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rotomolding-Malinta-Rotational moulding pertains to a plastic manufacturing method that makes hollow stress-free product lines. The process relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various designs, sizes and colors. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing techniques that no pressure is needed. It also has few rivals when it comes down to the manufacture of large size hollow items which are resilient and inexpensive.There is a variety of items that are generated by this process including large size water tanks, automobile materials, sophisticated molded medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to style and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Malinta OH 43535, 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-Malinta-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 Ohio 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 Malinta Ohio 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 Procedure Components

This moulding technique has been used since ancient times for creatingvseverl items. Egyptians for instance, employed rotomoulding methods in the creating of ceramics. The Swiss were also making use of this rotation style to generate hollow chocolate eggs. Some plastic items in the USA were developed utilizing this method some time between 1940 and 1950. Because it was considered to be a rather slow method, the process has however taken long to become popular

1. Mold fitting.
A predetermined measure of polymer in grain form is loaded into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The coloration needed for the final product is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic production.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then secured and placed inside the oven.

2. The heating up and fusion step.
Once inside the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 revolutions per min. One thing that is important at this moment is the amount of time the mould will spend within the oven. If it stays to long, the component will lose stability and durability, creating a faulty item. If it is removed from the oven too early, the polymer will not have liquefied correctly, which generates bubbles in the finished product line.

3. Mould 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 material cools, it shrinks slightly for ease of extraction from the mould. This is another measure that relies a lot on the ideal timing, since quick cooling reduces the material too fast, causing warping of the material.

4. The discharging or de-molding step.
Once the product within te mold has cooled adequately, the person managing the operation can then extract the completed product from the mold. The function is repeated from the start, supplying a number of exact product lines.

For more information on the different rotational molding options offered for the Malinta OH 43535, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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