Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1993-11-15
1995-08-01
Bennett, Henry A.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
34120, F26B 1900
Patent
active
054371074
ABSTRACT:
A method and apparatus for drying of a cellulosic fibrous structure having constant basis weight and/or density or multiple regions varying in basis weight and/or density. Such a cellulosic fibrous structure may have a nonuniform moisture distribution prior to drying by the disclosed method and apparatus. An equally or more uniform moisture distribution is achieved by providing a micropore medium in the air flow path which has a greater flow resistance than the interstices between the fibers in the cellulosic fibrous structure web. The micropore medium is the limiting orifice in the air flow used in the drying process. The micropore medium may be executed in a laminate of plural laminae, each of successively increasing or decreasing pore size. This arrangement provides the advantage that minimal sagging or deformation of each lamina into the next coarser lamina occurs and lateral air flow between the micropore medium and the cellulosic fibrous structure is reduced. The micropore medium may be disposed either upstream or downstream in the air flow path of the cellulosic fibrous structure to be through-air dried.
REFERENCES:
patent: Re28459 (1975-07-01), Cole et al.
patent: 1666472 (1928-04-01), Seybold et al.
patent: 1808493 (1931-06-01), Burden
patent: 2069119 (1937-01-01), Standley et al.
patent: 3432936 (1969-03-01), Cole et al.
patent: 3919783 (1975-11-01), Cirrito
patent: 4172910 (1979-10-01), Rotar
patent: 4251928 (1981-02-01), Rotar et al.
patent: 4329201 (1982-05-01), Bolton
patent: 4361466 (1982-11-01), Wong et al.
patent: 4528239 (1985-07-01), Trokhan
patent: 4529480 (1985-07-01), Trokhan
patent: 4556450 (1985-12-01), Chuang et al.
patent: 4583302 (1986-04-01), Smith
patent: 4888096 (1989-12-01), Cowan et al.
patent: 4921750 (1990-05-01), Todd
patent: 4942675 (1990-07-01), Sundovist
patent: 4953297 (1990-09-01), Eskelinen et al.
patent: 4973385 (1990-11-01), Jean et al.
patent: 5013330 (1991-05-01), Durkin et al.
Ensign Donald E.
Knight Wilbur R.
Trokhan Paul D.
Bennett Henry A.
Huston Larry L.
Linman E. Kelly
The Proctor & Gamble Company
LandOfFree
Limiting orifice drying of cellulosic fibrous structures, appara does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Limiting orifice drying of cellulosic fibrous structures, appara, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limiting orifice drying of cellulosic fibrous structures, appara will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-727835