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

rotomoulding-Niwot-Rotational molding refers to a plastic production practice that makes hollow stress-free product lines. The method relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have varying designs, sizes and colors. This technique 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 that no pressure is needed. It also has few competitors when it comes down to the creation of sizable hollow items which are long lasting and inexpensive.There is a wide range of products that are created by this process including large size water tanks, automobile items, complex shaped medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in regards to style 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 Niwot CO 80544, 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 rotational molding 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-Niwot-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 Colorado 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 Niwot Colorado 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 Components

This molding process has been used since earlier times for creatingvseverl products. Egyptians as an example, applied rotomoulding procedures in the producing of ceramics. The Swiss were also employing this rotation technique to make hollow chocolate eggs. Some plastic products in the USA were developed using this approach some time between 1940 and 1950. Given that it was thought of to be a rather slow procedure, the technique has however taken long to catch on

1. Mold prep work.
A fixed quantity of polymer in grain form is filled into a hollow mold. The mould is usually made of cast aluminium or sheet steel material. The coloring preferred for the finished goods 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 type of plastic engineering.

Pre-heating 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 heat and fusion procedure.
Once inside the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The spinning is done gradually, about 20 rotations per sixty seconds. Something that is critical at this moment is the amount of time the mould 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 prematurely, the polymer will not have flowed properly, which generates bubbles in the finalized item.

3. Mold cooling.
When the product has sufficiently spent the enough of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it shrinks somewhat for ease of removal from the mould. This is yet another step that relies a lot on the right timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The discharging or de-molding step.
As soon as the material inside te mold has cooled adequately, the molder taking care of the operation can then take out the completed item from the mold. The procedure is repeated from the start, providing a series of identical products.

For more information on the different rotational rotomolding options offered for the Niwot CO 80544 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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