5 basic requirements for cosmetic packaging


Cosmetic packaging is more complex, including first-tie […]

Cosmetic packaging is more complex, including first-tier packaging, two- or three-layer packaging, and outer packaging. There are many types of first-layer packaging, including bottles (such as plastic bottles, glass bottles), hoses (such as plastic hoses, composite hoses, metal hoses), bags (such as paper bags, plastic bags, composite bags), etc. The second or third layer packaging category includes boxes (such as cartons, plastic boxes, metal boxes), labels, plastics, etc.; outer transport packaging includes cushioning and packaging.

The appearance of different levels of packaging requires commonality and inherent specificity. The commonality of appearance requirements includes packaging printing patterns and handwriting should be neat, clear, not easy to fall off, and the color should be uniform. The particularity of the appearance requirements varies according to the packaging of the different categories.

For bottle packaging, the bottle body should be smooth, smooth, uniform thickness, no obvious scars and deformation, no cold bursts and cracks; the mouth should be straight and smooth, no burrs (hair), threads, bayonet The matching structure should be intact and correct; the cooperation between the bottle and the cover should be tight, without slipping, loosening and leakage; the inside and outside of the bottle should be kept clean.

For bag packaging, it should not have obvious wrinkles, scratches, air bubbles, and the color should be uniform; the sealing should be firm, there should be no opening, perforation or liquid leakage (paste); the composite bag should be composite and firm, coating layer Uniform, no shedding.

Material requirements

In order to make the packaging sustainable, bio-based degradable materials came into being and gradually became a hot topic in the industry. Bio-based degradable materials refer to a new class of materials made by biological, chemical and physical methods using renewable materials such as crops, trees, other plants and their residues and inclusions as raw materials.

Products made from bio-based degradable materials are typically green, environmentally friendly, renewable, and biodegradable.

At present, large companies such as DuPont of the United States and BASF of Germany are actively expanding the bio-based chemicals business. As a packaging development worker in cosmetics manufacturing, I hope that in the future, bio-based degradable materials can be applied to cosmetic packaging to promote the sustainable development of cosmetic packaging.

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.

Seal design

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 capacity.

At the same time, cosmetics manufacturers must also know the national, local and corporate regulations and standards related to products, such as the "Regulations on the Administration of Cosmetic Labels" and the "Regulations on Cosmetic Hygiene Supervision" to ensure that cosmetic packaging complies with relevant regulations and standards. . Filling production demand

On-line filling is actually to check whether the packaging design is perfect and the quality of the container is qualified. Because during the formulation and filling process, the contents or material are subject to agitation and impact between the materials to create bubbles and foam, resulting in a volume change.

For example, gel products have a high viscosity, which will bring in a large amount of air during the mixing process, resulting in a large amount of bubbles stored in the semi-finished product, which affects the volume of the product; shampoo products have inherent foaming agent components, which will be in the filling process. Due to the high-speed impact, a large amount of foam floats on the surface of the material, thereby expanding the space required for the container; the viscosity of the cream product is high, and the surface of the cream body after the filling will have a conical protrusion phenomenon, which cannot be in a short time. Leveling, if the product combination is completed at this time, the cream body will be in contact with the sealing sheet, which will not only affect the appearance of the combined product, but also cause secondary contamination of the product. Therefore, these phenomena should be fully considered when designing the capacity of such products.

In addition, in the scale production process, the package assembly parts are required to be able to adapt to the operation on the high-speed assembly line; the label, printing pattern and batch number of the container surface are required to tolerate the friction caused by the high-speed conveying process; the container structure is required to be in the high-speed conveying process. Keep the state stable, can not appear dumping phenomenon, otherwise it will directly affect the normal operation of the packaging process, the labor intensity of the operators and the economic benefits of the enterprise.