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

rotomoulding-Newtown Square-Rotational molding refers to a plastic manufacturing procedure that creates hollow stress-free product lines. The process relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have varying designs, colors and sizes. This technique is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few contenders when it pertains to the manufacture of large size hollow products which are long-lasting and inexpensive.There is a variety of products that are developed by this process including big water tanks, automobile products, intricate shaped medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in regards to style and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Newtown Square PA 19073, 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-Newtown Square-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 Newtown Square 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 Rotomolding Process Components

This moulding operation has been used since early times for creatingvseverl product lines. Egyptians for instance, used rotocasting solutions in the making of ceramics. The Swiss were also working with this rotation style to make hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. Given that it was looked at to be a relatively slow-moving procedure, the method has however taken long to become popular

1. Mold prep work.
A fixed amount of polymer in powder form is loaded into a hollow mold. The mold is usually made of cast aluminium or sheet steel substance. The color tone preferred for the final 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 style of plastic manufacturing.

Pre-heating 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 sealed and placed inside the oven.

2. The heating and fusion step.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The spinning is done gradually, about 20 spins per minute. Something that is important at this point is the amount of time the mold will spend within the oven. If it overstays, the material will lose stability and strength, generating a weak item. If it is removed from the oven prematurely, the polymer will not have liquefied correctly, which generates bubbles in the completed item.

3. Mould cooling down.
When the component has sufficiently 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 generates a cool mist. When the product cools, it reduces somewhat for ease of extraction from the mould. This is one more procedure that depends upon a lot on the correct timing, since rapid cooling decreases the material too quick, causing bending of the material.

4. The unloading or de-moulding phase.
Once the component inside te mould has cooled effectively, the person managing the procedure can then extract the finished item from the mould. The process is repeated from the start, providing a series of exact product lines.

For more information on the different rotational molding options offered for the Newtown Square PA 19073 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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