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Torque rheometry has proven itself a valuable tool for studying multicomponent thermoplastic systems to assess processing behavior. Torque rheometry measures the viscosity-related torque generated by the resistance of a material to the shearing action of the plasticating process. Typical analyses include the study of processing behavior, influence of additives, thermal sensitivity, shear sensitivity, compounding behavior, and others. Torque rheometry is therefore an excellent tool in helping determine the most process-stable formulation (resin, color concentrate, and additives) for your process. It is also often used successfully in trouble-shooting unwanted degradation and gel formation problems.

The principle of plastic film stretching is to melt the polymer resin through the extruder and extrude thick sheets at the glass transition temperature. In the high elastic state of the polymer under the appropriate temperature range of the upper melting point, the vertical and horizontal puller are successively advanced along the longitudinal and transverse direction under the action of external force a definite multiple of stretching, so that the molecular chains of the polymer are oriented and ordered in the direction parallel to the plane of the film; The orientation of the macromolecular structure is fixed by heat setting in the tensile state. Finally, the ideal plastic can be made by cooling and subsequent treatment

Extruder originated in the 18th century and is one of the types of plastic machinery. Based on the material flow direction of the nose and the screw ZX line, the extruder nose can be divided into the right Angle nose and the inclined Angle nose. Screw extruder is the use of screw pressure and shear force generated by screw rotation, can fully plasticizing and uniform mixture, rely on the mouth molding

Extension machine (calender) is a machine composed of two or more rollers, arranged in a certain form, at a certain temperature, rubber or plastic pressing extension into a certain thickness and surface shape of film, and can be fiber curtain canvas or wire curtain hanging glue machinery.The der can be divided into two rollers, three rollers, four rollers and five rollers according to the number of rollers