The adhesive strength of small-roll label paper is a key performance index, which directly affects the adhesion ability and durability of labels on different surfaces. Regarding the adhesive strength of small-roll label paper, it can be analyzed from the following aspects:
First, the measurement standard of viscous strength
Viscous strength is usually measured by a series of standard test methods, such as initial viscosity, holding viscosity and peel strength. These test methods can help evaluate the adhesive properties of label paper under different conditions.
1.Initial viscosity: The adhesive ability of the label when it first touches the pasted surface. A common test method is the rolling ball method, which evaluates the initial stickiness of the label by rolling a standard steel ball on an inclined plane.
2.Stickiness: The indicator label maintains the stability of adhesion ability during the long-term paste process. The test method is usually to attach the label to a specific surface and observe its shedding time under specified conditions.
3.Peel strength: refers to the force required to peel the label from the adhesive surface. The peel strength test can reflect the bond strength between the label and the pasted surface.
Second, Factors affecting viscosity strength
The adhesive strength of small-roll label paper is affected by many factors, including material, surface treatment, adhesive type, environmental conditions, and so on.
1.Material: The material of the label paper directly affects its adhesion performance. Different materials of label paper have different absorption and retention abilities of adhesives, which affects the adhesive strength.
2.Surface treatment: The nature of the pasted surface also has an important impact on the viscous strength. Rough, porous, or greasy surfaces may affect the adhesive's contact and bond with the surface, reducing the adhesive strength.
3.Adhesive type: Different types of adhesives have different adhesion properties. For example, some adhesives are suitable for low temperature environments, while others are suitable for high temperature environments. Choosing the right type of adhesive is crucial to ensure the adhesive properties of the label under different conditions.
4.Environmental conditions: Environmental conditions such as temperature and humidity also affect the adhesive strength of the label. For example, low temperatures may reduce the fluidity of the adhesive, thus affecting the adhesion effect; The high temperature may accelerate the aging of the adhesive and reduce the adhesive strength.
Third, the viscous strength of the small roll label paper
Due to the wide variety of small core label paper, and different manufacturers, different specifications of products in the adhesive strength may be different, so it is not possible to generalize its adhesive strength. In general, however, high-quality small-roll label paper should have high viscous strength, be able to achieve firm adhesion on a variety of surfaces, and maintain a lasting adhesion effect.
In practical applications, customers can choose small roll core label paper with appropriate adhesive strength according to specific needs. At the same time, in order to ensure the adhesion of the label paper to achieve the expected effect, it is recommended to conduct adequate testing and evaluation before use.
Fourth, Suggestions for improving viscosity strength
If the customer has high requirements for the adhesive strength of the label paper, the following measures can be taken to improve its adhesive performance:
1.Select the appropriate adhesive type according to the actual application environment and use conditions.
2.Appropriate treatment of the paste surface, such as cleaning, degreasing, increasing roughness, etc., to improve the contact and combination effect of the adhesive and the surface.
3.Pay attention to the control of environmental conditions during use to avoid the influence of adverse factors such as extreme temperature and humidity on viscous strength.
4.Check and replace labels regularly to avoid aging and falling off caused by long-term use.
In summary, the adhesive strength of small-roll label paper is a complex and important performance index, which is affected by many factors. In the selection and use process, customers need to fully consider the actual needs and application environment to ensure that the adhesion performance of the label paper achieves the expected effect.