Looking for rotational molding alternatives for Maryland? Want affordable custom plastic molding that is cost effective for Deale area? Then give us a call at our toll free number 866-971-7861 or request a quote today!
Rotational moulding pertains to a plastic production solution that produces hollow stress-free product lines. The function relies on high temperatures and bi axial rotation to follow up with seamless, one piece products that have several forms, sizes and colors. This method is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.
The component that makes this different from other plastic manufacturing methods that no pressure is needed. It also has few contenders when it pertains to the creation of large hollow items which are long-lasting and inexpensive.There is a wide variety of products that are created by this process including big water tanks, automobile items, sophisticated molded medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in terms of design and forms that the process creates
Benefits of Using Rotomolding to Manufacture Plastic Products
- – Relatively low tooling costs.
When compared to other plastic manufacturing processes in Deale MD 20751, 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
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 Maryland 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 Deale Maryland 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 Method in Detail
This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians for instance, worked with rotational molding techniques in the making of ceramics. The Swiss were also utilizing this rotation format to generate hollow chocolate eggs. Some plastic products in the USA were created utilizing this procedure some time between 1940 and 1950. Since it was viewed to be a very slow-moving process, the technique has however taken long to become popular
1. Mould fitting.
A fixed amount of polymer in grain form is loaded into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel component. The color needed for the finished product is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.
Preheating 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 locked and placed into the oven.
2. The heat and fusion procedure.
Once inside the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done slowly, about 20 spins per sixty seconds. Something that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the material will lose value and durability, creating a faulty item. If it is extracted from the oven prematurely, the polymer will not have flowed correctly, which produces bubbles in the finalized item.
3. Mould cooling.
When the product has sufficiently spent the enough 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 creates a cool mist. When the product cools, it shrinks a little for ease of extraction from the mold. This is yet another measure that depends a lot on the ideal timing, since quick cooling decreases the material too fast, causing warping of the item.
4. The offloading or de-molding step.
When the product within te mould has cooled effectively, the molder handling the operation can then remove the completed product from the mould. The procedure is repeated from the beginning, providing a number of exact products.
For more information on the different rotational rotomolding options offered for the Deale MD 20751 area, 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 plastic manufacturing