Extensible ultrathin water-absorbing core body

Abstract

The utility model relates to the technical field of paper diaper water absorption cores, in particular to an extensible ultra-thin water absorption core. According to the technical scheme, the inner core comprises an inner core body and supporting fibers, the inner core body is of a multi-layer structure, the supporting fibers penetrate through the inner core body and are distributed in the inner core body in a corrugated mode, skin-friendly fabric and waterproof fabric are arranged on the upper side and the lower side of the inner core body respectively, and a water locking filling layer is arranged in the middle of the inner core body. Elastic combined cloth is arranged on the water locking filling layer at equal intervals, the adjacent elastic combined cloth is fixed through an easily-broken film, and the supporting fibers penetrate through the elastic combined cloth. The easily-broken supporting fibers in the inner core body are distributed in a corrugated mode, the stretching capacity of the inner core body can be improved during extension, the risk of breakage is reduced, meanwhile, after extension, the easily-broken film can be supported to be broken, the inner core body does not have large elastic tightening, and comfort reduction caused by excessive tightening is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of diaper water-absorbing cores, in particular to an extensible ultra-thin water-absorbing core. Background Art

[0002] The core of a diaper is usually made of materials such as highly absorbent polymers and cellulose, and its purpose is to absorb and retain urine and keep the baby dry. Although the core of a diaper has a certain degree of ductility, its ductility is limited by the characteristics of the core material and the structural design. Generally speaking, the core of a diaper has a certain degree of stretchability and can adapt to the baby's body shape changes and activities. However, excessive stretching may cause the core to rupture or lose its water absorption performance, affecting its use effect.

[0003] During use, cellulose materials are relatively more prone to breakage because cellulose materials are usually the supporting structure of the inner core of diapers. They may easily break when subjected to large tensile force or extrusion. During use, the supporting fibers are used to fix and lock the various functional layers of the core, so their elasticity is relatively weak, and therefore they are prone to breakage when stretched. Common high-extensibility cores are mainly made of elastic materials, so after stretching, when elastic restoration occurs, they will become tighter, resulting in a decrease in comfort. Their main surface is to increase the wearing restraint of the diaper after absorbing water and swelling and stretching. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and to provide an extensible ultra-thin water-absorbing core.

[0005] The technical solution of the utility model is: a stretchable ultra-thin water-absorbent core, comprising an inner core body and supporting fibers, wherein the inner core body is a multi-layer structure, the supporting fibers pass through the inner core body and are arranged in a corrugated manner within the inner core body, the upper and lower sides of the inner core body are respectively made of skin-friendly fabric and waterproof fabric, the middle position of the inner core body is a water-locking filling layer, the water-locking filling layer is equidistantly provided with elastic combination fabrics, adjacent elastic combination fabrics are fixed by an easy-to-break film, and the supporting fibers pass through the elastic combination fabric.

[0006] Preferably, a guide fiber layer is arranged between the skin-friendly fabric and the water-locking filling layer, and a breathable fiber layer is arranged between the waterproof fabric and the water-locking filling layer. The guide fiber layer can quickly drain urine into the water-locking filling layer, and the breathable fiber layer can increase the breathability of the entire inner core body.

[0007] Preferably, the easily-breakable film is provided with fracture openings at the middle positions of the upper and lower sides, and the easily-breakable film can be made to break more easily by utilizing the fracture openings.

[0008] Preferably, a virtual and real connecting line is provided in the middle of the easily-breakable film to reduce the connection support capacity of the easily-breakable film so that it can break at a designated position.

[0009] Compared with the prior art, the utility model has the following beneficial technical effects: the easily broken supporting fibers in the inner core body are arranged in a corrugated distribution, which can increase its tensile capacity and reduce the risk of breakage during extension; at the same time, after extension, the easily broken membrane can be broken, so that the inner core body will not have a large elastic tightening, thereby avoiding a decrease in comfort caused by excessive tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the cross-sectional structure of the inner core body of the utility model;

[0011] Figure 2 This is a schematic diagram of the combined structure of the support fiber and the elastic combined fabric of the utility model;

[0012] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0013] Figure 4 It is a schematic diagram of the overall appearance structure of the utility model.

