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Place of Origin: | China |
Brand Name: | Weeton |
Certification: | FDA 175.105 |
Model Number: | 776A 776B |
Weeton 776A /776B is a two-component polyurethane adhesive for flexible lamination valid for various plastic film, aluminum film and aluminum foil and alike substrate. WeetonTM776A /776B provides good adhesion featuring a very high initial tack, excellent solvent release, perfect compatibility, good wetting, good heat resistance and good chemical resistance.
776A/776B is recommended for applications requiring a faster curing speed, 776A/776B adhesive product has high compatibility with the slip agent, can be used for wPE(>=80um)like OPP/PE, NY/ (w)PE, and so on. For aluminum foil structure,776A /776B shows an excellent positioning force and peel strength build-up.
Under proper conditions, 776A /776B used for film/film structures, can withstand boiling treatment.
Properties
Product Name | 776A 776B | |
Component | Isocyanate Hydroxyl | |
Mixing Ratio | 1:1 (mass ratio) | |
Solids Content | 75±2% 75±2% | |
Viscosity |
1150 ± 500mPa.s (Brookfield RVT,25°C) |
1000±500mPa.s (Brookfield LVT, 25°C) |
Color | Yellowish Colorless to yellowish | |
Flash Point | -4°C -4°C | |
Solvent | Ethyl acetate Ethyl acetate | |
Density | 1.09 g / cm3 1.08 g / cm3 |
Directions for use
List of Dilution: When the ethyl acetate is used for dilution to obtain an accurate solid content, the amount required should refer to the following table
776A | 776B | Solvent | Solid Content | Viscosity |
20KG | 20KG | 26.7 KG | 45% | 16-18s |
20KG | 20 KG | 35.0 KG | 40% | 13-15s |
20KG | 20 KG | 45.7 KG | 35% | 12-13s |
20KG | 20 KG | 60.0 KG | 30% | 11-12s |
* Viscosity is based on the average viscosity of the Ford cup 3# (25°C).
Tropical area (Temperature >28°C + humidity >60%) pot life: Ready-for-use adhesive should be used up within 2 hours.
Film properties: The completely cured 776A/776B polyurethane film is transparent, odorless, elastic and aging-resistant.
Product certification
776A/776B is suitable for laminating food packaging materials in accordance with US FDA 175.105 and Chinese GB- 9685. After sizing, the fully cured adhesive material complies with the EU 2002/72/EC and its Supplementary Agreement 2004/19/EC on the restriction of migration of certain substances.
Storage/Transport
Storage: 776 has a storage life of 12 months when stored at a cool and dry place in unopened containers. Once opened, containers of 776A/776B should be closed tightly again and the material should be consumed within a short period.
Transport: For details please refer to the corresponding safety data sheets.
Packaging specifications
776A:20KG/bucket 776B:20KG/bucket
Notes
When using 776 an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanate concentration in the air. Safety regulations with regard to the handling of isocyanates have to be followed as per the guidelines issued by the International Isocyanates Institute. Please also refer to the local safety instructions as well as our safety data sheet and contact Huitian for analytical support.
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