CN110680620A - 3D composite core body for hygienic product - Google Patents

Abstract

A 3D composite core for a hygiene article, comprising: dustless paper, absorb water layer and parcel are outside water conservancy diversion non-woven fabrics, the layer that absorbs water set up in two-layerly between the dustless paper, the layer that absorbs water including the polymer absorb water quality and non-woven fabrics, the non-woven fabrics surface form three-dimensional accommodation area, the polymer absorb water quality fill at least in three-dimensional accommodation area. This core promotes the effective veneer area who absorbs water quality through setting up the non-woven fabrics that has three-dimensional accommodation area to this reduces the thickness that absorbs water the core.

Description

A 3D composite core for sanitary products

technical field

The invention relates to the technical field of feminine hygiene products, in particular to a composite core for absorption.

Background technique

The composite core is an absorbent material, and the main material is a high molecular polymer and a high molecular polymer composite paper formed by cotton, non-woven fabric, pulp or a composite of the above materials. In the existing inner core such as sanitary napkins, the water-absorbing polymer is attached to a flat non-woven fabric layer through composite glue. The water-absorbing water is generally polymer resin, but the polymer resins have poor adhesion to each other. Once a large amount of water is absorbed, the polymer resin will move with the water flow. When the human body is in use, it is not placed horizontally, so if the diaper is used for a period of time, some areas will absorb more water, and the water absorption of the entire diaper will become worse, that is, because the absorbing water begins to flow, resulting in no water absorption The water absorption of the quality part becomes poor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a 3D composite core for sanitary products. The present invention increases the effective gluing area of water-absorbing water by providing a non-woven fabric with a three-dimensional accommodating area, thereby reducing the thickness of the water-absorbing core.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a 3D composite core for sanitary products, comprising: a clean paper, a water-absorbing layer, and a non-woven flow-guiding nonwoven wrapped on the outside, the water-absorbing The layer is arranged between the two layers of the dust-free paper, the water-absorbing layer includes a polymer absorbing water and a non-woven fabric, the surface of the non-woven fabric forms a three-dimensional accommodating area, and the polymer absorbing water is filled at least in the in the three-dimensional receiving area.

As a preference of the present invention, the surface of the non-woven fabric is formed with wave-shaped folds, and the three-dimensional accommodation area is an area formed by the depressions of the wave-shaped folds on the surface of the non-woven fabric.

As a preference of the present invention, the gram weight of the polymer absorbing water in the three-dimensional accommodation area is greater than half of the total gram weight of the polymer absorbing water.

As a preference of the present invention, the distance between the peaks or troughs of the non-woven fabric and the dust-free paper is no more than 2-5 cm.

As a preference of the present invention, the thickness of the non-woven fabric is twice that of the dust-free paper.

As a preference of the present invention, the water absorbing water is a polymer water absorbing resin.

As a preferred option of the present invention, the surface of the non-woven fabric is provided with an adhesive layer, and the adhesive layer is glued with the surface of the polymer water-absorbing.

As a preference of the present invention, a water-locking layer is arranged between the water-absorbing layer and the dust-free paper, and the water-locking layer is made of polymer water-absorbing resin mixed with wood pulp.

To sum up, the present invention has the following beneficial effects:

The invention uses the wavy wrinkled non-woven fabric to change the storage space of water absorption, fundamentally solves the problem that the water absorption is easy to move, and ensures the uniform water absorption contained in each unit area of the entire sanitary napkin, thereby improving the performance of the sanitary napkin. The water absorption of the whole sanitary napkin prolongs the use time.

And because the shape of the non-woven fabric becomes a wave-shaped fold, its own physical elasticity is enhanced, the entire inner core has better elasticity, and the comfort is improved.

Description of drawings

1 is a schematic structural diagram of a first embodiment of the present invention;

2 is a schematic structural diagram of a second embodiment of the present invention;

In the picture:

1-dust-free paper; 2-water-absorbing layer; 2-1-polymer water-absorbing water; 2-2-non-woven fabric; 3-three-dimensional accommodation area; 4-flow non-woven fabric; 5-water-locking layer.

Detailed ways

In order to facilitate an understanding of the present invention, the core of a sanitary napkin will be described more fully below with reference to the associated drawings. Preferred embodiments of the core of the sanitary napkin are shown in the accompanying drawings. However, the core of a sanitary napkin can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these examples are provided so that the disclosure of composite core sanitary napkins will be thorough and complete.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the core of the sanitary napkin is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The present invention will be further described in detail below with reference to the accompanying drawings.

