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

rotational moulding-South Bend-Rotational molding refers to a plastic production technique that makes hollow stress-free products. The function relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have a variety of shapes, sizes and colors. This procedure is also referred to as 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 techniques in that no pressure is involved. It also has few contenders when it pertains to the manufacture of large size hollow items which are resilient and inexpensive.There is a wide variety of product lines that are produced by this process including big water tanks, automobile items, intricate designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to design and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in South Bend WA 98586, 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-South Bend-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 Washington 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 South Bend Washington 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 moulding process has been used since earlier times for creatingvseverl items. Egyptians for instance, used rotomoulding methods in the making of ceramics. The Swiss were also applying this rotation approach to make hollow chocolate eggs. Some plastic items in the USA were made using this procedure some time between 1940 and 1950. The technique has however taken very long to catch on because it was looked at to be a pretty slow-moving process

1. Mould preparation.
A predetermined quantity of polymer in grain form is loaded into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel substance. The coloring desired 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 format of plastic manufacturing.

Preheating of the oven starts, 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 heating and fusion phase.
Once placed into the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done gradually, about 20 revolutions per min. The main thing that is essential at this point is the amount of time the mold will spend inside the oven. If it overstays, the material will lose value and durability, generating a faulty product. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which creates bubbles in the finalized product line.

3. Mold cooling.
When the component has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks somewhat for ease of removal from the mould. This is one more procedure that depends a lot on the right timing, since quick cooling reduces the material too fast, causing bending of the material.

4. The discharging or de-molding step.
As soon as the material inside te mould has cooled adequately, the molder managing the process can then take out the finalized item from the mould. The function is repeated from the beginning, giving a series of exact items.

For more information on the different rotational rotomolding options offered for the South Bend WA 98586 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