CN117942228A

CN117942228A - Composite SAP (super absorbent polymer) absorption paper core structure and preparation process thereof

Info

Publication number: CN117942228A
Application number: CN202310432771.7A
Authority: CN
Inventors: 潘瑞琪; 曾华东; 潘超凡
Original assignee: Fujian Hengqin Sanitary Products Co ltd
Current assignee: Fujian Hengqin Sanitary Products Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2024-04-30

Abstract

The invention relates to the technical field of sanitary products, in particular to a composite SAP (super absorbent polymer) absorption paper core structure and a preparation process thereof, wherein the composite SAP absorption paper core structure comprises a bottom film, a water absorption layer, a skin-friendly layer, a limit ring, a limit line, a first absorption band, a second absorption band and a water-soluble line, wherein the bottom film wraps the side surface of the water absorption layer, the skin-friendly layer is arranged to cover the water absorption layer, the limit ring is sewn on the skin-friendly layer, the limit ring is separated into a first absorption area and a second absorption area on the water absorption layer, the limit line is respectively arranged on the first absorption area and the second absorption area, the second absorption band is positioned on the outer side of the first absorption band, the limit line is sewn and fixed with the skin-friendly layer in the middle of the limit line, the problem of blocking and pressing genitals caused by volume expansion of the water absorption layer after the urine is fully absorbed by the first absorption band and the second absorption band is solved, the comfort in the wearing process is facilitated, the paper diaper has practical significance and popularization value, and good economic benefit can be expected.

Description

Composite SAP (super absorbent polymer) absorption paper core structure and preparation process thereof

Technical Field

The invention relates to the technical field of sanitary products, in particular to a composite SAP (super absorbent polymer) absorption paper core structure and a preparation process thereof.

Background

The paper diaper (Diaper) is a daily article commonly used by infants, and is a unique name of diaper, diaper or pull-up pants. The dry paper diaper can keep the infant asleep overnight, the paper diaper has the absorption paper core composed of high water absorption resin (polymer SAP, superabsorbentresin for short) and substances such as fluff pulp, chemical fiber and starch, and the water absorption capacity is large, so that urine can be absorbed rapidly.

The SAP absorbs the urine of the refill and absorbs efficiently, but its volume also can expand rapidly at the same time, and current absorption refill has following shortcoming: firstly, the expansion of the paper core is not controlled and is easy to excessively expand, and the expanded paper core can press genitals and also has the problem of lump formation and layering; secondly, the swelling paper core can press genitals, the torsion and bending property of the swelling paper core can be reduced, and the using comfort of the paper diaper can be reduced.

Disclosure of Invention

The invention aims to provide a composite SAP (super absorbent polymer) absorption paper core structure for solving the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: including basement membrane, hydrophilic layer, skin layer, spacing collar, spacing line, first absorption area, second absorption area and water solution line, the basement membrane is located the layer bottom surface and is wrapped up the layer side that absorbs water, and the skin layer sets up and covers the layer that absorbs water on the layer that absorbs water, the spacing collar is made on the hydrophilic layer and is fixed with the layer seam that absorbs water, and the spacing collar separates out first absorption area and second absorption area on the layer that absorbs water, and the spacing collar inboard is first absorption area, and the spacing collar outside is second absorption area, the spacing line sets up respectively on first absorption area and second absorption area, and spacing line tip in the first absorption area is fixed with spacing collar seam fixed connection respectively, and spacing line one end in the second absorption area is fixed with spacing collar seam other end and basement membrane circumference fixed connection, and spacing line length direction and absorbent layer length direction mutually perpendicular, first absorption area and second absorption area set up and are the first absorption area of encircleing of circle shape on the second absorption area, and are located first absorption area outside, and second absorption area and first absorption area and second absorption area are adjacent to the first fold, and the first absorption area is formed with the fold fixed with the first absorption area, and fold.

Preferably, the thickness of the first absorbent region is less than the thickness of the second absorbent region.

Preferably, the limit line is respectively arranged at the front part of the skin-friendly layer, the middle part of the skin-friendly layer and the rear part of the skin-friendly layer.

