When labelling, it is very important that the surface of the labelled object is flat. However, in our daily life, we will also encounter some objects with rough surfaces that need to be labelled, such as frosted glass, matte plastic bottles and so on. The surface of such objects is not composed of smooth surface, but by the uniform, uneven uneven unevenness of the concave and convex surface composition. Due to this type of surface on the label adhesive contact surface is small, poor bond strength, very easy to label warping, peeling phenomenon, so you must choose a special type or structure of the label material, in order to fit the rough surface of the adhesive requirements.
So, exactly how to choose to paste on the rough surface of the self-adhesive label materials?
1. Select the adhesive coating amount of materials. Coating volume is generally about 30g/m2. Rely on a large amount of adhesive coating, increase the label with the rough surface of the bond strength.
2. The use of good fluidity, soft adhesive coated label materials. This type of material adhesive can penetrate into the rough surface of the concave part, thus increasing the bonding area, increase the label and the object surface bonding force.
3. Selection of high-strength adhesive coated label materials, such as hot melt adhesives, solvent-based adhesives. The initial viscosity of such materials and zui final viscosity are very strong, suitable for rough surface objects paste.