How to Design Plastic Part Wall Thickness
Plastic part wall thickness design is an important part of plastic part design, and it has a significant impact on the quality, performance, and cost of plastic parts. If the wall thickness of the plastic part is too thin, it is easy to cause the plastic part to be insufficient in strength, deformed, or cracked; if the wall thickness is too thick, it will increase material consumption, prolong the production cycle, and reduce production efficiency. Therefore, when designing plastic parts, the wall thickness of the plastic parts should be reasonably selected according to the use requirements and material properties of the plastic parts.
General principles for plastic part wall thickness design：
The wall thickness of plastic parts should be uniform and consistent, and avoid local thinning or thickening.
The wall thickness of plastic parts should meet the strength and rigidity requirements of plastic parts.
The wall thickness of plastic parts should consider the shrinkage rate of the material.
The wall thickness of plastic parts should consider the limitations of the processing technology.
The wall thickness of plastic parts should consider cost factors.
Factors affecting plastic part wall thickness design：
Use requirements of plastic parts: The use requirements of plastic parts are one of the main factors affecting the wall thickness design of plastic parts. The use requirements of plastic parts include the load of plastic parts, the use environment, and the service life.
Material properties: The properties of the material will affect the strength, rigidity, shrinkage rate, and other properties of the plastic parts, and thus influence the wall thickness design of the plastic parts.
Processing technology: Processing technology will limit the wall thickness design of plastic parts. For example, the wall thickness of injection-molded plastic parts should generally not be less than 0.5mm; the wall thickness of blow-molded plastic parts should generally not be less than 0.3mm.
Cost factors: The wall thickness of plastic parts will affect material consumption and production efficiency, and thus affect the cost of plastic parts.
Considerations for Plastic Part Wall Thickness Design
When designing the wall thickness of plastic parts, comprehensively consider the use requirements, material properties, processing technology, and cost factors of the plastic parts.
When designing the wall thickness of plastic parts, try to make the wall thickness of the plastic parts uniform and consistent.
When designing the wall thickness of plastic parts, fully consider the shrinkage rate of the material.
When designing the wall thickness of plastic parts, consider the limitations of the processing technology.
When designing the wall thickness of plastic parts, comprehensively consider cost factors.
Common empirical data for plastic part wall thickness design
Injection molding
General wall thickness: 2~4mm
Thin-walled parts: 1~2mm
Micro parts: 0.5~1mm
