The extrusion process is one that predates plastic itself but it’s one that has become synonymous with plastic applications today. Plastic extruders are used to create a wide variety of things including plastic tubing, trims, seals, plastic sheets and rods.

To get the perfect extruded part, plastic manufacturers use a number of techniques, machines and methods. One element that is crucial in all of this is design. The design of part can be its downfall which is why we look at three common extrusion design mistakes to avoid in this post.

Designs that are too complex

Overly complicated designs are not as durable as their simpler counterparts which is why they should be avoided for the plastic extrusion process. Designs that include cut outs areas, multiple bore holes and those that are very small can challenging because of the nature of the extrusion process not to mention they create additional costs.

Hollowed out designs

Extrusions need an internal area of support when they are created in order to achieve a new or hollow space. Without the supportive structure of the die a hollowed out parts can collapse or fail to meet the requirements for wall thickness and specification. As mentioned before designs with more than a single bore hole are more complex and require more effort to produce.

Overly tight tolerances

Tolerances under 3mm are difficult to accommodate and may require more runs and are in turn more expensive. Why? Because during the process of heating and cooling the plastic may change in size. Tolerances above 3mm may easily be managed when compared to their smaller counterparts.

Plastic & Chemical Trading together with our international partners deliver world class extrusion solutions to South Africa. If you’re in the market for a plastic manufacturing solution that can stand the test of time, contact Plastic and Chemical trading today.

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