CN108852633A - A kind of environmental protection blotting paper - Google Patents
A kind of environmental protection blotting paper Download PDFInfo
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- CN108852633A CN108852633A CN201810758693.9A CN201810758693A CN108852633A CN 108852633 A CN108852633 A CN 108852633A CN 201810758693 A CN201810758693 A CN 201810758693A CN 108852633 A CN108852633 A CN 108852633A
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- Prior art keywords
- water
- parts
- blotting paper
- reaction kettle
- environmentally friendly
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/31—Gums
- D21H17/32—Guar or other polygalactomannan gum
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/36—Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/53—Polyethers; Polyesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530007—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made from pulp
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Dispersion Chemistry (AREA)
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- Absorbent Articles And Supports Therefor (AREA)
Abstract
The present invention relates to sanitary product technical fields, and in particular to a kind of environmental protection blotting paper；The blotting paper includes upper clean paper layer, lower clean paper layer and intermediate water suction interlayer, and upper clean paper layer and lower clean paper layer form bound edge by hot-melt adhesion techniques；Water suction interlayer includes by the water-absorbing core of high fluffy non-woven wraps, and water-absorbing core is by composite water absorbing agent and wood pulp cellulose according to 2:3 mass ratio is mixed with；Composite water absorbing agent is using hydroscopic high-molecular resin and inorganic adsorbent carrier is compound is prepared；The blotting paper has water absorption rate height, the good advantage of water lock, and has good natural degradation performance, very environmentally protective.
Description
Technical field
The present invention relates to sanitary product technical fields, and in particular to a kind of environmental protection blotting paper.
Background technique
Blotting paper is a kind of for absorbing the health cleaning articles of liquid, widely used in daily nursing field, including female
Property panty liner, children's disposable paper urine pants, the moisture absorption paper handkerchief for kitchen use that deoils, disposable closestool pad etc..The material is logical
Often it is combined by the covering material of outer layer and internal hygroscopic materials.
The Water-absorption core body of conventional absorbent paper or other absorbent devices is protective layer frequently with three-decker, upper layer and lower layer, in
Between be water-absorption particle carrier, and hydroscopic high-molecular resin particle（SAP）On uniform sprinkling water-absorption particle carrier, macromolecule is inhaled
Water-resin has good water imbibition and water lock as most important water-absorbent material in water suction carrier.But because water suction
The adhesion effect of grain is poor, therefore also needs to be coated using the material with good permeable effect, is then filled, from
And avoid internal water-absorption particle leakage.This both increases production cost, and the thickness of Water-absorption core body is also caused to increase, pliability and
Comfort reduces.
On the other hand, the water absorbing agent that traditional Water-absorption core body uses is water absorbing resin particle, and this particle is produced into
This is higher, and natural degradation performance is poor；After a large amount of uses, the harmless treatment higher cost of waste, the safety of product,
Feature of environmental protection relative deficiency.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of environmentally friendly blotting paper, which has water suction
Rate is high, the good advantage of water lock, and has good natural degradation performance, very environmentally protective.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of environmental protection blotting paper, including upper clean paper layer, lower clean paper layer and intermediate water suction interlayer, upper clean paper layer and lower nothing
Dirt paper layer forms bound edge, the completely water suction interlayer inside cladding by hot-melt adhesion techniques；Water suction interlayer includes by high fluffy nonwoven
The water-absorbing core of cloth package, water-absorbing core is by composite water absorbing agent and wood pulp cellulose according to 2:3 mass ratio is mixed with.
Preferably, the thickness of water suction interlayer accounts for the 60% of blotting paper thickness.
