Wire Binding

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Wire Binding is one of the most popular commercial book binding methods used in North America and is known by a number of different names including twin loop wire, wire-o, double loop wire, double-o, ring wire and wirebind. With this binding method, users insert their punched pages onto a "C" shaped spine and then use a wire closer to squeeze the spine until it is round.^[1]. Documents that are bound with wire binding will open completely flat on a desk and allow for 360 degree rotation of bound pages.

1 Hole Patterns / Pitches:
2 Wire Binding Process
3 Wire Binding Equipment
4 References

[edit] Hole Patterns / Pitches:

There are three common hole patterns used in binding documents with double loop wire. Each hole pattern has specific sizes and applications where it is best suited. Here is a quick overview of the different options...

[edit] 3:1 Pitch (3 Holes Per Inch)

The three to one pitch hole pattern is most commonly used for binding small sized documents with double loop wire. Spines for this binding style are available in sizes between 3/16" and 9/16" in diameter. Three to one pitch wires are not available in sizes larger than 9/16". The size of the holes used with this pattern simply does not allow for larger spines to be manufacturered. The hole pattern used for 3:1 pitch wire binding can use either square or round holes.

[edit] 2:1 Pitch (2 Holes Per Inch)

Although a two to one pitch hole pattern is most commonly used for binding larger sized documents it can also be used for binding smaller diameter books. Two to one pitch wire is most commonly found in sizes ranging from 5/8" up to 1-1/4". However, a couple of manufacturers make special small sized 2:1 pitch wire for binding documents as small as 1/4".^[2]. The holes for this type of binding are normally rectangular but can sometimes be square or round depending on the manufacturer of the punching equipment that you use.

[edit] 19 Loop Wire

In the past, some comb binding machines would come with a wire closer. These machines were designed to be used with 19 loop wire. Nineteen loop wire is designed to be used with a plastic comb binding pattern. This hole pattern will have longer rectangular holes that are 9/16" on center. This style of binding used to be referred to as Ibiwire which was Ibico's name for this style of binding. However, when Ibico was purchased by the General Binding Corporation these type of supplies were discontinued. Today, 19-loop wire is commonly called Spiral-O Wire.^[3].

[edit] Wire Binding Process

Binding documents using the double loop wire involves five basic steps. These steps include ..."^[4]

Assemble your document including covers and measure the book to determine the correct size of spine.
Set up your binding machine so that the holes are correctly centred on your paper.
Separate your document into appropriate sections and punch it using your wire binding machine or modular binding punch.
Hang the pages of your document onto the "C" shaped wire spines.
After carefully moving the pages of your document over to the wire closer, use the machine to squeeze the spine together until the "C" shape becomes an "O" shape.

[edit] Wire Binding Equipment

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. The highest volume wire binding users such as binderies, print shops and in-plant printers will usually separate the punching and finishing stages of the binding process in order to increase productivity. These users will often use a heavy duty modular interchangeable die punch or an automated punching system along with either a manual or an electric wire closing machine.

Although there are a number of different makers of wire binding equipment some of the best know include the General Binding Corporation, Renz, and Akiles Products.