Loss-in-weight measurement in plastic modification operations

A brief description of the mixture

In the processing of plastic materials, we often need to be a certain ratio of the synthetic resin base materials and other necessary accessories (such as slag, glass fiber) and additives (such as plasticizers, flame retardants, antioxidants , Nucleating agent, etc.) into the compounding extruder. This formula-based process is called plastic compounding. Plastic compounding dates back to the birth of celluloid in 1870. Since then, with the plastic coloring, blending, filling, enhancement and other modified technology development, a variety of common plastics and engineering plastics compounding technology is also improving. By the late 1970s, more than 60% of the world's thermoplastics had to be compounded prior to the processing of specialty or even shaped products. In the meantime, all kinds of compounding equipment (co-rotating twin screw loss in weight feeder, reciprocating single screw loss in weight feeder, continuous Mixing machine, etc.) research and development have also been considerable development.

Loss of weight feeder is widely used in plastic modification operations

At present, with the increasing demand for product quality, working environment, and automation, the application of weight loss feeder is also becoming more and more widespread. It is estimated that the domestic market volume of twin-screw extruder production lines about 20,000, of which less than 8% of the extruder is equipped with a weight scale. The 2000 new production lines in the past year, with the proportion of weight-loss feeder scales are gradually increasing, the proportion of about 10-20%, but the overall proportion is still low, while the proportion of developed countries 60-70% or higher. It is estimated that the market demand for weightlessness in the next few years will be explosive.
In large, continuous plastic processing, weight loss feeders are basically required with ancillary peripherals, such as storage systems, automatic feeding to achieve the complete feeding function.