CN108159478A - A kind of absorbing material and preparation method thereof - Google Patents
A kind of absorbing material and preparation method thereof Download PDFInfo
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- CN108159478A CN108159478A CN201711471261.1A CN201711471261A CN108159478A CN 108159478 A CN108159478 A CN 108159478A CN 201711471261 A CN201711471261 A CN 201711471261A CN 108159478 A CN108159478 A CN 108159478A
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- sms
- molecular resin
- woven fabrics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
Abstract
The invention discloses a kind of absorbing materials and preparation method thereof,Including SMS spunbond melt spraying non-woven fabrics,The SMS spunbonds melt spraying non-woven fabrics include the first SMS spunbond melt spraying non-woven fabrics being mutually permanently connected,2nd SMS spunbond melt spraying non-woven fabrics,Hydroscopic high-molecular resin SAP is fixed in the first SMS spunbonds melt spraying non-woven fabrics and the 2nd SMS spunbond melt spraying non-woven fabrics,The hot melt adhesive that hydroscopic high-molecular resin SAP or SMS spunbond melt spraying non-woven fabrics are fixed,The hydroscopic high-molecular resin SAP is that the hydroscopic high-molecular resin of shell that the curing of water penetration polyaminoester emulsion forms is wrapped up on surface layer,It is solved at all using this industry problems so that macromolecule cannot be in direct contact with hot melt adhesive,The absorption efficiency of the absorbing material effectively improves resource utilization height simultaneously,It is more environmentally friendly,The absorbing material preparation method is continuously controllable simultaneously.The present invention is widely used in the products such as medical operation mattress, adult diaper, baby paper diaper, sanltary towel.
Description
Technical field
The present invention relates to medical and women and infant article absorbing materials, and in particular to a kind of absorbing material and preparation method thereof.
Background technology
There are addition Time of Fluff Slurry, cellulose fibre etc. in absorbing material in the prior art, cause absorbing material integrally heavier, it is high
Molecule water-absorbing resin does not carry out positioning distribution, easily shifts, and to reach corresponding assimilation effect, required addition macromolecule is inhaled
Water-resin is more, and absorption efficiency is not high.Hydroscopic high-molecular resin close-packed arrays in the product in absorbing material in the prior art are high
Surface layer macromolecule can extend and into hydrated gel shape after first water suction when molecule water absorbing resin particle is densely arranged, so as to close
Hydrone is to the path of granulation mass diffusion inside.This effect has seriously affected the high molecular first rate of water absorption of dense arrangement
With total multiplying power that absorbs water.If it be fixed using hot melt adhesive, hydroscopic high-molecular resin is in osmosis ShiShimonoseki of hot melt adhesive
Key functional group, which can fail, causes water absorbing properties drastically to decline, and product will be unable to reach strong water sorption, data be caused to waste, not ring
It protects.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of absorbing material and preparation method thereof.
The technical solution adopted by the present invention to solve the technical problems is：A kind of absorbing material is meltblown nothing including SMS spunbonds
Woven fabric, wherein：The SMS spunbonds melt spraying non-woven fabrics include the first SMS spunbonds melt spraying non-woven fabrics being mutually permanently connected, second
It is fixed in SMS spunbond melt spraying non-woven fabrics, the first SMS spunbonds melt spraying non-woven fabrics and the 2nd SMS spunbond melt spraying non-woven fabrics
Hydroscopic high-molecular resin SAP, the hot melt adhesive that hydroscopic high-molecular resin SAP or SMS spunbond melt spraying non-woven fabrics are fixed, it is described
Hydroscopic high-molecular resin SAP is that the hydroscopic high-molecular resin of shell that the curing of water penetration polyaminoester emulsion forms is wrapped up on surface layer.
Wherein：The hydroscopic high-molecular resin SAP include be set to different levels the first hydroscopic high-molecular resin SAP,
Second hydroscopic high-molecular resin SAP, the hot melt adhesive includes the first SMS spunbonds melt spraying non-woven fabrics are fixed and the 2nd SMS is spun
First hot melt adhesive of viscous melt spraying non-woven fabrics, for fixing the first hydroscopic high-molecular resin SAP in the first SMS spunbond melt spraying non-woven fabrics
On the second hot melt adhesive, for separating and be fixed on third hot melt adhesive on the first hydroscopic high-molecular resin SAP, second high score
Sub- water-absorbing resin SAP is bonded with the 2nd SMS spunbond melt spraying non-woven fabrics, the first hydroscopic high-molecular resin SAP, the second macromolecule
The surface layer of water-absorbing resin SAP is enclosed with the shell that the curing of water penetration polyurethane elastic emulsion forms.
Wherein：The 2nd SMS spunbond melt spraying non-woven fabrics both sides are arc, and the 2nd SMS spunbonds melt spraying non-woven fabrics are first
Tail both ends are fixed with the first SMS spunbond melt spraying non-woven fabrics.
Wherein：Second hot melt adhesive mutually bonds the first macromolecule to be formed and will position distribution with third hot melt adhesive part
Water-absorbing resin SAP, the second hydroscopic high-molecular resin SAP are separated into the continuous closed area in multiple sections.
Wherein：The SMS spunbonds melt spraying non-woven fabrics can be replaced dust-free paper.
