I still think getting a small business license is the easiest way to go. Because being a bedding manufacture you suppose to use virgin materials in manufacture. But call your company a clothing company so you don't have to jump throughthe legal hoops of being a bedding manufactuer and having to put the "DO NOT REMOVE UNDER PENALTY OF LAW" Tags on your quilts.
Golite, Patagonia have recycling programs for used equipment but they send it the factory to have it melted down and then made in to eco insulation or fabric.
Their is company called two jupiters looks like a cottage industry they may sell you primaloft eco. They have some very expensive funky recycle jacket using primaloft eco.
But if they must have Eco Friendly sewing sleeping bags for car camping I found Soy soft batting it combination of soy fibers,bamboo,and cotton. This fabric store also has hemp fabric and bamboo fabric. They can go the full the eco friendly made bag for camping.
We use to sleep in coleman sleeping bags for camping made out of cotton batting and cotton cloth back in the 60's and 70's.