Photoluminescent safety signs screen printing process
2024-09-12 23:00:41
Abstract: China's rare earth mineral resources account for more than 80% of the world's total. China’s chief designer Deng Xiaoping once said: “The Middle East has oil, and China has rare earths.†Rare earth mines are China's strategic resources. Therefore, nano rare earth materials are the future direction of our business.
The photoluminescent safety sign is a high-tech project with low investment, quick results and high added value. To date, many people still do not understand and understand the product. There is still a large space in the country with a vast market, and its social and economic benefits are immeasurable.
Keywords: nano rare earth luminescent powder screen printing
I. Use of rare earth
China's rare earth resources account for more than 80% of the world's reserves, and it is the most abundant country. Not only has reserves ranked first in the world, but it has also become the world's largest producer, exporter, and utility company of rare earths. In order to effectively use and develop China's rare earth resources, China University of Geosciences successfully developed ultra-long afterglow nano-rare earth luminescent powder as early as a few years ago, filling the domestic gap.
The product has a strong light absorption, storage, light-emitting function, can be made or fire safety channel self-luminous signs, light-emitting motorcycle safety helmets, luminous billboards, highway luminous signs, automotive reflective license plates, luminous paintings and other products. And is widely used in various fields such as the Ministry of Public Security, fire protection, electric power, transportation, construction, decoration, railways, ships, aviation, post and telecommunications, communications, airports, mines, hospitals, tourism, civil defense engineering, arts and crafts, military facilities, electronic appliances, etc. It is a high-tech project with low investment, quick results and high added value. The product not only has a large domestic demand, but also has a broader international market (exports can be earned foreign exchange). The product features energy saving, environmental protection, safety, and a wide range of applications.
1. Absorbing time is short, light emitting time is long, and the brightness is high: The light emitting material is absolutely different from reflective material or point light emitting material, it can be irradiated in natural light, sunlight, and light for about 10-30 minutes, and can be continuously illuminated at night or in dark places. It also releases high-brightness afterglow in various colors, and the duration of afterglow is more than 10 hours.
2, good physical and chemical stability, long service life: The material can be long-term exposure to sunlight, in high temperature (+500 °C) and low temperature (-60 °C) and other harsh environments or strong ultraviolet light is not black, not bad, Maintain a good light state, the service life of up to 10 years.
3, safe, reliable, energy saving and environmental protection: The material by the authoritative inspection does not contain any radioactive material, non-toxic, harmless, no waste pollution during production and use, make full use of natural light sources can absorb light, light, without power or other artificial energy, Is a green energy-saving products.
4, color varieties complete: the existing yellow, yellow-green, blue, blue-green, purple, red and other luminous colors.
5. Wide range of applications: Luminous paints, fluorescent inks, luminous printing pastes, luminous plastics, luminous rubbers, luminous leather goods, luminous ceramics, luminous enamels, luminous fibers, luminous glass, luminous films, luminous characters, luminous resins Products, luminous jade and other products.
Second, the market demand
With the development of economy, the people’s lives have moved towards a well-to-do level, and the number of middle- and high-rise buildings has increased. The state attaches more and more importance to fire safety. The functions of the government’s fire department have been continuously strengthened. “How to reduce casualties†is listed as a firefighting job. One of the key points.
When a fire accident occurs, power is generally cut off, and the building is in a dark state. Evacuation of personnel is a matter of life and death. Therefore, the fire evacuation identification mark in the dark is listed as a mandatory use of fire, and it is a “9/11 US incident†that shocks the world. It is because of the use of such products that many people have escaped, greatly reducing the number of casualties.
The application of fire sign boards is very extensive. For example, buildings, hotels, stadiums, airports, underground passages, hospitals and other places all need such fire sign boards. Currently, the application of luminous sign boards has a lot of space in China, and many people still do not. Understand and understand this product, therefore, the development of photoluminescent safety signs has a very broad prospect, and its social and economic benefits are incalculable.
