If you need to create a hollow plastic product with thin walls, Blow Molding is the way to go. There are currently about 20 blow molding factories registered on emold.net. Please feel free to post your RFQ.

Production Equipment

Blow Molding:

There are three main types of blow molding: extrusion blow molding, injection blow molding, and stretch blow molding. The blow molding process begins with melting down the plastic and forming it into a parison or preform. The parison is a tube-like piece of plastic with a hole in one end in which compressed air can pass through. The parison is then clamped into a mold and air is pumped into it. The air pressure then pushes the plastic out to match the mold. Once the plastic has cooled and hardened the mold opens up and the part is ejected.

Parts made from blow molding are plastic, hollow, and thin-walled, such as bottles and containers that are available in a variety of shapes and sizes. Small products may include bottles for water, liquid soap, shampoo, motor oil, and milk, while larger containers include plastic drums, tubs, and storage tanks. Blow molded parts can be formed from a variety of thermoplastic materials, including the following:

Basic Process:

Typical Blow Product

tool case



desk and chair

children toy

water tank & kettle

traffic facility

auto accessory

oil bottle

Sample Blow Mould