A kind of preparation method of absorbing material, wherein：It is made of following preparation process,
S1, hot melt adhesive are melted by hot melt adhesive machine；
S2, by the first SMS spunbond melt spraying non-woven fabrics unreeled and tension force, material correction, S1 melting hot melt adhesive
It is coated, forms the second hot melt adhesive；
Hydroscopic high-molecular resin is carried out jetting stream vacuum transfer, and carry out jet stream with water penetration polyurethane elastic emulsion by S3
Stirring；
S4, the product after the jet mixing of S3 is carried out hot setting makes hydroscopic high-molecular resin outer wrapping last layer permeable
Property polyurethane elastic emulsion and cure shelling, the hydroscopic high-molecular resin SAP obtained after curing continuously transmits a macromolecule high position
In buffer tank；
S5, the hydroscopic high-molecular resin SAP in macromolecule high position buffer tank, which pass through dynamic and compensate continuous metering device, to be controlled
It is delivered continuously to macromolecule low level buffer tank；
S6 continuously transmits the hydroscopic high-molecular resin SAP of macromolecule low level buffer tank in S5 continuous to the first macromolecule
Printing equipment, the continuous printing equipment of the first macromolecule by hydroscopic high-molecular resin SAP positioning be transferred to S2 through the second hot melt adhesive into
On first SMS spunbond melt spraying non-woven fabrics of row coating；
The melting hot melt adhesive of S1 is sprayed on the hydroscopic high-molecular resin SAP of S6 and forms third hot melt adhesive and fixation by S7
Hydroscopic high-molecular resin SAP；
S8 continuously transmits the hydroscopic high-molecular resin SAP of macromolecule low level buffer tank in S5 continuous to the second macromolecule
Hydroscopic high-molecular resin SAP positioning is transferred to the third hot melt adhesive in S7 by printing equipment, the continuous printing equipment of the second macromolecule
On be fixed；
2nd SMS spunbond melt spraying non-woven fabrics are unreeled and tension force, material correction, are heated with the melting of S1 by S9
Glue is coated while being fixed and formed the first hot melt adhesive with the first SMS spunbond melt spraying non-woven fabrics afterwards and wraps up S8's
Entire article, winding, packaging.
Wherein：It is calculated with mass percent, SMS spunbond melt spraying non-woven fabrics mass percent 10%-17%, macromolecule water uptake tree
Fat mass percent 82%-90%, water penetration polyurethane elastic emulsion mass percent 1%-5%, hot melt adhesive mass percent
5%-10%.
Wherein：The SMS spunbonds melt spraying non-woven fabrics thickness range is 8-14 grams every square metre.
Wherein：The SMS spunbonds melt spraying non-woven fabrics can be replaced dust-free paper.
The beneficial effects of the invention are as follows：One layer of water penetration polyaminoester emulsion, which is coated with, in hydroscopic high-molecular resin forms permeable shell
Later, enough moisture subchannels will be reserved between polymeric particles.Even if polymeric particles are by hot melt adhesive partial penetration, permeable
Property polyaminoester emulsion elastic container protection under, with hydrone effect functional group and channel still retain.So that macromolecule can not
It is solved at all using this industry problems with being in direct contact with hot melt adhesive, while the absorbing material does not add any Time of Fluff Slurry
Or cellulose fibre so that product is integrally frivolous.Hydroscopic high-molecular resin SAP is held in position distribution in the product, will not occur
Displacement.So that the absorption efficiency of hydroscopic high-molecular resin SAP effectively improves, 500ml is enabled to using this absorbing material
Saline fluid absorbs required macromolecule quantity and averagely reduces 55%, absorbs layer weight and reduces 64%, resource utilization
Height, it is more environmentally friendly.Absorbing material production is continuous controllable.The present invention is widely used in medical operation mattress, adult diaper, baby
The products such as paper diaper, sanltary towel.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the product manufacturing process schematic diagram of the present invention；
Fig. 2 is the product structure schematic diagram of the present invention；
Fig. 3 is the hydroscopic high-molecular resin structure schematic diagram of the present invention；
Fig. 4 is the pre-processing device schematic diagram of S3, S4 in preparation method of the invention；
Fig. 5 is the continuous conveying of the present invention and dynamic metering device schematic diagram；
Fig. 6 is the continuous printing equipment schematic diagram of macromolecule of the present invention；
Fig. 7 is the transfer roll structure diagram of the present invention；
Fig. 8 is the transfer roll outer layer sleeve structure diagram of the present invention；
Fig. 9 is the transfer roll fixed axle structure schematic diagram of the present invention；
Figure 10 is the continuous conveying of the present invention and the supply curve figure of dynamic metering device；
Figure 11 is the flow diagram of the hydroscopic high-molecular resin package water penetration polyurethane of the present invention；
Figure 12 is without package water-absorbing resin water suction state diagram；
Figure 13 is hydroscopic high-molecular resin SAP use principle figures.
