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Preparation method of special hemp composite fibers for surface layer of paper diaper

A composite fiber, hemp fiber technology, applied in the directions of plant fiber, fiber treatment, fiber chemical characteristics, etc., can solve the problems of hemp fiber softness, poor cohesion, easy to break and other problems, and achieves good air permeability and water permeability, good flexibility The effect of sex and elasticity, soft hand feeling

Active Publication Date: 2020-01-17
管星星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a preparation method of special hemp composite fiber for the surface layer of paper diapers, which solves the existing problems of the softness of the hemp fiber in the prior art, the rigidity is relatively large, and it can be directly woven according to the textile The problem of poor cohesion and easy breakage

Method used

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  • Preparation method of special hemp composite fibers for surface layer of paper diaper
  • Preparation method of special hemp composite fibers for surface layer of paper diaper

Examples

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Effect test

Embodiment 1

[0028] A preparation method of special hemp composite fiber for paper diaper top layer, comprising the steps of:

[0029] Step 1: Crush the degummed hemp fiber into short fibers with a length less than 1 cm, soak the short fibers in hydrogen peroxide with a mass concentration of 5% for 2 hours, take them out, wash them, and dry them at a temperature of 90°C for 60 minutes to obtain pretreated hemp fibers ;

[0030] Step 2, immerse the pretreated hemp fiber in the lactide slurry and perform ultrasonic infiltration at an ultrasonic frequency of 30kHz for 2h, filter, and dry at a temperature of 40°C for 2h to obtain hemp fiber infiltrated with lactide ;

[0031] Step 3. Mix the lactide-infiltrated hemp fiber and polycaprolactone evenly in a mixer, the mass ratio of the lactide-infiltrated hemp fiber and polycaprolactone is 100:15, and then add it to the extruder Extrude into slivers at a temperature of 70°C, transfer the fiber sliver into a spinning box, spin at a temperature o...

Embodiment 2

[0035] A preparation method of special hemp composite fiber for paper diaper top layer, comprising the steps of:

[0036] Step 1, crushing the degummed hemp fiber into short fibers with a length less than 1 cm, soaking the short fibers in hydrogen peroxide with a mass concentration of 10% for 1 hour, taking them out and drying them for 30 minutes at a temperature of 100° C. to obtain pretreated hemp fibers;

[0037] Step 2, immerse the pretreated hemp fiber in the lactide slurry and perform ultrasonic infiltration at an ultrasonic frequency of 50kHz for 1h, filter, and dry at a temperature of 50°C for 1h to obtain hemp fiber infiltrated with lactide ;

[0038] Step 3: Mix the lactide-infiltrated hemp fiber and polycaprolactone uniformly in a mixer, the mass ratio of the lactide-infiltrated hemp fiber and polycaprolactone is 100:20, and then add it to the extruder Extruded into strands at a temperature of 80°C, the fiber strands were transferred to a spinning box, spun at a te...

Embodiment 3

[0042] A preparation method of special hemp composite fiber for paper diaper top layer, comprising the steps of:

[0043] Step 1: Crush the degummed hemp fiber into short fibers with a length less than 1 cm, soak the short fibers in hydrogen peroxide with a mass concentration of 8% for 1.5 hours, take them out and wash them, and dry them at a temperature of 95°C for 45 minutes to obtain pretreated hemp fiber;

[0044] Step 2, immerse the pretreated hemp fiber in the lactide slurry and perform ultrasonic infiltration at an ultrasonic frequency of 45kHz for 1.5h, filter, and dry at a temperature of 45°C for 1.5h to obtain lactide-infiltrated hemp fiber;

[0045] Step 3: Mix the lactide-infiltrated hemp fiber and polycaprolactone uniformly in a mixer, the mass ratio of the lactide-infiltrated hemp fiber and polycaprolactone is 100:20, and then add it to the extruder Extruded into strands at a temperature of 75°C, the fiber strands were transferred to a spinning box, spun at a t...

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Abstract

The invention relates to the technical field of hemp fiber modification, in particular to a preparation method of special hemp composite fibers for a surface layer of a paper diaper. The preparation method comprises the following steps: crushing degummed hemp fibers into short fibers, soaking the short fibers in hydrogen peroxide, and taking out, cleaning and drying the short fibers; immersing thepretreated hemp fibers in a lactide slurry, performing ultrasonic permeation, and carrying out filtering and drying; uniformly mixing the lactide-permeated hemp fibers and polycaprolactone in a mixer, adding the mixture into an extruder to extrude into strips, transferring the fiber strips into a spinning box for spinning, and cooling the fiber strips to obtain the special hemp composite fibers for the surface layer of the paper diaper. By the preparation method of the special hemp composite fiber for the surface layer of the paper diaper, the problems that in the prior art, hemp fibers are poor and high in rigidity, and the hemp fibers which are directly spun according to textile are poor in cohesive force and are easy to break are solved. The preparation method of the special hemp composite fibers for the surface layer of the paper diaper has the advantages of good flexibility and elasticity, soft hand feeling and good air permeability and water permeability.

Description

technical field [0001] The invention relates to the technical field of hemp fiber modification, in particular to a preparation method of special hemp composite fiber for the surface layer of a paper diaper. Background technique [0002] Hemp is one of the earliest fibers cultivated and utilized in the world. There are two types of hemp: early-maturing and late-maturing. Hemp is also called thread hemp, cloud hemp, hemp, hemp, etc. It is the fiber with the highest toughness on the earth. It only needs a small amount of water and fertilizer for its growth, without any pesticides, and can be decomposed naturally, so hemp fiber is Environmentally friendly textile raw materials. Hemp has excellent moisture absorption and perspiration performance, natural antibacterial health care performance, good softness and comfort performance, excellent anti-ultraviolet performance, excellent high-temperature resistance performance, unique wave-absorbing performance and natural rough style, ...

Claims

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Application Information

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IPC IPC(8): D06M11/50D06M15/507D01F9/00D01F1/10D06L4/13D06M101/04
CPCD06M11/50D06M15/507D01F9/00D01F1/10D06L4/13D06M2101/04
Inventor 关会堂
Owner 管星星