In the present invention, the preparation method of composite water absorbing agent includes the following steps：
（1）According to mass fraction, by 50 parts of acrylic acid, 6 parts of methacrylic acids, the aqueous sodium acrylate solution of 40 parts of 35wt%, 0.05
Part triallyl phosphate, 0.04 part of polyethyleneglycol diglycidylether and 25 parts of deionized waters are added in reaction kettle and mix, and
It is filled with nitrogen atmosphere into reaction kettle to be protected, keeping the temperature in reaction kettle is 18-20 DEG C, is then drawn to reaction kettle dropwise addition
Send out agent, the initiator used successively includes 0.1 part of 5wt% ammonium persulfate solution, the sodium hydrogensulfite of 0.15 part of 5wt% and 0.2 part
5% tert-butyl hydroperoxide solution；Polymerization reaction stops stirring after starting, and after the completion of polymerization reaction, product is sent to 80 DEG C
In water-bath aging pond, aging process 10-15min；Then it gel will be obtained will be sent in double screw extruder to squeeze out, and by cutting
Roll mill refinement is cut, gel particle obtains required polyacrylic resin after the processing of the heated drying of pneumatic drier；
（2）By 80 parts of polyacrylic resins, 15 parts of starch-acrylic acid graft polymer and 8 parts of saponified vinyl acetate-acrylic acid
Ester copolymer is added in reaction kettle and mixes, and 0.1 part of pentaerythrite is then added into reaction kettle, and 0.3 part of propylene glycol two is shunk
Glycerin ether, 6 parts of polyethylene glycol, 2 parts of tetraethylene glycols and 40 parts of deionized waters, is stirred to react 30- with 150-157 DEG C of temperature
40min obtains water imbibition gel-like product；
（3）According to mass parts ratio, by 40 parts of bentonites, 15 parts of nano-attapulgites, 7 parts of zeolite molecular sieves and 3 parts mesoporous two
Silica is added in batch mixer, is uniformly mixed to obtain carrier mass, and carrier mass is then added to 5 times of volumes
In the potassium hydroxide solution of 0.8mol/L, with 40-45 DEG C of temperature water bath's heating and decentralized processing 2-2.5h, then by slurries mistake
Filter, washing, dry, crushing, complete the surface modification treatment of adsorptive support；
（4）By 80 parts of steps（2）In gel-like product, 7 parts of guar gum powder, 1.4 parts of diethylene-triamine pentaacetic acids chelating
Agent, 1.3 parts of phthalic acids, 0.5 part of sodium acetate, 250 parts of steps（3）In surface modified carrier substance and 600 parts of deionizations
Water is added in reaction kettle, and with the rate of dispersion of 80-90 DEG C of temperature and 650-800r/min, high speed dispersion is handled and kept the temperature
30-35min is reacted, is spread out on the silk screen of hot air drying machine after then filtering product, it is dry with 150-165 DEG C of temperature
2-3h is handled, the product after drying is broken into the pulvis of 250-300 mesh with vibrating pulverizer, obtains required composite water absorbing agent.
Wherein, step（1）The partial size of gel particle after middle cutting roll mill micronization processes is 0.2-0.5mm.
Step（3）In bentonite selection by ion exchange technique insertion organic cation coverture organic swelling is made
Soil.
Preferably, water-absorbing core is prepared using wet type bonding dry method of paper-making technique.
Preferably, adhesive used in wet type Method for bonding paper technology is Emulsion Adhesive.
Preferably, the fluffy non-woven fabrics of height outside the water-absorbing core of water suction interlayer is sutured using hot-melt adhesion techniques.
Preferably, high fluffy non-woven fabrics and water-absorbing core compound tense, water suction wicking surface are coated with hot melt adhesive, high fluffy non-woven fabrics and suction
Water core carries out roll-in bonding.
Preferably, the bound edge of upper clean paper layer and lower clean paper layer is formed using four side edge-melting edge banding techniques.
The present invention has following beneficial effect：
The type blotting paper has the advantages that water imbibition, water lock are good, is highly suitable for panty liner for women, children are with once
Property paper diaper, the moisture absorption paper handkerchief for kitchen use that deoils, the production preparation of the daily necessities such as disposable closestool pad, and because using special
Composite absorbent material replaces raw material of the SAP water-absorbing resin as Water-absorption core body, improves the pliability and comfort of blotting paper, also
The degradation property of material is improved, there is very outstanding economic value and the value of environmental protection.
