Description
BONDFLEX 550FC WINDSHIELD is a one-component, professional grade polyurethane adhesive-sealant, suitable for structural bonding in the automotive industry. It is ideal for automotive glass replacement, intended for the reinstallation of vehicle windshields. Its advanced formula includes built-in adhesion promoters, making primer unnecessary on windshields with a black ceramic coating strip. Tested according to FMVSS212 for a minimum drive away time of 1 hour.
ADVANTAGES
- Fast curing
- Superior bonding strength
- OEM quality
- Bubble-free formulation
- Can be applied without primer
- Maintains its elasticity
- Thixotropic, non-sagging formulation
- Excellent resistance to most chemicals
- Very good resistance to weather conditions
- Maintains its properties from -40oC to +90oC
- Paintable
APPLICATIONS
- Windshield bonding during replacement by professional applicators in certified areas where replacement procedures are strictly followed
- Recommended for elastic structural bonding between similar and dissimilar substrates in automotive, industrial and shipbuilding applications requiring maximum mechanical strength
- On windshields with ceramic coating (black frame), it can be applied without primer. If no ceramic coating is present, the use of a primer is required to protect the adhesive from UV radiation
Specifications
 |
 |
 |
 |
|
Coverage:
depends on width and depth of joint
|
Thinning:
no
|
Application:
by caulking gun
|
Skin formation:
20 - 35 minutes
|
 |
 |
 |
 |
|
Curing Rate:
3mm /24h
|
Exterior use
|
Interior use
|
Application temperature:
+5oC to +40oC
|
 |
|
|
|
|
Cleaning:
with white spirit
|
|
|
|
Instructions for use
INSTRUCTIONS FOR USE
Surface preparation:
The substrates to be bonded must be even, smooth, dry, free of dust and grease or other contaminants that could harm bonding (for example, silicones or oils).
In the case of windshield replacement, it is not necessary to completely remove the old PU-based sealant/adhesive from the car body, as long as it is still stable and you do not observe any problems with detachment.
There is no compatibility problem when applying BONDFLEX 550 FC WINDSHIELD directly to the old, hardened PU-based sealant/adhesive: simply cut it off, leaving a thickness of 1 to 2mm.
Make sure that there is no dirt and do not touch the bonding surface after preparing the area.
Cases of rusted or scratched pinchweld:
In case of corrosion on the bodywork, completely remove the old PU-based adhesive and wipe it well with a cloth. Then scrub the rust with a wire brush and clean again with ACETONE. Apply the special primer BONDFLEX 551 BLACK PRIMER which will prevent rust in the future, while at the same time greatly improving the adhesion of the adhesive to the bodywork. Apply the primer after shaking the container well and homogenizing the mixture. Always use a clean special application sponge. Wait 15 – 20 minutes after applying the primer to apply the adhesive. In case of a local scratch on the bodywork, do not “fill” with adhesive unless you first apply the primer 551 there.
Glass preparation:
Case of glass with a fritted ceramic coating frame:
- Check the light transmission of the ceramic-coated frame.
- Use a glass cleaner to clean the surfaces from dust and greasy residues.
- Lightly rub the ceramic surface to remove any silicone residues that could negatively affect the adhesion of the adhesive. Recommended procedure: perform 5 back and forth movements with a Scotch-Brite® Cleaning and Finishing Pad (Very Fine – Red) on the area to be treated (area where the adhesive will be applied).
- Clean the surface in a single pass with a lint-free cloth soaked in ACETONE.
- Allow a drying time of 5 to 10 minutes depending on the
room temperature.
- Do not touch the cleaned area of the windshield or glass after this procedure.
- Adhesive application:
- if the ceramic frame coating is sufficiently opaque (as checked in step 1): apply the adhesive.
- if the ceramic frame coating is not sufficiently opaque: apply BONDFLEX BLACK PRIMER 551 (refer to the Technical Specification Sheet for full instructions) with an application sponge (or a 10 ml tube with a disposable foam sponge), respecting the waiting time of a minimum of 10 to 15 minutes up to a maximum of 60 minutes before applying BONDFLEX 550FC WINDSHIELD.
Case of glass without a fritted ceramic coating frame:
- Use a glass cleaner to clean the surfaces from dust and greasy residues.
- Apply the special primer - adhesion promoter BONDFLEX 552 ACTIVATOR with a cloth by wiping the surface to be bonded to the glass.
- After BONDFLEX 552 ACTIVATOR has dried, wipe the residues again, 30’’ – 60’’ after application.
- After 10 – 60 minutes apply the primer BONDFLEX BLACK PRIMER 551 (refer to the Technical Data Sheet for full instructions) with an application sponge (or a 10ml tube with a disposable foam sponge).
- Apply the BONDFLEX 550FC WINDSHIELD adhesive, observing the waiting time of a minimum of 10 to 15 minutes and a maximum of 60 minutes.
Application:
- BONDFLEX 550FC WINDSHIELD can be applied with a manual, pneumatic or electric caulking gun.
- Store the sealant in a place above 5oC for a sufficient period of time before use.
- Hold the application gun in a vertical position (90o) and apply the sealant, either in the same path as the freshly cut polyurethane on either the bonding surface on the bodywork or on the glass, in a V-shape with a continuous movement.
- The triangular shape of the joint is determined by the shape of the special “V” nozzle.
- The glass must be applied and pressed before the product forms a surface film.
Note: all times stated in the above instructions for use apply to a minimum temperature of 15oC. For lower temperatures (between 5 and 15oC), double the drying times must be observed.
CLEANING
Clean all equipment with acetone immediately after use. After curing, abrasion is necessary.
