WO2017064725A1 - Biodegradable absorbers (eco-pads) - Google Patents
Biodegradable absorbers (eco-pads) Download PDFInfo
- Publication number
- WO2017064725A1 WO2017064725A1 PCT/IN2016/000103 IN2016000103W WO2017064725A1 WO 2017064725 A1 WO2017064725 A1 WO 2017064725A1 IN 2016000103 W IN2016000103 W IN 2016000103W WO 2017064725 A1 WO2017064725 A1 WO 2017064725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- absorber
- biodegradable
- cotton
- top sheet
- Prior art date
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 31
- 229920000742 Cotton Polymers 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 229920001800 Shellac Polymers 0.000 claims abstract description 11
- 239000004208 shellac Substances 0.000 claims abstract description 11
- 229940113147 shellac Drugs 0.000 claims abstract description 11
- 235000013874 shellac Nutrition 0.000 claims abstract description 11
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims abstract description 10
- 239000000017 hydrogel Substances 0.000 claims abstract description 9
- 240000000491 Corchorus aestuans Species 0.000 claims abstract description 8
- 235000011777 Corchorus aestuans Nutrition 0.000 claims abstract description 8
- 235000010862 Corchorus capsularis Nutrition 0.000 claims abstract description 8
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims abstract description 6
- 239000012943 hotmelt Substances 0.000 claims abstract description 6
- 239000002759 woven fabric Substances 0.000 claims abstract description 4
- 230000002745 absorbent Effects 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 13
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000593 degrading effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 3
- 239000010839 body fluid Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 244000150187 Cyperus papyrus Species 0.000 description 1
- 240000003826 Eichhornia crassipes Species 0.000 description 1
- 241000736285 Sphagnum Species 0.000 description 1
- 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 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/01—Non-adhesive bandages or dressings
- A61F13/01021—Non-adhesive bandages or dressings characterised by the structure of the dressing
- A61F13/01029—Non-adhesive bandages or dressings characterised by the structure of the dressing made of multiple layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/01—Non-adhesive bandages or dressings
- A61F13/01008—Non-adhesive bandages or dressings characterised by the material
- A61F13/01012—Non-adhesive bandages or dressings characterised by the material being made of natural material, e.g. cellulose-, protein-, collagen-based
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/01—Non-adhesive bandages or dressings
- A61F13/01008—Non-adhesive bandages or dressings characterised by the material
- A61F13/01017—Non-adhesive bandages or dressings characterised by the material synthetic, e.g. polymer based
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/40—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing ingredients of undetermined constitution or reaction products thereof, e.g. plant or animal extracts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/62—Compostable, hydrosoluble or hydrodegradable materials
Definitions
- the invention relates to the absorbers of a kind comprising layered structure composed of various absorbing and distributing agents in order to absorb body fluids.
- the objective of the present invention is to obtain an absorber for absorption and retention of body fluids which should be used externally , which is completely biodegradable as each layer is biodegradable and has a unique design to enhance the rate of degradation without compromising hygiene, comfort, cost and efficiency.
- Present invention overcomes the above said drawbacks as it contains layers comprised of all bio-degradable materials.
- the suggested new design helps to further increase the degradation rate by separating slowly degrading part from fast degrading part. Materials used for this product are cheaper which helps to reduce the manufacturing cost.
- the stated innovative absorber is use and through type as it is most hygienic way of handling body fluids. Description of the invention
- the invention relates to an absorber of the kind indicated above, characterized in the five different layers each having different composition and function.
- Figure 1 Materials used in biodegradable absorber (Eco-pad).
- numeral 1 represents :top sheet- Shellac coated cotton-jute blend(l), Absorbent layer- compressed cotton(2), Distribution layer- compressed wood pulp (3), superabsorbent layer- hydrogel packed in distribution layer(4) ,Back sheet- tightly woven fabric of cotton and jute blend coated with thin layer shellac(5), hot melt glue(6).
