Aluminium Screw Caps
Aluminium screw caps are used for sealing containers such as bottles and jars, providing a secure and tamper-evident seal.
Aluminium Screw Caps are widely used as closure devices for bottled beverages, food, cosmetics, and other products. They are typically made of aluminum, featuring characteristics such as light weight, corrosion resistance, and recyclability.
These caps are typically made of aluminum, which is lightweight yet durable. The interior usually features a liner, such as foam polyethylene (EPE), to enhance the seal and protect the contents from contamination. The exterior of the cap can be customized with various finishes and colors to meet branding requirements.
HC Bottle Cap Manufacturing Co., Ltd. has over 17 years of experience in providing different kinds of aluminum caps, plastic caps, aluminum-plastic caps, glass bottles, and other packaging products. Our products are exported to more than 20 countries around the world including the United States, Europe, South Africa, Southeast Asia, etc.
Aluminium Screw Caps Specifications Information
| Property | Details |
| Aluminium Alloys | 1050, 1070, 3105, 8011 |
| Liner Options | PE Foam, Composite Material, Pulp and Aluminium, Pulp and Polymer, Heat Seal, Pressure Sensitive, Plastic Sol |
| Surface Finishes | Brushed Aluminium, Polished, Anodized, Lacquer Coating, Color Coating (Silver, Blue, Black, Gold, etc.) |
| Diameter Range | 18 mm – 53 mm |
| Common Sizes | 28x15 mm, 30x21 mm, 30x35 mm, 30x60 mm, 53-400, 24-400, 18-400, 20-400 |
| Thread Type | Continuous Thread (CT), Roll-On Pilfer Proof (ROPP), Push & Turn |
| Customizations | Embossing, Debossing, Laser Engraving, Custom Logos |
| Certifications | FDA Approval, EU Food-Grade Compliance, ISO Standards |
| Cap Height Range | Short, Medium, Tall |
| Compatibility | Glass Bottles, Plastic Bottles, Metal Containers |
| Applications | Beverages, Food Products, Pharmaceuticals, Cosmetics, Personal Care, Automotive Oils, Chemical Products |
Our company relies on a strictly controlled production process to ensure that every step meets high standards, producing high-quality bottle caps. HC Bottle Cap Manufacturing Co., Ltd. ensures that every cap meets international standards in terms of appearance, performance, and quality, fulfilling various customer needs and providing premium packaging solutions.
Aluminium Screw Caps Quality Testing
At HC Bottle Cap Manufacturing Co., Ltd., we implement strict quality checks for every batch of aluminum screw caps to ensure that each cap meets customer requirements and complies with international standards.
| Testing Item | Description |
| Raw Material Testing | Testing the aluminum alloy composition, hardness, and corrosion resistance of the Aluminium Screw Cap to ensure the material meets requirements and has sufficient strength. |
| Dimensions and Tolerance Testing | Checking the outer diameter, inner diameter, thickness, and tolerances of the Aluminium Screw Cap to ensure precise dimensions and compatibility with bottle necks. |
| Surface Quality Inspection | Inspecting the surface of the Aluminium Screw Cap for defects, checking smoothness, and the uniformity of printed coatings to ensure a flawless appearance. |
| Sealing Performance Test | Conducting airtightness and pressure tests to ensure the Aluminium Screw Cap has a good seal to prevent leakage. |
| Torque Test | Testing the torque during the opening and sealing of the Aluminium Screw Cap to ensure ease of use without loosening or damage. |
| Corrosion Resistance Test | Conducting salt spray and humidity tests to ensure the Aluminium Screw Cap has corrosion resistance, suitable for humid and corrosive environments. |
| Torque and Seal Consistency Test | Conducting repeatability and consistency tests to ensure the sealing performance of each batch of Aluminium Screw Caps is consistent and meets quality standards. |
Aluminium Screw Caps Design Features
Threads: Aluminium screw caps are designed to fit specific bottle necks, with threads that make installation and removal easy. Depending on the closure system, the threads can be continuous or lug type.
