How to determine whether PET silver paper meets quality standards?

To determine whether PET silver paper meets quality standards, the following aspects can be examined:

1、 Appearance inspection

Clear identification: Check the inside of the paper core, the packaging bag of each roll of paper, and the outside of the cardboard box to ensure that the product identification is clear and accurate, including brand, specifications, production date, and other information.

Surface cleanliness: The surface of the paper should be clean, without excessive dust, stains, or impurities.

Consistency between spacing and margins: The spacing and margins of the paper should be consistent to ensure printing quality and label neatness.

The side of the paper roll is clean: there should be no edge strips or residues on the side of the paper roll to ensure the integrity of the label.

2、 Physical performance

Moderate thickness: The thickness of PET silver paper is usually divided into various specifications such as 25U, 50U, 75U, 100U, 150U, etc. Thicker paper is less prone to foaming, but the specific choice needs to be determined according to actual needs.

Tear strength: Tear off a label by hand and check if its tear strength is moderate, neither easy to tear nor easy to fall off.

Scratch resistant and wear-resistant: PET silver paper should have good scratch resistant and wear-resistant properties to ensure that the label is not easily damaged during long-term use.

3、 Printing effect

Uniform hair color: The printed label color should be uniform, without obvious color difference or uneven color blocks.

Clarity: The printed content such as text and patterns should be clear and distinguishable, without blurring or ghosting.

Durability: Printed labels should have a certain degree of durability and not easily fade or discolor.

4、 Special performance testing

Thermal stability: Evaluate the thermal stability of PET silver paper through thermal analysis tests (such as DSC, TGA) to ensure that it is not easily deformed or damaged due to temperature changes during use.

Chemical durability: Evaluate the acid, alkali, and solvent resistance of PET silver paper through immersion tests to ensure that it is not easily damaged by chemical corrosion during use.

5、 Brand and manufacturer reputation

Brand awareness: Choosing PET silver paper produced by well-known brands or manufacturers with good reputation usually ensures better quality.

After sales service: Understand the manufacturer's after-sales service policy to ensure timely and effective solutions to any problems encountered during use.

In summary, determining whether PET silver paper meets quality standards requires comprehensive consideration from multiple aspects. Through visual inspection, physical performance, printing effect, special performance testing, and evaluation of brand and manufacturer reputation, it is possible to accurately determine whether the quality of PET silver paper meets the requirements.