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

rotomolding-Patterson-Rotational moulding refers to a plastic manufacturing practice that produces hollow stress-free product lines. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece objects that have various shapes, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing processes in that no pressure is called for. It also has few contenders when it involves the creation of large hollow products which are long-lasting and inexpensive.There is a variety of products that are produced by this process including large size water tanks, automobile products, sophisticated shaped medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in terms of design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Patterson CA 95363, 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-Patterson-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 California 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 Patterson California 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 Components

This moulding operation has been used since ancient times for creatingvseverl items. Egyptians as an example, applied roto-molding procedures in the making of ceramics. The Swiss were also employing this rotation design to create hollow chocolate eggs. Some plastic items in the USA were made utilizing this technique some time between 1940 and 1950. Because it was considered to be a rather slow-moving technique, the technique has however taken long to catch on

1. Mold prep work.
A fixed volume of polymer in grain form is packed into a hollow mold. The mould is usually made of cast aluminium or sheet steel component. The color tone chosen for the final 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 format of plastic engineering.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then locked and installed within the oven.

2. The heat and fusion procedure.
Once within the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The spinning is done slowly, about 20 spins per sixty seconds. Something that is critical at this point is the period of time the mould will spend inside the oven. If it overstays, the material will lose value and strength, generating a poor item. If it is taken out from the oven too early, the polymer will not have flowed properly, which generates bubbles in the finalized product line.

3. Mold cooling down.
When the product has sufficiently spent the right amount 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 material cools, it shrinks slightly for ease of extraction from the mold. This is an additional measure that depends a lot on the correct timing, since rapid cooling shrinks the material too fast, causing bending of the material.

4. The un-loading or de-molding step.
As soon as the product within te mold has cooled effectively, the molder taking care of the process can then remove the finished product from the mold. The technique is repeated from the start, giving a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Patterson CA 95363 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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