Water-based adhesives apply those things

BAIDU_CLB_fillSlot("858283"); Printing enterprises must make corresponding improvements in printing, drying, compounding, cleaning, etc., and gradually realize environmental protection. Green raw and auxiliary materials, alternative methods of green printing process, and organic solvent recovery technology are several methods to reduce VOCs currently advocated by the printing industry. Among them, the water-based adhesive is an environmentally friendly adhesive prepared by using natural polymer or synthetic polymer as a binder and water as a solvent or dispersant to replace toxic organic solvents that pollute the environment. It has the advantages of non-toxic, non-polluting, non-flammable, safe to use, and easy to achieve clean production. Next, the author will talk about those things related to water-based adhesives!

How to choose a water based adhesive

1. Fully understand the characteristics of water-based adhesives

Before choosing a water-based adhesive, you must fully understand its characteristics.

First of all, no one adhesive is a panacea. Adhesives can only be used to bond certain materials or types of materials. At present, water-based adhesives are mainly used for bonding between substrates such as polishing paper/paper, PET/paper, BOPP/paper, PVC/paper, etc.

Secondly, the preparation methods and production processes of different types of water-based adhesives are different, so their chemical and physical properties are also different. Printing enterprises should choose according to their actual situation. The author believes that the important application indicators of water-based adhesives mainly include four aspects: bonding strength, high and low temperature resistance, moisture resistance and retention. In practice, the adhesion, degumming and brittleness of the film are often caused by the above four indicators.

Again, it is necessary to understand the shortcomings of water-based adhesives, including slow drying speed, poor water resistance, and poor frost resistance, before they can be used reasonably.

2. Choose cost-effective products

When choosing water-based adhesives, the principle of "quality first, price second" should be followed. The price is expensive and not necessarily suitable. The author believes that when choosing water-based adhesives, it is necessary to comprehensively consider the characteristics of the processed products and the conditions of the enterprise, and choose products with high cost performance.

How to do water-based glue

1. Storage matters

Water-based adhesives must be stored in a ventilated room at 5 to 40 °C, protected from light, away from direct sunlight, moisture, frost, dirt and solvents. It is recommended that the warehouse be managed by professionally trained personnel and equipped with a temperature and humidity meter to record the daily temperature and humidity of the warehouse. If the temperature exceeds the recommended range, improvement measures should be taken in time to ensure the quality of the water-based adhesive. When using, the principle of first-in, first-out should be followed to ensure the freshness of the water-based adhesive.