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

rotomolding-York-Rotational molding refers to a plastic production solution that makes hollow stress-free items. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have many different designs, colors and sizes. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing methods in that no pressure is involved. It also has few rivals when it comes to the creation of large size hollow items which are long lasting and inexpensive.There is a wide variety of product lines that are developed by this process including large water tanks, automobile items, complex shaped medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the flexibility in regards to design and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in York ME 3909, 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 Manufacturing-York-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 Maine 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 York Maine 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 Components

This moulding method has been used since earlier times for creatingvseverl product lines. Egyptians for instance, worked with rotomoulding procedures in the making of ceramics. The Swiss were also working with this rotation method to generate hollow chocolate eggs. Some plastic product lines in the USA were developed using this approach some time between 1940 and 1950. The technique has however taken very long to take affect because it was looked at as being a somewhat slow-moving process

1. Mold prep work.
A fixed quantity of polymer in grain form is filled into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel substance. The coloring chosen for the end 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 type of plastic production.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then secured and positioned inside the oven.

2. The heating and fusion process.
Once within the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done slowly, about 20 rotations per minute. Something that is critical at this moment is the period of time the mould will spend inside the oven. If it overstays, the material will lose value and durability, creating a poor product. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which generates bubbles in the finalized item.

3. Mould cooling.
When the component has sufficiently spent the right 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 generates a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is one more procedure that depends a lot on the ideal timing, since quick cooling decreases the material too quickly, causing bending of the item.

4. The removing or de-moulding phase.
As soon as the product within te mould has cooled correctly, the person taking care of the operation can then remove the finished product from the mold. The function is repeated from the beginning, making a number of identical items.

For more information on the different rotational rotomolding options offered for the York ME 3909 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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