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

rotational moulding-South Pasadena-Rotational moulding refers to a plastic production technique that produces hollow stress-free product lines. The procedure relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different designs, colors and sizes. This technique is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The benefit that makes this different from other plastic manufacturing methods in that no pressure is called for. It also has few competitors when it comes to the production of large size hollow products which are durable and inexpensive.There is a variety of products that are created by this process including big water tanks, automobile materials, complex designed medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of style and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in South Pasadena CA 91030, 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

Custom Molding-South Pasadena-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 South Pasadena 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 Rotomolding Procedure in Detail

This moulding procedure has been used since early times for creatingvseverl items. Egyptians as an example, utilized rotational molding solutions in the creating of ceramics. The Swiss were also working with this rotation method to create hollow chocolate eggs. Some plastic items in the USA were created utilizing this technique some time between 1940 and 1950. The process has however taken long to catch on because it was thought of as being a relatively slow process

1. Mold prep work.
A predetermined quantity of polymer in grain form is filled into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel material. The color intended for the final product 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 design of plastic assembly.

Pre-heating of the oven starts, and it may 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 placed inside the oven.

2. The heat and fusion process.
Once inside the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done gradually, about 20 revolutions per min. Something that is important at this moment is the amount of time the mold will spend inside the oven. If it overstays, the material will lose value and strength, making a faulty item. If it is taken out from the oven prematurely, the polymer will not have melted properly, which generates bubbles in the completed item.

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

4. The offloading or de-molding step.
Once the product inside te mould has cooled successfully, the person managing the procedure can then extract the finalized item from the mould. The function is repeated from the beginning, giving a number of identical product lines.

For more information on the different rotational rotomolding options offered for the South Pasadena CA 91030 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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