WHAT IS SIDE BAG CLOSING?

Side bag closing is an important step but often overlooked.

Hinge book

Side bag closing is to use a thin amount of molten glue to attach the inner cover to the first and last page.

Although side bag closing is a small application compared to book binding, it plays an important role for two reasons:

  • Help create a inner hinge on the cover that reduces the pressure on the back of the book when the book is bent or opened.
  • Bring a perfect look to the book.

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