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

roto-molding-Robert Lee-Rotational molding pertains to a plastic manufacturing method that produces hollow stress-free product lines. The technique depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of designs, colors and sizes. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing processes that no pressure is required. It also has few contenders when it comes down to the production of large size hollow products which are resilient and inexpensive.There is a wide variety of items that are created by this process including large size water tanks, automobile materials, complex molded medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of 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 Robert Lee TX 76945, 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 moulding 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

Custom Molding-Robert Lee-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 Texas 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 Robert Lee Texas 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 Components

This molding method has been used since early times for creatingvseverl product lines. Egyptians for instance, applied rotational molding methods in the producing of ceramics. The Swiss were also employing this rotation method to generate hollow chocolate eggs. Some plastic items in the USA were made using this approach some time between 1940 and 1950. Given that it was thought of to be a basically slow technique, the process has however taken long to catch on

1. Mold preparation.
A fixed volume of polymer in grain form is loaded into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel component. The coloring chosen for the final 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 type of plastic engineering.

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 placed within the oven.

2. The heat and fusion process.
Once within the oven, the mold is revolved 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. The main thing that is important at this moment is the amount of time the mould will spend inside the oven. If it overstays, the material will lose value and durability, generating a weak product. If it is extracted from the oven too early, the polymer will not have liquefied properly, which creates bubbles in the finalized product.

3. Mold cooling down.
When the component has completely spent the correct amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mould. This is yet another procedure that relies a lot on the correct timing, since quick cooling shrinks the material too quick, causing warping of the item.

4. The removing or de-moulding phase.
Once the component inside te mould has cooled successfully, the person taking care of the process can then take out the completed item from the mold. The function is repeated from the start, giving a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Robert Lee TX 76945 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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