Specific embodiment
Referring to figs. 1 to Figure 13, a kind of absorbing material, including SMS spunbonds melt spraying non-woven fabrics 38, the SMS spunbonds are meltblown nothing
Woven fabric 38 includes the first SMS spunbonds melt spraying non-woven fabrics 15, the 2nd SMS spunbonds melt spraying non-woven fabrics 16 that are mutually permanently connected, described
2nd SMS spunbonds melt spraying non-woven fabrics, 16 both sides are arc, and the 16 head and the tail both ends of the 2nd SMS spunbonds melt spraying non-woven fabrics are with first
SMS spunbonds melt spraying non-woven fabrics 15 are fixed, the first SMS spunbonds melt spraying non-woven fabrics 15 and the 2nd SMS spunbonds melt spraying non-woven fabrics 16
It is inside fixed with hydroscopic high-molecular resin SAP 1, hydroscopic high-molecular resin SAP 1 or SMS spunbonds melt spraying non-woven fabrics 38 is carried out
Fixed hot melt adhesive 39, the hydroscopic high-molecular resin SAP 1 include the first hydroscopic high-molecular resin for being set to different levels
SAP 10, the second hydroscopic high-molecular resin SAP 11, the hot melt adhesive 39 include the first SMS spunbond melt spraying non-woven fabrics are fixed
15 and the 2nd SMS spunbonds melt spraying non-woven fabrics 16 the first hot melt adhesive 12, for fix the first hydroscopic high-molecular resin SAP 10 in
The second hot melt adhesive 13 on first SMS spunbonds melt spraying non-woven fabrics 15, for separating and be fixed on the first hydroscopic high-molecular resin SAP
Third hot melt adhesive 14 on 10, the second hydroscopic high-molecular resin SAP 11 are bonded with the 2nd SMS spunbonds melt spraying non-woven fabrics 16, institute
It states the second hot melt adhesive 13 and the first hydroscopic high-molecular resin SAP to be formed and will position distribution is mutually bonded with 14 part of third hot melt adhesive
10th, the second hydroscopic high-molecular resin SAP 11 is separated into the continuous closed area in multiple sections, first macromolecule water uptake
Resin SAP 10, the second hydroscopic high-molecular resin SAP11 surface layer be enclosed with water penetration polyurethane elastic emulsion and cure
Shell 2.
SMS spunbonds melt spraying non-woven fabrics 38 in the absorbing material can be substituted for each other with dust-free paper, be melted including the first SMS spunbonds
The available dust-free paper of blown non-woven fabric 15, the second spunbond melt spraying non-woven fabrics 16 is substituted for each other.
The absorbing material does not add any Time of Fluff Slurry or cellulose fibre so that product is integrally frivolous.Macromolecule water uptake tree
Fat SAP 1 is held in position distribution in the product, will not be subjected to displacement.So that the absorption efficiency of hydroscopic high-molecular resin SAP 1 obtains
To effectively improving, the effective water absorbent rate of product is 80-120 times.In downstream product absorbent article product design, use
This absorbing material enables to 500ml saline fluids to absorb required macromolecule quantity and averagely reduces 55%, absorbed layer
Weight reduces 64%, and resource utilization is high, more environmentally friendly.
Product is designed using packaging type, and hydroscopic high-molecular resin SAP 1 will not be leaked in use.
The preparation method of wherein absorbing material is as follows：
S1, hot melt adhesive are melted by hot melt adhesive machine；
First SMS spunbonds melt spraying non-woven fabrics 15 are unreeled and tension force, material are rectified a deviation, the melting of S1 heats by S2
Glue 39 is coated, and forms the second hot melt adhesive 13；
Hydroscopic high-molecular resin is carried out jetting stream vacuum transfer, and carry out jet stream with water penetration polyurethane elastic emulsion by S3
Stirring；
S4, the product after the jet mixing of S3 is carried out hot setting makes hydroscopic high-molecular resin outer wrapping last layer permeable
Property polyurethane elastic emulsion simultaneously cures shelling 2, and the hydroscopic high-molecular resin SAP 1 obtained after curing continuously transmits macromolecule height
In the buffer tank 18 of position；
S5, the hydroscopic high-molecular resin SAP in macromolecule high position buffer tank 18 pass through dynamic and compensate continuous metering device control
System is delivered continuously to macromolecule low level buffer tank 24；
S6 continuously transmits the hydroscopic high-molecular resin SAP 1 of macromolecule low level buffer tank 24 in S5 to the first macromolecule
The positioning of hydroscopic high-molecular resin SAP 1 is transferred to S2 through the second heat by continuous printing equipment, the continuous printing equipment of the first macromolecule
On the first SMS spunbonds melt spraying non-woven fabrics 15 that melten gel 13 is coated；
The melting hot melt adhesive of S1 is sprayed on the hydroscopic high-molecular resin SAP 1 of S6 and forms third hot melt adhesive 14 simultaneously by S7
Fixed hydroscopic high-molecular resin SAP 1；
S8 continuously transmits the hydroscopic high-molecular resin SAP 1 of macromolecule low level buffer tank 24 in S5 to the second macromolecule
Hydroscopic high-molecular resin SAP 1 is positioned the third being transferred in S7 by continuous printing equipment, the continuous printing equipment of the second macromolecule
It is fixed in hot melt adhesive 14；
S9, by the 2nd SMS spunbonds melt spraying non-woven fabrics 16 unreeled and tension force, material correction, with the melting heat of S1
Melten gel 39 is coated while being fixed and formed afterwards the first hot melt adhesive 12 with the first SMS spunbonds melt spraying non-woven fabrics 15 simultaneously
The entire article of package S8, winding, packaging；
Wherein 38 mass percent 10%-17% of SMS spunbonds melt spraying non-woven fabrics, wherein SMS spunbonds melt spraying non-woven fabrics thickness
Ranging from 8-14 grams every square metre, SMS spunbonds melt spraying non-woven fabrics 38 include the first SMS spunbonds melt spraying non-woven fabrics 15, the second spunbond
Melt spraying non-woven fabrics 16, hydroscopic high-molecular resin mass percent 82%-90%, it is high that hydroscopic high-molecular resin SAP 1 includes first
Molecule water-absorbing resin SAP 10, the second hydroscopic high-molecular resin SAP 11, water penetration polyurethane elastic emulsion mass percent
1%-5%, hot melt adhesive mass percent 5%-10%, hot melt adhesive 39 include the first hot melt adhesive 12, the second hot melt adhesive 13, third heat
Melten gel 14.
