Perfect binding machines are used to create soft cover books. Perfect binders will apply a melted adhesive to the spine of a book block and then apply a custom cover to the spine. The finished paper back books feature a clean and square spine for a professional appearance. Perfect binding lets you use your own custom printed covers allowing for full customization of the front, spine, and back of your book. Soft cover binding machines are easy to use and requiring little training, making them perfect for small and self-publishing companies in the on-demand publishing businesses.