28mm Aluminum ROPP Cap

28mm aluminum ROPP bottle caps are a specialized closure system designed for sealing bottles in industries where secure, tamper-evident packaging is required.

The 28mm aluminum ROPP (Roll-On Pilfer Proof) cap is a tamper-evident seal commonly used to seal beverage containers such as glass and plastic PET bottles. These caps are designed to provide a tight seal, ensuring product integrity and consumer safety.

28mm aluminum ROPP bottle cap

28mm Aluminum ROPP Cap Specifications

Product Name:	28mm aluminum ROPP cap
External Size:	28.7±0.15mm
Bottle Finish:	GPI 1650/MCA 2
Liner:	TPE liner(PVC-free liner)
Height:	17.7mm
Type of printing	Logo printing/color according to the clients' requirements
Packing Method:	3500pcs/carton Carton size: 50x32x30cm

28mm Aluminum ROPP Cap Structure

ROPP (Roll-On Pilfer Proof): A method that uses mechanical means to roll the aluminum shell onto the bottle neck, forming threads and compressing the tamper-evident band.
28mm: Refers to the inner diameter of the cap, matching the size of the bottle neck.
Material: Made of lightweight, malleable aluminum, with corrosion resistance and recyclability.

Color coated and roller coated 28mm Aluminum ROPP Cap

28mm Aluminum ROPP Cap Features

Feature	Description
Tamper-Evident	The 28mm Aluminum ROPP Cap features a unique ROPP design with a tamper-evident band, leaving a clear sign of tampering when opened, allowing consumers to easily identify if the product has been opened. This design effectively prevents unauthorized tampering or opening, enhancing consumer safety and trust.
Secure Seal	The 28mm Aluminum ROPP Cap creates an airtight and leak-proof seal, ensuring that the contents are protected from external factors. This seal is especially crucial for volatile liquids or sensitive products (such as spirits, chemicals, etc.), effectively preventing leakage, oxidation, or contamination, ensuring the product's quality and stability.
Liner Options	The 28mm Aluminum ROPP Cap typically comes with various types of liners, such as foam liners, PVC liners, or paper pulp liners, to enhance the sealing effect against moisture, oxygen, or contaminants. Different liner materials can be selected based on the specific needs of the product, ensuring optimal sealing performance, which extends the shelf life and maintains the freshness and stability of the product.
Material	The 28mm Aluminum ROPP Cap is made from high-quality aluminum, providing excellent corrosion resistance and strength. The aluminum material not only gives the cap durability but also has strong antioxidant properties, maintaining its structural stability over long periods of use. This durability makes it widely used in beverage and chemical packaging.
Customization	The 28mm Aluminum ROPP Cap offers a variety of color options and can be custom printed based on customer needs. This allows brands to incorporate their unique designs into the cap, effectively enhancing product brand recognition and market competitiveness. Custom printing not only meets functional needs but also helps the brand stand out in the market and attract more consumer attention.

28mm Aluminum ROPP Cap Applications

The 28mm Aluminum ROPP Cap is suitable for beverages in aluminum, glass, and plastic PET containers using cold filling, hot filling, carbonating, and pasteurization processes.

Application	Image	Description
Energy Drinks		The 28mm Aluminum ROPP Cap is used for packaging energy drinks. Since energy drinks often contain active and gaseous ingredients, the cap provides a strong seal to maintain the freshness and carbonation of the drink, preventing leaks and ensuring the stability and taste of the beverage during transport and storage.
Carbonated Soft Drinks		The 28mm Aluminum ROPP Cap is widely used for bottling carbonated soft drinks. This cap effectively retains the carbonation in the beverage, preventing the loss of bubbles and maintaining the refreshing taste, ensuring the quality of the beverage is preserved during distribution.
Baijiu (Chinese Liquor)		The 28mm Aluminum ROPP Cap is used for the packaging of Baijiu, effectively preventing oxidation and external contamination, preserving the flavor and aroma of the liquor. Its strong sealing ensures that the alcoholic product remains unaffected by the environment during long-term storage, maintaining optimal quality.
High-Quality Oil		The 28mm Aluminum ROPP Cap is used for sealing bottles of high-quality edible oils, effectively preventing the entry of air and light, which protects the quality of the oil and extends its shelf life. The tamper-evident design also provides additional safety for consumers, ensuring the product has not been contaminated.
Pharmaceuticals		The 28mm Aluminum ROPP Cap ensures a sterile environment in pharmaceutical packaging and prevents tampering. This cap provides excellent sealing to avoid external contamination, ensuring the safety and efficacy of medications, particularly in packaging that requires strict hygiene standards.
Cosmetics/Over-the-Counter Products		The 28mm Aluminum ROPP Cap is widely used in the packaging of cosmetics and over-the-counter products, such as essential oils, disinfectants, and serums. It offers a strong seal to prevent oxidation and deterioration, maintaining the stability of the products. The tamper-evident design ensures the safety of consumers.
Industrial		The 28mm Aluminum ROPP Cap is suitable for packaging chemicals, solvents, or agricultural chemicals, providing an effective seal to prevent harmful substances from leaking, ensuring safety during transportation and storage. The tamper-evident design also prevents misuse or accidental leakage, ensuring the safety of the product.

28mm Aluminum ROPP Cap Customization

Surface Treatment: Available in polished, matte, or textured finishes.
Printing: Branding options through embossing, debossing, or printing logos.
Tamper-Evident Band Types: Single or double score bands for breakage control.

28mm Aluminum ROPP Cap Advantages

Tamper-Evident: The anti-theft design ensures that any tampering is immediately noticeable, thereby enhancing consumer trust.
Compatibility: Suitable for a variety of container materials, including glass, aluminum, and PET bottles.
Process Versatility: Compatible with various filling and processing methods, providing flexibility for production.
Customization: Multi-color caps and custom printing options for effective brand promotion and marketing.
Durability: Aluminum is rust-resistant and maintains integrity under different temperatures.
Sustainability: Fully recyclable, in line with eco-friendly packaging trends.
Consumer Trust: The tamper-evident feature enhances the sense of product security for consumers.

Considerations

Liner Selection: Choose based on product compatibility (e.g., alcohol-resistant liners for spirits).
Regulatory Compliance: Must meet food-grade (FDA/EU) or pharmaceutical standards.
Minimum Order Quantity: Typically sold in bulk (e.g., 10, 000 pieces or more), with custom orders requiring tooling fees.

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