"folded back on itself" is a correct and usable phrase in written English.
You can use it to describe something that is folded so that one of its edges is connected to another, creating a loop. For example, you can say "The ribbon was folded back on itself to make a bow."
An unusual edge reconstruction was observed: a double layer folded back on itself, representing four layers.
There is, however, one segment of fencing at the front of the installation that is folded back on itself to leave an opening.
Here, time is folded back on itself, with the artist subtly transforming a piece of art history into something vibrant and new.
Made of common toilet paper folded back on itself in subtle undulations, the piece refers to the gentle movement of nearby Great South Bay on a calm day, when the shallows move almost imperceptibly.
"There it is," she said, pointing to a freestanding wall of honeyed wood twenty-five feet high; the surface curved and folded back on itself, like a slice of prosciutto on a platter.
In a petri dish, the cells spontaneouslybulged to form a bubble called an eye vesicle, which folded back on itself to create a half-millimeter-wide pouch layered with retinal cells — the optic cup.
But cinema has a habit of folding back on itself; this week sees the reissue of one of those imperishable 1960s films, Far From the Madding Crowd, an adaptation of the Thomas Hardy novel, in which Stamp plays the coldly raffish Sergeant Troy opposite Julie Christie's Bathsheba.
In "Mythos," time keeps folding back on itself.
It began to fold back on itself, leading to the grooved and wrinkled surface of our brains.
His debut disc, "Within and Without" (Sub Pop), folds back on itself in mewling, not unlikable tinny repetition.
A cone of pollution climbs above the never-ceasing procession of cars and Eddie Stobart lorries, folding back on itself to become a prophylactic membrane: the true Millennium Dome.
