The greater the degree of deformation of the blow molding product, the satisfaction with its appearance and the performance of the application decrease in a positive proportion, and the severe will lead to the scrap of the product. The deformation of blow molding products is not only bad for the quality of products, but also bad for the output and production cost of blow molding products. Therefore, the treatment of deformation defects of blow molded products is an important topic for various plastic processing enterprises to discuss in terms of skills. There are many reasons for the deformation of blow molded products, and it is far from enough to deal with it from the adjustment of process parameters. After a long time of practical work experience and the analysis and summary of relevant data, the thermophysical characteristics of plastic data and the conditions and parameters of the blow molding process have different degrees of influence on the deformation of blow molding products, it is necessary to conclude and consider and reasonable treatment.
Influence of thermal physical properties of data on deformation
(1) The use of cyanogen pigments in the processing formula will affect the crystallinity of polyethylene and lead to product deformation;
(2) The primary color blow molded products produced by materials without adding any pigments are not easy to deform, and the quality and output of the products can be improved;
(3) The use of plastic with low melting point and good fluidity, because it has a small shortening rate, fast cooling, and is not easy to deform, it can advance the quality and output of products.
