CN208243713U - A water-absorbing composite core - Google Patents

Abstract

The utility model discloses a composite core absorbs water, by top layer, wood pulp upper interlayer, polymer absorb water layer a, intermediate level, polymer absorb water layer b, wood pulp lower interlayer and bottom seven layer structures altogether constitute, be equipped with the intermediate level between top layer and the bottom, be equipped with wood pulp upper interlayer and polymer absorb water layer a between top layer and the intermediate level, wood pulp upper interlayer sets up between top layer and polymer absorb water layer a, be equipped with polymer absorb water layer b and wood pulp lower interlayer between bottom and the intermediate level, wood pulp lower interlayer sets up between bottom and polymer absorb water layer b; antibacterial and anti-inflammatory drugs are added between the top layer and the bottom layer; the liquid absorption is quick, the flow guide effect is good, the diffusion is quick, the liquid passing performance is good, the water absorption and retention performance is improved, the absorption capacity is large, and the water absorption speed is high; excellent drying performance, extremely low reverse osmosis rate and good ventilation.

Description

A water-absorbing composite core

technical field

The utility model relates to the technical field of disposable sanitary products, in particular to a water-absorbing composite core body.

Background technique

Water-absorbent composite cores are used in many disposable hygiene products, such as diapers, maternity pads, medical surgical pads, sanitary napkins, pet pads, and even disposable table pads.

Most of the existing water-absorbing composite cores include a top layer and a bottom layer of non-woven fabric, a middle layer of fluffy fabric, and polymer water-absorbing particles sandwiched between the non-woven fabric layer and the fluffy fabric layer. Moisture passes through the non-woven fabric layer and the fluffy fabric layer, and is locked by the polymer water-absorbing particles (it takes a certain amount of time for the water-absorbing particles to lock the water). If the moisture distribution is uneven or the diffusion is too slow, the local water-absorbing particles cannot Completely locking all the moisture will cause reverse osmosis and affect the product use effect. For example, the reverse osmosis of diapers causes the baby to have red buttocks.

The polymer water-absorbing particles in the prior art are mostly polymer water-absorbing particles evenly sprayed on the water-absorbing particle carrier, and the polymer water-absorbing resin is the most important water-absorbing material in the water-absorbing carrier, which has good water absorption and water retention. However, in the application of some specific occasions, such as wound care after surgery and the recovery period of skin trauma, the effect of ordinary polymer water-absorbing particles is extremely limited. Polymer water-absorbing particles reduce water absorption and water retention performance, and the absorption capacity is small. , slow water absorption.

Utility model content

The purpose of this utility model is to provide a water-absorbing composite core to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A water-absorbing composite core body, which is composed of a top layer, a wood pulp upper interlayer, a polymer water-absorbing layer a, a middle layer, a polymer water-absorbing layer b, a wood pulp lower interlayer and a bottom layer, and a total of seven layers. There is a middle layer, a wood pulp upper interlayer and a polymer water-absorbing layer a are arranged between the top layer and the middle layer, the wood pulp upper interlayer is arranged between the top layer and the polymer water-absorbing layer a, and the bottom layer and the middle layer A polymer water-absorbing layer b and a wood pulp lower interlayer are arranged between them, and the wood pulp lower interlayer is arranged between the bottom layer and the polymer water-absorbing layer b; The lower surface is evenly glued with glue dots through the paste dot coating process, and the diameter of the glue dots is 0.3-0.5mm; the middle layer is punched to form a number of penetrating small holes; antibacterial and anti-inflammatory drugs are added between the top layer and the bottom layer .

As a further solution of the utility model: the top layer, the middle layer and the bottom layer are all made of non-woven fabric, dust-free paper, wood pulp or small white paper.

As a further solution of the present invention: several through holes are evenly opened on the surface of the top layer and the bottom layer.

As a further solution of the present invention: the wood pulp upper interlayer is composed of wood pulp, and the polymer water-absorbing layer a is polyurethane foam.

As a further solution of the present invention: the wood pulp lower interlayer is made of the same material as the wood pulp upper interlayer, and the polymer water-absorbing layer b is made of the same material as the polymer water-absorbing layer a.

As a further solution of the present utility model: the top layer, the wood pulp upper interlayer, the polymer water-absorbing layer a, the middle layer, the polymer water-absorbing layer b, the wood pulp lower interlayer and the bottom layer are sequentially passed through glue spraying or hot pressing from top to bottom. combine together.

