|Place of Origin:||China|
|Minimum Order Quantity:||700KG|
|Packaging Details:||A: 20KG/bucket B:4KG/bucket|
|Delivery Time:||15 days after deposit|
|Payment Terms:||T/T, L/C|
|Application:||Flexible Packaging||Mixing Rate:||5:1 (mass Ratio)|
|Solvent:||Ethyl Acetate(EA)||Color:||Colorless To Yellowish|
|Material:||Polyurethane||Shelf Life:||9 Months|
polyurethane construction adhesive,
polyurethane sealant adhesive
Introduction of 728
728A in combination with Hardener 728B is a two-component polyurethane adhesive for various film/film and film/metalized filml laminates. This product has good flexibility and good transparency, can effectively reduce the characteristics of aluminum transfer and prevent the phenomenon of tunnel.
1. Preparation of Adhesive Mixture: After having added the right quantity of solvent to 728A and having achieved the required solids 728B has to be stirred into the 8728A/solvent mixture.
2. List of dilution: When the ethyl acetate is used for dilution, to obtain an accurate solid content, it is required to refer to the following solvents.
|728 A||728B||Solvent||Solids Content||Viscosity|
* Viscosity is based on the average viscosity of the Ford cup 4mm/20°C
3. Pot life: The ready-for-use adhesive in closed containers has a working time of about 8 hours. The composite machine is not used up of adhesive, the retention time of more than 2 hours, if more than 2 hours should be abandoned, otherwise it may lead to unstable composite films.
Tropical area (Temperature >28°C + humidity >60%) pot life: Mixed adhesive should be used up within 2 hours.
4. Coating: 728 adhesive is suitable for dry composite device with smooth light roller or concave roller. Before mass production, repeated trials should be carried out to determine the fit of the wire roller.
5. Pressure adjustment: Appropriate increase in composite temperature and compound roll pressure can improve the bonding effect and surface finish of the composite.
6. Curing: Storage at higher temperatures (40°C-50°C) room, various film/film and film/foil laminates can cutting in 24 hours. Such as curing bag processing should be appropriate to extend the curing time.
7. Film properties: The completely cured 8711 polyurethane film is transparent, odorless, elastic and resistant.
8. Matters needing attention: As the adhesive contains polyisocyanates any contact with skin has to be removed.
9. Others: Film additives-particularly slip agent content in LDPE,MDPE and CPP films-packed goods, printing inks, pre-treatment and coating of films are of significant importance to the end use of the laminates and may affect the performance properties either straight away or later. Therefore, practical laminating tests as well as checks on the laminates are necessary before going into full scale production.
* Further detailed information can be obtained from our “Technical Guide Line for laminating with HT adhesives”
The information provided herein, especially recommendations for the usage and the application of our products, is based upon our knowledge and experience. Due to different materials used as well as to varying working conditions beyond our control we strictly recommend to carry out intensive trials to test the suitability of our products with regard to the required processes and applications. We do not accept any liability with regard to the above information or with regard to any verbal recommendation, except for cases where we are liable of gross negligence or false intention.
Introduction of Huitian
Established in 1977, Huitian is now one of the biggest adhesive manufacturers in China. There are four manufacturing bases in total, providing high performance adhesives for different industries.
Huitian has two fully automatic productions lines and the capacity is 24,000MT/Year just for flexibile packaging adhesives.
Huitian's products has been well received by domestic and international end use rs
Besides construction adhesives, Huitian also provides many others kinds of products for different industries, transportation, electronics, photovaltaic, etc.
Huitian is your reliable partner and satisfy your need of adhesives!