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

rotational moulding-Escanaba-Rotational molding refers to a plastic manufacturing technique that produces hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have varying shapes, sizes and colors. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing techniques that no pressure is called for. It also has few competitors when it involves the creation of large hollow products which are long-lasting and inexpensive.There is a variety of items that are developed by this process including large water tanks, automobile items, intricate molded medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in terms of style 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 Escanaba MI 49829, 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 rotomoulding 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 Molding-Escanaba-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 Michigan 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 Escanaba Michigan 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 Procedure in Detail

This molding technique has been used since ancient times for creatingvseverl product lines. Egyptians as an example, used rotocasting solutions in the producing of ceramics. The Swiss were also utilizing this rotation format to make hollow chocolate eggs. Some plastic products in the USA were created utilizing this approach some time between 1940 and 1950. Given that it was thought of to be a very slow-moving technique, the method has however taken long to catch on

1. Mould prep work.
A predetermined volume of polymer in powder form is packed into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel material. The color tone wanted 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 format of plastic production.

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

2. The heating up and fusion phase.
Once within the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The turning is done slowly, about 20 rotations per minute. One thing that is crucial at this point is the period of time the mold will spend within the oven. If it overstays, the product will lose value and durability, producing a poor product. If it is removed from the oven prematurely, the polymer will not have melted correctly, which creates bubbles in the finalized item.

3. Mold cooling.
When the material 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 material cools, it reduces slightly for ease of removal from the mold. This is another procedure that relies a lot on the ideal timing, since rapid cooling reduces the material too rapidly, causing bending of the item.

4. The removing or de-molding phase.
When the material inside te mould has cooled properly, the person taking care of the process can then remove the finished product from the mould. The function is repeated from the beginning, making a series of identical items.

For more information on the different rotational molding options offered for the Escanaba MI 49829, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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