LA-675 is Polyester Adhesive which must mix with HA-675 Isocyanate Hardener. It can reach requirements of pasteurization and low-temperature boiling. It fits bags for all kind of sour, salt, spicy, marinated products. Excellent performance on adhesion, peeling strength, gloss, clear, aging resistance, sealing effects of vacuuming. When applying Its smell of evaporation is low and not affect work place. The adhesives are good at flatness, spreading, wet, stability. It does not show any stain in a full printing. Applicable to all high, middle, slow speed lamination machines.
【Film Materials & Lamination Structures】
LA-675 Polyester Adhesive must combine with HA-675 Isocyanate Hardener that can be used for laminated contractures made of the following materials: BOPP//PE、BOPP//CPP、PET//PE、PET//CPP、NYLON//PE、NYLON//CPP、VM-PET//PE、VM-PET//CPP、BOPP//VM-CPP、PET//VM-CPP.
【Application】
1. Dilution：Use Ethyl Acetate (water and Alcohol contents should be under 300ppm) as dilution.
2. Mixing Ratio (Weight ratio):
LA-675：HA-675: Ethyl Acetate=10：2：15-20.
3. Mixing：50% Ethyl Acetate mix with HA-675 in a mixing container. After stirring them evenly, put LA-675 into the container and keep stirring evenly. Add the rest 50% of Ethyl Acetate and keep stirring evenly.
4. Calculation of Diluted Solid Contents(by weight)：
(weight of LA-675*68%+weight of HA-675*75%)/(weight of LA-675+weight of HA-675+ weight of Ethyl Acetate).
Note：The diluted solid contents should be based on material types, packaging contents, anilox numbers on roller, lamination machine speed；normally is 20-35%
5. Usage：Usually between 2-3 g/m2 for dry lamination.
6. Dryness：To make solvent of adhesive evaporating from films completely, the temperature of tunnel must work with the lamination machine speed, gluing amount and materials. Normally they are three-steps-mode, 55℃-65℃-75℃, gradually heating up with good air inhalation and exhalation.
7. Lamination：Based on different material to adjust temperature, it is usually 50-80℃. If films are temperature sensitive, the temperature should be around 50-60℃. If films are not temperature sensitive, the temperature should be around 60-70℃. When laminating with aluminum sheet, the temperature should be around 70-80℃.
8. Aging：Normally adhesives in the beginning of lamination cannot reach required adhesion. It needs to be in aging room under 50-60℃ and 12-24 hours then goes to the third steps of lamination or slitting.
9. Adhesive and Hardener must be stored in cool and dry indoor room under 40℃. The expired time is one year in unopened situation.
10. Please keep good air circulation in working place to avoid harming health due to long-term breathing in solvent. If chemicals splash into eye or on skin accidently, immediately flush contacting area by huge amount of water then send to medical treatment.
