At present, there are many types of foam plastics on the market, and there are various forming methods, but its forming qualitative process generally has to go through three stages :(1) forming bubble core; (2) Expansion of bubble core; (3) Curing and shaping of the bubble body.

Low foamed is relative tall foamed and decide, tall foamed plastic is to point to foamed multiple big foamed plastic, it is with 4 times commonly for dividing line, be more than 4 times get to be called high foamed plastic, be called below 4 times low foamed plastic.

The commonly used foam plastic mattress, seat cushion, packing liner and foamed plastic film, etc., are mostly high foamed plastic; Foamed board, tube, profiled material waits with model the foamed plastic that replaces wood, it is low foamed plastic, foamed plastic foamed multiple is equal to the ratio of density of the same kind of plastic that does not send and foamed.

Many plastic raw materials can be used for low foaming extrusion molding, such as PVC, PS, LDPE, HDPE, ABS, PP, etc., but some products are difficult to commercialize, just stay at the laboratory level, mainly to control the size of bubble body, bubble holes and the number of bubbles is difficult, it is difficult to ensure the size of bubble holes, bubble holes evenly distributed, meet the requirements of products.

Here is just a simple explanation of the principle of low foaming and the size of the foam applied to the field.

Pingyang Jinshi mould Co., LTD specializes in the production of foam mould, more related products please pay attention to the official website www.zjjdmj.cn