GW5042 Mono-component Water Base Adhesive
Product Characteristics
GW5042 is a mono-component water base acrylic lamination adhesive. It is an environmentally friendly adhesive that does not contain organic solvents and provides a good working environment.
It can be used by 180-200 line electro-entangled net roller coating. It achieves the same bonding strength as solvent-based adhesive at a lower coating weight (1.5~2.0 GSM), and the production condition is greatly improved. The cost of using adhesive is greatly reduced.
GW5042 has a wide adaptability to inks and is compatible with general-purpose chlorinated polypropylene, general-purpose polyurethane, and alcohol-soluble inks in lamination. In particular, in the lamination with white inks, it has better appearance than solvent-based adhesives.
GW5042 can be used for the lamination of BOPP/CPP, BOPP/PE,BOPP/VMCPP and BOPP/Pearlized BOPP. The package contents are applied to general lightweight snack food packaging. The total thickness of lamination is not more than 60um.
The GW5042 in lamination with metalized film has a much reduced aluminized transfer ratio compared to the solvent-based adhesive, and it also has a stable bonding strength.
GW5042 parameter
item | Specific |
GW5042 | |
Appearance | Milky liquid |
Solid Content | 42±1% |
PH Value | 6.5~7.5 |
Viscosity（NDJ-1） | <50.0mPa·S |
The use of recommendations
1. Open the bucket lid and stir slowly at a constant speed before use to ensure the consistency of the overall performance of the adhesive, but do not stir vigorously to prevent the generation of a large number of bubbles.
2. Before using adhesive, ensure that the parts in contact with the adhesive on the laminating machine are clean and free of residual adhesive. Especially when the solvent based adhesive was used, it should be thoroughly cleaned. The cleaning area shall be adhesive tank, coating roll, doctor roll, scraper and baffle and so on.
3 Detect the surface tension of the printed film with Dyne water of 38 dyne to ensure that the ink surface exceeds 38 dyne! At the same time, the laminating material must not be lower than 36 dyne.
4, oven temperature recommendations: four-stage oven temperature is set to: 60℃~65℃~75℃~85℃, three-stage oven temperature is set to: 65℃~80℃~90℃, the specific temperature according to the actual production process. After the temperature reaches the set temperature, then the lamination can be turned on. The air intake and exhaust of the oven should be maximized, and the contribution of air volume to the drying of the water-based adhesive will be more important than temperature. The nip temperature is set to 65°C - 75°C, and the nip hot roller pressure is maximized in the case that no damage to the material.
5. The air diaphragm pump must be used to circulate between the adhesive tank and adhesive drum. Clean the pump before use and do not mix with the solvent! The inlet must be equipped with a filter.
6, To prevent blockage, the scraper must be loosened during machine shutdown, and the coating roller is immersed in the adhesive to keep rotating, in order to prevent the adhesive from drying on the roller and difficult to clean.
7. Use a counter-rotating roller as far as possible. The speed of the roller should be 1.5 times the linear speed.
8、After use adhesive, wipe off the adhesive on the doctor roller with water and then thoroughly clean with ethyl acetate.
9、Adhesive storage temperature can not be lower than 5℃, can not be contaminated by dirt, solvents, etc.
10、Curing conditions: It is not necessary to cure in summer, and it can be cured in the environment of 40℃ ~ 45℃ for 6-10 hours after lamination in winter.
Storage matters
1. This product should be stored in a ventilated and dry warehouse, avoid freezing and exposure, storage and transportation conditions 5 ~ 35 °C.
2. The effective storage period of this product is six months from the date of packaging. If it exceeds the effective storage period, it can still be used after passing the test.
Note: Our recommended usage recommendations and some test data are based on our knowledge and test results. The materials, equipment and operating procedures actually used by customers will be different. Therefore, our recommendations cannot be used as a guarantee for the quality of our products.Please make pre-production tests before mass production to ensure the quality is reproduced.
