TM 10-8400-203-23 Section  Il. REPAIR PROCEDURES I 2-4.   MATERIALS Materials  used  in  the  repair  of  sleeping  bags  and  accessories,  will  be  serviceable  materials  recovered  from similar salvaged items, when authorized, or will be new material as specified in section Ill. New materials will be requisitioned  from  stock  under  the  stock  numbers  and/or  item  description  and  will  conform  to  the  appropriate specifications.  When  not  available  from  stock,  materials  may  be  purchased  locally  that  conform  as  closely  as possible to the standard material. 2-5.  REPAIR  AND  MAINTENANCE  OF  SLEEPING  BAGS,  INTERMEDIATE  COLD  AND EXTREME  COLD TYPE Il. a.  Inspection.  Inspect  the  sleeping  bag  to  determine  the  extent  of  damage,  normal  wear,  and  the  need  for repair. b. Cleaning. Clean off mud or other foreign matter with brush, damp or dry cloth, or scrub the exceedingly dirty areas with limited amounts of water that will not saturate the insulation; then rinse off and dry. c.   Repair. (1) Any filling material (feathers and down) which has been lost through holes or tears will be replaced with  filling  material  taken  from  sleeping  bags  classified  as  condition  “H”  or  with  material  obtained which conforms to Type II of MIL-F-43097 for the intermediate cold and extreme cold. Insert sufficient filling material to obtain about the same bulk as in adjacent undamaged channels, (2)  Iron-on  patches. (a) (b) (c) Cut  patches  to  the  desired  size  and  shape  such  that  the  patch,  when  applied,  will  extend approximately 3/4 inch (1.9 CM) in all directions from the tear or damaged area. Patches will have rounded corners. With the sleeping bag unzipped, place the area to be patched on a wooden or other nonmetallic surface not effected by heating or ironing. Smooth out by hand. Remove any feathers on the area to  be  patched.  Pre-warm  the  area  to  be  patched  by  pressing  with  a  household  electric  dry  or steam iron. Use a dry iron set at “cotton” or high as possible without scorching the fabric for about 5 seconds, Immediately cover with patching material previously cut in the desired size and shape. Hold the iron on the patch for about 8 seconds. Use only a slight rotating or reciprocal motion of the iron. Allow to cool about 5 seconds or long enough so that the patch will not drift off when the patched bag is removed from the table. Adjust the heating, pressing, and cooling times as required for the specific  iron  being  used,  Check  the  quantity  of  the  adhesive  bond  periodically  as  follows  and adjust heating times and temperatures of the iron accordingly. (d) Test a patch that has cooled for about 5 minutes by picking with the fingers at an edge of the patch until a tab 1/4-to 1/2-inch (0.635 to 1.27 CM) long is formed. Pull hard on the tab with fingers. A well- bonded tab will be difficult to peel off, This will indicate that iron adjustment and time heating the patch is adequate. Replace the test patch with a new patch or re-iron the old patch. 2-5