Structural design requirements
For cosmetics, the first layer of packaging is very important and directly related to product quality. The first layer of cosmetics is mostly plastic containers. The structural design of plastic containers is inseparable from the choice of materials and molding processes. Commonly used plastic materials can be classified into soft materials and hard materials in terms of texture, that is, typical soft materials represented by PE, PP, etc., and typical hard materials represented by ABS, PMMA, and the like.
The common molding processes for plastic containers include injection molding, hollow molding, injection blow molding, etc. However, no matter which molding process is selected, the sealing design and capacity design of the plastic container are essential.
Product sealing is a mandatory quality standard in the cosmetics industry. Generally choose gasket sealing and quality (gross weight), volume, production date and shelf life or production batch number and deadline use date, as well as select GB/T191-2008 packaging and storage. Graphical signs in the logo, and the logo should be clear, complete and in a suitable position.
2. Capacity design
There are two kinds of conventional forms of capacity labeling: one is a product in which the content does not flow under normal temperature conditions in terms of weight (g, kg), and the other is a product in which the content can flow under normal temperature conditions (ml) , L) is the unit.
For products in which the contents can flow, when weight (g) is used, it is necessary to convert the required contents into volume units, volume (ml) = weight (g) / product density. This is because the packaging space is most convenient and accurate when it is molded with standard distilled water.
When designing the capacity of a packaging container, it is considered that the volume and shape of the cosmetic may be changed due to factors such as time and temperature, preparation and filling, and self-adhesiveness. Therefore, an appropriate space should be left in the design of the full capacity of the packaging container.
Regulatory standards requirements
Full understanding of the relevant regulations and standards for cosmetic packaging is the premise and basis for the design of cosmetic packaging. For example, in the No. 75 “Measures for the Supervision and Administration of Quantitative Packaging Commodities” issued by the General Administration of Quality Supervision, Inspection and Quarantine, there is a clear definition of the net content of products: quantitatively packaged goods with large changes in net content caused by factors such as water changes, Producers should take measures to ensure the accuracy of the net content of the goods under the specified conditions.
Therefore, in view of the fact that the powder product will become smaller as time goes by, and the water product will lose weight over time, we will compensate for these changes. This is especially important when designing transparent packaging capacities.