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Diaper core material with excellent absorption and air permeability and preparation method thereof

A technology of air permeability and diapers, which is applied in the field of new materials for diapers, can solve the problems of loose structure, poor air permeability, rash, etc., and achieve the effects of adsorption efficiency and performance improvement, good air permeability, and large specific surface area

Active Publication Date: 2021-12-14
HANGZHOU COCO HEALTHCARE PRODS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first-generation core is formed by mixing fluff pulp and polymer water-absorbing resin SAP. There is no layering or partitioning. Its water absorption effect is better, but the structure is relatively loose, and no adhesive is added, so the fluff pulp and SAP cannot be fixed. It is easy to cause lumps and faults
The second-generation core is a partition based on the first-generation core, which plays a certain role in fixing the fluff pulp and SAP, and reduces the phenomenon of lumping to a certain extent, but it cannot avoid the occurrence of lumps
But it still has the following disadvantages: the overall expansion of the diaper after absorbing water, its poor air permeability after absorbing water, excessive heat and humidity will cause skin rashes on the buttocks of babies and adults, and the comfort level will decrease. The present invention aims to solve this technical problem. Provided is a diaper core layer material with excellent absorption and air permeability and a preparation method thereof

Method used

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  • Diaper core material with excellent absorption and air permeability and preparation method thereof
  • Diaper core material with excellent absorption and air permeability and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A diaper core with excellent air-absorbing performance, the core includes a dust-free paper layer, a polymer layer and a non-woven fabric layer from bottom to top, the polymer layer is composed of polymer fibers with a diameter of 10-20 μm, and Formed by parallel stacking, at least 80% of the polymer fibers are longer than 2.5cm;

[0034] The polymer is 100% polymer water-absorbing resin, specifically grafted cellulose.

[0035] The preparation method of the diaper core with excellent absorption and air permeability in Example 1 is based on the parallel stacking method of hot-melt equipment, and the hot-melt equipment includes: a base 1, a hot-melt chamber 2 with a heating mechanism, a temperature sensor 3, a drive Shaft 4, drive motor 5 and control mechanism 6, hot melt cavity 2 is fixedly arranged on the power output end of drive shaft 4, drive shaft 4 is connected with base 1 in rotation, and the power input end of drive shaft 4 is connected with the power output end...

Embodiment 2

[0043]A diaper core with excellent air absorption and air permeability, the core includes a dust-free paper layer, a polymer layer and a non-woven fabric layer from bottom to top, the polymer layer is composed of polymer fibers with a diameter of 30-40 μm, and The combination of radial cross stacking and parallel stacking is formed, and the length of 85% of the polymer fibers is greater than 2.5 cm; the polymer is 100% polymer water-absorbing resin, and the polymer water-absorbing resin is carboxymethylated cellulose.

[0044] The preparation method of the diaper core with excellent absorption and air permeability of Example 2 is based on the combination of radial cross-stacking and parallel stacking of hot-melt equipment, and the hot-melt equipment includes:

[0045] Base 1, hot melt chamber 2 with heating mechanism, temperature sensor 3, drive shaft 4, drive motor 5 and control mechanism 6, hot melt chamber 2 is fixed on the power output end of drive shaft 4, drive shaft 4 an...

Embodiment 3

[0053] The core body of diapers with excellent absorption and air permeability, the core body includes a dust-free paper layer, a polymer layer and a non-woven fabric layer from bottom to top, and the diameter of the polymer fibers is 50-60 μm, stacked in a radial cross Combined with parallel stacking, the length of at least 90% of the polymer fibers is greater than 2.5 cm; the weight percentage of the polymer is: 98% polymer water-absorbing resin, 2% hot melt adhesive. The polymer water-absorbing resin is hydroxypropylated cellulose;

[0054] Its preparation method: based on the combination of radial cross stacking and parallel stacking of hot-melt equipment, the hot-melt equipment includes: base 1, hot-melt chamber 2 with heating mechanism, temperature sensor 3, drive shaft 4, drive motor 5 And the control mechanism 6, the hot melt chamber 2 is fixed on the power output end of the drive shaft 4, the drive shaft 4 is connected to the base 1 in rotation, the power input end of...

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Abstract

The invention relates to a diaper core layer material with excellent air-absorbing performance and a preparation method thereof. The core body includes a dust-free paper layer, a polymer layer and a non-woven fabric layer from bottom to top, and the polymer layer consists of a diameter Polymer fibers of 10-100 μm, shaped in parallel stacks or a combination of radially crossed stacks and parallel stacks, at least 80% of the polymer fibers are longer than 2.5 cm; said polymers contain at least 95% polymeric water-absorbent resin . The polymer water-absorbent resin of the present invention is set in the core body in the form of microfibers. First, the specific surface area of ​​the microfibers is large, and the adsorption efficiency and performance are significantly improved. In addition, several disordered bridging structures are formed between the microfibers. There are multiple air-permeable channels, and the air-permeability is good. In addition, the microfiber has good uniformity, and after absorbing water, it expands as a whole, and it is flat and not easy to stomp. At the same time, it has good air-permeability, which greatly improves the comfort.

Description

technical field [0001] The invention relates to a diaper core layer material with excellent absorption and air permeability and a preparation method thereof, belonging to the technical field of new diaper materials. Background technique [0002] Modern diapers generally consist of three parts in terms of structure: surface cover layer, absorbent core layer and bottom layer. The core is called the heart of diapers, and the quality of diapers with different cores varies greatly. The first-generation core is formed by mixing fluff pulp and polymer water-absorbing resin SAP. There is no layering or partitioning. Its water absorption effect is better, but the structure is relatively loose, and no adhesive is added, so the fluff pulp and SAP cannot be fixed. It is easy to cause lumps and faults. The second-generation core is a partition based on the first-generation core, which plays a certain role in fixing the fluff pulp and SAP, and reduces the phenomenon of lumping to a cert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/53
CPCA61F13/53A61F2013/530226
Inventor 唐伟金利伟王旭陈思孔宋华张春娥陈锴鲍益平裘向阳周黎峰
Owner HANGZHOU COCO HEALTHCARE PRODS