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

rotomolding-Andover-Rotational molding pertains to a plastic production procedure that makes hollow stress-free items. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have a variety of shapes, colors and sizes. This method is also referred to 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 procedures that no pressure is required. It also has few rivals when it comes down to the creation of large hollow items which are resilient and inexpensive.There is a wide variety of items that are produced by this process including large size water tanks, automobile items, sophisticated shaped medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in regards to design 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 Andover NH 3216, 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 Products-Andover-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 Andover 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 Procedure in Detail

This molding technique has been used since ancient times for creatingvseverl products. Egyptians for instance, worked with roto-molding procedures in the producing of ceramics. The Swiss were also employing this rotation type to generate hollow chocolate eggs. Some plastic products in the USA were developed utilizing this method some time between 1940 and 1950. The technique has however taken long to take affect because it was looked at as being a rather slow-moving process

1. Mold prep work.
A fixed measure of polymer in powder form is filled into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel substance. The coloration wanted for the finished product 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 style of plastic assembly.

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 mold with the powdered polymer is then locked and inserted into the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done slowly and gradually, about 20 spins per min. One thing that is critical at this point is the amount of time the mold will spend inside the oven. If it overstays, the product will lose value and durability, producing a poor product. If it is extracted from the oven prematurely, the polymer will not have melted properly, which develops bubbles in the completed product.

3. Mold cooling down.
When the product has sufficiently spent the correct 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 a cool mist. When the material cools, it reduces a little for ease of extraction from the mold. This is another measure that depends upon a lot on the right timing, since rapid cooling reduces the material too quick, causing warping of the product.

4. The un-loading or de-molding phase.
Once the product inside te mould has cooled properly, the person managing the procedure can then take out the finished item from the mold. The technique is repeated from the beginning, providing a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Andover NH 3216 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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