Specific embodiment
Below with reference to embodiment, further description of the specific embodiments of the present invention, and following embodiment is only used for more
Technical solution of the present invention is clearly demonstrated, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of environmental protection blotting paper, including upper clean paper layer, lower clean paper layer and intermediate water suction interlayer, upper clean paper layer and lower nothing
Dirt paper layer forms bound edge, the completely water suction interlayer inside cladding by hot-melt adhesion techniques；Water suction interlayer includes by high fluffy nonwoven
The water-absorbing core of cloth package, water-absorbing core is by composite water absorbing agent and wood pulp cellulose according to 2:3 mass ratio is mixed with.Water absorbing clip
The thickness of layer accounts for the 60% of blotting paper thickness.
In the present embodiment, the preparation method of composite water absorbing agent includes the following steps：
（1）According to mass fraction, by 50 parts of acrylic acid, 6 parts of methacrylic acids, the aqueous sodium acrylate solution of 40 parts of 35wt%, 0.05
Part triallyl phosphate, 0.04 part of polyethyleneglycol diglycidylether and 25 parts of deionized waters are added in reaction kettle and mix, and
It is filled with nitrogen atmosphere into reaction kettle to be protected, keeping the temperature in reaction kettle is 18 DEG C, is then added dropwise and causes to reaction kettle
Agent, the initiator used successively include 0.1 part of 5wt% ammonium persulfate solution, the sodium hydrogensulfite of 0.15 part of 5wt% and 0.2 part 5%
Tert-butyl hydroperoxide solution；Polymerization reaction stops stirring after starting, and after the completion of polymerization reaction, product is sent to 80 DEG C of water
It bathes in aging pond, aging process 10min；Then it gel will be obtained will be sent in double screw extruder to squeeze out, and pass through cutting roller
Mill refinement, the partial size of the gel particle after cutting roll mill micronization processes are 0.2-0.5mm, and gel particle passes through pneumatic conveying drying
After the heated drying processing of machine, required polyacrylic resin is obtained；
（2）By 80 parts of polyacrylic resins, 15 parts of starch-acrylic acid graft polymer and 8 parts of saponified vinyl acetate-acrylic acid
Ester copolymer is added in reaction kettle and mixes, and 0.1 part of pentaerythrite is then added into reaction kettle, and 0.3 part of propylene glycol two is shunk
Glycerin ether, 6 parts of polyethylene glycol, 2 parts of tetraethylene glycols and 40 parts of deionized waters, is stirred to react 30min with 150 DEG C of temperature, obtains
To water imbibition gel-like product；
（3）According to mass parts ratio, by 40 parts of bentonites, 15 parts of nano-attapulgites, 7 parts of zeolite molecular sieves and 3 parts mesoporous two
Silica is added in batch mixer, is uniformly mixed to obtain carrier mass, and carrier mass is then added to 5 times of volumes
In the potassium hydroxide solution of 0.8mol/L, with 40 DEG C of temperature water bath's heating and decentralized processing 2h, then slurries is filtered, are washed
It washs, dry, crush, complete the surface modification treatment of adsorptive support, wherein bentonite selection is inserted by ion exchange technique
Organobentonite is made in organic cation coverture；
（4）By 80 parts of steps（2）In gel-like product, 7 parts of guar gum powder, 1.4 parts of diethylene-triamine pentaacetic acids chelating
Agent, 1.3 parts of phthalic acids, 0.5 part of sodium acetate, 250 parts of steps（3）In surface modified carrier substance and 600 parts of deionizations
Water is added in reaction kettle, with the rate of dispersion of 80 DEG C of temperature and 650r/min, high speed dispersion processing and insulation reaction
30min is spread out on the silk screen of hot air drying machine after then filtering product, is dried 2h with 150 DEG C of temperature, dry
Product afterwards is broken into the pulvis of 250 mesh with vibrating pulverizer, obtains required composite water absorbing agent.
