| 摘要 |
<p>An envelope 1 has front and back edges 3 to which adhesive is applied, there being a line of perforations 7 a short distance from the edge. In order to seal the envelope 1 , the edges 3 are pressed together. The envelope 1 is opened by tearing along the perforations 7 , thereby removing the edge 3 with the adhesive applied. The envelope 1 may have more than one removable edge 4, 5, 6 with perforations 8, 9, 10 .</p> |
