| 摘要 |
A hand operated fluid dispenser comprised of a sealed flexible reservoir chamber containing a fluid, a channel capable of blockage by finger pressure applied to a specific position, a flexible pump chamber drawing fluid from the reservoir via this channel, and a pump cycled by external finger pressure applied to a layered array of the channel and pump chamber. This class of simple, inexpensive, disposable dispensers is particularly useful in packaging cosmetics, foodstuffs, and healthcare products. As pocketable dispensers they are popular for conveniently dispensing small amounts of stored viscous liquids easily damaged when exposure to the atmosphere, a condition where sealed reservoirs coupled with airless pumps work together successfully preventing product contamination, deterioration and loss. |
