As a new type of environmentally friendly chemical product that can change its shape with temperature changes, it is colorless and odorless, and has been widely used in product bonding in various industries. There are many types of hot melt adhesives, including block, rod, and granular forms. So the production formula and material ratio are different, especially in summer and winter, the viscosity difference displayed under the influence of climate environment is very obvious. Of course, in addition to these climate factors and formula differences, the scenarios and items in which hot melt adhesive is used can also be a certain factor affecting the strength of viscosity. If the desired viscosity is not achieved during use, how can it be maximized?
- Applying pressure, the hot melt adhesive provides a certain external pressure when bonding with the object to be bonded. Pressing can allow the adhesive to fully adhere to the object before solidification, squeeze out the air in the bonding area, and better penetrate into the material’s potholes and gaps, thereby enhancing the bonding force
- Improving the surface roughness of an object can actually enhance the penetration strength of the adhesive, increase the contact density point between the colloid and the adhered object, and enhance viscosity.
- Adding viscosity enhancers, the main function of viscosity enhancers is to enhance viscosity, which can improve the flowability of colloids and the wettability of adhered items, thereby improving adhesive performance.
Of course, different styles of hot melt adhesives have their own unique functional properties, such as some having higher melting points. However, for some products with short cooling time, in order to achieve good adhesion, it is necessary to choose the appropriate one based on the usage scenario and item, and use the correct bonding steps when purchasing, in order to maximize the optimal viscosity of the hot melt adhesive.
Leave a Reply