WO1998010725B1 - A compostable disposable absorbing product, a method and an intermediate product for production thereof - Google Patents
A compostable disposable absorbing product, a method and an intermediate product for production thereofInfo
- Publication number
- WO1998010725B1 WO1998010725B1 PCT/FI1997/000537 FI9700537W WO9810725B1 WO 1998010725 B1 WO1998010725 B1 WO 1998010725B1 FI 9700537 W FI9700537 W FI 9700537W WO 9810725 B1 WO9810725 B1 WO 9810725B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- pulp
- surface layer
- produced
- compostable
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract 9
- 239000002344 surface layer Substances 0.000 claims abstract 25
- 239000012530 fluid Substances 0.000 claims abstract 18
- 239000010410 layer Substances 0.000 claims abstract 17
- 239000003415 peat Substances 0.000 claims abstract 9
- 239000011358 absorbing material Substances 0.000 claims abstract 6
- 238000009264 composting Methods 0.000 claims abstract 5
- 239000000463 material Substances 0.000 claims abstract 5
- 239000001913 cellulose Substances 0.000 claims 8
- 229920002678 cellulose Polymers 0.000 claims 8
- 235000010980 cellulose Nutrition 0.000 claims 8
- 238000000855 fermentation Methods 0.000 claims 6
- 230000004151 fermentation Effects 0.000 claims 6
- 239000004745 nonwoven fabric Substances 0.000 claims 5
- 239000000203 mixture Substances 0.000 claims 4
- 229920000903 Polyhydroxyalkanoate Polymers 0.000 claims 3
- 239000002253 acid Substances 0.000 claims 3
- 229920003232 aliphatic polyester Polymers 0.000 claims 3
- 230000001580 bacterial Effects 0.000 claims 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims 3
- 238000000354 decomposition reaction Methods 0.000 claims 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims 3
- 235000014655 lactic acid Nutrition 0.000 claims 3
- 239000004310 lactic acid Substances 0.000 claims 3
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 claims 3
- 229920000747 poly(lactic acid) polymer Polymers 0.000 claims 3
- 229920000642 polymer Polymers 0.000 claims 3
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 3
- 239000002023 wood Substances 0.000 claims 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims 2
- 229940105329 Carboxymethylcellulose Drugs 0.000 claims 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 238000010297 mechanical methods and process Methods 0.000 claims 2
- 239000004628 starch-based polymer Substances 0.000 claims 2
- 229920003179 starch-based polymer Polymers 0.000 claims 2
- 229960003563 Calcium Carbonate Drugs 0.000 claims 1
- 229940106135 Cellulose Drugs 0.000 claims 1
- 239000004698 Polyethylene (PE) Substances 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- 229920000297 Rayon Polymers 0.000 claims 1
- 239000011230 binding agent Substances 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- 238000009472 formulation Methods 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 229920002451 polyvinyl alcohol Polymers 0.000 claims 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims 1
- FYGDTMLNYKFZSV-CSHPIKHBSA-N β-cellotriose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](O)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O FYGDTMLNYKFZSV-CSHPIKHBSA-N 0.000 claims 1
Abstract
This invention relates to a composting disposable absorbing product having a fluid well-permeable inner surface layer (1), a potentially fluid-impermeable outer surface layer (7) and a fluid absorbing, distributing and binding intermediate layer between the above-mentioned surface layers, which intermediate layer can consist of one or more layers (2, 3, 4, 5), wherein the intermediate layer contains poorly decomposed bog peat, fluff pulp and as necessary one or more other compostable fluid absorbing materials, and the surface layers are made of compostable materials, and a method and an intermediate product for production of this kind of an absorbing product.
Claims
1. A compostable disposable absorbing product that has a fluid well-permeable inner surface layer (1) and a potentially fluid impermeable outer surface layer (7) , which sur- face layers are made of compostable materials, and a fluid absorbing, distributing and binding intermediate layer inserted between the above mentioned surface layers, which intermediate layer can consist of one or more layers (2, 3, 4, 5), characterised in that the intermediate layer contains poorly decomposed bog peat, fluff pulp and optionally one or more compostable fluid absorbing materials, wherein the intermediate layer contains poorly decomposed bog peat having a degree of decomposition of HI to H5 and preferably HI to H3 and the length of fibres thereof is at most 12 mm, usually 1 to 8 mm and suitably at least 2 mm, and fluff pulp, chemi- mechanical fluff pulp or bleached sulphate cellulose fluff pulp preferably produced from coniferous wood, wherein the weight ratio between bog peat and fluff pulp is 20:80 to 80:20 and preferably 30:70 to 50:50.
