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Preparation method of gradient elastic waist for paper diapers with one-way moisture transfer function

A one-way moisture-guiding and elastic waistline technology, applied in the field of baby hygiene products, can solve the problems of easy sultry sweating, poor air permeability, etc., and achieve the effect of simple process and thin thickness

Active Publication Date: 2022-05-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The waistline of traditional diapers adds several elastic / spandex filaments to the non-woven fabric to provide elasticity, and uses glue to bond the elastic / spandex filaments to the non-woven fabric, which has poor air permeability and is prone to stuffiness and sweating. prone to deep indentations

Method used

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  • Preparation method of gradient elastic waist for paper diapers with one-way moisture transfer function
  • Preparation method of gradient elastic waist for paper diapers with one-way moisture transfer function
  • Preparation method of gradient elastic waist for paper diapers with one-way moisture transfer function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of a diaper with a unidirectional wet-guiding function of a gradient elastic waistline, the specific steps are:

[0039] The first step: add the hydrophobic agent amino silicone oil to the solvent N,N-dimethylformamide, stir evenly, and then add the polyurethane to obtain a hydrophobic polyurethane spinning with a mass fraction of amino silicone oil of 2% and a mass fraction of polyurethane of 10%. Silk dope; the hydrophobic polyurethane spinning dope was spun by an electrospinning device to prepare a hydrophobic fiber membrane with an average pore size of 3.0 μm. The spinning temperature was 26.5°C, the relative humidity was 65%, and the voltage was 40kV. The distance is 20cm, the perfusion speed of the spinning solution is 3ml / h, the obtained fiber diameter is 800nm, and the distance of the sliding table is adjusted step by step from large to small in the spinning process (40cm, 35cm, 30cm, 25cm, 20cm, 15cm, 10cm, 5cm, 0cm) to prepare a fibrous me...

Embodiment 2

[0044] A preparation method of a diaper with a unidirectional wet-guiding function of a gradient elastic waistline, the specific steps are:

[0045] The first step: add the hydrophobic agent cetyltrimethoxysilane to the solvent N,N-dimethylformamide, stir evenly, and then add the polyurethane to obtain a mass fraction of cetyltrimethoxysilane of 3% , a hydrophobic polyurethane spinning dope with a polyurethane mass fraction of 10%; the hydrophobic polyurethane spinning dope was spun by an electrospinning device to prepare a hydrophobic fiber membrane with an average pore size of 2.2 μm, and the spinning temperature was 26.5 ℃ , the relative humidity is 80%, the voltage is 50kV, the receiving distance is 20cm, the perfusion speed of the spinning solution is 3ml / h, the obtained fiber diameter is 700nm, and the distance of the slide table is adjusted step by step from large to small during the spinning process (40cm, 35cm, 30cm, 25cm, 20cm, 15cm, 10cm, 5cm, 0cm) to prepare a fibr...

Embodiment 3

[0050] A preparation method of a diaper with a unidirectional wet-guiding function of a gradient elastic waistline, the specific steps are:

[0051] The first step: add the hydrophobic agent polydimethylsiloxane into the solvent N,N-dimethylformamide, stir evenly, and then add the polyurethane to obtain a polydimethylsiloxane with a mass fraction of 3% and a polyurethane The hydrophobic polyurethane spinning stock solution with a mass fraction of 15%; the hydrophobic polyurethane spinning stock solution was spun by an electrospinning device to prepare a hydrophobic fiber membrane with an average pore size of 2.5 μm, and the spinning temperature was 26.5 °C, relative to The humidity is 85%, the voltage is 50kV, the receiving distance is 20cm, the perfusion speed of the spinning solution is 3ml / h, the diameter of the obtained fiber is 850nm, and the distance of the sliding table is adjusted step by step from large to small during the spinning process (30cm, 25cm, 20cm, 15cm, 10c...

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Abstract

The invention provides a method for preparing a gradient elastic waistline for paper diapers with one-way moisture guide function, which is characterized in that it comprises the following steps: the first step: using an electrostatic spinning device to prepare a hydrophobic polyurethane spinning stock solution Fiber membrane; the second step: using the hydrophobic fiber membrane prepared in the first step as the base, using an electrospinning device, the hydrophilic polyurethane spinning stock solution is prepared into a hydrophilic fiber membrane, and a composite fiber membrane with unidirectional moisture-wicking function is obtained The third step is to cut the above-mentioned composite fiber film with unidirectional moisture-wicking function into strips with a thin top and a thick bottom, as a gradient elastic waistline for paper diapers with unidirectional moisture-wicking function. The gradient elastic waistline for diapers prepared by the invention is directly prepared by an electrospinning process, the process is simple, and the gradient elastic thickness is relatively thin, soft and comfortable.

Description

technical field [0001] The invention belongs to the field of baby hygiene products, and particularly relates to a gradient elastic waistline for paper diapers with unidirectional moisture guiding function and a preparation method thereof. Background technique [0002] The market share of baby diapers is increasing year by year due to their advantages of being easy to carry and disposable. At present, the penetration rate of baby diapers in Europe, America, Japan and South Korea is close to 100%, while the penetration rate of diapers in China is only 60%, and its market demand maintains a rapid growth of 17%. Baby skin is thin, only one-tenth the thickness of adult skin, and some slight irritation or discomfort may make the baby's skin congested or damaged. Therefore, the extensive use of diapers is accompanied by concerns about its comfort and functionality . [0003] In traditional diapers, several elastic bands / spandex yarns are added to the non-woven fabric to provide e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/56A61L15/18A61L15/20A61L15/26
CPCA61F13/5655A61L15/26A61L15/18A61L15/20C08L75/04
Inventor 王先锋刘高慧缪东洋丁彬俞建勇
Owner DONGHUA UNIV
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