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

rotomoulding-Bryan-Rotational molding pertains to a plastic manufacturing solution that generates hollow stress-free items. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of shapes, sizes and colors. This technique is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing procedures that no pressure is called for. It also has few rivals when it pertains to the manufacture of large size hollow products which are resilient and inexpensive.There is a wide variety of products that are generated by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bryan OH 43506, 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 rotomolding 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 Manufacturing-Bryan-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 Bryan 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 Rotomolding Process in Detail

This moulding process has been used since earlier times for creatingvseverl product lines. Egyptians as an example, applied rotocasting solutions in the creating of ceramics. The Swiss were also working with this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were created using this approach some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of to be a pretty slow-moving process

1. Mold preparation.
A fixed measure of polymer in particle form is packed into a hollow mold. The mould is usually made from cast aluminium or sheet steel material. The coloring intended for the finished 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 type of plastic manufacturing.

Pre-heating of the oven follows, and it can 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 locked and positioned within the oven.

2. The heat and fusion step.
Once inside the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly, about 20 revolutions per sixty seconds. The main thing that is essential at this moment is the period of time the mold will spend inside the oven. If it stays to long, the component will lose stability and durability, generating a faulty product. If it is removed from the oven too early, the polymer will not have flowed properly, which develops bubbles in the finished product.

3. Mould cooling.
When the component has sufficiently spent the enough of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it reduces slightly for ease of extraction from the mold. This is one more measure that depends upon a lot on the right timing, since rapid cooling decreases the material too fast, causing warping of the material.

4. The discharging or de-molding step.
As soon as the material inside te mould has cooled adequately, the person managing the operation can then remove the completed product from the mould. The process is repeated from the start, giving a number of identical products.

For more information on the different rotational molding options offered for the Bryan OH 43506, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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