| 摘要 |
<p>Two component holder comprising an open-ended rectangular section jacket into which can fit a panel with turned-back ends which can retain the edges of a document and seal the ends of the jacket. One end of the panel has a handle. Both components can be made very cheaply as extruded (and formed) tubular sections, thus allowing composite structure to be cheaper and stronger than unitary holders made by folding and heat sealing film.</p> |
