Analysis of the four advantages and three disadvantages of the injection molding process

Hollow plastic products produced by injection molding process have the following advantages compared with hollow plastic products produced by extrusion process.

1 Plastic bottles are molded from raw materials to finished products with a high degree of automation. They do not require manual secondary processing, save labor, and are hygienic and meet the GMP requirements for pharmaceutical packaging. They are especially suitable for producing pharmaceutical bottles.

2 The products have beautiful appearance, accurate bottle mouth size and stable weight of plastic bottles.

3 The plastic products are blow-molded by injection type embryo at one time, with no waste at the mouth and bottom of the bottle and smooth sealing performance of the bottle.

4 Suitable for the production of high-grade and exquisite plastic hollow products, such as cosmetic bottles, baby bottles, space cups, light balls, etc.

Injection blow molding process has several disadvantages compared with extrusion process.

1 The process is complicated, and the mold processing is difficult to master.

2 Many mold parts, long production and processing cycle and high cost.

3 Not suitable for multi-species and small batch products.