COSMOFEN 345
THE BONDING & SEALING SPECIALIST
PVC Assembly Adhesive & Sealant for Window and Door Profiles
COSMOFEN 345 (COSMO® SL-660.150) is a solvent-based PVC diffusion adhesive and sealant for structural bonding of rigid PVC components and selected joint-sealing applications in window and door manufacturing.
The thixotropic, non-drip formulation forms an elastic adhesive joint and offers good weather and UV resistance. It is particularly suitable for bonding additional profiles, cover caps and shutter guides, as well as sealing profile connections during window and door assembly.
With an open time of approximately 45–60 seconds under specified test conditions and functional strength after approximately 8–10 minutes when bonding stress-free battens, COSMOFEN 345 supports efficient assembly processes. It can also be used for sealing joints up to 7 mm wide but is not suitable for expansion joints.
APPLICATION EXAMPLES
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Fast structural bonding of rigid PVC components
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Bonding additional profiles in PVC window and door manufacturing
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Bonding sill drips, drain bars, blow bars and shutter bars
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Bonding cover caps and shutter guides in PVC profiles
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Sealing profile connections with transoms and frame extensions
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Joint sealing up to 7 mm, e.g. between window sills and window profiles (not suitable for expansion joints)
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Structural bonding of rigid PVC foam boards, e.g. FOREX®, in trade fair and promotional sign construction
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Bonding cover and end caps on rigid PVC profiles, e.g. fence posts
SPECIAL CHARACTERISTICS
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Elastic adhesive joint
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Thixotropic, non-drip formulation
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Wide range of applications with different plastic materials
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Good weather resistance
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Good UV resistance
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Suitable for structural bonding and selected joint-sealing applications
IMPORTANT APPLICATION NOTES
For structural diffusion bonding, joint gaps must be less than 0.2 mm. When used for joint sealing, the material shrinks to approximately 50% of its original size during curing. Not suitable for expansion joints or bonding pressure pipes.
CERTIFICATES & TEST REPORTS
French VOC Emission Classification
French VOC-Emission class C
Technical Information
Basis
Thermoplastic polymers in solvent
Film Property
Elastic
Colour
White after curing
Viscosity
Medium-viscosity to paste-like at +20 °C
Density
Approx. 1.01 g/cm³ at +20 °C
Open Time
Approx. 45–60 seconds at +20 °C / 50% relative humidity (150 µm application on glass)
Functional Strength
Approx. 8–10 minutes for bonding stress-free battens
Loadability of Bonded Joint
After approx. 16 hours; remaining curing may take up to 8 weeks depending on conditions
Curing Time (Approx. 90%)
Approx. 24 hours at +20 °C / 50% relative humidity
Applied Quantity
Approx. 8 g/running metre for 20 mm wide battens
Approx. 16 g/running metre for 40 mm wide battens
Processing Temperature
+10 °C to +30 °C
Packaging
310 ml PA cartridge, net weight: 305 g
Other trade unit sizes available on request
TECHNICAL SUPPORT
Need help choosing the right adhesive or cleaner?
Talk to our team about your materials, bonding requirements and production process. Together, we’ll find a suitable bonding solution for your application.
WEISS ASIA
Specialist adhesives, sealants and cleaners for window & door production across Asia.
ADHESIVES & SEALANTS
+ Aluminium Systems
+ PVC Systems
+ Wood Systems
+ Special Cleaners
CONTACT
Weiss Chemie Asia Limited
Room D, 7/F, Hollywood Centre,
77-91 Queen’s Road West, Sheung Wan,
Hong Kong
Email: info@weiss-asia.com