Water-absorbing core is prepared using wet type bonding dry method of paper-making technique.
Adhesive used in wet type Method for bonding paper technology is Emulsion Adhesive.
The fluffy non-woven fabrics of height outside the water-absorbing core of water suction interlayer is sutured using hot-melt adhesion techniques.
High fluffy non-woven fabrics and water-absorbing core compound tense, water suction wicking surface be coated with hot melt adhesive, high fluffy non-woven fabrics and water-absorbing core into
Row roll-in bonding.
The bound edge of upper clean paper layer and lower clean paper layer is formed using four side edge-melting edge banding techniques.
Embodiment 2
A kind of environmental protection blotting paper, including upper clean paper layer, lower clean paper layer and intermediate water suction interlayer, upper clean paper layer and lower nothing
Dirt paper layer forms bound edge, the completely water suction interlayer inside cladding by hot-melt adhesion techniques；Water suction interlayer includes by high fluffy nonwoven
The water-absorbing core of cloth package, water-absorbing core is by composite water absorbing agent and wood pulp cellulose according to 2:3 mass ratio is mixed with.Water absorbing clip
The thickness of layer accounts for the 60% of blotting paper thickness.
In the present embodiment, the preparation method of composite water absorbing agent includes the following steps：
（1）According to mass fraction, by 50 parts of acrylic acid, 6 parts of methacrylic acids, the aqueous sodium acrylate solution of 40 parts of 35wt%, 0.05
Part triallyl phosphate, 0.04 part of polyethyleneglycol diglycidylether and 25 parts of deionized waters are added in reaction kettle and mix, and
It is filled with nitrogen atmosphere into reaction kettle to be protected, keeping the temperature in reaction kettle is 18-20 DEG C, is then drawn to reaction kettle dropwise addition
Send out agent, the initiator used successively includes 0.1 part of 5wt% ammonium persulfate solution, the sodium hydrogensulfite of 0.15 part of 5wt% and 0.2 part
5% tert-butyl hydroperoxide solution；Polymerization reaction stops stirring after starting, and after the completion of polymerization reaction, product is sent to 80 DEG C
In water-bath aging pond, aging process 15min；Then it gel will be obtained will be sent in double screw extruder to squeeze out, and by cutting
Roll mill refinement, the partial size of the gel particle after cutting roll mill micronization processes are 0.2-0.5mm, and gel particle is dry by air-flow
After the heated drying processing of dry machine, required polyacrylic resin is obtained；
（2）By 80 parts of polyacrylic resins, 15 parts of starch-acrylic acid graft polymer and 8 parts of saponified vinyl acetate-acrylic acid
Ester copolymer is added in reaction kettle and mixes, and 0.1 part of pentaerythrite is then added into reaction kettle, and 0.3 part of propylene glycol two is shunk
Glycerin ether, 6 parts of polyethylene glycol, 2 parts of tetraethylene glycols and 40 parts of deionized waters, is stirred to react 40min with 157 DEG C of temperature, obtains
To water imbibition gel-like product；
（3）According to mass parts ratio, by 40 parts of bentonites, 15 parts of nano-attapulgites, 7 parts of zeolite molecular sieves and 3 parts mesoporous two
Silica is added in batch mixer, is uniformly mixed to obtain carrier mass, and carrier mass is then added to 5 times of volumes
In the potassium hydroxide solution of 0.8mol/L, with 45 DEG C of temperature water bath's heating and decentralized processing 2.5h, then slurries is filtered, are washed
It washs, dry, crush, complete the surface modification treatment of adsorptive support, wherein bentonite selection is inserted by ion exchange technique
Organobentonite is made in organic cation coverture；
（4）By 80 parts of steps（2）In gel-like product, 7 parts of guar gum powder, 1.4 parts of diethylene-triamine pentaacetic acids chelating
Agent, 1.3 parts of phthalic acids, 0.5 part of sodium acetate, 250 parts of steps（3）In surface modified carrier substance and 600 parts of deionizations
Water is added in reaction kettle, with the rate of dispersion of 90 DEG C of temperature and 800r/min, high speed dispersion processing and insulation reaction
35min is spread out on the silk screen of hot air drying machine after then filtering product, is dried 3h with 165 DEG C of temperature, dry
Product afterwards is broken into the pulvis of 300 mesh with vibrating pulverizer, obtains required composite water absorbing agent.
