Vacuum unit with _ in the PVC transparent sheet extrusion process

PVC transparent sheet extrusion production dedicated vacuum unit, has the characteristics of high efficiency, at the same time to save money. PVC calendering transparency is one of the main varieties of rigid PVC, usually directly using the powder production of PVC tree generally adopts conical twin-screw extrusion production, used in producing PVC particles generally produced by single screw extruder. But the question is: in the production process of common meet more bubbles, crystal point, sheet color is yellow, and other issues. To solve these problems need to consider a variety of reasons, choose the optimal solution, is recommended by vacuum unit in the application of PVC transparent sheet extrusion production this kind of, then we analysis.

the current packaging industry thriving, plastic packaging has become an indispensable part of our life. Many plastic toy is made of plastic sheet stamping. Plastic processing must first be plastic or glass particles for feed and extrusion, common extrusion equipment, extrusion is not uniform, extrusion efficiency of underground, and if the device is in the middle with foreign body, damages to the extrusion device easily.

first of all, we first to get to know the problems encountered in the production of PVC transparent sheet extrusion.

a, color yellow

1, poor stability of PVC itself

2, lack of stabilizer

3, a problem of temperature controller

2, has small bubble sheet

1, too much water in the PVC raw materials, such as the rainy day in the summer, be affected with damp be affected with damp raw material, which may be water in the barrel is not fully discharge, thermal expansion, and formation of air bubbles in the sheet.

2, other additives may also be moisture content is too high.

three, sheet microtek points to exceed bid, also called fisheye

some PVC resin particles are plasticizing, or plasticizing is bad. The reasons are: PVC resin itself quality is bad.

sheet extrusion molding with the characteristics of vacuum unit

in plastic processing, also known as extrusion molding or extrusion, also known as the pressure in the rubber processing. Refers to the material through the extruder, between the cylinder and the screw side heated plasticizing, edge was screw to push forward, through the nose, made of various cross section products continuously or semi-product of a processing method.

in the chemical fiber industry are also useful to the extruder spinneret material feeding, for melt spinning. Extrusion is applied to the thermoplastic plastic and rubber processing, can be carried out ingredients, granulation, rubber filtration, etc. , can be continuous production, and manufacturing for all kinds of products such as pipes, profiles, plate ( Or a sheet) , thin film, wire and cable, coating, rubber tire noodles, inner tube, tire tube, seals, etc. , the production efficiency is high. In synthetic resin production, extruder as reactor, continuous polymerization and processing.

vacuum unit in the application of PVC transparent sheet extrusion production, can provide a sheet extrusion production line, the reasonable design, without artificial, reduces the labor intensity, it has simple operation, easy to use, low cost, high efficiency, energy conservation and environmental protection, at the same time improve the performance of plastic sheet, reduce the production cost of plastic sheet, plastic sheet production is mostly adopt the way of multilayer co-extrusion composite extrusion, it has to save material, diversification, not poisonous adhesive, composite environmental requirements, etc.