CN109620546A

CN109620546A - Water-absorption core body and its preparation method and application

Info

Publication number: CN109620546A
Application number: CN201910079761.3A
Authority: CN
Inventors: 陈建辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2019-04-16
Anticipated expiration: 2039-01-28
Also published as: CN109620546B

Abstract

The present invention relates to a kind of Water-absorption core bodies and its preparation method and application.The preparation method of the Water-absorption core body includes the following steps: to be laid on after chemical fibre is pulled loose and combed on the first guide layer that the first mixed material forms to form fluffy cotton layer, obtains first layer overlapping piece；First layer overlapping piece progress hot wind is penetrated into sizing, is then laid with hydroscopic high-molecular resin powder on fluffy cotton layer, so that hydroscopic high-molecular resin powder is dispersed in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water absorption layer be collectively formed；Second mixed material is formed, then hot wind penetrates sizing, the second guide layer is layered on water absorption layer, obtains the second laminates by the second guide layer of formation, wherein the first mixed material and the second mixed material include Time of Fluff Slurry and meldable fibre；Second laminates are successively penetrated into sizing through hot wind, obtain Water-absorption core body.Be not easy to be layered after the water swelling of above-mentioned Water-absorption core body, soaking effect preferably and water lock effect is preferable.

Description

Water-absorption core body and its preparation method and application

Technical field

The present invention relates to hygiene article sectors, more particularly to a kind of Water-absorption core body and its preparation method and application.

Background technique

In general, the needs such as paper diaper, sanitary napkin have preferable water absorbing properties, therefore general all with Water-absorption core body.Mesh Before, there are mainly two types of the production methods of Water-absorption core body, a kind of mode be using villus paddle and hydroscopic high-molecular resin (SAP, SUPERABSORBENTPOLYMER) on-line mixing forms, although at low cost, product diffusion is fast, multiple good absorption effect, For water-absorbing resin after water swelling, the connectivity between Time of Fluff Slurry is poor and is easily broken off and rises the problem of cutting or polish jade with an emery wheel, and not only influences to use Comfort level, and have an effect on effective storage life, in order to avoid playing stone roller, producer just reduces the dosage of water-absorbing resin, but It reduces the water absorption of product and using the time, assimilation effect is bad.Another way is to fix SAP using loft non-woven cloth, And be respectively adopted the composite puffed paper of thermosol (or dust-free paper, non-woven fabrics etc.) in upper and lower surface, product is obtained after winding cutting, though The fracture for the product that right this method obtains and the problem of playing stone roller, are improved, but after hydroscopic high-molecular resin water swelling point Layer is obvious, and repeatedly soaking effect is poor, and water lock effect is poor, and causes reverse osmosis serious.

Summary of the invention

Based on this, it is necessary to provide be not easy after a kind of water swelling to be layered, soaking effect preferably and water lock effect is preferable The preparation method of Water-absorption core body.

In addition, also providing a kind of Water-absorption core body and its application.

A kind of preparation method of Water-absorption core body, includes the following steps:

First mixed material is formed to form the first guide layer, first mixed material includes that Time of Fluff Slurry and hot melt are fine Dimension；

It is laid on after chemical fibre is pulled loose and combed on first guide layer to form fluffy cotton layer, obtains first layer Overlapping piece；

First layer overlapping piece progress hot wind is penetrated into sizing, the first layer overlapping piece being formed；

It is laid with hydroscopic high-molecular resin powder on the fluffy cotton layer of the first layer overlapping piece of sizing, so that the height Molecule water-absorbing resin powder is dispersed in the fluffy cotton layer, and keeps the hydroscopic high-molecular resin powder and the fluffy cotton layer common Form water absorption layer；

Second mixed material is formed, hot wind is then carried out and penetrates sizing, to form the second guide layer, second mixing Material includes Time of Fluff Slurry and meldable fibre；

Second guide layer is layered on the water absorption layer, the second laminates are obtained；And

Second laminates progress hot wind is penetrated into sizing, obtains Water-absorption core body.

In one of the embodiments, in described the step of first layer overlapping piece progress hot wind is penetrated sizing, temperature It is 60 DEG C~200 DEG C；

And/or in described the step of second laminates progress hot wind is penetrated sizing, temperature is 60 DEG C~200 DEG C；

And/or according to mass percentage meter, first mixed material includes 50%~99% Time of Fluff Slurry and 1% ~50% meldable fibre mixing；

And/or according to mass percentage meter, second mixed material includes 50%~99% Time of Fluff Slurry and 1% ~50% meldable fibre mixing.

It is also wrapped after described the step of second laminates progress hot wind is penetrated sizing in one of the embodiments, Cooling step is included, the method for the cooling is cooling for exhausting.

It is also wrapped after described the step of second laminates progress hot wind is penetrated sizing in one of the embodiments, Cooling step is included, the relative humidity of second laminates after the step of the cooling is 3%RH~10%RH.

It further include that hot pressing is carried out to second laminates in one of the embodiments, after the step of the cooling, With the step of forming concaveconvex structure on second laminates.

In one of the embodiments, before described the step of second laminates progress hot wind is penetrated sizing, also Include the steps that being alternatively formed the water absorption layer and the third guide layer on second guide layer, wherein the third The material of guide layer includes Time of Fluff Slurry and meldable fibre.

The step of forming the third guide layer in one of the embodiments, includes: by the material of the third guide layer Then material molding carries out hot wind and penetrates sizing, forms the third guide layer；

Or, the step of forming the third guide layer includes: the material-paving by the third guide layer in the water suction On layer, the third guide layer is formed.

The chemical fibre includes polyester fiber, polypropylene fibre and polyethylene fibre in one of the embodiments, In the chemical fibre, the mass percentage of the polyester fiber is 1%~95%；

And/or the length of the fiber of the fluffy cotton layer is 38mm~64mm, the specification of the fluffy cotton layer be 1D~ 35D；

And/or the Time of Fluff Slurry is wood pulp or straw pulp；

And/or the meldable fibre includes polypropylene fibre and polyethylene fibre；

It and/or further include to described second after described the step of second laminates progress hot wind is penetrated sizing The step of laminates are cut, the method for the cutting are hot pressing cutting or ultrasonic cutting；

And/or it is described by the molding method of the first mixed material be air forming；

And/or it is described by the molding method of the second mixed material be air forming.

The Water-absorption core body that the preparation method of above-mentioned Water-absorption core body is prepared.

Above-mentioned Water-absorption core body is preparing the application in paper diaper or sanitary napkin.

