WO2023203581A1 - Biodegradable absorbent articles - Google Patents

Biodegradable absorbent articles Download PDF

Info

Publication number
WO2023203581A1
WO2023203581A1 PCT/IN2023/050387 IN2023050387W WO2023203581A1 WO 2023203581 A1 WO2023203581 A1 WO 2023203581A1 IN 2023050387 W IN2023050387 W IN 2023050387W WO 2023203581 A1 WO2023203581 A1 WO 2023203581A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent
gsm
plant
back sheet
banana stem
Prior art date
Application number
PCT/IN2023/050387
Other languages
French (fr)
Inventor
Swetha Mangalapally
Kantale Pandu Ranga Rao
Original Assignee
Swetha Mangalapally
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swetha Mangalapally filed Critical Swetha Mangalapally
Publication of WO2023203581A1 publication Critical patent/WO2023203581A1/en

Links

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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51113—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A61F13/15252—Properties of the article, e.g. stiffness or absorbency compostable or biodegradable
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51498—Details not otherwise provided for
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • A61F2013/51139—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material being woven or knitted fabrics
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
    • A61F2013/5147—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties the outer layer being adhesive itself
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530007—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made from pulp
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials

Definitions

  • the present invention relates to biodegradable and compostable absorbent articles like sanitary napkin, diaper, pant diaper, adult incontinence guard, capable of absorbing discharged bodily fluids like blood/vaginal discharge, urine, feces etc.
  • Background of Invention Absorbent articles like diapers come in a variety of styles. Cloth diapers are a better alternative to disposable diapers since they can be washed, repaired, and re-used. However, if these items are discarded, it would be contributing to landfill waste. Because a newborn goes through an average of 5,000 diapers before being toilet-trained, the waste generated is enormous. It was in the late 1960s when disposable diapers were introduced in the market.
  • the disposable diapers are composed of a plastic sheet, a liquid adsorbent sheet and liquid permeable plastic sheet. They are discarded after single use. It was keenly observed that disposal of these diapers had been quite challenging because of the plastic used in it. The consumption of these diapers was also about 6-8 diapers for a baby for a day, which led to disposal of more than 2000-4000 diapers a year. Therefore, there came a concept of using bioplastics which was known in the era. Biodegradable compostable diapers help the environment while providing the user with a healthier choice of diaper. Further, they do not add to landfills because the diapers are biodegradable. The limited quantity of resources available to create diapers is a more pressing issue than the space taken up in landfills.
  • Diapers constructed of polymers generated from fossil petroleum are indeed a problem. Petroleum is a finite resource that will endure only a few decades. This problem can be solved by employing a biobased plastic. Biobased polymers, unlike petroleum-based plastics, are made from sustainable resources. Plants such as trees, grain, and sugarcane make up the majority of these resources. It has been noted that today's well-observed and well-informed consumers are willing to go the extra mile to buy a product that is not only excellent for their baby but also beneficial for the environment. Some companies take advantage of this feature and mislead consumers by claiming to use eco-friendly nappies and bioplastics. Consumers these days focus more on the composition of these diapers to be more informed, which helps one to be more segregated.
  • WO2009/012284 A1 discloses a disposable diaper with back sheet and top sheets made up of bicomponent spun bond non-woven material comprising a renewable polymer and a non-renewable thermoplastic polymer.
  • thermoplastic polymer is polypropylene, a material which is non derivable from the renewable source and not biodegradable.
  • WO2016023016 A1 discloses a disposable diaper that is biobased and/or biodegradable.
  • the diaper is either made of wholly or partially renewable resources, at the same time can decompose in a compost site and biodegrade in a conventional landfill as well as in marine conditions such as fresh, brackish, or salt water.
  • Commercial disposable diapers have numerous drawbacks, including the development of skin rashes and allergies, as well as the risk of toxicity to the user.
  • Commercial diapers are harmful to the environment.
  • the curvature of the waist-hipline in children wearing them is sometimes distorted. Consequently, there is a need for an improved completely biodegradable, compostable, and well-designed diaper.
  • the present invention discloses a plant-based biodegradable absorbent article comprising: a top sheet (1) comprising antibacterial woven fabric of 15 - 25 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) comprising antibacterial material selected from the group comprising material prepared from woven banana stem pulp, wood pulp, cotton, or combination thereof and wherein material prepared from banana stem pulp is in 50-100% of the total absorbent material, wherein absorbent element is of 30 - 40 GSM; and a biodegradable leak proof back sheet (4) of 20 - 25 GSM, having an outer side and an inner side, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is provided with an adhesive layer to facilitate temporary adherence to the garment worn by user, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4).
  • a top sheet (1) comprising antibacterial woven fabric of
  • FIGURES Diagrammatic representation of the article; (1) a top sheet; (2) a super-absorbent polymer (SAP); (3) an absorbent element; (4) a biodegradable leak proof back sheet.
  • SAP super-absorbent polymer
  • FIGURES Figure 1: Diagrammatic representation of the article; (1) a top sheet; (2) a super-absorbent polymer (SAP); (3) an absorbent element; (4) a biodegradable leak proof back sheet.
  • the term “peel-off” refers to removing a thin outer covering or layer.
  • the present invention discloses a plant-based biodegradable absorbent article comprising: a top sheet (1) comprising antibacterial woven fabric of 15 - 25 GSM; a super-absorbent polymer (SAP) (2) of 40 - 50 GSM; an absorbent element (3) comprising antibacterial material selected from the group comprising material prepared from woven banana stem pulp, wood pulp, cotton, or combination thereof and wherein material prepared from banana stem pulp is in 50- 100% of the total absorbent material, wherein absorbent element is of 30 - 40 GSM; and a biodegradable leak proof back sheet (4) of 20 - 25 GSM, having an outer side and an inner side, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is provided with an adhesive layer to facilitate temporary adherence to the garment worn by user, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3)
