Precautions To Take With Rotational Molding

Hollow parts are now pretty simple to manufacture thanks to rotational molding. It involves rotating hollow molds that are filled with materials. If you plan on using this molding process to create things like parts or containers, take these precautions.

Select a Resin Material

Once you've made a hollow mold for rotational molding, you want to think about what resin material is going inside it. You have a lot of solid choices, including LDPE, HDPE, and LLDPE. It helps to think about the characteristics that would benefit the product you're trying to create. 

For instance, if you want something that has amazing warp resistance, LDPE resins are a solid choice that you can trust to last. If you want something that can resist a lot of impact, HDPE resins are suitable. Be patient with this resin search so you can identify great properties that make rotational molding even easier to carry out. 

Consider Pre-Colored Resins If Color Is Applicable

If you're trying to create a product with a specific color through rotational molding, then it's best to choose pre-colored resins. They end up turning out a lot better compared to if you tried adding in color later throughout the molding process.

Taking this approach can lead to poor color quality at the end or make it difficult to achieve the same color consistency. Conversely, pre-colored resins already have the perfect color properties, and that won't change despite how resins are rotated in a hollow mold during this molding process. 

Set Up a Proper Cooling Station 

In order for your hollow molds to come out perfect after rotational molding is completed, a cooling process is required. You can set up specialized cooling stations to make this stage a lot easier to complete. 

These cooling stations can be powered by either air or water. You just need to have this station prepared before rotational molding takes place. Then once your molds get up to the right temperature, you can quickly transition them over to the cooling station and get desirable attributes. That is key for preventing wall thickness issues. 

Rotational molding is an innovative molding process that works out well thanks to its low-tooling and low-temperature design. If you make sure your molds are set up correctly and take your time finding out which optimal resin materials are ideal, this molding process has a higher probability of helping you create amazing products that are hollow. 

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