Wherein manufacturing process SMS spunbonds melt spraying non-woven fabrics 38 can be substituted for each other with dust-free paper, be melted including the first SMS spunbonds
The available dust-free paper of blown non-woven fabric 15, the second spunbond melt spraying non-woven fabrics 16 is substituted for each other.
Product before SMS spunbonds melt spraying non-woven fabrics 38 or dust-free paper is fixed on, is needed using hydroscopic high-molecular resin SAP 1
The pretreating process of S3, S4 are carried out, i.e., circulating jet stirring technique is used outside macromolecule commercial pellet by special device
Cladding last layer water penetration polyurethane elastic emulsion simultaneously cures shelling 2.The purpose of this technique is：In general, high score
Sub- particle close-packed arrays in the product, if it be fixed using hot melt adhesive, hydroscopic high-molecular resin SAP 1 is in hot melt adhesive
Osmosis under key functional groups can fail water absorbing properties is caused drastically to decline, product will be unable to reach strong water sorption.When
Hydroscopic high-molecular resin SAP, will shape outside hydroscopic high-molecular resin SAP 1 after the cladding pretreatment of water penetration polyurethane
Into one layer of permeable shell, the key functional groups that hydroscopic high-molecular resin SAP 1 plays water suction guiding function will not directly expose and hot melt
It is glued and touches, and the effect of not blocked on water of this layer of shell 2 will not influence the strands of hydroscopic high-molecular resin SAP 1 after absorption
Unfold and expand.Meanwhile these water penetration polyurethane can also provide additional permeable gap and channel, improve macromolecule water uptake tree
The first absorption rate of fat.
Wherein the preprocess method of S3, S4 and equipment component are specific as follows, including interconnected jet stream compression system,
Jet mixing device, the compression system include hydroscopic high-molecular resin being delivered continuously to penetrating in jet mixing system
Flow vacuum shifting pump, the jet mixing device includes being interconnected and be sufficiently mixed the agitating device of raw material, cycle fills
Put, the agitating device include cavity 9, the first feed pipe 3 with being communicated inside cavity 9, the second feed pipe 4 of through cavities,
The diffusing opening 5 of mixing 4 content material of the first feed pipe 3 and the second feed pipe, the circulator are communicated and can carried out with cavity 9
Jet-loop including being communicated with diffusing opening 5 pumps 6, jet-loop can be pumped to returning for 6 inside points feed backs to the first feed pipe 3
Logical circulation road 7, first feed pipe 3, current return circuit 7 are equipped with the jet flow pressurizing pump 8 for conveying material, the jet-loop
The end connection discharge end of pump 6.
The concrete technology flow process of S3, S4 is, 60 degrees Celsius are heated to after the allotment of water penetration polyaminoester emulsion, by constant displacement pump with
3.5-4 kilograms of pressure squeezes into jet mixing device, and about 2/3 mixture can pass through cycle again after being stirred with hydroscopic high-molecular resin
Stirring, specially water penetration polyaminoester emulsion is transferred to the first feed pipe 3 by constant displacement pump, and then water penetration polyaminoester emulsion enters
Into cavity 9, hydroscopic high-molecular resin is transported at expanding mouth 5 by jetting stream vacuum shifting pump and with exporting out of cavity 9
Water penetration polyaminoester emulsion carries out jet mixing operation in jet-loop pump 6, is stirred the jet-loop pump 6 after operation by one
Part mixes are transported to next step curing process, by another part mixture by 7 reflux cycle of current return circuit to first into
It is tentatively mixed with water penetration polyaminoester emulsion in expects pipe, the height for being mixed with water penetration polyaminoester emulsion is formed after preliminary mixing
Molecule water-absorbing resin SAP 1 is entered back into and hybrid technique is repeated in cavity 9, and wherein current return circuit 7 is equipped with to convey mixture
Jet flow pressurizing pump 8, ventilating air in the current return circuit 7, wherein the first feed pipe 3, which is equipped with jet flow pressurizing, pumps 8, jet flow pressurizing pump
8 are mixed with the hydroscopic high-molecular resin of permeable polyaminoester emulsion for conveying, and after being sufficiently stirred, permeable polyaminoester emulsion can be
Under surface tension of liquid effect, simultaneously primary solidification is uniformly distributed outside hydroscopic high-molecular resin.Primary solidification forms the height with shell 2
Molecule water-absorbing resin SAP 1 is dispersed on the high temperature resistant belt for being coated with Teflon, by 6-8 minutes heat of 105-110 degree
Shelling 2 is fully cured after wind curing, wherein hydroscopic high-molecular resin and polytetrahy-drofuran mass fraction ratio is 100:1–
15:Between 1.