  • the plant-based biodegradable absorbent article wherein the article is a diaper.
  • the adhesive layer is provided with a peel-off strip, which is peeled prior to using the article, and wherein the peel-off strip comprises a sheet of paper.
  • the plant-based biodegradable absorbent article wherein the top sheet, the SAP, the absorbent element, and the leak proof back sheet are fastened by an adhesive glue or stitching.
  • the plant-based biodegradable absorbent article wherein the top sheet (1) is antibacterial woven fabric made-up of fibre selected from banana stem fibre cotton fibre, bamboo fibre and combination thereof, wherein banana stem fibre is 80-100%, and wherein the absorbent element (3) comprises an absorbent material 100 % derived from banana stem pulp, and wherein the leak proof back sheet (4) is made-up of corn starch.
  • the plant-based biodegradable absorbent article wherein the top sheet (1) is antibacterial woven fabric made-up of banana stem fibre.
  • the plant-based biodegradable absorbent article wherein the top sheet (1) is antibacterial blended woven fabric of banana stem fibre and cotton fibre, wherein banana stem fibre is 80-100%.
  • the plant-based biodegradable absorbent article wherein the absorbent element (3) consists of banana stem pulp and wood pulp, wherein banana stem pulp is in 50-100%.
  • top sheet (1) is of 25 GSM; wherein SAP (2) is of 40 - 50 GSM; wherein the absorbent element (3) is of 35 GSM; and wherein the leak proof back sheet (4) is of 23 GSM.
  • the plant-based biodegradable absorbent article wherein the absorbent element (3) has an antibacterial property and an absorbent capacity of 5 to 7 mL/grams.
  • the article of the present invention during the surveys, is also identified to be more comfortable to the user and has also been found to cause less irritation and rashes.
  • SAP super-absorbent polymer
  • the adhesive layer is provided on the outer side of back sheet with a peel-off strip, which is peeled prior to using the article.
  • the top sheet (1) of 15 - 25 GSM, is an antibacterial woven fabric made-up of fibre selected from banana stem fibre, cotton fibre, bamboo fibre and combination thereof.
  • the absorbent element (3) is an absorbent material 100 % derived from banana stem pulp and is of 35 GSM.
  • the leak proof back sheet (4) is of 23 GSM thick and made-up of corn starch.
  • the super- absorbent polymer (SAP) is of 40 - 50 GSM.
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven banana stem fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven banana stem fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and wood pulp with banana stem pulp in range of 50-95% and remaining being wood pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven banana stem fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and cotton with banana stem pulp in range of 50-95% and remaining being cotton; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven cotton fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven cotton fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and wood pulp with banana stem pulp in range of 50-95% and remaining being wood pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven cotton fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and cotton with banana stem pulp in range of 50-95% and remaining being cotton; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven blended fibre made up of banana stem fibre and cotton fibre of 20 GSM with banana stem fibre in range of 70-95% and remaining being cotton fibre; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven blended fibre made up of banana stem fibre and cotton fibre of 20 GSM with banana stem fibre in range of 70-95% and remaining being cotton fibre; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and wood pulp with banana stem pulp in range of 50-95% and remaining being wood pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • the plant based biodegradable absorbent article comprises a top sheet made up of woven blended fibre made up of banana stem fibre and cotton fibre of 20 GSM with banana stem fibre in range of 70-95% and remaining being cotton fibre; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and cotton with banana stem pulp in range of 50-95% and remaining being cotton; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch.
  • SAP super-absorbent polymer
  • Example 11 Preparation of processed Banana pulp for use in absorbent element: Banana fibre, after extraction is cooked in water to remove the lignin present in it and to obtain banana pulp. The obtained banana pulp has increased percentage of cellulose, which improves the absorption capacity. This processed banana pulp is more strong, resilient, and can be prepared in various shapes and forms.
  • Example 12 Absorbent capacity of the article: Absorbent capacity of the article disclosed in present application is attributed to absorbent element and accordingly different embodiments of the article disclosed in present application with respect to absorbent element (3) are evaluated in 10 repeated sets of experiments, using a normal water as liquid medium for absorption. Water was poured to see the soaking and absorption. Excess of the unabsorbed liquid was calculated by putting the plate in a slanting position.
  • Table 1 Absorbent capacity of different article ADVANTAGES OF PRESENT INVENTION: x
  • the diapers are gentle on the skin or user/ baby. x They are adhesive to the pants of baby, therefore, there is no pressure onto hips of the baby. x They are decomposable and ecofriendly. x They are prepared from renewable sources, which is from plants. x They are cost effective. x
  • the absorbent articles of present invention have antibacterial characteristics due to usage of plant derived material having antibacterial properties. x
  • the absorbent article of present invention has improved absorption over the articles known in the art.
  • the absorbent article of the present invention is free of chemicals such polyethylene, polypropylene, and absorbent polymers, used in manufacturing of the articles known in the art.
  • the absorbent article of the present invention is free of different pollutants including polychlorodibenzo-p-dioxins (PCDDs), organically active compounds of ethylene benzene, xylene, and toluene, polyacrylates or phthalates, known to be present in articles known in the art.
  • PCDDs polychlorodibenzo-p-dioxins
  • organically active compounds of ethylene benzene, xylene, and toluene polyacrylates or phthalates

