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

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

The benefit that makes this unique from other plastic manufacturing techniques because no pressure is involved. It also has few rivals when it pertains to the manufacture of large size hollow products which are long lasting and inexpensive.There is a wide range of items that are developed by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of style 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 Colebrook CT 6021, 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 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

Plastic Manufacturing-Colebrook-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 Connecticut 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 Colebrook Connecticut 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 Procedure in Detail

This molding system has been used since early times for creatingvseverl product lines. Egyptians for instance, worked with rotomoulding methods in the making of ceramics. The Swiss were also applying this rotation type to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this method some time between 1940 and 1950. Considering that it was viewed to be a somewhat slow system, the technique has however taken long to become popular

1. Mould preparation.
A predetermined measure of polymer in grain form is filled into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel material. The coloration 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 style of plastic engineering.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then locked and positioned within the oven.

2. The heating and fusion procedure.
Once within the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done slowly, about 20 rotations per min. One thing that is crucial at this point is the period of time the mould will spend inside the oven. If it overstays, the component will lose stability and durability, generating a weak product. If it is taken out from the oven prematurely, the polymer will not have melted correctly, which develops bubbles in the finalized product.

3. Mould cooling.
When the product has sufficiently spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it reduces a little for ease of removal from the mould. This is one more procedure that relies a lot on the right timing, since rapid cooling shrinks the material too fast, causing warping of the item.

4. The un-loading or de-molding step.
When the material within te mold has cooled adequately, the molder taking care of the process can then remove the finished product from the mould. The function is repeated from the start, making a series of similar products.

For more information on the different rotational rotomolding options offered for the Colebrook CT 6021 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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