CN112754765A

CN112754765A - Preparation method of diaper with hip protection function

Info

Publication number: CN112754765A
Application number: CN202011558821.9A
Authority: CN
Inventors: 梁倩儿; 王添辉; 陈宗哲; 谢锡佳; 利莉
Original assignee: Guangdong Cojin Co ltd
Current assignee: Guangdong Cojin Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-05-07
Anticipated expiration: 2040-12-25
Also published as: CN112754765B

Abstract

The invention relates to a preparation method of a butt-protecting diaper. The diaper body comprises two butt-protecting layers, a liquid-permeable surface layer, a composite absorbing core layer and a liquid-impermeable bottom layer, which are stacked from the inside to the outside. The upper breathable layer, the bottom breathable layer and the lower breathable layer are superimposed, and a first rubber is arranged on both sides of the buttocks layer between the upper breathable layer and the lower breathable layer; In the absorption core, the upper absorbent core is longitudinally provided with a first diversion groove, and the lower layer absorbent core is longitudinally provided with a second diversion groove. The invention relates to the field of disposable hygienic products, and has good butt-protecting effect on the buttocks. The first diversion groove and the second diversion groove improve the diversion and absorption capabilities of the composite absorbent core layer, and solve the problem of the absorbent core of a diaper. The diversion effect is poor, the absorption speed is slow, and the buttocks are easily stained with liquid, which can easily lead to technical problems of the baby's red buttocks.

Description

Preparation method of diaper with hip protection function

Technical Field

The invention relates to the field of disposable sanitary products, in particular to a method for manufacturing a hip-protecting paper diaper.

Background

When the existing disposable sanitary article is used, liquid enters the disposable sanitary article, the liquid is concentrated at the liquid discharge part of the absorption core body and then diffuses towards the periphery, when the absorption core body absorbs the liquid, the liquid is usually concentrated at the absorption core body positioned in a urine discharge area, if a large amount of liquid enters the absorption core body at the same time, because the absorption speed of the absorption core body is limited, the large amount of liquid is likely to push away the paper diaper, the space area between the paper diaper and a human body is enlarged, the liquid between the paper diaper and the human body is likely to flow and disperse all around, the liquid is likely to invade the hip area, the hip of a baby is likely to be infected with bacteria, and the red buttocks are likely to be caused; especially, when the baby sleeps at night, the probability of red buttocks is increased because the baby usually wears the paper diaper for a long time, and the health of the baby is damaged.

Chinese patent application No.: 201921448990.X discloses a breathable paper diaper, which comprises a paper diaper body, wherein a liquid absorption core is arranged in the middle of the front surface of the paper diaper body, liquid absorption sponge is filled in the liquid absorption core, and adhesive tapes are fixedly connected to the tops of the two sides of the paper diaper body. Through the setting of panty-shape diapers body, imbibition core, adhesive tape, connecting band, protection pad, ventilative pad and magic subsides, can effectually absorb the urine when using this panty-shape diapers, the imbibition core that uses simultaneously can be demolishd, can change the imbibition core, and this imbibition core is easily ventilative after dressing for a long time, has increased ventilative pad and can make panty-shape diapers reach ventilative effect, can not produce the sweat because of the waist and volatilize and not go out and cause the erosion to baby's skin. However, when the paper diaper is used, the absorption core has poor diversion effect and slow absorption speed, and the buttocks are easy to be stained with liquid, which easily causes the red buttocks of the baby and affects the health of the baby.

Disclosure of Invention

Therefore, in order to solve the problems, the invention provides a method for manufacturing a hip-protecting paper diaper. The technical problems that the diaper absorption core body is poor in flow guide effect and low in absorption speed, liquid is easily attached to the buttocks, and the buttocks of a baby are easily red are solved.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for preparing a hip-protecting paper diaper comprises a paper diaper body and a paper diaper production device, wherein the paper diaper body is provided with a longitudinal direction in the length direction and a transverse direction in the width direction, and the method comprises the following steps:

(1) two hip guards were prepared: sequentially conveying a lower breathable layer, a hip protection layer and an upper breathable layer from top to bottom, sequentially conveying first rubber on two sides of the hip protection layer, spraying glue on the upper breathable layer, sequentially compounding and superposing the lower breathable layer, the hip protection layer, the two first rubbers and the upper breathable layer through a compounding roller mechanism, compositely fixing two sides of the lower breathable layer and two sides of the upper breathable layer, pressing and fixing the compounded hip protection part through a compression roller mechanism, and cutting the compounded hip protection part through a first cutting roller mechanism to form a sheet-shaped hip protection part;

each hip protection part comprises an upper breathable layer, a hip protection layer and a lower breathable layer which are sequentially overlapped up and down, first rubber is arranged between the upper breathable layer and the lower breathable layer and positioned on two sides of the hip protection layer, the upper breathable layer is provided with a plurality of meshes, and hip protection factors or hip protection agents are arranged on the hip protection parts;

the paper diaper production device comprises two hip protection mechanisms which respectively and synchronously produce hip protection, and the produced flaky hip protection parts are synchronously sent to a first adsorption wheel; the compression roller mechanism and the composite roller mechanism are respectively provided with a first ring groove corresponding to the two first rubbers, and the compression roller mechanism and the composite roller mechanism are respectively provided with a second ring groove corresponding to the hip protection part;

(2) preparing a liquid-permeable surface layer and a liquid-impermeable bottom layer;

(3) preparing a composite absorption core layer: the high polymer blanking mechanism respectively blanks high polymer materials onto two high polymer carriers, the high polymer materials form a longitudinal first diversion trench on an upper layer absorption core through the baffle mechanism, form a longitudinal second diversion trench on a lower layer absorption core, compound and fix the upper layer absorption core and the lower layer absorption core, simultaneously, two second rubbers are synchronously conveyed and fixed on the top of the lower layer absorption core, the two second rubbers are positioned at two sides of the upper layer absorption core, the absorption core is cut into a flaky compound absorption core layer through the second cutting roller mechanism, and the compound absorption core is placed on the liquid-impermeable bottom layer through the second adsorption wheel;

the composite absorption core layer comprises an upper absorption core and a lower absorption core which are sequentially overlapped up and down, the upper absorption core is positioned in the middle of the top of the lower absorption core, the width of the upper absorption core is smaller than that of the lower absorption core, and second rubber is respectively arranged on the top of the lower absorption core and positioned on two sides of the upper absorption core;

(4) the liquid-permeable surface layer, the composite absorption core layer and the liquid-impermeable bottom layer are sequentially overlapped and compounded up and down, glue is sprayed on the side edge of the top of the flaky hip pad, the two hip pads are compounded on the liquid-permeable surface layer after being turned over for 180 degrees through the first adsorption wheel, and then the flaky paper diaper body is cut through the third cutting roller mechanism.

Further:

in the method (1), when the lower breathable layer, the hip protection layer, the two first rubbers and the upper breathable layer are composited and superposed through the composite roller mechanism, the hip protection layer and the first rubbers are horizontally transported, the lower breathable layer inclines downwards, the upper breathable layer inclines upwards and enters the composite roller mechanism, and the height of the first rubbers is twice of the thickness of the hip protection layer; all be equipped with on two rollers of compound roller mechanism first annular with the second annular, top and bottom are located and form fore-and-aft hip care groove between two first rubbers respectively.

In the method (1), the width of the lower breathable layer is larger than that of the upper breathable layer, the lower breathable layer, the hip protection layer, the two first rubbers and the upper breathable layer are sequentially compounded and overlapped through the compound roller mechanism, the upper breathable layer horizontally enters the compound roller mechanism, the hip protection layer, the first rubbers and the lower breathable layer obliquely and downwards enter the compound roller mechanism, the thickness of the first rubbers is twice of the height of the hip protection layer, a roller of the compound roller mechanism, which is positioned above the roller mechanism, is provided with the first annular groove and the second annular groove, the top of the compounded layer is positioned between the two first rubbers to form a longitudinal hip protection groove, and the bottom of the hip protection groove on the diaper body is formed.

The number of the first flow guide grooves is three, the width of the first flow guide groove in the middle is larger than the width of the first flow guide grooves on the two sides, the number of the second flow guide grooves is five, and the width of the second flow guide grooves is gradually reduced along the directions of the two sides.

The first diversion trenches on two sides are respectively provided with a superposition part with the two second diversion trenches along the projection of the surface of the lower layer absorption core.

In the method (1), before the lower breathable layer and the hip protection layer are compounded, a drying agent is applied on the hip protection layer and then compounded, and the drying agent is arranged between the lower breathable layer and the hip protection layer.

The two side edges of the upper-layer absorption core are respectively positioned above the two second diversion grooves.