Then the preparation method of above-mentioned Water-absorption core body is laid with fluffy by being initially formed the first guide layer on the first guide layer Cotton layer is laid with macromolecule on the fluffy cotton layer of first layer overlapping piece and inhales after obtained first layer overlapping piece progress hot wind penetrates sizing Water tree cosmetics is so that hydroscopic high-molecular resin powder is dispersed in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer altogether With forming water absorption layer, then the second guide layer and water suction layer stackup of sizing will be penetrated by hot wind, i.e. water entry leads in first Between fluid layer and the second guide layer, and forms the first mixed material of the first guide layer and form the second mixing of the second guide layer Material includes Time of Fluff Slurry and meldable fibre, when the second laminates hot wind penetrates sizing the first guide layer, in the second guide layer Meldable fibre melting and the first guide layer, water absorption layer and the second guide layer are tively firm linked together, height can be made Molecule water-absorbing resin powder is securely fixed in water absorption layer, after capable of being effectively prevented from hydroscopic high-molecular resin powder water swelling Caused lamination problem.It pulls loose and combs since the chemical fibre of fluffy cotton layer only have passed through, do not handled by glue spraying, Flexibility is more preferable, more fluffy, so that the expansion preferably for hydroscopic high-molecular resin powder provides space, ensure that macromolecule The expansion space of water-absorbing resin, so that the Water-absorption core body that the above method is prepared has preferable assimilation effect.

Simultaneously as hydroscopic high-molecular resin powder is to be laid on to penetrate the fluffy of the first layer overlapping piece after being formed by hot wind On cotton layer, hydroscopic high-molecular resin powder is dispersed in fluffy cotton layer, the second guide layer be after hot wind penetrates sizing again with suction Water layer is laminated to form the second laminates, and contains Time of Fluff Slurry in above-mentioned first guide layer and the second guide layer, so that obtained suction Water core has faster absorption speed, and after primary water suction, absorption speed is still very fast, has preferable soaking effect, and The problems such as surface after water suction is still more dry and comfortable, has preferable water lock effect, can be effectively prevented side leakage, back leak.

Detailed description of the invention

Fig. 1 is the flow chart of the preparation method of the Water-absorption core body of an embodiment.

Specific embodiment

To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating It is thorough comprehensive.

Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases Any and all combinations of the listed item of pass.

As shown in Figure 1, the preparation method of the Water-absorption core body of an embodiment, includes the following steps:

Step S110: the first mixed material is formed to form the first guide layer.

Specifically, the first guide layer is flake.Wherein, according to mass percent, the first mixed material includes 50%~ 99% Time of Fluff Slurry and 1%~50% meldable fibre mixing.

Wherein, Time of Fluff Slurry is straw pulp or wood pulp, preferably wood pulp.Since the fiber in straw pulp is shorter, diversion effect is poor, And for opposite straw pulp, the fiber in wood pulp is longer, has preferable diversion effect.

Wherein, meldable fibre includes polypropylene fibre and polyethylene fibre.Specifically, in meldable fibre, polypropylene is fine The mass ratio of dimension and polyethylene fibre is (2~5): (5~8).

Wherein, the length of meldable fibre is 3 millimeters~8 millimeters, and specification is 2D~3D.

It specifically, is air forming (namely by air flowing forming) by the molding method of the first mixed material.Specifically, Further include being crushed Time of Fluff Slurry before step S110, Time of Fluff Slurry and meldable fibre are then mixed to get the first mixed material Step.Further, after step Time of Fluff Slurry being crushed, before the step of Time of Fluff Slurry is mixed with meldable fibre, further include The step of broken Time of Fluff Slurry is crossed the mesh that diameter is 2.5 millimeters~8 millimeters, it is 2.5 millimeters~8 that Time of Fluff Slurry, which is crossed diameter, The mesh of millimeter can obtain no white point, white group, the uniform paper of paper.

Step S120: it is laid on the first guide layer to form fluffy cotton layer, obtains after chemical fibre is pulled loose and combed First layer overlapping piece.

I.e. chemical fibre is pulled loose and is laid immediately on the first guide layer after combing, therefore, the chemical fibre of fluffy cotton layer It only have passed through and pull loose and comb, and there is no being handled by glue spraying, so that fluffy cotton layer has preferable flexibility, more Add fluffy, so that the expansion preferably for hydroscopic high-molecular resin powder provides space, ensure that the swollen of hydroscopic high-molecular resin Swollen space.

Wherein, the length of the fiber of fluffy cotton layer is 38mm~64mm, and specification is 1.5D~35D (wherein, 1.5D~35D What is indicated is that the weight of 9000 meters of fibers is 1.5 grams~35 grams).

Wherein, chemical fibre includes polyester fiber, polypropylene fibre and polyethylene fibre；In chemical fibre, terylene is fine The mass percentage of dimension is 1%~99%.

Further, in chemical fibre, total mass percentage of polypropylene fibre and polyethylene fibre is 1%~ 99%.

Further, in chemical fibre, the mass ratio of polypropylene fibre and polyethylene fibre is (2~5): (5~8).

Step S130: first layer overlapping piece progress hot wind is penetrated into sizing, the first layer overlapping piece being formed.

Specifically, in the step of first layer overlapping piece progress hot wind being penetrated sizing, temperature is 60 DEG C~200 DEG C.

Step S140: being laid with hydroscopic high-molecular resin powder (i.e. SAP) on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

Since fluffy cotton layer is soft fluffy state, when being laid with hydroscopic high-molecular resin powder on fluffy cotton layer, macromolecule water uptake Resin-oatmeal can penetrate on fluffy cotton layer, so that water absorption layer be collectively formed with fluffy cotton layer, i.e. water absorption layer is to be dispersed with macromolecule The fluffy cotton layer of water-absorbing resin.

Wherein, the granularity of hydroscopic high-molecular resin is 50 μm~900 μm.Partial size is excessive or the too small Water-absorption core body of will affect The density of hydroscopic high-molecular resin in thickness and Water-absorption core body.

Step S150: the second mixed material is formed, and is then carried out hot wind and is penetrated sizing, to form the second guide layer.

Specifically, the second guide layer is flake.Wherein, according to mass percent, the second mixed material includes 50%~ 99% Time of Fluff Slurry and 1%~50% meldable fibre.Wherein, Time of Fluff Slurry is straw pulp or wood pulp, preferably wood pulp.Due to straw pulp In fiber it is shorter, diversion effect is poor, and for opposite straw pulp, and the fiber in wood pulp is longer, has preferable diversion effect. Meldable fibre includes polypropylene fibre and polyethylene fibre.Specifically, in meldable fibre, polypropylene fibre and polyethylene fibre Mass ratio be (2~5): (5~8).The length of meldable fibre is 3 millimeters~8 millimeters, and specification is 2D~3D.

Specifically, the preparation step of the second mixed material is identical as the preparation step of the first mixed material.Second mixture The content of Time of Fluff Slurry and meldable fibre in material can be identical in content as the first mixed material, can not also be identical.

Specifically, the second mixed material is formed, is then carried out in the step of hot wind penetrates sizing, hot wind penetrates sizing Temperature is 60 DEG C~200 DEG C.

It specifically, is air forming by the molding method of the second mixed material.

Step S160: the second guide layer is layered on water absorption layer, obtains the second laminates.

