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

rotocasting-Ash Grove-Rotational moulding refers to a plastic manufacturing practice that makes hollow stress-free items. The method relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of designs, sizes and colors. This procedure is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing procedures that no pressure is required. It also has few contenders when it comes to the production of large hollow items which are resilient and inexpensive.There is a wide variety of products that are developed by this process including large water tanks, automobile items, complex molded medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in terms of design and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Ash Grove MO 65604, 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 roto-molding 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 Manufacturing-Ash Grove-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 Ash Grove 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 Roto-Molding Procedure in Detail

This molding procedure has been used since early times for creatingvseverl product lines. Egyptians for example, used rotomoulding methods in the of ceramics. The Swiss were also employing this rotation style to generate hollow chocolate eggs. Some plastic products in the USA were made using this method some time between 1940 and 1950. The technique has however taken very long to take affect because it was considered as being a pretty slow process

1. Mould preparation.
A predetermined volume of polymer in particle form is loaded into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel substance. The color wanted for the finished 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 type of plastic manufacturing.

Preheating of the oven follows, and it may 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 up and fusion phase.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The turning is done slowly, about 20 rotations per sixty seconds. One thing that is crucial at this moment is the amount of time the mold will spend within the oven. If it stays to long, the component will lose value and durability, making a weak item. If it is taken out from the oven too early, the polymer will not have flowed properly, which creates bubbles in the finalized product line.

3. Mould cooling.
When the material 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 a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mold. This is an additional measure that depends a lot on the ideal timing, since quick cooling shrinks the material too fast, causing bending of the item.

4. The offloading or de-molding phase.
When the material within te mould has cooled effectively, the person taking care of the process can then take out the completed product from the mould. The technique is repeated from the beginning, supplying a series of exact products.

For more information on the different rotational molding options offered for the Ash Grove MO 65604 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 custom molding

Local Resources

Production Example
Google Map