Crosslinkable creping adhesive formulations
AssigneeFort James Corporation
InventorsPhuong Van Luu, Cristian M. Neculescu, Dawn M. Mews
Life of this patent
Estimating the term…
Abstract
A method for producing absorbent creped cellulosic sheets is disclosed. The process is carried out by applying zirconium crosslinking agent directly and separately on the Yankee dryer at the time the base polymer is applied to the surface. These creped sheets are useful in the manufacture of tissue and towel.
Claims39
A method of creping a fibrous web that comprises providing to the interface of a fibrous web and a Yankee dryer a crosslinked creping adhesive comprising:
- a) an adhesive composition comprising organic polymers having in the polymer backbone amine groups selected from the group consisting of primary and secondary amines or mixtures of primary and secondary amines and a crosslinking agent for crosslinking the polymer to the fibrous web at the drying surface of the Yankee said agent being a zirconium compound having a valence of plus four wherein the crosslinking agent is added directly on the Yankee with the copolymer without prior mixing with the copolymer,
- b) in an amount sufficient to promote improvement in adhesion, removing said fibrous web from said Yankee dryer by creping it off with a creping blade.
A method of creping a fibrous web that comprises providing to the interface of a fibrous web and Yankee dryer crosslinked creping adhesive comprising:
- a) an adhesive composition comprising polyvinyl alcohol-vinyl amine copolymer of the following structure:
- wherein m and n have values of about 1 to 99 and about 99 to 1 respectively, and a crosslinking agent for crosslinking the copolymer to the fibrous web at the drying surface of the Yankee said crosslinking agent being a zirconium compound having a valence of plus four that can be crosslinked with cellulosic paper products, wherein the crosslinking agent is added directly on the Yankee with the copolymer without prior mixing with the copolymer,
- b) in an amount sufficient to promote improvement in adhesion, removing said fibrous web from said Yankee dryer by creping it off with a creping blade.
A method of creping a fibrous web to recover a tissue that comprises providing to the interface of a fibrous web and a Yankee dryer a crosslinked creping adhesive comprising:
- a) an adhesive composition comprising organic polymers having in the polymer backbone amine groups selected from the group consisting of primary and secondary amines or mixtures of primary and secondary amines and a crosslinking agent for crosslinking the polymer to the fibrous web at the drying surface of the Yankee dryer said crosslinking agent being a zirconium crosslinking agent having a valence of plus four that can be crosslinked with cellulosic paper products, wherein the crosslinking agent is added directly on the Yankee with the copolymer without prior mixing with the copolymer,
- b) in an amount sufficient to promote improvement in adhesion, removing said fibrous web from said Yankee dryer by creping it off with a creping blade.
A method of creping fibrous web to recover a tissue that comprises providing to the interface of a fibrous web and Yankee dryer crosslinked creping adhesive comprising:
- a) an adhesive composition comprising polyvinyl alcohol-vinyl amine copolymer of the following structure:
- wherein m and n have values of about 1 to 99 and about 99 to 1 respectively, and a crosslinking agent for crosslinking the copolymer to the fibrous web at the drying surface of the Yankee said crosslinking agent being a zirconium compound having a valence of plus four that can be crosslinked with cellulosic paper products, wherein the crosslinking agent is added directly on the Yankee with the copolymer without prior mixing with the copolymer,
- b) in an amount sufficient to promote improvement in adhesion, removing said fibrous web from said Yankee dryer by creping it off with a creping blade.
Dependencies are inferred from the claim text.