Adhesives can be categorised according to the type of material joining method. The basic criterion is whether a given compound chemically reacts with the materials and causes the entire weld to harden, thereby significantly increasing its mechanical strength. Another criterion is the type of raw material used.
In this case, we deal with glues of natural origin (e.g. plant and animal glues that are used, among others, in the paper and textile industries) or synthetic ones, which have the largest spectrum of applications. We can distinguish many types of synthetic adhesives, such as, for example, cyanoacrylates (colloquially known as “Superglue”), acrylic adhesives, polyurethane, amine, epoxy, silicone and many others.
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