VHB™ Structural Glazing Tape
G23F / B23F
Technical Data
08/2006
Product Description
3M™ VHB™ Structural Glazing Tape is a high performance double-
coated pressure sensitive acrylic foam tape. It is used to attach glass to
metal frames in glass curtain wall systems replacing commonly used
mechanical fasteners, gaskets or structural silicone sealants.
Application performance and test results demonstrate the outstanding
durability, UV resistance and temperature performance of
3M™ VHB™ Tape acrylic foam chemistry.
Application Requirements All 3M™ VHB™ Tapes glazing projects must be reviewed on a
project-specific basis by a 3M representative to begin the structural
glazing process. 3M™ VHB™ Structural Glazing sales and Technical
Service Specialists are available to assist the customer to determine
the suitability of 3M™ VHB™ Structural Glazing Tape for structural
glazing applications.
VHB™ G 23 F / B 23 F
Adhesive
High Performance Acrylic
Adhesive Carrier
Conformable Acrylic Closed Cell Foam
Colour
Grey (G23F) / Black (B23F)
Thickness
mm
2,3 mm ± 10%
Density
kg/m³
720
Liner
Red Polyethylene Film
Construction
pg_0002
Typical Physical
Properties and
Performance
Characteristics:
i
VHB™ G 23 F / VHB™ B 23 F
Note: The following technical information and data should be considered representative or
typical only and should not be used for specification purposes.
Temperature resistance
long term
short term
°C
90
150
Peel adhesion
(N/100mm)
according to A.F.E.R.A. 4001;
after 72 h, speed 300
mm/Min.;Angle 90°; RT; Steel
350
Tensile
(N/cm²)
ASTM D-897, nach 72 h, Al
50 mm/Min.; 6,45 cm²; RT
48
(=480 kPa)
Dynamic Shear
ASTM D-1002; after 72h; steel;
12,7 mm/min; 6,45cm; RT
45
(=450 kPa)
1000
500
500
Static Shear
,
static
(g)
according to
A.F.E.R.A. 4012,
after 72 h RT; Steel;
>10.000 Min.; 3,23
cm²;
20°C
65°C
90°C
120°C
150°C
Caution: The higher the temperature the more the
viscous characteristic of the tape will dominate.
Allways do tests according to your construction.
For tape area calculation the following guidelines can be used. Please ensure that each
project is reviewed and approved by local 3M Technical Service.
Tape Design Strength
dynamic loads
(deadload support)
For dynamic tensile or shear loads (such as
windloads), a design strength of
8435 kg/m
2
or 85 kPa
is used for VHB™ Structural Glazing Tape. This
design strength guideline provides a safety factor
of at least 5 and was established based on
material property testing as well as ASTM dynamic
load testing for curtain wall applications.
Tape Design Strength
static loads
(no deadload support)
For static tensile or shear loads (such as dead
weight loads, snow loads and other long-term
loads), a design strength of
173.5 kg/m² or 1.7 kPa
can generally be used. This means that 60 cm²
VHB™ per 1 kg load should be used to support
static loads. This guideline provides a safety factor
of at least 5.
Important: Static load and dynamic load calculations should be performed on unsupported
deadload structural glazing applications. The calculation resulting in the wider tape width should
be used as the appropriate tape width for the application. Always round up to the nearest by 5
dividable tape size.
Note: Always round up to the nearest whole number dividible by 5 and never round down for
metric (mm) calculations.
pg_0003
Available Sizes:
VHB™ G23F / VHB™ B23F
Standard Length (m)
(other length on request)
16.5
Standard Width (mm)
(other width on request)
15, 20, 25, 30, 35, 40
Width Tolerances (mm)
± 0,4 mm
Core Diameter
76,2 mm
Application Guidelines
Each 3M™ VHB™ Structural Glazing Tapes application will be reviewed on
a project specific basis. Application guidelines will be based upon adhesion
test results generated by 3M Technical Service. These project specific
application guidelines will be provided to the customer and must be followed
during the glass bonding process. Listed below are some typical application
guidelines for a 3M™ VHB™ structural glazing project.
However, these do not replace the project specific application guidelines
provided by the 3M Technical Service Representative.
For maximum bond strength, all non-glass surfaces should be thoroughly
cleaned with a 50/50 IPA/water mixture to remove contaminants. Glass
surfaces should be cleaned with a 70/29.5/0.5% mixture of IPA/water/silane
solution prior to tape application.
Surfaces may require additional surface preparation that will be determined
on a project specific basis. Ideal tape application is accomplished when
temperature is between 20°C and 38°C and the bond is allowed to dwell 72
hours. Initial tape application to surfaces at temperatures below 16°C is not
recommended. Bond strength is dependent upon the amount of adhesive-to-
surface contact developed. Firm application pressure develops better
adhesive contact and helps improve bond strength. Generally, this means
that the tape should experience at least 100 kPa in roll down or platen
pressure. After application, the bond strength will increase as the adhesive
flows onto the surface. At room temperature, approximately 50% of the
ultimate strength will be achieved after 20 minutes, 90% after 24 hours and
100% after 72 hours.
Product Use
All statements, technical information and recommendations contained in this
document are based upon tests or experience that 3M believes are reliable.
However, many factors beyond 3M’s control can affect the use and
performance of a 3M product in a particular application, including the
conditions under which the product is used and the time and environmental
conditions in which the product is expected to perform. Since these factors
are uniquely within the user’s knowledge and control, it is essential that the
user evaluate the 3M product to determine whether it is fit for a particular
purpose and suitable for the user’s method of application.
pg_0004
Limited Warranty
Storage in original cartons at 21°C and 50% reative humidity.
Shelf Life
When stored under proper conditions product retains its performance and properties
for 12 month.
Limitations of
Remedies and
Liability
If the 3M™ VHB™ Tape is proved to be defective within the warranty period stated
above. THE EXCLUSIVE REMEDY, AT 3M’S OPTION, SHALL BE TO REFUND
THE PURCHASE PRICE OF OR TO REPAIR OR REPLACE THE DEFECTIVE
3M™ VHB™ TAPE. 3M shall not otherwise be liable for loss or damages, whether
direct, indirect, special, incidental, or consequential, regardless of the legal theory
asserted, including negligence, warranty, or strict liability.
3M Europe N.V./S.A.
Industrial Adhesives & Tape Devision
Hermeslaan 7
Email: umanert@mmm.com
Phone: +49 2131 14 2669
www.3M.com/industrial

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