SatanicSam

Thank you so much that awnsers the question Because it is disolved in water

I think that would happen if you added heat since "Sodium Borate + Heat + Sodium Bicarbonate" Reacts only with heat although it would make sence but you could be wrong, If anyone knows for sure please reply.

So Pva and borax form a bond, when you convert the borax to boric acid it no longer has that bond. If you add sodium bicarbonate than there is the same or a very similar bond almost like if the boric acid got turned back into borax. So whats the reaction with boric acid and sodium bicarbonate?