Duo-Tang

Duo-Tang was a brand name for paper folders made of cardstock paper. They are used to bind multiple sheets of paper by bending embedded brass fasteners through the holes of the paper and folding them down to keep them in place. Some models have three teeth on the fastener, and some have six (two on the top, middle and bottom). They can be different colours such as blue, green, red, yellow and black. They are often used as an organization tool for multiple pages of one subject, chiefly by elementary school students (however, many students usually transition to binders as they enter secondary school).

Duo-Tang folders were originally manufactured by the Duo-Tang company, but the brand was bought on July 1, 2004 by Esselte.^[1] All previous Duotang products were subsequently replaced by Oxford / Esselte products or otherwise discontinued.

References

1. ^ "Duo-Tang Folders". D.C. Helms, Inc.. http://www.duo-tang-folders.com/. Retrieved 2010-03-23.