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| Product: |
MUNTIN BAR ACRYLIC ADHESIVE TAPE MT 190 |
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| Description: |
A cross linked polyethylene foam coated on both sides with a high performance acrylic
adhesive system developed specifically for muntin bar application and extreme
environmental exposures that does not require silane/ isopropanol pre-treatment for
adhesion to glass or ceramic surfaces.
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| MT-190: |
Gray, 1/32” thick, 6 lb. density polyethylene foam.
Note: Other foams available on special request.
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| Primary Use: |
Provide for long term indoor and outdoor bonding of glass, ceramics, primed, painted,
aluminum and plastic muntin bars without silane enhanced isopropanol pre wash. The
double-coated tape was engineered specifically resistance to air, water, detergents,
moisture, light and dust penetration. Foam is also used to fill any irregularities and
functionally provide cushioning, absorb vibration and shock, and allow for expansion
and contraction due to temperature variations. See associated sheets for specific
testing and performance data.
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| Liner: |
Available 74 lb bleached paper liner. |
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| Testing: |
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| Test Methods: |
Peel Adhesion:
PSTC #3 modified; backed with 1 mil PET.
Cleavage:
The following diagram illustrates the setup of cleavage test: glass/muntin sample
with a 6” long MT 290 tape sandwiched between glass and muntin bar. Muntin bars are
an inch longer than the tape so there is room to hang weight. 1000 gram weights are
used for 15 min dwelled samples. A 2000 gram weight is used for 72 hours dwelled
samples. Test assemblies are also placed in water or Windex solution for 72 hours
after they are dwelled at room temperature for 72 hours. A 500 gram weight is used
for testing water immersed samples.
Lap Shear:
Test specimens are setup in accord with the sketch below. The muntin bar is assembled with
a 1”×1” of MT tape and dwelled at room temperature for 15 or 72 hours. In dynamic
lap shear test, the glass and muntin are separated at reverse direction with a
constant 2 ipm speed. The maximum force that is required to separate the sample is
recorded. The static lap shear test uses a constant 1000 gram weight on the muntin.
The time of muntin failure is recorded.
Static Shear:
PSTC#7 modified; at 158°F.
Fogging:
(performed at independent lab): seal 60 in2 MT-290 tape in a test tube, expose the
tape to a constant UV source for up to 21 days at 180°F. Evaluate tape
discoloration and residue at 3, 7, 14 and 21 days.
Xenon Weatherometer:
(ASTM G26-96, performed at independent lab): Evaluate muntin bar/tape/glass assembly
under intense xenon arc weatherometer with water spray. Evaluate adhesion at 7, 14
and 30 days exposure.
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| Test Results: |
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| Product Features: |
- Excellent water and detergent resistance
- No Silane/ isopropyl pre-wash required
- Acrylic adhesive system developed for extreme environmental applications
- Excellent UV resistance
- Excellent quick stick
- Moderate shear strength
- Bonds well to irregular surfaces
- MT Series complies with AAMA 810.1-92 for Glazing
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| Notes: |
Surfaces to be bonded should be dry, clean and free from grease and oil.
Commercial window cleaners are recommended. Products should not be laminated
to any material that contains migrating plasticizer.
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| Shelf Life: |
One year when stored under cool, dry conditions.
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