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

roto-molding-Center Ossipee-Rotational molding pertains to a plastic production practice that produces hollow stress-free product lines. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different shapes, colors and sizes. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing processes because no pressure is called for. It also has few competitors when it comes down to the production of large size hollow products which are resilient and inexpensive.There is a wide variety of product lines that are developed by this process including large water tanks, automobile products, sophisticated designed medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Center Ossipee NH 3814, 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 rotocasting 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-Center Ossipee-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 Center Ossipee 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 Rotomolding Method Components

This moulding technique has been used since early times for creatingvseverl products. Egyptians for example, applied rotomoulding systems in the creating of ceramics. The Swiss were also employing this rotation type to create hollow chocolate eggs. Some plastic products in the USA were created using this approach some time between 1940 and 1950. Considering that it was thought of to be a very slow approach, the method has however taken long to catch on

1. Mould readying.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel component. The color tone preferred 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 engineering.

Pre-heating of the oven follows, and it can 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 inserted into the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done slowly, about 20 rotations per minute. Something that is essential at this point is the amount of time the mould will spend inside the oven. If it stays to long, the product will lose value and strength, making a poor item. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which develops bubbles in the completed product.

3. Mold cooling down.
When the material has sufficiently spent the right amount of time in the oven, it is then extracted 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 shrinks somewhat for ease of removal from the mould. This is an additional procedure that relies a lot on the right timing, since rapid cooling shrinks the material too quickly, causing warping of the material.

4. The un-loading or de-moulding step.
When the material within te mould has cooled correctly, the person taking care of the operation can then remove the finalized product from the mold. The process is repeated from the start, giving a series of similar products.

For more information on the different rotational rotomolding options offered for the Center Ossipee NH 3814 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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