The height of the second rubber is 1.5 to 3 times of the thickness of the upper layer absorption core, and the top of the paper diaper body is positioned between the two second rubbers to form a longitudinal urination area.

The height of the first rubber is at least 1.5 times of the thickness of the hip protection layer, and the thickness of the hip protection layer is 3mm to 10 mm.

The compression roller mechanism and the composite roller mechanism have the same structure, and the distance between the two rollers of the composite roller mechanism is larger than that between the two rollers of the compression roller mechanism.

The width of the upper absorbent core is one third to two thirds of the width of the lower absorbent core layer.

The upper layer absorbent core has a height of 5mm to 20mm, and the lower layer absorbent core has a height of 1.5 times to 3 times that of the upper layer absorbent core.

By adopting the technical scheme, the invention has the beneficial effects that:

when the paper diaper is worn, the two buttocks are positioned at the buttocks, the first rubber for protecting the buttocks has the function of isolating liquid, the liquid in the middle can be prevented from flowing to the buttocks, the buttocks of a baby are not easy to be stained with the liquid, the probability of bacteria infection on the buttocks of the baby is reduced, the buttocks protecting layer is provided with the buttocks protecting factor or the buttocks protecting agent, the buttocks protecting layer provides a small amount of the buttocks protecting factor or the buttocks protecting agent for the buttocks through the meshes of the upper breathable layer, and the red buttocks of the baby are prevented, so that the buttocks protecting factor or the buttocks protecting agent provided for the buttocks is less, the buttocks protecting factor or the buttocks protecting agent cannot be contacted with the buttocks in a large area for a long time, the conditions of resistance reduction and skin allergy of the baby are prevented, therefore, the buttocks protecting agent is contacted with the skin of the baby for a long time, the amount of the buttocks protecting agent used by the baby is too large, the resistance reduction of the baby is easy to cause, and the skin allergy of the baby is possible; the second rubber also has the functions of diversion and liquid isolation, can prevent liquid from flowing into the hip direction, and the first diversion groove and the second diversion groove can enhance the space for storing the liquid and the speed for absorbing the liquid of the composite absorption core layer and have the function of diversion, thereby being beneficial to fully absorbing the liquid at each part of the composite absorption core layer, enhancing the absorption speed of the composite absorption core layer, preventing the liquid from flowing to the hip and having the function of protecting the hip; furthermore, when the top and the bottom of the hip protection part are positioned between the two first rubbers, longitudinal hip protection grooves are respectively formed, the two hip protection grooves not only have the functions of buffering and ventilation, but also prevent the liquid on the composite absorption core layer from flowing back to be contacted with the hip, so that the hip is separated from the liquid-permeable surface layer, the liquid is prevented from entering the hip, and meanwhile, hip protection factors or a hip protection agent is prevented from entering the hip of a baby in a large amount; furthermore, when the hip protection grooves are formed at the bottom of the hip protection part on the paper diaper body, one hip protection groove can separate the hip part from the liquid-permeable surface layer, and liquid on the composite absorption core layer is not easy to flow back to contact with the hip part; furthermore, the width of the first diversion trench in the middle part is larger than the width of the first diversion trenches on the two sides, and the width of the second diversion trench is gradually reduced along the directions of the two sides; furthermore, the projections of the first flow guide grooves on the two sides along the surface of the lower-layer absorption core are overlapped with the two second flow guide grooves, and as more liquid is relatively arranged on the first flow guide grooves, more liquid enters the lower-layer absorption core from the first flow guide grooves, and part of the liquid in the first flow guide grooves can downwards penetrate into the two second flow guide grooves, so that the flow guide is facilitated, and the absorption and flow guide capacity of the liquid is accelerated; furthermore, a drying agent is arranged between the lower breathable layer and the hip protection layer, a small amount of liquid absorbed on the composite absorption core layer can be guided to penetrate into the wet breathable surface layer, and the drying agent has a drying effect and can absorb a small amount of liquid on the dry breathable surface layer to prevent the liquid from penetrating into the hip protection part and preventing the hip from being stained with the liquid; furthermore, the two side edges of the upper layer absorption core are respectively positioned above the two second diversion grooves, when the liquid amount is larger, part of the liquid flows out of the upper layer absorption core and can directly flow into the second diversion grooves for diversion, the diversion effect is good, and the absorption speed of the lower layer absorption core is accelerated; further, the height of the second rubber is 1.5 times to 3 times of the thickness of the upper layer absorption core, when a large amount of liquid flows in, the liquid storage space is increased in the urination area, the liquid is prevented from passing through the second rubber to enter the buttocks, and the urination area has the function of liquid storage and buffering.

