CN113730107A

CN113730107A - Absorption core and process production line thereof

Info

Publication number: CN113730107A
Application number: CN202111105133.1A
Authority: CN
Inventors: 金昌飞; 吕庆; 潘恒; 余凌云; 朱振良
Original assignee: Anqing Hengchang Machinery Co Ltd
Current assignee: Anqing Hengchang Machinery Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2021-12-03

Abstract

The invention provides an absorption core and a process production line thereof, wherein the absorption core comprises an upper coating layer, an absorption layer and a lower coating layer which are sequentially arranged from top to bottom; wherein, the absorption layer comprises fluff pulp, chemical fiber and macromolecular water-absorbing resin. According to the absorption core body provided by the invention, the chemical fiber is added into the absorption layer, so that the using amount of fluff pulp is reduced, the thickness of the absorption core body after liquid is absorbed is reduced, and the chemical fiber, the fluff pulp and the high-molecular water-absorbent resin are fully mixed, so that the absorption core body has the characteristics of good flow guide diffusion performance, high permeation speed, small reverse osmosis amount, reduced fluff pulp content and high product softness by utilizing the characteristics of poor water absorption and good flow guide performance of the chemical fiber, and the product quality and the wearing comfort are improved.

Description

Absorption core and process production line thereof

Technical Field

The invention relates to the technical field of hygienic products, in particular to an absorption core body and a process production line thereof.

Background

Absorbent cores are used in many disposable hygiene products, such as diapers, puerperal pads, medical surgical pads, sanitary napkins, pet pads, and even disposable dining table pads.

The absorbent core is the most important component of disposable absorbent articles, and the performance of disposable absorbent articles is mainly determined by the absorbent core, such as the water absorption, retention, diffusion and the like of the disposable absorbent articles.

One structural form of the existing absorption core is an absorption core form of fluff pulp and high molecular water-absorbent resin, and the absorption core in the form has the following defects: firstly, in order to fix the polymer in the core and to ensure that the core does not generate phenomena such as fault after absorbing water, enough fluff pulp must be added to realize the requirements; secondly, the increased fluff pulp content leads to an increased thickness of the whole core, reducing the comfort of wearing, so that consumers currently demand thinner absorbent articles; to meet consumer demand, manufacturers typically reduce the thickness of absorbent articles by making composite cores; in the prior art, the composite core body is mostly composed of an upper layer material, a middle layer bulky non-woven fabric, a high molecular water-absorbent resin and a lower layer material, and the upper layer material, the middle layer bulky non-woven fabric and the lower layer material of the absorption core body are generally compounded together by adopting an adhesive; although the absorption core of the composite core body is thinner, the high molecular water-absorbent resin cannot be uniformly combined with the bulky non-woven fabric, so that the contact surface of the manufactured high molecular composite absorption core body with a user is uneven after the manufactured high molecular composite absorption core body absorbs liquid, and the use comfort of the absorption core body is influenced.

Disclosure of Invention

The problem addressed by the invention is to improve the comfort of use of an absorbent core.

In order to solve the above problems, the present invention provides an absorption core, which comprises an upper coating layer, an absorption layer and a lower coating layer, which are sequentially arranged from top to bottom; wherein the content of the first and second substances,

the absorption layer comprises fluff pulp, chemical fibers and high-molecular water-absorbing resin.

Optionally, the absorption layer comprises an upper absorption layer and a lower absorption layer which are attached to each other, the upper absorption layer is attached to the upper coating layer, and the lower absorption layer is attached to the lower coating layer; the upper absorbent layer comprises the chemical fibers; the lower absorption layer is a mixture of the fluff pulp and the high-molecular water-absorbent resin.

Optionally, the upper absorption layer further includes a high-molecular water-absorbent resin, and the upper absorption layer is a mixture of the chemical fiber and the high-molecular water-absorbent resin.

The invention also aims to provide a process production line of the absorption core body, which comprises a raw material mixing unit, a forming hub, an upper coating conveying roller, a lower coating conveying roller, a composite transfer wheel, a conveying device and a wrapping and folding device which are sequentially and adjacently arranged; and glue applying devices are arranged above the upper coating conveying roller, above the lower coating conveying roller and above the wrapping and folding device.