Wherein hydroscopic high-molecular resin is composed of two kinds of emulsification products, and formula is as follows：
The oil phase preparatory process of two kinds of lotions
Lotion I oil phases：Acrylic acid-2-ethyl caproite 65%, ethylene glycol dimethacrylate 25%, glyceryl linoleate
With trimerization tristerin composite emulsifier 7%, octadecyldimethyl ammonium chloride (assistant for emulsifying agent) 3%
Lotion II oil phases：2-hydroxypropyl acrylate 49%, methacrylic acid -2- hydroxy propyl esters 21%, glycol dinitrate
Base acrylate 19%, dimerization olein and glyceryl laurate ester composite emulsifier 11%
The water phase preparatory process of two kinds of lotions:Solid sodium chloride is mixed according to 3.5% ratio with pure water, and using on a small quantity
Hydrochloric acid adjusts water phase Ph values to 6.2 or so.
Initiator water phase preparatory process:Ammonium persulfate and pure water are configured to initiator water phase according to 2.5% ratio.
Two kinds of lotion (lotion I after emulsification：Lotion II is 1:2) successively it is coated on the high temperature resistant that surface is coated with Teflon layer
On belt, polymerization and the discharge of water phase are carried out into continuous two benches high temperature tunnel furnace, by first stage degree continuous tunnel furnace (temperature
Degree be set as 110 degrees Celsius) lotion completed polymerization form hydroscopic high-molecular resin.
Jet stream compression system and jet mixing system are used in S3, S4, hydroscopic high-molecular resin is organic without any band
The device (such as mechanical pump with impeller) of tool shear action, molecule particles will not occur any mechanical damage and influence to absorb water
Effect.
Product using hydroscopic high-molecular resin before SMS spunbonds melt spraying non-woven fabrics 38 or dust-free paper is fixed on, need into
Row pretreating process, i.e., by the special device in S3, S4 using circulating jet stirring technique in macromolecule commercial pellet outsourcing
It covers last layer water penetration polyurethane elastic emulsion and cures shelling.The purpose of this technique is：In general, macromolecule
Grain close-packed arrays in the product, if it be fixed using hot melt adhesive, polymeric particles are under the osmosis of hot melt adhesive
Key functional groups, which can fail, causes water absorbing properties drastically to decline, and product will be unable to reach strong water sorption.When macromolecule water uptake tree
Fat forms hydroscopic high-molecular resin SAP 1, hydroscopic high-molecular resin SAP 1 after the cladding pretreatment of water penetration polyurethane
One layer of permeable shell will be formed outside, and the key functional groups that hydroscopic high-molecular resin SAP 1 plays water suction guiding function will not be directly sudden and violent
Dew is contacted with hot melt adhesive, and this layer of shell 2 is on water that the effect of blocking will not influence hydroscopic high-molecular resin SAP 1 after absorption
Strand unfold and expand.Meanwhile these water penetration polyaminoester emulsions can also provide additional permeable gap and channel, improve
The first absorption rate of hydroscopic high-molecular resin SAP 1.
It is intuitively compared by Figure 12, Figure 13, when the hydroscopic high-molecular resin particle not wrapped up is densely arranged, is inhaled for the first time
Surface layer macromolecule can extend and into hydrated gel shape after water, so as to close hydrone to the path of granulation mass diffusion inside.It is this
Effect has seriously affected the high molecular first rate of water absorption of dense arrangement and total multiplying power that absorbs water.
It is high when we are after water absorbing polymer particle is coated with a floor height water penetration polyurethane elastic emulsion and forms permeable shell
Enough moisture subchannels will be reserved between molecule particles.Even if polymeric particles are by hot melt adhesive partial penetration, in the poly- ammonia of water penetration
Under the protection of ester lotion elastic container, still retain with the functional group of hydrone effect and channel.So that macromolecule cannot be with warm
Melten gel is in direct contact to be solved at all using this industry problems.
