Patent ID: 8349552
Filing Date: 2013-01-08
Classification: A01N,B29C,B29D,B29L,B65B,F28D,Y02E,Y10T

Abstract:
1. A process for forming a flexible polymer pouch containing at least two inner containers which contain a phase change material consisting essentially of 98% 1-dodecanol, 1.5% myristyl alcohol and 0.5% 1-decanol, and preparing the pouch for rapid cooling of blood bags filled with freshly drawn blood, wherein the pouch will be covering a major portion of each of the two largest surfaces of the blood bags for about 2 hours for the temperature of the blood in the blood bags to drop to 22° C.±2° C., the process comprising the steps of: forming said at least two inner containers for the phase change material using at least two overlaying polymer sheets wherein a seal at their edges is completed after the phase change material is inserted; forming at least one outer container for the inner containers using at least two overlaying polymer sheets which are sealed along at least one axis to form two compartments; sealing at the edges of said compartments after the inner containers are inserted into said compartments, to form the flexible polymer pouch; and preconditioning the flexible polymer pouch at about 22° C.