How to check the quality of copperplate paper adhesive labels?

The quality of copperplate paper adhesive labels can be tested from the following aspects:

1、 Appearance inspection

Surface flatness: Observe whether the label surface is flat, without bubbles, wrinkles, or defects. The surface of high-quality copperplate paper adhesive labels should be smooth and flawless.

Cutting uniformity: Check if the edges of the label are cut neatly, without burrs or irregular edges. Uniformly cut labels look more aesthetically pleasing and are easier to stick.

2、 Viscosity test

Initial adhesion test: Gently press the label with your fingers, then try to quickly peel it off and observe if there is any detachment or movement of the label. A label with good initial adhesion can be quickly attached to the surface of an object and is not easily detached.

Adhesive test: Stick the label onto a standard test board and leave it for a period of time (such as 24 hours), then observe whether the label has fallen off or curled edges. A label with good adhesion can maintain its adhesive state for a long time and is not easily detached.

3、 Weather resistance test

Water resistance test: Soak the label in water for a period of time, and then observe whether the label is deformed, faded, or peeled off. The water resistance of copperplate paper adhesive labels is poor, but testing can reveal their performance in water environments.

Wear resistance test: Use a friction tester to conduct a friction test on the label, observing whether the printed pattern on the label is worn or blurred. Labels with good wear resistance can withstand daily wear and tear, maintaining clarity and readability.

High/low temperature resistance test: Place the label in a high or low temperature environment for a period of time, and then observe whether the label is deformed, faded, or peeled off. This helps to understand the performance of labels in different temperature environments.

4、 Printing effect check

Clarity: Observe whether the printed patterns and text on the label are clear and sharp. High quality copperplate paper adhesive labels should have good printing effects, clear and readable patterns and text.

Color Brightness: Check if the colors on the label are bright and full. Copperplate paper has good ink absorption, and the printed colors are usually bright.

5、 Environmental protection inspection

Material composition: Understand whether the materials used in the label are environmentally friendly and contain harmful substances. Copperplate paper is a paper-based material that is more environmentally friendly compared to other plastic based materials, but specific details need to be checked in the manufacturer's material specifications.

Recyclability: Inquire with the manufacturer if the label is recyclable to reduce the impact on the environment.

In summary, the quality of copperplate paper adhesive labels needs to be comprehensively considered from multiple aspects such as appearance, adhesion, weather resistance, printing effect, and environmental friendliness. Through comprehensive testing, the quality of the labels can be ensured to meet the usage requirements.