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

roto-molding-Carterville-Rotational moulding refers to a plastic production procedure that makes hollow stress-free product lines. The function relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have several forms, colors and sizes. This technique is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing procedures that no pressure is involved. It also has few contenders when it comes to the manufacture of large hollow products which are long-lasting and inexpensive.There is a wide range of product lines that are produced by this process including big water tanks, automobile products, intricate shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of design 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 Carterville MO 64835, 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-Carterville-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 Missouri 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 Carterville Missouri 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 molding method has been used since earlier times for creatingvseverl products. Egyptians for example, worked with rotomoulding solutions in the producing of ceramics. The Swiss were also making use of this rotation type to create hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this procedure some time between 1940 and 1950. The process has however taken very long to catch on because it was considered to be a very slow-moving process

1. Mould preparation.
A predetermined amount of polymer in grain form is loaded into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel material. The colour needed for the final goods is pre compounded into the polymer. The most generally 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 can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then locked and placed into the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done gradually, about 20 rotations per minute. The main thing that is important at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the product will lose stability and durability, producing a weak item. If it is removed from the oven too early, the polymer will not have melted properly, which develops bubbles in the completed product line.

3. Mould cooling.
When the product has completely spent the correct 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 a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mould. This is yet another procedure that depends a lot on the correct timing, since quick cooling reduces the material too quickly, causing bending of the material.

4. The removing or de-moulding step.
As soon as the product within te mold has cooled correctly, the person handling the operation can then take out the finalized product from the mold. The process is repeated from the beginning, supplying a series of exact product lines.

For more information on the different rotational molding options offered for the Carterville MO 64835 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic products

Local Resources

Production Example
Google Map