3M Reference Breakdown
3M Scotch-Weld AF 163-2K 0.06 x 36in x 50Yd Roll
3M Scotch-Weld AF 191M 0.03 x 36in x 50Yd Roll
Brand – Scotch-Weld is a trademark of 3M, used to identify a number of adhesive families.
AF – this is used to designate the product is an Adhesive Film. These identifiers can be found on a number of aerospace products including EC, EW and AC.
Product Identifier – there are a number of different adhesive film products, each one having different properties making them suitable for a range of applications.
Scrim – sometimes referred to as a carrier, this is material added to the adhesive to provide extra support and thickness. The scrims available are as follows:
K – Knitted
L – Light Mat, Non Woven
OST – One Side Tacky, Non Woven
M – Mat, Non Woven
G – Glass
XS or LS – Embedded conductive mesh (usually copper) for lightning strike applications
Some adhesive films are also supplied without a scrim, and are identified as U – Unsupported.
Film Weight – this shows the weight in Lb per SqFt of that particular combination of adhesive and scrim.
Size – products are supplied in rolls measured in inches and yards or metres and millimetres.
Nitrile phenolic follows the same pattern but do not have an identifiable scrim or film weight.