Optionally, a compaction device is also included, the compaction device being disposed adjacent to the composite transfer wheel.

Optionally, the raw material mixing unit comprises a fluff collecting bin, and a fluff pulp applying device, a chemical fiber applying device, a high polymer water-absorbing resin applying device, a fan and a mixing and stirring device which are connected with the fluff collecting bin; the down collecting bin is connected with the forming hub.

Optionally, the chemical fiber applying device is connected with the fluff collecting bin through a first pipeline, and the fluff pulp applying device is connected with the first pipeline through a second pipeline.

Optionally, the high molecular water absorbent resin applying device is connected to the first pipeline.

Optionally, the mixing and stirring device is disposed on the first pipeline; the mixing and stirring device is adjacent to the fluff collecting bin.

Optionally, the chemical fiber applying device is connected to the fluff collecting bin through a third pipeline, and the polymeric water-absorbent resin applying device, the blower and the mixing and stirring device are all connected to the third pipeline; the fluff pulp applying device is connected with the fluff collecting bin.

Compared with the prior art, the absorption core provided by the invention has the following advantages:

according to the absorption core body provided by the invention, the chemical fiber is added into the absorption layer, so that the using amount of fluff pulp is reduced, the thickness of the absorption core body after liquid is absorbed is reduced, and the chemical fiber, the fluff pulp and the high-molecular water-absorbent resin are fully mixed, so that the absorption core body has the characteristics of good flow guide diffusion performance, high permeation speed, small reverse osmosis amount, reduced fluff pulp content and high product softness by utilizing the characteristics of poor water absorption and good flow guide performance of the chemical fiber, and the product quality and the wearing comfort are improved.

Drawings

FIG. 1 is a schematic view of an absorbent core according to the present invention;

FIG. 2 is a schematic view of a second configuration of an absorbent core of the present invention;

FIG. 3 is a schematic view of the structure of an absorbent core of the present invention;

FIG. 4 is a first schematic structural view of an absorbent core process line of the present invention;

FIG. 5 is a schematic structural view of a second absorbent core manufacturing line of the present invention;

FIG. 6 is a schematic structural view of a third absorbent core processing line of the present invention;

fig. 7 is a fourth schematic structural view of an absorbent core process line of the present invention.

Description of reference numerals:

1-an absorbent core; 11-coating layer; 12-an absorbent layer; 13-lower coating layer; 14-bending part; 2-a raw material mixing unit; 21-a fluff collecting bin; 22-fluff pulp application device; 221-a second conduit; 222-a fourth conduit; 23-a chemical fiber application device; 231-a first conduit; 232-third line; 24-a macromolecular water-absorbent resin application device; 25-a fan; 26-a mixing and stirring device; 3-forming a hub; 4-upper coating conveying roller; 5-lower coating conveying roller; 6-a composite transfer wheel; 7-a conveying device; 8-wrapping and folding device; 9-a compacting device; 100-a sizing device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.

Furthermore, the terms "first" and "second" are used merely to simplify the description and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the first feature being "on" or "under" the first feature may comprise the first feature being in direct contact with the second feature or the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "below," and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

The existing composite absorption core body has poor use comfort, and the transportation cost is high due to the fact that the organization structure of the middle-layer fluffy non-woven fabric in the absorption core body is too loose; the bulky non-woven fabric occupies a larger volume, so that the overall thickness of the product is increased, and the comfort level is further reduced; in the existing composite core body manufacturing process, after a wide material is mostly used for integral manufacturing, the composite core body is cut and rolled, the efficiency is low, the online high-speed manufacturing is difficult to realize, and simultaneously, a large amount of high-molecular water-absorbent resin is easy to leak in the cutting process to cause waste.

