| 摘要 |
In making the product, the manufacturer coats a longitudinal band of a web with a release coating. A longitudinal pressure-sensitive adhesive strip is applied in a longitudinal band on the web. Transverse glue lines are provided and the web is longitudinally folded, bringing two portions of the web into face-to-face contact. As a result, the transverse glue lines define individual envelope pockets and the release-coated surface on the first web portion becomes applied to the longitudinal adhesive strip on the second web portion. At the same time, the release-coated band of the first web portion is longitudinally severed from the remainder of the first web portion, thereby creating a separate peel-off strip removably covering the band of pressure-sensitive adhesive. The peel-off strip is manufactured while the envelope is being manufactured, and out of the same paper or paper-like material. The manufacturer can print, e.g. in multi-colors, on the portion of the web that becomes the peel-off strip, so that it can bear more attractive, more imaginative graphics, and registration of the peel-off strip on the web is a automatic task.
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