The blow-molding technique is a versatile process whereby air pressure is used for blowing hot plastic into the cavity of a mold. This process has the advantage of producing more rigid and lighter parts than other plastic-manufacturing techniques.
The Advantages
- Lightness
- Inherent mechanical structure
- Impact absorption
- Possibility of making parts multifunctional
- Profiled finish on all surfaces
- Secure parts with smooth edges and without chinks
- Quality and consistency of surface finishes
- Insulation
- Ability to contain, circulate and support
- Possibility of obtaining single- or double-walled parts
Comparative Table of Processes
| |
Blow Molding |
Thermoforming |
Rotational molding |
Injection |
| Cost of mold |
Moderate |
Low |
Low-Moderate |
High |
| Cost of Mold Touchups |
Moderate |
Moderate |
Moderate |
High |
| Cost of part |
Low - Moderate |
High |
Moderate |
Low |
| Production Speed |
Moderate-High |
Low |
Low |
High |
| Production Volume |
Low to High |
Low - Moderate |
Low – Moderate |
High |
