In the world of in-house design and engineering, Western Case is able to provide its customers with comprehensive product design. From start to finish, customers can benefit from Western Case’s past experience in both design and engineering. When it comes to blow molded product design, the team at Western Case knows exactly what to do in every step of the product design process.
Blow Molding Design & Manufacturing Considerations
Blow molding, or extrusion blow molding, according to Engineer’s Edge, is the manufacturing process that creates hollow thermoplastics. When done in a split mold cavity, air pressure is applied to a heated plastic material, generally called parisons.
That process causes the material to expand, similar to a balloon. As the material expands, it presses against the walls of the mold cavity, causing the material to take shape. There are many blow molding manufacturers and blow molding plastic companies; it is important to select a company carefully.
Extrusion Blow Molding Advantages:
- Flash free
- Sizes ranging from very small to very large
- Less expensive molds
- Good dimensional precision
- Reduced assembly costs
Design Considerations Condensed:
When completing a blow molding project, the wall thickness should always be uniform in order to facilitate the rapid molding cycle time. During these projects, sharp corners should be avoided wherever possible, and the draft angle should always be perpendicular when the mold tool is open in the correct direction. Finally, the thickness of the body wall should never exceed a 2:1 ratio.