In addition to testing the appearance, size, compressive strength, axial bearing pressure, and inner coating quality of cans, there are the following necessary testing items.
Integrity Of Inner Coating Film
The integrity test of the inner coating film of the aluminum can actually detects the electrical conductivity, which can reflect the integrity and compactness of the inner coating film by measuring the current value in the electrolyte. If the integrity of the inner coating film is unqualified, it will affect the flavor and appearance of the product; perforation and leakage may occur after a certain period of storage.
Easy Open End Dimensions
Dimensional deviation mainly refers to length deviation, width deviation, thickness deviation, etc. should be within the specified deviation range. By doing this, you can understand the specifications of the easy-open end you produce and know whether it meets the technical requirements of the sample seal.
Pop Force& Push Force
The pop force is the force required to "tear" the can lid at the moment of opening, and the push force is the force required after the can lid is fully opened. For the aluminum cans, we have to say that the opening force of the pull ring on the top directly affects the user experience. If it is too tight, it is not easy to open, and if it is too loose, it will easily leak and deteriorate.
Lining Compound Weight
Weigh the dry film of the easy open end sealant. The dry film of sealing glue can improve the sealing performance of aluminum cans and prevent the moisture and oxygen in the air from affecting the liquid.
