Starch adhesive for beer label paper

Abstract

The invention discloses a starch adhesive for beer label paper. The starch adhesive comprises the following components in parts by weight: 40 to 50 parts of cassava starch, 20 to 30 parts of corn starch, 10 to 20 parts of glutinous rice starch, 6 to 8 parts of sodium carbonate, 2 to 4 parts of boric acid, 2 to 3 parts of sodium sulfite, 2 to 3 parts of polyvinyl alcohol, 0.5 to 1 part of a defoaming agent, 2 to 3 parts of a mildew preventive, 0.8 to 1.2 parts of a curing agent and 30 to 40 parts of deionized water. The starch adhesive for the beer label paper, provided by the invention, is good in environment-friendly performance and good in adhesive property.

Description

technical field [0001] The invention relates to the technical field of starch adhesives, in particular to a starch adhesive used for beer label paper. Background technique [0002] Traditional adhesives are mainly based on resins and organic solvents. During production, use, and subsequent drying processes, volatile solvents harmful to the human body will be produced, as well as formaldehyde. Therefore, they are gradually replaced by water-based adhesives. Although organic solvent-based adhesives are more environmentally friendly than traditional organic solvent-based adhesives, their main components are still various resins and emulsions, which are not truly green and environmentally friendly, and are non-renewable. At the same time, their solvent is water. It is easy to open the glue in a high humidity environment, which will affect the product quality. Since starch is one of the main food crops in our country, it has abundant resources, wide sources, natural green enviro...

AI Technical Summary

Problems solved by technology

[0002] Traditional adhesives are mainly based on resins and organic solvents. During production, use, and subsequent drying processes, volatile solvents harmful to the human body will be produced, as well as formaldehyde. Therefore, they are gradually replaced by water-based adhesives. Although organic solvent-based adhesives are more environmentally friendly than traditional organic solvent-based adhesives, their main components are still various resins and emulsions, which are not truly green and environmentally friendly, and are non-renewable. At the same time, their solvent is water. It is easy to open the glue in a high humidity environment, which will affect the product quality

Since starch is one of the main food crops in our country, it has abundant resources, wide sources, natural green environmental protection and renewable, most of the existing adhesives use starch as the main linking material, the starch is heated and swelled to obtain gelatinized starch, and this kind The gelatinized starch obtained by the method contains a large amount of hydrogen bonds, so that the system has poor fluidity, high viscosity, easy caking, short storage time, and poor adhesive force, which is not suitable for large-scale industrial applications. Problems such as poor plasticization

[0003] Existing starch adhesives applied to beer label paper also have the above-mentioned problems, which affect the quality of beer packaging