As a further solution of the present utility model: the thickness of the upper interlayer of wood pulp and the lower interlayer of wood pulp is the same and both are 3.5 to 4 times the thickness of the middle layer, and the upper interlayer of wood pulp and the lower interlayer of wood pulp are passed through evenly spread wood pulp Adhesive thermocompression molding, the glue used for the bonding is hot melt adhesive.

As a further solution of the present invention: the thickness of the polymer water-absorbing layer b is the same as that of the polymer water-absorbing layer a, and both are 3.5 to 4 times the thickness of the middle layer.

Compared with the prior art, the utility model has the beneficial effects of fast liquid absorption, good diversion effect, rapid diffusion, good liquid passage performance, increased water absorption and water retention performance, large absorption capacity, fast water absorption speed; excellent dry performance, The reverse osmosis rate is extremely low, and the ventilation is good.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1-top layer, 2-wood pulp upper interlayer, 3-polymer water-absorbing layer a, 4-middle layer, 5-polymer water-absorbing layer b, 6-wood pulp lower interlayer, 7-bottom layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, in the embodiment of the utility model, a water-absorbing composite core body consists of a top layer 1, a wood pulp upper interlayer 2, a polymer water-absorbing layer a3, an intermediate layer 4, a polymer water-absorbing layer b5, and a wood pulp lower interlayer 6 and the bottom layer 7 are composed of a total of seven layers. An intermediate layer 4 is arranged between the top layer 1 and the bottom layer 7. The top layer 1, the intermediate layer 4, and the bottom layer 7 are all made of non-woven fabrics, dust-free paper, wood pulp or white paper. Made of paper, the surface of the top layer 1 and the bottom layer 7 are evenly opened with a number of through holes, which have a good air permeability effect, and a wood pulp upper interlayer 2 and a polymer water-absorbing layer are arranged between the top layer 1 and the middle layer 4 a3, the wood pulp upper interlayer 2 is arranged between the top layer 1 and the polymer water-absorbing layer a3, the wood pulp upper interlayer 2 is composed of a small amount of wood pulp, and the polymer water-absorbing layer a3 is preferably a polyurethane foam; the bottom layer 7 The polymer water-absorbing layer b5 and the wood pulp lower interlayer 6 are arranged between the middle layer 4, and the wood pulp lower interlayer 6 is arranged between the bottom layer 7 and the polymer water-absorbing layer b5, and the wood pulp lower interlayer 6 and the wood pulp upper interlayer 2 The materials are the same, and the polymer water-absorbing layer b5 is made of the same material as the polymer water-absorbing layer a3.

The top layer 1, the wood pulp upper interlayer 2, the polymer water-absorbing layer a3, the middle layer 4, the polymer water-absorbing layer b5, the wood pulp lower interlayer 6 and the bottom layer 7 are sequentially combined together by spraying glue or hot pressing from top to bottom .

Preferably, the thickness of the top layer 1, the middle layer 4 and the bottom layer 7 should be the same, and the upper surface of the top layer 1 and the lower surface of the bottom layer 7 are uniformly bonded with glue spots through the paste coating process, and the diameter of the glue spots is 0.3～0.5mm , the glue point increases the friction performance and the water-absorbing contact area, and improves the performance; the thickness of the wood pulp upper interlayer 2 and the wood pulp lower interlayer 6 are the same and are 3.5 to 4 times the thickness of the middle layer 4, and the wood pulp upper interlayer 2 The lower interlayer 6 of the wood pulp is formed by bonding and hot-pressing evenly spread wood pulp, and the adhesive used for the bonding is hot-melt adhesive; the thickness of the polymer water-absorbing layer b5 is the same as that of the polymer water-absorbing layer a3. It is 3.5 to 4 times the thickness of the middle layer 4 .

Preferably, the middle layer 4 is punched to form a number of penetrating small holes, which are conducive to the absorption of liquid, enhance the liquid-through performance, and facilitate the absorption of liquid between the polymer water-absorbing layer b5 and the polymer water-absorbing layer a3 Absorb together, thereby increasing the water absorption content of the polymer water-absorbing layer in the core.