It further, further include on the second guide layer before the step of the second laminates progress hot wind being penetrated sizing The step of being alternatively formed multiple water absorption layers and multiple third guide layers.Wherein, the material of third guide layer includes Time of Fluff Slurry and heat Molten fiber.Wherein, according to mass percent meter, the material of third guide layer include: 50%~99% Time of Fluff Slurry and 1%~ 50% meldable fibre.Specifically, the Time of Fluff Slurry in the material of third guide layer and meldable fibre respectively with the first mixed material In Time of Fluff Slurry it is identical with meldable fibre, and the ratio of the Time of Fluff Slurry and meldable fibre in the material of third guide layer and first mixed The ratio for closing Time of Fluff Slurry and meldable fibre in material can be identical, can not also be identical.

The step of forming third guide layer in one of the embodiments, includes: to form the material of third guide layer, so Hot wind is carried out afterwards and penetrates sizing, forms third guide layer.Specifically, the preparation step of the material of third guide layer is mixed with first The preparation step of material is identical.The temperature that hot wind penetrates sizing is 60 DEG C~200 DEG C.

In another embodiment, the step of forming third guide layer includes: to inhale the material-paving of third guide layer On water layer, the third guide layer is formed.I.e. directly by the material-paving of third guide layer on water absorption layer, and before laying It is penetrated without hot wind.Specifically, the preparation step of the material of third guide layer is identical as the preparation step of the first mixed material.

Step S170: the second laminates progress hot wind is penetrated into sizing, obtains Water-absorption core body.

By the way that laminates progress hot wind is penetrated sizing so that the meldable fibre in guide layer melts, and by guide layer with Water absorption layer links together.

Specifically, in the step of the second laminates progress hot wind being penetrated sizing, temperature is 60 DEG C~200 DEG C.

Specifically, include the steps that cooling, cooling side after the step of the second laminates progress hot wind being penetrated sizing Method is cooling for exhausting, so that the second laminates after cooling and shaping are simultaneously, the humidity of the second laminates is adjusted.

Specifically, the relative humidity of the second laminates after cooling step is 3%RH~10%RH.

It specifically, further include that the second laminates are carried out after the step of the second laminates progress hot wind being penetrated sizing The step of cutting.Wherein, the step of cutting is after cooling step.The method of cutting process can cut to be commonly used in the art Cut processing method.Preferably, the method for cutting process is hot pressing cutting or ultrasonic cutting.It is cut using hot pressing cutting and ultrasonic wave The method cut can make the hot melt in the meldable fibre and the second guide layer in the first guide layer of cut place while cutting Fiber is fused, and further increases the connection between the first guide layer and the second guide layer, so that the first guide layer and second is led Fluid layer has preferable connectivity, while playing the role of edge sealing.It is highly preferred that the method for cutting process is hot pressing cutting, heat Crush-cutting is cut with faster cutting speed.

Specifically, the technological parameter of ultrasonic cutting are as follows: 80 ms/min~250 ms/min of cutting speed, ultrasonic frequency exists 20000 hertz or more.The cutting speed, which is equipped with the ultrasonic frequency, can guarantee the quality and preferable edge sealing effect of cutting.

Specifically, the technological parameter of hot pressing cutting are as follows: 1 m/min~350 ms/min of cutting speed.The cutting speed is equipped with this Ultrasonic frequency can guarantee the quality and preferable edge sealing effect of cutting.The temperature of hot pressing cutting is 80 DEG C~250 DEG C.

It further, further include that hot pressing is carried out to the second laminates, with the shape on the second laminates after cooling step The step of at concaveconvex structure.Wherein, hot pressing is carried out before the step of cutting to the second laminates.Specifically, the pressure of hot pressing 0.3MPa~10MPa, 80 DEG C~250 DEG C of hot pressing temperature.

Specifically, it according to mass percentage meter, (is formed fluffy in the chemical fibre that Water-absorption core body includes: 4%~10% The chemical fibre of loose cotton layer), 13%~30% villus paddle (total content of the Time of Fluff Slurry of all guide layers), 62%~70% Hydroscopic high-molecular resin powder (the hydroscopic high-molecular resin powder in all water absorption layers) and 2%~12% meldable fibre are (all to lead The total content of the meldable fibre of fluid layer) composition.

The preparation method of above-mentioned Water-absorption core body at least has the advantage that

(1) then the preparation method of above-mentioned Water-absorption core body is laid with by being initially formed the first guide layer on the first guide layer Fluffy cotton layer is laid with high score on the fluffy cotton layer of first layer overlapping piece after obtained first layer overlapping piece progress hot wind penetrates sizing Sub- water-absorbing resin powder is so that hydroscopic high-molecular resin powder is dispersed in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton Layer is collectively formed water absorption layer, then the second guide layer and water suction layer stackup that sizing will be penetrated by hot wind, i.e., water entry is in the Between one guide layer and the second guide layer, and form the second of the second guide layer of the first mixed material and formation of the first guide layer Mixed material includes Time of Fluff Slurry and meldable fibre, the first guide layer, the second water conservancy diversion when the second laminates hot wind penetrates sizing Meldable fibre in layer melts and the first guide layer, water absorption layer and the second guide layer tively firm links together, can It is securely fixed in hydroscopic high-molecular resin powder in water absorption layer, it is swollen that the water suction of hydroscopic high-molecular resin powder can be effectively prevented from Lamination problem caused by after swollen.It pulls loose and combs since the chemical fibre of fluffy cotton layer only have passed through, there is no pass through glue spraying Processing, flexibility is more preferable, more fluffy, so that the expansion preferably for hydroscopic high-molecular resin powder provides space, ensure that The expansion space of hydroscopic high-molecular resin, so that the Water-absorption core body that the above method is prepared has preferable assimilation effect.

The above-mentioned content of (2) first guide layers, the second guide layer and Time of Fluff Slurry and meldable fibre in third guide layer is matched Than that can make each guide layer that there is preferable diversion effect, and enable each layer of Water-absorption core body is more firm to be connected to Together, it ensure that the preferable connectivity of each layer of Water-absorption core body.

(3) it is cut by using the method for hot pressing cutting or ultrasonic cutting, not only realizes cutting, while can also So that the meldable fibre in the meldable fibre in the first guide layer of cut place and the second guide layer is fused, further increases Connection between one guide layer and the second guide layer, so that the first guide layer and the second guide layer have preferable connectivity, together When play the role of edge sealing.

It (4) and in the chemical fibre of the fluffy cotton layer of the formation of above-mentioned Water-absorption core body include polypropylene fibre and polyethylene fiber Dimension, enables the second laminates the first guide layer of water absorption layer and second guide layer during hot wind penetrates preferably to fuse Together, the connectivity of entire Water-absorption core body is further increased.

(5) by the way that the second laminates progress hot wind is being penetrated sizing, the step then cooled down and then progress cut place Hot pressing is carried out to the second laminates before the step of reason, so that the side of the second laminates forms concaveconvex structure, thus water-absorbing core Body has preferable diffusivity, increases water absorption area and reduce the contact area with skin, is inhaled with improving the diffusion of Water-absorption core body It receives, the problems such as so as to be more effectively prevented from side leakage, back leak.

