摘要 |
Controlled release of fluent material to be dispensed (e.g. in an air freshener) is achieved by encapsulating the material in pockets in a web (12) and rupturing the pockets (e.g. with a brush 30) in a dispensing station (12c), the released material being entrained by air moved past the dispensing station by a fan (10). Advance of the web can be controlled by a motor (24). A stand-by web (14) can be provided for use when the current web (12) is exhausted. |