In order to solve the problem of poor comfort in use of the existing absorption core, the invention provides an absorption core 1, as shown in fig. 1 to 3, the absorption core 1 comprises an upper coating layer 11, an absorption layer 12 and a lower coating layer 13 which are sequentially arranged from top to bottom; wherein, the material of the upper coating layer 11 and the lower coating layer 13 can be one of non-woven fabric, dust-free paper and wet wallpaper, and the material of the upper coating layer 11 can be the same as or different from that of the lower coating layer 13; in the present application, the upper coating layer 11 and the lower coating layer 13 are preferably made of non-woven fabrics; the absorbed layer 12 is used for the imbibition, for improving the comfort level that absorbed core 1 used, and the absorbed layer 12 is preferred in this application includes fluff pulp, chemical fiber and polymer water absorption resin, and absorbed layer 12 is the mixture that fluff pulp, chemical fiber and polymer water absorption resin formed promptly.

The bonding mode between the upper coating layer 11 and the absorption layer 12 and between the absorption layer 12 and the lower coating layer 13 can be thermal compression bonding, ultrasonic bonding or adhesive bonding, and the preferred bonding mode in the application is thermal compression bonding or adhesive bonding.

The high molecular water-absorbing resin is the main liquid-absorbing medium in the absorption layer 12, and the high molecular water-absorbing resin is preferably high molecular water-absorbing resin particles; the high molecular water-absorbing resin can be a synthetic resin which has hydrophilic groups and can absorb a large amount of water, and the high molecular water-absorbing resin is preferably selected from one of starch grafted acrylate resin, starch grafted acrylamide resin and cross-linked carboxymethyl cellulose grafted acrylamide resin; the fluff pulp is plant fiber, so that the fluff pulp has a certain water absorption function, and meanwhile, the fluff pulp is added, so that the fixation of the high-molecular water-absorbent resin is facilitated; this application further adds chemical fiber, utilize the excellent water conservancy diversion performance of chemical fiber, through mixing chemical fiber and fluff pulp and polymer water-absorbing resin, under chemical fiber's water conservancy diversion effect, make liquid can be in absorbing core 1 even quick scatter, prevent too slow because of the diffusion rate of liquid, lead to liquid can only be absorbed in absorbing certain region in core 1, and then lead to absorbing the regional humidity grow of this absorption liquid of core, the surface becomes unsmooth, influence practical function and comfort level of use.

In order to ensure the diffusion speed, the chemical fiber is preferably water-repellent chemical fiber or weakly-hydrophilic chemical fiber, and the liquid can be promoted to rapidly diffuse in the absorption core body 1 by utilizing the characteristics of poor water absorption performance and good flow guide performance of the water-repellent chemical fiber or the weakly-hydrophilic chemical fiber; in order to guarantee the uniformity of liquid distribution in the absorption core body 1, the chemical fiber that this application prefers to add is the short-staple, this chemical fiber is the chemical fiber that obtains after the long fiber is smashed, so that improve the chemical fiber and fluff pulp and the mixed degree of consistency of polymer water-absorbing resin, thereby make liquid diffuse to each region of absorption core body 1 rapidly through chemical fiber, guarantee that the humidity difference in each region is not big, and then guarantee that absorption core body 1 absorbs liquid after, the surface still can keep level and smooth, improve the comfort level of using.

The application prefers that the chemical fiber is polyester fiber or acetate fiber; the mixing ratio of the fluff pulp, the high-molecular water-absorbent resin and the chemical fiber in the absorption layer 12 can be freely selected to meet different use requirements of customers, and the application does not specifically limit the mixing ratio.

According to the absorption core body 1 provided by the invention, the chemical fiber is added into the absorption layer 12, so that the consumption of fluff pulp is reduced, the thickness of the absorption core body 1 after absorbing liquid is reduced, and the chemical fiber, the fluff pulp and the high-molecular water-absorbent resin are fully mixed, so that the absorption core body 1 has the characteristics of good flow guide diffusion performance, high permeation speed, small reverse permeation amount, fluff pulp content reduction and high product softness by utilizing the characteristics of poor water absorption and good flow guide performance of the chemical fiber, and the product quality and the wearing comfort level are improved.