Drawings

FIG. 1 is a schematic structural view of a diaper body;

FIG. 2 is a top view of the diaper body after deployment;

FIG. 3 is an enlarged cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a cross-sectional view of the hip guard;

FIG. 6 is an exploded view of the hip guard;

FIG. 7 is a schematic structural view of a compound roller mechanism;

fig. 8 is a top view of the shutter mechanism.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 8, the embodiment provides a method for manufacturing a hip-protection paper diaper, which includes a paper diaper body and a paper diaper production apparatus.

The diaper body is provided with a longitudinal direction along the length direction and a transverse direction along the width direction, and comprises two hip protectors 1, a liquid-permeable surface layer 2, a composite absorption core layer 3 and a liquid-impermeable bottom layer 4 which are overlapped from inside to outside. Every protects buttock 1 including in proper order from top to bottom superimposed last ventilative layer 11, protect buttockss layer 12, ventilative layer 13 down, goes up ventilative layer 11 and is located between ventilative layer 13 down and protect buttockss layer 12 both sides and be equipped with first rubber 14, protects the top and the bottom of buttockss 1 and is located and form fore-and-aft buttockss groove 10 between two first rubbers 14 respectively. The height of the first rubber 14 is twice of the thickness of the hip protection layer 12, the width of the lower breathable layer 13 is twice of the width of the upper breathable layer 11, the upper breathable layer 11 is provided with a plurality of meshes, and hip protection factors or hip protection agents are arranged on the hip protection part 1; a drying agent 15 is arranged between the lower breathable layer 13 and the hip protection layer 12. The composite absorption core layer 3 comprises an upper absorption core 31 and a lower absorption core 32 which are sequentially overlapped up and down, the upper absorption core 31 is positioned in the middle of the top of the lower absorption core 32, the width of the upper absorption core 31 is smaller than that of the lower absorption core 32, and second rubbers 33 are respectively arranged on the two sides of the upper absorption core 31 at the top of the lower absorption core 32; the height of the second rubber 33 is usually 2 times of the thickness of the upper layer absorption core 31, a longitudinal urination region 30 is formed between the two second rubbers 33 at the top of the diaper body, the upper layer absorption core 31 is longitudinally provided with three first diversion trenches 310, the width of the first diversion trench 310 in the middle is larger than that of the first diversion trenches 310 on the two sides, the lower layer absorption core 32 is longitudinally provided with five second diversion trenches 320, the width of the second diversion trenches 320 is gradually reduced along the directions of the two sides, and the projections of the first diversion trenches 310 on the two sides along the surface of the lower layer absorption core 32 respectively have coincident parts with the two second diversion trenches 320; both side edges of the upper absorbent core 31 are respectively located above two of the second channels 320.

The hip protection part 1 can be made of fabric, cotton or other materials, and the hip protection factors or the hip protection agents on the hip protection part 1 can be added on the hip protection part 1 through soaking or spraying, and are well-known materials and technologies, and are not described again.

Generally, the width of the upper layer absorbent core 31 is one third to two thirds of the width of the lower layer absorbent core 32, the height of the upper layer absorbent core 31 is 5mm to 20mm, and the height of the lower layer absorbent core 32 is 1.5 times to 3 times of the upper layer absorbent core 31, and other values may be used, depending on the case.

The height of the second rubber 33 is generally 1.5 to 3 times the thickness of the upper absorbent core 31, and may be other values, as the case may be.

The height of the first rubber 14 can also be 1.5 times or other multiples of the thickness of the hip protection layer 12, and the thickness of the hip protection layer 12 is usually 3mm to 10mm, and other values can be set according to the situation.

The first rubber 14 and the second rubber 33 may be made of rubber band or other rubber materials, which are well known materials and will not be described herein.

The desiccant 15 may be a desiccant pellet or other desiccant 15, which is a well-known material and will not be described herein.

The number of the first guiding grooves 310 may be three, four, five or even more, and the width of each first guiding groove 310 may also be the same, but the guiding effect is relatively poor; the number of the second guiding grooves 320 may be one, two, three or more, and the width of each second guiding groove 320 may also be the same, but the guiding effect is relatively poor, and the second guiding grooves are specifically set according to the situation.