2. A product according to claim 1, characterised in that the intermediate layer contains other compostable fluid absorbing materials together at most 80 % by weight, preferably 15 to 45 % by weight and most preferably 20 to 30 % by weight based on the weight of the intermediate layer, wherein the above mentioned other absorbing material is preferably starch based polymer or carboxy methyl cellulose based product or a combination thereof.
3. A product according to claim 1 or 2 , characterised in that the fluid well-permeable inner surface layer (1) is compostable nonwoven fabric, bonded by hydroentangling, or a viscose fiber nonwoven where superhydrolysed polyvinylalcohol or hydroxypropyle cellulose has been used as a binder.
4. A product according to claim 1 or 2 , characterised in that the fluid well -permeable inner surface layer (1) is compostable nonwoven fabric which is made of a composting polymer that is obtained from one or more carboxyl acid pref- erably obtained by a fermentation method wherein the nonwoven fabric is preferably produced from polylactide obtained by polymerising lactic acid obtained by bacterial fermentation, or from polyhydroxy alkanoate or aliphatic polyester produced biotechnologically .
5. A product according to any of claims 1 to 4 , characterised in that the outer surface layer (7) is formed from a substantially fluid impermeable film made of a polymer that has been obtained from one or more, preferably by a fermentation method produced carboxyl acid wherein the said outer surface layer is made of polylactide obtained from lactic acid produced by bacterial fermentation, or from polyhydroxy alkanoate or aliphatic polyester produced biotechnologically.
6. A product according to any of claims 1 to 4 , characterised in that the outer surface layer (7) is formed from a substantially fluid impermeable coated nonwoven fabric or paper whose coating is made of a polymer that has been obtained from one or more, preferably by fermentation method produced carboxyl acid wherein the said coating is made of polylactide obtained from lactic acid produced by bacterial fermentation, or from polyhydroxy alkanoate or aliphatic polyester produced biotechnologically.
7. A product according to any of claims 1 to 4 , characterised in that the outer surface layer (7) is formed from a substantially fluid impermeable film that is a viscose cellu- lose or polyethylene film to which calcium carbonate has been added during the production.
8. A product according to any of claims 1 to 4 , characterised in that the outer surface layer (7) is a fluid-permeable compostable nonwoven fabric defined in the claim 3 or 4.
9. A method for production of a compostable disposable absorbing product having a fluid well -permeable inner surface layer (1) and a fluid potentially impermeable outer surface layer (7) , which surface layers are made of composting materials, and inserted between the above mentioned surface layers a fluid absorbing, distributing and binding intermediate layer that can consist of one or more layers (2, 3, 4, 5), characterised in that a) to a wet pulp produced in the production of cellulose, preferably to a wet pulp produced from coniferous wood either via a chemi-mechanical method or a method for produc- tion of bleached sulphate cellulose, is added poorly decomposed bog peat having a degree of decomposition of HI to H5 and preferably HI to H3 and having moisture concentration typically 45 to 55 % and the length of fibres thereof is at most 12 mm, usually 1 to 8 mm and suitably at least 2 mm in such a manner that the weight ratio between bog peat and pulp is 20:80 to 80:20 and preferably 30:70 to 50:50, b) mixture pulp obtained in step a) is dried into reel pulp which then is defibrated in a manner known per se into fluff, c) to the obtained fluff is optionally added with conventional feeding apparatuses one or more other compostable fluid absorbing materials, preferably a starch based polymer or carboxy methyl cellulose based formulation or a combination thereof in such a manner that fluff has at most 80 % by weight, preferably 15 to 45 % by weight and most preferably 20 to 30 % by weight other absorbing materials in question, d) from grain obtained in step c) is produced with a conventional apparatus for production of absorbing product, one or more layers (2, 3, 4, 5) consisting of an intermediate layer blank, which is optionally lead as a discontinuous web into a web forming the other of surface layers (1, 7) of the absorbing product, e) the web obtained in step d) is coated with the absent surface layer (1, 7) , and f) the surface layers (1, 7) are attached to each others and as necessary to the intermediate layer blank of the absorbing product in such a manner that the intermediate layer blank remains inside the surface layers, wherein at least one of the surface layers (1, 7) comprises of a fluid-permeable composting material defined in claim 3 or 4 and optionally the other surface layer (1, 7) is substantially fluid impermeable composting material defined in any one of the claims 5 to 7.
