Packaging knowledge of liquid cosmetics

According to the different fluidity exhibited by liquid cosmetics, they can be roughly divided into liquid cosmetics, emulsion cosmetics and paste cosmetics. This article discusses some of the issues involved in the liquid cosmetics packaging.

There are many types of liquid cosmetics, such as nail (toenail) oil, nail polish remover; hair dye, gel water, hair spray and hair mousse (aerosol hair conditioner); various toners (such as toner, prickly heat water, firming skin) Water, moisturizing liquid); perfume, essence, etc., are all liquid cosmetics.

1. Commonly used packaging materials

The packaging materials commonly used in liquid cosmetics are mainly glass materials, plastic materials, high-grade cardboard and so on. The commonly used packaging containers are mainly small-caliber glass bottles and plastic bottles of various shapes. The bottle caps are generally plastic caps and functionally designed.

Among them, glass materials are mainly used to make glass bottles and glass jars of various sizes and structures; plastic materials such as polypropylene, polystyrene, etc., are often used to make plastic bottles of various shapes, and polypropylene is also commonly used to make various Shaped bottle caps; high-grade cardboard is often used to make beautifully printed, elegant and unique cartons, as the outer packaging of liquid cosmetics, together with plastic or glass bottles to form sales packaging. Polypropylene bottles can be used for mist sprayer packaging of perfumes and essences, and hair gels are also often packaged in plastic sprayer.

2. Common packaging forms

Plastic bottle packaging：

The plastic bottle has a small specific gravity, is easy to color, and has strong plasticity. It can be made into various shapes of bottles, and the price is low, which is suitable for mass production. In order to increase the decorative effect of plastic bottles, in addition to bottle printing, coloring materials can also be added during production to make bottles of various colors.

Glass bottle packaging:

The glass bottle has good chemical stability and is not easy to react with the contents; good transparency; good heat resistance and not easy to deform; high compressive strength, resistance to internal pressure; high density, with a sense of weight (suitable for higher-grade cosmetic packaging); barrier It has good properties, hygiene and preservation, easy to seal, and can be re-tightened after opening.

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