Liner: The liner inside the cap serves as a sealing agent, preventing leakage and maintaining the integrity of the product. Common liner materials include EPE, foam, or pulp, each offering different sealing performance.
Tamper-Evident Features: Many aluminium screw caps include tamper-evident bands or seals that break upon opening, providing consumers with a visible product safety assurance.
Aluminium Screw Caps Hot-Selling Product Series
| Product | Description |
| 8X15MM Silver Aluminium Screw Cap | The 8X15MM silver aluminium screw cap, with its delicate design and silver appearance, is an ideal choice for a variety of bottled products. Its screw structure ensures the cap's sealing and reliability, widely used in the cosmetics, pharmaceuticals, and food industries, providing an elegant and secure closure. |
| 28X15MM Blue Aluminium Screw Cap | The 28X15MM blue aluminium screw cap, made from blue aluminium alloy, provides an aesthetically pleasing and sturdy appearance. Its screw design ensures a tight seal during use, making it suitable for various liquid or solid products, especially common in personal care products and beverages. |
| Black Aluminium Screw Cap | The black aluminium screw cap has a modern black appearance and robust structure, offering excellent sealing performance. It is widely used in the cosmetics, beverage, and pharmaceutical industries, effectively protecting the contents from leakage and contamination. |
| Gold Aluminium Screw Cap | The gold aluminium screw cap features a luxurious and classic gold appearance, adding a high-end touch to the product. Its screw design ensures a tighter closure, commonly seen in high-end cosmetics, beverages, and perfume packaging, both attractive and functional. |
| 30X35MM Aluminium Screw Cap with Pearl Cotton | The 30X35MM aluminium screw cap with pearl cotton lining combines high-quality aluminium with a pearl cotton liner, enhancing protection for the items inside the bottle. The cushioning effect of the pearl cotton prevents damage from external impact, widely used in precision instruments, cosmetics, and premium beverages. |
| Aluminium Screw Cap with PE Liner | The aluminium screw cap with PE liner enhances the sealing and moisture resistance properties, providing better protection for liquid or powder contents from external contamination. Its design is perfect for the pharmaceutical, cosmetics, and food industries, ensuring freshness and safety during transportation and storage. |
| 30X60MM Pressure Aluminium Screw Cap | The 30X60MM pressure aluminium screw cap is specially designed to withstand higher pressures, ensuring the contents inside the bottle remain sealed even under high-pressure conditions. Its sturdy structure and reliable sealing performance make it the preferred choice for chemicals, oils, and certain industrial applications. |
| 30X21 MM Silver Aluminium Distillation Bottle Cap | The 30X21MM silver aluminium distillation bottle cap is specifically designed for distillation bottles, offering a high level of sealing to prevent leaks. The silver appearance gives it a modern and fresh visual effect, suitable for packaging distilled spirits, essential oils, and perfumes, ensuring product purity and long-term preservation. |
Aluminium Screw Caps Features
Material Advantages
- Lightweight: Aluminium has high strength and lightweight properties, making it easy to transport and use.
- Excellent corrosion resistance: It effectively prevents chemical reactions between the contents and the external environment.
- Environmentally friendly: Aluminium is fully recyclable, meeting green and environmental requirements.
Sealing Performance
The precise thread design ensures a tight fit between the cap and the bottle opening, providing reliable sealing and extending the product's shelf life.
Highly Decorative
Various surface treatments and printing options are available to enhance the brand image.
Aluminium Screw Caps Structure and Materials
Aluminium
Aluminium screw caps use high-quality aluminium alloys, which provide excellent strength and corrosion resistance, allowing them to maintain stable performance in various environments. This aluminium alloy ensures the durability of the cap and effectively protects the contents from external influences. Its lightweight and sturdy properties make aluminium screw caps a widely used choice in the packaging industry.
