Water-soluble PVP (polyvinyl pyrrolidone)-based pressure sensitive adhesive and preparation method thereof

Abstract

The invention provides a water-soluble PVP (polyvinyl pyrrolidone)-based pressure sensitive adhesive and a preparation method thereof. The water-soluble PVP-based pressure sensitive adhesive is prepared from water as a solvent, polyvinylpyrrolidone as a main structure substance, polyvinyl alcohol and hydroxypropyl methyl cellulose as cohesion improvers, high-activity silver ions as an antibacterial agent and benzotriazole as a stabilizer together with polyhydric alcohols and polysaccharide humectants through mechanical stirring at a constant temperature. The water-soluble PVP-based pressure sensitive adhesive provided by the invention is prepared from substances which are easy to dissolve (soluble) in water as raw materials, is quite remarkable in water solubility, can be removed with slight force after clean water flashing after being smeared to articles, is free of residue substance and can do no harm to the articles. The adhesive has good viscosity, moisture retention performance and water solubility, the adhesive can be applied to metallic surface, and in addition, is barely corrosive to metals, and the preparation method of the adhesive is simple in process, easy to repeat andapplicable to on-scale production.

Description

technical field [0001] The invention relates to a water-soluble PVP-based pressure-sensitive adhesive and a preparation method thereof. The adhesive uses water-soluble (soluble) substances as raw materials, and its water solubility is quite considerable. It can be removed without any residual substances and will not cause damage to the object. The adhesive has good viscosity, moisture retention and water solubility, the colloid can be applied to the metal surface, and the corrosion degree to the metal is almost zero, and belongs to the adhesive technology field. Background technique [0002] The glue of the pressure-sensitive adhesive tape we use every day is not water-soluble, and the particles formed under the action of mechanical force will either adhere to the net, or adhere to the paper, or adhere to the cylinder after the paper is formed and dried. On or adhered to the roller, the destructive effect is huge. In addition, when the pressure-sensitive adhesive used in da...

AI Technical Summary

Problems solved by technology

[0002] The glue of the pressure-sensitive adhesive tape we use every day is not water-soluble, and the particles formed under the action of mechanical force will either adhere to the net, or adhere to the paper, or adhere to the cylinder after the paper is formed and dried. On, or adhered to the roller, the destructive effect is huge. In addition, when the pressure-sensitive adhesive used in daily life is used as the back coating of the label, there will be residues on the surface of the instrument or equipment, which will affect its appearance and normal use.