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

rotocasting-Holyoke-Rotational moulding pertains to a plastic production solution that generates hollow stress-free products. The technique relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a wide range of designs, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing procedures in that no pressure is needed. It also has few contenders when it pertains to the production of large hollow products which are long-lasting and inexpensive.There is a wide range of products that are generated by this process including large size water tanks, automobile materials, complex designed medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to design and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Holyoke CO 80734, 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 rotocasting 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-Holyoke-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 Holyoke 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 Rotomolding Method Components

This moulding operation has been used since ancient times for creatingvseverl product lines. Egyptians as an example, worked with rotational molding methods in the producing of ceramics. The Swiss were also utilizing this rotation type to make hollow chocolate eggs. Some plastic product lines 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 looked at as being a very slow-moving process

1. Mold prep work.
A predetermined measure of polymer in grain form is loaded into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel component. The color tone chosen for the final item 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 manufacturing.

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

2. The heating and fusion phase.
Once inside the oven, the mold is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly, about 20 spins per minute. Something that is crucial at this point is the amount of time the mold will spend inside the oven. If it overstays, the component will lose value and strength, generating a faulty product. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which produces bubbles in the finalized item.

3. Mold cooling down.
When the product has completely 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 a cool mist. When the product cools, it reduces a little for ease of extraction from the mold. This is an additional procedure that relies a lot on the correct timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The offloading or de-molding step.
Once the material inside te mold has cooled effectively, the person taking care of the procedure can then extract the finalized item from the mould. The function is repeated from the beginning, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Holyoke CO 80734 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 plastic manufacturing

Local Resources

Production Example
Google Map