8011 aluminum foil and 8021 aluminum foil are both popular types of aluminum foils used for various applications, but they have some differences in their chemical composition and properties. Here’s a comparison based on key factors:

องค์ประกอบของโลหะผสม:

8011 อลูมิเนียมฟอยล์: It is a typical alloy of the 8xxx series and contains aluminum as its primary element with small amounts of other elements like iron, ซิลิคอน, และทองแดง.
8021 อลูมิเนียมฟอยล์: It also belongs to the 8xxx series and is an alloy that consists of aluminum as the primary element, with additional elements such as iron, ซิลิคอน, and other trace elements.

แอปพลิเคชัน:

8011 อลูมิเนียมฟอยล์: This type of foil is commonly used in various packaging applications, such as for food packaging, บรรจุภัณฑ์ยา, and household foil.
8021 อลูมิเนียมฟอยล์: It is specifically used for blister packaging in the pharmaceutical industry due to its excellent barrier properties against moisture, ออกซิเจน, และแสงสว่าง.

Mechanical Properties:

8011 อลูมิเนียมฟอยล์: It has good mechanical properties, making it suitable for general-purpose packaging requirements.
8021 อลูมิเนียมฟอยล์: This foil has higher tensile strength and elongation compared to 8011 foil, which is crucial for blister packaging that requires easy formation and sealing.

คุณสมบัติของสิ่งกีดขวาง:

8011 อลูมิเนียมฟอยล์: It provides a moderate barrier to moisture, แสงสว่าง, and gases, making it suitable for standard packaging needs.
8021 อลูมิเนียมฟอยล์: Due to its enhanced barrier properties, it is an excellent choice for pharmaceutical blister packaging, protecting drugs from external elements.

Softness:

8011 อลูมิเนียมฟอยล์: It has a relatively softer structure, making it easy to bend and fold for various packaging applications.
8021 อลูมิเนียมฟอยล์: This foil is slightly harder than 8011, but it remains pliable enough to be formed into blister packs without compromising the barrier properties.

ค่าใช้จ่าย:

8011 อลูมิเนียมฟอยล์: It is generally more cost-effective compared to 8021 foil, making it preferable for cost-sensitive applications like household foil.
8021 อลูมิเนียมฟอยล์: Being specialized for pharmaceutical blister packaging, it may be more expensive than 8011 foil due to its unique properties.