Paper making and fiber liberation – Processes and products – Pore forming in situ
Patent
1973-12-26
1977-02-08
Bashore, S. Leon
Paper making and fiber liberation
Processes and products
Pore forming in situ
162146, 162157R, 162158, 162184, 162190, 260 296XA, D21D 300
Patent
active
040070832
ABSTRACT:
A method of producing textile-like non-woven essentially binderless webs from fiber furnishes at least about 70% of which comprise man made non-fibrillatable low denier fibers having no large area flat surfaces and which are at least about 1/4 inch in length with a length to diameter ratio of between about 400:1 and 700:1. The method includes a wet laying system in which sufficient wetting agent is added to the water used in dispersing the fibers to wet the fibers completely and reduce the surface tension of the water to between about 30-35 dynes. It also includes agitating the dispersion vigorously to create tumbling water surface conditions in which up to, but less than about 4% by volumeof air is entrained in the water in the form of tiny air bubbles to create a water/air emulsion in which the fibers are dispersed without generating any substantial amount of surface foam. A viscosity modifier in the form of a natural or synthetic gum is also added to stabilize the emulsion and help prevent the dispersed fibers from reflocculating.
REFERENCES:
patent: 2857370 (1958-10-01), Sundberg
patent: 3013035 (1961-12-01), Huber et al.
patent: 3057889 (1962-10-01), Schenck
patent: 3067087 (1962-12-01), Gorski et al.
patent: 3115438 (1963-12-01), Randall
patent: 3187026 (1965-06-01), Klass
patent: 3722469 (1973-03-01), Bartley et al.
patent: 3794557 (1974-02-01), Harmon
Casey, "Pulp & Paper" 2nd ed., vol. 2 (1960) p. 766.
Calkin, "Modern Pulp & Paper Making," 3rd ed. (1957) p. 312.
Battista, 37 Syn. Fibers in Papermaking" (1964), p. 269-282.
Godsay Madhu P.
Kent Joseph N.
Ring Michael
Swenson Roy S.
Bashore S. Leon
Chin Peter
Howson John A.
International Paper Company
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