What Is Gluing Machinery?
Gluing machines are devices used for applying adhesive to flat base materials such as plywood or wood boards like particle board and MDF, primarily employing rolls for the application. Historically, before the advent of these machines, adhesive was manually spread over substrates using tools like spatulas, which led to the development of the term “spreader.”
These machines can apply adhesive to either one or both sides of a substrate. The amount of adhesive and production volume can be controlled by adjusting the position and speed of each roll within the machine.
Uses of Gluing Machines
Gluing machines are essential in industries such as corrugated paper, construction materials, furniture, and woodworking, where they apply glue to flat substrates. Common applications include bonding cut boards to create laminated wood and coating plywood and MDF uniformly with adhesive for flooring materials production. Additionally, roll coating technology in gluing machines plays a vital role in the process.
Principle of Gluing Machines
Typically, gluing machines utilize a combination of three rolls to uniformly apply adhesive to the base material.
- Coater Roll: This roll applies adhesive to the substrate.
- Doctor Roll: It adjusts the amount of adhesive, with proximity to the coater roll determining the thickness of the adhesive layer.
- Feed Rolls: These rolls transport the substrate through the machine. The gap between these rolls and the coater roll is set based on the substrate’s thickness to ensure effective adhesive application.
Once the rolls are set up, the machine can consistently apply adhesive with constant quality over extended periods.