Wall thickness

Wall thickness has a direct influence on the following aspects:

• Mechanical stability: thicker walls increase the strength and load-bearing capacity of a component.

• Weight: thinner walls reduce the overall weight, which is an advantage in many applications, such as the automotive or aerospace industries.

• Material consumption: wall thickness affects the amount of material used and therefore the costs.

• Thermal insulation: a greater wall thickness improves insulation against heat or cold.

• Flexibility: thinner walls offer greater flexibility, while thicker walls are stiffer.

The optimum wall thickness is determined by various factors:

• Material: the strength, elasticity and processability of the material play a central role.

• Load requirements: mechanical, thermal or chemical loads require adapted wall thicknesses.

• Manufacturing process: processes such as injection moulding, extrusion or die casting affect the minimum and maximum wall thickness.

• Design and function: the shape and function of the component determine the wall thickness, e.g. for hollow bodies or profiles.

Wall thickness is a decisive parameter in many industries and applications:

Plastics industry

• Injection-moulded parts: an even wall thickness reduces stresses and improves dimensional stability.

• Containers and tanks: sufficient wall thicknesses guarantee pressure resistance and tightness.

Rubber industry

• Hoses: wall thickness affects pressure resistance and flexibility.

• Seals: adapted wall thicknesses ensure function and durability.

Metal industry

• Pipes: wall thicknesses affect compressive and tensile strength.

• Sheet metal: matched wall thicknesses minimise weight while maintaining stability.

Construction industry

• Insulating materials: thicker walls increase thermal and acoustic insulation properties.

• Support structures: optimised wall thicknesses ensure load-bearing capacity and longevity.

Wall thickness is measured using various methods:

• Ultrasonic measurement: non-destructive measurement, ideal for pipes and hollow bodies.

• Mechanical callipers: precise measurement of solid materials.

• Laser-based methods: highly accurate, fast measurement in manufacturing processes.

• CT scan: for complex geometries and internal structures.

Specifying and maintaining wall thickness can involve challenges:

• Uneven wall thicknesses: often caused by inadequate process control or unfavourable tool design.

• Minimum wall thickness: walls that are too thin can lead to deformation or breakage.

• Material savings: reduced wall thicknesses can impair stability or function.

Wall thickness can be optimised in various ways:

• Simulation: CAD and FEM software to calculate optimum wall thicknesses.

• Process optimisation: improving manufacturing techniques for even, precise wall thicknesses.

• Choice of material: using high-strength materials that allow thinner walls.

• Why is an even wall thickness important? Uneven wall thicknesses can cause stresses, deformation and manufacturing defects.

• How can I optimise the wall thickness of my component? Through simulation, choice of material and precise manufacturing processes.

• What role does wall thickness play in plastics processing? It affects mould filling, cooling time and material costs.

• Are there minimum limits for wall thickness? Yes, these depend on the material and the manufacturing process, e.g. at least 1 mm for many injection-moulded parts.

Wall thickness is a central parameter that significantly influences the stability, function and cost-effectiveness of components. Precise measurement, simulation and process control make it possible to achieve optimum wall thicknesses that meet the specific requirements of different applications. A well-considered choice of wall thickness contributes not only to quality but also to resource conservation and cost efficiency.