Structural Adhesive Film AF 191

Technical Datasheet

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Primer Application

3M™ Scotch-Weld™ Structural Adhesive Primer EC-3917 corrosion inhibiting primer

has been successfully used with 3M™ Scotch-Weld™ Structural Adhesive Film

AF 191 using the following procedure:

Spray Application: Refer to Scotch-Weld EC-3917 Primer Technical Data Sheet for

equipment and technique.

Primer Dry Cycle:

Air Dry:

30 minutes minimum at ambient temperature.

Force Dry:

60 minutes at 250°F in an air circulating oven.

Primer Thickness:

Approximately 0.1 mil (dry).

Adhesive Layup

Care should be taken to avoid contaminating adhesive and cleaned aluminum by any

substance which will hinder wetting action of the adhesive.

A. Film Application

1. Cut portion of film to be used from roll with protective liners in place.

2. Remove paper liner from one side of the film.

3. Place film on metal using a separating liner as a protective cover.

4. Roll film into position with a rubber roller, insuring that no air is trapped

between film and panel.

5. Remove second protective liner.

6. Assemble parts, apply pressure, and cure.