| 摘要 |
<p>Bubble film (1), preferably with filled pockets (2), is sealed with a cover film (3) by passing between a sealing roller (8) and a plastic forwarding roller (5). The forwarding roller (5) has an internal pressure chamber connected through a rotary connection (12) to an air pump (17). The pocketed periphery has a lower elastic modulus than metal and the partitioned pressure chamber is sealed with side covers (11). The bubble positions are measured by a sensor (9).</p> |
