Brief introduction to the oxygen barrier performance test and strength test of cosmetic containers

Along with the sales boom on e-commerce websites, small and medium samples of major brands of cosmetics have been sought after. Are those big-name cosmetics that seem cheap and good-quality really another window for ordinary consumers?
As we all know, big-name cosmetics are expensive, not all products that consumers can buy, and the capacity of an ordinary cosmetic container, if it is not used as soon as possible, the cosmetics will expire and cause waste.
The products in the small and medium-sized cosmetic bottles launched according to the promotion are relatively small, so there is no need to worry about the waste caused by the use of surplus, and the price is also accepted by the public, which is the best choice for ordinary consumers.

Common packaging forms of cosmetics mainly include plastic bottles, hoses, glass bottles, and flexible plastic packaging bags. In order to ensure the functional requirements of cosmetics, the raw materials used in different cosmetics are different, but in general, according to the difference in performance and function, the raw materials of cosmetics are divided into base materials and auxiliary materials. Oily raw material is a main matrix raw material. Some components of this type of raw material contain unsaturated bonds, such as olive oil. Such components are easily oxidized under appropriate conditions such as oxygen, light, and temperature, and cause rancidity. , Produce peculiar smell, discoloration, etc. In addition, if some cosmetics are produced, used or stored improperly, microorganisms are prone to grow and mold. Therefore, packaging materials used in cosmetic containers should have good oxygen barrier properties and be able to shield from light, thereby reducing the amount of oxygen in contact with cosmetics and avoiding light.
Strength testing includes packaging material tensile strength, composite film peel strength, heat seal strength, tear strength, puncture resistance and other indicators. Tensile strength refers to the large stress value that the material bears before breaking. The inspection can effectively solve the packaging damage and breakage caused by the external force due to the insufficient mechanical strength of the selected packaging material. Peel strength is also called composite strength, which is to detect the bonding strength between layers in the composite film. If the bonding strength is too low, problems such as leakage caused by separation of the layers will easily occur during packaging use. Heat seal strength is to detect the strength of the seal. During the storage and transportation of the product, if the heat seal strength is too low, it will cause problems such as cracks in the heat seal and leakage of the contents. Puncture resistance is an index for evaluating the puncture resistance of packaging against hard objects.