The NCAP is protected by trade secrets, know-how as well as patents compared with the PDLC which is basically a public knowledge.
While “Off State” when no electrical power is applied on the smart film the light is scattered and the film looks 'milky'. While “On State” the light is transmitted directly and the film is transparent like a regular glass.
All expressions above are referring to PDLC.
There are several sub-technologies and techniques related to manufacturing of PDLC film.
Our Smart film is based on NCAP PDLC which leads to the highest quality and reliable film.
NCAP - refers to Nematic Curvilinear Aligned Phase, known also as NCAP or Micro Emulsion EM method
PDLC - Polymer Dispersed Liquid Crystal known also as PDLC or Phase Separation method.
Yes it is.
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Almost all types of Smart film blocks more than 99% of UV and this is due to the PET ITO characteristics.
PDLC Power Consumption doesn't behave in linear way.
In general, there is a linear pattern of power consumption up to about 2 sqm, which is about 0.3A at 110v per sqm, so it will take about 6 watts per hour at 2 sqm, thereby making it about 3 w/sqm
When the size grows beyond 3 sqm, the power consumption increases in a non-linear fashion, so it may absorb more than 10 watts.
SFI Glass is an effective sound control product. Since it is triplex glass, usually 5+5 mm it is truly considered as Acoustic barrier.
SFI also offers Smart Glass ready for installation.
SFI is offering Smart Film in the following formats:
- Roll format, one roll can be any length (our standard is 20 meter)
- Cut to size with wires per customer drawing.
Our Smart Film based products are as follows:
Laminators or glass processors
- Smart Film - extra clear white, dark grey
- Smart Glass Extra Clear – very transparent super clear glass
- Self-Adhesive film to stick on existing glass
Processing Smart Film
Smart Film is laminated between 2 glasses.
Each glass can be 3,4,5,6,7 mm.
The inter-layer thickness is 1.5 mm.
Basically, it is possible to laminate Smart Films between two tempered glasses.
We do not recommend to use tempered glasses but to use float glass for the following reasons:
- De-lamination. Tempered glass isn’t very flat compared with float glass.
- Unevenness. As tempered glass isn’t flat compared with float glass, the LC white appearance (off-state) is irregular. The glass size changes bigger. This matters also expand during time.
Yes, such as Toughen, Low E, Mirrored, Fire rated, etc.
Use only Neutral Silicone Sealant. Do not use Acetic Silicone.
Just because Silicone is neutral cure it does not mean it is proper for PDLC Glass. It depends on what Silicone neutral cure is made out of. If it is alkoxy group material it is most likely to be incompatible.
For Examples, Dow Corning 799, 995, 795, 791 or 1199 Neutral Sealant is a good for PDLC Glass.
EVA is the inter-layer of choice for us due to plasticize migration with PVB.
In other words, the Polyvinyl Butyral (PVB) "attacks" the PDLC film, doesn't matter the process you use to melt it: press or vacuum.
When making lamination with Smart Films, PVB is not a good process as it damages the film, unless you seal well the smart film before the lamination. This adds much complexity to the process, hence this is why most of the customers are using EVA.
The right way to cut a film is to use a trimmer or Laser machine. If you do not have one, use a scissors.
A utility knife is not good to cut film since it cause problems in the edges that may cause a short circuit.
Single Side Electrodes is our standard style, and the maximum rate we recommend for this style is 7.
When the rate is over 7, we adopt Opposite Double Side Electrodes.
To view a scheme, click here
Actually there is no one rule, it changes from one shape to another, also dependent on the type of Smart Film, high voltage/low voltage. It is recommended to consult with SFI technical support before applying the conductive layer in order to verify that the configuration fits the size, shape and type of Smart Film.
Yes, we do have a training program.
SFI provides to its customers training on site at customer facility. Training will cover all you need to know for processing Smart Film, from unloading the roll from its package through cutting, conductive exposures, applying conductive layer, attachment of buss bars, powering and testing, laminating and more.
Absolutely, processing a Smart film requires experience and know-how as well as adequate tools and equipment for processing Smart Film, preparing it for glass lamination.
Processing Smart Film without proper training and tools is not recommended and most probably will damage the Smart Film. Please note that some of the damages may not appear immediately but over time.
For avoiding inconvenience and unnecessary costs please make sure you have the proper knowledge and tools for processing Smart film beforehand.
For more information, please contact us.
Adhesive Privacy Film
It is not allowed to stick adhesive privacy film on an exterior glass that is exposed to sun.
The heat will reduce the time life of the film. There is an exception if the glass is low-E and heat is not getting in.
It is common practice to use neutral silicone to stick the film edge to the glass. This way it avoids film peel off the glass.
Commercial and Logistic
As an estimation, we can say that each 1x1 sqm x 1mm thickness is 2.5kg.
Example: 5 sqm glass, 5+5 will weight: 5 x 10 x 2.5 = 125kg
To avoid an accident by over-current, a PTC (Positive Temperature Coefficient) thermistor is mounted in the power unit.
When the PTC thermistor is heated by the over-current, the current is limited by the thermistor. After that, if the current decreases to normal condition and temperature of thermistor drops to RT, the thermistor recovers to normal condition.
The NCAP smart films are targeted for 100/110 volt AC. There are films in the market target 60 volt AC. These are used a common PDLC technique not NCAP.
Our Transformer supports as follows:
- It is acceptable to work in any glass shape. For example, a PS that covers 2.5 sqm will work no matter if using film by 0.5 x 5 or 2.5 x 1.
- Over-current protective device (fuse) is included in each Power Supply.
- Support different size (5, 10 or 20 sqm)
- Enable using remote switch control
When sending film roll, each roll is approximately 20m length.
Example, one carton box contains 2 rolls.
A box with 2 rolls, size and weight:
L x W x H - 45 X 45 X 120cm
Gross weight 40KG
In general, each 1x1 meter of 1 mm thickness weigh 2.5 kg. For example: Smart glass 2x1 meter, 5+5 mm, weight 50 kg.
Our lead time for for smart film roll or glass is around 1-2 weeks.
- Immediate control of privacy.
- Improvement in users comfort, with greater security.
- Efficient use of space in building environments.
- Aesthetically attractive.
- Energy savings through reduced A/C cooling.
- Low operating voltage.
- UV protection.
- Excellent contrast for rear projection purposes.
- Protection from people viewing valuable items.
- Exceptional optical qualities and reliable technology.
- Lower cost of maintenance; reduction in germs and bacteria
Our privacy glass can be installed outside, like in a balcony.
In this case, our glass is sealed all sides with water edge protector silicone.
In addition, all four sides should by frame sash and the bottom side have to make holes to drain water out.
The lead-wire of our glass have to set on the top side in order to avoid water damage.
Architectural windows, interior partitions, skylights. Rear projection screens. Automotive windows and sunroofs. Point of purchase and advertising displays. Retail Store Fronts.
Automotive sun/moon roofs, skylight controls, privacy windows for conference rooms, executive offices, tradeshow exhibits and command centers, bullet-proof security glass, hospital privacy/restriction of view, bank teller windows and automated teller security windows, special effects for the entertainment industry, ultra-modern residential and commercial blind applications, outdoor advertising and rear projection.