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

roto-molding-Freeport-Rotational molding pertains to a plastic manufacturing technique that creates hollow stress-free items. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have a variety of designs, sizes and colors. This procedure 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 unique from other plastic manufacturing techniques in that no pressure is involved. It also has few rivals when it comes down to the production of sizable hollow products which are long-lasting and inexpensive.There is a wide range of product lines that are created by this process including big water tanks, automobile products, intricate shaped medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in terms of design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Freeport TX 77541, 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 Manufacturing-Freeport-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 Freeport 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 system has been used since ancient times for creatingvseverl products. Egyptians as an example, applied roto-molding systems in the making of ceramics. The Swiss were also employing this rotation type to make hollow chocolate eggs. Some plastic products in the USA were manufactured using this procedure some time between 1940 and 1950. Considering that it was viewed to be a basically slow process, the approach has however taken long to become popular

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 material. The color desired for the finished item 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 type of plastic assembly.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then secured and placed inside the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per sixty seconds. Something that is essential at this moment is the period of time the mold will spend within the oven. If it stays to long, the product will lose stability and strength, producing a poor item. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which produces bubbles in the finished item.

3. Mould cooling down.
When the material has sufficiently spent the enough 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 generates a cool mist. When the product cools, it reduces a little for ease of removal from the mould. This is another procedure that depends a lot on the right timing, since rapid cooling shrinks the material too quickly, causing warping of the item.

4. The discharging or de-molding step.
Once the component inside te mould has cooled properly, the molder managing the process can then take out the finalized item from the mould. The process is repeated from the start, providing a number of identical products.

For more information on the different rotational rotomolding options offered for the Freeport TX 77541 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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