CN107928882B

CN107928882B - Production method of composite core paper diaper

Info

Publication number: CN107928882B
Application number: CN201711477230.7A
Authority: CN
Inventors: 陈宗哲; 谢锡佳; 利莉; 蔡光合; 叶俊鸿
Original assignee: Guangdong Cojin Co ltd
Current assignee: Guangdong Cojin Co ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2020-12-18
Anticipated expiration: 2037-12-29
Also published as: CN107928882A

Abstract

The invention relates to the field of sanitary products, and provides a production method of a paper diaper with a composite core body, which solves the problem that the absorption core is easy to break and agglomerate due to the defects of the production method of the paper diaper in the prior art, and comprises the forming step of the absorption core, wherein the forming step of the absorption core comprises the following steps: unwinding a non-woven fabric 5a through an unwinding mechanism and horizontally conveying the non-woven fabric; secondly, paving the formed absorption core 1, the absorption core 3 and the absorption core 5 above the non-woven fabric 5a at intervals; thirdly, arranging a layer of non-woven fabric 5c on the upper surfaces of the absorption core 1, the absorption core 3 and the absorption core 5 in the step II; setting the formed absorption core 2 and the absorption core 4 on the upper surface of the non-woven fabric 5c, wherein the absorption core 2 is positioned between the absorption core 1 and the absorption core 3; fifthly, a layer of non-woven fabric 5b is arranged on the upper surfaces of the absorption core 2 and the absorption core 4 in the step (IV).

Description

Production method of composite core paper diaper

Technical Field

The invention relates to the field of sanitary products, in particular to a production method of a paper diaper with a composite core body.

Background

Traditional disposable absorbent article mainly includes from top to bottom the liquid-permeable surface course, absorber and the liquid-tight nature bottom that the stromatolite set up in proper order, and this absorber is used for absorbing and keeps human excreta liquid, and liquid-permeable surface course provides comfortable and dry and comfortable sensation when being used for contacting with the health, allows liquid to pass through freely simultaneously, gets into the absorber of lower floor, and liquid-tight nature bottom is arranged in keeping absorption liquid in the absorber to prevent that the liquid that absorbs from making dirty wearing person's trousers.

Accordingly, the conventional method for manufacturing an absorbent article includes the preparation of a core, the core is usually formed by mixing sap (super absorbent resin) and fluff pulp, and is absorbed into a die wheel die cavity through negative pressure, a metal net in the die wheel die cavity is generally horizontally arranged, the prepared core is correspondingly flat and integrated, the product is common, the liquid absorption speed is slow, and the core is easy to break.

In order to improve the liquid absorption speed, the absorption core is often arranged into a plurality of strips, specifically referring to fig. 1, the existing absorption body comprises an upper substrate layer 5b ', an absorption core and a lower substrate layer 5 a' which are sequentially stacked from top to bottom, the absorption core is composed of a plurality of spaced and parallel core bodies, the number of the core bodies is usually preferably 5, the core bodies are respectively absorbent cores 1 ', 2', 3 ', 4', 5 ', and the upper substrate layer 5 b' and the lower substrate layer 5a 'at the spaced positions are compounded through glue spraying or through ultrasonic lamination, and the absorption core is arranged into a plurality of spaced and parallel core bodies, so that the excreted liquid can be absorbed by the body more quickly, but the absorption core at the compounded or laminated positions is easy to swell after absorbing water, so that the core body 21' is agglomerated and broken, and the use is uncomfortable.

Disclosure of Invention

Therefore, aiming at the above, the invention provides a production method of a diaper with a composite core, which solves the problem that the diaper in the prior art is easy to break and agglomerate due to the defects in the production method.