The Water-absorption core body of one embodiment is prepared by the preparation method of above-mentioned Water-absorption core body.The suction of the Water-absorption core body Be not easy to be layered after water-resin expansion, soaking effect preferably and water lock effect is preferable.

Above-mentioned Water-absorption core body can be used for preparing paper diaper or sanitary napkin.For example, the chip of paper diaper or sanitary napkin uses, It since the Water-absorption core body has preferable assimilation effect, and is not easy to be layered after hydroscopic high-molecular resin expansion, water lock effect is dry and comfortable Property it is good so that using the Water-absorption core body as chip paper diaper or sanitary napkin have preferable assimilation effect, it is not easy to The problem of leading to side leakage, back leak.

The following are specific embodiment part, (following embodiment unless otherwise specified, does not then contain and removes inevitable impurity The component pointed out is not known in addition other.):

Embodiment 1

The preparation process of the Water-absorption core body of the present embodiment is as follows:

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 80%:20% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the first water conservancy diversion Layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and polyethylene fibre Mass percent be 4:6, the length of meldable fibre is 3 millimeters~8 millimeters, specification 3D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtains first layer overlapping piece, wherein and chemical fibre is the mixture of polyester fiber, polypropylene fibre and polyethylene fibre, and In chemical fibre, the mass percentage of polyester fiber is 50%, and the gross mass percentage of polypropylene fibre and polyethylene fibre contains Amount is 50%, and the mass ratio of polypropylene fibre and polyethylene fibre is 4:6, the length of the fiber of fluffy cotton layer be 60mm~ 64mm, specification 20D.

(3) first layer overlapping piece is subjected at 120 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 200 μm on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 80%:20% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 120 DEG C Lower progress hot wind penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 4:6, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 3D.

(6) the second guide layer is layered on water absorption layer, obtains the second laminates.

(7) by the second laminates, hot wind penetrates sizing in 130 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 8%RH of the second laminates, then in the condition that pressure is 0.5MPa, temperature is 140 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 180 ms/min, and temperature is 140 DEG C；According to quality percentage Content meter, entire Water-absorption core body is by 10% chemical fibre (forming the chemical fibre of the fluffy cotton of water absorption layer), 16% suede Hair paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 70% hydroscopic high-molecular resin powder and 4% heat Molten fiber (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Embodiment 2

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 2.5 millimeters, be 64.7% then according to mass percent: 35.3%, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, is obtained First guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and poly- The mass percent of vinyl fiber is 2:5, and the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtain first layer overlapping piece, wherein chemical fibre be polyester fiber, polypropylene fibre and polyethylene fibre, polyester fiber Mass percentage is 70%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 30%, polypropylene fibre and The mass ratio of polyethylene fibre is 2:5, and the length of the fiber of fluffy cotton layer is 38mm~40mm, specification 1.5D.

(3) first layer overlapping piece is subjected at 60 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 80 μm on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 2.5 millimeters, be 64.7% then according to mass percent: 35.3%, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then Hot wind is carried out at 60 DEG C and penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene The mass percent of fiber and polyethylene fibre, polypropylene fibre and polyethylene fibre is 2:5, and the length of meldable fibre is 3 millis Rice~8 millimeters, specification 2D.

(7) by the second laminates, hot wind penetrates sizing in 60 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 3%RH of the second laminates, then in the condition that pressure is 0.3MPa, temperature is 250 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 1 m/min, and temperature is 100 DEG C；Contain according to quality percentage Meter, entire Water-absorption core body is by 4% chemical fibre (forming the chemical fibre of the fluffy cotton of water absorption layer), 22% villus paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 62% hydroscopic high-molecular resin powder and 12% hot melt are fine Tie up (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Embodiment 3

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 8 millimeters, be 91.5% then according to mass percent: 8.5%, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the One guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and poly- second The mass percent of alkene fiber is 5:5, and the length of meldable fibre is 3 millimeters~8 millimeters, specification 3D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtain first layer overlapping piece, wherein chemical fibre be polyester fiber, polypropylene fibre and polyethylene fibre, polyester fiber Mass percentage is 1%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 99%, polypropylene fibre and poly- The mass ratio of vinyl fiber is 5:5, and the length of the fiber of fluffy cotton layer is 50mm~54mm, specification 35D.

(3) first layer overlapping piece is subjected at 130 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 300 μm on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 8 millimeters, be 99%:1%, suede then according to mass percent Hair slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 130 DEG C It carries out hot wind and penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and gathers The mass percent of vinyl fiber, polypropylene fibre and polyethylene fibre is 5:5, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 3D.

(7) by the second laminates, hot wind penetrates sizing in 150 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 8%RH of the second laminates, then under conditions of pressure is 1MPa, temperature is 80 DEG C, Hot pressing rolling with salient point is carried out hot pressing to the second laminates then to use to form concaveconvex structure on the second laminates The second laminates are cut in hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 350 ms/min, and temperature is 180 DEG C；According to quality percentage Content meter, entire Water-absorption core body is by 5% chemical fibre (forming the chemical fibre of the fluffy cotton of water absorption layer), 30% villus Paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 63% hydroscopic high-molecular resin powder and 2% hot melt Fiber (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Embodiment 4

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 4 millimeters, be 50%:50% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the first water conservancy diversion Layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and polyethylene fibre Mass percent be 2:8, the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtain first layer overlapping piece, wherein chemical fibre be polyester fiber, polypropylene fibre and polyethylene fibre, polyester fiber Mass percentage is 99%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 1%, polypropylene fibre and poly- The mass ratio of vinyl fiber is 2:8, and the length of the fiber of fluffy cotton layer is 60mm~64mm, specification 30D.

(3) first layer overlapping piece is subjected at 100 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 50 μm on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 4 millimeters, be 80%:20% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 150 DEG C Lower progress hot wind penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 2:8, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 2D.

(7) by the second laminates, hot wind penetrates sizing in 200 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 6%RH of the second laminates, then under conditions of pressure is 2MPa, temperature is 180 DEG C, Hot pressing rolling with salient point is carried out hot pressing to the second laminates then to use to form concaveconvex structure on the second laminates The second laminates are cut in hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 100 ms/min, and temperature is 80 DEG C；According to quality percentage Content meter, entire Water-absorption core body is by 10% chemical fibre (forming the chemical fibre of the fluffy cotton of water absorption layer), 13% suede Hair paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 70% hydroscopic high-molecular resin powder and 7% heat Molten fiber (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Embodiment 5

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 6 millimeters, be 99%:1%, suede then according to mass percent Hair slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the first water conservancy diversion Layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and polyethylene fibre Mass percent be 3:7, the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtain first layer overlapping piece, wherein chemical fibre be polyester fiber, polypropylene fibre and polyethylene fibre, polyester fiber Mass percentage is 30%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 70%, polypropylene fibre and The mass ratio of polyethylene fibre is 3:7, and the length of the fiber of fluffy cotton is 60mm~64mm, specification 30D.

