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

rotomoulding-Mcalester-Rotational moulding refers to a plastic manufacturing procedure that makes hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of shapes, sizes and colors. This method is also called 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 rivals when it comes to the manufacture of large hollow items which are long lasting and inexpensive.There is a variety of items that are developed by this process including large water tanks, automobile materials, sophisticated designed medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in regards to style and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Mcalester OK 74501, 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

Plastic Molding-Mcalester-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 Mcalester 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 Method in Detail

This molding operation has been used since ancient times for creatingvseverl products. Egyptians for example, applied roto-molding solutions in the making of ceramics. The Swiss were also making use of this rotation method to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this technique some time between 1940 and 1950. Given that it was looked at to be a rather slow approach, the procedure has however taken long to catch on

1. Mold prep work.
A fixed volume of polymer in grain form is filled into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel substance. The coloring wanted for the final item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Pre-heating of the oven starts, and it can 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 sealed and placed into the oven.

2. The heating and fusion procedure.
Once within the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done gradually, about 20 revolutions per minute. The main thing that is crucial at this moment is the period of time the mold will spend inside the oven. If it stays to long, the product will lose value and strength, generating a weak item. If it is removed from the oven too early, the polymer will not have flowed properly, which creates bubbles in the finished item.

3. Mold cooling down.
When the component has completely spent the right amount of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it reduces slightly for ease of removal from the mold. This is yet another measure that depends a lot on the right timing, since quick cooling reduces the material too quickly, causing bending of the item.

4. The unloading or de-molding step.
When the material inside te mould has cooled adequately, the molder managing the operation can then extract the finalized item from the mold. The procedure is repeated from the start, providing a number of exact product lines.

For more information on the different rotational rotomolding options offered for the Mcalester OK 74501 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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