Liner
The liner of aluminium caps is typically coated with polymer materials to enhance the sealing performance and prevent chemical reactions with the contents. The material choice for the liner ensures good moisture resistance, anti-oxidation capabilities, and adaptability to the needs of various products, such as food, beverages, or pharmaceuticals. This way, the liner helps extend the product's shelf life while maintaining the quality of the contents.
Types of Aluminium Screw Caps
| Type | Description |
| Standard Screw-On Cap | Standard screw-on caps are widely used in bottles for wine, beverages, and other packaging. They can be easily tightened manually or mechanically. Their simple and effective design ensures good sealing, preventing leaks and protecting the contents from contamination. These caps are suitable for most common bottled products, offering an economical and practical packaging solution. |
| Tamper-Evident Cap | Tamper-evident caps have a breakable ring design, commonly used in pharmaceutical and premium alcohol packaging. This design leaves clear marks when the cap is first opened, ensuring that consumers can easily identify if the product has been tampered with. This safety feature is crucial for enhancing product security and consumer trust. |
| Pressure-Sensitive Cap | Pressure-sensitive caps are particularly suitable for carbonated beverage bottles. Their design allows them to withstand pressure changes caused by gas release within the bottle. These caps offer excellent sealing, effectively preventing the escape of carbonation, and ensuring that the internal pressure remains stable. Pressure-sensitive caps are commonly used in beverage packaging that requires high-pressure sealing, maintaining product quality and taste. |
| Liner Seal Cap | Liner seal caps come with liners made from various materials such as PE, EVA, and are widely used in food and pharmaceutical packaging. The liners provide an additional sealing layer, effectively preventing external contaminants from entering while maintaining the freshness and quality of the internal product. This cap design ensures a high level of sealing, making it ideal for products that require tight protection. |
Aluminium Screw Caps Surface Treatment
| Surface Treatment | Description |
| Color Coating | Color coating offers a variety of color options that can be customized according to brand needs, enhancing the visual appeal of the product. Through this surface treatment, aluminium screw caps not only match the product packaging style but also increase overall market attractiveness, catching the attention of consumers. |
| Anodizing | Anodizing treatment uses an electrochemical process to form a hard oxide layer on the surface of aluminium, significantly increasing the cap's corrosion resistance and surface hardness. This treatment is suitable for premium products, offering more durable and corrosion-resistant performance, ensuring the stability of aluminium screw caps during long-term use. |
| Printing | Printing processes such as screen printing and offset printing allow brand logos, text, and patterns to be printed on the surface of the aluminium screw cap, helping brands showcase their unique image. This custom printing makes the product more personalized and enhances brand recognition. |
| Brushing | Brushing treatment involves finely sanding the surface of the aluminium, creating a unique metallic texture. This surface treatment not only enhances the decorative effect of the aluminium screw cap but also increases the product's premium feel, making it visually more attractive. |
Internal Lining Materials
The interior of aluminium screw caps features a variety of liner options, each tailored for specific product requirements:
a. Polyethylene (PE) Foam Liners
Features: Compressible and ensures a stable seal.
Applications: Ideal for general-purpose packaging, including beverages and food products.
b. Customizable Liner Options
Foam Seals: Versatile, providing excellent sealing for dry and liquid products.
Pulp and Aluminium: Combines the flexibility of pulp with the barrier properties of aluminium. Used for concentrated beverages and juices.
Heat Seals: Adheres to the bottle mouth using specialized equipment, ensuring tamper-evidence for products like sauces and condiments.
Pressure Sensitive Liners: Bonds to the bottle surface upon application, suitable for dry products, pharmaceuticals, and supplements.
Plastic Sol: Ensures a reliable seal during hot-fill processes, often used for sauces and liquids.
c. Liner-Free Screw Caps
Some aluminium screw caps are designed without liners, commonly used for products like candles or other dry items that do not require additional sealing.