- first layer i.e. top sheet (1) of the absorber is composed of shellac coated cotton and jute blend.
- top sheet (1) of the absorber is composed of shellac coated cotton and jute blend.
- the most effective top sheet is mesh made up of cotton and jute blend coated with thin coat of shellac.
- the top sheet is made with these materials to alter the polyethylene. Mesh made up of cotton and jute blend will give softness and shellac coat will provide dryness.
- the innovative absorber has second layer i.e. absorption layer (2) composed of compressed cotton in order to reduce the thickness of final product in order to increase user compliance.
- absorption layer (2) composed of compressed cotton
- third layer of absorber i.e. distribution layer (3) compressed wood pulp is used for proper distribution of absorbed contents. This even distribution offers even absorption and storage in superabsorbent layer. Said sheet of compressed wood pulp also gives support to the superabsorbent layer.
- the absorber of the invention comprises fourth layer of superabsorbent i.e. storage layer (4).
- storage layer (4) In order to make this layer bio-degradable hydrogels are used.
- Inverted hydrogel of sodium salt of carboxy methyl cellulose cross linked with carbodiimide or any other biodegradable hydrogel can be used in the place of storage layer. This gel is phase inverted to form xerogel and used as superabsorbent by packing it with distribution layer (3).
- the bottom sheet (5) of the innovative absorber i.e. Eco-pad is made up of tightly woven fabric of cotton and jute blend coated with thin layer shellac. This gives support to swollen hydrogel (after absorption) and also provides leakage.
- Top sheet (1) and back sheet (5) are joined together only at edges with hot melt glue to form top sheet and back sheet (b) so that absorbent layers (a) can be inserted in top sheet and back sheet (b) as shown in figure numeral 2.
- the extensions (c and d) are provided to the absorbent layers (a) and top sheet and back sheet (b) as shown in figure numeral 2 so as to separate absorbent layers (a) from top sheet and back sheet (b) after the use and can be disposed off separately so that rate of fast degrading material will not be affected.
- the shape, size, color or any other parameter of said absorber or its cover or paper bag can vary to improve aesthetic appeal of the present innovative absorber.
- the bio-degradable absorber (Eco-pad) of the invention having above indicated characteristics is efficient and reliable in operation and having extremely simple structure with a relatively low cost of production.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Botany (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Zoology (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The absorber is disclosed along with the material and innovative design. Materials used to make these bioabsorbers are biocompatible and completely biodegradable (Shellac coated cotton-jute blend, compressed cotton, compressed wood pulp, hydrogel packed in distribution layer, tightly woven fabric of cotton and jute blend coated with thin layer shellac, hot melt glue). The innovative design helps to enhance the rate of degradation. These materials and design can be used to make any kind of bioabsorber like sanitary napkins, diapers, surgical pads, wound absorbers, etc. The shape, size and quantity of any of the material used are variable depending on the intended use. The stated absorbers (Eco-pads) are efficient and reliable in operation and having extremely simple structure with a relatively low cost of production.
Description
Title: BIODEGRADABLE ABSORBERS (ECO-PADS)
Description Objective
[0001] The invention relates to the absorbers of a kind comprising layered structure composed of various absorbing and distributing agents in order to absorb body fluids.
[0002] The objective of the present invention is to obtain an absorber for absorption and retention of body fluids which should be used externally , which is completely biodegradable as each layer is biodegradable and has a unique design to enhance the rate of degradation without compromising hygiene, comfort, cost and efficiency.
Background of the invention
[0003] Many products are available in market having the same kind of objective but with different construction materials and design and hence with various disadvantages such as reusable products have problem with collection and sterilization, products containing natural fibers like sphagnum, water hyacinth, papyrus etc. have many problems like availability of materials, low water retention capacity, low absorptive index. None of the available strategies or materials gave efficiency comparable to conventional polyethylene absorbers.
