urethane acrylate
• Polyester acrylate
• Acrylic acrylate
• Amino acrylate

• Paper coating
• Overprint varnish
• Wood coating
• Ink application (screen , offset)
• Solder resist ink

Chemical resistance , fast cure and hardness

• 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

• Toughness , flexibility , adhesion and non-yellowing
• Plastic and film coating
• Floor tile coating
• Screen ink
• PVC floor and wood coating
• Adhesive
• Anti-fog coating

• 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

• 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…

• Adhesion , solvent resist , non-yellowing
• Plastic coating
• Overprint varnish
• Adhesive
• Solmer A 345,364,3710

• Improve UV cure response
• Paper and Wood coating
• Screen ink
• Solmer Z 115, 225

• 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

• How to select monomer?
• Viscosity and Solubility
• Volatility
• Odor and toxic property
• Reactivity and functionality
• Percent of shrinkage

• Mono : NVP, Styrene, IBXA, PEA…
• Di : TPGDA, HDDA, TTEGDA…
• Tri : TMPTA, PETA
• Others : PE4A, DPHA

• A : viscosity, reactivity, hardness, gloss, chemical resistance
• B: flexibility, solvency, adhesion

• 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

• 1.Each component plays a key role in total performance
• Formulate for total performance
• Optimize on performance requirements
• Viscosity control, simple dilution no!

• 2. formulations are sensitive to curing process parameters and equipment
• Use controls in experimental design to see effects of external factors

• 3. cost/performance is the key
• Raw material costs
• Volume dependency
• Energy costs
• Labor costs
• Competitive pricing

• Basic film forming properties
• Hardness abrasion resistance
• Chemical resistance scratch resistance
• Flexibility adhesion
• Toughness weatherability

• Other considerations
• Cure speed stability
• Cost toxicity
• Special properties availability

• Viscosity reduction
• Flexibility (monofunctional)
• Crosslinking (multifunctional)
• May also increase speed

• Wetting pigment
• Flow filler
• Slip temperature
• resistance
• adhesion

• Cost type of system
• Pigment/color processing variables
• Film thickness

• Wood , paper & board coating
• Plastic (PVC floor, ABS, PC,PP)
• Adhesive (laminating, PSA)
• Ink (screen, wet & dry offset, flexo)