How to store printed matter?

How to store printed matter
So we print 100 of fold 1. Put it in a pile.

We print 100 of fold 2. Put it in another pile.

There are 8 folds to a section and 11 sections in the book, the last section being only 4 folds.

How do I store them flat, clean and not in sunlight?

There are 84 folds in the book

Is that 84 piles?

So I need card to divide the piles so I can store them on top of each other.

How many pieces of card? 84?

The card needs to be at least 60cm x 30cm.

That's bigger than A3 and smaller than A2.

Mark suggested hardboard.

We could get 6 sheets of 1220mm x 2240mm (14 dividers per sheet) @£5.68 per sheet

14 dividers x 6 sheets = 84 dividers

6 sheets cost £34.08 plus cutting to size costs.

A boring way of spending yer money but a possible solution.