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

rotomoulding-Morristown-Rotational molding refers to a plastic manufacturing procedure that generates hollow stress-free items. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have several shapes, sizes and colors. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing techniques in that no pressure is involved. It also has few competitors when it pertains to the production of sizable hollow items which are long lasting and inexpensive.There is a wide variety of products that are produced by this process including large size water tanks, automobile items, intricate designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of type and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Morristown MN 55052, 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 rotocasting 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-Morristown-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 Morristown 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 Roto-Molding Procedure in Detail

This moulding procedure has been used since ancient times for creatingvseverl products. Egyptians as an example, used roto-molding methods in the of ceramics. The Swiss were also making use of this rotation technique to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this procedure some time between 1940 and 1950. Because it was considered to be a relatively slow system, the process has however taken long to become popular

1. Mould prep work.
A fixed measure of polymer in powder form is packed into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel substance. The colour desired for the finished goods 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.

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

2. The heat and fusion process.
Once inside the oven, the mold is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 spins per min. One thing that is critical at this point is the amount of time the mold will spend inside the oven. If it overstays, the product will lose stability and durability, producing a faulty item. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finalized item.

3. Mold cooling.
When the product 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 generates a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mold. This is an additional measure that relies a lot on the right timing, since rapid cooling reduces the material too rapidly, causing bending of the product.

4. The un-loading or de-molding step.
When the component within te mould has cooled properly, the molder taking care of the operation can then remove the finished item from the mold. The function is repeated from the beginning, supplying a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Morristown MN 55052 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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