Everyone knows that many cosmetic packaging materials are glass bottles because glass materials are much better than plastic materials. With the younger consumers in the cosmetics industry, more and more people have begun to pay attention to the appearance and beauty of glass bottles. As one of the primary containers of cosmetic packaging materials, glass material must have a big consumer market trend.
Product packaging combines maintenance function and artistic beauty and an innovative combination of practicality and trend. But cosmetics packaging is different from other packaging shopping malls. It pays more attention to the appearance of cosmetics and the temperament it conveys. The crystal clear visual sense of glass products combined with the appearance of various forms will give people a high-end atmosphere feel, and plastic cosmetics cannot achieve this kind of temperament.
With the development of cosmetics stores, more and more cosmetics OEM manufacturers want to develop in high-end stores, leading to more and more people tending to glass cosmetic bottles.
At present, the packaging of big-name skincare products in international shopping malls are mainly glass products with high textures and levels. At present, many cosmetic brands are gradually moving closer to high-end shopping malls, and demand for glass products will continue to increase. In addition, glass can reduce carbon emissions. It is environmentally friendly and resistant to deformation and light transmission. It is a perfect container for raw materials.
Let’s briefly introduce the common processes of cosmetic glass bottles
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Bronzing
Bronzing has two effects: shiny and matte. Brightness: bronzing, silver, magic silver, red gold, blue gold, etc. The color can be customized according to product needs. This process is not stable except for gold and silver. Matte: As the name suggests, the color is relatively bright and dull. The bronzing temperature should be between 100-200℃ (similar to that of low-temperature silk screen printing). Bake in an open oven for about 30 minutes and a closed oven for about 15 minutes. The bronzing process is a low-temperature process. If a product adopts both high-temperature and low-temperature processes, the high-temperature process must be performed before the low-temperature process can be performed.
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Silkscreen
High-temperature silkscreening and low-temperature silkscreening are commonly used in daily silk printing.
Low-temperature screen printing is that the ink is oily, and it is baked at a low temperature of about 150 degrees after printing; some silkscreen does not need to be baked, and it is naturally left to dry after printing; the advantages are diversified colors, stable inks, and slight color difference, the design is more complicated. For example, screen lines or thin text can achieve better printing results. The disadvantage is that the ink is not intense, and it is easy to wipe and touch the flowers; high-temperature screen printing is that the ink is powdery, and it needs to go through 550-700 degrees high-temperature baking, its advantages are resistant to friction, not easy to fade, strong adhesion, bright colors, and bright colors; its disadvantages: limited colors, easy to produce a color difference, some colors cannot be printed at high temperatures, such as purple, right texts, and lines that are too thin cannot be displayed well.
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Electroplating
Electroplating effects generally include four types: bright light, matte light, gradient, and illusion. Process flow: primer on the glass bottle, aluminum electroplating by electroplating machine, and finally top coat.
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Spraying
The spraying process can be sprayed on the inside and outside of the bottle. The inner spraying is generally limited to the bottle type with the inner liner. The coating cannot directly contact the packaging. The spraying we often say generally refers to the outer spraying. The spraying is divided into the complete light transmission, semi-transmission, and solid color, and also divided into bright light and matte gloss in terms of gloss.
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Frosted
The frosting process of the glass bottle is the visible crystal formed by acid etching the surface of the glass bottle by a solution containing hydrofluoric acid and hydrofluoric acid vapor. It is the most common process for the post-processing of cosmetic glass bottles.
Frosting has many applications, such as high and low-temperature screen printing, spraying, electroplating, baking, and other processes. It also enhances the adhesion of these processes.
Process defects: If the fixtures are not matched during the acid etching process, the frosting powder is easy to enter; the uneven surface may cause light leakage (affecting the appearance and not conducive to spraying).
Process requirements: The fixture requirements must be consistent with the mouth of the glass bottle to prevent the mouth of the bottle from entering the frosting water. There should be no oil in the glass bottle body to avoid light leakage, which has high requirements on the cleanliness of the bottle body and the processing environment.