Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Biodegradable super-absorbent non-woven fabric

A biodegradable and superabsorbent technology, applied in wet spinning, non-woven fabrics, spinning solution preparation, etc., can solve problems such as allergies, application, white pollution, etc.

Inactive Publication Date: 2015-04-22
FUJIAN HENGAN HLDG CO LTD +2
View PDF4 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the core body of sanitary products (such as diapers, sanitary napkins, adult nursing pads, etc.) usually adopts granular acrylic superabsorbent polymer (Super Absorbent Polymer, referred to as SAP, the same below) as the absorber, and granular SAP often appears during use. Problems such as uneven distribution, easy flow and product core breakage, although acrylic super absorbent fiber (Super Absorbent Fiber, referred to as SAF, the same below) can solve some of the above problems, but it is derived from petroleum and is not renewable, and SAP and SAF often has acrylic acid monomer residues. When used in sanitary products, the monomers are leached out with the liquid and contact with the skin, which is prone to allergies
Although conventional seaweed fiber has been successfully developed, it is difficult to be used as an absorbent material in the hygiene product industry due to its low water absorption rate
[0004] In addition, the non-woven fabrics used in disposable sanitary products such as diapers and sanitary napkins are based on polyolefin resins, which have been degraded in the natural environment for hundreds of years, resulting in serious "white pollution"
[0005] Moreover, with the improvement of human living standards, consumers are increasingly aware of health protection, and the sanitary materials and sanitary products currently sold on the market basically do not have antibacterial functions, so there are hidden dangers of secondary pollution and cross-infection. Potential threat to user's health

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Biodegradable super-absorbent non-woven fabric
  • Biodegradable super-absorbent non-woven fabric
  • Biodegradable super-absorbent non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: First prepare 3-chloro-2-hydroxypropyltrimethylammonium chloride, and prepare it into a solution with a mass fraction of 50% for later use; dissolve sodium alginate (molecular weight: 300,000) in the mass fraction In a 5% sodium hydroxide aqueous solution, a sodium alginate solution with a mass fraction of 4% is prepared; a calcium chloride coagulation solution with a mass fraction of 3% is prepared; then the sodium alginate solution is transferred into a reaction kettle, and stirred Heating, stirring at 220 r / min, heating to 60°C, slowly adding 3-chloro-2-hydroxypropyltrimethylammonium chloride solution into the reaction kettle, so that the sugar units on the sodium alginate chain in the solution and the 3 The molar ratio of -chloro-2-hydroxypropyltrimethylammonium chloride is 10:1, and the reaction is completed after stirring for 4 hours at 60°C; the reaction solution is cooled down, degassed under reduced pressure, and the spinning stock solution is obtaine...

Embodiment 2

[0023] Example 2: First prepare 3-chloro-2-hydroxypropyltrimethylammonium chloride, and prepare it into a solution with a mass fraction of 50% for later use; dissolve sodium alginate (molecular weight: 400,000) in a mass fraction of In a 5% sodium hydroxide aqueous solution, a sodium alginate solution with a mass fraction of 5% is prepared; a 5% calcium chloride coagulation liquid is prepared; then the sodium alginate solution is transferred to a reaction kettle, stirred and heated, The stirring rate is 300r / min, heated to 70°C, and slowly adding 3-chloro-2-hydroxypropyltrimethylammonium chloride solution into the reaction kettle, so that the sugar units on the sodium alginate chain in the solution and the 3-chloro- The molar ratio of 2-hydroxypropyltrimethylammonium chloride is 3:1, and the reaction is completed after stirring at 80°C for 12 hours; the reaction solution is cooled down, degassed under reduced pressure, and the spinning stock solution is obtained, and the spinni...

Embodiment 3

[0024] Example 3: First prepare 3-chloro-2-hydroxypropyltrimethylammonium chloride, and prepare it into a solution with a mass fraction of 50% for later use; dissolve sodium alginate (molecular weight: 500,000) in a mass fraction of In a 5% sodium hydroxide aqueous solution, make a sodium alginate solution with a mass fraction of 5%; prepare a 5% calcium chloride coagulation solution; then transfer the sodium alginate solution into a reaction kettle, stir and heat , stirring at a rate of 350r / min, heated to 85°C, and slowly adding 3-chloro-2-hydroxypropyltrimethylammonium chloride solution into the reactor, so that the sugar units on the sodium alginate chain and 3-chloro The molar ratio of -2-hydroxypropyltrimethylammonium chloride is 2:1, and the reaction is completed after stirring for 12 hours at 85°C; % calcium chloride coagulation solution, coagulated at 40°C for 30s to obtain new multifunctional superabsorbent seaweed fibers, and then after stretching, washing, winding,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Square gram weightaaaaaaaaaa
Login to View More

Abstract

The invention discloses biodegradable super-absorbent non-woven fabric. The non-woven fabric comprises, by weight, 30% to 50% of multifunctional super-absorbent alginate fibers and 50% to 70% of polylactic acid fibers in a compounded mode, and heat bonding net fixing is achieved. The non-woven fabric has the good water absorbing property, the good water retaining property, the good antibacterial property and the good biodegradability, and is mainly used for disposable hygienic products. The invention further discloses a method for preparing the multifunctional super-absorbent alginate fibers.

Description

technical field [0001] The invention relates to a biodegradable superabsorbent nonwoven fabric. The non-woven fabric is compounded by multifunctional superabsorbent seaweed fiber and polylactic acid fiber, thermally bonded and fixed, and is mainly used for disposable sanitary products. Background technique [0002] Seaweed fibers are widely used in pharmaceutical preparations, tissue engineering, clinical treatment, cell culture, food processing, and cosmetic industries due to their unique physical and chemical properties, good biocompatibility, and biodegradability. Sodium alginate is the main raw material for the preparation of alginate fiber. Alginic acid is a linear polysaccharide composed of uronic acid monomers, which contains two different structural units, namely β-D-mannuronic acid (abbreviated as M unit) and α-L-guluronic acid (abbreviated as Unit G). Sodium alginate is a white or light yellow powder that is easily soluble in water but insoluble in organic solve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01F9/04D01D5/06D01D1/02C08B37/04D04H1/4266D04H1/435
Inventor 张富山祝二斌苏文庭翁文伟向天夏
Owner FUJIAN HENGAN HLDG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com