Aluminum Screw Caps

1. Specifications for Aluminum Screw Caps
2. Aluminum Screw Caps Advantage
3. Commonly used Aluminum Screw Caps
4. How to Choose Aluminum Screw Caps

Aluminum screw caps are a type of airtight bottle caps commonly used in the beverage industry. These bottle caps are made of aluminum and have a thread to easily screw on and off the bottle.

Specifications for Aluminum Screw Caps

Exact dimensions or specifications for aluminum screw caps may vary by application and container size. Here are examples of common specifications for different types of nuts:

• Wine bottle screw caps - typically 30mm - 31.5mm in diameter and 18mm - 22mm in height, lined with Saranex or similar to provide a secure seal.
• Cosmetic bottle screw caps - typically 15mm - 89mm in diameter and 8mm - 20mm in height, lined with foam or similar material to provide cushioning and prevent product leakage.
• Pill bottle screw cap - typically 13mm - 38mm in diameter and 9mm - 18mm in height, lined with PE foam or similar material to provide an airtight seal.
• Beverage bottle screw caps - typically 28mm - 38mm in diameter and 15mm - 28mm in height, lined with EVA or similar material to provide a leak-proof seal.
• Oil bottle screw caps - typically 18mm to 31.5mm in diameter and 9mm to 22mm in height, lined with PE foam or similar to prevent leaks and contamination.

These are general specifications only and may vary by specific product and manufacturer. It is important to select the proper screw cap based on vessel size, application and performance requirements.

Aluminum Screw Caps Advantage

• The aluminum screw cap provides an airtight seal, maintaining the quality and freshness of the bottle's contents.
• Lightweight, durable and corrosion resistant, ideal for the food and beverage industry.
• It is easy to open and close for the convenience of consumers.
• The aluminum screw cap is environmentally friendly. They are fully recyclable, reuse to create new products and reduce waste.
• Various sizes and colors are available to meet different packaging needs.
• They can be printed with branding or other information, making them an effective marketing tool for beverage companies.

Commonly used Aluminum Screw Caps

8011 Aluminum Screw Caps

Aluminum Screw Caps are usually machined from 8011 Aluminum Closure, 8011 aluminum is known for its good formability, corrosion resistance and strength, making it an ideal material for screw caps.

Alloy 8011 is typically used in the annealed (O) or soft tempered condition, which provides good ductility and allows lids to be easily formed and sealed to containers. However, harder tempers (such as H14 or H16) are also available for applications requiring greater strength and durability.

Overall, the specific alloys and tempers used for aluminum screw caps may vary depending on the application and performance requirements. However, Alloy 8011 in its soft temper is a common and versatile choice for many different types of nuts.

3105 Aluminum Screw Caps

3105 Aluminum Closure is a common Aluminum Screw Caps material. 3105 aluminum has good corrosion resistance, good toughness, and is not easy to break, which can ensure the integrity and sealing of the cap.

The cost of 3105 Aluminum Screw Caps is lower than other aluminum alloy caps, so in the case of cost considerations, 3105 Aluminum Screw Caps are an ideal choice.

• Beverage bottle caps: 3105 aluminum coils in H16 state are generally used to ensure the wear resistance and sealing performance of the caps.
• Food bottle caps: 3105 aluminum coils in H14 state are generally used to ensure the flexibility and processing performance of the caps.
• Pharmaceutical bottle caps: 3105 aluminum coils in H16 state are generally used to ensure the corrosion resistance and sealing performance of the caps.
• Chemical bottle caps: 3105 aluminum coils in H16 state are generally used to ensure the corrosion resistance and wear resistance of the caps.

In general, the choice of 3105 aluminum alloy cover or 8011 aluminum alloy cover should be determined according to the specific application, and cover materials with different performance and price should be selected according to the needs.

How to Choose Aluminum Screw Caps

Corrosion Resistance

AA 8011 alloy is more corrosion resistant than AA 3105 alloy, so it is more suitable to choose Aluminum Screw Caps of AA 8011 alloy when the use environment is relatively harsh.

Cost

AA 3105 alloy is cheaper than AA 8011 alloy, so it is more suitable to choose Aluminum Screw Caps of AA 3105 alloy in the case of cost-sensitive.

If it is necessary to reduce the cost when producing Aluminum Screw Caps in large quantities, it is more suitable to choose Aluminum Screw Caps of AA 3105 alloy, because AA 3105 alloy is cheaper than AA 8011 alloy.

Strength

AA 8011 alloy has higher strength than AA 3105 alloy, so it is more suitable to choose Aluminum Screw Caps of AA 8011 alloy when higher strength is required.If the closure of the produced beverage bottle requires higher strength, it will be more suitable to choose Aluminum Screw Caps of AA 8011 alloy.

Use Environment

If the beverage packaging produced will be transported to a relatively humid environment, it will be more suitable to choose Aluminum Screw Caps of AA 8011 alloy, because AA 8011 alloy has better corrosion resistance.