(3) first layer overlapping piece is subjected at 180 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) 600 μm of granularity of hydroscopic high-molecular resin powder is laid on the fluffy cotton layer of the first layer overlapping piece of sizing, so that Hydroscopic high-molecular resin powder is dispersed in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 6 millimeters, be 61%:39% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 200 DEG C Lower progress hot wind penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 3:7, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 2D.

(7) by the second laminates, hot wind penetrates sizing in 160 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 9%RH of the second laminates, then in the condition that pressure is 10MPa, temperature is 200 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 200 ms/min, and temperature is 250 DEG C；According to quality percentage Content meter, entire Water-absorption core body is by 7% chemical fibre (forming the chemical fibre of the fluffy cotton of water absorption layer), 20% villus Paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 68% hydroscopic high-molecular resin powder and 5% hot melt Fiber (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Embodiment 6

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 70%:30% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the first water conservancy diversion Layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and polyethylene fibre Mass percent be 4:6, the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtain first layer overlapping piece, wherein chemical fibre be polyester fiber, polypropylene fibre and polyethylene fibre, polyester fiber Mass percentage is 60%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 40%, polypropylene fibre and The mass ratio of polyethylene fibre is 4:6, and the length of the fiber of fluffy cotton layer is 60mm~64mm, specification 30D.

(3) first layer overlapping piece is subjected at 200 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 900 μm on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer that water suction be collectively formed Layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 50%:50% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 180 DEG C Lower progress hot wind penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 4:6, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 2D.

(7) by the second laminates, hot wind penetrates sizing in 140 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 10%RH of the second laminates, then in the condition that pressure is 5MPa, temperature is 160 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 150 ms/min, and temperature is 200 DEG C；According to quality percentage Content meter, entire Water-absorption core body is by 8% chemical fibre (forming the chemical fibre of the fluffy cotton of water absorption layer), 15% villus Paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 67% hydroscopic high-molecular resin powder and 10% hot melt Fiber (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Embodiment 7

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton be laid on the first guide layer and is laid on the first guide layer to form first Fluffy cotton layer, obtains first layer overlapping piece, wherein chemical fibre is polyester fiber, polypropylene fibre and polyethylene fibre, and terylene is fine The mass percentage of dimension is 60%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 40%, and polypropylene is fine The mass ratio of peacekeeping polyethylene fibre is 4:6, and the length of the fiber of fluffy cotton layer is 60mm~64mm, specification 20D.

(4) hydroscopic high-molecular resin that granularity is 100 μm is laid on the first fluffy cotton layer of the first layer overlapping piece of sizing Powder so that hydroscopic high-molecular resin powder is dispersed in the first fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer altogether With first water absorption layer of formation.

(6) the second guide layer is layered on first water absorption layer.

(7) the second fluffy cotton is formed on the second guide layer using the identical method of the fluffy cotton layer of step (2) formation first Then layer is laid with the hydroscopic high-molecular resin powder that granularity is 300 μm on fluffy cotton layer, so that hydroscopic high-molecular resin powder disperses In the second fluffy cotton layer, and make hydroscopic high-molecular resin powder and the second fluffy cotton layer that second water absorption layer be collectively formed.

(8) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 80%:20% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains third mixed material.Third mixed material is subjected to air-pressure forming, then at 120 DEG C Lower progress hot wind penetrates sizing, to form third guide layer, wherein Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 4:6, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 3D.

(9) third guide layer is layered on second water absorption layer, obtains the second laminates.

(10) by the second laminates, hot wind penetrates sizing in 150 DEG C of hot tank, then to the second laminates after sizing into Row exhausting is cooling, and makes the relative humidity 8%RH of the second laminates, then in the condition that pressure is 1MPa, temperature is 80 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body；

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 300 ms/min, and temperature is 160 DEG C；According to quality percentage Content meter, entire Water-absorption core body by 8% chemical fibre (forming the chemical fibre in the fluffy cotton of two water absorption layers), 24% Villus paddle (the first guide layer, the second guide layer and third guide layer Time of Fluff Slurry total content), 62% macromolecule water uptake (the first guide layer, second are led for resin-oatmeal (total content of the hydroscopic high-molecular resin powder of two water absorption layers) and 6% meldable fibre The total content of the meldable fibre of fluid layer and third guide layer) composition.

Embodiment 8

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 2.5 millimeters, be 70% then according to mass percent: 30%, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the One guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and poly- second The mass percent of alkene fiber is 5:5, and the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton be laid on the first guide layer and is laid on the first guide layer to form first Fluffy cotton layer, obtains first layer overlapping piece, wherein chemical fibre is polyester fiber, polypropylene fibre and polyethylene fibre, and terylene is fine The mass percentage of dimension is 60%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 40%, and polypropylene is fine The mass ratio of peacekeeping polyethylene fibre is 5:5, and the length of the fiber of fluffy cotton layer is 38mm~64mm, specification 35D.

(3) first layer overlapping piece is subjected at 140 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) hydroscopic high-molecular resin that granularity is 500 μm is laid on the first fluffy cotton layer of the first layer overlapping piece of sizing Powder so that hydroscopic high-molecular resin powder is dispersed in the first fluffy cotton layer, and makes hydroscopic high-molecular resin powder and fluffy cotton layer altogether With first water absorption layer of formation.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 2.5 millimeters, be 70% then according to mass percent: 30%, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, is then existed Hot wind is carried out at 140 DEG C and penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is that polypropylene is fine The mass percent of peacekeeping polyethylene fibre, polypropylene fibre and polyethylene fibre is 5:5, and the length of meldable fibre is 3 millimeters ~8 millimeters, specification 2D.

(6) the second guide layer is layered on first water absorption layer.

(7) the second fluffy cotton is formed on the second guide layer using the identical method of the fluffy cotton layer of step (2) formation first Then layer is laid with the hydroscopic high-molecular resin powder that granularity is 500 μm on fluffy cotton layer, so that hydroscopic high-molecular resin powder disperses In the second fluffy cotton layer, and make hydroscopic high-molecular resin powder and the second fluffy cotton layer that second water absorption layer be collectively formed.

(8) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 2.5 millimeters, be 70% then according to mass percent: 30%, Time of Fluff Slurry is mixed with meldable fibre, obtains third mixed material.Third mixed material is subjected to air-pressure forming, is then existed Hot wind is carried out at 160 DEG C and penetrates sizing, to form third guide layer, wherein Time of Fluff Slurry is wood pulp；Meldable fibre is that polypropylene is fine The mass percent of peacekeeping polyethylene fibre, polypropylene fibre and polyethylene fibre is 5:5, and the length of meldable fibre is 3 millimeters ~8 millimeters, specification 2D.

(9) third guide layer is layered on second water absorption layer.

(10) step (7)~(9) are repeated, are inhaled with forming second third guide layer and third on second water absorption layer Water layer obtains the second laminates.

