| 摘要 |
A folder, comprising two sheets of plastic joined along an elongated length by a securement, retains a small stack of sheets inserted therein without the need for additional binding mean, retaining force, or an additional sealed edge or auxiliary maintaining surface. The stack of sheets is easily inserted and removed from the folder because three of the four edges of the folder are unsealed. When the stack of sheets is inserted into the folder, so that a securing edge of the stack is disposed proximal to the securement of the folder, the stack is retained in place, due to the force produced by the firmness of the sheets coupled with the tightness of the securement.
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