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The present invention relates to a plant-based biodegradable article comprising: a top sheet (1) made up of antibacterial woven fabric; a super-absorbent polymer (2); an absorbent element (3) made up of antibacterial material selected from the group comprising banana stem pulp, wood pulp, cotton, or combination thereof; and a biodegradable leak proof back sheet (4), and wherein the outer side of the back sheet is provided with an adhesive layer to facilitate temporary adherence to the garment worn by user. The article of present invention is gentle on the skin of user and are adhere to the pants, thereby creating no direct pressure onto the body of user.

Description

BIODEGRADABLE ABSORBENT ARTICLES Field of Invention: The present invention relates to biodegradable and compostable absorbent articles like sanitary napkin, diaper, pant diaper, adult incontinence guard, capable of absorbing discharged bodily fluids like blood/vaginal discharge, urine, feces etc. Background of Invention: Absorbent articles like diapers come in a variety of styles. Cloth diapers are a better alternative to disposable diapers since they can be washed, repaired, and re-used. However, if these items are discarded, it would be contributing to landfill waste. Because a newborn goes through an average of 5,000 diapers before being toilet-trained, the waste generated is enormous. It was in the late 1960s when disposable diapers were introduced in the market. The disposable diapers are composed of a plastic sheet, a liquid adsorbent sheet and liquid permeable plastic sheet. They are discarded after single use. It was keenly observed that disposal of these diapers had been quite challenging because of the plastic used in it. The consumption of these diapers was also about 6-8 diapers for a baby for a day, which led to disposal of more than 2000-4000 diapers a year. Therefore, there came a concept of using bioplastics which was known in the era. Biodegradable compostable diapers help the environment while providing the user with a healthier choice of diaper. Further, they do not add to landfills because the diapers are biodegradable. The limited quantity of resources available to create diapers is a more pressing issue than the space taken up in landfills. Diapers constructed of polymers generated from fossil petroleum are indeed a problem. Petroleum is a finite resource that will endure only a few decades. This problem can be solved by employing a biobased plastic. Biobased polymers, unlike petroleum-based plastics, are made from sustainable resources. Plants such as trees, grain, and sugarcane make up the majority of these resources. It has been noted that today's well-observed and well-informed consumers are willing to go the extra mile to buy a product that is not only excellent for their baby but also beneficial for the environment. Some companies take advantage of this feature and mislead consumers by claiming to use eco-friendly nappies and bioplastics. Consumers these days focus more on the composition of these diapers to be more informed, which helps one to be more segregated. Reference is made to WO2009/012284 A1, which discloses a disposable diaper with back sheet and top sheets made up of bicomponent spun bond non-woven material comprising a renewable polymer and a non-renewable thermoplastic polymer. In the description it was mentioned to use a biodegradable material. In fact, it was claimed that the thermoplastic polymer is polypropylene, a material which is non derivable from the renewable source and not biodegradable. Reference is made to WO2016023016 A1, which discloses a disposable diaper that is biobased and/or biodegradable. The diaper is either made of wholly or partially renewable resources, at the same time can decompose in a compost site and biodegrade in a conventional landfill as well as in marine conditions such as fresh, brackish, or salt water. Commercial disposable diapers have numerous drawbacks, including the development of skin rashes and allergies, as well as the risk of toxicity to the user. Commercial diapers are harmful to the environment. Furthermore, due to the design of commercial diapers, the curvature of the waist-hipline in children wearing them is sometimes distorted. Consequently, there is a need for an improved completely biodegradable, compostable, and well-designed diaper. SUMMARY OF THE INVENTION This summary is provided to introduce a selection of concepts in a simplified format that are further described in the detailed description of the invention. The present invention discloses a plant-based biodegradable absorbent article comprising: a top sheet (1) comprising antibacterial woven fabric of 15 - 25 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) comprising antibacterial material selected from the group comprising material prepared from woven banana stem pulp, wood pulp, cotton, or combination thereof and wherein material prepared from banana stem pulp is in 50-100% of the total absorbent material, wherein absorbent element is of 30 - 40 GSM; and a biodegradable leak proof back sheet (4) of 20 - 25 GSM, having an outer side and an inner side, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is provided with an adhesive layer to facilitate temporary adherence to the garment worn by user, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4). DESCRIPTION OF ACCOMPANYING