SHEET-LIKE WATER-DISINTEGRATABLE CLEANER

• US 20090165235A1
• Filed: 01/10/2007
• Published: 07/02/2009
• Est. Priority Date: 01/16/2006
• Status: Abandoned Application

• Current Assignee: Kinsei Seishi Co., Ltd.
• Original Assignee: Kinsei Seishi Co., Ltd.
• Inventors: Matsumoto, Akira, Yamazaki, Yasuyuki, Yasumitsu, Yasuji, Chikamori, Kazuyuki
• Application Number:
  US12/160,177
• Publication Number:
  US 20090165235A1
• Time in Patent Office: Days
• US Class Current: 15/209.100
• CPC Class Codes: B32B 29/02 next to a fibrous or filamentary layer
• CPC Class Codes: C11D 17/042 Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
• CPC Class Codes: D04H 1/425 Cellulose series
• CPC Class Codes: D04H 1/587 characterised by the bonding agents used
• CPC Class Codes: D04H 1/64 the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
• CPC Class Codes: D21H 27/002 Tissue paper; Absorbent paper D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00
• CPC Class Codes: D21H 27/42 comprising dry-laid paper

Abstract

There is provided a water-disintegratable cleaner which is light in weight because of its being free from water, does not require a fungicide or a bactericide because of no risk of mold, is excellent in cleaning performance, compared to conventional wet disintegratable cleaners, and can be flushed down a toilet or the like.

A sheet-like water-disintegratable cleaner having a total basis weight of 10 to 250 g/m² in which a web layer (ii) having a basis weight of 5 to 200 g/m² produced by an air-laid process, which comprises 100 to 5% by weight of a powdery organic acid (a) having a hydroxyl group and a melting point of 70 to 160° C. and 0 to 95% by weight of cellulosic pulp (b) (with the proviso that (a)+(b)=100% by weight) as main components, is laminated on water-disintegratable paper (i) having a basis weight of 5 to 25 g/m² comprising cellulosic pulp as a main component, and the same water-disintegratable paper (iii) as the above (i) is further laminated on the web layer (ii) as needed. A binder component (c) may be further incorporated in the web layer (ii).

Claims

1. A sheet-like water-disintegratable cleaner having a total basis weight of 10 to 250 g/m² in which a web layer (ii) having a basis weight of 5 to 200 g/m² produced by an air-laid process, which comprises 100 to 5% by weight of a powdery organic acid (a) having a hydroxyl group and a melting point of 70 to 160°

C. and 0 to 95% by weight of cellulosic pulp (b) (with the proviso that (a)+(b)=100% by weight) as main components, is laminated on water-disintegratable paper (i) having a basis weight of 5 to 25 g/m² comprising cellulosic pulp as a main component, and the same water-disintegratable paper (iii) as the above (i) is further laminated on the web layer (ii), followed by hot pressing calendering treatment.

2. The sheet-like water-disintegratable cleaner according to claim 1, wherein the organic acid (a) has an average particle size of 0.1 to 1 mm.

3. The sheet-like water-disintegratable cleaner according to claim 1, wherein the organic acid (a) is at least one selected from the group consisting of malic acid, citric acid, tartaric acid, gluconolactone and a salt thereof.

4. The sheet-like water-disintegratable cleaner according to claim 1, wherein the organic acid (a) has a basis weight of 1 to 50 g/m².

5. The sheet-like water-disintegratable cleaner according to claim 1, wherein the web layer (ii) further contains at least one binder component (c) selected from the group consisting of the heat-adhesive synthetic fiber, polyolefinic pulp, a powder of a low-melting resin and a water-soluble resin, and the component (a) is from 5 to 50% by weight, the component (b) is from 40 to 94% by weight and the component (c) is from 1 to 10% by weight (with the proviso that (a)+(b)+(c)=100% by weight).

6. The sheet-like water-disintegratable cleaner according to claim 5, wherein the powder of the low-melting resin constituting the component (c) is at least one selected from the group consisting of polyethylene, polypropylene, a polyvinyl chloride-based resin, polyvinyl acetate, an acrylic acid ester-based resin, an ethylene-vinyl acetate copolymer, a low-melting polyester, a low-melting polyamide and an ionomer resin.

7. The sheet-like water-disintegratable cleaner according to claim 6, wherein the water-soluble resin constituting the component (c) is at least one selected from the group consisting of polyvinyl alcohol, carboxymethylcellulose and a water-soluble derivative thereof, a water-soluble size and starch.

8. The sheet-like water-disintegratable cleaner according to claim 1, wherein when used as a cleaner, the sheet-like water-disintegratable cleaner is wetted with water to use.

9. The sheet-like water-disintegratable cleaner according to claim 2, wherein the organic acid (a) is at least one selected from the group consisting of malic acid, citric acid, tartaric acid, gluconolactone and a salt thereof.

10. The sheet-like water-disintegratable cleaner according to claim 2, wherein the organic acid (a) has a basis weight of 1 to 50 g/m².

11. The sheet-like water-disintegratable cleaner according to claim 3, wherein the organic acid (a) has a basis weight of 1 to 50 g/m².

12. The sheet-like water-disintegratable cleaner according to claim 9, wherein the organic acid (a) has a basis weight of 1 to 50 g/m².

13. The sheet-like water-disintegratable cleaner according to claim 2, wherein the web layer (ii) further contains at least one binder component (c) selected from the group consisting of the heat-adhesive synthetic fiber, polyolefinic pulp, a powder of a low-melting resin and a water-soluble resin, and the component (a) is from 5 to 50% by weight, the component (b) is from 40 to 94% by weight and the component (c) is from 1 to 10% by weight (with the proviso that (a)+(b)+(c)=100% by weight).

14. The sheet-like water-disintegratable cleaner according to claim 3, wherein the web layer (ii) further contains at least one binder component (c) selected from the group consisting of the heat-adhesive synthetic fiber, polyolefinic pulp, a powder of a low-melting resin and a water-soluble resin, and the component (a) is from 5 to 50% by weight, the component (b) is from 40 to 94% by weight and the component (c) is from 1 to 10% by weight (with the proviso that (a)+(b)+(c)=100% by weight).

15. The sheet-like water-disintegratable cleaner according to claim 4, wherein the web layer (ii) further contains at least one binder component (c) selected from the group consisting of the heat-adhesive synthetic fiber, polyolefinic pulp, a powder of a low-melting resin and a water-soluble resin, and the component (a) is from 5 to 50% by weight, the component (b) is from 40 to 94% by weight and the component (c) is from 1 to 10% by weight (with the proviso that (a)+(b)+(c)=100% by weight).

16. The sheet-like water-disintegratable cleaner according to claim 2, wherein when used as a cleaner, the sheet-like water-disintegratable cleaner is wetted with water to use.

17. The sheet-like water-disintegratable cleaner according to claim 3, wherein when used as a cleaner, the sheet-like water-disintegratable cleaner is wetted with water to use.

18. The sheet-like water-disintegratable cleaner according to claim 4, wherein when used as a cleaner, the sheet-like water-disintegratable cleaner is wetted with water to use.

19. The sheet-like water-disintegratable cleaner according to claim 5, wherein when used as a cleaner, the sheet-like water-disintegratable cleaner is wetted with water to use.

20. The sheet-like water-disintegratable cleaner according to claim 6, wherein when used as a cleaner, the sheet-like water-disintegratable cleaner is wetted with water to use.