R&R Technologies is the leaders in rotomolding. We are often asked questions. We have received so many questions that we decided to compile the most commonly asked here to find key information.
What parts are compatible with a roto mold?
There are so many options. It is much easier to list just a few items that aren’t suitable for rotomolding when this question is asked. High volumes of products are usually required, but not always.
Products with tight tolerances have very rigid design parameters that can't tolerate even small variations. The tolerance average is about 0.002 inches. But most designs can be flexible to a greater extent than this!
Most of the time, it is. It depends on what project you are working on, but rotomoulding is a good option for small- to medium-sized batches. Rotomoulding can make small batches of ten products. You can get exactly what you need, without worrying about having fifty to a hundred spares.
Which products are most effective in roto-molding?
Rotomoulding is a great choice for unusual or specialized products. Rotomoulding is able to produce one piece without the need to mix multiple parts. Because there are no stress points or seams, the finished product is less likely to crack or break. This process is ideal for chemical handling containers and fuel tanks. Any crack can lead to serious damage.
What are the best materials for roto molding?
There are many: cross-linked polyethylene can be low-density or high-density. Each has its own advantages. Cross-linked polyethylene won't crack or break when exposed to extremely low temperatures (temperatures down as low as -25C). It is not terrible! High-density polyethylene, for example, is used in many agricultural products. For applications that need a lot of flexibility, polyvinyl chloride is the best choice.
Another important aspect is their temperature resistance. Temperature resistance is affected by two factors. It all depends on the product's exposure to extreme temperatures and how long. PVC can withstand temperatures between 40C and 50C, while polyethylene can withstand temperatures as high as 60°C. As long as they aren't being set on fire, you can count on their temperature resistance.
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