PREAMBLE TO THE DESCRIPTION
The present invention is the preparation of super absorbent layer from natural polymer for disposable
baby diapers. The preparation of super absorbent polymer replacement for disposable baby diapers
maintains high absorbency, provides comfort and environmental benefits.
DESCRIPTION
Field of Invention
The current invention relates to the Biodegradable polymers for replacement of disposable baby
diapers. This invention helps in the environmental benefits.
Background of the Invention
'
The preparation of super absorbent polymer (SAP) replacement for disposable baby diapers involves
the utilization of natural polymers' such as chitosan and cellulose. This invention is related to
absorbent goods, specifically better absorbent products with barrier sheets that are biodegradable,
fluid impervious, and allow for flushing after use. This approach offers a sustainable and eco-friendly alternative to baby diapers. For a considerable amount of time, absorbent products like surgical dressings, sanitary napkins, and diapers have been made using barrier sheets made of one or more
piles of impregnated papei’ to make them repellent or semi-repellent, as well as rubber, polyethylene
or polypropylene thin films, and the like. The polyethylene films have shown to be the most effective
from both a functional and commercial standpoint. However, absorbent products incorporating such
films as moisture barriers cannot be safely flushed away in sewage disposal systems because
polyethylene and other polymeric films are relatively inert and are not attacked or broken down by
bacteria typically found in public and private sewage disposal systems. The polyethylene or polymeric
films used as a barrier sheet stay intact even though the other absorbent product's components will
quickly break down and be attacked by bacteria in a public or private sewage disposal system. lfthe
sheets do not clog pipes and sewage disposal equipment, they will pass through the sewage treatment plant and cause pollution issues. From above it is clear that providing a disposable baby diaper is truly important. We produce a super absorbent polymer replacement for disposable baby diapers which will be readily broken down by bacterial action in private.
Summary of the Invention
In order to prevent pollution and ensure that the product meets the diaper‘s functionél requirements,
this project aims ‘
to manufacture a biodegradable baby nappy by replacing the non-woven
polypropylene with specifically finished biodegradable viscose non-woven. To prepare a super
absorbent polymer (SAP) replacement for disposable baby diapers, focus on creating a material with
high absorbency, biodegradability, and comfort. Begin by selecting natural polymers like chitosan
and cellulose derivatives as the base. Incorporate cross-linking agents to enhance water absorption
capacity. Experiment with environmentally friendly additives f0; odor control and antibacterial
properties. Optimize the ratio ingredients to achieve the desired absorbency and durability. Test the material's performance in terms of liquid retention, gel formation, and comfort. Aim for a sustainable solution that reduces environmental impact while meeting the absorbency _requirements of disposable diapers.
Disclosure of the invention:
Reference may be made to patent number CNI |0628086A by Peng Liyuan titled “Composite super
absorbent resin” The invention relates to a composite super absorbent resin, which comprises the
following components by weighf: 85%-90% ofsuper absorbent resin, 5%-8% ofchitin and 5%-
7% of modified potassium titanate whisker. The preparation method includes the steps of: (I) adding
polyethylene glycol, cgllulose, water and azodiisobutyronitrile into a reaction kettle according to a
weight part ratio of 5-8:50-60:30-44:l-2, and carrying out grafi modification at 90DEG C to obtain
polyethylene glycol cross-linked super absorbent resin gel; and (2) adding chitin and the modified
potassium titanate whisker intothe super absorbent resin gel in proportion, and conducting
mechanical stirring, and performing drying, dewatering and crushing to obtain the
composite super absorbent resin. The invention has the beneficial effects that: the problems of skin
irritation, poor antibacterial properties and poor gel strength in existing super absorbent resin are
solved.
Reference may be made to patent number USl l81336632 by Buchalter Sharon titled “Natural baby
diaper including bamboo fibre”. The invention relates to natural baby products and related methods
of use. Disposéble baby hygiene products, particularly disposable baby hygiene products made with
natural, sustainable, environmentally-responsible, and/0r biodegradable materials
include disposable baby diapers made with bamboo and other natural, sustainable, environmentally responsible,
and/or biodegradable materials and disposable baby swim diapers made with natural,
sustainable, environmentalLy-responsible, and/or biodegradable materials.
Reference may be made to patent number CN203677386U by Zheng Hongchun titled “Paper diaper with urine absorbent pad”. The utility model discloses a paper diaper with a urine absorbent pad. The front end of a paper diaper body is connected with a front end fixing part; the rear end of the paper diaper body is connected with a rear end fixing part; the paper diaper body comprises a urinating area
positioned at the front end of the paper diaper body and a butt attaching area positioned at the rear end of the paper diaper body; the urine absorbent pad is of a monolayer structure or a multilayer structure; the surface of one side, which makes contact with the butt, of the urine absorbent pad is r made of a sofi skin-friendly material; the back éide of the urine absorbent pad is designed to be waterproof or impervious; the urine absorbent pad is fixedly arranged on the inner side of the butt attaching area or the urine absorbent pad and the butt attaching area are integrally designed at the inner side ofthe butt attaching area, or the urine absorbent pad is hidden below the surface layer of one side, which makes contact with the butt, in the butt 'attaching area. According to the paper diaper
disclosed by the utility model, urine does not make contact with the butt, and the butt has no moisture
and is cooler and more comfortable. After the urine absorbent pad is used; if small amount of
excrement is defecated, the urine absorbent' pad is only needed to be changed without change of the
whole paper diaper or a nursing pad, so that the cosi is reduced and the waste is reduced.
Reference may be made to patent number W02013 l 59 1 96A! by Brownlee James Roy [CA]; Watson
Doreen Bever|y[CA] titled “Reusable washable multi piece disposable baby diaper system”. The
invention relates to A multi-piece diaper system has a machine washable, re-usable or disposable nonabsorbent shell, which can receive removable and replaceable absorbent pads which are
either disposable and non-reusable or Washable and re-usable. Thus the mother can choose a
combination which is either a fully disposable, non-reusable diaper, a diaper which is
partly disposable and partly reusable, or a diaper which is fully washable and reusable.
Reference may be made to patent number W02016166759Al by Dargatzky Agmon Hadas [IL] titled
“Absorbent pad”. The present-invention provides a multilayered absorbent pad for fluid collection
and prevention of a fluid leakage through said pad, comprising a top fluid-permeable
layer for absorbing the 'fluid that comes in contact with said pad, a middle fluid- impermeable
layer for preventing the fluid leakage; and a bottom fluid-permeable layer for absorbing the fluid that occasionally leaks through said middle layer, thereby protecting the underlying surface area.
Claims
1. The preparation of superabsorbent polymer (SAP) replacement for disposable baby diapers
involves using natural polymers extracted from natural sources.
2. According to claim 1, natural polymer is dissolved in suitable solvent for preparing a base
solution. Add the crosslinking agent to the polymer solution. Stir the mixture thoroughly to
ensure uniform distribution.
3. As indicated in claim I, dry the super absorbent polymer sponge by freeze-drying technique
4. To~develop a top quick liquid transport layer and bottom sheet with water repellent agent.
The prepared top layer is stitched with bottom layer leaving space to set the absorbent core.
5. For preparation of claim 1, elastic material is used in the side seam of the diaper to get
expandable nature, so that it will collect the fluid without leakage.
6. According to claim I, the prepared disposable baby diaper was tested through processes like
liquid strike through, total absorption capacity, wetback, absorption area, retention capacity,
SAP absorption capacity, anti-microbial activity and degradation capacity.