Bottle Mold Research Paper

The mold is placed into the machine. On one end of the machine there is a reciprocal screw in a heated barrel. The plastic is fed into the barrel, which in turn feeds it into the screw. The first section of the screw holds the plastic together so that it starts to melt. Moving a little further up, the threads on the screw become thinner. This because the barrel is heated and the pieces of plastic are being pushed together and rubber together, the plastic melts. At the tip of the screw there is a piece which holds the plastic in place until enough plastic has been stored to push into the mold and complete the mold. Now that the plastic has been melted, it needs to be injected into the mold before it hardens and dries. Using a hydraulic push, the machine pushes the screw forward at up to 300 psi, blasting the plastic into the mold at an immense rate. Finally, when the product has been cooled, it is removed from the machine.
The mold is placed into the machine. The workers feed the high density polyethylene into the heated barrel where it is pushed through the screw. The threads of the screw begin wider apart, because the high density polyethylene is in full form, but as it gets rubbed against itself, it begins to melt. As the high density polyethylene moves through the screw the threads get thinner and thinner until the plastic is completely melted in which it is stored in front of the screw. When the maximum capacity for melted high density polyethylene is reached, the screw is hydraulically pushed forward and the plastic is shot at a high velocity into the mold. After it has hardened the product is removed. When the product leaves the mold, it should be the desired color, weight and size. In this case see through, with a wider top than the