Good chemical stability of glass bottles, not easy to react with the contents; good transparency, you can add iron, cobalt, chromium and other coloring agents in the raw materials to produce a variety of colours of glass bottles (such as amber glass, green glass, green and white glass, cobalt blue glass, milky glass); good heat resistance and not easy to deformation; high compressive strength, resistance to internal pressure; high density, a sense of weight (suitable for higher-grade cosmetics packaging). Good barrier, hygiene and preservation, easy to seal, can be tightly sealed again after opening, etc. However, at the same time, the impact resistance of glass bottles is poor, fragile, high filling costs, more complex molding and processing, limiting the application of glass bottles. Glass bottles are often used in the packaging of high-grade cosmetics or some special requirements of cosmetics.
Benefit from the rapid growth of high-grade skin care products and people’s large demand for glass products. In addition, manufacturers of cosmetic packaging bottles should also seek development opportunities from emerging markets and constantly update their products to meet customer requirements. Glass packaging industry in recent years can be described as difficult and slow growth, and with the high pressure from this year on environmental protection can be said to be a difficult step.
The surface state, composition and structure of the glass cosmetic container is very different from its internal composition and structure. The surface nature of the glass bottle has a significant impact on the nature of its body. The chemical stability of glass, in fact, depends on the chemical stability of its surface, and the mechanical strength and impact resistance of glass is also determined to a considerable extent by the form and structure of the glass surface. Therefore, the surface treatment of glass is one of the important technical means of manufacturing high-strength and lightweight glass containers.
The purpose of the surface treatment of glass cosmetic containers is to change the chemical stability of the container surface and eliminate damage to the glass surface, so as to achieve the purpose of strengthening. The main methods are the addition of coatings when making bottles, physical strengthening, chemical strengthening, surface acid treatment, plastic coating and other methods.
The glass cosmetic container is derived from its visual impact and texture. Compared to other packaging materials such as plastic bottles, glass cosmetic containers have a more textured and heavy feel, which to a degree can bring people closer to the product’s heart. Lightweight packaging like plastic bottles is not conducive to underlining the heaviness of the product. In addition, glass cosmetic containers can be processed later in appearance, sandblasting, spraying, baking flowers, etc. These later processes can quickly enhance the appearance of glass cosmetic containers, making glass cosmetic containers more artistic sensory, thus gaining a temperament enhancement.
Post time: Apr-26-2021