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

rotational moulding-Line Lexington-Rotational molding pertains to a plastic production method that creates hollow stress-free product lines. The technique uses high temperatures and bi axial rotation to follow up with seamless, one piece objects that have several shapes, colors and sizes. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing methods because no pressure is needed. It also has few competitors when it comes down to the creation of large hollow products which are resilient and inexpensive.There is a wide variety of product lines that are generated by this process including large size water tanks, automobile materials, sophisticated designed 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 develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Line Lexington PA 18932, 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

Plastic Products-Line Lexington-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 Pennsylvania 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 Line Lexington Pennsylvania 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 moulding technique has been used since ancient times for creatingvseverl items. Egyptians as an example, employed rotomoulding methods in the of ceramics. The Swiss were also applying this rotation technique to generate hollow chocolate eggs. Some plastic items in the USA were developed using this technique some time between 1940 and 1950. Given that it was considered to be a basically slow-moving system, the technique has however taken long to catch on

1. Mold preparation.
A fixed amount of polymer in grain form is loaded into a hollow mold. The mold is usually made of cast aluminium or sheet steel component. The colour chosen for the final 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 production.

Preheating of the oven follows, and it can 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 locked and positioned inside the oven.

2. The heating up and fusion phase.
Once inside the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done gradually, about 20 rotations per minute. One thing that is crucial at this point is the period of time the mould will spend inside the oven. If it overstays, the component will lose stability and durability, producing a poor product. If it is extracted from the oven prematurely, the polymer will not have flowed properly, which develops bubbles in the completed product.

3. Mold cooling.
When the component has completely 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 a cool mist. When the component cools, it shrinks a little for ease of removal from the mould. This is one more step that depends upon a lot on the ideal timing, since quick cooling decreases the material too fast, causing warping of the item.

4. The unloading or de-moulding phase.
Once the product inside te mold has cooled correctly, the person managing the process can then extract the completed product from the mould. The procedure is repeated from the beginning, giving a number of identical products.

For more information on the different rotational molding options offered for the Line Lexington PA 18932 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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