Contact Adhesive 30NF • 30H

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Handling/Application

Information (continued)

(1)

(2) Working Temperature: The adhesive and both surfaces to be bonded should be 65°F

(18°C) or above at the time of bonding. After storage at low temperature and before

using, the adhesive must be warmed to room temperature. Do not place in oven or on

stove; bring to temperature by placing in a warm room. If this is not done, the open time

and other working properties of the adhesive may be adversely affected.

Use Enough Adhesive: It is important to remember that it is difficult to use too much

adhesive, but you can have problems if you don’t use enough. 3M™ Fastbond™

Contact Adhesive 30NF must be applied to both surfaces. Adhesive can be applied by

spray (see Application Equipment Suggestions), brush or a texturing type roller.

Non-porous surfaces should require only one coat, while porous surfaces

may require two coats. Wherever you use more than one coat, be sure to

let the adhesive dry completely between coats. Hardwoods, tempered

hardboard and decorative laminates are non-porous. Soft woods, untempered

hardboard, plywood and plaster are typical porous surfaces which may require

two coats.

Note: 3M water-dispersed contact adhesives should never be thinned.

Let Adhesive Dry Completely: Under normal temperature and humidity conditions,

3M™ Fastbond™ Contact Adhesive 30NF will dry in approximately 30 minutes. In

very warm, low humidity conditions, drying may take as little as 10-15 minutes. Lower

temperatures and higher humidity mean slower drying. When the adhesive coating

completely loses its milky appearance and becomes clear it is ready to bond. You have

four (4) hours after the adhesive is dry in which to complete the bonding job. You can

bond as soon as it is dry, but the longer you wait the stronger the initial bond will be.

To speed drying, infrared heat lamps may be used. When force drying is

used, assembly and bonding must be completed while one or both of the

bonding surfaces is warm. If both surfaces are cold, reheat either or both

before bonding.

If your two surfaces do not grab onto each other immediately when brought

into contact, the adhesive has dried too long or not enough adhesive was

applied. In either case, another coat of adhesive over each surface will remedy

the problem.

Apply Pressure Thoroughly: Bonding is immediate upon contact. Sustained

pressure is not required, but good uniform pressure must be applied to every square

inch of the surface. Apply pressure by using heavy body pressure on a small (not

over 3”) hand “J”-roller. The use of a pinch roll is preferred for optimum

performance.

Note: Rolling pins and other wide rollers are unsatisfactory because they

bridge low spots and because they distribute the pressure over too large

an area.

Assembling: Position the surfaces carefully before assembly. No adjustment

is possible after the adhesive films make contact. Use the paper slip sheet

method or spacers to position large pieces.

Finishing: Bonded assemblies can be machined, trimmed and finished

immediately after bonding.