Preparation method of gradually-changed elastic waistband for paper diapers with unidirectional moisture-conducting function

A technology of one-way moisture guide and elastic waist, which is applied in the field of baby hygiene products, can solve the problems of poor air permeability, easy to be stuffy and sweaty, etc., and achieve the effect of gradual elastic thin thickness and simple process

Active Publication Date: 2019-08-20
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 t

Method used

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  • Preparation method of gradually-changed elastic waistband for paper diapers with unidirectional moisture-conducting function
  • Preparation method of gradually-changed elastic waistband for paper diapers with unidirectional moisture-conducting function
  • Preparation method of gradually-changed elastic waistband for paper diapers with unidirectional moisture-conducting function

Examples

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Example Embodiment

[0037] Example 1

[0038] A method for preparing a gradual elastic waistline for diapers with a one-way wetness function, 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 polyurethane to obtain a hydrophobic polyurethane spinning with an amino silicone oil mass fraction of 2% and a polyurethane mass fraction of 10%. Silk dope: Use an electrostatic spinning device to spin the hydrophobic polyurethane spinning dope to prepare a hydrophobic fiber membrane with an average pore diameter of 3.0μm. The spinning temperature is 26.5°C, the relative humidity is 65%, and the voltage is 40kV. The distance is 20cm, the perfusion speed of the spinning solution is 3ml / h, and the diameter of the fiber obtained is 800nm. During the spinning process, adjust the sliding table distance step by step (40cm, 35cm, 30cm, 25cm, 20cm, 15cm, 10cm, 5cm, 0cm) to prepare a fiber membrane with a thicknes...

Example Embodiment

[0043] Example 2

[0044] A method for preparing a gradual elastic waistline for diapers with a one-way wetness function, the specific steps are:

[0045] The first step: add the hydrophobizing agent hexadecyltrimethoxysilane to the solvent N,N-dimethylformamide, stir evenly, and then add polyurethane to obtain the cetyltrimethoxysilane with a mass fraction of 3% , A hydrophobic polyurethane spinning dope with a polyurethane mass fraction of 10%; using an electrostatic spinning device to spin the hydrophobic polyurethane spinning dope to prepare a hydrophobic fiber membrane with an average pore diameter of 2.2μm, and the spinning temperature is 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, and the fiber diameter is 700nm. During the spinning process, the sliding table distance (40cm, 35cm, 30cm, 25cm, 20cm, 15cm, 10cm, 5cm, 0cm) to prepare a fiber membrane with a thickness gradient,...

Example Embodiment

[0049] Example 3

[0050] A method for preparing a gradual elastic waistline for diapers with a one-way wetness function, the specific steps are:

[0051] The first step: add the hydrophobic agent polydimethylsiloxane to the solvent N,N-dimethylformamide, stir evenly, and then add polyurethane to obtain a polydimethylsiloxane mass fraction of 3%, polyurethane The hydrophobic polyurethane spinning dope with a mass fraction of 15%; the hydrophobic polyurethane spinning dope is spun by an electrospinning device to prepare a hydrophobic fiber membrane with an average pore diameter of 2.5μm. The spinning temperature is 26.5℃. The humidity is 85%, the voltage is 50kV, the receiving distance is 20cm, the perfusion speed of the spinning solution is 3ml / h, and the resulting fiber diameter is 850nm. During the spinning process, the distance of the sliding table is adjusted step by step (30cm, 25cm, 20cm, 15cm, 10cm, 5cm, 0cm) to prepare a fiber membrane with a thickness gradient, the thickn...

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Abstract

The invention provides a preparation method of a gradually-changed elastic waistband for paper diapers with unidirectional moisture-conducting function. The preparation method is characterized in thatthe preparation method includes the following steps: step 1, preparing hydrophobic polyurethane spinning solution into hydrophobic fiber membranes by an electrospinning device; step 2, using the hydrophobic fiber membranes prepared in the step 1 as substrates, and preparing hydrophilic polyurethane spinning solution into hydrophilic fiber membranes by using the electrospinning device, thereby obtaining composite fibre membranes with unidirectional moisture-conducting function; and step 3, cutting the above-mentioned composite fiber membranes with unidirectional moisture-conducting function into bands with upper part thin and lower part thick as the gradually-changed elastic waistband for paper diapers with unidirectional moisture-conducting function. The gradually-changed elastic waistband for paper diapers prepared by the invention is directly prepared by electrospinning process. The process is simple, and the gradually-changed elastic waistband is relatively thin in thickness and soft and comfortable.

Description

technical field [0001] The invention belongs to the field of baby hygiene products, and in particular relates to a gradient elastic waistline for paper diapers with one-way moisture guide function and a preparation method thereof. Background technique [0002] The market share of baby diapers has increased 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, South Korea and other countries is close to 100%, while the penetration rate of diapers in China is only 60%, and its market demand maintains a high-speed growth of 17%. Babies have thin skin, 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 attention to their comfort and functionality . [0003] The waistline of traditional diapers adds several elastic / spandex filaments to the non-w...

Claims

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Application Information

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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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