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

rotational molding-Arlington-Rotational molding refers to a plastic manufacturing practice that makes hollow stress-free items. The method relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have varying forms, colors and sizes. This method is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing methods in that no pressure is needed. It also has few contenders when it pertains to the production of large hollow products which are durable and inexpensive.There is a wide variety of items that are developed by this process including large water tanks, automobile materials, complex molded medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to style 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 Arlington MA 2174, 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-Arlington-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 Arlington 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 Rotomolding Process in Detail

This moulding procedure has been used since ancient times for creatingvseverl items. Egyptians as an example, applied rotocasting procedures in the of ceramics. The Swiss were also using this rotation method to create hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this procedure some time between 1940 and 1950. Because it was regarded to be a rather slow procedure, the approach has however taken long to catch on

1. Mould preparation.
A predetermined quantity of polymer in grain form is packed into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel substance. The color desired for the finished 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 format of plastic production.

Pre-heating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then locked and put into the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done slowly, about 20 revolutions per min. Something that is crucial at this point is the period of time the mold will spend within the oven. If it overstays, the product will lose value and durability, producing a weak product. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the finalized product line.

3. Mold 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 material cools, it shrinks a little for ease of removal from the mould. This is yet another measure that depends a lot on the correct timing, since quick cooling reduces the material too fast, causing bending of the item.

4. The unloading or de-moulding step.
As soon as the product inside te mold has cooled correctly, the person managing the procedure can then extract the finalized item from the mold. The procedure is repeated from the beginning, providing a number of exact items.

For more information on the different rotational rotomolding options offered for the Arlington MA 2174 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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