[0004] Present invention overcomes the above said drawbacks as it contains layers comprised of all bio-degradable materials. In said invention the suggested new design helps to further increase the degradation rate by separating slowly degrading part from fast degrading part. Materials used for this product are cheaper which helps to reduce the manufacturing cost. The stated innovative absorber is use and through type as it is most hygienic way of handling body fluids.
Description of the invention
[0005] In view of achieving these and further preferred objects the invention relates to an absorber of the kind indicated above, characterized in the five different layers each having different composition and function.
[0006] The idea constituting the basis of the present invention is fundamentally to design an absorber having efficiency similar to conventional polyethylene absorbers and complete biodegradability in landfill.
[0007] the characteristics of the invention shall become apparent from the accompanying drawings:
1. Figure 1 : Materials used in biodegradable absorber (Eco-pad).
2. Figure 2: Innovative design of biodegradable absorber (Eco-pad) and suggested way of its disposal.
With reference to the drawings numeral 1 represents :top sheet- Shellac coated cotton-jute blend(l), Absorbent layer- compressed cotton(2), Distribution layer- compressed wood pulp (3), superabsorbent layer- hydrogel packed in distribution layer(4) ,Back sheet- tightly woven fabric of cotton and jute blend coated with thin layer shellac(5), hot melt glue(6).
[0008] In the preferred embodiment invention, first layer i.e. top sheet (1) of the absorber is composed of shellac coated cotton and jute blend. Considering user compliance the most effective top sheet is mesh made up of cotton and jute blend coated with thin coat of shellac. The top sheet is made with these materials to alter the polyethylene. Mesh made up of cotton and jute blend will give softness and shellac coat will provide dryness.
[0009] The innovative absorber has second layer i.e. absorption layer (2) composed of compressed cotton in order to reduce the thickness of final product in order to increase user compliance.
[0010] In third layer of absorber i.e. distribution layer (3) compressed wood pulp is used for proper distribution of absorbed contents. This even distribution offers even absorption and storage in superabsorbent layer. Said sheet of compressed wood pulp also gives support to the superabsorbent layer.
[001 1] The absorber of the invention comprises fourth layer of superabsorbent i.e. storage layer (4). In order to make this layer bio-degradable hydrogels are used. Inverted hydrogel of sodium salt of carboxy methyl cellulose cross linked with carbodiimide or any other biodegradable hydrogel can be used in the place of storage layer. This gel is phase inverted to form xerogel and used as superabsorbent by packing it with distribution layer (3).
[0012] The bottom sheet (5) of the innovative absorber i.e. Eco-pad is made up of tightly woven fabric of cotton and jute blend coated with thin layer shellac. This gives support to swollen hydrogel (after absorption) and also provides leakage.
[0013] Use of above stated materials will give completely biodegradable absorber. The shellac coat applied to cotton and jute blend (1 and 5) makes it degrade slowly as a result absorption layer (2), distribution layer (3) and storage layers (4) degrade slowly though they are fast degrading materials. To avoid this new design of Eco-pad ;numeral 2; is states as mentioned earlier.
[0014] In order to achieve this , Absorbent layer (compressed cotton) (2), distribution layer
(compressed wood pulp) (3) and superabsorbent (hydrogel packed in distribution layer) (4) are joined together with hot melt glue (6) as shown in figure numeral 1 to form absorbent layers (a) as shown in figure numeral 2.
[0015] Top sheet (1) and back sheet (5) are joined together only at edges with hot melt glue to form top sheet and back sheet (b) so that absorbent layers (a) can be inserted in top sheet and back sheet (b) as shown in figure numeral 2.
[0016] the extensions (c and d) are provided to the absorbent layers (a) and top sheet and back sheet (b) as shown in figure numeral 2 so as to separate absorbent layers (a) from top
sheet and back sheet (b) after the use and can be disposed off separately so that rate of fast degrading material will not be affected.
