COSMOPUR 828C
THE TOUGH-HARD SPECIALIST
1-Part PUR Adhesive for Aluminium Corner Connector Bonding
COSMOPUR 828C (COSMO® PU-100.210) is a one-component, moisture-curing polyurethane construction adhesive designed for bonding corner connectors in aluminium window and door manufacturing. It is also suitable for a wide range of assembly bonding applications in construction and industry.
The solvent-free, thixotropic formulation stays in place without dripping and forms a tough-hard adhesive joint. The adhesive expands (foams) during curing, providing joint-filling properties and good bonding strength. It also offers good weather resistance and is compatible with natural stone.
COSMOPUR 828C reaches functional strength after approximately 75 minutes at +20 °C, depending on the application. After complete curing, the adhesive can be overcoated with many paint systems, subsequently powder-coated under the specified conditions or sanded.
APPLICATION EXAMPLES
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Bonding corner connectors in aluminium window and door manufacturing
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General window and door construction
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Board-joint bonding of cassettes in wood, window and entrance door construction
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Stair construction and other building applications
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Assembly bonding in construction and manufacturing
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Various industrial bonding applications
SPECIAL CHARACTERISTICS
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Tough-hard adhesive joint
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Solvent-free
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Thixotropic, non-drip formulation
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Compatible with natural stone
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Expands (foams) during the curing process
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Joint-filling properties
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Good adhesion to various types of wood, building materials, ceramics, metals, thermosets and thermoplastics after appropriate surface preparation
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Good bonding strength
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Good weather resistance
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Can be overcoated with many paint systems after complete curing
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Suitable for subsequent powder coating (30 minutes at +200 °C) after complete curing
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Can be sanded after curing
Technical Information
Basis
1-component moisture-curing polyurethane construction adhesive, solvent-free
Film Property
Tough-hard
Colour
Opaque after curing
Viscosity
Low-viscosity, thixotropic at +20 °C
Skinning Time (Dry)
Approx. 20 minutes at +20 °C / 50% relative humidity (500 µm application on PE/PVC)
Skinning Time (Wet)
Approx. 10 minutes at +20 °C, sprayed with water (500 µm application on PE/PVC)
Functional Strength
Approx. 75 minutes at +20 °C, depending on application
Curing Speed
Approx. 1 mm in 24 hours at +20 °C / 50% relative humidity
Final Strength
Approx. 7 days at +20 °C / 50% relative humidity
Processing Temperature
+7 °C to +30 °C
Applied Quantity
Approx. 200 g/m², depending on substrate material
Packaging
290 ml PE-Euro cartridge, net weight: 390 g
600 ml Alu/PP-tube bag, net weight: 775 g
TECHNICAL SUPPORT
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WEISS ASIA
Specialist adhesives, sealants and cleaners for window & door production across Asia.
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