In addition, through adding chemical fiber in the absorbed layer 12, because cohesive force has between the fibre, behind the absorbed liquid, can not take place to shift in the absorbed layer 12, play the group, play to stick together, or even fault phenomenon, simultaneously, because chemical fiber's water conservancy diversion effect, can be with liquid to the both ends diffusion of absorbed layer 12 rapidly, make the absorption speed of absorption core 1 promote by a wide margin to make the surface of absorption core 1 drier and more comfortable, thereby improve the comfort level of using.

In the absorbent core 1 provided by the present application, the absorbent layer 12 may be an integral structure, that is, the structures of all the parts in the absorbent layer 12 are the same, or may be a double-layer structure; when the absorption layer 12 is a double-layer structure, the absorption layer 12 preferably includes an upper absorption layer and a lower absorption layer which are attached to each other, wherein the upper absorption layer is attached to the upper coating layer 11, and the lower absorption layer is attached to the lower coating layer 13; the upper absorption layer can be chemical fiber or a mixture of the chemical fiber and the high-molecular water-absorbent resin, so that the liquid can be rapidly diffused to each area in the absorption layer 12 by utilizing the characteristic of good conductivity of the chemical fiber, and the flatness of the upper absorption layer after the liquid is absorbed is kept, so that the use comfort level is ensured; simultaneously, the preferred lower absorption layer is the mixture of fluff pulp and polymer water-absorbing resin, utilizes the excellent water absorption performance of lower absorption layer, can absorb the liquid after the upper absorption layer water conservancy diversion for the upper absorption layer keeps dry and comfortable, thereby guarantees the comfort level of using.

Furthermore, in the absorbent core 1 provided by the present application, the absorbent layer 12 may also be configured to have a structure that does not contain the high molecular water absorbent resin at both ends, so that the cutter can cut the area containing the high molecular water absorbent resin in the subsequent cutting process, thereby reducing the leakage of the high molecular water absorbent resin.

In the absorbent core 1 provided by the present application, after the upper coating layer 11, the absorbent layer 12 and the lower coating layer 13 are combined, as shown in fig. 1, both sides of the composite core may be bonded and sealed by means of adhesive bonding, ultrasonic bonding, thermocompression bonding, etc. to prevent leakage of the high molecular water absorbent resin.

In the present application, at least one of the upper cladding layer 1 and the lower cladding layer 13 is preferably bent at both sides toward the center direction, so as to cover the absorption layer 12.

Specifically, the width of the lower coating layer 13 may be greater than the widths of the upper coating layer 11 and the absorption layer 12, the width of the upper coating layer 11 may be greater than the widths of the lower coating layer 13 and the absorption layer 12, and the widths of the upper coating layer 11 and the lower coating layer 13 may be greater than the widths of the absorption layer 12, so that after the upper coating layer 11, the absorption layer 12 and the lower coating layer 13 are combined, the wider coating layer is continuously folded back at the edge of the absorption layer 12 by a folding device, so that both sides of the absorption layer 12 are covered by the coating layers, thereby preventing the leakage of the high molecular water absorbent resin in the absorption layer 12; further, the upper cover layer 11 and the lower cover layer 13 may cover the absorbent layer 12 by hot press bonding, ultrasonic bonding, and adhesive bonding.

In addition, the widths of the upper covering layer 11, the absorption layer 12 and the lower covering layer 13 may be the same or substantially the same, and after three layers are combined, the side edge portions of the combined core are continuously folded back by a folding device, so that the absorbent core 1 forms a double-layer absorbent structure, and the water absorption performance of the absorbent core 1 is improved.

Further, referring to fig. 3, the absorbent core 1 provided by the present application may also take the following structural form: the two ends of the upper cladding layer 11 and the absorption layer 12 are bent downwards to form two bent parts 14; the two bent portions 14 are both attached to the absorbent layer 12; the lower surfaces of the two bent portions 14 are bonded to the lower cladding layer 13.

Specifically, the upper coating layer 11 and the absorption layer 12 may be first compounded, both sides of the core body after compounding are folded and coated together to form the bending portion 14, and then the lower coating layer 13 is compounded with the core body after bending.

