In industrial use, hot melt adhesives provide several advantages over solvent-based adhesives. Volatile organic compounds are reduced or eliminated, and the drying or curing step is eliminated. Hot melt adhesives have long shelf life and usually can be disposed of without special precautions.
As the name suggests, a hot melt adhesive laminating is a type of glue that melts after heat and bonds various materials together by coating. Compared with other adhesives, hot melt adhesives have the following characteristics: 100% solid composition, no solvent and water components; With thermal plasticity, it can be repeatedly hot melted and condensed. This process is reversible and the chemistry of the hot melt adhesive does not change; Hot melt adhesives can only be applied when heat becomes molten; Hot melt adhesives create adhesion through cooling and condensation.
Hot melt adhesive laminating: It is a kind of coating machine that does not require solvents. 100% solid molten polymers are solid at room temperature, heated and melted to some extent into a liquid binder, can flow and have a certain viscosity. It is coated on the substrate and usually includes a composite part. Another substrate can be compounded with a coated substrate.
Process advantages: no need for drying equipment, low energy consumption: no solvent (100% hot melt adhesive solid composition), no pollution, operators will not be exposed to a large amount of formaldehyde due to cleaning the residual glue. Compared with the Arabic numerals under the traditional solvent-based and water-soluble adhesives, it has enviable advantages, effectively solves the inherent shortcomings of traditional processes, and is an ideal production equipment for the upgrading of the coating composite material industry.
Solvent and water based adhesive curing requires an oven (or may need to be refurbished), taking up more factory space and increasing plant energy consumption; Produce more sewage and sludge; Stricter production and operation requirements; The disadvantages of solvent glue are self-evident and very unenvironmental friendly (most solvents are harmful). Solvent-based adhesives are very polluting to the environment. With the improvement of environmental concepts and the establishment and improvement of relevant laws, the application of solvent-based adhesives is declining at a certain rate. The water resistance of water-based adhesives is poor. Poor electrical characteristics. Long drying time. Defects such as large energy consumption also decline at a certain rate every year. Hot melt adhesive has stable performance. High utilization rate of raw materials. Fast production speed. High yield. The equipment occupies a small area and has a small investment, and there is a tendency to gradually replace solvent-based adhesives.
Post time: Jan-20-2023