Preferably, the spacing between adjacent limit lines is the same.

Preferably, the length of the limiting line is greater than the width of the first absorption area and the width of the second absorption area, and the two sides of the limiting line are folded.

Preferably, the folds in the first and second absorbent bands are inclined to the same side and the folds in the first and second absorbent bands are inclined in opposite directions.

Preferably, the two sides of the fold are symmetrically folded inwards to form a folding angle.

In addition, the invention also discloses a preparation method for preparing the composite SAP absorption paper core structure, which comprises the following steps:

(A) Extruding a first absorption band and a second absorption band on the water absorption layer, and fixing the first absorption band and the second absorption band in the second absorption zone and the bottom film;

(B) Covering a skin-friendly layer on the water-absorbing layer, and sewing a limit ring on the skin-friendly layer;

(C) And limiting lines are arranged on the first absorption area and the second absorption area, and are fixed by utilizing water-soluble lines.

As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

According to the composite SAP absorption paper core structure and the preparation process thereof, the first absorption belt and the second absorption belt which are provided with the folds are matched with each other, so that the problem that the water absorption layer fully absorbs urine and then expands in volume to cling to the genitals to cause blocking and pressing of the genitals can be effectively solved, the comfort of the diaper in the wearing process can be improved, the practical significance and the popularization value are achieved, and good economic benefits can be expected to be generated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic view of the structure of the portion A in FIG. 1;

FIG. 3 is a schematic top view of the present invention (with the skin-friendly layer removed);

FIG. 4 is a schematic view of the structure of the portion B in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the present invention;

FIG. 6 is a schematic view of a partial construction of the first absorbent belt;

FIG. 7 is a schematic diagram of the fold stress analysis;

In the figure: the disposable absorbent pad comprises a base film-1, a water absorption layer-2, a skin-friendly layer-3, a limit ring-4, a first absorption area-401, a second absorption area-402, a limit line-5, a first absorption band-6, folds-601, a folding angle-602, a second absorption band-7 and a water-soluble line-8.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

The combined body 1-7, a composite SAP absorbing paper core structure, comprising a base film 1, a water absorbing layer 2, a skin-friendly layer 3, a limit ring 4, a limit line 5, a first absorbing zone 6, a second absorbing zone 7 and a water-soluble line 8, wherein the base film 1 is arranged on the bottom surface of the water absorbing layer 2 and wraps the side surface of the water absorbing layer 2, the skin-friendly layer 3 is arranged on the water absorbing layer 2 to cover the water absorbing layer 2, the limit ring 4 is sewed on the skin-friendly layer 3 and sewed with the water absorbing layer 2 to be fixed, the limit ring 4 is separated on the water absorbing layer 2 into a first absorbing zone 401 and a second absorbing zone 402, the thickness of the first absorbing zone 401 is smaller than the thickness of the second absorbing zone 402, the inner side of the limit ring 4 is the first absorbing zone 401, the outer side of the limit ring 4 is the second absorbing zone 402, the limit line 5 is respectively arranged on the first absorbing zone 401 and the second absorbing zone 402, the end part of the limit line 5 in the first absorbing zone 401 is sewed and fixedly connected with the limit ring 4 respectively, one end of a limiting line 5 in the second absorption region 402 is sewn and fixed with the limiting ring 4, the other end of the limiting line 5 is fixedly connected with the circumferential direction of the bottom film 1, the limiting line 5 is transversely arranged, the length direction of the limiting line 5 is mutually perpendicular to the length direction of the water absorption layer 2, the limiting line 5 is respectively arranged at the front part of the skin-friendly layer 3, the middle part of the skin-friendly layer 3 and the rear part of the skin-friendly layer 3, the spacing distances between the adjacent limiting lines 5 are the same, the length of the limiting line 5 is larger than the width of the first absorption region 401 and the width of the second absorption region 402, the two sides of the first absorption belt 6 and the second absorption belt 7 are folded, the first absorption region 401 is surrounded by the first absorption belt 6 and the second absorption belt 7 in a ring shape in the second absorption region 402, the second absorption belt 7 is positioned at the outer side of the first absorption belt 6, the first absorption belt 6 and the second absorption belt 7 are formed by the water absorption layer 2 into an integrated structure with the water absorption layer 2, the first absorption belt 6, the second absorption belt 7 and the bottom film 1 are fixed, and the first absorption belt 6 is folded, the second absorption band 7 is folded to form a fold 601, the adjacent fold 601 inclines to the same side, the fold 601 on the first absorption band 6 and the second absorption band 7 incline to the same side respectively, the fold 601 on the first absorption band 6 and the fold 601 on the second absorption band 7 incline to the opposite directions, the fold 601 is folded inwards symmetrically on two sides to form a folding angle 602, and the water-soluble line 8 is arranged in the middle of the limit line 5 to stitch and fix the limit line 5 and the skin-friendly layer 3.