The paper diaper production device comprises two hip protection mechanisms which respectively and synchronously produce hip protectors 1, wherein each hip protection mechanism comprises a composite roller mechanism, a compression roller mechanism, a first cutting roller mechanism, a glue spraying mechanism and a conveying mechanism; the two rollers 5 of the compression roller mechanism and the composite roller mechanism are respectively provided with a first ring groove 51 corresponding to the two first rubbers 14, and the two rollers 5 of the compression roller mechanism and the composite roller mechanism are respectively provided with a second ring groove 52 corresponding to the hip protection part 1; referring to fig. 7, fig. 7 is a schematic structural diagram of a composite roller mechanism, the roller mechanism and the composite roller mechanism have the same structure, and the distance between two rollers of the composite roller mechanism is greater than the distance between two rollers of the roller mechanism. The paper diaper production device further comprises an absorption core production mechanism, the absorption core production mechanism comprises a polymer blanking mechanism, two baffle mechanisms, a second cutting roller mechanism and a second adsorption wheel, one baffle mechanism comprises three baffles, the other baffle mechanism comprises five baffles 6, and referring to fig. 8, fig. 8 has five baffles 6, and the baffles shield polymer materials to form a first diversion trench 310 and a second diversion trench 320.

The composite roller mechanism, the press roller mechanism, the first cutting roller mechanism, the glue spraying mechanism, the conveying mechanism, the first adsorption wheel, the polymer blanking mechanism, the second cutting roller mechanism and the second adsorption wheel are well-known devices and are not described herein again.

The method comprises the following steps:

(1) two hip guards 1 were prepared: the method comprises the following steps of conveying a lower breathable layer 13, a hip protection layer 12 and an upper breathable layer 11 up and down in sequence, conveying first rubber 14 on two sides of the hip protection layer 12 respectively in sequence, spraying glue on the upper breathable layer 11, horizontally conveying the hip protection layer 12 and the first rubber 14, enabling the lower breathable layer 13 to incline downwards, enabling the upper breathable layer 11 to incline upwards to enter a compound roller mechanism, enabling the two first rubbers 14 to be located in a first annular groove 51 respectively, enabling a hip protection layer 1 to be located in a second annular groove 52, applying a drying agent 15 on the hip protection layer 12, compounding and overlapping the lower breathable layer 13, the hip protection layer 12, the two first rubbers 14 and the upper breathable layer 11 in sequence through the compound roller mechanism, fixing the two sides of the lower breathable layer 13 and the upper breathable layer 11 in a compounding mode through a compression roller mechanism, pressing and fixing the compounded hip protection layer 1 through a compression roller mechanism, and cutting the compounded layer to form a flaky hip protection part 1 through a first cutting roller mechanism;

(2) preparing a liquid-permeable surface layer 2 and a liquid-impermeable bottom layer 4;

(3) preparing a composite absorption core layer 3: the macromolecule blanking mechanism respectively blanks macromolecule materials onto two macromolecule carriers, the macromolecule materials form a longitudinal first diversion trench 310 on the upper layer absorption core 31 through the baffle mechanism, a longitudinal second diversion trench 320 is formed on the lower layer absorption core 32, the upper layer absorption core 31 and the lower layer absorption core 32 are compounded and fixed, meanwhile, two second rubbers 33 are synchronously conveyed, the two second rubbers 33 are respectively conveyed and fixed on the top of the lower layer absorption core 32, the two second rubbers 33 are positioned at two sides of the upper layer absorption core 31, the absorption core is cut into a flaky composite absorption core layer 3 through the second cutting roller mechanism, and the composite absorption core is placed on the liquid-impermeable bottom layer 4 through the second adsorption wheel;

(4) the liquid-permeable surface layer 2, the composite absorption core layer 3 and the liquid-impermeable bottom layer 4 are sequentially overlapped and compounded up and down, glue is sprayed on the side edge of the top of the flaky hip guard part 1, the two hip guards 1 are compounded on the liquid-permeable surface layer 2 after being turned over for 180 degrees through a first adsorption wheel, and then the flaky paper diaper body is cut through a third cutting roller mechanism.

