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

rotomoulding-Middleton-Rotational molding pertains to a plastic production procedure that produces hollow stress-free items. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different designs, sizes and colors. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing methods in that no pressure is called for. It also has few rivals when it pertains to the creation of large hollow items which are long lasting and inexpensive.There is a wide variety of product lines that are developed by this process including large size water tanks, automobile items, intricate molded medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Middleton MA 1949, 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 Manufacturing-Middleton-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 Middleton 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 products. Egyptians for example, employed rotomoulding methods in the making of ceramics. The Swiss were also employing this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were created using this procedure some time between 1940 and 1950. Since it was considered to be a somewhat slow-moving system, the system has however taken long to become popular

1. Mould readying.
A predetermined quantity of polymer in particle form is filled into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel substance. The coloring wanted for the end product is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.

Pre-heating of the oven starts, 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 placed within the oven.

2. The heat and fusion process.
Once placed into the oven, the mold is spun on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done gradually, about 20 spins per sixty seconds. One thing that is crucial at this point is the period of time the mold will spend within the oven. If it overstays, the component will lose stability and durability, creating a faulty item. If it is extracted from the oven prematurely, the polymer will not have melted properly, which creates bubbles in the completed product.

3. Mold cooling down.
When the component has completely 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 creates a cool mist. When the material cools, it reduces a little for ease of removal from the mold. This is one more measure that depends a lot on the correct timing, since rapid cooling decreases the material too quickly, causing warping of the material.

4. The discharging or de-molding step.
When the material inside te mould has cooled correctly, the molder managing the operation can then extract the finished product from the mould. The function is repeated from the start, supplying a series of identical product lines.

For more information on the different rotational rotomolding options offered for the Middleton MA 1949 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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