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

rotational moulding-Walnut Bottom-Rotational molding refers to a plastic manufacturing technique that creates hollow stress-free items. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have different forms, sizes and colors. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few rivals when it comes down to the manufacture of large size hollow items which are durable and inexpensive.There is a wide range of products that are produced by this process including large size water tanks, automobile items, intricate molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in regards to type 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 Walnut Bottom PA 17266, 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 rotational 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

Custom Molded-Walnut Bottom-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 Walnut Bottom 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 Process in Detail

This molding method has been used since early times for creatingvseverl products. Egyptians as an example, applied roto-molding solutions in the of ceramics. The Swiss were also applying this rotation format to create hollow chocolate eggs. Some plastic items in the USA were manufactured using this method some time between 1940 and 1950. The procedure has however taken very long to take affect because it was thought of as being a relatively slow-moving process

1. Mould fitting.
A predetermined measure of polymer in grain form is packed into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel substance. The coloration preferred for the final product 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 follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then locked and placed within the oven.

2. The heat and fusion process.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done gradually, about 20 rotations per minute. The main thing that is crucial at this point is the period of time the mold will spend inside the oven. If it overstays, the product will lose stability and durability, creating a weak item. If it is removed from the oven too early, the polymer will not have melted correctly, which creates bubbles in the finished product.

3. Mold cooling down.
When the product has completely spent the right amount 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 slightly for ease of extraction from the mold. This is another measure that depends a lot on the ideal timing, since rapid cooling decreases the material too rapidly, causing bending of the material.

4. The un-loading or de-moulding step.
When the component within te mold has cooled adequately, the molder taking care of the procedure can then extract the finished product from the mould. The process is repeated from the start, supplying a series of similar products.

For more information on the different rotational molding options offered for the Walnut Bottom PA 17266 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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