Aluminum Sheet for Liquor and Beverage Anti-Theft Caps

Aluminum sheet for liquor and beverage anti-theft caps, also known as ROPP cap stock, is a specialized substrate for twist-off aluminum caps used for Chinese baijiu, red wine, spirits, fruit wine, and other beverages. It is a core raw material for high-speed cap manufacturing processes, including stamping, deep drawing, thread rolling, and tamper-evident breakaway structure forming.

HAOMEI Aluminum supplies three major alloy grades for liquor and beverage anti-theft caps: 8011, 3105, and 1060 aluminum sheet. Available thicknesses range from 0.15 to 0.5 mm, widths range from 100 to 1,600 mm, and available tempers include H14, H16, H18, and H24.

Produced using advanced hot rolling and cold rolling processes, our aluminum closure sheets provide excellent deep-drawing elongation, uniform thickness tolerances, and outstanding coating and printing performance. They are specifically designed for the production of knurled anti-theft caps (ROPP caps), premium shaped caps, and combination tamper-evident closures.

Alloy Selection Guide

8011 — Preferred Alloy for Liquor and Beverage Anti-Theft Caps

8011 is an Al-Fe-Si alloy and one of the most established materials used in the liquor anti-theft cap industry. It offers excellent deep-drawing performance and a low earing rate. After work hardening, it provides the strength and hardness required for bottle caps.

After stamping, 8011 cap bodies maintain stable dimensions and are less likely to crack or deform. 8011-H16 is a typical temper for aluminum anti-theft caps, with a tensile strength of approximately 130–165 MPa and elongation suitable for deep drawing.

After surface treatment, 8011 provides good anodizing and coloring performance. It is suitable for premium liquor caps requiring anodizing or coating, including caps for baijiu, red wine, and PP/ROPP closures.

3105 — Balanced Choice for Deep Drawing Performance

3105 is an Al-Mn rust-resistant aluminum alloy with good deep-drawing performance, as well as suitable tensile and yield strength. Its earing rate can be controlled consistently.

For liquor and beverage anti-theft caps requiring greater stamping depth or more complex cap structures, 3105 provides good forming tolerance. It is suitable for mid- to high-end alcohol packaging applications requiring a certain level of strength.

1060 — Cost-Effective Basic Option

1060 is commercially pure aluminum with an aluminum content of at least 99.6%. It offers moderate strength and is suitable for stamping processes. 1060-H24 is commonly used in bottle cap manufacturing and has an obvious cost advantage.

It is suitable for standard liquor and beverage closures where decorative appearance requirements are relatively conventional and sealing performance is the primary concern.

Quick Selection Guide

Baijiu and red wine anti-theft caps: 8011-H16 is preferred; it balances deep drawing performance and anodizing results and is the industry mainstream choice.

Complex cap shapes or higher strength requirements: Select 3105.

Cost-sensitive standard liquor caps: Select 1060-H24.

Core Performance Advantages

1. Crack-Free Deep Drawing and Low Earing Rate

Through optimized composition control, rolling, and annealing processes, the earing rate can typically be controlled within 3%. After deep drawing, the cap body maintains uniform wall thickness and stable roundness, improving finished-product yield and reducing material waste and machine adjustment downtime.

2. Clean Surface with Excellent Printing and Anodizing Results

The surface is flat, smooth, and clean, without obvious roller marks, scratches, oil stains, or black streak defects. The 8011 alloy performs well in alkaline washing and can achieve Grade A water-brush test performance. After anodizing, the color is uniform and suitable for hot stamping, screen printing, anodizing, and other decorative processes.

3. High Thickness Accuracy for Stable Stamping

Typical thickness tolerance is ±0.005 mm, and typical width tolerance is ±1 mm. High material consistency allows cap-making machines to run continuously and stably after setup, reducing frequent adjustments caused by raw material variation.

4. Food-Contact Safety

The material can meet relevant standards for aluminum materials intended for food contact. It is thoroughly degreased, odorless, non-toxic, and does not release harmful substances, meeting sanitary requirements for the packaging of baijiu, wine, beverages, and related products.

5. Balanced Strength and Formability

8011-H16 and 3105-H16 balance deep-drawing formability with cap rigidity. After sealing, they provide stable opening torque and a consistent opening feel, helping avoid sealing failure caused by excessive softness or cracking caused by excessive brittleness.

6. Excellent Corrosion Resistance, Sealing, and Tamper Evidence

The material has good chemical stability against ethanol, trace acids in alcoholic beverages, and printing fountain solutions, reducing the risk of oxidation and discoloration. During opening, tamper-evident bridges break evenly and clearly, helping protect beverage quality and brand anti-counterfeiting security.

Product Specifications

Processing Methods for Aluminum Bottle Cap Sheet

Deep Drawing Forming

8011, 3105, and 1060 all have good deep-drawing plasticity and are suitable for one-step or multi-step deep drawing of twist-off anti-theft caps. The temper should be selected according to cap depth. For caps with a greater drawing depth, 3105 or 8011-H16 is generally preferred.