In order to achieve the purpose, the invention is realized by the following technical scheme: a production method of a paper diaper with a composite core body comprises a forming step of an absorption core, wherein the forming step of the absorption core comprises the following steps: unwinding a non-woven fabric 5a through an unwinding mechanism and horizontally conveying the non-woven fabric; secondly, the formed absorption core 1, the absorption core 3 and the absorption core 5 are sequentially paved above the non-woven fabric 5a at intervals; thirdly, a layer of non-woven fabric or toilet paper 5c is arranged on the upper surfaces of the absorption core 1, the absorption core 3 and the absorption core 5 in the step II; fourthly, arranging a formed absorption core 2 and an absorption core 4 on the upper surface of the non-woven fabric or the toilet paper 5c in the third step, wherein the absorption core 2 is positioned between the absorption core 1 and the absorption core 3, the absorption core 4 is positioned between the absorption core 3 and the absorption core 5, and the projection areas of the absorption core 1, the absorption core 2, the absorption core 3, the absorption core 4 and the absorption core 5 in the longitudinal direction are not overlapped; fifthly, arranging a layer of non-woven fabric 5b on the upper surfaces of the absorption core 2 and the absorption core 4 in the step IV; sixthly, connecting the free ends of the

non-woven fabrics

5a and 5b at the same side through hot pressing or thermal bonding;

the preparation processes of the absorption core 1, the absorption core 3 and the absorption core 5 are as follows: the fluff pulp is crushed into fibers with the diameter less than 6mm and then mixed with super absorbent resin, and then the fibers are absorbed in the forming grooves 6, the forming grooves 7 and the forming grooves 8 on the circumferential side surface of the forming drum 11 through negative pressure, the forming grooves 6, the forming grooves 7 and the forming grooves 8 are longitudinally distributed in parallel at intervals along the circumferential side surface of the forming drum, each forming groove is in a strip shape, and then the absorption core on the forming drum is demoulded on the non-woven fabric 5 a.

The preparation processes of the absorption core 2 and the absorption core 4 are as follows: the fluff pulp is crushed into fibers with the diameter less than 6mm and then mixed with super absorbent resin, and then the fibers are absorbed in the forming grooves 9 and the forming grooves 10 on the circumferential side surface of the forming drum 12 through negative pressure, the forming grooves 9 and the forming grooves 10 are longitudinally distributed in parallel at intervals along the circumferential side surface of the forming drum, each forming groove 9 and each forming groove 10 are in a long strip shape, and then the absorption core on the forming drum is demoulded on the non-woven fabric or the toilet paper 5 c.

The further improvement is that: and the positions of the absorption core 1, the absorption core 3 and the absorption core 5 in the step II are exchanged with the positions of the absorption core 2 and the absorption core 4 in the step IV.

The further improvement is that: the method also comprises the step two of paving the formed absorption core (52) and the absorption core (54) and the formed absorption core (1), the formed absorption core (3) and the formed absorption core (5) above the non-woven fabric (5a) at intervals; the method is characterized by further comprising the step of arranging the formed absorption core (51) and the absorption core (53) on the upper surface of the non-woven fabric or toilet paper (5c) together with the absorption core (2) and the absorption core (4), wherein the absorption core (51) is arranged between the absorption core (5) and the absorption core (52), the absorption core (52) is arranged between the absorption core (51) and the absorption core (53), the absorption core (53) is arranged between the absorption core (52) and the absorption core (54), and the projection areas of the absorption core (5), the absorption core (51), the absorption core (52), the absorption core (53) and the absorption core (54) in the longitudinal direction are not overlapped.

By adopting the technical scheme, the invention has the beneficial effects that: the paper diaper manufactured by the production method has a composite core body, the composite core body is formed by compounding an upper layer absorption core 2, an absorption core 4, a lower layer absorption core 1, an absorption core 3 and an absorption core 5, the longitudinal projection areas of the absorption cores are not overlapped, non-woven fabrics or toilet paper 5c are arranged between the

absorption cores

1, 3 and 5 and the

absorption cores

2 and 4, and after the composite core body is treated by a hot press roller, the phenomenon of conglomeration and fracture is not easy to occur after the composite core body absorbs excrement, so that the paper diaper is comfortable to use.

Drawings

FIG. 1 is a schematic structural diagram of the background art of the present invention;

FIG. 2 is a schematic structural diagram of a composite core according to an embodiment of the present invention;

FIG. 3 is a schematic process flow diagram according to a first embodiment of the present invention;

FIG. 4 is a schematic circumferential side view of a forming drum 11 according to an embodiment of the present invention;

fig. 5 is a schematic circumferential side view of a forming drum 12 in accordance with an embodiment of the present invention.

