As explained by LearnMech in their article, “Introduction of Blow Molding | Advantages and Disadvantages of Blow Molding,” blow molding is a widely used manufacturing process for producing hollow plastic parts by inflating heated plastic into a mold.The process starts with thermoplastic pellets being heated above their melting temperature and molded into a preform using injection molding. This preform is then heated again and shaped into a hollow tube (parison), which is clamped between two mold halves. High-pressure air (typically 60 to 140 psi) is then used to inflate the plastic, forcing it to conform to the mold’s shape. Once cooled, the solidified part is removed, often requiring final trimming.
Key Benefits of Blow Molding:
- Efficiency – A single-stage process where preform manufacturing and molding occur in the same machine.
- Cost-Effective – Ideal for high-volume production of bottles, containers, and industrial parts.
- Design Flexibility – Allows for complex shapes and lightweight, durable products.
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Article with all rights reserved, courtesy of LearnMech — https://learnmech.com
