Process to manufacture a felt with flap and a felt produced ther

Details Process to manufacture a felt with flap and a felt produced ther Process to manufacture a felt with flap and a felt produced ther

1988-03-01

1989-06-27

Hastings, Karen

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

28110, 28141, 28142, 139383A, 162199, 162272, 162358, 162DIG1, 428222, 428300, 428234, 428280, 428282, D21F 710, D04H 146

Patent

active

048429252

ABSTRACT:
Process of manufacturing a papermakers' wet press felt for the wet end and a felt produced thereby with one or two flaps (14, 10), made of two batts (12, 13) needled onto each side of the felt (1), which ends in two rows of loops (4, 5) that are intended to seam the felt, characterized in that the rows of loops (4, 5) are joined during needling by temporary, removable connecting means (6) placed in relation to the flap(s) (14, 16) which have a greater width than the widths of the finally cut flaps (14, 16).
The flap(s) (14, 10) are not damaged during the needling operation and are easily loosened without damage by removing the spiral (7) which form the temporary joining means (6).

REFERENCES:
patent: 2907093 (1959-10-01), Draper, Jr.
patent: 4476902 (1984-10-01), Westhead
patent: 4481079 (1984-11-01), Dawes
patent: 4528236 (1985-07-01), Finn et al.
patent: 4574435 (1986-03-01), Luciano et al.
patent: 4601785 (1986-07-01), Lilja et al.
patent: 4683624 (1987-08-01), Dufour
patent: 4755260 (1988-07-01), Sakuma
Landis, John, L., "Mechanics of Patent Claim Drafting", 1974, Cover and p. 169.

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