Water-absorbing core is prepared using wet type bonding dry method of paper-making technique.
Adhesive used in wet type Method for bonding paper technology is Emulsion Adhesive.
The fluffy non-woven fabrics of height outside the water-absorbing core of water suction interlayer is sutured using hot-melt adhesion techniques.
High fluffy non-woven fabrics and water-absorbing core compound tense, water suction wicking surface be coated with hot melt adhesive, high fluffy non-woven fabrics and water-absorbing core into
Row roll-in bonding.
The bound edge of upper clean paper layer and lower clean paper layer is formed using four side edge-melting edge banding techniques.
Embodiment 3
A kind of environmental protection blotting paper, including upper clean paper layer, lower clean paper layer and intermediate water suction interlayer, upper clean paper layer and lower nothing
Dirt paper layer forms bound edge, the completely water suction interlayer inside cladding by hot-melt adhesion techniques；Water suction interlayer includes by high fluffy nonwoven
The water-absorbing core of cloth package, water-absorbing core is by composite water absorbing agent and wood pulp cellulose according to 2:3 mass ratio is mixed with.Water absorbing clip
The thickness of layer accounts for the 60% of blotting paper thickness.
In the present embodiment, the preparation method of composite water absorbing agent includes the following steps：
（1）According to mass fraction, by 50 parts of acrylic acid, 6 parts of methacrylic acids, the aqueous sodium acrylate solution of 40 parts of 35wt%, 0.05
Part triallyl phosphate, 0.04 part of polyethyleneglycol diglycidylether and 25 parts of deionized waters are added in reaction kettle and mix, and
It is filled with nitrogen atmosphere into reaction kettle to be protected, keeping the temperature in reaction kettle is 18-20 DEG C, is then drawn to reaction kettle dropwise addition
Send out agent, the initiator used successively includes 0.1 part of 5wt% ammonium persulfate solution, the sodium hydrogensulfite of 0.15 part of 5wt% and 0.2 part
5% tert-butyl hydroperoxide solution；Polymerization reaction stops stirring after starting, and after the completion of polymerization reaction, product is sent to 80 DEG C
In water-bath aging pond, aging process 13min；Then it gel will be obtained will be sent in double screw extruder to squeeze out, and by cutting
Roll mill refinement, the partial size of the gel particle after cutting roll mill micronization processes are 0.2-0.5mm, and gel particle is dry by air-flow
After the heated drying processing of dry machine, required polyacrylic resin is obtained；
（2）By 80 parts of polyacrylic resins, 15 parts of starch-acrylic acid graft polymer and 8 parts of saponified vinyl acetate-acrylic acid
Ester copolymer is added in reaction kettle and mixes, and 0.1 part of pentaerythrite is then added into reaction kettle, and 0.3 part of propylene glycol two is shunk
Glycerin ether, 6 parts of polyethylene glycol, 2 parts of tetraethylene glycols and 40 parts of deionized waters, is stirred to react 35min with 155 DEG C of temperature, obtains
To water imbibition gel-like product；
（3）According to mass parts ratio, by 40 parts of bentonites, 15 parts of nano-attapulgites, 7 parts of zeolite molecular sieves and 3 parts mesoporous two
Silica is added in batch mixer, is uniformly mixed to obtain carrier mass, and carrier mass is then added to 5 times of volumes
In the potassium hydroxide solution of 0.8mol/L, with 43 DEG C of temperature water bath's heating and decentralized processing 2.2h, then slurries is filtered, are washed
It washs, dry, crush, complete the surface modification treatment of adsorptive support, wherein bentonite selection is inserted by ion exchange technique
Organobentonite is made in organic cation coverture；
（4）By 80 parts of steps（2）In gel-like product, 7 parts of guar gum powder, 1.4 parts of diethylene-triamine pentaacetic acids chelating
Agent, 1.3 parts of phthalic acids, 0.5 part of sodium acetate, 250 parts of steps（3）In surface modified carrier substance and 600 parts of deionizations
Water is added in reaction kettle, with the rate of dispersion of 85 DEG C of temperature and 700r/min, high speed dispersion processing and insulation reaction
32min is spread out on the silk screen of hot air drying machine after then filtering product, is dried 2.5h with 160 DEG C of temperature, is done
Product after dry is broken into the pulvis of 300 mesh with vibrating pulverizer, obtains required composite water absorbing agent.
