What is Blister and Blow Molding?


Blister: a plastic processing technology, the main prin […]

Blister: a plastic processing technology, the main principle is that after heating and softening the flat plastic hard sheet, it is vacuum adsorbed on the surface of the mold, and then formed after cooling. Blister packaging: a general term for producing plastic products by a blister process and packaging the products with corresponding equipment. Blister packaging products include: blister, tray, blister box, synonyms are: vacuum cover, blister, etc.

The main advantages of blister packaging are that it saves raw and auxiliary materials, light weight, convenient transportation, good sealing performance, and meets the requirements of environmental protection and green packaging; it can pack any special-shaped products, and no additional buffer materials are required for packing; the packaged products are transparent and visible, Beautiful appearance, easy to sell, suitable for mechanized and automated packaging, convenient for modern management and labor saving.

Blow molding: also known as hollow blow molding, a rapidly developing plastic processing method. The tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while it is hot (or heated to a softened state), and compressed air is introduced into the parison immediately after closing the mold to blow the plastic parison. It expands and sticks closely to the inner wall of the mold, and after cooling and demoulding, various hollow products are obtained. With the birth of high-density polyethylene and the development of blow molding machines, blow molding technology has been widely used.