[0017] The Eco-pad with above stated design after sterilization is packed with paper wrapper with a paper bag in order to dispose (a) and (b) separately.
[0018] The shape, size, color or any other parameter of said absorber or its cover or paper bag can vary to improve aesthetic appeal of the present innovative absorber.
[0019] The bio-degradable absorber (Eco-pad) of the invention having above indicated characteristics is efficient and reliable in operation and having extremely simple structure with a relatively low cost of production.
Claims
1. The Eco-pad i.e. biodegradable absorber having multi-layer structure, comprising, in sequence from upper layer to lower layer, top sheet- fine mesh made up of cotton-jute blend coated with shellac (1), Absorbent layer- compressed cotton (2), Distribution layer- compressed wood pulp (3), superabsorbent layer- hydrogel (xerogel) packed in distribution layer (4), Back sheet- tightly woven fabric of cotton and jute blend coated with thin layer shellac (5).
2. The biodegradable absorber as claimed in claim 1, characterized in that Absorbent layer (compressed cotton) (2), distribution layer (compressed wood pulp) (3) and superabsorbent (hydrogel packed in distribution layer) (4) are joined together with hot melt glue (6) to form absorbent layers (a).
3. The biodegradable absorber as claimed in claim 1, characterized in that Top sheet (1) and back sheet (5) are joined together only at edges with hot melt glue (6) to form top sheet and back sheet (b) so that absorbent layers (a) can be inserted in top sheet and back sheet (b).
4. The biodegradable absorber as claimed in above claims, characterize in that provided extensions (c and d) to the absorbent layers (a) and top sheet and back sheet (b) to separate absorbent layers (a) from top sheet and back sheet (b) after the use.
5. The biodegradable abso7ber*as claimed in above claims, characterize in that provided paper wrapper and a paper bag in order to dispose absorbent layers (a) and top sheet and back sheet (b) separately.
6. The biodegradable absorber as claimed in claim 1 and 5, characterized in that quantity of materials used in any layer or wrapper or bag will vary according to the intended use of the absorber.
7. The biodegradable absorber as claimed in above claims, can have various sizes, shapes and other aesthetic parameters depending on the intended use of the absorber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN3939MU2015 | 2015-10-16 | ||
| IN3939/MUM/2015 | 2015-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017064725A1 true WO2017064725A1 (en) | 2017-04-20 |
Family
ID=58517896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IN2016/000103 WO2017064725A1 (en) | 2015-10-16 | 2016-04-21 | Biodegradable absorbers (eco-pads) |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2017064725A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925533A (en) * | 2017-12-15 | 2019-06-25 | 码源科技(北京)有限公司 | Liquid-tight material and absorbent |
| EP3721915A1 (en) * | 2019-04-11 | 2020-10-14 | B. Braun Melsungen AG | Medical device and manufacture thereof |
| GR1009910B (en) * | 2019-11-05 | 2021-01-19 | Αιμιλιος Αριστοτελη Κουφος | Multilayered multifunctional tape |
-
2016
- 2016-04-21 WO PCT/IN2016/000103 patent/WO2017064725A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925533A (en) * | 2017-12-15 | 2019-06-25 | 码源科技(北京)有限公司 | Liquid-tight material and absorbent |
| EP3721915A1 (en) * | 2019-04-11 | 2020-10-14 | B. Braun Melsungen AG | Medical device and manufacture thereof |
| WO2020208013A1 (en) * | 2019-04-11 | 2020-10-15 | B. Braun Melsungen Ag | Medical device and manufacture thereof |
| CN113710291A (en) * | 2019-04-11 | 2021-11-26 | 贝朗梅尔松根股份公司 | Medical device and manufacture thereof |
| GR1009910B (en) * | 2019-11-05 | 2021-01-19 | Αιμιλιος Αριστοτελη Κουφος | Multilayered multifunctional tape |
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