Third, product design
Using the principle of light emission of rare earth luminescent materials: using visible light to activate Eu3+, Dy3+ and other elements in the rare earth luminescent material, storing light in the dark can emit yellow-green light with a wavelength of 450-600 nm. And according to the use of the location, the environment and the customer's different requirements, the use of PYC hard low foam PVC sheet or flame retardant ABS materials fire sign. How it works: In the daytime or in the light, the luminous absorption can reach saturation in 10-30 minutes, and when in the darkness, it can last for more than 10 hours. The working process is: Absorbing -> Luminous -> Absorbing -> Luminous, can countless cycles go on. Rare earth luminescent powder is light yellow, so choose to make signs PVC flame retardant must be blue or green.
The graphic and geometrical dimensions of the photoluminescent safety signs are all required by national standards. The specifications are described below and are for reference only.
1. Photoluminescent safety sign
The function of photoluminescent fire evacuation products: the emergency evacuation instructions for the personnel to escape, guide the personnel to quickly leave the danger zone, reach the safe zone, and avoid the occurrence of casualties.
Size (mm) Material 120×330 3mm PVC board 140×390 3mm PVC board 190×530 3mm PVC board 125×335 Aluminum alloy or plastic frame 145×395 Aluminum alloy or plastic frame 195×535 Aluminum alloy or plastic frame 2. Photoluminescent indication Bar
Using 3mm PVC plates, each 1.2m long and 8cm wide. 3. Photoluminescent firefighting equipment signifies the function of azimuth signs of fire-fighting facilities: guiding people to find fire-fighting equipment quickly in the dark, shortening disaster relief time, reducing accident losses, and giving full play to firefighting equipment. The effect.
In the red PVC flame-retardant sheet, screen printing yellow luminous ink graphics, specifications 8 x 8cm, 12 x 12cm, 12 x 18cm, 18 x 18cm and other products.
4, photoluminescent safety warning signs Photoluminescent fire safety warning signs function: day or dark remind people to pay attention to fire safety, to avoid the occurrence of fire accidents.
Warning sign Figure 4 Warning sign Figure 5 Instruction sign Figure 6 5. Photoluminescent building guide sign 6, Figure 7 Product name size (mm) Material unit card 200×435 3mm PVC board Floor card 200×200 3mm PVC board Advertising floor card 200× 600 3mmPVC board
Fourth, luminous ink preparation
Cyclohexanone solvent (industrial) 50%
Polyvinyl chloride resin (powder or granules) 20%
Rare earth luminescent powder (ultra-high brightness) 33%
Rare Earth Luminescent Powder Product Specifications Product Name Price (Yuan/kg)
High brightness 200 mesh 680
High brightness 200 mesh 450
Medium Brightness 200 mesh 270
Low brightness light powder 160
Producing high-quality "photoluminescent safety signs" products, in line with the attitude of being responsible for the safety of the people, must be selected as the best quality ultra-bright rare-earth luminous powder. Do not use fluorescent powder instead of your own brand.
Fifth, plate making materials
Diazo photosensitive adhesive (solvent-resistant type)
Polyester screen cloth (120-200 mesh)
Six, printing process
1, PVC sheet cut with a paper cutter, not only saves time, but also fast and good, neat corners, no burrs, and no scars on the board.
2. Before printing screen printing inks, it is necessary to print a plastic ink white and then screen printing ink. Because white has a reflective effect, the brightness is 100.
3, found in the printing plastic ink dry and easy to seal, affect the quality of printing, should be coupled with slow-drying agent to use.
4, whether it is printing white plastic ink or light ink, from the distance to the bosom squeezing, when the ink back from the arms to the distance, the squeegee direction should be the same, covered ink consistency.
5. How much ink is squeegeed on the PVC board depends on the dynamic pressure of the squeegee. Scraper hardness 70 ° -75 °, the vertical corners to be smooth, the length of the scraper should be 2cm-3cm on both sides of the screen. Squeegee angle pressure and speed should be mastered by themselves, and necessary adjustments should be made in time.
6, when printing finished products to install aluminum alloy frame or plastic frame, the edges of the frame should be polished smooth, so as to avoid rough, cut the sense of the hand, should pay attention to clamping the frame angle, can not be loose, after the installation is complete, must be immediately Bagging, to avoid damage to the surface of the signboard, packing and storage of qualified products.
