Corrosion-resistant ply bond adhesives and products and processes incorporating such adhesives

A multiple ply cellulosic fibrous laminate structure comprising:

• (a) a first ply of a cellulosic fibrous material having a first and second surface;
• (b) a second ply of a cellulosic fibrous material having a first and second surface wherein the first surface of the second ply is adhered to the first surface of the first ply;
• (c) an adhesive composition comprising (i) a polyvinyl alcohol polymer with a degree of polymerization of about 300 to about 4,000 and being about 88.0 mole % to about 99.9 mole % hydrolyzed;
• and (ii) a corrosion inhibitor compound;
• and
• (d) wherein the adhesive composition is disposed between the first and second ply.

A method of producing a multiple ply cellulosic fibrous laminate comprising:

• (a) applying an adhesive composition comprising an aqueous solution of (i) a polyvinyl alcohol polymer with a degree of polymerization of about 300 to about 4,000 and being about 88.0 mole % to about 99.9 mole % hydrolyzed;
• and (ii) a corrosion inhibitor compound to a first ply of a cellulosic fibrous material having a first and second surface to form a coating of the adhesive on the first surface of the first ply of cellulosic fibrous material;
• and
• (b) contacting the first surface of the first ply of cellulosic fibrous material to a second ply of a cellulosic fibrous material having a first and second surface to adhere the first surface of the first ply of cellulosic fibrous material to the first surface of the second ply of cellulosic fibrous material.