Introduction to the PPG High End Optical Material Family · 2017. 3. 21. · PPG Industries 2....
Transcript of Introduction to the PPG High End Optical Material Family · 2017. 3. 21. · PPG Industries 2....
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Product Presentation
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• Founded in 1883
• More than 140 manufacturing facilities in more than 60 countries
• 40000 employees
• $12 billion in revenues in 2009
• Composed of 13 strategic business units
• Industrial Coating, Performance Coatings, Architectural Coatings,
Optical & Specialty Material, Commodity Materials and Glass
• Noteworthy achievements:
– Pioneered cationic electro-deposition automotive primers that have
virtually eliminated rust.
PPG Industries
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Technical developments were driven with the following
recurrent parameters:
• Materials imported from other activities (most often from
military activity) and customized to the industry
• By essence, there are always trade-offs in material
performance
• Long and expensive material development cycle for every
stakeholder within the value chain
• Very long material life cycles
• Decreasing number of material suppliers
Environment for material development
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The Evolution of Lens Materials
and Patient Benefits
CR-39® material- First commercially
successful organic
(plastic) lens
material
- Optical
performance
consistent with
glass lenses
Significant
improvement in
weight and
strength/impact
resistance
1960’s-1970’s 1980’s
Polycarbonate Improvement in
strength/impact
resistance
Improvement in
thinness and
weight
Significant
decline in optical
performance
1990’s
High Index Improvement
in thinness
- Acceptable
optical
performance
Decline in
weight and
strength/
impact
resistance
Glass
1800’s
Trivex® material Significant improvement in
strength, durability and impact
resistance
High optical performance
Lightest commercial Rx
material
Best balance of performance
properties for low-to-moderate
Rx’s – clear, light, strong
Higher Index- Solely focused on increasing
index of lens
Decline in optical performance,
weight and strength with each
higher index product
2000’s
Development of Added Values: HC, AR, Photochromics, Polarized
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Thermoplastics
(Polycarbonate)
Thermosets
(CR -39® material)
“Quasi -Thermoset”
(Trivex® material)
Long chains – impact resistanceCrossed molecules – resistance to heat
Material morphology
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A B2 COMPONENTSTrivex material is a 2 component system.
Trivex® material casting process
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BMIXINGA specially designed machine mixes the components at a precise ratio and temperature. A
Trivex® material casting process
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MOLD FILLINGThe material is then injected into a glass mold.
Trivex® material casting process
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HEAT CURINGThe molds are thermally cured in an oven for approximately 7-10 hours using a specified heat cycle ranging from 85°C to 130°C.
859095100105110115120125130
Trivex® material casting process
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DE-MOLDINGThe lenses are removed from the molds and pass through an inspection process.
Trivex® material casting process
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Press for production of injection moulded lenses
Uncoated polycarbonateFinished lenses are highly stressed and it is more difficult to obtain clean holes, free from stress, when drilling these materials.
Polycarbonate injection process
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Trivex® material is made with polyurethane enriched with additional nitrogen
Result
• Impact resistance material
• Light material
• Optical clarity
High index lenses are made with polyurethane enriched with Sulphur
( the higher the index, the more sulphur)
Result
• Thinner lens from +/-3diopters
• Higher density Lower optical clarity More Brittle
Material chemistry
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• No lens is the result of only one of its properties
Lens attributes work in combination.
Lens material attributes
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Lens material attributesLightness
• Lens weight is a function the material’s specific gravity. In this case, Trivex® material
was engineered to be the lightest material (1.11g/cm3).
Poly
High index
Trivex® material
Std. Plastic(CR-39® material)
Polycarbonate High Index
Specific Gravity 1.11 g/cm3 1.32 g/cm3 1.22 g/cm3 1.30-1.40 g/cm3
Lightness
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• A lens’ clarity is a product of Abbe number.
CR 39
PolycarbonateTrivex
Trivex®material
Std. Plastic(CR-39® material)
Polycarbonate High Index
Optical QualityAbbe Value
43 - 45 58 29 - 31 32-41
Lens material attributesOptical Clarity
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Lens material attributesUV Protection
• Lenses sold in eyewear should always provide 100 % UV
protection.
Trivex
Trivex®material
Std. Plastic(CR-39® material)
Polycarbonate High Index
UV protection 100% UV cut 98% UV cut 100% UV cut 100% UV cut
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Lens material attributes Material resistance
Lenses made with Trivex® material and polycarbonate stand a chance to pass:
– FDA at 1.0 mm center thickness
– CEN at 1.0 mm center thickness
– ANSI Z87.1
PolyHigh Index CR 39
Trivex® material
Std. Plastic(CR-39® material)
Polycarbonate High Index
Impact resistance
Pass Fail Pass Some pass
Chemical Resistance
Good Good Poor Fair
Stress cracking Not sensitive Brittle Sensitive Sensitive
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Trivex® material*
Std. Plastic(CR-39® material)
Polycarbonate High Index
UV Protection
Durability (tensile strength)
Chemical Resistance
Impact Resistance
Optical clarity
Lightness
Thinness
PoorFairExcellent
Consumer benefits
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Children
superior optics, UV protection, impact resistance
Ageing people
lightweight, clarity, UV protection
Active people
impact resistance, great optics, lightweight
Rimless frames wearers
lenses will not fracture when glazed into these
mounts
Which customer segment should
wear Trivex®?
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Lens material positioning
DIOPTERS 0.00 +/-3.00 +/-7.00 +/-12.00
HIGH END
BASE /
ENTRYADC / CR-39®
Global
Trivex®
Global
1.56 Mid-Index
Pacific
Polycarbonate US
1.60 High-Index
Europe
&Pacific 1.67 High-Index
Global
1.74 High-Index
Global
• Decreasing prices causing downward pressure on existing ‘high end’
material offerings
• Newest materials (1.74) only provide significant benefits to small
portion of patients with extreme prescriptions
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Trivex® material is a high quality material – offer Trivex® material to your
customers with high quality designs, coatings and additional options
Material Designs Coatings Additional Options
Also compatible with digital surfacing and composite lens technologies
Scratch resistant
Anti-reflective
Polarized
Transitions® photochromic lenses
Tinted
Single Vision
Progressive
Multi-focal
Diversity of Trivex® material
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PPG developed marketing tools to
help ECP grow their Trivex® sales
• Brochures to ECP’s and consumer
• E-learning tool www.ppgtrivex.com/education
• Presentations
• POS pictures/images Data bank
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