TM 5-1940-321-13&P
d. Application of Glue. For general patching, the craft should be inflated to 180 mbar (2.6 PSI)
rather than the normal 240 mbar (3.5 PSI).
( 1 ) Glue is applied to the two surfaces being joined using a modified paint brush.
Modify the paint brush by cutting the bristles to a 1-inch length. Use natural
bristle brushes. Synthetic bristles may dissolve in the solvents. Rub the bristles
and shake the brush to remove any loose bristles before use. Use masking tape
to ensure glue is applied only to the areas to be joined, as shown in figure F-8.
Excess glue must be removed later. When applying masking tape, tape an area
1/8 inch larger than the patch. This will make aligning the patch easier and
ensure the edges are well glued.
Figure F-8. Tape Applied Around Area Not to Receive Glue.
( 2 ) For neoprene glue, twp applications of glue are required, five minutes apart. For
polyurethane glue, three applications are required 5 minutes apart. Brush the
glue well into the fabric as shown in figure F-9. Apply the glue evenly over the
area. A thin and even coat of glue is required. Avoid high points of glue that will
be visible under the patch.
F-12