Water-absorbing core is prepared using wet type bonding dry method of paper-making technique.
Adhesive used in wet type Method for bonding paper technology is Emulsion Adhesive.
The fluffy non-woven fabrics of height outside the water-absorbing core of water suction interlayer is sutured using hot-melt adhesion techniques.
High fluffy non-woven fabrics and water-absorbing core compound tense, water suction wicking surface be coated with hot melt adhesive, high fluffy non-woven fabrics and water-absorbing core into
Row roll-in bonding.
The bound edge of upper clean paper layer and lower clean paper layer is formed using four side edge-melting edge banding techniques.
Performance test
1, test the present embodiment in composite water absorbing agent water absorbing properties, and using Japanese catalyst W101 hydroscopic high-molecular resin as pair
Performance comparison is carried out according to group, obtains so descending test data：
Table 1：The water absorbing properties of composite water absorbing agent and control group in the present embodiment
2, the blotting paper in embodiment is cut according to the size of 9.5cmx37cm, tests the water imbibition of blotting paper in the present embodiment
Can, obtain following test result：
Table 2：The water suction heart the performance test results of blotting paper in the present embodiment
| Test item | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Uptake | g | 284.5 | 279.3 | 283.6 |
| Sliding milliosmolarity ml | ml | 4.2 | 3.5 | 3.8 |
| The amount of bleeding back | g | 10.2 | 9.7 | 10.1 |
Analyze the above experimental result discovery, the water suction of the water absorbing properties and SAP water-absorbing resin of the composite water absorbing agent in the present embodiment
Performance gap is smaller, can substitute water-absorbing core of the SAP water-absorbing resin as water-absorbent material and prepare；Type composite water absorbing agent preparation
The water absorption of blotting paper is larger, and bleeds back rate and sliding infiltration rate with lower, and the water lock effect of blotting paper is preferable.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of environmental protection blotting paper, it is characterised in that：The blotting paper includes upper clean paper layer, lower clean paper layer and intermediate suction
Water interlayer, upper clean paper layer and lower clean paper layer form bound edge, the completely water suction interlayer inside cladding by hot-melt adhesion techniques；
Water suction interlayer includes by the water-absorbing core of high fluffy non-woven wraps, and water-absorbing core is by composite water absorbing agent and wood pulp cellulose according to 2:3 matter
Amount ratio is mixed with.
2. a kind of environmentally friendly blotting paper according to claim 1, it is characterised in that：The thickness of the water suction interlayer accounts for blotting paper
The 60% of thickness.