FIG. 6 is a schematic process flow diagram of a second embodiment of the present invention;

fig. 7 is a schematic process flow diagram of a third embodiment of the present invention.

Detailed Description

The following detailed description will be provided for the embodiments of the present invention with reference to specific embodiments, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Unless otherwise indicated, the techniques employed in the examples are conventional and well known to those skilled in the art, and the reagents and products employed are also commercially available. The source, trade name and if necessary the constituents of the reagents used are indicated at the first appearance.

Example one

Referring to fig. 2 to 5, a method for producing a diaper with a composite core includes a step of molding an absorbent core, which includes: unwinding a non-woven fabric 5a through an unwinding mechanism and horizontally conveying the non-woven fabric; secondly, the formed absorption core 1, the absorption core 3 and the absorption core 5 are sequentially paved above the non-woven fabric 5a at intervals; thirdly, arranging a layer of non-woven fabric 5c on the upper surfaces of the absorption core 1, the absorption core 3 and the absorption core 5 in the step II; fourthly, arranging a formed absorption core 2 and an absorption core 4 on the upper surface of the non-woven fabric 5c in the third step, wherein the absorption core 2 is positioned between the absorption core 1 and the absorption core 3, the absorption core 4 is positioned between the absorption core 3 and the absorption core 5, and the projection areas of the absorption core 1, the absorption core 2, the absorption core 3, the absorption core 4 and the absorption core 5 in the longitudinal direction are not overlapped; fifthly, arranging a layer of non-woven fabric 5b on the upper surfaces of the absorption core 2 and the absorption core 4 in the step IV; sixthly, connecting the free ends of the non-woven

fabrics

5a and 5b at the same side through hot pressing or thermal bonding;

And compounding the formed absorption core with a bottom film, a bottom layer non-woven fabric, a front waist tape, leg rubber bands, magic buckles, a surface layer, an elastic waistline, a leakage-proof water-repellent non-woven fabric, a three-dimensional rubber band and the like to obtain the composite core body paper diaper.

Example two

Referring to example one and fig. 6, the positions of the absorbent core 1, the absorbent core 3 and the absorbent core 5 of step (c) and the

absorbent cores

2 and 4 of step (c) are reversed. The other steps are consistent with the embodiment.

EXAMPLE III

Referring to fig. 7 and the first embodiment, a method for producing a diaper with a composite core comprises a step of forming an absorbent core, wherein the step of forming the absorbent core comprises the following steps: unwinding a non-woven fabric 5a through an unwinding mechanism and horizontally conveying the non-woven fabric; secondly, the formed absorption core 1, the absorption core 3, the absorption core 5, the absorption core 52 and the absorption core 54 are sequentially paved above the non-woven fabric 5a at intervals; thirdly, a layer of non-woven fabric 5c is arranged on the upper surfaces of the absorption core 1, the absorption core 3, the absorption core 5, the absorption core 52 and the absorption core 54 in the step two; fourthly, arranging the formed absorption core 2, the absorption core 4, the absorption core 51 and the absorption core 53 on the upper surface of the non-woven fabric 5c in the third step, wherein the absorption core 2 is arranged between the absorption core 1 and the absorption core 3, the absorption core 4 is arranged between the absorption core 3 and the absorption core 5, the absorption core 51 is arranged between the absorption core 5 and the absorption core 52, the absorption core 52 is arranged between the absorption core 51 and the absorption core 53, the absorption core 53 is arranged between the absorption core 52 and the absorption core 54, and the projection areas of the absorption core 1, the absorption core 2, the absorption core 3, the absorption core 4, the absorption core 5, the absorption core 51, the absorption core 52, the absorption core 53 and the absorption core 54 in the longitudinal direction are not overlapped; fifthly, arranging a layer of non-woven fabric 5b on the upper surfaces of the absorption core 2, the absorption core 4, the absorption core 51 and the absorption core 53 in the step (iv); sixthly, connecting the free ends of the

non-woven fabrics

5a and 5b at the same side through hot pressing or thermal bonding;

the drum 11 used in this embodiment has a larger number of grooves arranged in the circumferential side surface than in the first embodiment, i.e., two grooves arranged in the lateral direction below the grooves 8 in the longitudinal direction, and the drum 12 has a larger number of grooves arranged in the lateral direction below the grooves 10 in the longitudinal direction than in the first embodiment.