Wherein, in the method (1), the following method can also be adopted, when the lower air-permeable layer 13, the hip protection layer 12, the two first rubbers 14 and the upper air-permeable layer 11 are sequentially compounded and superposed through a compound roller mechanism, the upper air-permeable layer 11 horizontally enters the compound roller mechanism, the hip protection layer 12, the first rubbers 14 and the lower air-permeable layer 13 obliquely and downwards enter the compound roller mechanism, the thickness of the first rubbers 14 is twice of the height of the hip protection layer 12, a roller above the compound roller mechanism is provided with a first annular groove 51 and a second annular groove 52, the top of the compound roller mechanism is positioned between the two first rubbers 14 to form a longitudinal hip protection groove 10, the bottom of the hip protection 1 on the paper diaper body forms the hip protection groove 10, one hip protection groove 10 can separate the hip from the liquid-permeable surface layer 2, the liquid on the compound absorption core layer 3 is not easy to contact with the hip, but the top of the hip protection groove 10 is not arranged, the hip protection groove 10 is arranged on the top of the hip, the quantity of the hip protection factors or the hip protection agents entering the skin of the baby is relatively large and is set according to the situation.

The working mode of the invention is as follows:

when the paper diaper is worn, the two buttocks are positioned at the buttocks protecting layer 1, the buttocks protecting layer 12 provides a small amount of buttocks protecting factors or buttocks protecting agents for the buttocks through the meshes of the upper breathable layer 11, the dosage of the buttocks protecting factors or the buttocks protecting agents provided by the mode is relatively small, and the diaper has a good buttocks protecting effect, the first rubber 14 has an isolating effect and can prevent liquid from flowing into the buttocks of a human body, the two buttocks protecting grooves 10 not only have a buffering and breathable effect, but also prevent liquid on the composite absorbing core layer 3 from flowing backwards easily to be contacted with the buttocks, so that the buttocks are isolated from the liquid-permeable surface layer 2, and the liquid is prevented from entering the buttocks. A small amount of liquid absorbed on the composite absorption core layer 3 is possibly guided to infiltrate into the wet liquid-permeable surface layer 2, the drying agent 15 can absorb a small amount of liquid on the dry liquid-permeable surface layer 2, the dryness of the hip protection part 1 is kept, the liquid is prevented from infiltrating into the hip protection part 1, and the hip protection effect is good; when the human body discharges liquid, a large amount of liquid enters the urination zone 30, the urination zone 30 has the function of buffering the liquid, most of the liquid enters the upper-layer absorption core 31 from the urination zone 30, the first diversion groove 310 of the upper-layer absorption core 31 has the function of diversion, part of the liquid enters the lower-layer absorption core 32 from the upper-layer absorption core 31 or the first diversion groove 310 thereof, and if the liquid amount is large, part of the liquid flows out to the second diversion groove 320 of the lower-layer absorption core 32 from two sides of the upper-layer absorption core 31.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. a preparation method of a butt-protecting diaper is characterized in that: comprising a diaper body and a diaper production device, and the diaper body has a longitudinal direction along the length direction and a transverse direction along the width direction, comprising the following methods:

(1) Preparation of two buttocks: the lower breathable layer, the buttocks layer, and the upper breathable layer are transported up and down in turn, the first rubber is transported on both sides of the buttocks layer in turn, spray glue on the upper breathable layer, and the lower breathable layer is , The buttocks layer, the two first rubbers, and the upper air-permeable layer are compounded and superimposed in turn through the compound roller mechanism. The lower and upper air-permeable layers are compounded and fixed on both sides, and the compounded buttocks are pressed and fixed by the pressure roller mechanism. The first cutting roller mechanism is used for cutting to form sheet-shaped buttocks;

Each of the buttocks includes an upper breathable layer, a buttocks layer, and a lower breathable layer that are stacked up and down in sequence. A first rubber is provided between the upper and lower breathable layers on both sides of the buttocks layer, and the upper breathable layer is provided with a first rubber. There are multiple mesh holes, and a butt-protecting factor or a butt-protecting agent is arranged on the buttocks;

The diaper production device includes two hip protection mechanisms, the two hip protection mechanisms are respectively synchronously producing the hip protection, and the produced sheet-shaped hip protection is synchronously sent to the first adsorption wheel; the pressing roller mechanism and the composite roller mechanism are respectively provided with The first ring grooves corresponding to the two first rubbers, and the second ring grooves corresponding to the buttocks are respectively provided on the pressing roller mechanism and the compound roller mechanism;