(11) by the second laminates, hot wind penetrates sizing in 100 DEG C of hot tank, then to the second laminates after sizing into Row exhausting is cooling, and makes the relative humidity 3%RH of the second laminates, then in the item that pressure is 10MPa, temperature is 250 DEG C Under part, the hot pressing rolling with salient point is subjected to hot pressing to the second laminates, to form concaveconvex structure on the second laminates, then The second laminates are cut using hot pressing cutting machine hot pressing, obtain Water-absorption core body；

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 180 ms/min, and temperature is 160 DEG C；According to quality percentage Content meter, entire Water-absorption core body by 10% chemical fibre (forming the chemical fibre in the fluffy cotton of three water absorption layers), 14% villus paddle (the first guide layer, the second guide layer and two third guide layers Time of Fluff Slurry total content), 70% height Molecule water-absorbing resin powder (total content of the hydroscopic high-molecular resin powder of three water absorption layers) and 6% meldable fibre (the first water conservancy diversion The total content of the meldable fibre of layer, the second guide layer and two third guide layers) composition.

Embodiment 9

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 8 millimeters, be 90%:10% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the first water conservancy diversion Layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and polyethylene fibre Mass percent be 3:7, the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(2) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton, fluffy cotton is laid on the first guide layer be laid on the first guide layer it is fluffy to be formed Cotton layer, obtain first layer overlapping piece, wherein chemical fibre be polyester fiber, polypropylene fibre and polyethylene fibre, polyester fiber Mass percentage is 60%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 40%, polypropylene fibre and The mass ratio of polyethylene fibre is 3:7, and the length of the fiber of fluffy cotton layer is 50mm~64mm, specification 1D.

(3) first layer overlapping piece is subjected at 80 DEG C hot wind and penetrates sizing, the first layer overlapping piece being formed.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 200 μm on the fluffy cotton layer of the first layer overlapping piece of sizing, with It is dispersed in hydroscopic high-molecular resin powder in fluffy cotton layer, and hydroscopic high-molecular resin powder and fluffy cotton layer is made to be collectively formed first A water absorption layer.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 8 millimeters, be 90%:10% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 120 DEG C Lower progress hot wind penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 3:7, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 3D.

(6) the second guide layer is layered on first water absorption layer.

(7) the second fluffy cotton layer is formed on the second guide layer using the identical method of fluffy cotton layer of step (2), then It is laid with the hydroscopic high-molecular resin powder that granularity is 300 μm on fluffy cotton layer, so that hydroscopic high-molecular resin powder is dispersed in second In fluffy cotton layer, and make hydroscopic high-molecular resin powder and the second fluffy cotton layer that second water absorption layer be collectively formed.

(8) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 80%:20% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains third mixed material.Third mixed material is laid on second water absorption layer, is formed Third guide layer obtains the second laminates, wherein Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and polyethylene fibre, The mass percent of polypropylene fibre and polyethylene fibre is 4:6, and the length of meldable fibre is 3 millimeters~8 millimeters, and specification is 3D。

(9) by the second laminates, hot wind penetrates sizing in 160 DEG C of hot tank, then carries out to the second laminates after sizing Exhausting is cooling, and makes the relative humidity 8%RH of the second laminates, then in the condition that pressure is 5MPa, temperature is 200 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 150 ms/min, and temperature is 120 DEG C；According to quality percentage Content meter, entire Water-absorption core body by 4% chemical fibre (forming the chemical fibre in the fluffy cotton of two water absorption layers), 26% villus paddle (the first guide layer, the second guide layer and third guide layer Time of Fluff Slurry total content), 66% macromolecule Water-absorbing resin powder (total content of the hydroscopic high-molecular resin powder of two water absorption layers) and 4% meldable fibre (the first guide layer, The total content of the meldable fibre of two guide layers and third guide layer) composition.

Embodiment 10

(1) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 8 millimeters, be 50%:50% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the first mixed material.First mixed material is subjected to air-pressure forming, obtains the first water conservancy diversion Layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre and polyethylene fibre Mass percent be 3:7, the length of meldable fibre is 3 millimeters~8 millimeters, specification 2D.

(5) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 8 millimeters, be 50%:50% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material.Second mixed material is subjected to air-pressure forming, then at 120 DEG C Lower progress hot wind penetrates sizing, to form the second guide layer.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 3:7, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 3D.

(6) the second guide layer is layered on first water absorption layer.

(8) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 92%:8%, suede then according to mass percent Hair slurry is mixed with meldable fibre, obtains third mixed material.Third mixed material is laid on second water absorption layer, forms the One third guide layer, wherein Time of Fluff Slurry is wood pulp；Meldable fibre is polypropylene fibre and polyethylene fibre, polypropylene fibre Mass percent with polyethylene fibre is 4:6, and the length of meldable fibre is 3 millimeters~8 millimeters, specification 3D.

(9) step (7) and (8) are repeated, with the formation third water absorption layer on first third guide layer and second the Three guide layers obtain the second laminates.

(10) by the second laminates, hot wind penetrates sizing in 100 DEG C of hot tank, then to the second laminates after sizing into Row exhausting is cooling, and makes the relative humidity 2%RH of the second laminates, then in the condition that pressure is 6MPa, temperature is 120 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates The second laminates are cut with hot pressing cutting machine hot pressing, obtain Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 100 ms/min, and temperature is 150 DEG C；According to quality percentage Content meter, entire Water-absorption core body by 8% chemical fibre (formed 3 water absorption layers fluffy cotton layer chemical fibre), 16% villus paddle (the first guide layer, the second guide layer and two third guide layers Time of Fluff Slurry total content), 67% height Molecule water-absorbing resin powder (total content of the hydroscopic high-molecular resin powder of three water absorption layers) and 9% meldable fibre (the first water conservancy diversion The total content of the meldable fibre of layer, the second guide layer and two third guide layers) composition.

Embodiment 11

The preparation process of the Water-absorption core body of the present embodiment is roughly the same with the preparation process of the Water-absorption core body of embodiment 1, area It is not, the second laminates are cut in the not instead of hot pressing of the use of (7) the step of the present embodiment, use ultrasonic wave cutting machine pair Second laminates carry out ultrasonic cutting.Wherein, the technological parameter of ultrasonic cutting are as follows: 160 ms/min of cutting speed, ultrasonic wave Frequency is 20000 hertz.

Embodiment 12

The preparation process of the Water-absorption core body of the present embodiment is roughly the same with the preparation process of the Water-absorption core body of embodiment 8, area It is not, the second laminates are cut in the not instead of hot pressing of the use of (11) the step of the present embodiment, use ultrasonic wave cutting machine Ultrasonic cutting is carried out to the second laminates.Wherein, the technological parameter of ultrasonic cutting are as follows: 250 ms/min of cutting speed, ultrasound Wave frequency rate is 25650 hertz.

Embodiment 13

The preparation process of the Water-absorption core body of the present embodiment is roughly the same with the preparation process of the Water-absorption core body of embodiment 1, area It is not, (7) directly carry out hot pressing cutting after exhausting is cooling the step of the present embodiment, therefore, the step of the present embodiment (7) Are as follows:

By the second laminates, hot wind penetrates sizing in 120 DEG C of hot tank, then takes out to the second laminates after sizing Air cooling, and make the relative humidity 3%RH of the second laminates, the second laminates then are cut using the hot pressing of hot pressing cutting machine, Obtain Water-absorption core body.