The absorption core body 1 with the structure form forms a groove structure, the integrity of the core body is kept, a flow guide channel is formed below the absorption core body, the core body with the same weight or the same formula is thinner before being coated, the expansion force is lower after water absorption, the core body is less prone to faults and lumps, and the comfort level of use is improved.

Another object of the present invention is to provide a process line for manufacturing absorbent cores as described above, as shown in fig. 4 to 6, which comprises a raw material mixing unit 2, a forming hub 3, an upper coating layer conveying roller 4, a lower coating layer conveying roller 5, a composite transfer wheel 6, a conveying device 7 and a wrapping device 8, which are adjacently arranged in sequence; glue applying devices 100 are arranged above the upper cladding conveying roller 4, the lower cladding conveying roller 5 and the wrapping and folding device 8, so that glue can be applied by the glue applying devices 100 respectively to realize glue adhesion; and preferably, the upper clad conveyor roll 4 and the remaining lower clad conveyor rolls 4 are respectively located on both sides of the composite transfer wheel 6.

Specifically, in the working process of the production line of the process, firstly, fluff pulp, high-molecular water-absorbent resin and chemical fiber are fully mixed according to a proportion through a raw material mixing unit 2, then the mixed raw materials are conveyed to a forming hub 3, and the forming hub 3 can be a forming hub with any structural form suitable for manufacturing an absorption core in the prior art; forming the mixed raw material by forming the hub 3 to form the absorption layer 12; the forming hub 3 is abutted against the composite transfer wheel 6, and simultaneously, the upper coating layer conveying roller 4 conveys the upper coating layer 11 to a position between the forming hub 3 and the composite transfer wheel 6, and glue is applied to the upper coating layer 11 through a glue applying device 100 positioned above the upper coating layer conveying roller 4; with the rotation of the forming hub 3 and the upper coating layer 11, the forming hub 3 outputs the formed absorption layer 12, and when the forming hub 3 drives the absorption layer 12 to rotate to the compounding point of the compound transfer wheel 6, the output absorption layer 12 is contacted with the upper coating layer 11 and is bonded with the upper coating layer 11, so that the compounding of the upper coating layer 11 and the absorption layer 12 is realized; meanwhile, the upper coating layer 11 wraps the composite transfer wheel 6 to continue rotating at the same speed; the lower clad conveying roller 5 conveys the lower clad 13 to the composite transfer wheel 6, and the lower clad 13 is glued by a glue applicator 100 positioned above the lower clad conveying roller 5; when the lower coating conveying roller 5 conveys the sized lower coating 13 to the composite transfer wheel 6, the lower coating 13 covers the composite body of the absorption layer 12 and the upper coating 11, and then a composite core body with the upper coating 11, the absorption layer 12 and the lower coating 13 sequentially attached is obtained; the compounded composite core body wraps the composite transfer wheel 6 to continue rotating and is conveyed to the conveying device 7; the conveying device 7 conveys the composite core body to the wrapping and folding device 8, and the composite core body is correspondingly wrapped and folded by the wrapping and folding device 8, so that the absorption core body 1 can be obtained.

The glue applying device 100 is arranged above the wrapping and folding device 8 so as to apply glue to the area to be wrapped and folded before wrapping and folding, thereby realizing wrapping and folding adhesion.

The wrapping and folding mode of the wrapping and folding device 8 can be determined according to the specific structure of the absorption core body 1; for example, at least one of the upper covering layer 11 and the lower covering layer 13 may be continuously folded back in the material direction at the side edge portion of the absorbent layer 12 by the folding device 8 so that both sides of the absorbent layer 12 are covered with the covering layer to prevent the leakage of the water absorbent polymer resin; specifically, if the widths of the upper coating layer 11 and the lower coating layer 13 are both larger than the width of the absorption layer 12, only the coating layer at the edge of the absorption layer 12 is covered when passing through the wrapping and folding device 8; alternatively, the upper covering layer 11 and the absorbent layer 12 may be folded and covered with the lower covering layer 13, so that the absorbent core 1 includes a groove; the two sides of the complex can be bonded by means of adhesive bonding, ultrasonic bonding or hot-pressing bonding without wrapping, so that the leakage of the high-molecular water-absorbent resin can be prevented.

