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

rotocasting-Bethany-Rotational molding refers to a plastic production solution that produces hollow stress-free items. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have many different shapes, colors and sizes. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing processes in that no pressure is involved. It also has few rivals when it comes to the creation of large size hollow products which are long-lasting and inexpensive.There is a wide range of items that are generated by this process including large size water tanks, automobile products, complex designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in regards to type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bethany CT 6524, 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 rotomoulding 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 Molding-Bethany-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 Bethany 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 Process Components

This moulding method has been used since ancient times for creatingvseverl items. Egyptians for example, worked with rotomoulding systems in the producing of ceramics. The Swiss were also employing this rotation design to generate hollow chocolate eggs. Some plastic product lines in the USA were created using this procedure some time between 1940 and 1950. Considering that it was looked at to be a very slow procedure, the method has however taken long to become popular

1. Mold fitting.
A predetermined amount of polymer in powder form is loaded into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel material. The coloring preferred 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 assembly.

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 mould with the powdered polymer is then locked and positioned within the oven.

2. The heating and fusion procedure.
Once within the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 rotations per min. Something that is essential at this point is the period of time the mold will spend inside the oven. If it overstays, the material will lose stability and strength, producing a weak item. If it is extracted from the oven too early, the polymer will not have liquefied properly, which creates bubbles in the finished item.

3. Mould cooling.
When the material 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 creates a cool mist. When the component cools, it shrinks a little for ease of removal from the mould. This is an additional procedure that relies a lot on the correct timing, since rapid cooling reduces the material too rapidly, causing warping of the item.

4. The unloading or de-molding phase.
Once the material within te mould has cooled correctly, the molder taking care of the procedure can then take out the finalized product from the mould. The process is repeated from the beginning, supplying a number of exact products.

For more information on the different rotational rotomolding options offered for the Bethany CT 6524 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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