FIGURES: Figure 1: Diagrammatic representation of the article; (1) a top sheet; (2) a super-absorbent polymer (SAP); (3) an absorbent element; (4) a biodegradable leak proof back sheet. DETAILED DESCRIPTION OF THE INVENTION Those skilled in the art will be aware that the present disclosure is subject to variations and modifications other than those specifically described herein. It is to be understood that the present disclosure includes all such variations and modifications. The disclosure also includes all such features of the invention, and steps of the process that are referred to or indicated in this specification, individually or collectively, and any and all combinations of any or more of such features or steps. The articles “a”, “an” and “the” are used to refer to one or to more than one (i.e., to at least one) of the grammatical object of the article. The terms “comprise” and “comprising” are used in the inclusive, open sense, meaning that additional elements may be included. It is not intended to be construed as “consists of only”. Throughout this specification, unless the context requires otherwise, the word “comprise”, and variations such as “comprises” and “comprising”, will be understood to imply the inclusion of a stated element or step or group of elements or steps but not the exclusion of any other element or step or group of elements or steps. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the disclosure, the preferred methods, and materials are now described. All publications mentioned herein are incorporated herein by reference. The present disclosure is not to be limited in scope by the specific examples described herein, which are intended for the purposes of exemplification only. Functionally equivalent products and methods are clearly within the scope of the disclosure, as described herein. The term “biodegradable” refers to being able to decay naturally and in a way that is not harmful. The term “leak proof” refers to preventing the contents of the article from escaping it. The term “peel-off” refers to removing a thin outer covering or layer. The present invention discloses a plant-based biodegradable absorbent article comprising: a top sheet (1) comprising antibacterial woven fabric of 15 - 25 GSM; a super-absorbent polymer (SAP) (2) of 40 - 50 GSM; an absorbent element (3) comprising antibacterial material selected from the group comprising material prepared from woven banana stem pulp, wood pulp, cotton, or combination thereof and wherein material prepared from banana stem pulp is in 50- 100% of the total absorbent material, wherein absorbent element is of 30 - 40 GSM; and a biodegradable leak proof back sheet (4) of 20 - 25 GSM, having an outer side and an inner side, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is provided with an adhesive layer to facilitate temporary adherence to the garment worn by user, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4). In an embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the article is a diaper. In another embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the adhesive layer is provided with a peel-off strip, which is peeled prior to using the article, and wherein the peel-off strip comprises a sheet of paper. In yet another embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the top sheet, the SAP, the absorbent element, and the leak proof back sheet are fastened by an adhesive glue or stitching. In one more embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the top sheet (1) is antibacterial woven fabric made-up of fibre selected from banana stem fibre cotton fibre, bamboo fibre and combination thereof, wherein banana stem fibre is 80-100%, and wherein the absorbent element (3) comprises an absorbent material 100 % derived from banana stem pulp, and wherein the leak proof back sheet (4) is made-up of corn starch. In one more embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the top sheet (1) is antibacterial woven fabric made-up of banana stem fibre. In one more embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the top sheet (1) is antibacterial blended woven fabric of banana stem fibre and cotton fibre, wherein banana stem fibre is 80-100%. In one more embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the absorbent element (3) consists of banana stem pulp and wood pulp, wherein banana stem pulp is in 50-100%. In another embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein top sheet (1) is of 25 GSM; wherein SAP (2) is of 40 - 50 GSM; wherein the absorbent element (3) is of 35 GSM; and wherein the leak proof back sheet (4) is of 23 GSM. In yet another embodiment of present invention, there is provided the plant-based biodegradable absorbent article, wherein the absorbent element (3) has an antibacterial property and an absorbent capacity of 5 to 7 mL/grams. The article of the present invention, during the surveys, is also identified to be more comfortable to the user and has also been found to cause less irritation and rashes. EXAMPLES: Example 1: Preparation of absorbent article The plant-based biodegradable absorbent article was prepared by stacking together a top sheet (1), a super-absorbent polymer (SAP) (2); an absorbent element (3); a biodegradable leak proof back sheet (4). The four layers are are fastened by an adhesive glue or stitching. The adhesive layer is provided on the outer side of back sheet