| 摘要 |
<p>A laminate for forming a package comprises a first layer (31), a second layer (32), a first adhesive layer (33) between the first layer (31) and the second layer (32), a first opening (35) in the first layer (31), a second opening (36) in the second layer (32) at a position laterally offset from the first opening (35), a flow channel (34) between the openings (35, 36) which is openable and closable in response to a pressure differential.</p> |
