Talking about the Compatibility Test of Cosmetic Packaging Materials
As one of the pillar industries of FMCG, consumers are becoming more aware of their awareness and awareness. Consumers are no longer blindly following the trend, paying more attention to cosmetics safety and health. With the safety of cosmetic packaging materials, More stringent requirements.
The packaging material compatibility test is an important part of the cosmetics before the market, and can not be omitted. The compatibility between the cosmetic materials and the materials can be divided into the following three types: chemical compatibility, physical compatibility, biological Compatible, in many cases incompatibility is not a single incompatibility.
First, chemical incompatibility
The chemical components in the cosmetic packaging material decompose and react with the cosmetic ingredients, which manifests itself in the appearance or odor of the packaging material or the contents.
Second, the biological incompatibility
Bio-incompatibility is manifested by the amount of harmful substances dissolved that exceeds the measurement specified in the cosmetic hygiene standards or specifications.
For example, plastics produce cracked monomers at high temperatures. Plastic products generally contain plasticizers, stabilizers, and pigments. If these additives are dissolved, they may become a cause of deterioration or odor of the contents. Toxic and harmful chemicals in ink pigments, dyes, and pigments can migrate into plastic packaging films to cause damage, and environmental pollution can be absorbed by packaging materials and then migrated to the contents. Heavy metals in metallic materials migrate to cosmetics. Glass products may cause alkali dissolution during storage of cosmetics, causing discoloration, precipitation, separation and pH changes of the contents. In addition, the glass packaging material has a defect, which is very sensitive to low temperature, and the temperature difference between the north and the south is large, and the cosmetics in the south are shipped to It is very likely that frost cracking will occur in the north.
Third, physical incompatibility
When the packaging material and the internal material are affected by each other, physical changes occur; physical incompatibility is manifested as penetration, adsorption, cracking, cracking, dissolution, and the like. In the test judgment, physical incompatibility is often misjudged as chemical incompatibility, which is due to the obvious phenomenon of physical incompatibility, and the reaction is more severe.
The performance of the results of the compatibility test is actually quite complicated. Usually, many colleagues ask that if the compatibility is unsatisfactory, then all the samples should react with the contents, and each sample should have The question is right, why is there a good or bad sample at the same temperature? In fact, there is a certain ratio of unqualified compatibility. For example, at 40 ° C, 10 samples were tested, only 2 samples were cracked, and the remaining 8 samples were intact, but when you expanded the sample volume to hundreds of samples, It will be found that the number of cracked samples has increased to dozens; and so on, if such a package is put into mass production, the last problem may not be a small amount.