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

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

The feature that makes this different from other plastic manufacturing methods that no pressure is needed. It also has few rivals when it comes down to the manufacture of large hollow items which are resilient and inexpensive.There is a wide range of products that are produced by this process including large size water tanks, automobile materials, complex shaped medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in terms of 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 Hartman CO 81043, 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-Hartman-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 Colorado 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 Hartman Colorado 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 moulding system has been used since early times for creatingvseverl items. Egyptians for example, worked with rotocasting systems in the producing of ceramics. The Swiss were also employing this rotation format to create hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this technique some time between 1940 and 1950. Due to the fact that it was looked at to be a rather slow-moving technique, the system has however taken long to become popular

1. Mold fitting.
A predetermined amount of polymer in powder form is packed into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel substance. The coloration chosen for the finished goods is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic engineering.

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 mold with the powdered polymer is then sealed and put into the oven.

2. The heat and fusion step.
Once inside the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done slowly and gradually, about 20 revolutions per minute. The main thing that is critical at this moment is the amount of time the mold will spend within the oven. If it stays to long, the material will lose stability and durability, making a poor product. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which develops bubbles in the completed item.

3. Mold cooling.
When the material has completely 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 material cools, it reduces slightly for ease of removal from the mold. This is yet another measure that relies a lot on the right timing, since rapid cooling decreases the material too rapidly, causing warping of the product.

4. The removing or de-moulding phase.
Once the material inside te mold has cooled successfully, the person managing the operation can then extract the finished item from the mold. The technique is repeated from the beginning, providing a number of identical product lines.

For more information on the different rotational rotomolding options offered for the Hartman CO 81043 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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