As one of the five most consumed polymers in the world, PVC cannot be processed in pure form and typically several batches of additives must be added. These additives include thermal stabilizers, internal and external lubricants, processing aids, impact modifiers, etc. which are selected based on required properties and application site. In the case of PVC foam, a foaming agent, as well as a melt viscosity controller agent, is required as an additive to control the foam structure.

As one of the five most consumed polymers in the world, PVC cannot be processed in pure form and typically several batches of additives must be added. These additives include thermal stabilizers, internal and external lubricants, processing aids, impact modifiers, etc. which are selected based on required properties and application site. In the case of PVC foam, a foaming agent, as well as a melt viscosity controller agent, is required as an additive to control the foam structure.

Компания Unifoam, одна из дочерних компаний промышленной группы Vispar, была создана в году для производства полимерных листов. Uniform является одним из ведущих производителей пенополистирольных плит в Иране и на Ближнем Востоке. Мы производим тисненые, ламинированные и однослойные ПВХ листы.

In the production of foam boards, the mixed material enters the production line (counter-rotating twin screw extruder) to melt due to friction, shear, and heat. In the end, the extruder acts as a foam generator due to the heat generated. Chemicals are usually used as foaming agents that release carbon dioxide or nitrogen as they heat up. The released gas creates cavities in the PVC that are manageable by controlling the conditions and using processing aids. Then, these materials are passed through the sheet mold and, after exiting, the dimensions of the two plates are stabilized by a calibration system. At the final stage, the edges of the sheet are cut and sawn as required to prepare for packaging.

. PVC plastic artificial marble plate sheet board production line extrusion machine plant making machine electrical system has mainly applied imported parts, it has multiple alarm system, and there are few problems which can be easily eliminated. The cooling system has applied special design, heat emission area is enlarged, the cooling is rapid, and temperature control tolerance can be ± degree.