초록 ▼

A multi-layer film (22) covers an aperture (21) in a rigid container (10) to provide a filtered venting system (C) for the container. The film includes a porous filter layer (36,36') of a material such as polytetrafluoroethylene foam which filters bioburden from air as it enters the container during

A multi-layer film (22) covers an aperture (21) in a rigid container (10) to provide a filtered venting system (C) for the container. The film includes a porous filter layer (36,36') of a material such as polytetrafluoroethylene foam which filters bioburden from air as it enters the container during the dispensing of a fluid from a nozzle (14) in the container. The film also includes a barrier layer (34,34') of an impermeable material that prevents air from entering the container during transit and storage and prevents blockage of the porous layer with dried fluid. Before dispensing, the film is stretched, thereby destroying the integrity of the barrier layer and allowing air to enter through the porous layer.

대표청구항 ▼

[ Having thus described the preferred embodiment, the invention is now claimed to be:] [3.] A fluid dispensing system for dispensing fluids susceptible to airborne contamination, the system comprising:a reservoir including:a container for holding the fluid,a dispensing tube for dispensing fluid from

[ Having thus described the preferred embodiment, the invention is now claimed to be:] [3.] A fluid dispensing system for dispensing fluids susceptible to airborne contamination, the system comprising:a reservoir including:a container for holding the fluid,a dispensing tube for dispensing fluid from the container, andan aperture defined in the container for admitting air to the container;a multi-layer film covering the aperture which selectively seals the aperture during transit and storage of the container and filters air entering the container during dispensing of the fluid; anda housing for supporting the reservoir.