Dual sided properties of hot melt adhesive particles: flexible application, highlighting strengths and avoiding weaknesses

Firstly, let’s report the good news. The hot melt adhesive series products have many advantages in the following aspects:

1、 Fast curing speed, good adhesive strength and flexibility. Hot melt adhesive particles can solidify and bond within seconds, and have the characteristics of melting when heated and sticking when cooled. This allows packaging companies to use higher production line speeds when using hot melt adhesive, increasing output while reducing defective products. It is suitable for continuous, automated, high-speed operations and has low costs.

2、 The ability of hot melt adhesive particles is very stable and not affected by changes in temperature and humidity in the working environment in the morning and evening. The adhesive layer has excellent water resistance and moisture resistance. Even in humid environments, reliable adhesives can be formed to ensure adhesive speed and eliminate the inherent adhesive peeling problem of packaging machinery.

3、 The safety of hot melt adhesive granules is unique in the adhesive industry. Hot melt adhesive does not contain solvents and will not emit toxic smoke after registration. Not easy to burn or explode, will not cause secondary pollution to the environment, and will not harm human health. Easy to transport and store. Long service life, eliminating damage and debris, and easy to use.

4、 Hot melt adhesive particles can melt and bond multiple times. If the hot melt adhesive applied on the base cannot bond due to cooling and solidification, it can be reheated for bonding. It can be bonded to various objects, both adhesive and sealing, without the need for a drying process. The grafting process is simple and has good economic benefits.

So let’s take a look at some of the shortcomings of the hot melt adhesive series products. Meanwhile, we will explain some ideas to address these shortcomings:

1、 Due to the high concentration of the product, the performance of hot melt adhesive is limited, the bonding strength is limited, the drug resistance is poor, and it is sensitive to temperature. The solution is to pay attention to the temperature resistance storage and environmental usage conditions of different brands of hot melt adhesive, improve the production process of hot melt adhesive, modify the matrix polymer of hot melt adhesive, and improve the heat resistance and heat resistance of hot melt adhesive.

2、 The conditions for using hot melt adhesive particles are limited. Due to the fact that hot melt adhesive can change its physical form at an appropriate temperature to achieve the desired effect, manual coating is ineffective, adhesive loss is difficult to control, and production efficiency is very low. Therefore, specialized melting measuring equipment such as hot melt glue machines and hot melt glue guns are needed, which are inconvenient to use and limit their use and promotion. The solution is to use professional hot melt adhesive equipment to improve efficiency and error.

3、 The mining industry needs to undergo changes due to environmental changes. Hot melt adhesive is affected by weather and season during bonding. Generally, the wettability is weak in winter, and the processing is slow in summer. The melting time is short when the wind is strong; Curing is faster in winter, and the solidification time of finished products is faster. The workshop needs to maintain a constant temperature (16-30 ℃) to avoid cracking.