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rotocasting-Delaware-Rotational moulding pertains to a plastic production technique that produces hollow stress-free product lines. The technique relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying designs, sizes and colors. This method is also known as rotomoulding 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 involved. It also has few competitors when it comes down to the creation of large hollow items which are durable and inexpensive.There is a wide variety of product lines that are generated by this process including big water tanks, automobile items, sophisticated designed medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of type and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Delaware OH 43015, 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 moulding 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-Delaware-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 Delaware 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 Rotomoulding Process Components

This moulding procedure has been used since earlier times for creatingvseverl items. Egyptians for instance, worked with roto-molding solutions in the manufacturing of ceramics. The Swiss were also using this rotation technique to create hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this procedure some time between 1940 and 1950. Since it was regarded to be a fairly slow technique, the approach has however taken long to catch on

1. Mold readying.
A predetermined amount of polymer in particle form is filled into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel substance. The color preferred for the finished item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic manufacturing.

Pre-heating of the oven follows, and it can 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 sealed and placed into the oven.

2. The heating up and fusion step.
Once placed into the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 spins per min. The main thing that is crucial at this moment is the amount of time the mold will spend within the oven. If it overstays, the component will lose stability and durability, creating a faulty product. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which produces bubbles in the finalized product.

3. Mould cooling down.
When the component has completely spent the enough 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 creates a cool mist. When the material cools, it reduces slightly for ease of removal from the mold. This is an additional measure that depends a lot on the ideal timing, since quick cooling reduces the material too rapidly, causing bending of the item.

4. The discharging or de-molding step.
As soon as the material within te mold has cooled effectively, the person taking care of the procedure can then remove the finished item from the mold. The technique is repeated from the start, supplying a series of exact products.

For more information on the different rotational molding options offered for the Delaware OH 43015, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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