High capacity hot melt adhesive special resin

The flowability of high capacity hot melt adhesive special resin is one of the key factors to ensure the construction quality and bonding effect of hot melt adhesive. Here are some methods to ensure the fluidity of hot melt adhesive special resin:

1. Resin selection

Type matching: Choose resin types that are compatible with high-capacity hot melt adhesives, such as EVA resin, C5 petroleum resin, etc. These resins usually have good fluidity.

Quality control: Ensure the stable quality of high capacity hot melt adhesive special resin, avoid using resin containing impurities or unqualified, so as not to affect the fluidity of hot melt adhesive.

2. Formula adjustment

Addition of wax: Wax is the component with the lowest viscosity in hot melt adhesive. Increasing the amount of wax can significantly reduce the viscosity of hot melt adhesive and increase its fluidity. At the same time, the type and melting point of wax can also affect fluidity, and suitable wax should be selected for formula adjustment.

The ratio of tackifying resin: Although tackifying resin can improve the adhesion of hot melt adhesive, excessive tackifying resin may increase the viscosity of hot melt adhesive and reduce its fluidity. Therefore, it is necessary to control the proportion of thickening resin reasonably.

3. Process control

Sol temperature: Increasing the sol temperature can reduce the viscosity of hot melt adhesive and increase its fluidity. However, excessive temperature may lead to the decomposition or deterioration of high capacity hot melt adhesive special resin, so it needs to be controlled within an appropriate range.

Mixing uniformity: Ensure that the components such as resin, wax, and thickening agent are mixed evenly in the molten state, avoiding situations where local viscosity is too high or too low, which may affect the overall fluidity.

4. Other factors

Control of filling material: The amount of filling material can also affect the fluidity of hot melt adhesive. Excessive filler may reduce the fluidity of hot melt adhesive, so it is necessary to control the amount of filler added reasonably according to actual needs.
Storage conditions: Avoid storing hot melt adhesive for a long time in high temperature and high humidity environments to prevent the special resin for hot melt adhesive special resin from deteriorating or absorbing moisture, resulting in a decrease in fluidity.
In summary, ensuring the fluidity of high capacity hot melt adhesive special resin requires comprehensive consideration and control from multiple aspects such as resin selection, formula adjustment, process control, and other factors. Through reasonable formula design and process control, it is possible to ensure that high-capacity hot melt adhesive has good fluidity during the construction process, thereby meeting bonding requirements and improving construction efficiency.