What is the difference between blister, injection molding and blow molding?
1.The principle is different
The main principle of blistering is to heat and soften the flat plastic hard sheet, and then vacuum-adsorb it on the surface of the mold, and then form it after cooling;
The main principle of injection molding is to make thermoplastic or thermosetting plastics into plastic products of various shapes by means of injection molding machines;
Blow molding is a tubular plastic parison obtained by extrusion or injection molding of a thermoplastic resin. It is placed in a split mold after being heated. Immediately after closing the mold, compressed air is introduced into the parison to inflate the plastic parison. It is attached to the inner wall of the mold and is released from the mold by cooling to obtain various hollow products.
2.Different classification
Blister is not classified;
Injection molding has three types: rubber injection molding, plastic injection molding and injection molding;
According to the parison making method, blow molding can be divided into extrusion blow molding and injection blow molding, and new developments include multi-layer blow molding and stretch blow molding.