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Integrated self-adhesion composite core and preparation process thereof

A composite core, self-bonding technology, applied in the fields of medical science, clothing, underwear, etc., can solve the problems of low utilization rate of superabsorbent resin, poor softness of absorbent core material, low water absorption rate, etc., and achieve interlayer bonding. High strength, good anti-pilling effect and excellent absorption performance

Inactive Publication Date: 2019-11-01
佛山市合正新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the absorbent core material of this structure, the superabsorbent resin is fixed in the high-loft non-woven fabric layer or between the high-loft non-woven fabric and the cover layer, which can improve the breakage of the superabsorbent resin after absorbing urine. Cotton problem, because after the superabsorbent resin is fixed, the space available for free expansion is reduced, the utilization rate of the superabsorbent resin is low, and the water absorption rate of the absorbent core is lower than that of the traditional absorbent core
[0005] This patent discloses an integrally formed absorbent core for the problems that the first-generation absorbent core is easy to lump and break cotton, the second-generation absorbent core material has a low water absorption rate, and the first-generation absorbent core and the second-generation absorbent core material have poor softness. Adhesive-free multi-layer composite core material, the integrally formed adhesive-free multi-layer composite core material is a mixed material of multiple layers of various fibers and superabsorbent resin

Method used

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  • Integrated self-adhesion composite core and preparation process thereof
  • Integrated self-adhesion composite core and preparation process thereof
  • Integrated self-adhesion composite core and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the integrally formed self-adhesive composite core includes from top to bottom: from top to bottom including upper surface layer A1, lower surface layer A2, super absorbent resin layer A3, upper support layer A4, middle support layer A5, lower support layer A6, the superabsorbent resin layer A7, the upper base layer A8 and the lower base layer constitute A9. in:

[0036] (1) Each surface layer and each bottom layer are formed by mixing hot-melt ultra-fine short fibers and fluff pulp fibers. The fiber denier of the hot-melt ultra-fine short fibers is 0.8-2.5dtex, and the fiber length is 0.5- 10mm. Preferably the fiber denier is 1.5 dtex and the fiber length is 5 mm.

[0037] In the implementation of this example, the square gram weight of the upper surface layer and the lower bottom layer is 10-25g / m 2 , the proportion of fluff pulp fiber is 50-65%, and the rest is the proportion of hot-melt ultra-fine short fibers, and the square gram weig...

Embodiment 2

[0052] Such as figure 2 , image 3 As shown, this embodiment is a waist stick type hygroscopic product using an integrally formed self-adhesive composite core, which includes a liquid-impermeable side leakage prevention partition layer A1, a liquid-permeable top layer A2, a liquid-permeable flow guide Layer A3, integrally formed self-adhesive composite core, non-woven wrapping layer or dust-free paper wrapping layer A7, overlapping hollow area A8, thermal welding point A9 at the overlapping hollow area, liquid-tight bottom film A10, liquid-tight The bottom non-woven fabric A11, the elastic waist part A12, the front waist sticker A13, and the left and right waist stickers A14. The above layers of materials are bonded between layers by hot melt adhesive.

[0053] The integrally formed self-adhesive composite core of the present embodiment comprises an upper layer hollow absorbent core A4 and a lower layer hollow absorbent core A6, wherein the upper layer hollow absorbent core...

Embodiment 3

[0057] as attached Figure 5 As shown, the difference between this example and Example 2 is that on the basis of the implementation of Example 2, the front end and rear end of the integrally formed self-adhesive composite core are respectively provided with transverse hollow areas C15 and The transverse hollow area C16 makes the integrally formed self-adhesive composite core of this embodiment have a more excellent function of preventing front and rear leakage.

[0058] The shape of the transverse hollow area C15 and the transverse hollow area C16 in this embodiment can be crescent-shaped or linear.

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Abstract

The invention relates to an integrated self-adhesion composite core. The core comprises a composite surface layer, a high water absorption resin layer, an expansion supporting layer, a high water absorption resin layer and a composite bottom layer from top to bottom, wherein the composite surface layer consists of an upper surface layer and a lower surface layer; the composite bottom layer consists of an upper bottom layer and a lower bottom layer; each surface layer and each bottom layer are formed by hot-melt superfine short fibers and fluff pulp fibers; the expansion supporting layer consists of an upper supporting layer, a middle supporting layer and a lower supporting layer; and each supporting layer is formed by hot-melt long fibers and fluff pulp fibers. Through the thermal pressurewelding joint effect which is generated by respectively subjecting the hot-melt superfine short fibers and the hot-melt long fibers to hot melting, the layers are bonded and connected into a whole. Meanwhile, the high water absorption resin and the fluff pulp fibers are connected and fixed, so that the fixing effect on the high water absorption resin is realized, the effect that the composite core absorbs the core material without lumping and cotton breaking is realized, and the cost is greatly reduced.

Description

technical field [0001] The patent of the invention relates to the technical field of disposable absorbent articles, in particular to an integrally formed adhesive-free multi-layer composite core material. Background technique [0002] Infants, young children and other dependent persons often wear absorbent articles, such as diapers. The function of a disposable absorbent article is to contain excreta and to isolate these excreta from the wearer's body and clothing and bedding. Disposable absorbent articles, such as diapers, generally consist of a liquid topsheet, a liquid impermeable backsheet, and an absorbent and liquid containing absorbent core positioned between the liquid permeable topsheet and the liquid impermeable backsheet. [0003] The traditional first-generation absorbent core is an absorbent core structure that is uniformly mixed with fluff pulp and superabsorbent resin, and then wrapped by spray glue of the wrapping layer material. For this absorbent core, si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/536A61F13/15
CPCA61F13/15577A61F13/536A61F2013/15878A61F2013/530145A61F2013/530189A61F2013/53043A61F2013/530496
Inventor 连伟光戴艺华钟文榜黄军
Owner 佛山市合正新型材料有限公司
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