What is pu glue and what is it used for?

In industry, we frequently use many tools, but many industrial materials are not very familiar to people. Therefore, many people are very curious about what the essence of some things is. Today, what I want to talk about is an industrial material, pu glue. I believe that before the editor mentioned it, there must have been many people thinking about this issue with questions in mind. But it doesn’t matter. The editor wrote this article just to popularize some knowledge for you. Follow the editor’s steps and solve the problems step by step.
What is pu glue?
pu adhesive is polyurethane adhesive, a two-component adhesive pre-polymerized from resin and emulsion. It is mainly used for bonding wood, aluminum plates, color steel plates, and the bonding of metals with polystyrene foam materials. It has good bonding strength, contains no organic solvents, and has excellent heat resistance. This product can be cured at room temperature or by heating. Ultimately, it’s the plastic we often talk about in our daily lives.
In addition, there is another type of pu adhesive called water-based pu adhesive. Water-based PU adhesive is a water-based polyurethane dispersion based on anionic type. It is a heat-activated adhesive and can be used in fields such as shoe-making, furniture, automobiles, and the construction industry.
Water-based PU glue has a wide range of applications. Firstly, it is mainly used in the shoe-making industry:
(1) When combined with appropriate surface treatment agents, water-based PU glue can basically be applied to most shoe materials.
(2) Water-based products have very obvious advantages for porous fabrics or materials that are easily eroded by solvents.
(3) However, for materials with a high oil content and particularly high tension, water-based PU adhesives are not yet very suitable for use at present.
(4) Bonding between various shoe materials such as PU, PVC, EVA, TPR, rubber, mesh fabric, genuine leather, etc
Another type of pu adhesive is PU injection molding adhesive. PU injection molding adhesive is an elastomer. By casting, it eliminates the need for the iron end cover and rubber sealing ring of the air filter element. Moreover, it is the most ideal product for manufacturing plate-type air filters.