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

rotational moulding-Weare-Rotational molding refers to a plastic manufacturing practice that makes hollow stress-free product lines. The method relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a wide range of forms, colors and sizes. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing processes that no pressure is called for. It also has few contenders when it involves the creation of large hollow products which are durable and inexpensive.There is a variety of product lines that are generated by this process including large water tanks, automobile materials, intricate molded medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to 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 Weare NH 3281, 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 Molding-Weare-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 New Hampshire 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 Weare New Hampshire 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 in Detail

This moulding technique has been used since earlier times for creatingvseverl products. Egyptians as an example, worked with roto-molding techniques in the manufacturing of ceramics. The Swiss were also making use of this rotation method to generate hollow chocolate eggs. Some plastic products in the USA were manufactured utilizing this approach some time between 1940 and 1950. The procedure has however taken long to catch on because it was looked at as being a somewhat slow-moving process

1. Mold fitting.
A fixed measure of polymer in powder form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel component. The colour intended for the final item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic engineering.

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

2. The heating and fusion process.
Once inside the oven, the mold is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per minute. One thing that is essential at this moment is the period of time the mold will spend within the oven. If it overstays, the component will lose stability and strength, making a poor product. If it is taken out from the oven too early, the polymer will not have flowed properly, which generates bubbles in the finalized item.

3. Mould cooling.
When the material has completely 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 a cool mist. When the material cools, it shrinks a little for ease of removal from the mould. This is another step that relies a lot on the ideal timing, since quick cooling shrinks the material too quickly, causing bending of the material.

4. The removing or de-molding phase.
As soon as the material within te mould has cooled adequately, the molder taking care of the operation can then extract the finalized product from the mould. The function is repeated from the beginning, providing a series of exact products.

For more information on the different rotational rotomolding options offered for the Weare NH 3281 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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