NRS - Clifton Hypalon Adhesive Gluing Instructions
Repairs
Recommended Safety Precautions
- Work in a well ventilated area (garage or shady
area works well).
- Organic fume respirator
- Chemical resistant gloves (i.e. Nitrile gloves)
- Eye protection
- Extra lint free rags for spills/cleanup
Environmental conditions
- Ideal ambient temperature for gluing: 75°F and
below 50% humdity.
- Maximum humidity: Do not try to mix and apply glue
if the humidity exceeds 70%.
Fabric preparation
- Cut the patch to extend 2" beyond all
edges of the tear. Be sure to round the corners of the patch. Square
cornered patches are more likely to catch and peel than rounded patches.
- Trace the area of the patch on the damaged
surface with a pencil.
- Using fine sandpaper or a rasp, lightly buff the areas to be glued,
including the back side of the patch. The goal is merely to remove the
surface glaze of the material, without removing excess coating. DO NOT
buff down to the threads of the material.
- Clean the buffed surfaces with Toluene using a lint free towel. Use
of Toluene is important for achieving a good glue bond. Let the Toluene
evaporate before applying adhesive.
Accelerator - Optional
Clifton Hypalon Adhesive works well as a one-part glue. However, the addition
of Accelerator to the adhesive significantly increases bond strength and
chemical and heat resistance. It vulcanizes the rubber and speeds curing
of the glue bond. This combination of Clifton Adhesive and Accelerator is
what we use in our boat factory for producing NRS Hypalon boats.
We strongly recommend the mixture for air holding repairs and for attaching
anything that will be subjected to high load stress, such as d-rings,
carry handles and footcups. We supply a precise measuring device and complete
use instructions with the Accelerator. Follow mixing instructions carefully;
using too much Accelerator will actually weaken the glue bond.
Application of Adhesive
- Both surfaces to be joined must be coated with adhesive.
- Apply one thin, even coat of adhesive to each surface.
- Wait until this first coat of adhesive is just to
the tacky stage - approximately 10 to 30 minutes, depending on conditions.
Use the "knuckle" test - touch your gloved finger or bare
knuckle to the glue. You should feel adhesion without your finger or
knuckle sticking or adhesive coming off the surface.
- Apply a second thin, even coat to each surface. Wait
until the second coat has an even, tacky finish (surfaces should not
be visibly wet). Use the knuckle test again to gauge the tacky stage.
- Repeat Step 4 with a third thin coat to both surfaces.
Allow to dry to the knuckle tacky stage. If adhesive drys beyond this
stage, you can reactivate the adhesive by wiping the surfaces to be
bonded with a lint free cloth dampened with Toluene.
- Carefully align the two surfaces. This is a contact
adhesive and when the surfaces touch you will not be able to move the
patch. Apply vigorous pressure to the entire glued surface using a roller,
rolling from the center out. This forces air bubbles out and meshes
the two materials together. Use a lint free cloth dampened with Toluene
to wipe up excess glue.
- Complete curing time varies with different temperatures,
humidity and whether Accelerator was used. The optimal repair conditions
of above 60°F and below 50% humidity allows for a curing time of
8 - 12 hours. If at all possible, avoid repairs when the humidity is
above 70%.
- Be careful when rolling up a repaired boat for storage. Make sure
drying is complete.
Note: Year round use of 303
Protectant is recommended between uses, and before storage of your
inflatable.
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