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

rotomoulding-Mc Henry-Rotational molding pertains to a plastic production technique that generates hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have a wide range of forms, sizes and colors. This method is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing processes in that no pressure is needed. It also has few competitors when it comes down to the production of large hollow products which are long-lasting and inexpensive.There is a variety of product lines that are developed by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in regards to type 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 Mc Henry MD 21541, 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 Products-Mc Henry-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 Maryland 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 Mc Henry Maryland 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 Method in Detail

This moulding method has been used since earlier times for creatingvseverl products. Egyptians for instance, utilized rotocasting methods in the making of ceramics. The Swiss were also employing this rotation type to create hollow chocolate eggs. Some plastic products in the USA were manufactured utilizing this procedure some time between 1940 and 1950. Since it was regarded to be a relatively slow system, the technique has however taken long to catch on

1. Mould fitting.
A predetermined volume of polymer in grain form is loaded into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel material. The coloration chosen for the finished product 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 design of plastic engineering.

Pre-heating of the oven starts, 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 placed into the oven.

2. The heating up and fusion phase.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 spins per sixty seconds. The main thing that is essential at this moment is the amount of time the mould will spend inside the oven. If it stays to long, the product will lose value and strength, producing a poor product. If it is extracted from the oven too early, the polymer will not have melted properly, which creates bubbles in the finished product.

3. Mould cooling down.
When the component has sufficiently spent the right amount 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 generates a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mould. This is another procedure that depends upon a lot on the right timing, since quick cooling reduces the material too rapidly, causing warping of the product.

4. The un-loading or de-molding step.
As soon as the component inside te mold has cooled successfully, the molder managing the process can then extract the completed product from the mould. The technique is repeated from the beginning, supplying a series of identical items.

For more information on the different rotational rotomolding options offered for the Mc Henry MD 21541 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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