Whether the cooling system design of Mineral water bottle preform mold is reasonable is a crucial issue, which directly affects the production efficiency of the mold, the quality of the preform and the service life of the mold.
A reasonable cooling system can first significantly improve production efficiency. During the bottle preform injection molding process, after the plastic melt is injected into the mold cavity, it needs to be quickly cooled and shaped. If the cooling system is properly designed, the preform can reach the demoulding temperature in a shorter time, thus shortening the entire injection molding cycle. For example, by accurately designing the layout of the cooling channels, the coolant can evenly take away heat from all parts of the mold cavity, which can effectively speed up the cooling of the preform. For example, the use of a surrounding cooling channel can closely fit the cavity wall, making heat conduction more efficient. Compared with an unreasonably designed cooling system, the injection molding cycle may be shortened by 20% or more.
From the perspective of preform quality, the rationality of the cooling system also plays a key role. Uniform cooling ensures uniform preform wall thickness. When cooling is uneven, temperature differences in different parts of the mold will cause inconsistent shrinkage of the plastic, resulting in uneven wall thickness of the preform. A reasonable cooling system can also improve the appearance quality of the preform and avoid surface defects caused by local overheating, such as sink marks, deformation, etc. For example, in key parts such as the neck and bottom of the bottle preform, if the cooling rate is appropriate, the dimensional accuracy and surface flatness of these parts can reach high standards, and high-quality bottle preforms can be produced.
For the service life of the mold, a good cooling system is indispensable. If the cooling system cannot effectively remove heat, the mold will be exposed to high temperature for a long time, which will accelerate the thermal fatigue and wear of the mold material. A reasonable cooling system can control the mold temperature within an appropriate range and reduce cracks and other damage to the mold caused by thermal stress. For example, by accurately controlling the flow and temperature of the cooling medium to maintain the stability of the mold temperature, the service life of the mold can be greatly extended and the mold replacement cost of the enterprise can be reduced.
Therefore, when evaluating the cooling system of the Mineral water bottle preform mold, multiple factors such as production efficiency, preform quality, and mold life need to be comprehensively considered to determine whether its design is reasonable.
