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Rotational Molding - Process and Information |
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Process | Design | Cost | Advantages | Considerations Process
We are Roto-Lite, Inc. and for over a decade we have offered only the finest Rotationally Molded parts for our customers. We have a complete in-house facility to handle all your products needs. Design
Inserts, threads, handles, minor undercuts, flat surfaces that eliminate draft angles or fine surface detail can all be part of the design. Designers also have the option of multi-wall molding that can be either hollow or foam filled. The process also has a number of inherent design strengths, such as consistent wall
thickness and strong outside corners that are virtually stress free. If additional strength
is required, reinforcing ribs or kiss-offs can be designed into the part. Additives to help make the part weather resistant, flame retardant, or static free can also be added to the process. Cost
And because parts are formed with heat and rotation, rather than pressure, molds don't need to be engineered to withstand the high pressure of injection molding. Production costs for product conversions are reduced because lightweight plastics replace heavier, often more costly materials. Which makes rotational molding as cost effective for one-of-a-kind prototypes as it is for large production runs. Advantages of Rotational Molding
The possibilities are endless! We can assist you in a new design or answer any questions relative to the capabilities of the process on existing items!! Rotational Molding Considerations for SuccessWe know that if you follow a simple design protocol you can be assured that the best effort possible has been applied to your project. We recommend the following: 1. Product Design:
2. Strength Determinations 3. Industrial Design:
4. Piece part design. It is mandatory that the product designer have a complete understanding of the functional requirements of the product in the hands of the end user before any actual work is initiated. Once the design engineer has a clear understanding of the requirements of the product, the next step is to start hunting for a shape that will satisfy those requirements. Will rotational molding work for me? Material considerations: Once the design is roughed out, the designer must then select a plastic material that will: Process Considerations: Once the shape of the part, or parts, is known and one or more candidate plastic materials have been considered, the designer can then choose a suitable process. In our example Rotational Molding is the choice. Strength Considerations: Once the shape of the parts has been established and the combination of plastic material and processing techniques has been finalized, the designer can then turn their attention to the performance characteristics of that combination of shape, material, and process. In other words, will this material, molded in this shape by this process, perform as required. For example, let's say we are molding a small table, will the table be strong enough to withstand a 200 pound man using it as stepping stool? What next? We can not hope to answer all possibilities of what ifs at this site, we do know that if you have any questions as to how we do what we do, we can answer that question with out hesitation. If you require more information about an existing or new product, don't hesitate to contact us.
For more information about our rotational molding process or questions about your upcoming project, please contact us at (760) 863-5800 or by email at info@roto-liteinc.com.
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The rotational molding process starts with a good quality mold that is placed on a molding
machine that has a loading, heating, and cooling area.
Rotational molding offers design advantages over other molding processes. With proper
design, parts that are assembled from several pieces can be molded as one part, eliminating
expensive fabrication costs. 
If cost is a factor, rotational molding has the advantage over other types of processes as well. Rotational molding can easily produce large and small parts in a cost effective manner compared to injection and blow molding. Tooling is less expensive because there's no internal core to manufacture. Since there is no internal core, minor changes can be easily made to an existing mold if one is available... 
There are many advantages of rotational molding compared to other plastic processes: