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Tsing’s Inspection Instruction Standard on Metal Tin Cans Finished Production

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In our last blog, we mentioned Tsing’s Inspection Instruction Standard on Metal Tin Cans Tinplate Printing, and in this article, let’s talk about Tsing’s Inspection Instruction Standard on Metal Tin Cans Tinplate Finished Production.

In addition to the GB/T 230.1-2009 Metallic Rockwell hardness test, Tsing has our own inspection standards on tinplate, and Tsing divides the inspection into 3 kinds, that are critical defect, major defect, and minor defect. And the inspection usually contains 3 sides, including size, color, printing.

You can check the detailed inspection standards at below chart.

Tsing’s Inspection Instruction for Finished Tin Box
Testing Item Critical Defect Major Defect Minor Defect
Height Inconsistent height dimension 1.Tin Lid: Positive and negative deviations≥0.3mm
2.Tin Body: Positive and negative deviations≥0.5mm
3.Whole Tin: Same as above
4.The height is obviously less than the sample.		 1.Tin Lid: Positive and negative deviations＜0.3mm
2.Tin Body: 0.3mm<Positive and negative deviations<0.5mm
3.Whole Tin: Same as above
Color Wrong Color Serious color difference Slight color difference
Poor Printing Color Deviation 1.More glossy or matte
2.Big and many ink dots
3.Nesting deviation is visible by naked eyes
4.Obvious printing overlap
5.Scratches and stains in the bar code area		 1.Small and less ink dot
2.Nesting deviation can only be seen when carefully
3.Printing overlap can only be seen when carefully
Direction 1.Wrong tin lid/body hinge direction
2.Reversed tin body images
3.Reversed bottom direction
4.Wrong lid direction		 1.Unaligned lid, body and bottom images, words and line,or serious line misalignment 1.Slight line misalignment

As a customized tin box manufacture, Tsing knows that every customer has their own inspection standards on their customized tin boxes and wants to get the best quality tin packaging at the best price. So we made out a series of inspection standards on tinplate production according to our customer’s requirements. When cooperate with Tsing, please don’t worry about product quality issue, Tsing will provide you with the highest quality tin packaging boxes. And usually Tsing will provide customers with extra tin boxes to our customers as spare free of charge.