1. Summary:
HY-9270 adhesive is a two-liquid reactive high-temperature steam adhesive used for lamination processing of food packaging materials PET/CPP, PET/PA/CPP plastic films and other substrates. It has 1. Resistant to cooking, boiling and excellent resistance to contents. The lamination material can be steamed at 121℃/30min. 2. The adhesive has good antifreeze properties. 3. High peel strength and good stability.
2. Physical properties:

3. Instructions for use:
1. Ratio of use: Recommended ratio: HY-9270 main agent: HY-9270 curing agent = 5:1 or according to the specific situation.
2. Working glue concentration and configuration. The recommended concentration is 25-35%. When using this glue, ethyl acetate is selected as the solvent.
3. Dilution: Add ethyl acetate solvent to the main agent and stir evenly, then add the curing agent and stir evenly, then it can be used. 
4. Viscosity: Each time the glue is prepared, the viscosity cup should be used to measure and record its viscosity to prevent errors during preparation. 
5. Coating amount: During dry-type lamination processing, the solid content is 25-35%, and the coating amount of the lamination coating for cooking-resistant packaging must be 4g-5g/㎡. Please adjust the depth of the wire roller according to the above data. Generally, when there is no resistance to contents, the coating amount can be reduced, and when resistance to contents or a certain bag breaking strength is required, the coating amount should be increased.
6. Bonding: The bonding temperature of the first film (film coated with adhesive) and the second film is generally controlled within the range of 50℃-80℃. Transparent film lamination is easily affected by heat and temperature, so it is advisable to laminate at 50℃-60℃, and others at 70℃-80℃.
7. Drying: In order to promote the volatilization of the solvent on the film coated with adhesive, the film must be passed through a drying device.
At this time, full attention should be paid to the air volume, wind speed and temperature that promote the complete volatilization of the solvent. If the drying device is divided into three stages, a temperature gradient of 50℃-60℃ 70℃-80℃ should be added between the film inlet and outlet.
8. Ripening: This product does not immediately have its due adhesive properties after the lamination processing. It needs to be sent to the aging room to promote the reaction. It needs to be aged for 36-48 hours at a temperature of 50℃-60℃ to achieve the desired bonding strength.
Precautions:
1. The remaining glue should be used up within 12 hours (20-25℃). In principle, it is not allowed to be used again. If the residual liquid is too much, it should be diluted and sealed in a dark place. It should be used as a thinner the next day and gradually added to the newly prepared glue. Avoid using it for lamination products with high quality requirements. If it is found to be turbid, translucent or the viscosity increases, it cannot be used.
2. The bonded substrate should be clean and dry, free of dust and oil. The surface tension of the lamination film should not be less than 40 dynes. It is more ideal if it can reach 42 dynes. Polyethylene and polypropylene films must be corona treated to make the surface tension above 40 dynes. The treated film has the best glue coating effect. Nylon should be protected from moisture. If polyurethane ink is used for printing, it is recommended to increase the amount of curing agent during lamination. Main agent: curing agent = 5:1-1.3. 
3. After opening the package, it must be used up in a short period of time, especially the curing agent is easy to absorb moisture and deteriorate, so more attention should be paid to drying. If it is not used up, it should be sealed immediately.
4. When producing lamination packaging materials, the residual amount of glue after drying should be controlled below 10mg/㎡.
5. This adhesive should be diluted with ethyl acetate without alcohol, amine and water content not higher than 300PPM. It is strictly forbidden to mix water, alcohol, amine and other impurities into the working fluid. 
6. The type of film additives, glue concentration, mesh roller depth and number of lines have an impact on the bonding strength of the lamination film. You should choose before use or consult the factory.
7. The mesh roller should be cleaned regularly with a professional mesh roller cleaning agent.
8. Do not mix this product with other adhesives. If necessary, please consult our factory's technical department.
9. The operating conditions, lamination process, usage methods and performance data in this technical data are all obtained by the test of our factory's technical department. In actual application, due to the differences in the source of materials, equipment process conditions and packaging structure of each user, it is recommended that each user conduct tests first or consult our factory's technical department.
10. The opinions and suggestions provided by our factory, whether verbally, in writing or during testing, are all sincere, but not guaranteed, which also involves the ownership of third parties. Users are responsible for testing the products supplied by our factory to verify whether they are suitable for their own equipment and process conditions and the final use of the lamination products.
Packaging and storage: HY-9270 main agent net weight 20Kg/barrel, storage period is 12 months;
HY-9270 curing agent net weight 4Kg/barrel, storage period is 12 months;