High-waterproof nano modified water-based environment-friendly labeled binder easy in alkaline cleaning and preparation method thereof

Abstract

The invention discloses a high-waterproof nano modified water-based environment-friendly labeled binder easy in alkaline cleaning and a preparation method and application thereof. The high-waterproof nano modified water-based environment-friendly labeled binder is prepared by 1-25% of casein, 2-20% of soy protein, 5-50% of water-based tackifying resin, 0.5-20% of amylum, 0.1-20% of nano zinc oxide, 0.1-20% of nano zirconium dioxide, 0.1-5% of ammonia water, 0.1-0.5% of bacteriacide, 0.1-0.5% of defoamer, 0.1-10% of rheological agent and 10-60% of water. The high-waterproof nano modified water-based environment-friendly labeled binder easy in alkaline cleaning is impurity-free, stable in physical and chemical property and high in initial binding force and has excellent comprehensive effectto labels made of different paper, viscosity thereof ranges from 40000cps to 100000cps, and the pH (potential of hydrogen) value ranges from 7.0 to 8.0. Furthermore, the high-waterproof nano modifiedwater-based environment-friendly labeled binder easy in alkaline cleaning has excellent waterproof performance, alkaline cleaning performance and shearing resistance and can be applicable to higher-speed machines.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a water-based environmentally friendly labeling adhesive, in particular to a nano-modified water-based environmentally friendly labeling adhesive that is strong in water resistance and easy to be washed by alkali and can be applied to high-speed machines and its preparation method and application. [0002] Background technique [0003] In recent years, with the development of the beer industry and food condiment industry, as well as the introduction and localization of high-speed labeling machines, new requirements have been put forward for adhesives used in label pasting: 1. The beer industry requires good labels It has strong water resistance, that is, the label cannot fall off during the water cooling period of the beer freezer and when the consumer consumes the batch of beer. This index is defined as the normal temperature water resistance of the adhesive, which generally re...

AI Technical Summary

Problems solved by technology

[0004] Existing labeling adhesives are mainly traditional casein labeling adhesives and water-based synthetic labeling adhesives, both of which have deficiencies such as: 1. Traditional casein labeling adhesives Because casein is soluble in normal temperature water, its water resistance is poor, which cannot meet the normal temperature water resistance of beer labels; casein adhesives are sensitive to temperature, and when the temperature decreases or increases, the viscosity of casein adhesives will increase or decrease rapidly. Affect the stability of the product in use; casein adhesive has the disadvantage of high-speed shear thinning. When used in high-speed machines, the product has poor stability and is easy to splash out from the sizing roller and cause machine pollution and a lot of loss. consumption is also very high

2. Water-based synthetic labeling adhesive uses a large amount of polymer water-resistant resin as raw material, which solves the water-resistant problem of the label, reduces a certain unit consumption and product sensitivity to temperature, but because the polymer resin is difficult to dissolve in Water, the glue residue cannot be completely cleaned when the recovery bottle is eluted online, and it cannot meet the requirements of food grade

In addition, polymer resin is difficult to degrade, which greatly increases the cost of sewage treatment

Also, water-based synthetic labeling adhesives also suffer from shear thinning when used on high-speed machines