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

rotomolding-Wells-Rotational molding refers to a plastic production practice that generates hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of designs, sizes and colors. This method is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing procedures in that no pressure is involved. It also has few competitors when it comes to the manufacture of sizable hollow products which are long lasting and inexpensive.There is a wide variety of products that are generated by this process including large water tanks, automobile items, complex shaped medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of type and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Wells ME 4090, 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 rotational molding 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

Plastic Manufacturing-Wells-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 Wells 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 Rotomolding Method in Detail

This moulding process has been used since ancient times for creatingvseverl product lines. Egyptians for example, used rotomoulding solutions in the making of ceramics. The Swiss were also making use of this rotation method to generate hollow chocolate eggs. Some plastic product lines in the USA were created using this technique some time between 1940 and 1950. Given that it was viewed to be a very slow-moving process, the process has however taken long to catch on

1. Mould readying.
A fixed amount of polymer in powder form is filled into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel component. The coloration preferred for the end product is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic assembly.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then secured and installed within the oven.

2. The heating and fusion phase.
Once placed into the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done gradually, about 20 revolutions per sixty seconds. One thing that is essential at this point is the amount of time the mold will spend within the oven. If it stays to long, the product will lose stability and durability, generating a poor item. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the finalized product line.

3. Mold cooling down.
When the component has completely spent the correct amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it shrinks slightly for ease of removal from the mould. This is yet another measure that depends upon a lot on the correct timing, since quick cooling reduces the material too quickly, causing warping of the product.

4. The un-loading or de-molding step.
As soon as the product inside te mould has cooled successfully, the person managing the operation can then extract the finalized item from the mold. The procedure is repeated from the start, supplying a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Wells ME 4090 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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