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High-strength composite core, preparation method thereof and application of high-strength composite core in baby diapers

A high-strength, composite core technology, applied in applications, baby underwear, medical science, etc., can solve the problems of large usage, poor aging resistance, discomfort, etc., achieve high fiber cross-sectional diameter, strong aging resistance, and non-toxic easy to break effect

Active Publication Date: 2020-11-13
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The composite absorbent core used in existing diapers is usually composed of a surface layer, a superabsorbent resin layer, a fluffy cloth in the middle, a superabsorbent resin layer, and a bottom layer. The five layers are fixed together by hot melt adhesive, which has poor absorption , The low utilization rate of superabsorbent resin leads to problems such as large amount of use and poor diffusibility, especially when the baby has a large amount of urine or a large amount of activity, and the diaper product has a large amount of reverse osmosis during use, which is easy to cause The product is poor in strength and toughness, resulting in fiber breakage, and is uncomfortable due to the large amount of superabsorbent resin used, and is prone to quality accidents such as side leakage. The composite absorbent core uses a large amount of hot melt adhesive, which is not highly used for superabsorbent resin and is resistant to aging. Poor performance, poor breathability and moisture permeability, and complicated process, so it is very important to develop a diaper composite core with high strength, long shelf life, good absorption performance, and low reverse osmosis

Method used

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  • High-strength composite core, preparation method thereof and application of high-strength composite core in baby diapers
  • High-strength composite core, preparation method thereof and application of high-strength composite core in baby diapers

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preparation example Construction

[0037] figure 1 It is a method flowchart of a method for preparing a high-strength composite core shown according to an exemplary embodiment, such as figure 1 Shown, the preparation method of this high-strength type composite core comprises:

[0038] Step (1): Feed the ES fiber and high-crimp fiber with special-shaped cross-section through two bale opening machines respectively according to the weight ratio of 1:1, and form a horizontal fiber web through the processes of opening and mixing, air-flow feeding, carding, and doffer stripping , and then the horizontal fiber web is fed into the vertical web lapper through the cotton guide roller and the cotton feeding plate, and the horizontal fiber web is periodically oscillated up and down in the vertical direction by the rocking cotton rod and folded into an inverted Z-shaped continuous fiber web .

[0039] Optionally, the ES fiber is a hydrophilic PE / PP fiber, the fiber fineness of the ES fiber is 8-10D, the length is 50-52mm,...

Embodiment 1

[0057]Step (1): Feed the ES fiber and high-crimp fiber with special-shaped cross-section through two bale opening machines respectively according to the weight ratio of 1:1, and form a horizontal fiber web through the processes of opening and mixing, air-flow feeding, carding, and doffer stripping , and then the horizontal fiber web is fed into the vertical web lapper through the cotton guide roller and the cotton feeding plate, and the horizontal fiber web is periodically oscillated up and down in the vertical direction by the rocking cotton rod and folded into an inverted Z-shaped continuous fiber web .

[0058] The ES fiber is a hydrophilic PE / PP fiber, the fiber fineness of the ES fiber is 8D, the length is 50mm, and the number of crimps is 580 / m.

[0059] The highly crimped fiber with special-shaped cross-section is a hydrophilic PTT fiber with C-shaped cross-section. The fiber fineness of the highly crimped fiber with special-shaped cross-section is 20D, the length is 64...

Embodiment 2

[0074] Step (1): Feed ES fiber and highly crimped fiber with special-shaped cross-section through two bale opening machines respectively according to the weight ratio of 40:60, and form a horizontal fiber web through the processes of opening and mixing, air-flow feeding, carding, and doffer stripping , and then the horizontal fiber web is fed into the vertical web lapper through the cotton guide roller and the cotton feeding plate, and the horizontal fiber web is periodically oscillated up and down in the vertical direction by the rocking cotton rod and folded into an inverted Z-shaped continuous fiber web .

[0075] The ES fiber is a hydrophilic PE / PP fiber, the fiber fineness of the ES fiber is 9D, the length is 51mm, and the number of crimps is 590 / m.

[0076] The highly crimped fiber with a special-shaped cross section is a hydrophilic PTT fiber with a C-shaped cross-section. The fiber fineness of the highly crimped fiber with a special-shaped cross-section is 20D, the len...

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Abstract

The invention discloses a high-strength composite core, a preparation method thereof and application of the high-strength composite core in baby diapers, and relates to the technical field of disposable hygienic products. According to the high-strength composite core and the preparation method thereof, through compounding of PP / PE double-component filament fibers and a high-strength composite fiber net, selection of raw materials of high-crimpness C-type coarse-denier hydrophilic PTT fibers and reasonable matching and common use of super absorbent resin and wood pulp fibers, a processing modeof firstly carrying out thermal hardening and then spraying super absorbent resin / wood pulp mixed powder, innovative design of processing technological parameters, the prepared high-strength compositecore has good toughness, aging resistance, air permeability, moisture penetrability and comfort; the composite core has the advantages of being long in diffusion length, free of hot melt adhesive, high in SAP utilization rate and good in absorption capacity, compared with an existing composite core, the use amount of SAP can be further reduced, and when the composite core is applied to preparation of baby diapers, the fault phenomenon caused by the large amount of urine or the large amount of exercise of babies can be avoided.

Description

technical field [0001] The invention relates to the technical field of disposable sanitary products, in particular to a high-strength composite core, a preparation method thereof and an application in baby diapers. Background technique [0002] Diapers are mainly composed of three parts: surface non-woven fabric, middle composite core absorbent layer and bottom impermeable film. Among them, composite core is the most important absorption function structure of diapers, and its preparation method greatly affects the quality of diapers. Comprehensive performance. [0003] The preparation method of existing composite absorbent core generally comprises the following several kinds: [0004] Patent CN201911180880.4 relates to the technical field of composite core material preparation, including hot-melt coarse-denier fiber webs and hot-melt fine-denier fiber webs, and a hot-melt fine-denier fiber web is provided below the hot-melt coarse-denier fiber webs; The hot-melt coarse den...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/15A61F13/53
CPCA61F13/15617A61F13/15804A61F13/53A61F2013/15821A61F2013/15861A61F2013/530131A61F2013/530189A61F2013/530496
Inventor 叶心彤钱程方瑞峰韩万里
Owner JIAXING UNIV
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