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

rotational molding-Rockport-Rotational moulding refers to a plastic manufacturing solution that creates hollow stress-free products. The procedure relies on high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different designs, colors and sizes. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing techniques that no pressure is called for. It also has few rivals when it comes to the production of large hollow products which are long lasting and inexpensive.There is a wide variety of products that are created by this process including big water tanks, automobile products, sophisticated shaped medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in terms of design 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 Rockport TX 78381, 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-Rockport-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 Rockport 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 Rotomoulding Process in Detail

This molding operation has been used since earlier times for creatingvseverl product lines. Egyptians for example, worked with rotomoulding methods in the of ceramics. The Swiss were also using this rotation design to generate hollow chocolate eggs. Some plastic products in the USA were created using this method some time between 1940 and 1950. Because it was considered to be a basically slow approach, the system has however taken long to catch on

1. Mould preparation.
A fixed amount of polymer in grain form is packed into a hollow mould. The mould is usually built from cast aluminium or sheet steel material. The color needed 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 style of plastic production.

Pre-heating of the oven starts, 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 locked and inserted into the oven.

2. The heat and fusion phase.
Once inside the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 revolutions per min. The main thing that is essential at this point is the amount of time the mold will spend within the oven. If it stays to long, the component will lose stability and durability, making a poor product. If it is taken out from the oven prematurely, the polymer will not have liquefied correctly, which creates bubbles in the finalized item.

3. Mold cooling down.
When the product 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 component cools, it reduces somewhat for ease of extraction from the mold. This is an additional step that depends upon a lot on the ideal timing, since rapid cooling shrinks the material too quick, causing warping of the product.

4. The removing or de-molding phase.
When the material within te mold has cooled properly, the person handling the procedure can then extract the finished item from the mould. The process is repeated from the beginning, providing a number of similar items.

For more information on the different rotational rotomolding options offered for the Rockport TX 78381 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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