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

rotational molding-Crown-Rotational molding refers to a plastic production method that produces hollow stress-free items. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various designs, colors and sizes. This technique is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing techniques in that no pressure is called for. It also has few rivals when it involves the production of sizable hollow products which are resilient and inexpensive.There is a variety of product lines that are created by this process including large size water tanks, automobile products, intricate molded medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility in terms of style and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Crown PA 16220, 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-Crown-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 Crown 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 Rotomolding Procedure in Detail

This molding technique has been used since earlier times for creatingvseverl items. Egyptians as an example, utilized rotational molding techniques in the making of ceramics. The Swiss were also making use of this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this approach some time between 1940 and 1950. The process has however taken very long to catch on because it was looked at to be a somewhat slow process

1. Mould prep work.
A predetermined volume of polymer in powder form is filled into a hollow mold. The mold is usually constructed from cast aluminium or sheet steel material. The coloration chosen for the end 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 locked and put within the oven.

2. The heating up and fusion process.
Once within the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The spinning is done gradually, about 20 spins per sixty seconds. The main thing that is essential at this moment is the period of time the mould will spend within the oven. If it overstays, the material will lose value and strength, creating a weak product. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which develops bubbles in the finished product.

3. Mould cooling down.
When the product has completely spent the correct amount 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 reduces somewhat for ease of extraction from the mold. This is an additional step that relies a lot on the correct timing, since rapid cooling decreases the material too quickly, causing warping of the product.

4. The un-loading or de-molding phase.
When the product inside te mold has cooled properly, the molder handling the procedure can then extract the finalized item from the mould. The process is repeated from the beginning, supplying a number of similar product lines.

For more information on the different rotational molding options offered for the Crown PA 16220 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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