Manufacture of paper and paper board

Details Manufacture of paper and paper board Manufacture of paper and paper board

2008-04-29

2008-04-29

Halpern, Mark (Department: 1791)

Paper making and fiber liberation

Processes and products

Non-fiber additive

C162S181800, C162S181200, C162S181400, C162S181600, C106S483000, C106S491000

Reexamination Certificate

active

07364641

ABSTRACT:
Process for making paper or paper board comprising, forming an aqueous cellulosic suspension, adding a retention system to the cellulosic suspension, draining the suspension on a screen to form a sheet and drying the sheet, wherein the retention system comprises a swelling clay which has a TAPPI brightness of at least 70.

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patent: 01/40577 (2001-06-01), None
H. van Olphen “An Introduction to Clay Colloid Chemistry”, 'Wiley Press, 1977.
“Additives for Consumer Care Products” by Southern Clay Products No Date.

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