The specific implementation of S5 is as follows：The hydroscopic high-molecular resin SAP 1 obtained after curing is transmitted continuously to macromolecule
Hydroscopic high-molecular resin SAP 1 18 in high-order buffer tank, in macromolecule high position buffer tank 18 compensates continuous metering by dynamic
Device control is delivered continuously to macromolecule low level buffer tank 24, and wherein hydroscopic high-molecular resin SAP 1 is shifted by jetting stream vacuum
Pump 17 is delivered continuously in macromolecule high position buffer tank 18, the 18 times connections of macromolecule high position buffer tank and bridge-type load cell 21
The weighing pot 20 being fixedly connected, 20 lower section connection macromolecule low level buffer tank 24 of weighing pot, macromolecule high position buffer tank 18 is with claiming
The continuous electric control valve 19 of number is equipped between measuring tank 20, it is continuous that number is equipped between weighing pot 20 and macromolecule low level buffer tank 24
Electric control valve 19,21 one end of bridge-type load cell are fixed on the other end on support bracket and are fixedly connected with weighing pot 20, bridge-type
The continuous electric control valve 19 of load cell 21, number is with making special continuous conveying of the macromolecule using dynamic compensation continuous metering
The dynamic process control system 23 of method of supplying connects, and number is adjusted even according to technological parameter in dynamic process control system 23
Continuous electric control valve 19 makes hydroscopic high-molecular resin SAP 1 controllably be transferred to weighing by gravity in macromolecule high position buffer tank 18
In tank 20, the hydroscopic high-molecular resin SAP 1 being transferred in weighing pot 20 is controllably transferred to macromolecule low level caching by gravity
In tank 24, hydroscopic high-molecular resin SAP 1 is finally made to carry out being delivered continuously to next step process in steady controllable mass range
In, wherein the supply curve of technique can intuitively be obtained by Figure 10.And entire continuous conveying device be set to PC plate form every
From being closed in cover, positioned inside industrial dehumidifier 25, and discharge outlet 26 is set, entire continuous conveying device is in humidity
It runs in the environment of 15%-20%, adheres to avoid caking caused by when hydroscopic high-molecular resin 1 moisture absorptions of SAP or in tank skin
Happen.
Whole process is shifted using jetting stream vacuum in S5 or force of gravity, polymeric particles carry mechanical shear without any
The device (such as mechanical pump with impeller) of effect is cut, polymeric particles will not occur any mechanical damage and influence water suction effect
Fruit.
Weighing pot buffer stage is set, and by process control microcomputer, using pid control algorithm, to entrance and exit
The continuous electric control valve 19 of numeric type applies control.So that macromolecule low level buffer tank 24 in macromolecule " liquid level " remain at compared with
In small fluctuation range.
Hydroscopic high-molecular resin SAP 1 compensates the special continuous conveying method of supplying of continuous metering using dynamic, ensure that
Macromolecule applies the continuous-stable of quality in absorbing material of the present invention, is less than per the fluctuation of 20cm length product macromolecules content
0.5%.
The first macromolecule printing equipment, the second macromolecule printing equipment wherein in S6, S8 are macromolecule printing equipment,
Wherein the continuous printing equipment of macromolecule includes macromolecule low level buffer tank 24, for being set to 24 lower section of macromolecule low level buffer tank
Grain arranges channel 28, receives from the transfer roll 29 for arranging 28 material of channel, and wherein 29 lower section of transfer roll, which is correspondingly provided with, is sprayed with
The SMS spunbonds melt spraying non-woven fabrics 38 of hot melt adhesive or the dust-free paper for being sprayed with hot melt adhesive, the macromolecule low level buffer tank 24 with
Grain is equipped with macromolecule outlet valve 27 between arranging channel 28, and the transfer roll 29 includes transfer roll fixing axle 37, activity is placed on
37 outer surface of transfer roll fixing axle simultaneously passes through the transfer rolle rsleeve that rotation works, and the transfer rolle rsleeve includes being placed on transfer
The transfer roll inner layer sleeve 31 of 37 outer surface of roller fixing axle, the transfer roll outer layer sleeve 30 for being coated at transfer roll inner layer sleeve 31,
Fitting is set to the transfer roll middle level filter 32 between transfer roll inner layer sleeve 31 and transfer roll outer layer sleeve 30, the transfer roll
Outer layer sleeve 30 is equipped with multiple through-holes 36 for being used to implement specific distribution position and being printed, and the transfer roll inner layer sleeve 31 is set
There are multiple conical through-holes 35 with 36 corresponding connection of through-hole, the transfer roll fixing axle 37 is equipped with to be flexibly connected in transfer roll
The bearing of layer sleeve 31, the negative pressuren zone 33 formed by transfer roll fixing axle partition board, the positive pressure formed by transfer roll fixing axle partition board
Area 34, the connection corresponding with conical through-hole 35 of the zone of positive pressure 34, negative pressuren zone 33.
Wherein transfer roll fixing axle 37 is the structure of cylinder formed surface trepanning and boring, and inside is divided into two fans
Shape region.Partially clockwise 2 degree to directly vertically below partially clockwise 3 degree are negative wherein right over corresponding vertical direction
Pressure area 33 is zone of positive pressure 34 at directly vertically below partially clockwise 3 degree to directly vertically below partially counterclockwise 2 degree, respectively
By generating negative pressure and positive pressure axially introduced into vacuum and compressed air.
Metal mesh of the transfer roll middle level filter 32 for 100 mesh of aperture, transfer roll inner layer sleeve 31, transfer roll outer layer jacket
Several through-holes 36, conical through-hole 35, inner-outer sleeve are distributed to the requirement that hydroscopic high-molecular resin SAP 1 is distributed according to product on cylinder 30
Through-hole 36, conical through-hole 35 on cylinder correspond.1 average grains of hydroscopic high-molecular resin SAP are bigger than metal mesh aperture, because
This can not be accumulated by metal mesh in the through-hole 36 of transfer roll outer layer sleeve 30 in operation.