A preparation process of a composite SAP absorption paper core structure comprises the following steps:

(A) A first absorption band 6 and a second absorption band 7 are extruded on the water absorption layer 2, and the first absorption band 6 and the second absorption band 7 are arranged in the second absorption area 402 to be fixed with the bottom film 1;

(B) Covering a skin-friendly layer 3 on the water absorption layer 2, and sewing a limit ring 4 on the skin-friendly layer 3;

(C) The limit line 5 is arranged on the first absorption region 401 and the second absorption region 402, and the limit line 5 is fixed by the water-soluble line 8.

The water-absorbing layer 2 refers to a material layer having a water-absorbing effect in the prior art, and is generally made of SAP particles, fluff pulp, fibers and other materials, which are known to the skilled person, so that the specific materials and compositions thereof will not be further described.

The limit ring 4 and the limit wire 5 are ring-shaped and linear components with limit function.

The water-soluble thread 8 is a thread-shaped member formed of water-soluble fibers, and the specific use of the water-soluble fibers does not substantially affect the technical effect, so that a detailed description thereof will be omitted.

The working principle of the invention is as follows: the paper core is arranged at the crotch of the paper diaper, the bottom surface of the bottom film 1 is attached to the inner side of the paper diaper, urine firstly contacts with the skin-friendly layer 3 when the paper core contacts with urine, then the urine is absorbed by the water-absorbing layer 2 through the skin-friendly layer 3, and the first absorption region 401 has the capability of limiting running of the urine to a certain extent because the thickness of the first absorption region 401 is smaller than that of the second absorption region 402, so that the urine is absorbed by the water-absorbing layer 2.

The urine of the water absorption layer 2 can expand gradually, the water solution wire 8 and the urine contact in the process can dissolve gradually, the water solution wire 8 is not fixed with the limit wire 5 any more, the limit wire 5 can limit the expansion of the water absorption layer 2, the phenomenon that the water absorption layer 2 excessively expands to form layering and lump is avoided, and discomfort in the use process is avoided.

The folds 601 are formed on the first absorption belt 6 and the second absorption belt 7, so that the unfolding length of the first absorption belt 6 and the second absorption belt 7 is prolonged by changing the direction, and moreover, the folds 601 are mutually independent and are inclined and stacked in a scale shape, so that the folds can not cause infection to the bending and torsion of the paper core, and the defect that the paper core is hard and has poor use comfort after the thickness of the water absorption layer 2 of a common paper diaper is improved can be overcome. Fold angles 602 are formed on two sides of the fold 601 in an inward folding manner, and the fold angles 602 are arranged on the fold 601, so that the front surface area of the fold 601 can be reduced, the flexibility of the fold 601 is improved, and the phenomenon that the movement of the fold 601 is influenced due to mutual interference of the tips of the fold 601 on the first absorption belt 6 and the second absorption belt 7 is avoided.

