Carpet Backing Repair, - Product to Fix? Options

[StarBear]

A question for this esteemed world of 914 experts: I'd like to repair the backing on the little carpet piece (it's original) behind the driver's seat (see photos). Looks like a clear vinyl or PE/PP coating. Anyone know of a product or bush-fix to repair this backing?
Also, BTW, anyone know the meaning/indication of the "TSB" stamping in the fourth photo?
Thanks!!

[StarBear]

OK; experimented. Didn't get/use the fiberglass mesh as carpet was just cracked and bent with no splits. Stretched slightly and lightly tacked. Heated with hair dryer and tapped gently with flat edge of a ballpeen hammer (used for shaping metal). This flattened the ridges and somewhat shmoosed the cracked backing together. "Tack welded" with dots of super glue in places of loose carpet fiber, dots of hot glue gun, followed by a thin ribbon of hot glue along each cracked line. Also touched up edge piping. Trimmed loose fiber hairs along piping and used to fill small missing spots of carpet fiber on the top surface with small dots of super glue. See photos.
Granted, a hobo fix, but a) cheap as all existing materials on hand and b) it's on the back side of carpet behind the driver's seat.
No Pebble Beach or Amelia Island class job, but will preserve it just so long as I'm careful with moving the drivers seat back over the carpet piece so as not to scrunch it up again.