Upass Material Technology (Shanghai) Co.,Ltd.
Focus on polymer films.
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| STF (Switchable Transparent Film) is also known as PDLC (Polymer Dispersed Liquid Crystal) film, electronic dimming film, electronic curtain, etc. It is based on film technology. The rod-shaped polymer liquid crystalls mixing with prepolymer stick to transparent conductive base material, so that it simultaneously possesses charateristics of liquild and crystal. When powering off, polymer comes to the atomization of disorder. With polymer powering on, it is orderly arranged along with the direction of the electric field, which enables the film to have transmittance of the light. By controling the electric switch, It can be converted between transparent and opaque state. |
| The picture shows the principle diagram of the STF |
| The swichable liquid crystal transparent film is also called an electronically controlled smart PDLC flm |
| lt consists of two layers of flexible transparent conductive films (ITO film and PDLC) |
By controlng the electic field, It is switchable between the transparent and opaque
(atomized) state.
Main Fields:
As a new material field, functional films are also one of the top ten key fields of Made in China 2025,
and the awareness in the market is increasing. Nowadays, functional films are not only used in the
construction field, special packaging, tape, label, automobile, electronics and other industries,
but also in the fields of film filtration, air permeable film, graphene heating film, insulation film,
Anti-UV film, biodegradable materials etc..
UPASS, as a leading domestic deep cultivator of polymer functional films, has also entered a stage
of rapid development. We believe that UPASS will enter more application fields of polymer films in
near future.
Parameters:
| Item | Performance / Unit | Testing Method and Standard | |
| Rated Voltage | ON | 36/48/60(AC50HZ) | Multimeter |
| Power Consumption | ON | 4-6w/(SQM) | Multi-parameter Electrical Measuring Instruments |
| Total Light Transmittance | ON | ＞83% | GB/T 2410-2008GB/Spectrophotometer |
| OFF | ＞67% | ||
| Directional Light Transmittance | ON | ＞80% | GB5137.2-2002 |
| OFF | ＜4% | ||
| Haze | ON | ＜4% | GB/T 2410-2008GB/Spectrophotomete |
| OFF | ＞96% | ||
| Response Time | ON | ＜40(MS) | Liquid Cystal Mutl-prareter. Measuring Instrument |
| OFF | ＜210(MS) | ||
| Operating Temperature | / | -30~70℃ | Constant Temperature and Humidly Testing Machine |
| Lifetime | ON | ＞100000(H) | GB18910.5- 2008 |
About Upass:
| Upass, founded in 2008, is headquartered in New Materials Industrial Park, Qingpu District, Shanghai, and has two production bases in Taicang, Jiangsu and Chenzhou, Hunan. Now as a governing unit of China Building Waterproof Association, a vice chairman unit of Professional Committee of China Modified Plastic Association, an enterprise with Triple A credibility in China Plastic Association, not only assists the development of the relevant industries, but also upholds the conception of sustainable development by successive technological innovation. Upass so far has acquired over 100 of intellectual property rights. |
| UPASS will spare no effort in strengthening and improving the production, sales networks, service system to return the trust and support of customers, and look forward to working with you in a win-win future. |
Company History: