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

rotomolding-Catonsville-Rotational molding pertains to a plastic manufacturing solution that makes hollow stress-free items. The technique relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various shapes, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing methods that no pressure is called for. It also has few competitors when it involves the production of large hollow items which are resilient and inexpensive.There is a wide variety of product lines that are developed by this process including big water tanks, automobile products, sophisticated shaped medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility 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 Catonsville MD 21228, 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-Catonsville-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 Catonsville 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 Rotomolding Procedure in Detail

This molding procedure has been used since earlier times for creatingvseverl product lines. Egyptians for example, employed rotocasting methods in the making of ceramics. The Swiss were also utilizing this rotation style to create hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this approach some time between 1940 and 1950. Considering that it was regarded to be a very slow procedure, the process has however taken long to catch on

1. Mold fitting.
A predetermined amount of polymer in particle form is loaded into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel component. The colour wanted for the end goods 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 production.

Preheating 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 mould with the powdered polymer is then secured and positioned inside the oven.

2. The heat and fusion step.
Once inside the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done slowly, about 20 spins per minute. One thing that is essential at this moment is the period of time the mold will spend within the oven. If it stays to long, the material will lose value and strength, producing a poor item. If it is removed from the oven too early, the polymer will not have flowed properly, which develops bubbles in the finalized product line.

3. Mold cooling down.
When the component has sufficiently spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it shrinks slightly for ease of extraction from the mold. This is an additional step that relies a lot on the right timing, since quick cooling decreases the material too quickly, causing warping of the item.

4. The unloading or de-moulding step.
When the product inside te mold has cooled successfully, the molder handling the procedure can then extract the finalized item from the mould. The technique is repeated from the start, supplying a series of similar items.

For more information on the different rotational rotomolding options offered for the Catonsville MD 21228 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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