Comb binding

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Two spine sizes (the larger has the capacity to bind several hundred sheets)
Spine capacity
Inches Millimeters Sheets of paper
316" 4 mm 16
14" 6 mm 25
516" 8 mm 40
38" 10 mm 55
716" 11 mm 70
12" 12 mm 85
916" 14 mm 100
58" 16 mm 125
34" 20 mm 150
78" 22 mm 175
1" 25 mm 200
1+18" 28 mm 250
1+14" 32 mm 275
1+12" 38 mm 325
1+34" 45 mm 375
2" 51 mm 425

Comb binding (sometimes referred to as "cerlox" or "surelox" binding) is one of many ways to bind pages together into a book. This method uses round plastic spines with 19 rings (for US Letter size) or 21 rings (for A4 size) and a hole puncher that makes rectangular holes. Comb binding is sometimes referred to as plastic comb binding or spiral comb binding.

Binding process[edit]

To bind a document, the user first punches holes in the paper with a specialized hole punch. Pages must be punched a few at a time with most of these machines. If hard covers are desired, they must be punched as well. In bulk applications, a paper drilling machine may be used.

Then the user chooses a spine size that will match the document. Standard sizes are 4.8 mm (316 in) (for 16 sheets of 20# paper) up to 51 mm (2 in) (for 425 sheets). Spine lengths are generally 280 mm (11 in) to match the length of letter-size paper.

The rings on the spine open and insert into the holes in the page, then rest against the body of the spine, resulting in a closure that can be opened again for making changes to the book.

Comparison with other punch binds[edit]

With this bind, the book lies flat but cannot be opened 360 degrees. For a book that can be opened such that the covers touch, a spine that does not have an obstructive body, such as a coil binding, is a better option.

References[edit]