(3) Preparation of composite absorbing core layer: the polymer feeding mechanism feeds the polymer material onto two polymer carriers respectively, and the polymer material forms a longitudinal first diversion groove on the upper absorbing core through the baffle mechanism, A longitudinal second diversion groove is formed on the lower absorbent core, and the upper absorbent core and the lower absorbent core are compounded and fixed. At the same time, the two second rubbers are transported synchronously, and the two second rubbers are transported and fixed on the top of the lower absorbent core respectively. Two second rubbers are located on both sides of the upper absorbent core, the absorbent core is cut into sheet-like composite absorbent core layers by the second cutting roller mechanism, and the composite absorbent core is placed on the liquid-impermeable bottom layer by the second adsorption wheel;

The composite absorbent core layer includes an upper absorbent core and a lower absorbent core that are stacked up and down in sequence, the upper absorbent core is located in the middle of the top of the lower absorbent core, the width of the upper absorbent core is smaller than the width of the lower absorbent core, and the top of the lower absorbent core is located at the top of the upper absorbent core. There are second rubbers on both sides of the core;

(4) Lay the liquid-permeable surface layer, the composite absorbent core layer and the liquid-impermeable bottom layer up and down in turn, spray glue on the top side edge of the sheet-like butt-guard, and turn the two butt-guards 180 degrees through the first adsorption wheel It is then compounded on the liquid-permeable surface layer, and then cut into a sheet-shaped diaper body by the third cutting roller mechanism.

2. The preparation method of a butt-protecting diaper according to claim 1, characterized in that: in the method (1), the lower air-permeable layer, the butt-protection layer, the two first rubbers, and the upper air-permeable layer are compounded by a compound roller mechanism When superimposed, the hip protection layer and the first rubber are transported horizontally, the lower breathable layer is inclined downward, the upper breathable layer is inclined upward into the composite roller mechanism, and the height of the first rubber is twice the thickness of the hip protection layer; The rollers are provided with the first ring groove and the second ring groove, and the top and bottom are located between the two first rubbers to form longitudinal hip protection grooves respectively.

3. The preparation method of a kind of butt-protecting diaper according to claim 1, it is characterized in that: in method (1), the width of the lower breathable layer is greater than the width of the upper breathable layer, the lower breathable layer, the butt-protecting layer, the two When the first rubber and the upper air-permeable layer are laminated and stacked in sequence through the composite roller mechanism, the upper air-permeable layer enters the composite roller mechanism horizontally, and the buttocks layer and the first rubber and lower air-permeable layer enter the composite roller mechanism obliquely downward, and the thickness of the first rubber is Twice the height of the buttock layer, the roller above the composite roller mechanism is provided with the first ring groove and the second ring groove, and the top of the composite roller is located between the two first rubbers to form a longitudinal buttock groove. The diaper body The bottom of the buttock protector on the upper part forms the butt protector groove.

4. The method for preparing a butt-protecting diaper according to claim 1, 2 or 3, wherein the number of the first diversion grooves is three, and the width of the first diversion groove in the middle is greater than two The width of the first guide groove on the side, the number of the second guide groove is five, and the width of the second guide groove gradually decreases along the two sides.

5 . The method for preparing a butt-protecting diaper according to claim 4 , wherein the first guide grooves on both sides respectively overlap with the two second guide grooves along the projection of the surface of the lower absorbent core. 6 . part.

6. The preparation method of a kind of butt-protecting diaper according to claim 1, characterized in that: in the method (1), before the lower breathable layer and the butt-protecting layer are compounded, a desiccant is applied on the butt-protecting layer, and then compounded , a desiccant is arranged between the lower breathable layer and the butt protection layer.

7 . The method for preparing a butt-protecting diaper according to claim 1 , wherein the two side edges of the upper absorbent core are respectively located above the two second diversion grooves. 8 .

8. The preparation method of a butt-protecting diaper according to claim 1, wherein the height of the second rubber is 1.5 to 3 times the thickness of the upper absorbent core, and the top of the diaper body is located between the two second rubbers A longitudinal voiding zone is formed.

9 . The method for preparing a butt-protecting diaper according to claim 1 , wherein the height of the first rubber is at least 1.5 times the thickness of the butt-protecting layer, and the thickness of the butt-protecting layer is 3 mm to 10 mm. 10 .

10 . The method for preparing a butt-protecting diaper according to claim 1 , wherein the structure of the pressing roller mechanism is the same as that of the composite roller mechanism, and the distance between the two rollers of the composite roller mechanism is greater than the distance between the two rollers of the pressing roller mechanism. 11 . .