PLW was observed to be 0.77(0.16) and 0.89(0.17)% in MAP for PP-film and PP-film with pin holes stored samples respectively, whereas slightly higher value of 0.91(0.35)% PLW was recorded for shrink pack samples in 4 days storage. Under refrigerated storage there was no change in weight till 8th day in LDPE-film and PP-film stored samples.