with a peel-off strip, which is peeled prior to using the article. The top sheet (1), of 15 - 25 GSM, is an antibacterial woven fabric made-up of fibre selected from banana stem fibre, cotton fibre, bamboo fibre and combination thereof. The absorbent element (3) is an absorbent material 100 % derived from banana stem pulp and is of 35 GSM. The leak proof back sheet (4) is of 23 GSM thick and made-up of corn starch. The super- absorbent polymer (SAP) is of 40 - 50 GSM. Example 2: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven banana stem fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 3: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven banana stem fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and wood pulp with banana stem pulp in range of 50-95% and remaining being wood pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 4: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven banana stem fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and cotton with banana stem pulp in range of 50-95% and remaining being cotton; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 5: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven cotton fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 6: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven cotton fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and wood pulp with banana stem pulp in range of 50-95% and remaining being wood pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 7: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven cotton fibre of 20 GSM; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and cotton with banana stem pulp in range of 50-95% and remaining being cotton; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 8: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven blended fibre made up of banana stem fibre and cotton fibre of 20 GSM with banana stem fibre in range of 70-95% and remaining being cotton fibre; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 9: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven blended fibre made up of banana stem fibre and cotton fibre of 20 GSM with banana stem fibre in range of 70-95% and remaining being cotton fibre; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and wood pulp with banana stem pulp in range of 50-95% and remaining being wood pulp; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 10: In one of the embodiment the plant based biodegradable absorbent article comprises a top sheet made up of woven blended fibre made up of banana stem fibre and cotton fibre of 20 GSM with banana stem fibre in range of 70-95% and remaining being cotton fibre; a super-absorbent polymer (SAP) (2); an absorbent element (3) of 35 GSM comprising processed banana stem pulp and cotton with banana stem pulp in range of 50-95% and remaining being cotton; and a biodegradable leak proof back sheet (4) of 23 GSM, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is optionally provided with an adhesive layer with a peel-off strip of suitable material, wherein the SAP (2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element (3) is interposed between the SAP (2) and the leak proof back sheet (4) made-up of corn starch. Example 11: Preparation of processed Banana pulp for use in absorbent element: Banana fibre, after extraction is cooked in water to remove the lignin present in it and to obtain banana pulp. The obtained banana pulp has increased percentage of cellulose, which improves the absorption capacity. This processed banana pulp is more strong, resilient, and can be prepared in various shapes and forms. Example 12: Absorbent capacity of the article: Absorbent capacity of the article disclosed in present application is attributed to absorbent element and accordingly different embodiments of the article disclosed in present application with respect to absorbent element (3) are evaluated in 10 repeated sets of experiments, using a normal water as liquid medium for absorption. Water was poured to see the soaking and absorption. Excess of the unabsorbed liquid was calculated by putting the plate in a slanting position. The results obtained are summarized herein below. Table 1: Absorbent capacity of different article
Figure imgf000010_0001
ADVANTAGES OF PRESENT INVENTION: x The diapers are gentle on the skin or user/ baby. x They are adhesive to the pants of baby, therefore, there is no pressure onto hips of the baby. x They are decomposable and ecofriendly. x They are prepared from renewable sources, which is from plants. x They are cost effective. x The absorbent articles of present invention have antibacterial characteristics due to usage of plant derived material having antibacterial properties. x The absorbent article of present invention has improved absorption over the articles known in the art. x The absorbent article of the present invention is free of chemicals such polyethylene, polypropylene, and absorbent polymers, used in manufacturing of the articles known in the art. These chemicals cause irritation, rashes and even UTIs for babies frequently when used for longer periods of time in a day. x The absorbent article of the present invention is free of different pollutants including polychlorodibenzo-p-dioxins (PCDDs), organically active compounds of ethylene benzene, xylene, and toluene, polyacrylates or phthalates, known to be present in articles known in the art.