Continuous printing technology concrete mode in S6, S8 is as follows, and hydroscopic high-molecular resin SAP 1 is cached from macromolecule low level
Tank 24 is exported by macromolecule outlet valve 27.After arranging the arrangement of channel 28 by particle, hydroscopic high-molecular resin SAP 1 can
It is homodisperse, and concentrate on particle under the effect of gravity and arrange the outlet of channel 28 output.It is applied to and sprayed by transfer roll 29
On the SMS spunbonds melt spraying non-woven fabrics 38 for spilling hot melt adhesive 39 or the dust-free paper for having sprayed hot melt adhesive 39, hydroscopic high-molecular resin SAP
1 accumulates under the action of rolle rsleeve negative pressuren zone 33 is transferred in the logical of transfer roll outer layer sleeve 30 after the particle arrangement output of channel 28
In hole 36.When through-hole 36 rotates to zone of positive pressure 34, hydroscopic high-molecular resin SAP 1 is blown out through-hole 36, is transferred to and has sprayed
On the SMS spunbonds melt spraying non-woven fabrics 38 for spilling hot melt adhesive 39 or the dust-free paper for having sprayed hot melt adhesive 39.SMS spunbond melt spraying non-woven fabrics
38 or dust-free paper by linear velocity it is identical with 29 surface linear velocity of transfer roll.
Continuous printing equipment is beaten by macromolecule respectively in S6, S8 technological process and puts progress consecutive tracking printing the first macromolecule suction
Water-resin SAP 10, the second hydroscopic high-molecular resin SAP 11 are meltblown to the first SMS spunbonds for being coated with different levels hot melt adhesive 39
It is fixed on the different location of non-woven fabrics 15 or dust-free paper, wherein it is first to print the first hydroscopic high-molecular resin SAP 10
The continuous printing equipment of macromolecule, the second hydroscopic high-molecular resin SAP 11 of printing is the continuous printing equipment of the second macromolecule,
The continuous printing equipment of macromolecule in S6, S8 can realize that the hydroscopic high-molecular resin SAP1 stablized at a high speed is continuously fixed
Amount transfer, the continuous printing equipment of the macromolecule can arrange to realize positioning point by changing the position of transfer roll sleeve through hole 36
Cloth, while can also be carried out arranging positioning hydroscopic high-molecular resin SAP 1 according to psychological need.
In the present invention：Product is being fixed on SMS spunbonds melt spraying non-woven fabrics 38 or dust-free paper using hydroscopic high-molecular resin
Before, it needs to carry out pretreating process, i.e., circulating jet stirring technique is used outside macromolecule commercial pellet by special device
Cladding last layer water penetration polyurethane elastic emulsion simultaneously cures shelling 2, and one layer of permeable shell, macromolecule water uptake will be formed outside particle
The key functional groups of SAP water suction guiding function of resin will not directly expose to be contacted with hot melt adhesive, and this layer of shell 2 does not block water
Resistance effect will not influence the strand of hydroscopic high-molecular resin after absorption and unfold and expand.Meanwhile the poly- ammonia of these water penetrations
Ester can also provide additional permeable gap and channel, improve the first absorption rate of hydroscopic high-molecular resin, and the present invention extensively should
For products such as medical operation mattress, adult diaper, baby paper diaper, sanltary towels..
Further：The conveying high score of controllable ration is carried out by water absorbing resin particle continuous conveying and dynamic metering device
In sub- water-absorbing resin SAP 1 to the continuous printing equipment of macromolecule, the continuity and controllability of production ensure that；Macromolecule is continuously beaten
Printing equipment, which is put, carries out positioning transfer hydroscopic high-molecular resin SAP 1 to spunbond melt spraying non-woven fabrics 38 or dust-free paper, which ensures
Branch mode is made to become easy while the continuity and controllability of production, in the pretreatment unit of S3, S4, is increased by jet stream
Pressure shifting pump carries out conveying hydroscopic high-molecular resin, ensure that the stabilization of its structure, while carry out soon by jet mixing device
Hydroscopic high-molecular resin is distributed in water penetration polyaminoester emulsion by speed, and mixed effect is good and ensure that the continuous of production
Operation.
Claims (9)
1. a kind of absorbing material, including SMS spunbonds melt spraying non-woven fabrics (38), it is characterised in that：The SMS spunbonds melt spraying non-woven fabrics
(38) including the first SMS spunbonds melt spraying non-woven fabrics (15), the 2nd SMS spunbonds melt spraying non-woven fabrics (16) that are mutually permanently connected, institute
It states in the first SMS spunbonds melt spraying non-woven fabrics (15) and the 2nd SMS spunbonds melt spraying non-woven fabrics (16) and is fixed with macromolecule water uptake tree
Fat SAP (1), the hot melt adhesive (39) that hydroscopic high-molecular resin SAP (1) or SMS spunbonds melt spraying non-woven fabrics (38) are fixed, institute
It is that the macromolecule water uptake tree of shell (2) that the curing of water penetration polyaminoester emulsion forms is wrapped up on surface layer to state hydroscopic high-molecular resin SAP (1)
Fat.
