Evaporative cooling of injection mold inserts
Publication Date: 2002-May-15
The IP.com Prior Art Database
This invention broadly relates to evaporative cooling of a machine component. In particular, this invention relates to evaporative cooling of mold inserts for the production of plastic preforms; preforms are used to produce blow-molded bottles. Through the use of latent heat of evaporation, more energy is removed from the plastic per mass of cooling medium, and per area of cooling channel that directly cools plastic, when compared to convective heat transfer method. Secondly, since the evaporation of the cooling medium occurs at the surface of the cooling channel there is no impact of a boundary layer on the cooling efficiency. The same amount of heat should be removed from the plastic in a shorter time thus leading to faster cycle times.