GW5021/HD-A Two-component Water Base Adhesive
Product Characteristics
GW5021 + HD-A is a two-component water-based acrylic laminating adhesive that does not contain organic solvents and is an environmentally friendly adhesive that can provide a good working environment.
It can be used for coating with 180-200 lines anilox roller, and the same bond strength as solvent base adhesive can be obtained at a lower dry coating weight (1.8～2.0g㎡), but the production and use environment could also improve and greatly reduce the cost of glue usage.
GW5021 + HD-A has a wide range of ink adaptability, and can be laminated with general-purpose chlorinated polypropylene, general-purpose polyurethane, alcohol-based water-soluble inks and other types of inks. In particular, laminating with white-base inks have a better appearance than that of solvent-based adhesives.
GW5021 + HD-A are suitable for lamination of BOPP/PE, BOPP/CPP, PET/PE, ONY/PE, PET/AL/PE, BOPP/VMPET/PE, PET/VMPET/PE, which are used in general light-weight snack food packaging, and the total thickness of laminated film should not exceed 100um.
item | Specific | |
GW5021 | HD-A | |
Appearance | Milky liquid | Transparent Liquid |
Solid Content | 45±1% | 50% |
PH Value | 6.5~7.5 | 6.5~7.5 |
Viscosity（NDJ-1） | <50.0mPa·S | <1500.0mPa·S |
Mix ratio
BOPP/CPP, BOPP/LDPE; PET/CPP, PET/LDPE; ONY/CPP, ONY/LDPE, PET/VMPET/PE, BOPP/VMPET/PE, PET/AL/PE.
The total thickness is less than 60u, recommended mix ratio is 100:2;
The total thickness is less than 80u, recommended mix ratio is 100:3;
The total thickness is less than 120u, recommended mix ratio is 100:4
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.