The aluminum-plastic combination cap is a bottle cap made of a combination of aluminum and plastic materials, widely used in the pharmaceutical, food, beverage, and cosmetics industries. It combines the high strength of aluminum with the excellent sealing properties of plastic, ensuring the safety and convenience of packaging.

Materials

The aluminum-plastic combination cap consists of two main materials:

Aluminum Material:

High-purity aluminum alloys such as 1050, 8011, and 3105 are commonly used due to their excellent ductility and corrosion resistance.

• 8011 aluminum alloy: Commonly used, with good corrosion resistance, ductility, and oxidation resistance, suitable for pharmaceutical bottle caps, food packaging, etc.

• 3105 aluminum alloy: Higher mechanical strength, suitable for bottle caps with high sealing requirements.

• 1050 aluminum alloy: High purity, ideal for products requiring high chemical stability.

Surface Treatment: Anodizing, coating, or printing to enhance rust resistance and aesthetics.

Plastic Material:

Generally, food-grade or medical-grade plastics (such as polypropylene PP or high-density polyethylene HDPE) are used to ensure good sealing and safety.

• Polypropylene (PP): High heat resistance, suitable for high-temperature sterilization products.

• Polyethylene (PE): Good flexibility, excellent sealing performance, suitable for low or normal temperature products.

• High-Density Polyethylene (HDPE): High rigidity, chemical resistance, suitable for pharmaceutical and food packaging.

• Low-Density Polyethylene (LDPE): Soft and flexible, used for bottle cap sealing gaskets.

• Polyethylene Terephthalate (PET): High transparency, suitable for high-end cosmetic bottle caps.

Processing Adaptation: Injection molding or compression molding to ensure a tight bond with the aluminum layer.

Specifications of Aluminum-Plastic Combination Anti-Counterfeit Bottle Cap

Key Benefits

1.Superior Sealing: The plastic liner enhances sealing performance, preventing leakage and contamination.

2.High Corrosion Resistance: Aluminum alloy provides oxidation and corrosion resistance, suitable for various environments.

3.Easy to Open: Can be designed with tear-off rings or easy-peel features for user convenience.

4.High Safety Standards: Complies with food-grade and medical-grade standards for sterile packaging.

5.Customization Options: Colors, electroplating, printing, and more can be customized to meet brand requirements.

Types of Aluminum-Plastic Caps

• Ring Anti-Counterfeit Cap: Designed with a ring for tamper-evident security upon first opening.

• Twist-Off Anti-Counterfeit Cap: Requires twisting to open, preventing unauthorized tampering.

• Screw-off Anti-Counterfeit Cap: Opens by rotation while maintaining anti-counterfeit functionality.

• Aluminum-Plastic Combination QR Code Cap: Integrates QR code technology for product traceability and authentication.

Applications

The aluminum-plastic combination cap is widely used in various industries:

1.Pharmaceutical Industry: Suitable for infusion bottles, vaccine vials, and other pharmaceutical packaging, ensuring sterile sealing.

2.Food & Beverage Industry: Used for milk, juice, alcoholic beverages, and bottled products to enhance freshness.

3.Cosmetics Industry: Applied to perfume, skincare, and essential oil packaging to improve product aesthetics.

4.Chemical Industry: Suitable for pesticides, reagents, and other products requiring high sealing performance.

Production Process

The manufacturing of aluminum-plastic combination caps typically involves the following steps:

1.Aluminum Stamping: Pressing aluminum coil into the desired bottle cap shape.

2.Cleaning & Oxidation Treatment: Removing oil stains and performing anodizing to enhance corrosion resistance.

3.Plastic Injection Molding: Using injection molding to create the plastic liner or outer cap.

4.Assembly & Compression: Combining the aluminum and plastic parts for a tight fit.

5.Printing & Surface Treatment: Customizing the color coating, hot stamping, silk screen printing, etc.

6.Quality Testing: Checking sealing, pressure resistance, and corrosion resistance to ensure high quality.

7.Packaging & Delivery: Packing and shipping the qualified products to customers.

Packaging & Shipping

• Packaging Method: Plastic bag + carton + pallet packaging to prevent damage during transportation.

• Shipping Options: Sea freight, air freight, or land transportation based on customer needs.

• Delivery Time: Typically 7-15 days depending on order volume.

• Customization Service: OEM/ODM services available to meet different market demands.