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

rotomolding-Hector-Rotational molding refers to a plastic manufacturing technique that makes hollow stress-free products. The technique relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have varying forms, sizes and colors. This method is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing methods that no pressure is required. It also has few contenders when it comes to the manufacture of sizable hollow items which are long-lasting and inexpensive.There is a wide range of product lines that are generated by this process including large water tanks, automobile items, sophisticated molded medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in regards to design and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hector MN 55342, 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 moulding 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-Hector-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 Minnesota 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 Hector Minnesota 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 Components

This moulding technique has been used since ancient times for creatingvseverl products. Egyptians for example, used roto-molding procedures in the manufacturing of ceramics. The Swiss were also utilizing this rotation format to make hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this technique some time between 1940 and 1950. Given that it was thought of to be a somewhat slow-moving process, the technique has however taken long to catch on

1. Mold fitting.
A predetermined quantity of polymer in grain form is loaded into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The color tone intended for the final goods is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic production.

Preheating of the oven starts, 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 sealed and installed within the oven.

2. The heating up and fusion step.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done slowly, about 20 rotations per sixty seconds. Something that is essential at this point is the amount of time the mold will spend inside the oven. If it stays to long, the product will lose value and strength, generating a poor product. If it is taken out from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finished product line.

3. Mould cooling.
When the product has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it reduces a little for ease of removal from the mould. This is yet another procedure that depends upon a lot on the ideal timing, since rapid cooling shrinks the material too rapidly, causing bending of the item.

4. The removing or de-molding step.
As soon as the material inside te mold has cooled properly, the person handling the operation can then take out the finalized item from the mold. The technique is repeated from the start, giving a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Hector MN 55342 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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