1. Definition
·Glass is formed by melting silica and other chemicals together (the main production raw materials are: soda ash, limestone, quartz). A silicate non-metallic material that forms a continuous network structure when melted and gradually increases in viscosity and hardens during cooling, causing it to crystallize. The chemical composition of ordinary glass is Na2SiO3, CaSiO3, SiO2 or Na2O·CaO·6SiO2, etc. The main component is silicate double salt, which is an amorphous solid with an irregular structure.
·Glass bottles do not have any special material classification, but are mostly classified according to their uses.
2. Advantages of cosmetic packaging glass bottles
-The glass material is lead-free and harmless, and has good barrier properties. It can well prevent various gases from oxidizing and corroding the objects inside the bottle, and at the same time, it can effectively prevent the volatile components of the inner material from evaporating.
- Glass bottles are safe and hygienic, non-toxic and harmless, have good corrosion resistance and acid corrosion resistance, can be recycled and used repeatedly, are beneficial to environmental protection, and have special packaging advantages for the cosmetics industry.
3. Classification and matching of glass bottles
-Cream bottle series: wide-mouth glass bottle + double-layer plastic outer cover (generally capacity is 10g-50g).
-Essence series: narrow mouth glass bottle + plastic pump head or anodized aluminum pump head (generally capacity is 20 to 100ml)
-Toner series: narrow mouth glass bottle + plastic inner plug + outer cap (100ml or more, there are also types with pump heads)
-Essential oil bottle series: narrow mouth glass bottle body + inner plug + large cap or plastic head + dropper + anodized aluminum cap. Essential oil bottles are usually brown or colored or colored frosted, which can avoid light and better protect the essential oil material.
Note: Glass bottles with a capacity greater than 200ml are rarely used in cosmetics. The main reason is that the capacity is too large and the weight of the glass bottle makes the overall weight too large, making it relatively cumbersome for women to use.
4. Cosmetic glass bottle coloring process
-Bottle color or effect process
Frosted, sprayed, electroplated. The spraying effect generally costs an additional US$0.1-0.2, electroplating will be more expensive than spraying, and frosting will add a few cents more.
-Frosted
The surface of the glass is treated with substances such as abrasives or etching agents to roughen it, creating a fine layer of frosting, giving it a translucent or completely opaque appearance, adding to its texture and artistic appeal.
-Spray
The glass bottle spraying process is a processing method that applies a thin layer of paint to the surface of the glass bottle. This process usually involves spraying a specific coating evenly onto the surface of the glass bottle to achieve beautification, protection or specific functionality.
-Plating
The glass bottle electroplating process is a process that uses electrochemical methods to form a metal coating on the surface of the glass bottle. This process is usually used to beautify and improve the appearance of glass bottles, giving them a metallic texture and adding a sense of nobility.
-Silk screen printing on the bottle
-Screen printing category: When silk printing on a blank transparent or frosted or spray-coated bottle, high-temperature ink should be used. After coloring, it will be baked at high temperature. It will not fade and be difficult to scratch. If the color is dull, a high-temperature furnace should be used. Another kind of low-temperature ink screen printing has a brighter color and higher requirements for the ink, otherwise it will easily fall off, and you must pay attention to bottle disinfection.
-MOQ: Generally more than 5,000 pieces, less than 5,000 pieces will be charged at US$200 per item, and above 50,000 pieces, it will be charged at US$1.1 per time. Round bottles with the same color printing are counted as one color, flat or oval bottles are calculated based on the number of printing surfaces and the number of printing colors on the printing surface.
- Precautions for silk screen printing: In the design, it is necessary to consider that no more than 2 colors should be used. The film must be negative. The text, pattern, and lines should not be too thin or too large, which may easily cause broken lines or ink accumulation. Before batch production, it is necessary to Confirm by proofing to avoid color differences. If the frosted glass bottles are misprinted, they can be re-polished and re-printed. The processing fee is US$0.2-0.5 per bottle.
-Bottle cap technology
It can be used for anodized aluminum engraving, hot stamping edges, and etching lines. It can be matte or glossy. It needs to be equipped with a gasket and an inner cover. It is best to use it with a pressure-sensitive sheet to enhance the sealing effect.
5. Cosmetic glass bottle mold opening costs
The manual mold is about 300 US dollars, the automatic mold is generally about 800 US dollars, and 1 out of 4 or 1 out of 8 will cost about 6000-8000 US dollars, depending on the specific conditions of the manufacturer.
6. Production cycle and minimum order quantity of cosmetic glass bottles
· Common bottle shapes for glass bottles are usually in stock. The production cycle of glass bottles is longer, which can take up to 20 days, and some delivery times take 45 days. The cycle and minimum order quantity will be affected by peak and off-season.
· The general order quantity is 5,000 to 10,000. The smaller the bottle size, the larger the quantity.
· During transportation, they should be packed with paper or bubbles and separated individually. They should be equipped with inner supports and middle boxes for better shockproof effect.