Process for manufacturing a porous dip tube

Details Process for manufacturing a porous dip tube Process for manufacturing a porous dip tube

1980-11-24

1983-11-08

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

222190, 222211, 222464, 222564, 2642091, B29D 2700

Patent

active

044141688

ABSTRACT:
A process for making a porous dip tube for use in a pressurized container dispensing liquid material in which a mixture of polymers, one insoluble in the liquid material and a second soluble in a solvent, is extruded to form a tube and thereafter the second polymer is removed from the extruded tube to provide porosity in the wall of the tube. In use, the bulk of liquid material is forced from the bottom of the pressurized container through the tube longitudinally while gaseous matter passes through the wall of the tube to provide means to atomize the liquid material as it passes into the atmosphere.

REFERENCES:
patent: 3260421 (1966-07-01), Rabussier
patent: 3375208 (1968-03-01), Duddy
patent: 3471064 (1969-10-01), Micallef
patent: 3536796 (1970-10-01), Rock
patent: 3985271 (1976-10-01), Gardner
patent: 4027789 (1977-06-01), Dickey
patent: 4159790 (1979-07-01), Bailey
patent: 4182582 (1980-01-01), Youval et al.
patent: 4279752 (1981-07-01), Sueoka et al.

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