The upper coating conveying roller 4, the lower coating conveying roller 5, the composite transfer wheel 6, the conveying device 7, the wrapping and folding device 8 and the glue applying device 100 in the application can all adopt the existing equipment in the prior art; moreover, the sequence of the components in the process production line can be adjusted correspondingly according to the structure and the field of the absorbent core body 1.

The process production line of the absorption core body 1 provided by the invention can realize continuous online production of the absorption core body 1, is beneficial to improving the production speed and reducing the production cost; meanwhile, the absorption core body 1 produced by the process production line is beneficial to reducing the using amount of fluff pulp by adding the chemical fiber into the absorption layer 12, thereby reducing the thickness of the absorption core body 1 after absorbing liquid, and on the other hand, the chemical fiber, the fluff pulp and the high polymer water-absorbent resin are fully mixed, and the characteristics of poor water absorption and good flow conductivity of the chemical fiber are utilized, so that the absorption core body 1 has the characteristics of good flow conductivity and diffusion performance, high permeation speed, small reverse osmosis amount, fluff pulp content reduction and high product softness, and the product quality and the wearing comfort level are improved.

Further, the absorption core process production line provided by the application further comprises a compaction device 9, wherein the compaction device 9 is arranged adjacent to the composite transfer wheel 6, so that after the upper coating layer 11, the absorption layer 12 and the lower coating layer 13 are compounded to form the composite core, the composite core is compacted by the compaction device 9 and then conveyed to the conveying device 7 in the process that the composite core is wrapped by the composite transfer wheel 6 to rotate; wherein the compacting roller of the compacting device 9 can be a heating roller or not; the compacting roller of the compacting device 9 may be a smooth roller or a patterned roller, depending on the specific requirements.

The raw material mixing unit 2 preferably comprises a fluff collecting bin 21, and a fluff pulp applying device 22, a chemical fiber applying device 23, a high-molecular water-absorbent resin applying device 24, a fan 25 and a mixing and stirring device 26 which are connected with the fluff collecting bin 21; the fluff collecting bin 21 is connected with the forming hub 3.

Wherein, the fluff collecting bin 21, the fluff pulp applying device 22, the chemical fiber applying device 23 and the high molecular water-absorbent resin applying device 24 can all adopt the equipment which is suitable for the process production line in the prior art.

After raw material fluff pulp, chemical fiber and high-molecular water-absorbing resin are respectively added to the time raw material in the fluff collecting bin 21 according to the adding proportion through the fluff pulp applying device 22, the chemical fiber applying device 23 and the high-molecular water-absorbing resin applying device 24, the fluff pulp, the chemical fiber and the high-molecular water-absorbing resin are mixed in the fluff collecting bin 21 to form a mixture of the raw materials, and the mixture is adsorbed on the molding hub 3 to form the absorbing layer 12.

Wherein the fluff pulp applying device 22 and the chemical fiber applying device 23 may have a pulverizing structure so as to pulverize the fluff pulp and the chemical fiber respectively and then add them; alternatively, the fluff pulp and the chemical fibers may be pulverized and then added by the fluff pulp applying device 22 and the chemical fiber applying device 23, respectively, to improve the mixing effect and improve the softness and the flow guiding performance of the absorbent layer 12.

In order to improve the mixing degree of the raw materials, a mixing and stirring device 26 can be arranged on the fluff collecting bin 21, so that the three raw materials can be fully mixed through the mixing and stirring device 26.

Furthermore, according to the specific structure of the absorption layer 12, a corresponding adjusting partition plate can be arranged in the fluff collecting bin 21 to divide the fluff collecting bin 21 into two channels, so that the raw materials in different channels are different in composition, and the raw materials in different areas in the absorption layer 12 are different in composition; such as by providing the absorbent layer 12 with a layered structure as described above, and the like.

The fluff pulp applying device 22, the chemical fiber applying device 23 and the high-molecular water-absorbent resin applying device 24 in the application can be directly connected with the fluff collecting bin 21, and can also be connected with the fluff collecting bin 21 through corresponding pipelines.

