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

rotomoulding-South Grafton-Rotational moulding refers to a plastic manufacturing solution that makes hollow stress-free product lines. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various designs, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing techniques in that no pressure is involved. It also has few competitors when it pertains to the creation of large size hollow items which are durable and inexpensive.There is a variety of product lines that are generated by this process including large water tanks, automobile items, intricate designed medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of 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 South Grafton MA 1560, 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

Plastic Products-South Grafton-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 Massachusetts 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 South Grafton Massachusetts 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 Process in Detail

This molding technique has been used since earlier times for creatingvseverl products. Egyptians for example, worked with roto-molding systems in the creating of ceramics. The Swiss were also making use of this rotation type to generate hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this procedure some time between 1940 and 1950. The process has however taken long to catch on because it was thought of as being a somewhat slow-moving process

1. Mold readying.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel component. The coloring preferred for the end item 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 design of plastic production.

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 secured and put inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 rotations per sixty seconds. The main thing that is crucial at this moment is the amount of time the mold will spend inside the oven. If it overstays, the product will lose value and durability, creating a weak item. If it is removed from the oven too early, the polymer will not have flowed properly, which develops bubbles in the completed product.

3. Mold cooling down.
When the material has sufficiently 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 product 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 decreases the material too quick, causing warping of the material.

4. The un-loading or de-molding step.
When the component inside te mould has cooled successfully, the molder handling the process can then take out the finalized item from the mould. The procedure is repeated from the start, giving a series of exact products.

For more information on the different rotational rotomolding options offered for the South Grafton MA 1560 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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