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

roto-molding-Indiana-Rotational moulding refers to a plastic manufacturing method that produces hollow stress-free products. The method uses high temperatures and bi axial rotation to come up with seamless, one piece items that have several designs, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing processes because no pressure is called for. It also has few rivals when it involves the production of sizable hollow products which are long lasting and inexpensive.There is a wide range of product lines that are developed by this process including large water tanks, automobile items, sophisticated molded medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in terms of style 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 Indiana PA 15701, 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 rotomoulding 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 Molding-Indiana-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 Indiana 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 Roto-Molding Method in Detail

This molding procedure has been used since ancient times for creatingvseverl product lines. Egyptians as an example, worked with rotomoulding solutions in the producing of ceramics. The Swiss were also working with this rotation design to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this technique some time between 1940 and 1950. Due to the fact that it was viewed to be a rather slow process, the technique has however taken long to catch on

1. Mould prep work.
A predetermined amount of polymer in grain form is packed into a hollow mold. The mold is usually constructed from cast aluminium or sheet steel material. The coloration desired for the end 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 engineering.

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 secured and positioned inside the oven.

2. The heating and fusion phase.
Once inside the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done slowly and gradually, about 20 rotations per min. One thing that is critical at this point is the amount of time the mold will spend within the oven. If it overstays, the product will lose value and durability, creating a weak product. If it is extracted from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finalized product line.

3. Mould cooling down.
When the material has sufficiently spent the right amount of time in the oven, it is then removed 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 shrinks a little for ease of extraction from the mold. This is yet another measure that relies a lot on the right timing, since rapid cooling reduces the material too quick, causing bending of the material.

4. The discharging or de-molding step.
As soon as the product within te mold has cooled effectively, the person handling the operation can then remove the finalized product from the mould. The procedure is repeated from the start, giving a series of similar products.

For more information on the different rotational molding options offered for the Indiana PA 15701 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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