Embodiment 14

The preparation process of the Water-absorption core body of the present embodiment is roughly the same with the preparation process of the Water-absorption core body of embodiment 1, area It is not, all Time of Fluff Slurry used in the present embodiment are straw pulp.

Embodiment 15

The preparation process of the Water-absorption core body of the present embodiment is roughly the same with the preparation process of the Water-absorption core body of embodiment 1, area It is not, directlys adopt steel after the step of cutting method of the step (7) in the present embodiment is different, the present embodiment (7) hot pressing The step of knife cutting, i.e. the present embodiment (7) are as follows:

By the second laminates, hot wind penetrates sizing in 130 DEG C of hot tank, then takes out to the second laminates after sizing Air cooling, and make the relative humidity 8%RH of the second laminates, then in the condition that pressure is 0.5MPa, temperature is 140 DEG C Under, then the hot pressing rolling with salient point is carried out hot pressing to the second laminates to be made with forming concaveconvex structure on the second laminates It is cut with steel knife, obtains Water-absorption core body.

Comparative example 1

The preparation process of the Water-absorption core body of comparative example 1 is as follows:

Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters；According to mass percentage meter, using 22% villus Paddle and 78% hydroscopic high-molecular resin powder are mixed to form Water-absorption core body on toilet paper machine production line, wherein macromolecule water uptake The granularity of resin-oatmeal is 150 mesh, and Time of Fluff Slurry is wood pulp.

Comparative example 2

The preparation process of the Water-absorption core body of comparative example 2 is as follows:

It is intermediate successively to add hydroscopic high-molecular resin powder, fluffy cotton 6%, hot melt adhesive 2% using upper and lower 45g dust-free paper, then use Loft non-woven fabric width lives upper layer and lower layer dust-free paper, and fixed intermediate hydroscopic high-molecular resin powder obtains product after winding cutting, In, according to mass percent meter, Water-absorption core body includes dust-free paper 24%, hydroscopic high-molecular resin powder 68%, fluffy cotton 6% and heat Melten gel 2%；Hot melt adhesive is EVA resin.

Comparative example 3

The preparation process of the Water-absorption core body of comparative example 3 is as follows:

(1) chemical fibre is vibrated in bale opener, and wind is sent in opener and is pulled loose, the chemical fibre after pulling loose It is fed into extreme trace hopper and is stored by wind, then be fed into automatic hopper and quantified through wind, subsequently enter carding machine In combed, form fluffy cotton layer, wherein chemical fibre is polyester fiber, polypropylene fibre and polyethylene fibre, and terylene is fine The mass percentage of dimension is 50%, and the gross mass percentage composition of polypropylene fibre and polyethylene fibre is 50%, and polypropylene is fine The mass ratio of peacekeeping polyethylene fibre is 4:6, and the length of the fiber of fluffy cotton layer is 60mm~64mm, specification 20D.

(2) Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, be 80%:20% then according to mass percent, Time of Fluff Slurry is mixed with meldable fibre, obtains mixed material.Wherein, Time of Fluff Slurry is wood pulp；Meldable fibre be polypropylene fibre and The mass percent of polyethylene fibre, polypropylene fibre and polyethylene fibre is 4:6, and the length of meldable fibre is 3 millimeters~8 millis Rice, specification 3D.

(3) mixed material being laid on fluffy cotton layer in step (2), forms the first guide layer.

(4) it is laid with the hydroscopic high-molecular resin powder that granularity is 150 mesh on the first guide layer, obtains water absorption layer.

(5) mixed material being laid on water absorption layer in step (2), obtains the second guide layer, obtains laminates.

(6) laminates are subjected in 130 DEG C of hot tank hot wind and penetrate setting treatment, then have surplus heat to the band after sizing Laminates are rolled, and it is cooling to carry out exhausting simultaneously, and makes the relative humidity 8%RH of laminates, with a thickness of 2.5 millimeters, And laminates after cooling are crimped, wherein pressure 0.5MPa when rolling.

(7) under conditions of pressure is 0.5MPa, temperature is 140 DEG C, the hot pressing rolling with salient point carries out laminates Hot pressing, so that laminates form bump far from the side of the first guide layer, then using hot pressing cutting machine hot pressing cutting stacking Part obtains Water-absorption core body.

Wherein, the technological parameter of hot pressing cutting are as follows: cutting speed is 180 ms/min, and temperature is 140 DEG C；According to quality percentage Content meter, in entire Water-absorption core body by 10% chemical fibre (forming the chemical fibre of fluffy cotton layer), 16% villus paddle (total content of the Time of Fluff Slurry of the first guide layer and the second guide layer), 70% hydroscopic high-molecular resin powder and 4% hot melt are fine Tie up (total content of the meldable fibre of the first guide layer and the second guide layer) composition.

Comparative example 4

The preparation process of the Water-absorption core body of comparative example 4 is roughly the same with the preparation process of the Water-absorption core body of embodiment 1, difference It is, comparative example 4 penetrates sizing without passing through hot wind before step (4), that is, comparative example 4 does not have step (3), macromolecule Water-absorbing resin powder is directly dispersing in the fluffy cotton layer of the first layer overlapping piece of step (2).

Comparative example 5

The preparation process of the Water-absorption core body of comparative example 5 is roughly the same with the preparation process of the Water-absorption core body of embodiment 1, difference Be, the second guide layer of comparative example 5 before being formed on water absorption layer without penetrating sizing by hot wind, i.e. comparative example 5 The preparation process of Water-absorption core body is as follows:

Step (1)~(4): identical as (1) the step of embodiment 1~(4).

Step (5): Time of Fluff Slurry is crushed, and crosses the mesh that diameter is 5 millimeters, is 80% then according to mass percent: 20%, Time of Fluff Slurry is mixed with meldable fibre, obtains the second mixed material, and the second mixed material is laid on water absorption layer, is obtained Second laminates.

Step (6): identical as (7) the step of embodiment 1.

Test:

One, connectivity is tested: since the Water-absorption core body of comparative example 1 is one layer of structure, lamination is not present, without carrying out Connectivity test, therefore, carries out absorption water process for the Water-absorption core body of embodiment 1~15 and comparative example 2~5 respectively, until inhaling Water core sufficiently absorbs water and (reaches saturation), and whether observation Water-absorption core body is layered.The Water-absorption core body of embodiment 1~14 and comparative example Layering the results are shown in Table 1.

Two, infiltration rate is tested: weighing the suction of 36 centimetres of embodiment 1~14 and comparative example 1~5 respectively with electronic balance Water core, accuracy are 1 millimeter, are subsequently placed in the middle for laying flat and 30CM pipe being vertically disposed on platform Water-absorption core body.With The 80ml standard that graduated cylinder measures 23 DEG C synthesizes test solution, pours into the pipe of 30CM bore, starts simultaneously at timing, the test solution to 30CM pipe It disappears, record absorbs the time used.Soak time is expressed in seconds, and each Water-absorption core body is measured twice, twice measuring interval It 10 minutes, respectively obtains the time for absorbing test for the first time and absorbs the time of test for second.