Source: PACK.CN
The photoluminescent safety sign is a high-tech project with low investment, quick results and high added value. To date, many people still do not understand and understand the product. There is still a large space in the country with a vast market, and its social and economic benefits are immeasurable.
Keywords: nano rare earth luminescent powder screen printing
I. Use of rare earth
China's rare earth resources account for more than 80% of the world's reserves, and it is the most abundant country. Not only has reserves ranked first in the world, but it has also become the world's largest producer, exporter, and utility company of rare earths. In order to effectively use and develop China's rare earth resources, China University of Geosciences successfully developed ultra-long afterglow nano-rare earth luminescent powder as early as a few years ago, filling the domestic gap.
The product has a strong light absorption, storage, light-emitting function, can be made or fire safety channel self-luminous signs, light-emitting motorcycle safety helmets, luminous billboards, highway luminous signs, automotive reflective license plates, luminous paintings and other products. And is widely used in various fields such as the Ministry of Public Security, fire protection, electric power, transportation, construction, decoration, railways, ships, aviation, post and telecommunications, communications, airports, mines, hospitals, tourism, civil defense engineering, arts and crafts, military facilities, electronic appliances, etc. It is a high-tech project with low investment, quick results and high added value. The product not only has a large domestic demand, but also has a broader international market (exports can be earned foreign exchange). The product features energy saving, environmental protection, safety, and a wide range of applications.
1. Absorbing time is short, light emitting time is long, and the brightness is high: The light emitting material is absolutely different from reflective material or point light emitting material, it can be irradiated in natural light, sunlight, and light for about 10-30 minutes, and can be continuously illuminated at night or in dark places. It also releases high-brightness afterglow in various colors, and the duration of afterglow is more than 10 hours.
2, good physical and chemical stability, long service life: The material can be long-term exposure to sunlight, in high temperature (+500 °C) and low temperature (-60 °C) and other harsh environments or strong ultraviolet light is not black, not bad, Maintain a good light state, the service life of up to 10 years.
3, safe, reliable, energy saving and environmental protection: The material by the authoritative inspection does not contain any radioactive material, non-toxic, harmless, no waste pollution during production and use, make full use of natural light sources can absorb light, light, without power or other artificial energy, Is a green energy-saving products.
4, color varieties complete: the existing yellow, yellow-green, blue, blue-green, purple, red and other luminous colors.
5. Wide range of applications: Luminous paints, fluorescent inks, luminous printing pastes, luminous plastics, luminous rubbers, luminous leather goods, luminous ceramics, luminous enamels, luminous fibers, luminous glass, luminous films, luminous characters, luminous resins Products, luminous jade and other products.
Second, the market demand
With the development of economy, the people’s lives have moved towards a well-to-do level, and the number of middle- and high-rise buildings has increased. The state attaches more and more importance to fire safety. The functions of the government’s fire department have been continuously strengthened. “How to reduce casualties†is listed as a firefighting job. One of the key points.
When a fire accident occurs, power is generally cut off, and the building is in a dark state. Evacuation of personnel is a matter of life and death. Therefore, the fire evacuation identification mark in the dark is listed as a mandatory use of fire, and it is a “9/11 US incident†that shocks the world. It is because of the use of such products that many people have escaped, greatly reducing the number of casualties.
The application of fire sign boards is very extensive. For example, buildings, hotels, stadiums, airports, underground passages, hospitals and other places all need such fire sign boards. Currently, the application of luminous sign boards has a lot of space in China, and many people still do not. Understand and understand this product, therefore, the development of photoluminescent safety signs has a very broad prospect, and its social and economic benefits are incalculable.
