The self-adhesive labels of hydrosol and hot melt adhesive have their own application scenarios, and which one is more suitable depends on the specific application needs and environmental conditions. Here is a detailed analysis of the applicability of both:
First, the applicability of hydrosol self-adhesive label paper
Environmental protection: Hydrosol self-adhesive label paper is environmentally friendly and non-toxic, using water as a dispersing medium, does not contain organic solvents, and meets the environmental protection requirements of modern society.
Stickiness and persistence: Although the initial stickiness may be low, the stickiness gradually increases over time and eventually the stickiness is higher. It is suitable for the occasions where the paste effect needs to be maintained for a long time.
Temperature resistance: Temperature resistance is relatively good, generally can withstand high temperatures below 90 degrees Celsius, some products can even withstand higher temperatures. It is suitable for the occasions that need to withstand a certain temperature change.
Application environment: Widely used in food, medicine, daily chemical products and other fields, especially suitable for industrial supplies labels with strict environmental protection requirements. At the same time, it performs best on labeled substrates with clean, dry surfaces and free of oil and dust.
Other features: Hydrosol self-adhesive label paper also has good fluidity and leveling, which helps to achieve uniform coating. In addition, its environmental protection and non-toxic characteristics also make it more advantageous in application scenarios with direct contact with food, drugs, etc.
Second, the applicability of hot melt adhesive label paper
Processing and operation: hot melt adhesive label paper melts and bonds quickly after heating, solidifies after cooling, and the operation is simple and fast. Suitable for automated production lines and other occasions requiring high efficiency.
Viscosity: High viscosity, even in the harsh environment such as high temperature and humidity can maintain a strong adhesion, to ensure that the label is effectively attached for a long time.
Temperature resistance limit: poor temperature resistance, generally need to be used in scenarios below 70 degrees. Beyond its tolerance temperature range, the viscosity may decrease or even fail.
Application environment: It is also suitable for food, medicine and other fields, but it is necessary to avoid long-term use in a high temperature environment. In addition, the hot melt adhesive can not be affixed to the PVC material, and the readhesion is poor.
Other features: hot-melt adhesive label paper has the characteristics of anti-counterfeiting and easy operation, and can make a variety of anti-counterfeiting labels, such as bar codes, two-dimensional codes, etc. At the same time, its fluidity is strong and suitable for low temperature labeling (-5 ~10 degrees below zero).
Third, comprehensive comparison and selection suggestions
Features Water-sol self-adhesive label paper Hot melt adhesive self-adhesive label paper
Environmental protection non-toxic environmental protection non-toxic
Viscosity The initial viscosity is low, and the final viscosity is high and the viscosity is high, but it is affected by temperature
Temperature resistance is relatively good, can withstand a certain high temperature is poor, generally need to be used below 70 degrees
Application environment Widely used in food, medicine, daily chemical and other fields are also suitable, but pay attention to avoid high temperature environment
Other characteristics good fluidity, suitable for uniform coating; Environmental protection, non-toxic, suitable for direct contact with food simple and fast operation, suitable for automated production lines; Anti-counterfeiting labels can be made
Selection suggestions:
When labels need to be attached for a long time and have high requirements on environmental protection, it is recommended to choose water-sol self-adhesive label paper.
When labels need to be quickly attached in a low-temperature environment and high operation efficiency is required, hot-melt adhesive labels may be more suitable. However, it is necessary to pay attention to the characteristics of its temperature resistance and non-readhesive.
In the specific selection, factors such as the material, surface condition and application environment of the paste should also be considered to ensure the pasting effect and durability of the label.