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

rotational moulding-Wynona-Rotational molding pertains to a plastic production method that generates hollow stress-free products. The technique relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different 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 forms.

The benefit that makes this different from other plastic manufacturing methods in that no pressure is needed. It also has few rivals when it involves the manufacture of large size hollow items which are long lasting and inexpensive.There is a wide variety of items that are produced by this process including large size water tanks, automobile items, sophisticated designed medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in regards to design 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 Wynona OK 74084, 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

Plastic Products-Wynona-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 Wynona 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 Roto-Molding Process in Detail

This moulding system has been used since ancient times for creatingvseverl products. Egyptians as an example, utilized rotational molding systems in the producing of ceramics. The Swiss were also making use of this rotation technique to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this technique some time between 1940 and 1950. Due to the fact that it was considered to be a somewhat slow technique, the procedure has however taken long to catch on

1. Mold readying.
A predetermined quantity of polymer in powder form is loaded into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel component. The color wanted for the finished 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 type of plastic engineering.

Pre-heating of the oven follows, 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 positioned inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done slowly, about 20 rotations per minute. Something that is essential at this moment is the period of time the mould will spend inside the oven. If it stays to long, the product will lose value and durability, producing a poor product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finalized product.

3. Mold cooling down.
When the material has sufficiently spent the enough of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it reduces a little for ease of extraction from the mold. This is yet another step that depends upon a lot on the correct timing, since quick cooling shrinks the material too quick, causing warping of the material.

4. The un-loading or de-molding phase.
As soon as the material inside te mold has cooled correctly, the molder managing the operation can then take out the finalized product from the mold. The technique is repeated from the start, providing a number of exact products.

For more information on the different rotational rotomolding options offered for the Wynona OK 74084 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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