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8711 two-componenet polyurethane adhesive, flexible packaging adhesive, lamination adhesive

8711

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Description

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INTRODUCTION OF 8711

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8711A in combination with Hardener 8711B is a two-component polyurethane adhesive for various film/film laminates, 8711A/8711B is used for making high performance composite films. In a variety of film/film composite process it showed excellent bonding performance. This product has low viscosity and shorter curing time; the film has a good wet ability and other characteristics, and has lower solvent residues, suitable for high-solid, low –viscosity and high-speed dry composite processing technology.

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I. Properties

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1. Preparation of Adhesive Mixture: After having added the right quantity of solvent to 8711A and having achieved the required solids 8711B has to be stirred into the 8711A/solvent mixture.

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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.

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8711A | 8711B | Solvent | Solids Content | Viscosity |
25KG | 5 KG | 20KG | 45% | 15-17s |
25KG | 5 KG | 26.3KG | 40% | 13-15s |
25KG | 5 KG | 34.3KG | 35% | 11-13s |
25KG | 5 KG | 45KG | 30% | 10-12s |
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* Viscosity is based on the average viscosity of the Ford cup 3/25°C.



Typical working concentration - viscosity curves are as follows:

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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 4hours, if more than 4 hours should be abandoned, otherwise it may lead to unstable composite films.

Tropical area (Temperature >28°C + humidity >60%)pot life:Mixed good adhesive should be used up within 2 hours.

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4. Pressure adjustment: Appropriate increase in composite temperature and compound roll pressure can improve the bonding effect and surface finish of the composite.

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5. 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.

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6. Film properties: The completely cured 8711 polyurethane film is transparent, odorless, elastic and resistant.

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7. Matters needing attention

As the adhesive contains polyisocyanates any contact with skin has to be removed.

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INTRODUCTION OF HUITIAN

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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.

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Huitian has two fully automatic productions lines and the capacity is 24,000MT/Year just for flexibile packaging adhesives.

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Huitian& acute;s products has been well received by domestic and international end users.



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Besides flexible packaging 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!

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