Wherein, standard synthesis test solution be according to human urine Main physical performance prepare, have it is similar with its flowing and Absorption characteristic, can fine simulation human urine performance.Standard synthesis test solution concrete composition are as follows: water (distilled water or go from Sub- water) 991ml, sodium chloride 9.00g.

Three, it the measurement of the reverse osmosis performance (water lock performance) of the Water-absorption core body of embodiment 1~15 and comparative example 1~5: first tests The weight T1 of 10CM diameter filter paper, then the test of above-mentioned infiltration rate pour into for the second time standard synthesis 5 minutes of test solution it Afterwards, above-mentioned filter paper is placed on absorptive core, then hurts 2KG weight block in filter paper side pressure, briquetting is taken away after 1 minute, and remove Filter paper weighs filter weight T2, reverse osmosis amount T=T2-T1.

Four, the measurement of the water absorption of the Water-absorption core body of embodiment 1~15 and comparative example 1~5:

(1) instrument and reagent

A, electronic balance, sensibility reciprocal 0.001g.

B, papery tea bag, having a size of 60mm*85mm, gas permeability (230 ± 50) L/ (min100cm²) (pressure difference 124pa)

C, clip, fixed tea bag are used.

D, standard synthesizes test solution

(2) determination step:

A, 14g sample is weighed, accurately to 0.001g, and the quality is denoted as m=0.202g.Sample is all poured into tea bag Bottom, being attached to the sample on the inside of tea bag also should all pour into tea bag bottom.

B, tea bag is sealed, is dipped in the standard synthesis test solution beaker for the amount of being sufficiently loaded with, soaking time 30min.

C, lightly the tea bag equipped with sample is brought out, is hung up with clip, dropping liquid 10min under stationary state.It is multiple When tea bag is hung simultaneously, pay attention to not contacting with each other between tea bag.

D, after 10min, the quality m that sample tea bag is housed is weighed₁=422g.

E, blank value measurement is carried out simultaneously using the tea bag of not sample, weighs the quality of blank test tea bag, and should Quality is denoted as m₂=2g.

(3) expression of measurement result

The uptake of sample can be calculated by formula (F.1):

W-sample uptake in formula, unit are gram every gram (g/g)；

m₁- the quality equipped with sample tea bag, unit are gram (g)；

m₂The quality of-blank test tea bag, unit are gram (g)；

M-weighs the quality of sample, and unit is gram (g).

Each sample is measured twice, and takes its arithmetic mean of instantaneous value as measurement result, as a result after the revision of the convention to decimal point One.Wherein, the uptake of the Water-absorption core body of embodiment 1~15 and comparative example 1~5, as shown in table 1.

Table 1 is connectivity, water absorption, the soak time reverse osmosis amount of the Water-absorption core body of embodiment 1~15 and comparative example 1~5.

Table 1

From table 1 it follows that the Water-absorption core body of embodiment 1~15 after abundant water suction without lamination, and by It is one layer of structure in the Water-absorption core body of comparative example 1, lamination is not present, is i.e. the Water-absorption core body of embodiment 1~15 has preferable Connectivity, and there is lamination after sufficiently absorbing water in the Water-absorption core body of comparative example 2.

And the Water-absorption core body of embodiment 1~15 is up to 7 seconds in the soak time for pouring into standard synthesis test solution for the second time, Far superior to comparative example 1~5.The reverse osmosis amount of the Water-absorption core body of embodiment 1~15 is up to 0.9g, well below comparative example 1~ 5, it is clear that the Water-absorption core body of embodiment 1~15 has better absorbent properties and water lock performance.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims

1. a kind of preparation method of Water-absorption core body, which comprises the steps of:

First mixed material is formed to form the first guide layer, first mixed material includes Time of Fluff Slurry and meldable fibre；

It is laid on after chemical fibre is pulled loose and combed on first guide layer to form fluffy cotton layer, obtains first cascade Part；

It is laid with hydroscopic high-molecular resin powder on the fluffy cotton layer of the first layer overlapping piece of sizing, so that the macromolecule Water-absorbing resin powder is dispersed in the fluffy cotton layer, and the hydroscopic high-molecular resin powder is collectively formed with the fluffy cotton layer Water absorption layer；

Second mixed material is formed, hot wind is then carried out and penetrates sizing, to form the second guide layer, second mixed material Including Time of Fluff Slurry and meldable fibre；

2. the preparation method of Water-absorption core body according to claim 1, which is characterized in that it is described by the first layer overlapping piece into In the step of row hot wind penetrates sizing, temperature is 60 DEG C~200 DEG C；

And/or according to mass percentage meter, first mixed material include 50%~99% Time of Fluff Slurry and 1%~ 50% meldable fibre mixing；

And/or according to mass percentage meter, second mixed material include 50%~99% Time of Fluff Slurry and 1%~ 50% meldable fibre mixing.

3. the preparation method of Water-absorption core body according to claim 1, which is characterized in that it is described by second laminates into Include the steps that after the step of row hot wind penetrates sizing cooling, the method for the cooling is that exhausting cools down.

4. the preparation method of Water-absorption core body according to claim 1, which is characterized in that it is described by second laminates into Include the steps that cooling second laminates after the step of the cooling after the step of row hot wind penetrates sizing Relative humidity is 3%RH~10%RH.

5. the preparation method of Water-absorption core body according to claim 3 or 4, which is characterized in that after the step of the cooling, Further include to second laminates carry out hot pressing, on second laminates formed concaveconvex structure the step of.

6. the preparation method of Water-absorption core body according to claim 1, which is characterized in that it is described by second laminates into It further include being alternatively formed the water absorption layer and the third on second guide layer before the step of row hot wind penetrates sizing The material of the step of guide layer, the third guide layer include Time of Fluff Slurry and meldable fibre.

7. the preparation method of Water-absorption core body according to claim 6, which is characterized in that form the step of the third guide layer Suddenly include: to form the material of the third guide layer, then carry out hot wind and penetrate sizing, form the third guide layer；

Or, the step of forming the third guide layer includes: the material-paving by the third guide layer on the water absorption layer, Form the third guide layer.

8. the preparation method of described in any item Water-absorption core bodies according to claim 1~7, which is characterized in that the chemical fibre Including polyester fiber, polypropylene fibre and polyethylene fibre, in the chemical fibre, the quality percentage of the polyester fiber contains Amount is 1%~95%；

And/or the length of the fiber of the fluffy cotton layer is 38mm~64mm, the specification of the fluffy cotton layer is 1D~35D；

And/or the Time of Fluff Slurry is wood pulp or straw pulp；

It further include to second stacking and/or after described the step of second laminates progress hot wind is penetrated sizing The step of part is cut, the method for the cutting are hot pressing cutting or ultrasonic cutting；

9. the Water-absorption core body that the preparation method of Water-absorption core body described in claim 1~8 any one is prepared.

10. Water-absorption core body as claimed in claim 9 is preparing the application in paper diaper or sanitary napkin.