Screen printing self-luminous identification system, from the process point of view, there is no essential difference with other printing methods. The number of companies specializing in the development of this product in China is very small, so this article will briefly describe the situation in production and hope to benefit screen printing companies that are interested in developing this product.
There is a corresponding national standard for marking production, which is no different from ordinary optical system markings. The difference is that the electroluminescent component is changed to self-luminous material. In Beijing, a company specializing in the development and market development of this product, such as Yingguang Wannian Technology Co., Ltd., its identification system consists of more than 180 varieties, covering all aspects of daily use of the fire and safety fields; Dalian Luming , the world leader in the production of luminescent materials, and the related products developed by its pilot companies also have more than 100 varieties. In addition, there are more than 50 varieties of military self-illuminated logos used by the Institute of Space Research and the Institute of Marine Research. Military logos may not be seen in public publications.
In the production, market development and application of self-luminous identification systems, these companies have accumulated a wealth of experience. First of all, in the selection of production sites, clean, bright, dust-free and well-ventilated are required.
The production equipment generally uses a semi-automatic screen printing machine, which is conducive to uniform color printing on a large area. The use of hand-painted self-luminous materials, it is difficult to ensure the uniformity of the brightness of the product, light uniformity and other parameters, therefore, does not advocate the use of manual screen printing self-luminous identification system.
The logo is divided into indoor type and outdoor type. The printed material used in outdoor type can withstand the test of temperature difference and the direct irradiation of ultraviolet rays; the indoor type generally uses solvent type ink. Many companies are also trying to carry out UV transformation, but some of the parameters of the product are difficult to guarantee for a long time. The substrate is generally made of a PVC board containing certain inorganic materials. The thickness is about 1mm. The outdoor product is basically steel and aluminum. Both materials are non-flammable. To sum up, the process of labeling products is roughly as follows.
Blanking→cleaning and polishing→printed bottom white→printed safe color→printed white light emitting material→overprinting varnish→detection→punching, edge trimming, adhesive backing, frame mounting→outer packaging
The above procedures are not difficult for general printers to understand. Many signage companies have ready-made equipment. An umbrella color can refer to the latest standards of the national label product, and then go to the ink manufacturers to order or white ink preparation.
Screen printing self-luminous materials is a key process, the product must ensure that the brightness, uniformity and duration of light emission meet the quality requirements of the relevant products. The State Fire General Administration has a special testing agency. Products must be sent to the statutory department for inspection before being sold on the market. Inspections are generally conducted once a year. As for the assurance of product-related parameters, self-inspection can also make the product quality meet unity standards. Specific operation: The standard light box can be made by oneself, the ordinary fluorescent tube is built in, and the qualified product and the testing product are placed on the same position of the light box for comparative experiments, and the product can be known whether it meets the requirements in the relevant parameters. In addition, there are professional measurements: luminosity foods. However, it is expensive, and generally manufacturers do not need to spend a lot of money to purchase. Here we need to emphasize that the printed materials must be printed in one color and then printed in the second color. In general, according to the requirements, they must be continuously printed 4-8 times. Nowadays, the second-generation luminescent materials are generally used. The material diameter is not a single, but an interval. Therefore, attention should be paid when selecting the screen, and the parameters of the luminescent materials at the bottom of the manufacturer should be taken into consideration.
The purpose of the cover-printing varnish is to prevent blemishes while also having a certain beautification effect. The logo is placed in the same place where the walkway is placed for a long time. Dust will inevitably fall, and the varnish will make it easier to clean.
The service life of outdoor signage is generally 5-7 years, which requires considerable attention in ink and substrate selection. The printing process is basically the same as indoor printing. The ink generally uses two-component reactive ink and thermosetting ink, and Cover transparent hard oil to enhance the durability of the cloth used in the product.
Due to the elimination of the electroluminescent portion, the self-luminous escape logo system is also very flexible in its use form. It can be provided with a uniform width light strip at the height of the aisle baseboard, and can also be attached to the safe passageway using ground material. On the floor tiles, domestically, professionally made films from Taiwan are generally used. This film is extremely wear-resistant, can be coated on the surface of the label after the adhesive, posted on the floor tiles, sealed with a sealant around, waterproof immersion.
In the case of fire smoke, the evacuees generally move forward, the electroluminescence time is short, the photoluminescence time is relatively long, up to 8-12 hours, the disadvantage is that the luminescence brightness is not high, but the product Escape does not need such high brightness, as long as it can play the role of a correct guideline.