PAPER FASTENER AND FILE OR FOLDER

摘要

A folder that with the use of the characteristics of paper fastener capable of retaining the state of being bent by means of a resin, can be readily inserted in even a narrow slit and attains an enhanced durability. The folder is comprised of resin-made plate material (a) including trunk part (11) extending in a longitudinal direction and a pair of fold-back pieces (12) extending from the trunk part (11), wherein the thickness of each of both end sections (14) of the plate material (a) is rendered less than at other sites, and wherein the border (13) between the trunk part (11) and each of the fold-back pieces (12) is rendered freely bendable so that in dependence upon the properties of the resin per se, the state of bending at the border (13) can be retained.