Turning Plastic Milk Jugs into Plastic Fencing
Plastic milk jugs are a common product that is recycled by many. These plastic milk containers do not have to sit in a landfill, but can find a new life by being recycled into plastic fencing. Many are not sure on how these milk jugs are turned into plastic fencing. This information should take some of the mystery out of making plastic fencing out of plastic milk jugs.
The first step in turning plastic milk jugs into plastic fencing begins with grinding the plastic. A blower sucks up the plastic pieces into a grinder and then deposits the material into a separator. After the all of the pieces are put into the separator, the raw material is vacuumed out onto a conveyor and is then blended with color concentrates and ultra violet stabilizers. These color concentrates are what gives the plastic fencing whatever color is desired. Also, by adding the ultra violet stabilizers will ensure that the plastic fencing does not fade when exposed to sunlight for extended periods of time.
When the plastic has been colored and treated with the ultra violet stabilizers it is then heated to 475 degrees. This melts the plastic so it can then be pushed with a hydraulic piston through a dye or mold giving it the desired shape. As the plastic moves through the dye it starts to rise, much like bread that is proofing, when exposed to the cooler air outside of the machine. In order to stop the rising process the plastic fencing is then put through a cooling tank. These cooling tanks shoot ice-cold water onto the plastic fencing cooling the outside layer to about room temperatures.
With the cooling process is complete, it will move by a conveyor belt to start the air-drying process. Once the fencing is dried, it is then run through yet another cooling tank before making its way into an embossing machine. The embossing machine heats up the surface of the plastic once again to 300 degrees. By doing this allows a pattern to be embossed onto the plastic fencing. The plastic fencing is then sent to a cutter where the products is cut into various lengths and are then ready for use in building a plastic fence.
Since the invention of this recycling process, it has kept many plastic milk jugs out of landfills. By using recycled plastic products for building can help to save the environment and make it a better place for all.