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

rotational moulding-North Branch-Rotational molding refers to a plastic manufacturing solution that generates hollow stress-free items. The procedure relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have varying designs, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing techniques because no pressure is called for. It also has few contenders when it comes to the production of large hollow products which are resilient and inexpensive.There is a wide variety of products that are developed by this process including large size water tanks, automobile materials, intricate molded medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in North Branch MI 48461, 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 molding 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-North Branch-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 Michigan 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 North Branch Michigan 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 Process Components

This moulding system has been used since early times for creatingvseverl product lines. Egyptians for instance, employed roto-molding techniques in the of ceramics. The Swiss were also using this rotation design to make hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this procedure some time between 1940 and 1950. The procedure has however taken very long to take affect because it was thought of to be a somewhat slow-moving process

1. Mould readying.
A fixed quantity of polymer in grain form is filled into a hollow mold. The mould is usually made from cast aluminium or sheet steel material. The coloring desired 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.

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

2. The heating and fusion procedure.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done gradually, about 20 revolutions per minute. One thing that is essential at this point is the period of time the mold will spend inside the oven. If it overstays, the product will lose value and strength, creating a weak item. If it is removed from the oven prematurely, the polymer will not have flowed properly, which produces bubbles in the finished product line.

3. Mold cooling down.
When the material has sufficiently spent the right amount 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 creates a cool mist. When the component cools, it reduces a little for ease of extraction from the mould. This is one more step that depends a lot on the correct timing, since rapid cooling reduces the material too quick, causing warping of the item.

4. The unloading or de-moulding step.
Once the material within te mold has cooled properly, the molder managing the process can then take out the completed item from the mold. The technique is repeated from the start, making a number of similar items.

For more information on the different rotational molding options offered for the North Branch MI 48461, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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