Looking for rotational molding alternatives for Maine? Want affordable custom plastic molding that is cost effective for Union area? Then give us a call at our toll free number 866-971-7861 or request a quote today!

rotational moulding-Union-Rotational molding refers to a plastic production practice that creates hollow stress-free products. The method relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have various shapes, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing procedures in that no pressure is required. It also has few rivals when it pertains to the manufacture of large size hollow items which are long lasting and inexpensive.There is a variety of product lines that are produced by this process including big water tanks, automobile materials, complex molded medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Union ME 4862, it is a cheaper way of making plastics. This is because apart from the fact that no pressure is required, the cost of mold preparation is low.
  • A wide array of design options.
    There is no limit to the kind of design one may want to create. The rotomolding process therefore allows for the manufacturing of products that have complex shapes for different purposes.
  • Size.
    The process provides room for the manufacturing of products of any size, large or small. As mentioned earlier, it has few competitors when it comes to the making of large tanks at low costs.
  • Low risk.
    Due to the low costs of creating a mould, the process allows for test runs before one can decide whether to do mass production. It therefore minimizes the risk of losing a lot of investment.
  • Durable products.
    The process allows for even coating of the mould with the heated polymer, giving the product a wall with uniform thickness. It also gives the option of double coating for increased durability. Sometimes metal inserts are placed inside the mould to further strengthen the product.
  • Environmentally friendly.
    There is no waste that could have a negative impact on the environment because the products that cannot be used are reground and reused as polymer.

Examples of Products Made by Rotational Molding

Custom Molded-Union-Rotocasting is a very versatile process, making it possible to create a variety of products for different industries.

  • Agricultural industry– From cattle feeders, water troughs, spray tanks etc.
  • Automotive industry– Filler tubes, dash boards, arm rests, sun visors, air conditioner duct work etc.
  • Furniture– We have plastic cabinets, chairs and tables made from this form of moulding.

There are numerous Maine plastic products also that have been made for the marine industry, lighting, waste storage and transportation, kayaks etc.

Few Disadvantages – There are nominal disadvantages that have been associated with rotocasting. For instance:

  • – The process is relatively slow when compared to injection moulding.
  • – There is a limitation when it comes to the type of raw material you can use. Only poly based and nylon polymers can be used.
  • – The process comes with an increased cost because the polymer has to be ground to powder form before use.
    These limitations are often overlooked considering that the process is still relatively cheap and offers more in terms of variety when it comes to the finished range of products.

Remember – There are new developments and discoveries that are being made as the world of plastic manufacturing in Union Maine continuously. For instance, tests are being done to see whether there are other materials that can be used for this process. But so far, rotomoulding offers a good option for the production of a wide range of inexpensive plastic products.

The Rotomoulding Process in Detail

This moulding system has been used since early times for creatingvseverl product lines. Egyptians for example, utilized roto-molding solutions in the of ceramics. The Swiss were also utilizing this rotation approach to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this approach some time between 1940 and 1950. Due to the fact that it was viewed to be a somewhat slow-moving method, the process has however taken long to become popular

1. Mould prep work.
A predetermined volume of polymer in particle form is packed into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel material. The color wanted for the final item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then secured and inserted into the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mold is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 spins per sixty seconds. One thing that is crucial at this point is the period of time the mold will spend within the oven. If it stays to long, the product will lose value and strength, generating a faulty product. If it is taken out from the oven too early, the polymer will not have flowed properly, which creates bubbles in the finished item.

3. Mold cooling down.
When the material has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it reduces somewhat for ease of removal from the mould. This is one more measure that depends a lot on the ideal timing, since rapid cooling decreases the material too fast, causing warping of the item.

4. The offloading or de-moulding step.
Once the material inside te mould has cooled adequately, the person managing the operation can then remove the completed product from the mould. The process is repeated from the beginning, providing a series of similar items.

For more information on the different rotational rotomolding options offered for the Union ME 4862 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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