[0014] Figure numerals: 1. Inner core body; 11. Skin-friendly fabric; 12. Guide fiber layer; 13. Water-locking filling layer; 14. Breathable fiber layer; 15. Waterproof fabric; 2. Support fiber; 3. Elastic combination fabric; 4. Easy-to-break membrane; 41. Fracture; 42. Virtual-real connecting line. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] Example

[0017] like Figure 1-4 As shown, the utility model proposes a stretchable ultra-thin water-absorbent core, including an inner core body 1 and supporting fibers 2. The inner core body 1 is a multi-layer structure. The supporting fibers 2 pass through the inner core body 1 and are arranged in a corrugated manner in the inner core body 1. The upper and lower sides of the inner core body 1 are respectively provided with a skin-friendly fabric 11 and a waterproof fabric 15. The middle position of the inner core body 1 is a water-locking filling layer 13. The water-locking filling layer 13 is equidistantly provided with elastic combination fabrics 3. Adjacent elastic combination fabrics 3 are fixed by easy-to-break films 4. The supporting fibers 2 pass through the elastic combination fabrics 3. When the water-locking filling layer 13 absorbs water and expands, the elastic combination fabrics 3 will be stretched. In this process, once the pulling force is greater than the supporting capacity of the easy-to-break film 4, it will directly cause it to break. After breaking, no elastic restoration will occur, or the strength of the elastic restoration will be reduced.

[0018] A flow-guiding fiber layer 12 is arranged between the skin-friendly fabric 11 and the water-locking filling layer 13 , and a breathable fiber layer 14 is arranged between the waterproof fabric 15 and the water-locking filling layer 13 .

[0019] In order to make the breakable film 4 break more easily and ensure that it breaks at a designated position, break openings 41 are provided in the middle of the upper and lower sides of the breakable film 4, and a virtual-real connection line 42 is provided in the middle of the breakable film 4.

[0020] In this embodiment, the elastic composite fabric 3 is first clamped between the water-locking filling layers 13, and then the guide fiber layer 12 and the skin-friendly fabric 11 are sequentially covered on top thereof, and the breathable fiber layer 14 and the waterproof fabric 15 are sequentially laid underneath thereof, and finally the supporting fibers 2 are used for stitching and fixing. During the stitching process, the serpentine distribution of the supporting fibers 2 is ensured, so that when pulled and stretched, the supporting fibers 2 can be better extended to reduce the risk of breakage, and when the water-locking filling layer 13 expands due to water absorption, the elastic composite fabric 3 will be stretched. During this process, once the pulling force is greater than the supporting capacity of the easily-breakable membrane 4, it will directly cause it to break, and after breaking, no elastic restoration will occur, or the strength of the elastic restoration will be reduced, thereby reducing the increase in binding force caused by water absorption and expansion, and will not cause discomfort to wearing due to tightening.

[0021] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An extensible ultra-thin water-absorbent core, comprising an inner core body (1) and supporting fibers (2), characterized in that: The inner core body (1) is a multi-layer structure, the supporting fibers (2) pass through the inner core body (1) and are arranged in a corrugated manner inside the inner core body (1), the upper and lower sides of the inner core body (1) are respectively provided with a skin-friendly fabric (11) and a waterproof fabric (15), the middle position of the inner core body (1) is a water-locking filling layer (13), the water-locking filling layer (13) is equidistantly provided with elastic combination fabrics (3), adjacent elastic combination fabrics (3) are fixed by an easily breakable film (4), and the supporting fibers (2) pass through the elastic combination fabric (3).

2. The extensible ultra-thin water-absorbent core according to claim 1, characterized in that: A flow-guiding fiber layer (12) is provided between the skin-friendly fabric (11) and the water-locking filling layer (13), and a breathable fiber layer (14) is provided between the waterproof fabric (15) and the water-locking filling layer (13).

3. The extensible ultra-thin water-absorbent core according to claim 1, characterized in that: The breakable film (4) is provided with break openings (41) at the middle positions of the upper and lower sides.

4. The extensible ultra-thin water-absorbent core according to claim 1, characterized in that: A virtual and real connecting line (42) is provided in the middle of the easily-broken film (4).

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