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rotomolding-Houston-Rotational moulding pertains to a plastic production practice that produces hollow stress-free items. The method uses high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a wide range of designs, sizes and colors. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing procedures because no pressure is involved. It also has few contenders when it involves the manufacture of large size hollow products which are long lasting and inexpensive.There is a wide range of items that are created by this process including big water tanks, automobile materials, complex molded medical items, leisure equipment, toys, canoes, industrial 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 Houston DE 19954, 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

Plastic Molding-Houston-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 Delaware 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 Houston Delaware 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 Procedure in Detail

This molding system has been used since early times for creatingvseverl products. Egyptians as an example, applied rotomoulding solutions in the of ceramics. The Swiss were also working with this rotation approach to make hollow chocolate eggs. Some plastic products in the USA were created using this approach some time between 1940 and 1950. Due to the fact that it was thought of to be a somewhat slow-moving system, the technique has however taken long to become popular

1. Mould readying.
A fixed measure of polymer in powder form is loaded into a hollow mould. The mould is usually made of cast aluminium or sheet steel substance. The color preferred for the final item is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic manufacturing.

Preheating of the oven starts, and it may 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 installed within the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly, about 20 rotations per min. Something that is crucial at this moment is the period of time the mold will spend within the oven. If it stays to long, the component will lose stability and strength, making a weak product. If it is removed from the oven too early, the polymer will not have melted properly, which creates bubbles in the finalized product.

3. Mould cooling down.
When the component has completely spent the enough 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 a cool mist. When the component cools, it shrinks slightly for ease of extraction from the mould. This is another measure that relies a lot on the ideal timing, since rapid cooling decreases the material too quickly, causing bending of the material.

4. The removing or de-moulding phase.
As soon as the material within te mold has cooled correctly, the person handling the procedure can then extract the finished product from the mold. The process is repeated from the beginning, making a number of similar items.

For more information on the different rotational rotomolding options offered for the Houston DE 19954 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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