How to evaluate the quality of BOPP thermal sensitive synthetic paper?

BOPP (biaxially oriented polypropylene) thermal sensitive synthetic paper is a special type of paper coated with a layer of thermal sensitive material on its surface, which can display text and images when heated by a thermal print head. When evaluating the quality of BOPP thermal sensitive synthetic paper, the following aspects can be considered:

1、 Physical performance indicators

Thickness: The thickness of the paper should be uniform and meet the standard requirements. The uniformity of thickness has a significant impact on printing quality and durability.

Strength: including tensile strength and tear strength. Tensile strength reflects the ability of paper to resist tensile failure, while tear strength reflects the ability of paper to resist tearing forces. These indicators can be measured using professional instruments.

Flatness: The flatness of the paper has a direct impact on the printing effect. Paper with good flatness is less likely to wrinkle or deform during the printing process.

2、 Chemical performance indicators

Water resistance: Soak the paper in water and observe its deformation and fading to evaluate its waterproof performance.

Oil resistance: Testing the stability of paper in oily environments to ensure its suitability in specific application scenarios.

Acid and alkali resistance: Use pH test strips or pH meters to measure the acidity and alkalinity of paper to evaluate its stability in different environments.

3、 Printing performance indicators

Thermal reactivity: Test the reaction performance of paper at different temperatures to ensure that it can operate normally at the specified thermal head temperature.

Print clarity: Evaluate the clarity and contrast of printed images through printing tests. This reflects the color rendering performance of paper during thermal printing and the adaptability of print heads.

Image preservation: Evaluate the stability and durability of printed images over a long period of time. This includes investigations into color fading, image blurring, and other aspects.

4、 Environmental performance indicators

Degradability: Evaluate the degradation rate of paper in natural environments to meet modern environmental requirements.

Volatile Organic Compounds (VOCs) Content: Use gas chromatography to detect the VOCs content in paper to ensure compliance with environmental standards. These harmful substances may pose potential threats to human health and the environment.

5、 Raw materials and production processes

Raw material quality: High quality BOPP film usually has better physical and thermal properties, which affects the printing effect and durability of the final product.

Production process stability: the progressiveness and stability of the production process are the key factors that determine the product quality. Advanced production equipment and technology can more accurately control the thickness and uniformity of coatings, ensuring product stability and consistency.

In summary, evaluating the quality of BOPP thermal sensitive synthetic paper requires comprehensive consideration of physical properties, chemical properties, printing performance, environmental performance, as well as raw materials and production processes. Through strict testing and evaluation, the quality of BOPP thermal sensitive synthetic paper can be ensured to meet relevant standards and requirements, meeting the printing needs and application scenarios of users.