2. a kind of absorbing material according to claim 1, it is characterised in that：The hydroscopic high-molecular resin SAP (1) is including setting
It is placed in the first hydroscopic high-molecular resin SAP (10), the second hydroscopic high-molecular resin SAP (11) of different levels, the hot melt adhesive
(39) it is hot including being fixed the first of the first SMS spunbonds melt spraying non-woven fabrics (15) and the 2nd SMS spunbonds melt spraying non-woven fabrics (16)
Melten gel (12), for fixing the first hydroscopic high-molecular resin SAP (10) in second on the first SMS spunbonds melt spraying non-woven fabrics (15)
Hot melt adhesive (13), for separating and being fixed on third hot melt adhesive (14) on the first hydroscopic high-molecular resin SAP (10), described second
Hydroscopic high-molecular resin SAP (11) is bonded with the 2nd SMS spunbonds melt spraying non-woven fabrics (16), first hydroscopic high-molecular resin
SAP (10), the second hydroscopic high-molecular resin SAP (11) surface layer be enclosed with the curing of water penetration polyurethane elastic emulsion and form
Shell (2).
3. a kind of absorbing material according to claim 1 or claim 2, it is characterised in that：The 2nd SMS spunbond melt spraying non-woven fabrics
(16) both sides be arc, the 2nd SMS spunbonds melt spraying non-woven fabrics (16) the head and the tail both ends with the first SMS spunbond melt spraying non-woven fabrics
(15) it is fixed.
4. a kind of absorbing material according to claim 2, it is characterised in that：Second hot melt adhesive (13) and third hot melt adhesive
(14) part mutually bonding forms the first hydroscopic high-molecular resin SAP (10), the second hydroscopic high-molecular resin that will position distribution
SAP (11) is separated into the continuous closed area in multiple sections.
5. a kind of absorbing material according to claim 1, it is characterised in that：The SMS spunbonds melt spraying non-woven fabrics (38) can replace
It is changed to dust-free paper.
6. a kind of preparation method of absorbing material, it is characterised in that：It is made of following preparation process,
S1, hot melt adhesive are melted by hot melt adhesive machine；
S2, by the first SMS spunbonds melt spraying non-woven fabrics (15) unreeled and tension force, material correction, S1 melting hot melt adhesive
(39) it is coated, forms the second hot melt adhesive (13)；
Hydroscopic high-molecular resin is carried out jetting stream vacuum transfer, and carry out jet mixing with water penetration polyurethane elastic emulsion by S3；
S4, the product after the jet mixing of S3 is carried out hot setting gathers hydroscopic high-molecular resin outer wrapping last layer water penetration
Urethane elastic emulsion simultaneously cures shelling (2), and the hydroscopic high-molecular resin SAP (1) obtained after curing continuously transmits macromolecule height
In position buffer tank (18)；
S5, the hydroscopic high-molecular resin SAP (1) in macromolecule high position buffer tank (18) pass through dynamic and compensate continuous metering device control
System is delivered continuously to macromolecule low level buffer tank (24)；
S6, by the hydroscopic high-molecular resin SAP (1) of macromolecule low level buffer tank (24) in S5
It continuously transmits to the continuous printing equipment of the first macromolecule, the continuous printing equipment of the first macromolecule is by hydroscopic high-molecular resin
SAP (1) positioning is transferred on the first SMS spunbonds melt spraying non-woven fabrics (15) that S2 is coated through the second hot melt adhesive (13)；
The melting hot melt adhesive of S1 is sprayed on the hydroscopic high-molecular resin SAP (1) of S6 and forms third hot melt adhesive (14) and consolidate by S7
Determine hydroscopic high-molecular resin SAP (1)；
The hydroscopic high-molecular resin SAP (1) of macromolecule low level buffer tank (24) in S5 is continuously transmitted to the second macromolecule and connected by S8
Hydroscopic high-molecular resin SAP (1) positioning is transferred to the third heat in S7 by continuous printing equipment, the continuous printing equipment of the second macromolecule
Melten gel is fixed on (14)；
2nd SMS spunbonds melt spraying non-woven fabrics (16) are unreeled and tension force, material correction, are heated with the melting of S1 by S9
Glue (39) is coated is fixed and is formed the same of the first hot melt adhesive (12) with the first SMS spunbonds melt spraying non-woven fabrics (15) afterwards
When and wrap up the entire article of S8, winding, packaging.
7. a kind of preparation method of absorbing material according to claim 6, it is characterised in that：It is calculated with mass percent, SMS is spun
Viscous melt spraying non-woven fabrics (38) mass percent 10%-17%, hydroscopic high-molecular resin mass percent 82%-90%, water penetration
Polyurethane elastic emulsion mass percent 1%-5%, hot melt adhesive (39) mass percent 5%-10%.
8. a kind of preparation method of absorbing material described according to claim 6 or 7, it is characterised in that：The SMS spunbonds are meltblown nothing
Woven fabric (38) thickness range is 8-14 grams every square metre.
9. a kind of preparation method of absorbing material described according to claim 6 or 7, it is characterised in that：The SMS spunbonds are meltblown nothing
Woven fabric (38) can be replaced dust-free paper.
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| CN201711471261.1A CN108159478A (en) | 2017-12-27 | 2017-12-27 | A kind of absorbing material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111662672A (en) * | 2019-03-06 | 2020-09-15 | 广州德渊精细化工有限公司 | Hydrophilic adhesive and synthesis method and application thereof |
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Application publication date: 20180615 |