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Optical Films
Optical Films
STANDARD OPTICAL FILMS
Dontech and its DyneTEC subsidiary have a range of standard high-performance coatings that we apply to optical grades of polyethylene terephthalate (PET) substrates and sell in rolls, sheets, and custom die-cut or laser-cut pieces. These products are used by our customers to shield electromagnetic noise in optical apertures, create the electrically active optical area for touchscreens, build transparent heaters, control first surface reflections on displays, improve the durability of displays, touchscreens, and keypads, control the transfer of bacteria and viruses from high touch optical apertures, and to passively help keep heat from passing through optical apertures.
CUSTOM THIN FILM COATED FILMS
Dontech will design and run single and multilayer custom thin film coatings on sheets and rolls of flexible substrates. At our DyneTEC subsidiary, acrylic, glass, PET, polycarbonate, cellulose triacetate (TAC), and other flexible substrates are coated in various width formats on roll-to-roll (R2R) and batch coating systems to improve optical, electrical, and environmental properties. Coatings can be applied over thick film hard coatings. Our state-of-the-art in-house thin film R2R and batch coating systems include AC and DC magnetron sputtering, ion-enhanced E-beam evaporation, and chemical vapor deposition (CVD) systems. Custom coatings are subject to setup charges and minimum runs.
Product Portfolio
VCF™ & OCF™ Series Transparent Conductive Films
Transparent conductive coatings on PET for EMI/RFI shielding, transparent heating and active optical touchscreen components. Available in rolls, sheets and converted parts.
VARGard™ Reflection Reducing Films
Antireflective (AR) and AR/AG (antiglare) coatings on hardcoated PET with an optical PSA on the rear for first surface reflection control. Available in rolls, sheets and converted parts.
AMF™ Antimicrobial Films
Antimicrobial antiglare hardcoatings on PET films with an optical PSA on the rear for the control the transfer of bacteria and viruses from high touch optical apertures. Available in rolls, sheets and converted parts.
Heat Shield™ Solar & IR Reflecting Films
IR reflecting (solar mirror) and visually transmitting thin film coated PET films with and optical PSA for passive thermal management of windows and displays. Available in rolls, sheets and converted parts.
MATTEGard™ Hard Coated Plastic Films
Abrasion and chemical resistant thick film, w/ & w/o antiglare, hardcoatings on PET with an optical PSA on the rear for the improving durability of displays, touchscreens and membrane keypads. Available in rolls, sheets and converted parts.
Custom Thin Film Coatings on Flexible Substrates
Custom single and multilayer high energy thin film coatings, including metals, conductive transparent oxides, and dielectrics, on sheets and rolls of flexible substrates. Available in rolls, sheets and converted parts.
Coating Processes
Thick Film Coating Equipment
MATTEGard™ and AMF™ Antimicrobial chemical and abrasion resistant thick film hardcoatings. They are a roll coated products with UV cured wet chemistries. We apply these coatings to first surface of rolls of optical grades of PET film. In Dontech cleanrooms we apply an optical PSA to the rear surfaces of these films, so that our customers can laminate the films to their optical products.
Hard coatings improve environmental durability, chemical, scratch and abrasion resistance and in the case of the AMF™ formulation it also has antimicrobial properties. Both products are available with diffusion antireflective or antiglare (AG) properties which control surface reflections by scattering or diffusing the specular or mirror reflections from the plastic film. MattGard™ is also available without AG properties as a smooth or polished hard surface.
Thin Film Coating Equipment
Dontech and its DyneTEC subsidiary have a broad range of thin film coating equipment that can process sheets and rolls of flexible films. We have R2R and batch coating systems including AC and DC magnetron sputtering, ion-enhanced E-beam evaporation, and chemical vapor deposition (CVD). Dontech has extended optical CAD and metrology capabilities, allowing us to perform rapid product development to control our production quality, and to verify the performance of our products. Our equipment can coat an extremely broad range of substrates, including acrylic, glass, PET, polycarbonate, cellulose triacetate (TAC), and other flexible substrates. We can enhance material in narrow and wide format R2R and in batch coating systems, to improve optical, electrical, and environmental properties. Coatings can be applied over thick film hard coatings or directly to the substrates.
Film Conversion Capabilities
Film Conversion Capabilities
Films can be supplied in roll format or can be converted into sheets or final parts. Dontech can slit roll materials down to custom widths. Common roll widths include: 10″, 12″, 20.5″, 24″ and 36″. Standard sheet sizes range from 8″ x 10″ sized hand sheets to 18″ x 24″. More complex shapes can be converted with laser or die cutting. Protective maskings can be applied to one or both surfaces. Optical and non-optical pressure sensitive adhesive (PSA) with a release liner can be applied to either surface of the film to allow for easy installation to the next higher assembly (e.g., nameplate or electronic display).
DONTECH & Optical Films
Dontech has extensive engineering and technical support resources that can assist you with your flexible substrate design needs. Our technical staff have diverse backgrounds relevant to high-performance display and precision optics markets. For many of our top customers, we function as an extension of their engineering departments, supporting projects from concept to final system delivery.