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

rotational moulding-Lee-Rotational molding refers to a plastic manufacturing procedure that produces hollow stress-free product lines. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have several designs, sizes and colors. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing procedures that no pressure is required. It also has few contenders when it comes to the manufacture of large size hollow items which are long-lasting and inexpensive.There is a wide range of items that are created by this process including big water tanks, automobile products, complex designed medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in regards to design 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 Lee ME 4455, 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 rotomoulding 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-Lee-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 Lee 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 Roto-Molding Method Components

This molding method has been used since earlier times for creatingvseverl product lines. Egyptians for example, worked with rotomoulding techniques in the creating of ceramics. The Swiss were also applying this rotation style to make hollow chocolate eggs. Some plastic items in the USA were developed utilizing this approach some time between 1940 and 1950. The technique has however taken long to catch on because it was looked at as being a moderately slow process

1. Mold preparation.
A predetermined amount of polymer in powder form is packed into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel material. The colour needed for the finished goods 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 style of plastic production.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then secured and inserted into the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The rotation is done slowly, about 20 revolutions per min. Something that is vital at this moment is the period of time the mold will spend inside the oven. If it overstays, the component will lose stability and strength, making a faulty item. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which develops bubbles in the finalized product.

3. Mould cooling.
When the component has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the material cools, it reduces slightly for ease of removal from the mold. This is an additional measure that depends upon a lot on the ideal timing, since quick cooling decreases the material too fast, causing bending of the product.

4. The removing or de-moulding step.
Once the product within te mold has cooled properly, the person handling the operation can then remove the finished product from the mold. The procedure is repeated from the beginning, supplying a number of similar product lines.

For more information on the different rotational rotomolding options offered for the Lee ME 4455 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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