I. light box cloth is divided into three types according to the production process: light box cloth with knife scraping method, light box cloth with calender-pressing method and light box cloth with pasting method:
1, knife scraping method light box clothLight box cloth process is the liquid PVC paste with a number of back scraper evenly coated on the front and back of the base cloth, and then through the drying process to make it fully integrated into a whole, after cooling molding.Its characteristics are anti - permeability, anti - tension, anti - stripping ability is strong.Because Mian knife method products as a whole, to prevent stripping phenomena, and can make joining together through welding strength is greater than the product itself.At present, the width of the lamp box can reach 5m.Due to the complex production process and expensive production equipment, such products are mainly imported in the Chinese market and the price is relatively high.The most iconic are ULTRALON from Germany, UNIFLEX from South Korea and SIOEN from Belgium.
2. Calendered light box cloth
Rolling method is to mix PVC powder and liquid plasticizer and other raw materials, after the pressure of high temperature hot roller, and the base cloth into a whole.Its characteristic is the surface flatness is good, and pervious to light evenly, the lighting lamp cloth has the advantage.However, due to the limitation of equipment, the width is generally not more than 3m.Both the 645 and 945 light box fabrics developed by 3M of South Korea are produced by this process.The le xi light box cloth that another Korea LG company develops is also the representative of this kind of craft.
3, paste legal light box cloth
Pasting legal light box cloth is the upper and lower two layers of forming PVC film, through heating, under the pressure of the hot roll and the middle of the light fiber net bonding together, cooling molding.This kind of craft biggest characteristic is to have fine inkjet to absorb ink and stronger color expressive force.Accordingly, as the rise of large printing and painting industry, also brought infinite vitality to this kind of light box cloth.At present, the market share of this kind of light box cloth in China already exceeded 50%.Because of different types of machine nozzle principle is different.
Ii. According to the light transmittance and the position of the light source, it can be divided into three types: front lighting light box cloth, rear lighting light box cloth and grid cloth:
1, front lighting light box cloth: used to make a front light source light box, its light transmittance is generally between 5%-10%.This kind of light box cloth is used to make large outdoor light boxes because of its stronger ability to resist typhoons.2, after lighting light box cloth: used to make a light box, its light transmittance is generally between 25%-35%.This kind of light box to medium, small slant is much, use to make roadside light box more.3, grid cloth: according to the typhoon climate of Taiwan, fujian and other areas designed and produced, because this kind of material surface densely arranged with many mesh, can make the wind through the surface of the lamp cloth, so it can greatly reduce the pressure of the typhoon on the light box, make the picture to achieve a more long-term outdoor use effect.
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
