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There are many types of adhesives, including hot melt adhesive, water-based adhesive, oil-based adhesive, etc. Different adhesive curing methods, speeds, times, and forms vary. What is the difference between hot melt adhesive and water-based adhesive for cardboard packaging?
1. Hot melt adhesive for cardboard packaging
Firstly, let’s talk about hot melt adhesive. Hot melt adhesive does not require solvents or water during operation. At normal temperature, hot melt adhesive is in a solid state; After hot melt adhesive is heated, it melts into a liquid state, and the liquid has the effect of adhesive force.
The advantages are: packaging and shipping costs are relatively low, and materials do not require freezing or drying equipment. It is easy to bond and has a relatively strong adhesive strength. High stability and good water resistance during storage.
The disadvantage is that it requires special application devices; Although the adhesive strength is high, it is easily affected by temperature and cannot be continuously heated.
2. Environmentally friendly water-based adhesive
Water based coating adhesives are emulsified using water as a solvent and require special emulsification equipment.
Advantages:It uses water as a solvent and is cheaper than hot melt adhesive.. Because it uses water as a solvent, it is very environmentally friendly. Under normal circumstances, it has no clusters and no odor. And the glue itself does not burn, with a wide range of solid content and viscosity, which can achieve good water resistance and adhesion.
Disadvantages:The disadvantages of water-based adhesive are that it takes longer to cure than hot melt adhesive, has lower adhesion, and is prone to freezing at low temperatures.. If metal vessels are connected, they are easily contaminated and can produce corrosive substances that corrode some of the metal.
The adhesive market is vast and the industry has unlimited development potential. As a result, numerous high-quality and cost-effective adhesive brands have emerged!
In fact, the difference between cardboard packaging hot melt adhesive and environmentally friendly water-based adhesive is not only these, but also their characteristics in construction. The construction characteristics of adhesives with different properties are also different. For example, hot melt adhesive can be applied, while water-based adhesive needs to be scraped and sprayed. Therefore, when choosing glue, it is also necessary to understand its construction process in order to prescribe the right medicine and ensure good adhesion.
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The packaging hot melt adhesive is heated to become liquid. Apply the liquid to the initial surface by extruding, spraying, or rolling the specified amount, and then expose it to a brief “open time” to achieve optimal temperature and “humidity” for bonding to the initial surface. After the designated opening time, the two surfaces come […]
