Testing standards for the quality of tin cans

Shangzhimei Tin Can Factory mainly produces various types of tinplate cans such as square cans, round cans, etc. Let's take a look at the quality standards for making tin cans.

 tin can testing standard

This standard specifies the production technical requirements, test methods, inspection rules and requirements for marking, packaging, transportation and storage of tin cans. It is suitable for canned food, biscuits, dried fruits, chocolate as raw materials, processed, canned, sealed and sterilized.

       The surface of the tin can must be smooth and clean, and no obvious foreign matter or debris should be attached. The can body must not have edges, corners, or burrs. The pattern and text on the outer surface should be free from severe scratches, scratches, patterns on the surface, and the ink color of the text. The color of the ink should be correct and evenly bright. Unfavorable problems such as burrs, bubbles, uneven paint, etc.

   The printing pattern and text content of the tin can should be consistent with the sample plate, and there should be no overprinting or missing printing. The pattern and text are overprinted accurately, and the overprinting inaccuracy is not more than 0.5mm. The tin layer on the tank wall and the sealing edge should be complete, free of tin piles and rough tin roads, no obvious scratches and rust, and no leakage caused by blisters.

   There should be no quick mouths, false curls and large sags in the curling part of the tin can, and there should be no incomplete curling, curling teeth, iron tongues, jumping seals, curling cracks, filling extrusion, sharp edges, vertical lips, Double lines and other defects caused by the failure of the indenter and curling roller. Easy-open cans are required to be evenly marked, and there is no phenomenon that the lid cannot be opened due to poor marking or the easy-pull ring is welded to death. The easy pull ring of the easy open can and the lower edge line of the easy open lid curling should be in the same horizontal plane, and shall not exceed.

   The welding seam of the round iron tank should be smooth and beautiful, the overlap joint should be uniform, the welding joints should be evenly connected, and there should be no poor welding and breakdown. . The repair coating tape for circular tank joints should be smooth and uniform, completely cover the weld and the left part, solidify completely, without large bubbles and iron dew points. The coating of the round tank should be free of falling off, internal flow of glue, iron sulfide, serious vulcanization spots, and oxidation circles. The shape of the round tank should be complete, and there should be no deformation such as flat tanks or sharp corners.