The fragrance retention of functional design of flexible packaging
The smell of food, beverages, cosmetics and other products has an important and subtle role, and every detail change in composition will have a greater impact on its quality. Products often transmit gases or odors to the surrounding space, and do not absorb undesired odors or aromas from the surrounding environment, and often the loss of a small amount of aromatic compounds can cause a great impact. Fragrance retention is a comprehensive reflection of material barrier properties, including the mechanisms of organic matter penetration, migration, and transfer.
Factors that affect fragrance retention:
(1) Changes in aroma caused by the penetration of oxygen and water.
(2) Permeation of small molecules of organic matter causes flavor changes.
(3) The migration of the material components in the polymer packaging material causes the fragrance change.
(4) The transfer and loss of the aroma components of the package contents lead to the reduction of the aroma components.
Some experimental results show that the higher the barrier property of the packaging material, the better the fragrance retention performance [the penetration mechanism of organic matter (fragrance) is different from that of inorganic matter (O2)], but the fragrance components are more complex, and the packaging materials have different effects on different fragrances. Fragrance retention is optional.
