Blow molding – Definition & Meaning

Blow molding is a manufacturing process used to create hollow plastic parts by inflating a heated plastic tube until it fills a mold and then cooling it to form the desired shape. This process is widely used in the production of bottles, containers, and other hollow plastic products.


Blow molding is defined as a manufacturing process in which a hollow plastic part is formed by inflating a heated plastic tube until it fills a mold. This process can be used to produce a wide range of products, from small bottles to large containers.


The origins of blow molding can be traced back to the 19th century, when glass blowers began using similar techniques to create glass bottles. However, it was not until the mid-20th century that the process was adapted for use with plastic materials.

Meaning in different dictionaries

According to the Merriam-Webster dictionary, blow molding is “a process for forming hollow plastic articles (as bottles) by forcing a stream of air into a heated tube of plastic material that has been extruded into a mold.”

The Oxford English Dictionary defines blow molding as “a process for shaping a thermoplastic material by inflating it with compressed air while it is still in a heated, plastic state.”


Blow molding is commonly associated with the production of plastic bottles and containers. It is also used to produce a wide range of other products, including automotive parts, toys, and household items.


Synonyms for blow molding include blow moulding (British spelling), plastic blow molding, and extrusion blow molding.


There are no commonly recognized antonyms for blow molding.

The same root words

Blow molding is derived from the words “blow” and “molding.” Blow refers to the process of inflating the plastic tube, while molding refers to the process of shaping the plastic into the desired form.

Example Sentences

  1. The company specializes in blow molding plastic bottles for the beverage industry.
  2. The automotive parts were produced using a blow molding process.
  3. The toy manufacturer uses blow molding to create a wide range of products.
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