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

rotational moulding-Hiram-Rotational molding refers to a plastic production solution that generates hollow stress-free items. The technique utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have many different forms, sizes and colors. This technique is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few contenders when it comes to the production of sizable hollow products which are durable and inexpensive.There is a variety of products that are generated by this process including big water tanks, automobile products, sophisticated shaped medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility 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 Hiram ME 4041, 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 roto-molding 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

Custom Molded-Hiram-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 Maine 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 Hiram Maine 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 system has been used since ancient times for creatingvseverl product lines. Egyptians for example, utilized rotational molding procedures in the manufacturing of ceramics. The Swiss were also working with this rotation design to generate hollow chocolate eggs. Some plastic items in the USA were created using this method some time between 1940 and 1950. The process has however taken long to take affect because it was considered as being a moderately slow-moving process

1. Mould prep work.
A fixed amount of polymer in particle form is loaded into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel component. The color desired for the finished goods 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 style of plastic manufacturing.

Pre-heating of the oven follows, and it may 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 within the oven.

2. The heat and fusion phase.
Once inside the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The turning is done slowly, about 20 spins per min. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it stays to long, the component will lose stability and durability, producing a weak product. If it is extracted from the oven too early, the polymer will not have melted properly, which creates bubbles in the finished item.

3. Mould cooling.
When the component has sufficiently spent the correct amount 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 generates a cool mist. When the component cools, it shrinks somewhat for ease of extraction from the mold. This is an additional step that relies a lot on the right timing, since rapid cooling reduces the material too quickly, causing warping of the material.

4. The removing or de-moulding phase.
As soon as the product inside te mold has cooled successfully, the person taking care of the process can then take out the completed product from the mould. The function is repeated from the start, making a series of exact items.

For more information on the different rotational rotomolding options offered for the Hiram ME 4041 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to custom molded

Local Resources

Production Example
Google Map