Apparatus for partially slitting absorbent boards

Details Apparatus for partially slitting absorbent boards Apparatus for partially slitting absorbent boards

1988-09-12

1991-08-13

Phan, Hien H.

Severing by tearing or breaking

Breaking or tearing apparatus

Including means to apply thermal shock to work

225 97, D01D 542

Patent

active

050389890

ABSTRACT:
Apparatus having two spaced rolls with a plurality of intermeshed disc-like teeth. The rolls form a nip into which an absorbent board is fed for partial slitting. The board is comprised of both long and short fibers. The apparatus separates the short fibers at each slit while leaving a number of long fibers intact to maintain a unitary structure. Advantageously, the teeth of one roll form gaps slightly wider than the thickness of the long fibers with the teeth of the other roll to permit passage of the long fibers.

REFERENCES:
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patent: 2621622 (1952-12-01), Henchert
patent: 3035497 (1962-05-01), Whitehead et al.
patent: 3156016 (1964-11-01), Dunlap et al.
patent: 3518921 (1970-07-01), Muller
patent: 3577724 (1971-05-01), Greene
patent: 3679111 (1972-07-01), Volans
patent: 3939744 (1976-02-01), Junker
patent: 4459888 (1984-07-01), Frye
patent: 4635316 (1987-01-01), Towne et al.

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