Claims

AIM: 1. A plant-based biodegradable absorbent article comprising: a top sheet (1) comprising antibacterial woven fabric of 15 - 25 GSM; a super-absorbent polymer (SAP) (2) of 40 - 50 GSM; an absorbent element (3) comprising antibacterial material selected from the group comprising material prepared from banana stem pulp, wood pulp, cotton, or combination thereof and wherein material prepared from banana stem pulp is in 50- 100% of the total absorbent material, wherein absorbent element is of 30 - 40 GSM; and a biodegradable leak proof back sheet (4) of 20 - 25 GSM, having an outer side and an inner side, wherein the inner side of back sheet is towards the absorbent element (3), and wherein the outer side of the back sheet is provided with an adhesive layer to facilitate temporary adherence to the garment worn by user, wherein the SAP
(2) is interposed between top sheet (1) and absorbent element (3), wherein the absorbent element
(3) is interposed between the SAP (2) and the leak proof back sheet (4). 2. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the article is a diaper, which is friendly to gentle and tender skin 3. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the adhesive layer is provided with a peel-off strip, which is peeled prior to using the article, and wherein the peel-off strip comprises a sheet of paper.
4. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the top sheet, the SAP, the absorbent element, and the leak proof back sheet are fastened by an adhesive glue or stitching.
5. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the top sheet (1) is antibacterial woven fabric made-up of fibre selected from banana stem fibre cotton fibre, bamboo fibre and combination thereof, wherein banana stem fibre is 80- 100%, and wherein the absorbent element (3) comprises an absorbent material 100 % derived from banana stem pulp, and wherein the leak proof back sheet (4) is made-up of corn starch.
6. The plant-based biodegradable absorbent article as claimed in claim 5, wherein the top sheet (1) is antibacterial woven fabric made-up of banana stem fibre.
7. The plant-based biodegradable absorbent article as claimed in claim 5, wherein the top sheet (1) is antibacterial blended woven fabric of banana stem fibre and cotton fibre, wherein banana stem fibre is 80-100%.
8. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the absorbent element (3) consists of banana stem pulp and wood pulp, wherein banana stem pulp is in 50-100%.
9. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the top sheet (1) is of 25 GSM; wherein SAP (2) is of 40-50 GSM; wherein the absorbent element (3) is of 35 GSM; and wherein the leak proof back sheet (4) is of 23 GSM.
10. The plant-based biodegradable absorbent article as claimed in claim 1, wherein the absorbent element (3) has an antibacterial property and an absorbent capacity of 5 to 7 mL/grams.
PCT/IN2023/050387 2022-04-21 2023-04-20 Biodegradable absorbent articles WO2023203581A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202241015424 2022-04-21
IN202241015424 2022-04-21

