Why Use Aluminum Instead Of Other Metals To Make Foil?

Why Use Aluminum Instead Of Other Metals To Make Foil?

介绍
铝箔随处可见，它是铝及铝合金的薄带，厚度≤0.2mm，其烫印效果与纯银箔烫印相似，因此也被称为假银箔。由于铝质地柔软，延展性好，具有银白色光泽，如果将片材压延后，用水玻璃等物质裱在胶版纸上制成铝箔片材，也可以印刷。铝箔按用途可分为：包装铝箔、空调铝箔、电子铝箔和电池铝箔等。您有没有想过为什么选择铝而不是其他金属来制造箔？

铝箔的历史演变
铝箔的历史可以追溯到 1900 年代初期，当时它最初是为工业应用而开发的。它作为消费品出现于 20 世纪 40 年代第二次世界大战期间，当时这种轻质金属被用来保护士兵的口粮，值得注意的是，早期的军事应用包括使用从轰炸机上掉落的铝箔条来迷惑和误导雷达跟踪系统。铝箔对于国防工作至关重要，因此鼓励家庭保存铝箔条。在许多城镇，甚至可以用收集的铝箔球换取免费进入电影院的门票。到了20世纪70年代，随着彩印技术的成熟，铝箔和铝塑复合包装进入了快速普及时期。20世纪90年代后，

铝的特性使其成为箔材生产的理想材料
轻质且可塑：
铝的密度约为铁的35%，钢的1/3。可用于制造轻型结构，被誉为“飞行金属”。它可以用任何铸造方法铸造。由于其良好的可塑性，可轧制成薄板和箔，拉制成管材和丝材，挤压成各种型材，锻造成各种零件，适用于各种冷、热塑性成型。

良好的导热性和导电性：
铝的导热性和导电性仅次于金、银和铜，约为钢的三到四倍。电工铝在室温下的等效体积电导率可达62%IACS，如果按单位质量的电导率计算，其电导率是铜的两倍。导热系数（0~100℃）为22.609 W/(m?K)。电阻率（20℃）为26.7nΩ·m，电阻温度系数为0.1（nΩ·m）·K-1。制成铝箔可用于食品烹饪、烧烤等。

屏障保护：
Aluminum foil has excellent barrier properties to water, air (oxygen), light, and microorganisms, and can effectively protect food from deterioration. Aluminum foil food packaging bags are high-end packaging in the food industry, with important features and advantages such as high temperature resistance, puncture resistance, and no deformation. Yongsheng Aluminum supply various grades aluminum foil: 1050, 1060, 1070, 1100, 1235, 3003, 3004, 5052, 8006, 8011, 8021, 8079 etc.

Corrosion Resistant And Non-Toxic:
When aluminum metal comes into contact with air, it can naturally form an oxide layer on the surface, which has its own corrosion resistance. This property makes aluminum foil ideal for packaging acidic or alkaline foods, as it prevents the metal from reacting with the contents, thereby maintaining the integrity and safety of the packaged items. Aluminum itself is not toxic, and its dissolution rate is very small when it comes into contact with most foods. At the same time, because the surface is smooth and easy to clean, bacteria are not easy to stay and reproduce.

Recyclability And Sustainability:
Aluminum is the most abundant metal element in the earth's crust, and the third most common material with a wide range of sources. Aluminum foil has certain corrosion resistance, stable chemical properties, long packaging life, and can be recycled and reused. Its cycle energy consumption is only 5% of the original production, which is an economical and sustainable choice.

Aluminum Compared To Other Metals:
While the properties of aluminum make it an excellent choice for foil production, there are also reasons why other metals are not suitable:
Tin: Tin was used in the past as a raw material for tin foil, but was eventually largely replaced by aluminum due to its higher cost and scarcity. Aluminum has replaced tin by offering similar performance at a more affordable price.
Copper: Copper is an excellent conductor of heat, but lacks the same corrosion resistance as aluminum. It can react with certain foods, causing potential health problems.
Steel: Steel is durable and strong, and much heavier than aluminum. Although aluminum is not as strong as steel, it is far more flexible and ductile than steel, which is why aluminum foil can be made very thin.

Yongsheng Signature Aluminum Foil
1235 aluminum foil
The aluminum content of 1235 aluminum foil is not less than 99.35%. Yongsheng Aluminum can process 1235 aluminum foil with a thickness of 0.006-0.2mm. This product is widely used in cables because of its excellent antirust properties, formability, and weldability. tape, battery foil.
8011 aluminum foil
8011-H18 aluminum foil and 8011-O aluminum foil substrate are our company's superior products. Yongsheng Aluminum can process 8011 aluminum foil with a thickness of 0.006-0.2mm. This aluminum foil is mainly used in pharmaceutical packaging, food packaging, aluminum foil tape, cable tape, aluminum bottle cap and other fields, and this grade can also be customized according to customer needs.
8021 aluminum foil
The thickness range of 8021 aluminum foil is 0.006mm-0.2mm, and the width can be controlled at 100-1600mm according to customer requirements. 8021 aluminum foil is the main product of food packaging and battery soft packaging aluminum foil. 8021 aluminum foil has excellent moisture-proof performance, light-shielding and extremely high barrier ability. Non-toxic and tasteless, safe and hygienic. Aluminum foil after compounding, printing and gluing is widely used as packaging material.
During the production process, 8021 aluminum foil has passed multiple tests such as bacteria and mold. The content of heavy metals must not exceed 0.25ppm to ensure that the finished product is non-toxic, tasteless, safe and hygienic. Therefore, 8021 aluminum foil is often used as medicinal aluminum foil, Use aluminum foil for packaging.
8079 aluminum foil
8079铝箔是一种强度高、延伸率和拉伸性好的铝箔。永盛生产的8079铝箔具有食品级、除油干净、针孔少、产品形状好、切割时不变形等多重优点。

结论
综上所述，铝是一种轻质金属，具有良好的导热性和耐腐蚀性，是制造铝箔的理想材料。铝的化学性质也影响铝箔的生产，如其良好的塑性和延展性，使得铝块可以冷轧或热轧成各种不同厚度的铝箔，并且流变应力低，使得易于通过辊拉伸形成薄片。这些化学特性共同使铝成为坚韧、柔韧且耐用的箔材。无论是在日常烹饪、医药、工业、建筑还是许多其他领域，您都可以找到铝箔。