Plastic İnjection
Thanks to the development of the technology, the production of a product without errors has enabled both the cost of production to be more controllable and the synchronized operation of all equipment within the framework of competition.
The ability of the molds used in the plastic injection system to cool at the desired rate and time is important for the parts to stay in the desired form and come out. For this, all possibilities must be calculated in the best way at the computer stage before the mold production is started and the errors that may occur later must be eliminated while still in the design phase.
Since the plastics production sector is a competitive market, using the right equipment will increase production efficiency and reduce costs as much as possible.
Considering the environmental and country conditions, the correct use of resources is very important in terms of national wealth.
How Are Plastic Molds Cooled?
Cooling the plastic is as important as making it fluid. This cooling process is carried out in two ways. The first is water and the other is compressed air.
Water Cooling
If cooling is done with water, care must be taken to prevent the water from dispersing into the mold at the joints of the channels opened into the mold halves. It is very important that there is no water leakage between the mold reinforcement plates so that the product does not deteriorate during the cooling phase. The water cooling process is very fast and the production will be completed after the plastic becomes solid. However, in this process, it is necessary to determine the cooling time according to the desired product, since the sudden cooling will cause the mold to crack due to the heat change. When cooling with water, care should be taken that the difference between the inlet temperature of the mold and the outlet temperature of the water is not too great. Otherwise, the product will not solidify homogeneously. If cooling with water will damage the product, then pressure cooling method should be preferred.
Compressed Air Cooling
It is similar to cooling with water in compressed air. In this process, the air leaves the mold after circulating the channels opened in the mold. The effect of cooling process is slower than cooling with water. In this, it is more appropriate to use compressed air in molding works where the wall thickness is less or the mold temperature should not change too much.