3. a kind of environmentally friendly blotting paper according to claim 1, it is characterised in that：The preparation method packet of the composite water absorbing agent
Include following steps：
（1）According to mass fraction, by 50 parts of acrylic acid, 6 parts of methacrylic acids, the aqueous sodium acrylate solution of 40 parts of 35wt%, 0.05
Part triallyl phosphate, 0.04 part of polyethyleneglycol diglycidylether and 25 parts of deionized waters are added in reaction kettle and mix, and
It is filled with nitrogen atmosphere into reaction kettle to be protected, keeping the temperature in reaction kettle is 18-20 DEG C, is then drawn to reaction kettle dropwise addition
Send out agent, the initiator used successively includes 0.1 part of 5wt% ammonium persulfate solution, the sodium hydrogensulfite of 0.15 part of 5wt% and 0.2 part
5% tert-butyl hydroperoxide solution；Polymerization reaction stops stirring after starting, and after the completion of polymerization reaction, product is sent to 80 DEG C
In water-bath aging pond, aging process 10-15min；Then it gel will be obtained will be sent in double screw extruder to squeeze out, and by cutting
Roll mill refinement is cut, gel particle obtains required polyacrylic resin after the processing of the heated drying of pneumatic drier；
（2）By 80 parts of polyacrylic resins, 15 parts of starch-acrylic acid graft polymer and 8 parts of saponified vinyl acetate-acrylic acid
Ester copolymer is added in reaction kettle and mixes, and 0.1 part of pentaerythrite is then added into reaction kettle, and 0.3 part of propylene glycol two is shunk
Glycerin ether, 6 parts of polyethylene glycol, 2 parts of tetraethylene glycols and 40 parts of deionized waters, is stirred to react 30- with 150-157 DEG C of temperature
40min obtains water imbibition gel-like product；
（3）According to mass parts ratio, by 40 parts of bentonites, 15 parts of nano-attapulgites, 7 parts of zeolite molecular sieves and 3 parts mesoporous two
Silica is added in batch mixer, is uniformly mixed to obtain carrier mass, and carrier mass is then added to 5 times of volumes
In the potassium hydroxide solution of 0.8mol/L, with 40-45 DEG C of temperature water bath's heating and decentralized processing 2-2.5h, then by slurries mistake
Filter, washing, dry, crushing, complete the surface modification treatment of adsorptive support；
（4）By 80 parts of steps（2）In gel-like product, 7 parts of guar gum powder, 1.4 parts of diethylene-triamine pentaacetic acids chelating
Agent, 1.3 parts of phthalic acids, 0.5 part of sodium acetate, 250 parts of steps（3）In surface modified carrier substance and 600 parts of deionizations
Water is added in reaction kettle, and with the rate of dispersion of 80-90 DEG C of temperature and 650-800r/min, high speed dispersion is handled and kept the temperature
30-35min is reacted, is spread out on the silk screen of hot air drying machine after then filtering product, it is dry with 150-165 DEG C of temperature
2-3h is handled, the product after drying is broken into the pulvis of 250-300 mesh with vibrating pulverizer, obtains required composite water absorbing agent.
4. a kind of environmentally friendly blotting paper according to claim 3, it is characterised in that：The step（1）Middle cutting roll mill is thin
The partial size for changing treated gel particle is 0.2-0.5mm.
5. a kind of environmentally friendly blotting paper according to claim 3, it is characterised in that：The step（3）In bentonite selection
Organic cation coverture is inserted by ion exchange technique, and organobentonite is made.
6. a kind of environmentally friendly blotting paper according to claim 1, it is characterised in that：The water-absorbing core bonds dry method using wet type
It is prepared by paper technology.
7. a kind of environmentally friendly blotting paper according to claim 6, it is characterised in that：Make in the wet type Method for bonding paper technology
Adhesive is Emulsion Adhesive.
8. a kind of environmentally friendly blotting paper according to claim 1, it is characterised in that：Height outside the water-absorbing core of the water suction interlayer
Fluffy non-woven fabrics is sutured using hot-melt adhesion techniques.