Third, product design
Using the principle of light emission of rare earth luminescent materials: using visible light to activate Eu3+, Dy3+ and other elements in the rare earth luminescent material, storing light in the dark can emit yellow-green light with a wavelength of 450-600 nm. And according to the use of the location, the environment and the customer's different requirements, the use of PYC hard low foam PVC sheet or flame retardant ABS materials fire sign. How it works: In the daytime or in the light, the luminous absorption can reach saturation in 10-30 minutes, and when in the darkness, it can last for more than 10 hours. The working process is: Absorbing -> Luminous -> Absorbing -> Luminous, can countless cycles go on. Rare earth luminescent powder is light yellow, so choose to make signs PVC flame retardant must be blue or green.
The graphic and geometrical dimensions of the photoluminescent safety signs are all required by national standards. The specifications are described below and are for reference only.
1. Photoluminescent safety sign
The function of photoluminescent fire evacuation products: the emergency evacuation instructions for the personnel to escape, guide the personnel to quickly leave the danger zone, reach the safe zone, and avoid the occurrence of casualties.
Size (mm) Material 120×330 3mm PVC board 140×390 3mm PVC board 190×530 3mm PVC board 125×335 Aluminum alloy or plastic frame 145×395 Aluminum alloy or plastic frame 195×535 Aluminum alloy or plastic frame 2. Photoluminescent indication Bar
Using 3mm PVC plates, each 1.2m long and 8cm wide. 3. Photoluminescent firefighting equipment signifies the function of azimuth signs of fire-fighting facilities: guiding people to find fire-fighting equipment quickly in the dark, shortening disaster relief time, reducing accident losses, and giving full play to firefighting equipment. The effect.
In the red PVC flame-retardant sheet, screen printing yellow luminous ink graphics, specifications 8 x 8cm, 12 x 12cm, 12 x 18cm, 18 x 18cm and other products.
4, photoluminescent safety warning signs Photoluminescent fire safety warning signs function: day or dark remind people to pay attention to fire safety, to avoid the occurrence of fire accidents.
Warning sign Figure 4 Warning sign Figure 5 Instruction sign Figure 6 5. Photoluminescent building guide sign 6, Figure 7 Product name size (mm) Material unit card 200×435 3mm PVC board Floor card 200×200 3mm PVC board Advertising floor card 200× 600 3mmPVC board
Fourth, luminous ink preparation
Cyclohexanone solvent (industrial) 50%
Polyvinyl chloride resin (powder or granules) 20%
Rare earth luminescent powder (ultra-high brightness) 33%
Rare Earth Luminescent Powder Product Specifications Product Name Price (Yuan/kg)
High brightness 200 mesh 680
High brightness 200 mesh 450
Medium Brightness 200 mesh 270
Low brightness light powder 160
Producing high-quality "photoluminescent safety signs" products, in line with the attitude of being responsible for the safety of the people, must be selected as the best quality ultra-bright rare-earth luminous powder. Do not use fluorescent powder instead of your own brand.
Fifth, plate making materials
Diazo photosensitive adhesive (solvent-resistant type)
Polyester screen cloth (120-200 mesh)
Six, printing process
1, PVC sheet cut with a paper cutter, not only saves time, but also fast and good, neat corners, no burrs, and no scars on the board.
2. Before printing screen printing inks, it is necessary to print a plastic ink white and then screen printing ink. Because white has a reflective effect, the brightness is 100.
3, found in the printing plastic ink dry and easy to seal, affect the quality of printing, should be coupled with slow-drying agent to use.
4, whether it is printing white plastic ink or light ink, from the distance to the bosom squeezing, when the ink back from the arms to the distance, the squeegee direction should be the same, covered ink consistency.
5. How much ink is squeegeed on the PVC board depends on the dynamic pressure of the squeegee. Scraper hardness 70 ° -75 °, the vertical corners to be smooth, the length of the scraper should be 2cm-3cm on both sides of the screen. Squeegee angle pressure and speed should be mastered by themselves, and necessary adjustments should be made in time.
6, when printing finished products to install aluminum alloy frame or plastic frame, the edges of the frame should be polished smooth, so as to avoid rough, cut the sense of the hand, should pay attention to clamping the frame angle, can not be loose, after the installation is complete, must be immediately Bagging, to avoid damage to the surface of the signboard, packing and storage of qualified products.
Source: PACK.CN
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