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

rotomoulding-Twin Mountain-Rotational molding pertains to a plastic production technique that creates hollow stress-free product lines. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have different designs, sizes and colors. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing methods in that no pressure is required. It also has few competitors when it involves the production of sizable hollow products which are long lasting and inexpensive.There is a variety of items that are produced by this process including large size water tanks, automobile materials, sophisticated shaped medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in terms of 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 Twin Mountain NH 3595, 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 rotomolding 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-Twin Mountain-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 Twin Mountain 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 Process in Detail

This molding process has been used since ancient times for creatingvseverl items. Egyptians for example, applied rotational molding methods in the producing of ceramics. The Swiss were also utilizing this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were created using this procedure some time between 1940 and 1950. The procedure has however taken long to take affect because it was thought of as being a somewhat slow-moving process

1. Mold prep work.
A fixed measure of polymer in powder form is packed into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel material. The coloration needed for the final item is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic manufacturing.

Pre-heating of the oven starts, 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 locked and positioned into the oven.

2. The heat and fusion process.
Once placed into the oven, the mould is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The turning is done slowly, about 20 rotations per sixty seconds. One thing that is critical at this point is the amount of time the mold will spend within the oven. If it stays to long, the component will lose value and strength, generating a weak item. If it is removed from the oven too early, the polymer will not have melted correctly, which develops bubbles in the finished item.

3. Mold cooling down.
When the product has sufficiently spent the right 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 creates a cool mist. When the component cools, it reduces slightly for ease of removal from the mold. This is another procedure that depends a lot on the ideal timing, since quick cooling decreases the material too fast, causing bending of the material.

4. The discharging or de-molding step.
As soon as the component within te mould has cooled properly, the person managing the operation can then take out the completed item from the mold. The function is repeated from the beginning, providing a number of exact items.

For more information on the different rotational rotomolding options offered for the Twin Mountain NH 3595 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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