10. Reel pulp characterised in that it contains poorly decomposed bog peat and cellulose an that it has been pro- duced in such a manner that a) to the wet pulp produced in the production of cellulose, preferably to wet pulp obtained from coniferous wood either by a chemi-mechanical method of by a method for production of bleached sulphate cellulose has been added poorly decomposed bog peat having the degree of decomposition of HI to H5 and preferably HI to H3 and having the moisture content typically of 45 to 55 % and the length of fibres are at most 12 mm, usually 1 to 8 mm and suitably at least 2 mm in such a manner that the weight ratio between the bog peat and pulp is 20:80 to 80:20 and preferably 30:70 to 50:50, and b) mixed pulp obtained in step a) is dried into reel pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97919064A EP0879042A1 (en) | 1996-09-10 | 1997-09-09 | A compostable disposable absorbing product, a method and an intermediate product for production thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI963565A FI100852B (en) | 1996-09-10 | 1996-09-10 | Compostable disposable absorbent product and process and intermediate product for its preparation |
| FI963565 | 1996-09-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1998010725A1 WO1998010725A1 (en) | 1998-03-19 |
| WO1998010725B1 true WO1998010725B1 (en) | 1998-06-18 |
Family
ID=8546631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FI1997/000537 WO1998010725A1 (en) | 1996-09-10 | 1997-09-09 | A compostable disposable absorbing product, a method and an intermediate product for production thereof |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0879042A1 (en) |
| FI (1) | FI100852B (en) |
| WO (1) | WO1998010725A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE521501C2 (en) * | 1998-03-16 | 2003-11-04 | Sca Hygiene Prod Ab | Absorbent structure with starch-based superabsorbent prepared via radical copolymerization |
| SE512446C2 (en) * | 1998-10-01 | 2000-03-20 | Carpeting I Stockholm Ab | Mop |
| WO2003096947A1 (en) * | 2002-05-17 | 2003-11-27 | Flores Gonzales Estela Concepc | Biodegradable, environmentally-friendly hygiene absorbent |
| WO2009036483A1 (en) * | 2007-09-19 | 2009-03-26 | Senevens International Ltd | Non-woven biodegradable hygiene product |
| EP3158982B1 (en) | 2015-10-25 | 2019-06-12 | ZERI Europe - Foundation for a Blue Economy vzw | Compostable diaper, method of manufacturing the same, method of creating active humus using the same |
| US10736790B2 (en) * | 2016-11-22 | 2020-08-11 | Saathi, Inc. | Absorbent article having natural fibers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4618496A (en) * | 1984-07-16 | 1986-10-21 | Johnson & Johnson | Antimicrobial peat moss composition |
| US4676871A (en) * | 1985-08-29 | 1987-06-30 | Johnson & Johnson | Air laid peat moss board |
| US5374260A (en) * | 1989-08-04 | 1994-12-20 | Johnson & Johnson Inc. | Unitized sanitary napkin |
| US5171308A (en) * | 1990-05-11 | 1992-12-15 | E. I. Du Pont De Nemours And Company | Polyesters and their use in compostable products such as disposable diapers |
| CA2088000A1 (en) * | 1992-09-22 | 1994-03-23 | Kimberly-Clark Worldwide, Inc. | Compostable disposable personal care articles |
-
1996
- 1996-09-10 FI FI963565A patent/FI100852B/en not_active IP Right Cessation
-
1997
- 1997-09-09 EP EP97919064A patent/EP0879042A1/en not_active Withdrawn
- 1997-09-09 WO PCT/FI1997/000537 patent/WO1998010725A1/en not_active Application Discontinuation
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