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

rotomolding-Defiance-Rotational moulding refers to a plastic production method that generates hollow stress-free items. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have various shapes, colors and sizes. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing methods that no pressure is involved. It also has few contenders when it pertains to the manufacture of sizable hollow items which are long lasting and inexpensive.There is a wide range of product lines that are produced by this process including big water tanks, automobile items, sophisticated shaped medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility 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 Defiance OH 43512, 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 roto-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

Custom Molded-Defiance-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 Ohio 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 Defiance Ohio 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 Roto-Molding Procedure Components

This molding operation has been used since ancient times for creatingvseverl product lines. Egyptians as an example, utilized roto-molding solutions in the producing of ceramics. The Swiss were also applying this rotation method to make hollow chocolate eggs. Some plastic products in the USA were made utilizing this method some time between 1940 and 1950. The process has however taken long to take affect because it was looked at as being a moderately slow process

1. Mold prep work.
A predetermined volume 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 chosen for the end goods 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 engineering.

Preheating of the oven follows, 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 positioned inside the oven.

2. The heat and fusion step.
Once inside the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done slowly and gradually, about 20 revolutions per sixty seconds. The main thing that is crucial at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the component will lose value and strength, producing a weak product. If it is extracted from the oven too early, the polymer will not have liquefied properly, which generates bubbles in the completed item.

3. Mold cooling.
When the material has completely 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 a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is one more measure that depends a lot on the ideal timing, since quick cooling decreases the material too quickly, causing bending of the item.

4. The unloading or de-molding phase.
Once the component inside te mould has cooled correctly, the person handling the procedure can then take out the completed product from the mould. The procedure is repeated from the start, providing a number of exact items.

For more information on the different rotational molding options offered for the Defiance OH 43512, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to custom molding

Local Resources

Process Example
Google Map