After long-term storage of three heat-proof paper, what need to be checked before use?

After long-term storage of heat-resistant paper, it is necessary to carry out various checks before use to ensure its printing effect and performance. Here are some key checkpoints:

1. Check storage conditions

Objective: To confirm whether the storage environment is suitable to avoid damage to paper quality.

Temperature and humidity: Check whether the temperature and humidity of the storage environment meet the storage requirements of the three heat-proof paper. In general, the appropriate storage temperature is 23±2 ° C, and the relative humidity is RH60-70% (or RH65±5%).

Light and moisture resistance: Verify that the paper is protected from direct sunlight and moisture, as these factors can cause the paper to fade or deteriorate.

2. Check appearance

Objective: To observe whether there is physical damage or chemical change on the surface of paper.

Package integrity: Check whether the moisture-proof paper or film package is intact, without damage or air leakage.

Paper surface: Observe whether the surface of the paper is flat, without wrinkles, without stains, and whether the coating is uniform without falling off.

3. Print effect pre-test

Objective: To test the printing effect of paper by small batch printing before actual use.

Print clarity: Print several samples to check if the print is clear, if the edges are neat, and if there is any blurring or broken lines.

Color uniformity: Observe whether the printed color is uniform, without different shades or color spots.

Three resistance performance: If conditions permit, you can carry out a simple waterproof, oil, anti-friction test to confirm whether the three resistance performance of the paper is still effective.

4. Glue or adhesive layer check (for label paper)

Purpose: To ensure that the glue or adhesive layer of the label paper remains effective after storage.

Viscosity test: Take several label samples, try to paste on the surface of different materials, check whether its viscosity is moderate, neither easy to fall off nor too sticky.

Glue penetration: Check whether glue permeates the back of the label, especially the labels stored in stacks for a long time.

5. Other precautions

Avoid contact with chemicals: In the process of storage and use, you should try to avoid contact with organic solvents and other chemicals, so as not to destroy the surface coating of the paper.

Regular inspection: For long-term storage of three heat-resistant paper, it is recommended to check regularly to find and deal with the problem paper in time.

In summary, the inspection of the three thermal sensitive paper after long-term storage before use should be comprehensive and detailed, including storage conditions, appearance, printing effect, glue or adhesive layer and many other aspects. Through the implementation of these inspection measures, it can be ensured that the quality of the paper and the printing effect meet the requirements of use.