One way of connecting the fluff collecting bin 21 by means of a pipe is that, as shown in fig. 4 and 5, the chemical fiber applying device 23 is connected to the fluff collecting bin 21 by means of a first pipe 231, and the fluff pulp applying device 22 is connected to the first pipe 231 by means of a second pipe 221, so that the fluff pulp applying device 22 conveys the fluff pulp into the first pipe 231 by means of the second pipe, so that the fluff pulp is mixed with the chemical fiber in the first pipe 231.

The high molecular water-absorbent resin application device 24 may be directly connected to the fluff collecting chamber 21 or may be connected to the first pipe 231.

Further, it is preferable that the mixing and stirring device 26 is disposed on the first pipe 231, and the mixing and stirring device 26 is disposed adjacent to the flock collecting bin 21.

By arranging the mixing and stirring device 26 on the first pipeline 231, the raw materials are fully mixed and stirred by the mixing and stirring device 26, and then the fully mixed raw materials are input into the fluff collecting bin 21 by the fan 25.

As shown in fig. 4, when the high molecular water-absorbent resin applying device 24 is directly connected to the fluff collecting bin 21, the chemical fiber and the fluff pulp are fully mixed by the mixing and stirring device 26, and then the mixture formed by the chemical fiber and the fluff pulp is connected to the high molecular water-absorbent resin, which is helpful for improving the mixing degree of the chemical fiber and the fluff pulp, thereby improving the cohesive force of the absorbing layer 12 and the structural stability of the absorbing core 1.

Referring to fig. 5, when the polymeric water-absorbent resin application device 24 is connected to the first pipeline 231, the three raw materials are fully mixed by the mixing and stirring device 26, so that the three raw materials can be uniformly mixed, and on one hand, the operation is simple, and on the other hand, the same performance of each region in the absorption layer 12 can be ensured.

Another way to connect with the fluff collecting bin 21 through a pipeline is that, referring to fig. 6 and 7, the chemical fiber applying device 23 is connected with the fluff collecting bin 21 through a third pipeline 232, and the high molecular water-absorbent resin applying device 24, the blower 25 and the mixing and stirring device 26 are all connected to the third pipeline 232; the fluff pulp applying device 22 is connected with the fluff collecting bin 21; the fourth conduit 222, through which the fluff pulp application device 22 can be passed, is connected to the fluff collecting chamber 21, or can be connected directly to the fluff collecting chamber 21.

Referring to fig. 6, when the fluff pulp application device 22 is connected to the fluff collecting bin 21 through the fourth pipeline 222, two ports are provided on the fluff collecting bin 21, one port is connected to the fluff pulp application device 22, and fluff pulp is applied into the fluff collecting bin 21 through the port; the other interface is connected with an outlet of the fan 25, a chemical fiber applying device 23 and a high-molecular water-absorbent resin applying device 24 are arranged in front of the fan 25, the chemical fiber applying device 23 and the high-molecular water-absorbent resin applying device 24 respectively convey chemical fibers and high-molecular water-absorbent resin according to an adding proportion, the chemical fibers and the high-molecular water-absorbent resin are fully mixed by a mixing and stirring device 26, the mixed raw materials are conveyed into a fluff collecting bin 21 through the fan 25, the mixed chemical fibers and the high-molecular water-absorbent resin are further mixed with fluff pulp, and the fluff pulp is adsorbed on the forming hub 3 through negative pressure to form an absorbing layer 12.

Referring to fig. 7, when the fluff pulp application device 22 is directly connected to the fluff collecting bin 21, the chemical fiber application device 23 and the high molecular water absorbent resin application device 24 respectively deliver the chemical fiber and the high molecular water absorbent resin according to the addition ratio, and the blower 25 delivers the mixed chemical fiber and the high molecular water absorbent resin to the fluff pulp application device 22, so that the three materials start to be mixed in the fluff pulp application device 22, and then delivers the fully mixed materials to the fluff collecting bin 21; in this embodiment, chemical fiber and polymer water-absorbing resin can mix the fluff pulp in the very first time when finishing smashing, and then make the mixture of three kinds of materials more even.

