Manufacture of wetlaid nonwoven webs

Paper making and fiber liberation – Processes and products – Plural fiber containing

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Details

1621572, 1621576, 1621577, 1621646, 1621681, 1621682, 162177, 162202, D21H 512

Patent

active

049255282

ABSTRACT:
A method for forming a fabric web by wet-laying fibers on paper-making equipment, the web comprising staple length natural or synthetic fibers and optionally wood cellulose papermaking fibers and an adsorbed polymeric surface active agent. The method comprises making up an aqueous fiber furnish with a polymeric surfactant having a plurality of both hydrophilic and hydrophobic groupings per molecule. The polymeric surfactant is adsorbed by the fibers and may be added to the fibers or it may be included in the aqueous carrier medium. In either case, the finished web contains and is improved by the inclusion of the polymeric surfactant.

REFERENCES:
patent: 4179543 (1979-12-01), Hawkins
patent: 4294883 (1981-10-01), Hawkins
patent: 4655877 (1987-04-01), Horimoto et al.

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