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

rotomolding-Burnham-Rotational moulding refers to a plastic production method that creates hollow stress-free products. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have many different forms, colors and sizes. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing processes because no pressure is needed. It also has few contenders when it involves the manufacture of large hollow products which are durable and inexpensive.There is a variety of items that are developed by this process including large water tanks, automobile products, complex designed medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in regards to style and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Burnham PA 17009, 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 Products-Burnham-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 Pennsylvania 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 Burnham Pennsylvania 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 Procedure Components

This molding method has been used since earlier times for creatingvseverl items. Egyptians for example, applied rotocasting procedures in the producing of ceramics. The Swiss were also applying this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this method some time between 1940 and 1950. Due to the fact that it was viewed to be a rather slow approach, the technique has however taken long to catch on

1. Mold prep work.
A fixed measure of polymer in powder form is filled into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel material. The coloration intended for the finished item 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 design of plastic engineering.

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 secured and placed inside the oven.

2. The heat and fusion process.
Once within the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done slowly, about 20 spins per minute. Something that is vital at this moment is the period of time the mold will spend inside the oven. If it stays to long, the material will lose stability and strength, generating a poor product. If it is extracted from the oven too early, the polymer will not have flowed correctly, which produces bubbles in the finished product line.

3. Mold cooling down.
When the material has completely spent the enough 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 creates a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mould. This is one more step that depends upon a lot on the ideal timing, since quick cooling decreases the material too quick, causing warping of the material.

4. The unloading or de-molding step.
When the material within te mould has cooled correctly, the molder taking care of the procedure can then take out the finished item from the mold. The procedure is repeated from the start, supplying a number of similar products.

For more information on the different rotational molding options offered for the Burnham PA 17009 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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