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

roto-molding-Lithopolis-Rotational molding refers to a plastic production procedure that produces hollow stress-free items. The process utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of shapes, colors and sizes. This method is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing procedures in that no pressure is called for. It also has few rivals when it comes to the manufacture of sizable hollow items which are durable and inexpensive.There is a wide range of products that are generated by this process including big water tanks, automobile items, complex molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in regards to style and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lithopolis OH 43136, 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

Plastic Molding-Lithopolis-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 Lithopolis 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 Method in Detail

This moulding method has been used since early times for creatingvseverl products. Egyptians for instance, applied rotomoulding systems in the producing of ceramics. The Swiss were also working with this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this approach some time between 1940 and 1950. Since it was looked at to be a rather slow procedure, the system has however taken long to become popular

1. Mould fitting.
A predetermined volume of polymer in particle form is filled into a hollow mold. The mold is usually built from cast aluminium or sheet steel component. The colour chosen for the end product is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic production.

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

2. The heating up and fusion process.
Once within the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done gradually, about 20 revolutions per minute. Something that is essential at this point is the period of time the mould will spend within the oven. If it stays to long, the product will lose value and strength, producing a faulty item. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which creates bubbles in the completed product line.

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 a little for ease of extraction from the mould. This is one more procedure that depends upon a lot on the correct timing, since quick cooling shrinks the material too quickly, causing bending of the item.

4. The offloading or de-molding phase.
Once the component inside te mold has cooled correctly, the molder managing the procedure can then remove the finalized product from the mould. The technique is repeated from the beginning, providing a series of similar items.

For more information on the different rotational molding options offered for the Lithopolis OH 43136, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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