Metal wine bottles screw caps is a common bottle cap design, widely used in the packaging of wine, beer, beverages and some condiments. It is connected to the bottle body through the thread of the bottle mouth, and has the advantages of good sealing, easy opening and reusability.

Materials of metal wine bottles screw caps:

- Aluminum: It is light in weight, has good corrosion resistance and ductility, is easy to process and form, and has relatively low cost. It is one of the commonly used materials for metal screw caps of wine bottles. For example, most common wine screw caps are made of aluminum.

- Tinplate: It is composed of iron and tin, has certain strength and hardness, and the tin layer on the surface can play a role in rust and corrosion prevention. It has good printing performance and can present exquisite patterns and texts. It is often used in the packaging of some mid-to-high-end wine products.

- Lining material: Plastic inner pad (such as polyethylene PE or polypropylene PP) is used to enhance sealing and prevent liquid leakage.

Features of metal screw caps for wine bottles:

- Good sealing:

The screw design can fit tightly with the mouth of the wine bottle, and the internal sealing pad and other structures, such as common ethylene polymers and polyethylene plastic pads, can effectively prevent the leakage and volatilization of the wine, and prevent air, moisture and other external substances from entering the bottle, ensuring the stability of the wine quality and extending the shelf life of the wine.

- Easy to open and close:

No additional tools are required, and the wine bottle cap can be unscrewed and tightened directly by hand. The operation is simple and convenient. Consumers can easily take the wine, and can easily reseal and store it when it is not finished, which is easy to carry and use.

- Strong durability:

The metal material has high strength and hardness, is not easy to break and deform, and can withstand certain external impact and extrusion. It can better protect the wine bottle and wine during transportation, storage and use. The metal cap also has good corrosion resistance and can resist the erosion of the wine and the external environment.

- Beautiful and diverse:

Through various surface treatment processes, such as electroplating, painting, printing, etc., the metal screw caps can have different colors, gloss and patterns to meet the needs of different brands and consumers for appearance, enhance the overall beauty and grade of the wine bottle, and play a good decorative and brand promotion role.

- Recyclability:

Metal materials can be recycled and reused, which conforms to the concept of environmental protection, reduces pollution to the environment, and reduces resource waste.

Application scope of metal wine bottle screw caps:

- Wine:

In countries such as Australia and New Zealand, screw caps have been widely used in wine packaging, and more and more high-quality wines have begun to use metal screw caps to better control the degree of oxidation of wine and ensure the quality and taste of wine.

- Liquor:

Some liquor brands have also begun to try to use aluminum screw caps, especially some mid- and low-end liquor products, which are convenient for consumers to open and drink, and can also effectively prevent the leakage and volatilization of wine.

- Other wines: such as whiskey, brandy, vodka and other spirits, as well as fruit wine, rice wine, etc., also use metal screw caps. According to the characteristics of different wines and market demand, choose the appropriate metal screw caps for packaging.