Aluminum Foil for Bottle Shrink Caps

2025-01-23 08:45:45

Al metal alloy	8011, 8079 etc
Alu temper	O – H112, T3 – T8, T351 – T851 etc
Width	250mm – 1280mm
Thickness	0.009mm – 0.3mm

What is Aluminum Foil for Bottle Shrink Caps?

The aluminum foil used in bottle caps is a hot stamping material, calendered into thin sheets of metallic aluminum. It provides a hot stamping effect similar to pure silver foil, often referred to as “fake silver foil.” Bottle cap aluminum foil has exceptional moisture resistance, shading, and high barrier properties, making it ideal for food and beverage packaging. Its clean, uniform color and spotless surface ensure top-notch safety and hygiene standards, which are critical for consumer products.

Common Applications

Medical caps
Beer caps
Yogurt caps

Different applications require varying levels of performance, which dictate the aluminum alloy used.

8021 Aluminum Foil: Ideal for bottle caps requiring superior drawing performance.
8011 Aluminum Foil: Commonly used in yogurt and other food-grade caps.

Features of Aluminum Foil for Bottle Caps

Custom embossing or debossing of logos.
Stock availability for various sizes, such as 20mm vial caps.
Free samples and customizable colors and logos.
High-quality surface suitable for hot foil, embossing, silkscreen printing, and multi-color designs.
Environmentally friendly and recyclable material.
Superior barrier qualities and formability.
Adherence to ISO 9001 quality management standards.

Applications of Aluminum Foil in Bottle Caps

Bottle cap foils are versatile and cater to a wide range of closures, such as:

Screw caps for whiskey and beverage bottles.
Aluminum closures for wine bottles.

Parameters of Bottle Cap Aluminum Foil

Chemical Composition

8011 Aluminum Alloy

Element	Range (%)
Si	0.50 ~ 0.90
Fe	0.60 ~ 1.00
Cu, Mg, Zn, Mn, Cr, Ti, Others	≤ 0.2 (individually)
Al	Remainder

8021 Aluminum Alloy

Element	Range (%)
Si	≤ 0.5 ~ 0.9
Fe	≤ 0.6 ~ 1.0
Cu, Mg, Zn, Mn, Cr, Ti, Others	≤ 0.2 (individually)
Al	Remainder

Thickness Categories

Aluminum foil is classified based on its thickness:

Thick Foil (“Heavy Gauge Foil”): 0.1–0.2mm.
Medium Gauge Foil: 0.01–0.1mm.
Double Zero Foil (“Light Gauge Foil”): Thickness < 0.01mm, typically 0.005–0.009mm.

Processing Technology

Aluminum foil can be produced in three different states:

Hard Foil:
- Not annealed, retains high strength.
- Requires degreasing before printing or coating.
Semi-Hard Foil:
- Intermediate strength.
- Suitable for forming processes.
Soft Foil:
- Fully annealed for maximum softness.
- Oil-free surface, widely used in packaging and composite applications.

Our aluminum foil products are used in a wide variety of industries and applications, including packaging, automotive, construction, electronics and household. Here are some examples of applications: