Multi-ply fibrous plasterboard web

Details Multi-ply fibrous plasterboard web Multi-ply fibrous plasterboard web

2005-08-23

2005-08-23

Chin, Peter (Department: 1731)

Paper making and fiber liberation

Processes and products

Multi-layer waterlaid webs or sheets

C162S130000, C162S132000, C162S133000

Reexamination Certificate

active

06932886

ABSTRACT:
A fibrous web including a back liner having a higher fines side with a higher fines content, a top liner having a higher fines side with a higher fines content and at least one middle layer having a higher fines side with a higher fines content, and a lower fines side with a lower fines content, at least one middle layer and the top liner being couched together, the back liner having the higher fines side in contact with the lower fines side of at least one middle layer.

REFERENCES:
patent: 5445713 (1995-08-01), Kunihisa et al.
patent: 5607555 (1997-03-01), Grossmann et al.
patent: 6159341 (2000-12-01), Egelhof et al.
patent: 6267846 (2001-07-01), Halmschlager et al.
patent: 6413369 (2002-07-01), Kinnunen
patent: 26 45 763 (1978-04-01), None
patent: 197 33 316 (1999-02-01), None
Casey, Pulp and Paper,(1980) John Wiley & Sons, 3rd ed., vol. II, p978.

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