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Plastic spiral binding is a three-step process: punch, insert, crimp. [ citation needed ] First, a punch creates holes along the edge of the document. Second, a coil inserter spins the coils through the holes.
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.
Different types of the punch and bind binding include: Double wire, twin loop, or Wire-O binding is a type of binding that is used for books that will be viewed or read in an office or home type environment. The binding involves the use of a C-shaped wire spine that is squeezed into a round shape using a wire closing device.
Coil binding uses a spring-like coil, threaded into the punched holes. Comb binding uses a plastic strip with "fingers" that clip into the punched holes. Both use their own types of specialized hole punches. Comb binding typically punches 19 or 23 rectangular holes (for letter and A4 paper sizes, respectively).
In order to bind documents with double loop wire, a binding machine and a wire closer are required. Smaller organizations will often choose a small manual wire binding machine that offers a manual hole punch and a built-in wire closer. Medium-sized users will often choose a wire binding machine with an electric punch and built-in wire closer.
German Friedrich Soennecken invented ring binders in 1886 in Bonn. [2] [3] He also registered a patent on 14 November 1886 for his Papierlocher für Sammelmappen ("paper punch for binders", or hole punch). [3] German Louis Leitz, founder of Leitz, later made some important changes to the development of ring binders in Stuttgart. [4]