As we all know, self-adhesive label involves a wide range of application industries, and is also the most convenient application of a functional label packaging material. Users from different industries have great differences in understanding of the properties of self-adhesive materials, especially for the storage and use conditions of self-adhesive products, which ultimately affect the normal use of labeling

The first thing to know about self-adhesive labels is to understand its structure.

Self-adhesive label material is a sandwich structure material composed of base paper, glue and surface material. Due to its own characteristics, it is necessary to pay attention to environmental factors in the use and storage of materials and labels, such as surface materials, glue, and backing paper.

Q: What is the recommended storage temperature of the adhesive material?

A: Usually 23℃±2℃，C, 50%±5% relative humidity

This condition is applicable to the storage of bare materials. Under the recommended environment, after a certain period of storage, the performance of the surface material, glue and base paper of the self-adhesive material can reach the supplier's promise.

Q: Is there a storage time limit?

A: The storage period of special materials may vary. Please refer to the material description document of the product. The storage period is calculated from the date of delivery of the self-adhesive material, and the concept of storage period is the period from delivery to use (labeling) of the self-adhesive material.

Q: In addition, what storage requirements should self-adhesive label materials meet?

A: Please record the following requirements:

1. Do not open the original package before the warehouse materials are out of the warehouse.

2. The first-in, first-out principle shall be followed, and the materials returned to the warehouse shall be repackaged or repackaged.

3. Do not directly touch the ground or wall.

4. Minimize stacking height.

5. Keep away from heat and fire sources

6. Avoid direct sunlight.

Q: What should we pay attention to for moisture-proof adhesive materials?

A: 1. Do not open the original packaging of raw materials before they are used on the machine.

2. For materials that are not used temporarily after unpacking, or materials that need to be returned to the warehouse before being used, repacking should be carried out as soon as possible to ensure moisture resistance.

3. Dehumidification measures should be carried out in the storage and processing workshop of self-adhesive label materials.

4. Processed semi-finished products and finished products should be packed in time and moisture-proof measures should be taken.

5. The packaging of finished labels should be sealed against moisture.

Q: What are your suggestions for labeling in the rainy season?

A: 1. Do not open the package of self-adhesive label materials before use to avoid moisture and deformation.

2. The pasted materials, such as cartons, should also be moisture-proof to avoid excessive moisture absorption and deformation of cartons, resulting in labeling wrinkles, bubbles, and peeling.

3. The newly made corrugated carton needs to be placed for a period of time to make its moisture content balance with the environment before labeling.

4. Ensure that the paper grain direction of the label (for details, see the S grain direction on the back print of the material) is consistent with the paper grain direction of the corrugated carton at the labeling position, and that the long side of the film label is consistent with the paper grain direction of the corrugated carton at the labeling position. This can reduce the risk of wrinkling and curling after labeling.

5. Ensure that the pressure of the label is in place and covers the whole label (especially the corner position).

6. The labeled cartons and other products should be stored in a closed room with low air humidity as far as possible, avoid convection with the outside humid air, and then transfer to outdoor circulation storage and transportation after glue leveling.

Q: What should we pay attention to in the storage of self-adhesive label materials in summer?

A: First of all, we need to consider the influence of the expansion coefficient of self-adhesive label materials:

The "sandwich" structure of self-adhesive label material makes it much larger than any single-layer structure of paper and film materials in the environment of high temperature and humidity.

The storage of self-adhesive label materials in summer should follow the following principles:

1. The temperature of the storage of self-adhesive label warehouse should not exceed 25℃ as far as possible, and it is best to be around 23℃. In particular, it is necessary to pay attention to the humidity in the warehouse can not be too high, and keep it below 60%RH.

2. The inventory time of self-adhesive label materials should be as short as possible, in strict accordance with the fifO principle.

Q: What details should we pay attention to in summer? 

A: Too high labeling environment temperature will make the glue fluidity stronger, easy to lead to labeling glue overflow, labeling machine guide paper wheel glue, and may appear labeling labeling is not smooth, labeling offset, wrinkling and other problems, labeling site temperature as far as possible to control around 23℃.

In addition, because the fluidity of glue is particularly good in summer, the leveling speed of self-adhesive label glue is much faster than that of other seasons. After labeling, the products need to be re-labeled. The shorter the unlabeling time from labeling time, the easier it is to uncover and replace them

Q: What should we pay attention to in the storage of self-adhesive label materials in winter?

A: 1. Do not store labels in A low temperature environment.

2. If the adhesive material is placed outdoors or in a cold environment, it is easy to cause the material, especially the glue part, to be frostbitten. If the adhesive material is not properly reheated and kept warm, the viscosity and processing performance will be lost or lost.

Q: Do you have any suggestions for the processing of self-adhesive label materials in winter?

A: 1. Low temperature should be avoided. After the glue viscosity is reduced, there will be poor printing, die cutting fly mark, and strip fly mark and drop mark in the processing, affecting the smooth processing of materials.

2. It is recommended to do appropriate warming treatment before processing of self-adhesive label materials in winter to ensure that the temperature of materials is restored to about 23℃, especially for hot melt adhesive materials.

Q: So what should we pay attention to in the labeling of winter adhesive materials? 

A: 1. The labeling environment temperature shall meet the product requirements. The minimum labeling temperature of self-adhesive label products refers to the lowest ambient temperature at which labeling operation can be carried out. (Please refer to the "Product Parameter Table" of each Avery Dennison product)

2. Before labeling, rewarm and hold the label material to ensure that the temperature of the label material and the surface of the material to be affixed is higher than the minimum labeling temperature allowed by the material.

3. The pasted material is treated with heat preservation, which is helpful to play the stickiness of self-adhesive label products.

4. Appropriately increase the pressure of labeling and caressing to ensure that the glue has sufficient contact and combination with the surface of the pasted object.

5. After the completion of labeling, avoid placing the products in the environment with large temperature difference for a short time (more than 24 hours is recommended).