Calendering: PVC banner fabric
The calendering method is to thoroughly stir a variety of raw materials such as PVC powder and liquid plasticizer, and then bond with the base fabric by a pressure of a high-temperature heat roller. It is characterized by good surface flatness and uniform light transmission, and has an advantage in the inner lighting cloth. However, due to the limitations of the equipment, the width is generally no more than 3 meters. The 645 and 945 light box cloths developed by 3M Company of the United States are all produced by this process; the Lexi light box cloth developed by LG Korea is also representative of such a process.
Sticking legal: PVC laminated banner
PVC banner flex is formed by forming a PVC film on the upper and lower layers, and by heating, it is bonded to the middle light guiding fiber web under the pressure of the heat roller, and is cooled and formed. The biggest feature of this process is its excellent inkjet ink absorption and strong color expression. Therefore, with the rise of large-scale inkjet industry, it also brings unlimited vitality to such light box fabrics. At present, the market share of such light box cloth in China has exceeded 70%.
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