Publications (1)

Publication Number Publication Date
WO2023203581A1 true WO2023203581A1 (en) 2023-10-26

Family

ID=88419371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2023/050387 WO2023203581A1 (en) 2022-04-21 2023-04-20 Biodegradable absorbent articles

Country Status (1)

Country Link
WO (1) WO2023203581A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104983517A (en) * 2015-07-14 2015-10-21 盐城工业职业技术学院 Paper diaper made from banana fiber mixed material
US20180140469A1 (en) * 2016-11-22 2018-05-24 Saathi, Inc. Absorbent article having natural fibers
AU2021201952A1 (en) * 2020-03-31 2021-10-14 Zeta Group (Nz) Limited A biodegradable, compostable diaper and method of manufacture thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104983517A (en) * 2015-07-14 2015-10-21 盐城工业职业技术学院 Paper diaper made from banana fiber mixed material
US20180140469A1 (en) * 2016-11-22 2018-05-24 Saathi, Inc. Absorbent article having natural fibers
AU2021201952A1 (en) * 2020-03-31 2021-10-14 Zeta Group (Nz) Limited A biodegradable, compostable diaper and method of manufacture thereof

Similar Documents

Publication Publication Date Title
Bashari et al. Cellulose‐based hydrogels for personal care products
CA2723889C (en) Environmentally-friendly disposable absorbent article
AU2011244988B2 (en) Disposable diaper
CN204971881U (en) Absorbent articles's extending structure
JP2020500672A5 (en)
US8115050B2 (en) Soaker pad for cloth diaper
AU2007229313B2 (en) Absorbent article
US20040030311A1 (en) Absorbent product having disposable absorbent
TW301603B (en)
JPH07505059A (en) disposable supplies
US20210298961A1 (en) Biodegradable, compostable diaper and method of manufacture thereof
CN113367900B (en) Paper diaper with good diversion effect
AU2006343881B2 (en) Disposable personal product
JP2005087654A (en) Incontinence pad for women
WO2023203581A1 (en) Biodegradable absorbent articles
CN112587314A (en) Biodegradable sports growth trousers
CN215779201U (en) Biodegradable sports growth trousers
CN216908350U (en) Bacteriostatic peculiar smell-removing sanitary towel
CN219049174U (en) Novel skin-friendly adult incontinence trousers
CN115813665B (en) Preparation process of dry sanitary towel based on high-open pore plastic-absorbing net
JP3805034B2 (en) Absorbent articles
JP2000318108A (en) Laminated sheet and highly absorbent article
CN212547400U (en) Non-bleaching bamboo fiber surface layer paper diaper
SE518409C2 (en) Absorbent structure, preparation thereof and use in various forms of hygiene articles
CN209984455U (en) Pure biological substance sanitary towel with natural bacteriostatic action

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23791468

Country of ref document: EP

Kind code of ref document: A1