Process and coating composition for coating a paper web

Details Process and coating composition for coating a paper web Process and coating composition for coating a paper web

2005-05-17

2005-05-17

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Processes and products

With coating after drying

C162S136000, C162S181200, C162S184000, C162S204000, C162S147000, C162S205000, C162S206000, C106S465000, C106S467000

Reexamination Certificate

active

06893536

ABSTRACT:
The invention relates to a process for producing a coated paper web, According to the process, a paper web is formed from a fibrous raw material in a paper machine, the paper web is coated with a pigment-containing coating mix, and the coated paper web is calendered. According to the invention, the paper web is coated with a coating composition that contains as the mineral pigment mainly a mixture of gypsum and calcium carbonate, the amount of gypsum being at minimum 10% by weight of the total amount of gypsum and calcium carbonate. With mixtures of calcium carbonate and gypsum, such as mixtures of PCC and gypsum and mixtures of PCC, ground carbonate and gypsum, there are obtained simultaneously a sufficient gloss and smoothness as well as a brightness and opacity better than with PCC-kaolin pastes.

REFERENCES:
patent: 5262006 (1993-11-01), Andersson et al.
patent: 5753077 (1998-05-01), Horand et al.
patent: 6248407 (2001-06-01), Hess
patent: 0 216 516 (1987-04-01), None
patent: 0 790 135 (1997-08-01), None
patent: 0 942 099 (1999-09-01), None
patent: 2179956 (1987-03-01), None
patent: WO 8702722 (1987-05-01), None
patent: 9744524 (1997-11-01), None
Derwent's abstract, Nr 1979-30229B, week 7916, Abstract of JP, A, 54030911, (Kuraray Co Ltd), (Mar. 7, 1979).

Affiliated with

Also associated with

Rating

Process and coating composition for coating a paper web does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and coating composition for coating a paper web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and coating composition for coating a paper web will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3454437