Preferably, antibacterial and anti-inflammatory drugs are added between the top layer 1 and the bottom layer 7, and there are many ways to add them. Preferably, the anti-bacterial and anti-inflammatory drugs are embedded in the wood pulp upper interlayer 2 and the wood pulp lower interlayer 6. Adhesive and integral molding; the antibacterial and anti-inflammatory drugs are composed of traditional Chinese medicine ingredients. The mass ratio is: 10 parts of Achyranthes bidentata, 20 parts of Peucedanum, 20 parts of coix seed, 10 parts of Alisma, 10 parts of Radix Paeoniae Alba, 10 parts of Atractylodes atractylodes, and 10 parts of licorice , 15 parts of Smilax, 20 parts of Dandelion, 15 parts of Bezoar, 7 parts of Gorgon, and 5 parts of Polyporus. It has good antibacterial and anti-inflammatory effects, less toxic and side effects, low price and long-lasting efficacy.

The water-absorbing composite core has fast liquid absorption, good diversion effect, rapid diffusion, good liquid-passing performance, increased water absorption and water retention performance, large absorption capacity, fast water absorption speed; excellent dry performance, extremely low reverse osmosis rate, Well ventilated.

The utility model is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the utility model, those skilled in the art can make some technical features based on the disclosed technical content without creative work. Simple modifications, equivalent changes and modifications all belong to the scope of the technical solution of the present utility model.

In the description of this manual, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Claims (8)

1. a kind of water suction compound core body, which is characterized in that by top layer (1), wood pulp upper interlayer (2), macromolecule water uptake layer a (3), in Interbed (4), macromolecule water uptake layer b (5), wood pulp lower interlayer (6) and bottom (7) in total seven-layer structure constitute, the top layer (1) and Middle layer (4) are equipped between bottom (7), wood pulp upper interlayer (2) and macromolecule are equipped between the top layer (1) and middle layer (4) Water absorption layer a (3), the wood pulp upper interlayer (2) are arranged between top layer (1) and macromolecule water uptake layer a (3), the bottom (7) and Macromolecule water uptake layer b (5) and wood pulp lower interlayer (6) are equipped between middle layer (4), the wood pulp lower interlayer (6) is arranged in bottom (7) between macromolecule water uptake layer b (5)；The thickness of the top layer (1), middle layer (4) and bottom (7) thinks identical, top layer (1) Upper surface and bottom (7) lower surface pass through slurry point coating process and are uniformly stained with glue point, and the diameter of glue point is 0.3~0.5mm；Institute It states several through aperture by being stamped and formed out on middle layer (4)；Being added between the top layer (1) and bottom (7) has antibacterial anti-inflammatory Medicine.

2. a kind of water suction compound core body according to claim 1, which is characterized in that the top layer (1), middle layer (4) and Bottom (7) is all made of non-woven fabrics, dust-free paper, wood pulp or small blank sheet of paper and is made.

3. a kind of water suction compound core body according to claim 1, which is characterized in that the top layer (1) and bottom (7) surface It is uniformly provided with several through-holes.

4. a kind of water suction compound core body according to claim 1, which is characterized in that the wood pulp upper interlayer (2) is by wood pulp Composition, the macromolecule water uptake layer a (3) are polyurethane foaming body.

5. a kind of water suction compound core body according to claim 1, which is characterized in that the wood pulp lower interlayer (6) and wood pulp Upper interlayer (2) material is identical, and macromolecule water uptake layer b (5) is identical as macromolecule water uptake layer a (3) material.

6. a kind of water suction compound core body according to claim 1, which is characterized in that the top layer (1), wood pulp upper interlayer (2), macromolecule water uptake layer a (3), middle layer (4), macromolecule water uptake layer b (5), wood pulp lower interlayer (6) and bottom (7) from upper and Under pass sequentially through glue spraying or hot pressing mode is combined together.

7. a kind of water suction compound core body according to claim 1, which is characterized in that the wood pulp upper interlayer (2) and wood pulp Lower interlayer (6) thickness is identical and is 3.5~4 times of middle layer (4) thickness, wood pulp upper interlayer (2) and wood pulp lower interlayer (6) by The wood pulp for uniformly spreading paving is hot-forming by bonding, and the jelly used that bonds is hot melt adhesive.

8. a kind of water suction compound core body according to claim 1, which is characterized in that the macromolecule water uptake layer b (5) and height Molecule water absorption layer a (3) thickness is identical and is 3.5~4 times of middle layer (4) thickness.