| 摘要 |
A method of continuously producing a series of tubular labelling sleeves, which method comprises (a) printing on each of the upper and lower outer faces of a flat tube or resilient material a sequence of desired images, the image on the upper face of the flat tube being printed in register with the image on the lower face of the flat tube; (b) removing the longitudinal edge portions of the flat tube from each of the two sides of the tube; (c) forming at regular intervals a seal across the width of the resilient material so as to seal together the upper and lower sides of the tube, steps (b) and (c) being performed in either order; and (d) severing the tube across its width along the resultant seal thereby to form a tubular sleeve. |