Example 1:

As shown in FIG. 1 , in the embodiment of the present invention, the dust-free paper 1, the water-absorbing layer 2, and the non-woven fabric 4 wrapped around the outside, the water-absorbing layer 2 is arranged between the two layers of the dust-free paper 1, and the water-absorbing layer 2 includes a high The molecular absorbing water 2-1 and the non-woven fabric 2-2, the surface of the non-woven fabric 2-2 forms a three-dimensional receiving area 3, the polymer absorbing water 2-1 is filled at least in the three-dimensional receiving area 3, and the polymer absorbing water 2- 1 is also attached to the surface of the non-woven fabric 2-2 outside the three-dimensional receiving area 3. The surface of the non-woven fabric 2-2 is provided with an adhesive layer, and the adhesive layer is glued with the polymer water absorbing water 2-1. The surface of the non-woven fabric 2-2 is formed with wavy folds, and the three-dimensional accommodation area 3 is an area formed by the depressions of the wavy folds on the surface of the non-woven fabric 2-2. The distance between the peaks or troughs of the non-woven fabric 2-2 and the dust-free paper 1 is not more than 2 cm. The gram weight of the polymer water absorbing water 2-1 in the three-dimensional accommodating area 3 is greater than half of the total gram weight of the polymer absorbing water 2-1. The thickness of the non-woven fabric 2-2 is twice that of the dust-free paper 1 . The polymer water absorbing water 2-1 is a polymer water absorbing resin, which is a new type of functional polymer material. It has a high water absorption function of absorbing water hundreds to thousands of times heavier than itself, and has excellent water retention performance. Once it absorbs water and swells into a hydrogel, it is difficult to separate the water even if it is pressurized. Therefore, it is widely used in various fields such as personal hygiene products, industrial and agricultural production, civil construction and so on. The polymer water-absorbent resin is generally a polymer electrolyte containing a hydrophilic group and a cross-linked structure.

Embodiment 2

As shown in FIG. 2 , in the embodiment of the present invention, the dust-free paper 1, the water-absorbing layer 2, and the non-woven fabric 4 wrapped around the outside, the water-absorbing layer 2 is arranged between the two layers of the dust-free paper 1, and the polymer water-absorbing layer 2 Including water absorbing water 2-1 and non-woven fabric 2-2, the surface of non-woven fabric 2-2 forms a three-dimensional receiving area 3, the polymer water absorbing water 2-1 is filled at least in the three-dimensional receiving area 3, while the polymer water absorbing water 2- 1 is also attached to the surface of the non-woven fabric 2-2 outside the three-dimensional receiving area 3. The surface of the non-woven fabric 2-2 is provided with an adhesive layer, and the adhesive layer is glued with the polymer water absorbing water 2-1. The surface of the non-woven fabric 2-2 is formed with wave-shaped folds, and the three-dimensional accommodation area 3 is an area formed by the depressions of the wave-shaped folds on the surface of the non-woven fabric 2-2. The distance between the peaks or troughs of the non-woven fabric 2-2 and the dust-free paper 1 is not more than 5 cm. The gram weight of the polymer water absorbing water 2-1 in the three-dimensional accommodating area 3 is greater than half of the total gram weight of the polymer absorbing water 2-1. The thickness of the non-woven fabric 2-2 is twice that of the dust-free paper 1 . The polymer water absorbing water 2-1 is a polymer water absorbing resin. A water-locking layer 5 is arranged between the water-absorbing layer 2 and the dust-free paper 1, and the water-locking layer 5 is made of polymer water-absorbing resin mixed with wood pulp.

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Claims (8)

1. A 3D composite core for a hygiene article, comprising: dustless paper (1), absorb water layer (2) and parcel are outside water conservancy diversion non-woven fabrics (4), absorb water layer (2) set up two-layerly between dustless paper (1), its characterized in that: the water absorption layer (2) comprises high-molecular water absorption (2-1) and non-woven fabrics (2-2), a three-dimensional containing area (3) is formed on the surface of the non-woven fabrics (2-2), and the high-molecular water absorption (2-1) is at least filled in the three-dimensional containing area (3).

2. A 3D composite core for a sanitary product according to claim 1, wherein: the surface of the non-woven fabric (2-2) forms wavy folds, and the three-dimensional containing area (3) is an area formed at the concave position of the wavy folds on the surface of the non-woven fabric (2-2).

3. A 3D composite core for a sanitary product according to claim 2, wherein: the gram weight of the high polymer water absorption quality (2-1) in the three-dimensional containing area (3) is more than half of the total gram weight of the high polymer water absorption quality (2-1).

4. A 3D composite core for a sanitary product according to claim 2, wherein: the distance between the wave crest or the wave trough of the non-woven fabric (2-2) and the dust-free paper (1) is not more than 2-5 cm.

5. A 3D composite core for a sanitary product according to claim 2, wherein: the thickness of the non-woven fabric (2-2) is more than twice of the thickness of the dust-free paper (1).

6. A 3D composite core for a sanitary product according to claim 2, wherein: the high-molecular water-absorbing resin (2-1) is a mixture of high-molecular water-absorbing resins.

7. A 3D composite core for a sanitary product according to claim 2, wherein: the surface of the non-woven fabric (2-2) is provided with an adhesive layer, and the adhesive layer is glued with the surface of the high polymer water absorption material (2-1).

8. A 3D composite core for a sanitary product according to claim 1, wherein: absorb water layer (2) with dust-free paper (1) between be provided with lock water layer (5), lock water layer (5) for the polymer absorbs water resin and mixes wood pulp and make.

Images