Supercritical foaming molding is a physical foaming molding technology, at the same time is also a kind of microcellular foaming molding technology, it is in the injection molding, extrusion and blowing molding process, first the supercritical state of other gases such as carbon dioxide or nitrogen injection to the special plasticizing device, make the gas and molten material after fully mixing/diffusion, single-phase hybrid sol formation, and then the sol guide mold cavity or extrusion die mould, make the sol produces pressure drop, so that the gas evolution formed a large amount of bubbles nuclear; During the subsequent cooling and molding process, the bubble core inside the sol keeps growing and forming, and finally the microporous plastic products are obtained.

Microporous plastics products have high specific strength and high cost performance, which can greatly improve the dimensional accuracy of products and shorten the product development cycle. Reduce residual stress and improve warping deformation of products. Eliminate surface indentation; Shortening the forming cycle of thin-walled products; Effectively save raw materials and reduce product quality; Foaming agent low cost, environmental protection; The mobility of the mixed sol was increased by 20%~40%, with low viscosity and easy to mold. Supercritical gas equipment is simple, low cost and green. Articles come from the Internet

Carbon dioxide extraction