Nonwoven wiping material with improved quaternary salt release properties

• US 20050245151A1
• Filed: 06/20/2003
• Published: 11/03/2005
• Est. Priority Date: 06/21/2002
• Status: Abandoned Application

• Current Assignee: Ahlstrom USA Incorporated (Ahlstrom Oyj)
• Original Assignee: Ahistrom Windsor Locks LLC
• Inventors: Cline, Melissa, Annis, Vaughan Richard
• Application Number:
  US10/518,180
• Publication Number:
  US 20050245151A1
• Time in Patent Office: Days
• US Class Current: 442/59
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61Q 17/005 Antimicrobial preparations
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: D04H 1/425 Cellulose series
• CPC Class Codes: D04H 1/43828 sheath-core
• CPC Class Codes: D04H 1/43835 Mixed fibres, e.g. at least two chemically different fibres or fibre blends
• CPC Class Codes: D04H 1/49 entanglement by fluid jet in combination with another consolidation means
• CPC Class Codes: D06M 13/463 derived from monoamines
• CPC Class Codes: D06M 15/423 Amino-aldehyde resins
• CPC Class Codes: D06M 15/55 Epoxy resins
• CPC Class Codes: D06M 15/59 Polyamides; Polyimides
• CPC Class Codes: D06M 16/00 Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
• CPC Class Codes: D21H 13/14 Polyalkenes, e.g. polystyrene polyethylene
• CPC Class Codes: D21H 13/24 Polyesters
• CPC Class Codes: D21H 17/54 obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
• CPC Class Codes: D21H 17/55 Polyamides; Polyaminoamides; Polyester-amides
• CPC Class Codes: Y10T 442/20 Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
• CPC Class Codes: Y10T 442/2311 Coating or impregnation is a lubricant or a surface friction reducing agent other than specified as improving the "hand" of the fabric or increasing the softness thereof
• CPC Class Codes: Y10T 442/2525 Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
• CPC Class Codes: Y10T 442/60 Nonwoven fabric [i.e., nonwoven strand or fiber material]

Abstract

Fibrous webs that retain less of cationic lotion components are obtained by treating the fibers of the web with a solution of a chemical blocking material prior to soaking the web with a chemical lotion containing the cationic lotion component. The chemical blocking material can comprise at least one of a polyamide-epichlorohydrin resin; a polyamide resin; a melamine resin; or a high molecular weight cationic chemical compound. The resultant web material is suited for use in the manufacture of wet wipes and especially disinfectant wet wipes.

Claims

1. A method for increasing release of a cationic lotion component from a wet wipe, comprising the steps of forming a single ply web material comprising cellulosic fibers;

treating the fibers of the web material with a solution of a chemical blocking material to provide in the web material about 2.1% to about 5% (by dry weight of cellulosic fibers) of the chemical blocking material; and

treating the web material with a chemical lotion containing the cationic lotion component after the step of treating the fibers.

2. The method of claim 1 wherein the solution of chemical blocking material is applied to the fibers after the web material is formed.

3. The method of claim 1 wherein the solution of chemical blocking material is applied to the fibers before the web material is formed.

4. The method of claim 1, wherein the web material comprises about 20% to about 100% cellulose.

5. The method of claim 1, wherein the chemical blocking material comprises a polyamide-epichlorohydrin resin;

a polyamide resin;

a melamine resin;

a high molecular weight cationic chemical material or combinations thereof.

6. The method of claim 1, wherein the chemical blocking material comprises about 2.1% to about 2.5% (by dry weight of cellulose fibers) in the nonwoven sheet.

7. The method of claim 1, wherein the web material comprises a wet laid, air laid or carded portion.

8. The method of claim 1, wherein the step of forming the web material comprises air laying the cellulosic fibers;

and the step of treating the fibers comprises adding the chemical blocking material to the web material using a size press or a spray application, wherein the chemical blocking material comprises at least one of a polyamide-epichlorohydrin resin;

a polyamide resin;

a melamine resin;

or a high molecular weight cationic chemical compound.

9. The method of claim 1, wherein the step of forming the web material comprises carding the cellulosic fibers;

and the step of treating the fibers comprises adding the chemical blocking material to the web material using a size press or a spray application, wherein the chemical blocking material comprises at least one of a polyamide-epichlorohydrin resin;

a polyamide resin;

a melamine resin;

or a high molecular weight cationic chemical compound.

10. The method of claim 1, wherein the step of forming the web material comprises preparing a furnish of the cellulosic fibers in a fluid and wet laying the furnish over a forming surface;

and the step of treating the fibers comprises adding the chemical blocking material to at least one of the furnish or the formed web material, wherein the chemical blocking material comprises at least one of a polyamide-epichlorohydrin resin;

a polyamide resin;

a melamine resin;

or a high molecular weight cationic chemical compound.

11. The method of claim 1, wherein the web material further comprises at least one of synthetic material or bicomponent fibers.

12. A method of decreasing cationic lotion component binding to cellulose material in a wet wipe sheet, comprising:

preparing a furnish comprising cellulose material in a fluid;

wet laying the furnish over a forming surface to form a mat; and

drying the mat to form a single ply sheet;

adding about 2.1% to about 5% (by weight of cellulose material) of a chemical blocking material to at least one of the furnish, the mat or the sheet; and

soaking the sheet with a chemical lotion including the cationic lotion component after the step of adding the chemical blocking material to form a wipe;

wherein the wipe comprising about 2.1% to about 5% of chemical blocking material retains about 10% less of cationic lotion component as compared to a wipe comprised of similar materials without the chemical blocking material.

13. The method of claim 12 wherein the furnish further comprises at least one of synthetic material or bicomponent fibers.

14. The method of claim 12 wherein the chemical blocking material comprises at least one of a polyamide-epichlorohydrin resin;

a polyamide resin;

a melamine resin;

or a high molecular weight cationic chemical compound.

15. The method of claim 12 wherein the chemical blocking material consists essentially of a polyamide-epichlorohydrin resin.

16. The method of claim 12, comprising the step of hydroentangling the mat prior to the step of drying.

17. A disinfectant wet wipe, comprising a single ply nonwoven fibrous sheet comprising about 20% to about 100% cellulose material;

about 2.1% to about 5% (by dry weight of cellulose material) of a chemical blocking material; and

a chemical lotion comprising a disinfectant material including at least one of dimethyl benzyl ammonium chloride or dimethyl ethylbenzyl ammonium chloride;

wherein the chemical blocking material lessens retention of the disinfectant material to the nonwoven sheet.

18. The wet wipe of claim 17 wherein the chemical blocking material is a polyamide-epichlorohydrin resin.

19. The disinfectant wet wipe of claim 17 comprising about 2.1% to about 2.5% (by dry weight of cellulose material) of the chemical blocking material.