As shown in fig. 7 of the accompanying drawings, which is a schematic diagram of stress analysis of the fold 601, in the state that the water absorbing layer 2 absorbs urine to expand or dry, the fold 601 will deform laterally in two sides when the top of the fold 601 is pressed, so that the problems of pressing genitals and covering crotch can be avoided. Gaps exist between the folds 601, and the gaps have the capability of temporarily storing urine after the water absorbing layer 2 fully absorbs urine.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a composite SAP absorbs paper core structure, includes carrier film (1), layer (2) and hydrophilic layer (3) absorb water, carrier film (1) are located layer (2) bottom surface and are wrapped up layer (2) side that absorbs water, hydrophilic layer (3) set up layer (2) that absorbs water, its characterized in that are covered on layer (2) that absorbs water:

The device also comprises a limit ring (4), a limit wire (5), a first absorption band (6), a second absorption band (7) and a water-soluble wire (8);

The limit ring (4) is sewn on the skin-friendly layer (3) and is sewn and fixed with the water absorption layer (2), the limit ring (4) is divided into a first absorption region (401) and a second absorption region (402) on the water absorption layer (2), the first absorption region (401) is arranged at the inner side of the limit ring (4), and the second absorption region (402) is arranged at the outer side of the limit ring (4);

The limiting lines (5) are respectively arranged on the first absorption area (401) and the second absorption area (402), the end parts of the limiting lines (5) in the first absorption area (401) are respectively and fixedly connected with the limiting rings (4) in a sewing mode, one end of each limiting line (5) in the second absorption area (402) is fixedly connected with the corresponding limiting ring (4) in a sewing mode, the other end of each limiting line is fixedly connected with the periphery of the bottom film (1), the limiting lines (5) are transversely arranged, and the length directions of the limiting lines (5) are mutually perpendicular to the length direction of the water absorption layer (2);

The first absorption band (6) and the second absorption band (7) are arranged in the second absorption area (402) to surround the first absorption area (401) in a ring shape, the second absorption band (7) is positioned on the outer side of the first absorption band (6), the first absorption band (6) and the second absorption band (7) are formed into an integrated structure with the water absorption layer (2) by the water absorption layer (2), the first absorption band (6), the second absorption band (7) and the bottom film (1) are fixed, folds (601) are formed on the first absorption band (6) and the second absorption band (7), and adjacent folds (601) incline to the same side;

the water-soluble wire (8) is arranged in the middle of the limit wire (5) to stitch and fix the limit wire (5) and the skin-friendly layer (3).

2. A composite SAP absorbent paper element structure as in claim 1, wherein: the thickness of the first absorption region (401) is smaller than the thickness of the second absorption region (402).

3. A composite SAP absorbent paper element structure as in claim 1, wherein: the limit line (5) is respectively arranged at the front part of the skin-friendly layer (3), the middle part of the skin-friendly layer (3) and the rear part of the skin-friendly layer (3).

4. A composite SAP absorbent paper element structure as in claim 3, wherein: the spacing distances of adjacent limit lines (5) are the same.

5. A composite SAP absorbent paper element structure as in claim 1, wherein: the length of the limit line (5) is longer than the width of the first absorption region (401) and the width of the second absorption region (402) and the two sides are folded.

6. A composite SAP absorbent paper element structure as in claim 1, wherein: the folds (601) on the first absorption band (6) and the second absorption band (7) incline to the same side respectively, and the inclination directions of the folds (601) on the first absorption band (6) and the second absorption band (7) are opposite.

7. A composite SAP absorbent paper element structure as in claim 1, wherein: and folding angles (602) are formed by folding the two sides of the folds (601) symmetrically.

8. A process for preparing a composite SAP absorbent core structure as in any one of claims 1-7, comprising the steps of:

(A) A first absorption band (6) and a second absorption band (7) are extruded on the water absorption layer (2), and the first absorption band (6) and the second absorption band (7) are arranged in a second absorption area (402) to be fixed with the bottom film (1);

(B) Covering a skin-friendly layer (3) on the water absorption layer (2), and sewing a limit ring (4) on the skin-friendly layer (3);

(C) And limiting lines (5) are arranged on the first absorption area (401) and the second absorption area (402), and the limiting lines (5) are fixed by utilizing water-soluble lines (8).