Paper making and fiber liberation – Processes and products – Non-uniform – irregular or configured web or sheet
Patent
1987-02-20
1989-05-30
Chin, Peter
Paper making and fiber liberation
Processes and products
Non-uniform, irregular or configured web or sheet
162111, 162113, 162117, 162204, 162280, 162281, 162289, 162306, 162361, 162362, 162363, D21H 502
Patent
active
048348384
ABSTRACT:
A sheet of fibrous web material having opposite smooth surfaces, an apparent bulk in the range of about 0.10 to about 0.20 caliper pts/lb ream and a machine direction stretch of at least 8%, wherein surface undulations on the opposite smooth surfaces of the sheet have an amplitude variance of less than 0.0002 inch. The invention includes an apparatus and a method of manufacturing the product comprising partially dewatering a wet fibrous web to about 30% to 50% solids, conveying the web to a compression nip defined by a smooth-surfaced roll and a smooth-surfaced fabric material, moving the fabric material at a speed of about 10% to 20% less than the surface speed of the smooth-surfaced roll, compressing the web in the nip with a compression force of less than 15 lbs/linear inch, with an average pressure of less than about 50 psi in the compression nip, and drying the web. The dried web has an apparent bulk less than 0.20 caliper pts/lb ream.
REFERENCES:
patent: Re28459 (1975-07-01), Cole et al.
patent: 790023 (1905-05-01), Arkell
patent: 1548790 (1925-08-01), Lorenz
patent: 2624245 (1953-01-01), Cluett
patent: 3290209 (1966-12-01), Ihrman
patent: 3301746 (1967-01-01), Sanford et al.
patent: 3537954 (1970-11-01), Justus
patent: 3595745 (1971-07-01), Cronin
patent: 3598697 (1971-08-01), McKie et al.
patent: 3806407 (1974-04-01), Bruinsma
patent: 3821068 (1974-06-01), Shaw
patent: 3974025 (1976-08-01), Ayers
patent: 3994771 (1976-11-01), Morgan, Jr. et al.
patent: 4072557 (1978-02-01), Schiel
patent: 4208459 (1980-06-01), Becker et al.
patent: 4309246 (1982-01-01), Hulit et al.
patent: 4420372 (1983-12-01), Hostetler
patent: 4440597 (1984-04-01), Wells et al.
patent: 4469735 (1984-09-01), Trokhan
patent: 4513051 (1985-04-01), Lavash
patent: 4528239 (1985-07-01), Trokhan
patent: 4551199 (1985-11-01), Weldon
patent: 4637859 (1987-01-01), Trokhan
Chin Peter
James River Corporation
LandOfFree
Fibrous tape base material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fibrous tape base material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fibrous tape base material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2150142