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

rotomoulding-Purcell-Rotational molding refers to a plastic production solution that produces hollow stress-free products. The technique relies upon high temperatures and bi axial rotation to follow up with seamless, one piece products that have a variety of designs, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing methods in that no pressure is required. It also has few contenders when it comes to the production of large hollow products which are resilient and inexpensive.There is a wide variety of products that are developed by this process including large water tanks, automobile materials, complex designed medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in terms of style and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Purcell OK 73080, 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-Purcell-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 Oklahoma 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 Purcell Oklahoma 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 Rotomoulding Process Components

This molding technique has been used since ancient times for creatingvseverl items. Egyptians as an example, worked with rotomoulding techniques in the manufacturing of ceramics. The Swiss were also working with this rotation method to create hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. The process has however taken very long to catch on because it was looked at as being a pretty slow process

1. Mould preparation.
A predetermined quantity of polymer in grain form is packed into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel material. The color needed for the final product 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 type of plastic manufacturing.

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

2. The heating and fusion procedure.
Once placed into the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done gradually, about 20 revolutions per min. Something that is essential at this moment is the amount of time the mould will spend within the oven. If it stays to long, the product will lose value and durability, producing a weak product. If it is taken out from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finished product.

3. Mold cooling down.
When the material has sufficiently 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 product cools, it reduces a little for ease of extraction from the mould. This is yet another measure that relies a lot on the ideal timing, since quick cooling shrinks the material too quickly, causing bending of the item.

4. The un-loading or de-molding step.
Once the material inside te mould has cooled successfully, the molder taking care of the process can then take out the completed product from the mold. The process is repeated from the start, providing a series of similar products.

For more information on the different rotational rotomolding options offered for the Purcell OK 73080 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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