Applications Based on Liner Type
| Liner Type | Applications |
| Pulp and Polymer | Concentrates, juices, honey, syrups, dry health foods |
| Pulp and Vinyl | Weak acids, bases, solvents, alcohols, oils |
| Polymer and Aluminium | Cosmetics, personal care, automotive and edible oils |
| Pressure Sensitive | Dry products, pharmaceuticals, vitamins, and supplements |
| Heat-Induction | Food, sauces, and tamper-evident packaging |
| Plastic Sol | Hot-fill foods, beverages, and sauces |
Aluminium Screw Caps Applications
| Industry | Application Description |
| Food Industry | Aluminium screw caps are widely used in sealing bottled liquids such as honey, olive oil, soy sauce, etc. Their excellent sealing performance effectively preserves the original flavor and freshness of food, prevents external contamination, and ensures product quality and safety during transportation and storage. |
| Beverage Industry | In bottled beverages like wine (red wine, white wine, spirits), carbonated drinks, juices, and mineral water, aluminium screw caps play a crucial role as sealing components. They ensure the safe closure of liquid in bottles, preventing leakage or contamination, and maintaining the original taste and flavor of the beverage. |
| Pharmaceutical Industry | In pharmaceutical packaging, aluminium screw caps are commonly used for medicine bottles, ensuring the seal and safety of the medication. Aluminium caps effectively prevent exposure to external factors during transportation and storage, preventing moisture, oxidation, or contamination, and ensuring the quality and efficacy of the medication. |
| Cosmetics Industry | High-end skincare products and perfume bottles often use aluminium screw caps, as they provide excellent sealing properties and a premium appearance. Aluminium caps not only protect the products from air and moisture but also enhance the overall refinement of the packaging, strengthening the brand's image. |
| Industrial Chemicals | In the packaging of industrial chemicals, aluminium screw caps are commonly used for sealing chemical solvents and lubricants. Their sturdy material and good sealing performance effectively prevent leakage of liquids, ensure the safe transportation of chemicals, and resist the corrosion of packaging materials by chemical components. |
Manufacturing Process
- Stamping: Aluminium sheets are processed into the initial bottle cap shape through stamping equipment.
- Thread Processing: Professional molds are used to process threads on the bottle caps, ensuring compatibility with the bottle mouth.
- Surface Treatment: Spraying, anodizing, or printing processes are performed according to requirements.
- Sealing Gasket Assembly: Sealing gaskets are installed for specific purposes to enhance leakage prevention.
Advantages
- Cost-Effective: Compared to other metal bottle caps, aluminium screw caps are more cost-effective to produce.
- High Safety: Easy to unscrew without the need for additional tools, making it user-friendly.
- Design Flexibility: Supports various shapes, sizes, and surface treatments to meet personalized customization needs.
- Durability: The durability of the aluminium material ensures that the screw caps are not easily damaged during transportation and storage.
- Moisture Resistance: Excellent sealing performance effectively prevents moisture from entering, protecting the quality of the contents.
- Versatility: Suitable for food, beverages, pharmaceuticals, personal care, and chemical products.
- Customization: Multiple size, color, and liner options are available to meet different needs.
- Aesthetic Appeal: The surface of the aluminium caps can be treated with various processes such as spraying and anodizing to increase visual attractiveness.
Why Choose HC Bottle Cap Manufacturing Co., Ltd.?
At HC Bottle Cap Manufacturing Co., Ltd., our aluminum screw caps undergo strict quality testing to ensure that each product meets customer needs and industry standards. We not only focus on the functionality and safety of the caps, but we are also dedicated to enhancing their aesthetic design and user experience, so every bottle of product showcases high quality in detail.
Our products are widely used in various industries, including beverages, cosmetics, pharmaceuticals, and more, and have received global recognition from customers. We understand that only through high-standard quality control can we provide reliable packaging solutions and help our clients stand out in the market.
Choosing HC Bottle Cap Manufacturing Co., Ltd. means choosing quality, innovation, and trust. We look forward to working with you to provide the best aluminum screw cap solutions for your products.
Aluminium screw caps, due to their light weight, excellent sealing properties, and strong recyclability, have become an important choice in modern packaging.
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