9. a kind of environmentally friendly blotting paper according to claim 1, it is characterised in that：The fluffy non-woven fabrics of the height and water-absorbing core are compound
When, water suction wicking surface is coated with hot melt adhesive, and high fluffy non-woven fabrics and water-absorbing core carry out roll-in bonding.
10. a kind of environmentally friendly blotting paper according to claim 1, it is characterised in that：The upper clean paper layer and lower dust-free paper
The bound edge of layer is formed using four side edge-melting edge banding techniques.
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| CN201810758693.9A CN108852633A (en) | 2018-07-11 | 2018-07-11 | A kind of environmental protection blotting paper |
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| CN201810758693.9A CN108852633A (en) | 2018-07-11 | 2018-07-11 | A kind of environmental protection blotting paper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2590041A (en) * | 2021-03-26 | 2021-06-16 | Zhuang Wuyi | A preparation method of binder for textile fabrics |
| CN114259451A (en) * | 2021-12-28 | 2022-04-01 | 浙江邦良护理用品科技有限公司 | Wet tissue convenient for makeup removal and preparation method thereof |
| CN115054440A (en) * | 2022-06-10 | 2022-09-16 | 李璐阳 | Paper diaper and processing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0393815A (en) * | 1989-09-06 | 1991-04-18 | Sanyo Chem Ind Ltd | Water-absorbing resin composition |
| JP2000063511A (en) * | 1997-02-07 | 2000-02-29 | Mitsui Chemicals Inc | Production of crosslinked polyamino acid |
| CN201822973U (en) * | 2010-06-09 | 2011-05-11 | 庄雅哲 | Composite water absorbing flocculus |
| CN102700179A (en) * | 2012-05-29 | 2012-10-03 | 临安市振宇吸水材料有限公司 | Water absorption paper |
| CN105859948A (en) * | 2016-06-16 | 2016-08-17 | 赵兰 | Preparing method for composite high water absorbent material |
| CN107245127A (en) * | 2017-04-12 | 2017-10-13 | 广西民族大学 | A kind of preparation method of starch base composite high water absorption resin |
-
2018
- 2018-07-11 CN CN201810758693.9A patent/CN108852633A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0393815A (en) * | 1989-09-06 | 1991-04-18 | Sanyo Chem Ind Ltd | Water-absorbing resin composition |
| JP2000063511A (en) * | 1997-02-07 | 2000-02-29 | Mitsui Chemicals Inc | Production of crosslinked polyamino acid |
| CN201822973U (en) * | 2010-06-09 | 2011-05-11 | 庄雅哲 | Composite water absorbing flocculus |
| CN102700179A (en) * | 2012-05-29 | 2012-10-03 | 临安市振宇吸水材料有限公司 | Water absorption paper |
| CN105859948A (en) * | 2016-06-16 | 2016-08-17 | 赵兰 | Preparing method for composite high water absorbent material |
| CN107245127A (en) * | 2017-04-12 | 2017-10-13 | 广西民族大学 | A kind of preparation method of starch base composite high water absorption resin |
Non-Patent Citations (2)
| Title |
|---|
| 梁瑞婷 等: "凹凸棒/膨润土/聚丙烯酸钠复合吸水树脂的合成及其吸水速率", 《化工新型材料》 * |
| 范力仁 等: "超强吸水性蒙脱石/聚丙烯酸钠复合材料的研究", 《矿物岩石》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2590041A (en) * | 2021-03-26 | 2021-06-16 | Zhuang Wuyi | A preparation method of binder for textile fabrics |
| CN114259451A (en) * | 2021-12-28 | 2022-04-01 | 浙江邦良护理用品科技有限公司 | Wet tissue convenient for makeup removal and preparation method thereof |
| CN115054440A (en) * | 2022-06-10 | 2022-09-16 | 李璐阳 | Paper diaper and processing method thereof |
| CN115054440B (en) * | 2022-06-10 | 2023-08-25 | 李璐阳 | Paper diaper and processing method thereof |
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