In the printing and packaging industry, self-adhesive technology and materials are more and more widely used. Self-adhesive is usually used to make labels, panels, bar codes, packaging protective layers, etc. These products have good adhesion, durability and water resistance. So, what glue is used for self-adhesive materials? How is it glued? It is meaningful to discuss and explain these problems.

First of all, to talk about self-adhesive material is what glue. Usually, self-adhesive materials used in the glue is a special pressure-sensitive adhesive, this adhesive can be under the action of pressure to produce viscosity, shape and fasten on the surface of the object. There are many kinds of adhesives, such as chitosan adhesive, acrylic adhesive, silane adhesive, polyurethane adhesive, etc. These adhesives play an important role, they have excellent viscosity, water holding, sealing, wear resistance and non-decolorization.

Next, we will explain how self-adhesive material is glued. The sizing process of self-adhesive materials usually consists of several continuous processes: Glue, smooth, dry and cool.

In the gluing step, the glue is evenly coated on the surface of the base material through the gluing machine, and the speed and pressure of the gluing machine can be adjusted according to different adhesive types and conditions of the base material. Some special glues may also require heating or chemical treatment to ensure uniform coating of the glue.

The next step is smoothing. This is done by the coater. The coated material enters a smoothing stage where the coated glue is pushed to each corner of the substrate by a smoothing roller while removing any air bubbles that may be present.

Then it goes to the drying section. The glue-coated base paper passes through the heater so that the glue is dried quickly on the surface of the paper to form an adhesive layer.

Finally, there is the cooling step. The material is rapidly cooled in the cooling zone, allowing the glue to further solidify and enhance the viscosity. In this way, the self-adhesive material is made and can then be cut and packaged.

Therefore, theadhesive stickerThere are many kinds of adhesives for materials, which adhesive depends on the use and requirements of self-adhesive. The gluing process is also a technical complex process, involving the gluing, smoothing, drying and cooling steps. The development of technology makes the application of self-adhesive materials more and more extensive, but also makes our life more convenient.

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