The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.

Claims

1. A production method of a paper diaper with a composite core is characterized by comprising the following steps: a step of forming comprising an absorbent core, the step of forming comprising: unwinding a first non-woven fabric (5a) through an unwinding mechanism and horizontally conveying the first non-woven fabric; secondly, paving the formed first absorption core (1), the third absorption core (3) and the fifth absorption core (5) above the first non-woven fabric (5a) at intervals in sequence; thirdly, a layer of second non-woven fabric or toilet paper (5c) is arranged on the upper surfaces of the first absorption core (1), the third absorption core (3) and the fifth absorption core (5) in the step two; fourthly, a second absorption core (2) and a fourth absorption core (4) which are well formed are arranged on the upper surface of the second non-woven fabric or the toilet paper (5c), the second absorption core (2) is positioned between the first absorption core (1) and the third absorption core (3), the fourth absorption core (4) is positioned between the third absorption core (3) and the fifth absorption core (5), and the projection areas of the first absorption core (1), the second absorption core (2), the third absorption core (3), the fourth absorption core (4) and the fifth absorption core (5) in the longitudinal direction are not overlapped; fifthly, arranging a layer of third non-woven fabric (5b) on the upper surfaces of the second absorption core (2) and the fourth absorption core (4) in the step (iv); sixthly, connecting the free ends of the first non-woven fabric (5a) and the third non-woven fabric (5b) at the same side through hot pressing or thermal bonding;

the first absorption core (1), the third absorption core (3) and the fifth absorption core (5) are prepared by the following steps: the production method comprises the steps of crushing fluff pulp into fibers with the size smaller than 6mm, mixing the fibers with super absorbent resin, adsorbing the fibers in first forming grooves (6), second forming grooves (7) and third forming grooves (8) on the circumferential side surface of a first forming drum (11) through negative pressure, enabling the first forming grooves (6), the second forming grooves (7) and the third forming grooves (8) to be longitudinally distributed in parallel at intervals along the circumferential side surface of the first forming drum (11), enabling the first forming grooves (6), the second forming grooves (7) and the third forming grooves (8) to be long-strip-shaped, and then demolding an absorption core on the first forming drum (11) on a first non-woven fabric (5 a);

the second absorption core (2) and the fourth absorption core (4) are prepared by the following steps: the fluff pulp is crushed into fibers with the diameter less than 6mm, then the fibers are mixed with super absorbent resin, and then the fibers are adsorbed in fourth forming grooves (9) and fifth forming grooves (10) on the circumferential side surface of a second forming drum (12) through negative pressure, the fourth forming grooves (9) and the fifth forming grooves (10) are longitudinally distributed in parallel along the circumferential side surface of the second forming drum (12) at intervals, each fourth forming groove (9) and each fifth forming groove (10) are in a long strip shape, and then an absorption core on the second forming drum (12) is demoulded on second non-woven fabric or toilet paper (5 c).

2. The method for producing a composite core diaper according to claim 1, wherein: and the positions of the first absorption core (1), the third absorption core (3) and the fifth absorption core (5) in the step II are exchanged with the positions of the second absorption core (2) and the fourth absorption core (4) in the step IV.

3. The method for producing a composite core diaper according to claim 1, wherein: the second step is that the formed seventh absorption core (52) and the ninth absorption core (54) and the formed first absorption core (1), the third absorption core (3) and the fifth absorption core (5) are paved above the first non-woven fabric (5a) at intervals; the formed sixth absorbent core (51) and the eighth absorbent core (53) are arranged on the upper surface of a second non-woven fabric or toilet paper (5c) together with a second absorbent core (2) and a fourth absorbent core (4), the sixth absorbent core (51) is arranged between a fifth absorbent core (5) and a seventh absorbent core (52), the seventh absorbent core (52) is arranged between the sixth absorbent core (51) and the eighth absorbent core (53), the eighth absorbent core (53) is arranged between the seventh absorbent core (52) and a ninth absorbent core (54), and the projected areas of the fifth absorbent core (5), the sixth absorbent core (51), the seventh absorbent core (52), the eighth absorbent core (53) and the ninth absorbent core (54) in the longitudinal direction are not overlapped.