Surface Treatment

The materials support subsequent processes such as anodizing, coating, hot stamping, and screen printing. 8011 provides especially uniform anodizing and coloring performance, making it suitable for premium liquor caps with high appearance requirements.

Coating and Internal Lacquering

Pre-coated aluminum strips or aluminum strips with internal coatings can be supplied according to customer requirements. Coatings must comply with food-contact requirements. We supply the aluminum substrate; coating may be completed by the customer or arranged through compatible processing resources.

Slitting and Delivery

Precision edge trimming and slitting are available according to the width requirements of the customer's cap-making equipment. Coil outer diameter, inner diameter, and coil weight can be customized based on equipment requirements.

Main Application Fields

1. Baijiu Anti-Theft Caps

Used for baijiu, sauce-aroma baijiu, strong-aroma baijiu, light-aroma baijiu, and other mid- to high-end liquor packaging. Aluminum anti-theft caps can be processed through color printing, hot stamping, embossing, relief decoration, laser effects, and spot varnishing to meet the appearance and anti-counterfeiting requirements of branded liquor packaging.

2. Wine and Red Wine ROPP Caps

ROPP aluminum screw caps are widely used for wine, red wine, sparkling wine, fruit wine, and imported alcoholic beverages. They offer stable sealing performance, convenient opening, and an attractive appearance, making them a practical alternative to some traditional cork closure systems.

3. Caps for Imported Spirits, Distilled Liquor, and Health Liquor

Suitable for whisky, vodka, brandy, liqueur, medicinal liquor, health liquor, and other glass-bottled alcoholic beverages. They can be used with different liners, sealing inserts, tamper-evident rings, and decorative finishing processes.

4. Beverage and Mineral Water Caps

Suitable for juice drinks, tea beverages, functional drinks, soda water, mineral water, and glass-bottled beverages. Aluminum anti-theft caps provide good sealing, pressure resistance, and printing/decorative performance.

5. Caps for Condiments and Edible Oils

Can be used for soy sauce, vinegar, cooking wine, olive oil, edible oils, seasoning sauces, and other food packaging products. Depending on the product contents, caps can be combined with acid-resistant, oil-resistant, or corrosion-resistant internal coatings.

6. Pharmaceutical and Health Product Packaging Caps

Suitable for certain oral liquid products, health beverages, medicinal liquor, nutritional liquids, and related bottled products. For pharmaceutical and food-contact applications, materials, coatings, and sealing components should be selected in compliance with applicable product regulations and hygiene requirements.

FAQ

Q1: Do you supply finished bottle caps or raw materials?

A: We supply aluminum sheet and strip raw materials in coil or sheet form. We do not produce finished bottle caps. Customers can carry out deep drawing, coating, anodizing, printing, and other forming processes according to their own cap-making procedures.

Q2: Which alloy is recommended for baijiu caps and wine caps?

A: For baijiu anti-theft caps, 8011-H16 is preferred because it balances deep-drawing performance and anodizing/coloring results; it is the mainstream industry choice. For wine ROPP caps, the 8011 series is also suitable. If the cap is deeper or requires higher strength, 3105 may be selected. For cost-oriented standard products, 1060-H24 can be considered.

If you are unsure, please provide the cap structure, stamping depth, and surface treatment requirements. We will help recommend a suitable material.

Q3: What is the earing rate, and how does it affect cap production?

A: The typical earing rate is controlled at ≤3%. An excessive earing rate can create uneven cap edges and roundness deviations after deep drawing, increasing trimming requirements or even scrap rates. A low earing rate means a rounder cap body after stamping and higher material utilization.

Q4: What is the minimum order quantity? Can I obtain samples for trial stamping?

A: Small trial orders and sample delivery are supported. Samples can be provided as small coils or sheets for trial stamping and coating. The MOQ for bulk orders depends on the alloy, thickness, and width. Please contact us for a quotation.

Q5: Can you provide food-grade testing reports?

A: A material certificate containing chemical composition and mechanical properties can be supplied with the goods. Food-contact safety testing, such as testing under the GB 4806 series standards, can be commissioned through a third-party laboratory according to customer requirements. The cost and testing lead time will be confirmed separately.

Q6: What is the delivery time?

A: Regular in-stock specifications generally require approximately 7–15 working days. Non-standard thicknesses, widths, or special tempers generally require approximately 20–30 working days. The final delivery time is subject to the production schedule confirmed when the order is placed.

Q7: Can you slit the material to my required width?

A: Yes. Precision edge trimming and slitting are available according to your cap-making machine requirements. Available widths range from 100 to 1,600 mm, with a typical width tolerance of ±1 mm. Please provide the required coil width, coil inner diameter, and coil weight requirements.