Soft cover or paperback books are made with an adhesive binding called "perfect binding."
Perfect binding is a budget-friendly manufacturing option. In the perfect binding process the sections are gathered, the spine is skived off, a thick covering of glue is applied, a paper cover is adhered to the spine, and the book is trimmed to size in one high speed operation.
Paper covers are printed on cover weight stock, and can be enhanced with a variety of treatments to catch the buyer's eye.
Mylar lamination is highly recommended for paperback covers to protect them from scuffing in transit. Laminations are offered in a variety of flat and gloss finishes, and can be embossed with a linen or cambric finish to add a cloth-like appearance.