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The flowability of hot melt adhesive particles has an impact on the quality of glue and adhesive. Hot melt adhesive has poor fluidity and can also cause stretching problems or mismatch with mechanical efficiency.
1. Sol temperature;
Hot melt adhesive is very sensitive to temperature, and changes in temperature can alter the structure of the hot melt adhesive. After slowly heating to a certain temperature, the performance of the hot melt adhesive reaches its optimal state.
2、 Coordination between the performance and process of hot melt adhesive;
Hot melt adhesivehas broad application prospects.. In order to meet the requirements of the bonding process, the formula and properties of the hot melt adhesive particles used in different products must be adjusted to varying degrees. The fluidity of hot melt adhesive varies in different regions. The flowability is generally related to the permeability of hot melt adhesive particles
3、 The quantity of adhesive in hot melt adhesive;
The fluidity of hot melt adhesive is indeed affected by the adhesive. Colloidal viscosity is high and not easily melted.
4. There are many impurities in the glue furnace.
In order to cope with the frequent use of high-density glue, the glue furnace is a continuous sol. Over time, the residue in the furnace will increase, which not only reduces the melting efficiency, but also leads to excessive mixing of slag and newly melted rubber, affecting the flowability and performance of hot melt adhesive particles.
5、 The glue outlet is blocked.
When the glue flowing through the outlet channel is blocked, the channel is not unobstructed. A maintenance plan should be developed for hot melt adhesive equipment, and its components should be regularly maintained, repaired, and cleaned to eliminate obstacles in the use of hot melt adhesive.
The aging of hot melt adhesive is mainly manifested in two aspects: appearance and performance. Visually, the color of hot melt adhesive may become dull, and even yellow or brown tones may appear. The texture may become hard and brittle, losing its original flexibility, and the surface may have cracks or fissures. In terms of […]
What exactly is’ drawing ‘on the machine At the moment of glue coating or breaking, a thin wire is pulled out from the end of the sealing or gluing line, which is called “drawing” in the industry.Hot melt adhesive granulesAfter melting, it is a high viscosity hot fluid, and once the temperature, flow rate, and […]
Direct answer: Most of them are due to insufficient heat penetration, not poor glue The first few books and cardboard boxes couldn’t stick firmly when turned on, but then it became normal – this is almostHot melt adhesive granulesThe most common phenomenon in use. The root cause is usually that the temperature displayed on the […]
In book binding with copperplate paper as the inner page, due to the thin film covering the surface of copperplate paper, there is a high demand for the adhesive used. It is difficult for people to bind books and periodicals with white glue in order to make them more firmly attached to copperplate paper. After […]
