Sealers and Adhesives

8/12/2019 Sealers and Adhesives

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SEALERS AND ADHESIVES

PREPARATIONAND APPLICATION


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HEALTH AND SAFETY

Always use in a well ventilated area, use

an Organic Vapour Respirator to protectyourself from fumes.

Wear gloves to prevent skin contact.

Wear overalls to prevent contaminationwith sealants and adhesives.

Wear eye protection.


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SPRAY SEALERS


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SPRAY SEALERS

Remove all dirt, grease etc.

Adjust the air regulator/distance toachieve required spray pattern.

Change the cartridge and clean the gunafter use.

Always clean the spray gun and screw influid needle after use.


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GUN SEALANTS


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GUN SEALANTS

Clean and degrease the area.

Apply a coat of etch primer.

Cut the nozzle and squeeze out a bead of

sealer to the required shape.

Most sealers can be painted over after 1

hour.


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BRUSH SEAM SEALER


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BRUSH SEAM SEALER

Clean and degrease the area.

Apply the seam sealer with a stiff brush.

Brush on seam sealer can be painted over

after 3 hours.


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TYPES OF ADHESIVES

Water based adhesives for example P.V.APoly-Vinyl-Acetate.

Contact solvent based adhesives such asevostick these are applied to bothsurfaces and allowed to go tacky before

joining the parts.

Superglues or fast setting CyanoacrylateAdhesives these are acrylic resins thatreact to moisture which helps them to set.


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TYPES OF ADHESIVES

One pack Polyurethane adhesives that are

applied with a gun and cure by solventevaporation.

Two pack adhesives that require a

catalyst or hardener and cure by achemical reaction.


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BONDING NON-STRUCTURAL

BODY PANELS


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BONDING BODY PANELS

Use a two pack adhesive with a hardener.

Clean surfaces to be bonded back to baremetal and apply a degreaser.

Apply adhesive bead, taking care to cover

all bare metal surfaces. Spread out using a plastic spreader or

brush to ensure corrosion protection.


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BONDING BODY PANELS

Apply an additional bead to either thereplacement panel or the inner structure.

Clamp panel in position, and clean off anyexcess adhesive.

Apply weld through primer and weld anyareas as required.

Spray Inner Cavity Wax between thepanels to prevent corrosion.


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BONDING BODY PANELS

Remove clamps after 4 hours at 23C,

longer if temperature is below this. Higher temperatures will speed up the

drying process.

Allow 24 hours for curing beforereturning vehicle to service.


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BONDING METAL


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BONDING METAL

Use a two pack adhesive with a hardener.

Clean surfaces to be bonded back to bare metal

and apply a degreaser

Apply a bead of adhesive, taking care to cover all

surfaces to be bonded. Smooth adhesive with a plastic spreader, clamp

the parts within 5 minutes.

Leave to cure following the manufacturers

instructions before removing the clamps.


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BONDING UPHOLSTERY


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BONDING UPHOLSTERY

Use a spray on contact adhesive.

Clean surfaces to be bonded and selectspray pattern.

Spray adhesive from a distance of 10-20

cms. Close the bond between 5 and 15 minutes

after application.


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ADHESIVE TAPES


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ADHESIVE TAPES

Clean the old adhesive tape off the part

and degrease the surfaces to be joined.

Remove protective liner from the new

adhesive tape.

Apply the tape to the to moulding and

secure to the original position on vehicle.


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WINDSCREEN BONDING


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WINDSCREEN BONDING

Use a one pack polyurethane adhesive

Touch up any pinch weld damage withprimer paint.

Apply Adhesion Promoter Primer to glass.

Wipe on/wipe off.

Open sachet, cut nozzle to shape andapply windscreen adhesive to screen orpinch weld.

Sealers and Adhesives

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