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

rotational moulding-Seabrook-Rotational molding pertains to a plastic production solution that makes hollow stress-free products. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have varying shapes, sizes and colors. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing methods in that no pressure is needed. It also has few contenders when it involves the creation of large hollow items which are durable and inexpensive.There is a wide variety of product lines that are generated by this process including large water tanks, automobile materials, sophisticated molded medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in regards to type and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Seabrook NH 3874, 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 Molding-Seabrook-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 Seabrook 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 Rotomoulding Method in Detail

This moulding process has been used since earlier times for creatingvseverl items. Egyptians for instance, worked with rotational molding procedures in the of ceramics. The Swiss were also using this rotation method to generate hollow chocolate eggs. Some plastic product lines in the USA were developed using this procedure some time between 1940 and 1950. Given that it was looked at to be a rather slow-moving technique, the technique has however taken long to become popular

1. Mold readying.
A fixed volume of polymer in powder form is packed into a hollow mold. The mould is usually made from cast aluminium or sheet steel material. The colour intended for the finished item 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 manufacturing.

Preheating of the oven starts, 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 secured and placed within the oven.

2. The heating and fusion procedure.
Once inside the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The spinning is done gradually, about 20 rotations per min. Something that is critical at this point is the amount of time the mould will spend within the oven. If it stays to long, the component will lose stability and strength, creating a faulty item. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finished item.

3. Mold cooling.
When the product has completely spent the enough 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 a cool mist. When the component cools, it shrinks somewhat for ease of removal from the mold. This is another procedure that depends a lot on the right timing, since rapid cooling reduces the material too rapidly, causing bending of the item.

4. The un-loading or de-moulding step.
Once the material inside te mold has cooled effectively, the molder taking care of the operation can then take out the finalized item from the mold. The function is repeated from the start, making a series of similar products.

For more information on the different rotational rotomolding options offered for the Seabrook NH 3874 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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