Laundry detergent sheet comprising lines of frangibility

Patent metadata

Field	Value
Publication number	US-10752869-B2
Application number	US-201815888122-A
Country	US
Kind code	B2
Filing date	Feb 5, 2018
Priority date	Feb 6, 2017
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

A non-fibrous laundry detergent sheet includes at least one line of frangibility for separating the sheet into smaller sections with different sizes.

First claim

What is claimed is:

1. A non-fibrous laundry detergent sheet comprising a perimeter, the non-fibrous laundry detergent sheet further comprising at least one surfactant and at least one film former, wherein the laundry detergent sheet is completely or substantially water-soluble, wherein the laundry detergent sheet has a thickness ranging from 0.1 mm to 10 mm, a length to thickness aspect ratio of at least 5:1, and a width-to-thickness aspect ratio of at least 5:1, wherein the laundry detergent sheet comprises at least a first section and a second section separated by at least one line of frangibility, wherein the first section and the second section have different sizes, wherein the at least one line of frangibility has a first end and a second end, and wherein the at least one line of frangibility contacts the perimeter on at least one of the first end or the second end.

2. The non-fibrous laundry detergent sheet according to claim 1 , wherein the laundry detergent sheet further comprises a third section separated from the first and second sections by addition line(s) of frangibility, wherein the third section has a different size from both the first section and the second section.

3. The non-fibrous laundry detergent sheet according to claim 1 , wherein the laundry detergent sheet further comprises a third section separated from the first and second sections by additional line(s) of frangibility, wherein the third section has a size, wherein the size of the third section is the same size as either the first section or the second section.

4. The non-fibrous laundry detergent sheet according to claim 1 , wherein the first and second sections are marked by different size indicators, different artworks, or different colors, wherein said different size indicators designate different laundry detergent doses.

5. The non-fibrous laundry detergent sheet according to claim 1 , wherein the first and second sections contain different surfactants and/or different adjunct detergent ingredients.

6. The non-fibrous laundry detergent sheet according to claim 1 , wherein said line(s) of frangibility are formed by indentation or perforation.

7. The non-fibrous laundry detergent sheet according to claim 1 , wherein the first section has a shape adapted for pre-treating a shirt collar and the second section has a shape adapted for pre-treating a shirt cuff.

8. The non-fibrous laundry detergent sheet according to claim 1 , wherein either the first section or the second section is completely delineated by said line(s) of frangibility.

9. The non-fibrous laundry detergent sheet according to claim 1 , wherein the at least one line of frangibility at least partially defines a periphery for each of the first section and the second section, wherein the first section has a periphery comprises at least one protrusion, and the second section has a periphery comprising at least one intrusion, such that the at least one protrusion of the first section and the at least one intrusion of the second section are fitted each other so that the first section and the second section form the laundry detergent sheet like a jigsaw puzzle.

10. The non-fibrous laundry detergent sheet according to claim 1 , wherein the laundry detergent sheet is elongated with a longitudinal direction and is wound into a roll along said longitudinal direction.

11. The non-fibrous laundry detergent sheet according to claim 1 , wherein said at least one surfactant is present in an amount ranging from 5% to 90% by total weight of such non-fibrous laundry detergent sheet; wherein said at least one surfactant comprises one or more anionic surfactants selected from the group consisting of C 6 -C 20 linear alkylbenzene sulfonates (LAS), C 6 -C 20 linear or branched alkyl sulfates (AS), C 6 -C 20 linear or branched alkylalkoxy sulfates (AAS) having a weight average degree of alkoxylation ranging from 0.1 to 10, and combinations thereof.

12. The non-fibrous laundry detergent sheet according to claim 1 , wherein said at least one surfactant comprises: (1) one or more C 6 -C 18 linear or branched AS surfactants as a main surfactant(s); and (2) one or more C 6 -C 20 LAS and/or C 6 -C 20 linear or branched AAS as a co-surfactant(s), wherein said main surfactant(s) are present in an amount that is greater than 50% by total weight of all surfactants in said sheet, and wherein said one or more C 6 -C 18 linear or branched AS surfactants are C 12 -C 14 linear or branched AS surfactants.

13. The non-fibrous laundry detergent sheet according to claim 1 , wherein said at least one surfactant comprises: (1) one or more C 6 -C 20 LAS surfactants as a main surfactant(s); and (2) one or more C 6 -C 18 linear or branched AS and/or C 6 -C 20 linear or branched AAS as a co-surfactant(s), wherein said main surfactant(s) are present in an amount that is greater than 50% by total weight of all surfactants in said sheet.

14. The non-fibrous laundry detergent sheet according to claim 1 , wherein said at least one film former is present in an amount ranging from 1% to 70% by total weight of such non-fibrous laundry detergent sheet; wherein said at least one film former comprises one or more water-soluble polymers; wherein said one or more water-soluble polymers are selected from the group consisting of polyalkylene glycols, polyvinyl alcohols, starch or modified starch, cellulose or modified cellulose, polyacrylates, polymethacrylates, polyacrylamides, polyvinylpyrrolidones, and combinations thereof.

15. A non-fibrous laundry detergent sheet, comprising at least one surfactant and at least one film former, wherein the laundry detergent sheet is completely or substantially water-soluble, and has a thickness ranging from 0.1 mm to 10 mm; wherein the laundry detergent sheet is elongated with a longitudinal direction and is wound into a roll along said longitudinal direction; wherein the laundry detergent sheet comprises a line of frangibility so that the laundry detergent sheet can be separated into two or more sub-sheets by said line of frangibility.

Assignees

• Procter & Gamble

Inventors

• Tan Hong Sing
• Tang Ming
• Sivik Mark Robert
• Denome Frank William

Classifications

• C11D17/06

  Powder; Flakes; Free-flowing mixtures; Sheets · CPC title

• C11D17/044 Primary

  Solid compositions · CPC title

• C11D3/3753

  Polyvinylalcohol; Ethers or esters thereof · CPC title

• C11D3/3707

  Polyethers, e.g. polyalkyleneoxides · CPC title

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title