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Hardcoat Resin Cover Glass Replacement

Exceptional scratch resistance and durability without compromising optical clarity

Diamond Guard provides glass-like performance and optical clarity in a thin, flexible, and shatterproof format. Now you can create durable consumer and industrial products in almost any size or shape, and that are lighter and less expensive to manufacture than was possible with traditional hard coat solutions.

Diamond Guard is an ideal alternative to glass or plastic cover lenses. See how you can make your device thinner, lighter, and less expensive to manufacture, while improving durability. Diamond Guard replaces expensive film on the backside of the touch panel module, can replace cover glass on top of a touch sensor, or can be used in add-on protective shield products for mobile phones and other devices.

Glass vs. Diamond Guard
Glass Diamond Guard
Shatterproof No Yes
Scratch Resistance Very Good Good
Weight Heavy Light
Minimum Effective Thickness 0.4mm 0.12mm
Materials Cost High Low
Handling Cost High Low
Yield Low High
Shapes Limited Almost Any Shape
Film Roll Limited High Volume

Diamond Guard is a liquid resin that is suitable for spray, slot die, inkjet, and gravure coating.

Diamond Guard Advantages

  • Hard coat protection for glass and polymer film and sheets provides chemically strengthened glass-like performance at lower cost.
  • Depending on the underlying substrate, up to 9H available scratch resistance improves product service life while maintaining product aesthetics.
  • Diamond Guard resin is available by the barrel to meet immediate supply chain requirements.

Diamond Guard Specifications

Optically Clear
  • >90.5% Transmission (free-standing film)
  • <0.6% Haze (PET haze – 0.6%)
Glass-Like Surface
  • Rq = 13.9 nm
Hard Wear-Resistant Surface
  • ASTM 6H
  • Taber – CS-10 wheel – 500 cycles – 500g – Haze – no change
  • Wyzenbeek – Denim – 1000 cycles – 500g – Haze – no change
  • Bayer – Luminous Transmission – post Bayer – no change
Product Application Options
  • Slot Die Coat, Spray Coat, Inkjet Coat, Curtain Coat, Gravure Coat
Demonstrated Surface Hardness Improvement Diamond Guard creates a thin coating over the target base material that increases its surface performance up to eight hardness levels.

Cover Glass Replacement

The disadvantages of heavy, easily damaged glass in consumer electronic products has highlighted an industry demand for thinner, lighter, more durable, and less expensive alternatives. Unfortunately, typical hard coat resin technologies can’t offer the scratch resistance, clarity, or flexibility to be considered as a replacement for glass in the cover lens assembly.

Until now.

Diamond Guard resin offers:
    Improved product durability and scratch resistance that maintains product appearance and usability
  • Reduced weight that meets customer demands, reduces shipping costs, and improves ease of use for handheld devices
  • Support and protection for emerging flexible display designs
  • Glass-like display performance without sacrificing high definition and optical clarity
Diamond Guard is ideal for use as cover glass, case parts, fingerprint sensors, and touch-activated capacitive or membrane switches and has multiple manufacturing options:
    Diamond Guard coated film laminated to lens assembly
  • Diamond Guard resin directly coated to lens substrate
  • Diamond Guard coated film laminated to LCD panel
  • Diamond Guard coated films used to build entire cover lens assemblies

Product Protection & Decoration

Diamond Guard coatings extend the service life and preserve the aesthetics of consumer, industrial, medical, and automotive products while allowing new, innovative design elements. Diamond Guard offers improved protection for membrane and capacitive switches as well as molded decorative surfaces including in-mold lamination (IML), white goods, and automotive trim.

Diamond Guard coated films are easily printable on the non-coated side for cover glass border patterns or decorative surface features that are protected by the hard coat and film layers. Die-cut film parts can be directly inserted for in-mold lamination to softer plastic parts, which adds a scratch-resistant and decorative outer shell layer to the molded part.