Stock code: 601677
Stock code: 601677
Aluminum foil 0.02mm, or 20 microns, holds a unique position in the thickness spectrum. It falls into the “single‑zero” category – foils from 0.01 mm to under 0.1 mm. Thinner than a human hair (roughly 60–100 microns), yet thicker than “double‑zero” grades, it offers a practical balance: light enough to save material cost, but robust enough to deliver reliable strength and barrier performance.
This gauge is found everywhere – from medicine blister packs and chocolate wrappers to lithium‑battery films.
Why? Because it hits the sweet spot between performance and economy.
One of the most critical uses. For PTP blister foil, alloys 8011 and 8079 in 0.02 mm are industry standards. Medicines are highly sensitive to oxygen, moisture, and light; the complete opacity and excellent barrier of aluminium foil directly protect drug efficacy. Compared with 18 μm foil, 0.02 mm offers lower pinhole risk and more stable forming; compared with 25 μm, it is more cost‑effective.
Chocolate, candy, dairy products, and even household cooking foil often use 0.02 mm 8079 or 8011 foil. It provides moisture‑proof, light‑proof sealing, and the soft temper makes it easy to wrap or shape.
In soft‑pack lithium batteries, 0.02 mm 8079 foil serves as the barrier layer in aluminium‑plastic laminate. It keeps moisture and oxygen away from the cell. After double‑side passivation, the foil bonds firmly and resists electrolyte attack.
Electrode foils for aluminium electrolytic capacitors often range from 0.02 to 0.1 mm. The same thickness is also used in adhesive tape backing, cable wrapping, and honeycomb core materials.
Not every alloy behaves the same at this thin gauge. Here is a quick comparison:
1. 8079 (Al‑Fe‑Si series) – Optimised iron and silicon ratios give superior pinhole control, tensile toughness, and surface flatness. It is gradually replacing 1100 and 1235 for pharmaceutical, battery, and high‑end food applications. Typical thickness starts from 0.02 mm up to 0.2 mm.
2. 8011 (Al‑Fe‑Si series) – A versatile, cost‑effective workhorse for general packaging. Total iron + silicon content is kept between 1.0% and 2.0%, and it can be rolled down to 0.02 mm. Common pharmaceutical thicknesses are 0.02, 0.022, and 0.025 mm.
3. 1100 (commercially pure aluminium) – Minimum aluminium content 99.0%. At 0.02 mm and above, it provides a good mix of flexibility, stiffness, and economy. Suitable for flexible composite packaging and tape backings.
4. 1235 (high‑purity aluminium) – Aluminium content no less than 99.35%, with good corrosion resistance and formability. Widely used in cable wrap, tape, and household foil.
A quick rule of thumb:
For pharmaceutical and premium food packaging, choose 8079. For general packaging and tape, 8011 or 1100 works well. For cooking foil, 1235 or 8011 is fine.
– Pinhole rate – This is the most critical indicator for ultra‑thin foil. For pharmaceutical foil, the common requirement is no more than 1 pinhole (0.1–0.3 mm diameter) per square metre. Pinholes are through‑holes that let oxygen and moisture in, ruining the contents. Quality 0.02 mm foil should have extremely low or near‑zero pinhole counts.
– Thickness tolerance and customisation – Width can be slit from 100 mm to 1600 mm as required. The most common temper is O (fully soft annealed), but H18 (hard) and other tempers are also available.
This gauge is often called the “golden thickness” because it balances performance, cost, and versatility. Whether for pharmaceutical barriers, battery protection, or food safety, this 20‑micron sheet plays an indispensable role. Choosing the right aluminum foil 0.02mm supplier ensures consistent quality and stable supply.
Henan Mingtai Aluminum produces aluminium foil from 0.02 mm upward, supporting multiple alloys, tempers, and width customisation. For more details, feel free to reach out.
1. How thick is 0.02 mm aluminium foil? – It is 20 microns – much thinner than a human hair (about 60–100 microns).
2. What are the main uses of this gauge? – Pharmaceutical blister packs, food packaging, lithium‑battery films, capacitors, tape, and cable wrap.
3. Which alloy is best for 0.02 mm? – 8079 for pharma and high‑end food; 8011 or 1100 for general packaging and tape; 1235 or 8011 for cooking foil.
4. What temper is most common? – O temper (fully soft annealed); H18 and other tempers are also available.
5. What thickness tolerance is typical? – It varies by application, but industrial standards often aim for ±5% or better.
6. Can the width be customised? – Yes, widths from 100 mm to 1600 mm can be slit to order.
7. Why is pinhole rate so important? – Pinholes are through‑defects that break the barrier, letting moisture and oxygen spoil the contents.
8. Are samples available? – Yes, free samples are usually offered, though shipping costs may apply.
