4.Capacity design There are two general forms of capaci […]
There are two general forms of capacity indication: one is that the product whose content does not flow under normal temperature conditions is based on weight, and the other is a product that whose content can flow under normal temperature conditions is based on volume.
For products whose contents can flow, when the weight (g) is used as the unit, it is necessary to convert the required content weight into volume units, where volume (ml) = weight (g) / product density. This is because after the packaging container is formed, its inner cavity space is most conveniently and accurately tested with standard distilled water.
When designing the volume of the packaging container, consider that cosmetics will change volume and shape due to factors such as time and temperature, preparation and filling, and self-viscosity. Therefore, appropriate space should be reserved when designing the full capacity of the packaging container.
5. Regulatory standards requirements
Fully understanding the relevant regulations and standards for cosmetic packaging is the prerequisite and basis for good cosmetic packaging design. For example, in the "Measures for the Supervision and Management of Quantitative Packaging Commodities" issued by the General Administration of Quality Supervision, Inspection and Quarantine No. 75, there are clear regulations on the net content of products: for quantitatively packaged commodities with large changes in net content caused by factors such as moisture changes Producers shall take measures to ensure the accuracy of the net content of commodities under the prescribed conditions.
Therefore, considering that powder products will become smaller with time, and water products will lose weight with time, etc., we must compensate for these changes. Pay special attention to this when designing transparent packaging capacity.
At the same time, cosmetics manufacturers must know the relevant national, local and corporate regulations and standards in a timely manner, such as the “Regulations on the Management of Cosmetics Labels” and the “Regulations on the Supervision of Cosmetics Hygiene” to ensure that cosmetic packaging complies with relevant regulations and standards . Filling production requirements
On-line filling is actually checking whether the packaging design is perfect and the container production quality is qualified. Because during the preparation and filling process, the content or the material body will generate bubbles and foam due to the agitation and the impact between the materials, resulting in a volume change.
For example, gel products have a high viscosity, which will bring a lot of air during the manufacturing process, which will cause a large amount of air bubbles to be stored in the semi-finished product, which will affect the volume of the product; shampoo products have inherent foaming agent components, which will be in the filling process Due to high-speed impact, a large amount of foam floats on the surface of the material body, thereby expanding the space required for the container; cream products have high viscosity, and the conical protrusions on the surface of the cream body after filling can not be used for a short time. Leveling, if the product combination is completed at this time, the cream body will contact the sealing sheet, which will not only affect the appearance of the combined product, but also cause the possibility of secondary pollution of the product. Therefore, in the capacity design of such products, these phenomena should be fully considered.
In addition, in the process of large-scale production, packaging assembly components must be able to adapt to high-speed assembly lines; labels, printed patterns, and batch numbers on the container surface can tolerate friction during high-speed transportation; container structure is required during high-speed transportation Keep the state stable and no dumping will occur, otherwise it will directly affect the normal progress of the packaging process, the labor intensity of the operators and the economic benefits of the enterprise.