Method of making surface coated or impregnated paper or paperboa

Details Method of making surface coated or impregnated paper or paperboa Method of making surface coated or impregnated paper or paperboa

1996-06-07

1998-05-19

Czaja, Donald E.

Paper making and fiber liberation

Processes and products

With coating after drying

162184, 162163, 427211, D21H 1940, D21H 1952, B05D 128

Patent

active

057530785

ABSTRACT:
A method for making a surface coated or impregnated paper or paperboard by applying an aqueous additive dispersion to the wet web between the press and drying sections of a conventional paper or paperboard making machine. The aqueous additive dispersion is pre-metered onto a transfer roll and is applied to the wet web at a pressure nip between the transfer roll and a back-up roll. High solids content dispersions can be applied at high web speeds without tearing the web. The use of a high solids content aqueous dispersion having a solids content substantially equal to the solids content of the wet web at the point of application permits the method to be performed without increasing the drying load and therefore at an unreduced speed. The method contemplates the use of a hydrophillic transfer roll running in a direction opposite to the web, permitting a saturant to be impregnated into the web, and has particular application to the production of containerboard treated with a lignosulfonate saturant to improve strength and surface character.

REFERENCES:
patent: 2378113 (1945-06-01), Van De Carr, Jr.
patent: 4339481 (1982-07-01), Beekhuis
patent: 4503802 (1985-03-01), Keller et al.
patent: 5338404 (1994-08-01), Lucas et al.
patent: 5567277 (1996-10-01), Elliot et al.

Affiliated with

Also associated with

Rating

Method of making surface coated or impregnated paper or paperboa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making surface coated or impregnated paper or paperboa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making surface coated or impregnated paper or paperboa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1849417