Based on chemical fiber's water conservancy diversion effect and polymer water absorbent resin's water absorption, this application is through earlier mixing chemical fiber and polymer water absorbent resin, further mixes the mixture of the two with the fluff pulp again, helps improving chemical fiber and polymer water absorbent resin's misce bene degree to in the use, through chemical fiber water conservancy diversion's liquid can be rapidly even by polymer water absorbent resin absorption, improve the comfort level of using.

The mixing and adding manner of the above raw materials can be selected according to the specific requirements of the absorbent core 1.

The process production line of the absorption core body can realize the continuous production of the absorption core body 1 through the combination of the existing equipment, and has the advantages of high manufacturing precision, good product molding and high production efficiency; in addition, the user can freely adjust the mixing proportion of the raw materials of the absorption layer 12 according to the specific requirements of the user so as to meet the use requirements of different absorption core bodies 1; the absorption core body 1 produced by the process production line can meet the requirements of the U-shaped test method for detecting the detection indexes of the absorption performance and the diffusion function of the absorption core body 1 in new national standards.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. An absorption core body is characterized by comprising an upper coating layer (11), an absorption layer (12) and a lower coating layer (13) which are arranged from top to bottom in sequence; wherein the content of the first and second substances,

the absorption layer (12) comprises fluff pulp, chemical fibers and high-molecular water-absorbing resin.

2. The absorbent core according to claim 1, wherein said absorbent layer (12) comprises an upper absorbent layer and a lower absorbent layer attached to each other, said upper absorbent layer being attached to said upper covering layer (11), said lower absorbent layer being attached to said lower covering layer (13); the upper absorbent layer comprises the chemical fibers; the lower absorption layer is a mixture of the fluff pulp and the high-molecular water-absorbent resin.

3. The absorbent core of claim 2 wherein said upper absorbent layer further comprises a polymeric water absorbent resin, said upper absorbent layer being a mixture of said chemical fibers and said polymeric water absorbent resin.

4. A process line for manufacturing absorbent cores according to any of claims 1 to 3, comprising a raw material mixing unit (2), a forming hub (3), an upper cover conveying roller (4), a lower cover conveying roller (5), a composite transfer wheel (6), a conveying device (7) and a wrapping and folding device (8) which are arranged adjacently in sequence; glue applying devices (100) are arranged above the upper coating conveying roller (4), above the lower coating conveying roller (5) and above the wrapping and folding device (8).

5. A process line for absorbent cores according to claim 4, further comprising a compacting device (9), said compacting device (9) being arranged adjacent to said composite transfer wheel (6).

6. The process line for manufacturing absorbent cores according to claim 4, wherein said raw material mixing unit (2) comprises a fluff collecting bin (21), and a fluff pulp application device (22), a chemical fiber application device (23), a high molecular water absorbent resin application device (24), a fan (25), a mixing and stirring device (26) connected to said fluff collecting bin (21); the down collecting bin (21) is connected with the forming hub (3).

7. A process line for absorbent cores according to claim 6, wherein the chemical fibre application means (23) is connected to the fluff collecting chamber (21) via a first conduit (231) and the fluff pulp application means (22) is connected to the first conduit (231) via a second conduit (221).

8. The manufacturing line for absorbent cores as claimed in claim 7, characterized in that said polymeric water-absorbent resin application device (24) is connected to said first conduit (231).

9. Process line for manufacturing absorbent cores according to claim 7 or 8, wherein the mixing and stirring device (26) is arranged on the first line (231); the mixing and stirring device (26) is arranged adjacent to the fluff collecting bin (21).

10. A process line for manufacturing absorbent cores according to claim 6, wherein said chemical fiber application device (23) is connected to said fluff collecting chamber (21) through a third line (232), said polymeric water-absorbent resin application device (24), said blower (25) and said mixing and stirring device (26) being connected to said third line (232); the fluff pulp application device (22) is connected with the fluff collecting bin (21).