Heat sealing foil is a special type of aluminum foil that is combined with other materials through a heat-sealing process and is widely used in packaging products such as food, medicine, and cosmetics. Aluminum foil has excellent sealing and corrosion resistance, as well as heat-sealing properties to protect the contents inside. The packaging effectively isolates the influence of external moisture, oxygen, dust and bacteria. It has excellent corrosion resistance and is not easily corroded by chemical substances, which can extend the shelf life and freshness of the product.
MC Aluminum provides 8011, 1235, and 8079 aluminum foil for heat seal packaging, which can produce thicknesses of 0.025-0.05mm and widths of 50-1600mm. Widely used in pp cap sealing, yogurt cap sealing, vacuum packaging sealing, blister packaging, etc.
Heat sealing aluminum foil specifications:
| Alloy | 8011,1235,8079 |
| Temper | O,H18,H22,H24 |
| Thickness | 0.025-0.05mm |
| Width | 50-1600mm |
| Surface treatment | degreasing, embossing, printing, coating |
| I.D | 76mm/152mm |
Heat sealing aluminum foil performance advantages:
1. Strong barrier, moisture-proof, light-blocking, fragrance-preserving, extending product shelf life and freshness.
2. Excellent mechanical properties, high resistance to blasting, puncture and tearing.
3. Excellent formability, can print text and patterns, rich colors, and beautiful appearance.
4. Non-toxic and odorless, safe and hygienic, environmentally friendly and recyclable.
5. High and low temperature resistance, suitable for high-temperature cooking and sterilization.
6. The surface is smooth and clean, the color is uniform, smooth and burr-free, and there is no black silk. The unwinding performance is good and the adhesion meets the requirements.
Chemical composition of heat-sealed aluminum foil:
| Element | Chemical composition (%) | ||
| 8011 | 1235 | 8079 | |
| Al | Reminder | 99.3.5 | Reminder |
| Si | 0.50-0.90 | 0.65 (Si+Fe) | 0.50-0.90 |
| Fe | 0.60 - 1 | 0.70-1.3 | |
| Cu | ≤ 0.10 | ≤ 0.05 | ≤ 0.05 |
| Mn | ≤ 0.20 | ≤ 0.05 | ≤ 0.05 |
| Mg | ≤ 0.050 | ≤ 0.05 | ≤0.05 |
| Cr | ≤ 0.050 | - | - |
| Zn | ≤ 0.10 | ≤ 0.10 | ≤ 0.10 |
| Ti | ≤ 0.080 | ≤ 0.06 | - |
| Mechanical Properties | ||||
| Alloy | Temper | Tensile strength Rm/MPa | Elongation A50mm（%）≥ | Elongation A100mm（%）≥ |
| 8011 8079 | 0 | 50-120 | 13-15 | 0.5-4 |
| H22 | 90-150 | 5-6 | 1.0-2.0 | |
| H24 | 120-170 | 2-5 | - | |
| H26 | 140-190 | 1-2 | - | |
| 1235 | H14 H24 | 110-160 | 4-6 | 2-3 |
| H16 H26 | 125-180 | 2 | 1 | |
In short, heat-sealing aluminum foil, as an efficient sealing material, plays an important role in food, medicine, cosmetics and other fields. With the continuous advancement of technology and people's increasing requirements for packaging quality, heat-sealing aluminum foil will continue to be widely used and developed.