Polygrama Film
Posted: Thu Dec 04, 2008 1:30 am
POLYGRAMA
Polygrama updated the film model photopolymer for security items, green sensitivity is available with back adhesive or (PET Sandwish) with print acceptable coating on both sides, samples are bar coated but long rolls can be outsource service coated with emulsion in US and UK. Below are some images and useful information. Samples are available of both liquid and dry photopolymers with CC or PayPal® payment via http://www.xoom.com .
Regards,
Sergio Oliveira - Polygrama
sergio at polygrama dot com
Sample information, Croma Green
Sample size: Sheet, 30cm x 10 cm width
Sample setup: 75µm Polyester base with 2µm Optical Adhesive and 20µm Polyester siliconized cover (Remove to laminate film)
30µm Polygrama Photopolymer (PPP)
20µm Polyester cover.
After holographic exposure post - cure with UV light (365nm)!
Optical data of PPP + Base
Sensitizers type: Green, tested at 532nm
Haze (Polymer): <0.1%
Transmission at λ = 512-532 nm: 50% minimum
Transmission at λ = 633 nm: 91%
Holographic data
Dosage for exposure: 20mJ/cm²
Diffraction efficiency: >95% (green)
Δn (Kogelnik): 0.012
Fig. 1- Absorbance curve. Type “B” Polymer.
Photos:
Transmission Hologram/TR hologram laminated on Glass and Polymer Film
Reflection "Denisyuk" Hologram - Film laminated onto Glass/Interferometric images on liquid polymer
Polygrama updated the film model photopolymer for security items, green sensitivity is available with back adhesive or (PET Sandwish) with print acceptable coating on both sides, samples are bar coated but long rolls can be outsource service coated with emulsion in US and UK. Below are some images and useful information. Samples are available of both liquid and dry photopolymers with CC or PayPal® payment via http://www.xoom.com .
Regards,
Sergio Oliveira - Polygrama
sergio at polygrama dot com
Sample information, Croma Green
Sample size: Sheet, 30cm x 10 cm width
Sample setup: 75µm Polyester base with 2µm Optical Adhesive and 20µm Polyester siliconized cover (Remove to laminate film)
30µm Polygrama Photopolymer (PPP)
20µm Polyester cover.
After holographic exposure post - cure with UV light (365nm)!
Optical data of PPP + Base
Sensitizers type: Green, tested at 532nm
Haze (Polymer): <0.1%
Transmission at λ = 512-532 nm: 50% minimum
Transmission at λ = 633 nm: 91%
Holographic data
Dosage for exposure: 20mJ/cm²
Diffraction efficiency: >95% (green)
Δn (Kogelnik): 0.012
Fig. 1- Absorbance curve. Type “B” Polymer.
Photos:
Transmission Hologram/TR hologram laminated on Glass and Polymer Film
Reflection "Denisyuk" Hologram - Film laminated onto Glass/Interferometric images on liquid polymer