Silk refers to the unit of measurement for calculating the thickness of plastic packaging bags? (Digital Multimeter). Conversion formula of unit length: 1 mm? (mm)= 10 silk? (dmm)= 100？ (cmm, also called "silk") = 1000 micro? . For example, the state stipulates that the thickness of plastic bags in supermarkets is not less than 0.025 mm? , that is, not less than 0.25 silk? /2.5 Suddenly? .

Thickness of conventional plastic packaging bag:

1, ordinary thin bag: the total thickness of double-layer bag wall is less than 5 lines, commonly known as "thin".

2. Medium-thick bag: when the total thickness of double-layer bag wall is between 6 lines and 10 line, it is "medium-thick".

3. Thickened bag: "Thickened" when the total thickness of double-layer bag wall is between 10 and 19.

4. Extra-thick bag: when the total thickness of double-layer bag wall is more than 20 lines, it is "extra-thick".