Nonwoven fabric-like product using a bacterial cellulose binder

Details Nonwoven fabric-like product using a bacterial cellulose binder Nonwoven fabric-like product using a bacterial cellulose binder

1989-01-23

1990-04-24

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162145, 162146, 162148, D21H 512

Patent

active

049197533

ABSTRACT:
The present invention is a method of bonding a fibrous wet laid nonwoven fabric-like product using bacterial cellulose as a binder. The bacterial cellulose most useful for the invention is the type formed in an agitated culture. Microorganisms of the genus Acetobacter which are genetically adapted to be good cellulose producers under agitated conditions are preferred cellulose producers. From 1-30% of the bacterial cellulose may be added to a water slurry of other sheet forming fibers as a binder. Preferably 20% or less bacterial cellulose is used since higher amounts retard drainage rates significantly. Bacterial cellulose conveys many desirable properties such as excellent hydrophilicity with low air porosity and high tensile index. It may be used in many cases as a total replacement for the latex binders now used for manufacture of nonwoven fabrics. Bacterial cellulose is especially well adapted for the manufacture of pattern bonded sheets.

REFERENCES:
patent: 2026253 (1935-12-01), Sanborn
patent: 3350260 (1967-10-01), Johnson
patent: 4070235 (1978-01-01), Marshall
patent: 4320198 (1982-03-01), Mynatt
patent: 4588400 (1986-05-01), Ring et al.
patent: 4655758 (1987-04-01), Ring et al.
Casey, Pulp and Paper, 3rd ed. (1980), vol. II, p. 1130.

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