What are the quality testing standards for PET thermosensitive matte silver paper?

The quality testing standards for PET thermal matte silver paper may involve several aspects, and these standards are usually designed to ensure that the product meets specific performance requirements, safety and environmental standards. Although the specific quality testing standards directly for PET thermal matte silver paper may vary by region, industry or manufacturer, you can refer to some common paper and thermal paper quality testing standards, and combined with the characteristics of PET materials to comprehensively evaluate. The following are some quality testing standards that may be relevant:

First, basic physical properties

1.Quantitative: According to the "quantitative determination of paper and cardboard" (GB/T 451.2) and other standards, determine the unit area quality of PET thermal matte silver paper to ensure that it meets the specified requirements.

2.Thickness: The thickness of paper is measured according to standards such as "Determination of Thickness of Paper and Board" (GB/T 451.3) to assess its compactness and consistency.

3.Tensile strength: According to the "determination of tensile strength of paper and paperboard" (GB/T 12914) and other standards, test the maximum tensile force that the paper can withstand before breaking to evaluate its mechanical strength and durability.

4.Tear: According to the "tear determination of paper and board" (GB/T 455) and other standards, determine the force required when the paper is torn to evaluate its tear resistance.

Second, thermal sensitivity

1.Static color performance: Evaluate the color rendering effect of PET thermosensitive matte silver paper under a constant heat source, including color rendering speed, color rendering density and uniformity.

2.Dynamic color performance: Test the color stability and consistency of the paper in the printing process to ensure that the print quality meets the requirements.

Third, optical performance

1.Brightness/whiteness: Although PET thermal matte silver paper may not be characterized by high whiteness, its brightness or reflectivity still needs to meet the needs of specific application scenarios. You can refer to the "paper and board whiteness determination method" (GB/T 7974) and other relevant standards.

2.Opacity: Opacity is an important metric for labels that need to hide underlying information. Test according to standards such as "Determination of Opacity of Paper and board" (e.g. GB/T 1543).

Fourth, environmental protection and safety performance

1.Content of harmful substances: Detect whether the PET thermal matte silver paper contains heavy metals, bisphenol A and other harmful substances to ensure that the product meets environmental protection and safety standards. In particular, the newly released "thermal paper" (GB/T 28210-2024) standard has increased the safety index requirements for bisphenol A content.

2.Degradability: For environmentally friendly PET thermal matte silver paper, it may be necessary to evaluate its degradability under certain conditions.

Fifth, special performance

1.Weather resistance: Test the durability of PET thermosensitive matte silver paper under different environmental conditions, such as high temperature resistance, water resistance, oil resistance and other properties.

2.Friction resistance: Evaluate the resistance of the paper surface to wear when subjected to friction to ensure that the label is not easily damaged during long-term use.

3.Adhesion: For PET thermal matte silver paper labels that need to be pasted, adhesion is an important indicator. Test its adhesion and durability on different surfaces.

Sixth, customized detection

Depending on the specific needs of the customer, other customized inspection items may be required, such as color stability, barcode/QR code readability testing, etc.

Please note that the quality testing standards listed above are not all for PET thermal matte silver paper, but are summarized according to the general quality testing requirements for paper and thermal paper. In practical applications, appropriate testing standards and methods should be selected according to the specific characteristics and uses of the product. At the same time, it is recommended to refer to relevant industry standards, national standards or international standards for more accurate testing requirements.