With the development of society, the quality of glue has been pushed to a high point, which also led to the development of water-based glue. At present, the environmental protection industry is in a stage of rapid development. People pay more and more attention to health and environmental protection issues. The chemical glue industry is also in a stage of rapid change, and water based adhesive gradually begins to become the mainstream of the market. Let's briefly talk about the characteristics of water-based glue:

Environment protecting

The water-based adhesive is made of high polymer, water-soluble resin and other main raw materials, with water as the solvent. It is non-flammable and easy to clean up. It conforms to FDA, SGS, ROHS and other certifications.

Waterborne adhesive can be safely used for packaging of food, medicine, alcohol, tobacco, children's toys and so on. The machine can be cleaned with water after using glue, not only to improve the production environment, but also to ensure the health of production personnel.

Safe and reliable

In practical application, some packaging and printing enterprises lack sufficient understanding of water-based adhesives, which causes some quality problems. The preparation method and production process of different types of water-based adhesives (semi-oil semi-water and pure water) are different, that is, the application index is different. The most important application indexes of water-based adhesives in packaging and printing industry include bond strength, high/low temperature resistance, moisture resistance and adhesion.

Some packaging and printing enterprises reflect:

Some water-based adhesives will be degumming soon after gluing;

The viscosity is unstable, sometimes the bond is firm, sometimes it is not on;

It works well in hot weather, but it doesn't work in cold weather.

In fact, these defects occur because of the above four application indicators are not up to standard. And water-based glue, broken paper fiber in more than 90%, strong adhesion, good temperature resistance [at high temperature (60℃), low temperature (-20℃), high temperature and high humidity (60℃, 85%RH) and constant temperature conditions 48h do not unglue foaming].

Versatility and innovation 

Water based adhesive products are not only easy to operate, but also widely used. At present, water-based adhesive is mainly used for bonding between UV paper/paper, polished paper/paper, PET/ paper, BOPP/ paper, PVC/ paper, coated paper/gray board, special paper/plastic box, coated paper/gray board and other substrates.

Each water-based adhesive has its "inherent characteristics", which mainly include appearance (product appearance and film appearance), solid content, PH value, solvent ratio, opening time, high/low temperature resistance, viscosity, etc. The bonding methods of water-based adhesives are generally divided into three kinds: machine adhesive, hand adhesive, machine adhesive and hand adhesive. Different bonding modes correspond to different intrinsic characteristics. For example, when the machine adhesive is used, the water-based adhesive is required to have strong mechanical adaptability (spraying, dish coating, roll coating, etc.), fast initial adhesion, and can adapt to high machine speed production; When the hand adhesive is used, the water-based adhesive is required to open for a long time, a wide way of gluing (glue pot scratching glue, silkscreen scraping glue, brush brush glue, etc.), and strong operability.