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

rotomoulding-South Houston-Rotational molding pertains to a plastic manufacturing method that creates hollow stress-free products. The technique uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have various designs, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few rivals when it comes down to the production of large hollow products which are long lasting and inexpensive.There is a wide range of products that are generated by this process including big water tanks, automobile items, complex molded medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to 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 South Houston TX 77587, 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 rotocasting 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 Molded-South 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 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 South Houston 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 Rotomolding Method in Detail

This molding technique has been used since early times for creatingvseverl product lines. Egyptians for instance, employed roto-molding techniques in the creating of ceramics. The Swiss were also working with this rotation type to create hollow chocolate eggs. Some plastic products in the USA were developed using this technique some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of to be a somewhat slow process

1. Mould fitting.
A predetermined volume of polymer in particle form is packed into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The color needed for the end item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.

Preheating of the oven follows, 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 secured and installed within the oven.

2. The heating and fusion phase.
Once placed into the oven, the mold is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 rotations per sixty seconds. One thing that is essential at this point is the period of time the mold will spend within the oven. If it overstays, the product will lose stability and strength, making a weak item. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finished item.

3. Mould cooling.
When the material has sufficiently spent the enough 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 a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mold. This is one more step that depends upon a lot on the right timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The removing or de-moulding phase.
As soon as the material within te mould has cooled successfully, the person taking care of the procedure can then take out the finished product from the mould. The process is repeated from the start, giving a number of identical products.

For more information on the different rotational rotomolding options offered for the South Houston TX 77587 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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