CN110512463A - A kind of manufacturing process of eyeshield paper - Google Patents
A kind of manufacturing process of eyeshield paper Download PDFInfo
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- CN110512463A CN110512463A CN201910628020.6A CN201910628020A CN110512463A CN 110512463 A CN110512463 A CN 110512463A CN 201910628020 A CN201910628020 A CN 201910628020A CN 110512463 A CN110512463 A CN 110512463A
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- China
- Prior art keywords
- paper
- eyeshield
- sizing agent
- melanin
- added
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Classifications
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/34—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives 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
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/28—Colorants ; Pigments or opacifying agents
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention belongs to paper-making technology field more particularly to a kind of manufacturing process of eyeshield paper.A kind of manufacturing process of eyeshield paper, the following steps are included: A. prepares melanin solution: the aqueous slkali that pH is 10~14 being added in the reactor, melanin solution materials are added, 5~30min of stirring is completely dissolved melanin solution materials, then oxidant is added, it is stirred to react at 0~70 DEG C 5~48 hours, is gradually added in solution after the reaction after acid regulator adjusts pH to 8~12 and melanin solution is made；B. it prepares sizing agent: the resulting melanin solution of step A being added in sizing agent raw material, sizing agent is made after mixing evenly, the total sizing agent mass percent of melanin solution Zhan is 1%~20%；C. it coats sizing agent: sizing agent obtained is spread evenly across to the tow sides of paper, eyeshield paper is made.The manufacturing process that some blue light in light source can be absorbed the present invention provides one kind, play the role of protecting the eyeshield paper of eyes.
Description
Technical field
The invention belongs to paper-making technology field more particularly to a kind of manufacturing process of eyeshield paper.
Background technique
With the arrival in multimedia teaching epoch, the equipment such as multimedia overhead projector equipment, computer, ipad start gradually to enter into class
Hall, mobile phone, computer are increasingly becoming teen-age major distraction facility, they bring body more intuitive, lively, abundant to student
It tests, but also brings blue light crisis.
From the point of view of blue light crisis Producing reason, the high energy blue light of a large amount of 400nm-480nm wave bands is contained in artificial light.
The light of this wave band, wavelength is shorter, and energy is higher, can penetrate crystalline lens, reach retina, inhibits cytochrome oxidase living
Property, induce photooxidation reaction, retina cell promoted to generate a large amount of free radicals, cause RPE and the polyoxygenated damage of photosensory cell and
Apoptosis causes vision impairment, while inducing a variety of eye diseases.In order to pursue beauty, can be added in sheet processing production process
A large amount of brightening agents, fluorescer, while so that this paper is spotless white, also result in paper for the reflectivity one of harmful light
As up to 94%.And this paper is widely used in multiple uses such as student textbook, exercise-book, exercise volumes in such bad luck
Under eye-using environment, teen-age crystalline lens is more pure compared with adult, itself is lower for the filtering of high energy blue light, while view
Film is more fragile, it is easier to be injured by harmful light, cause vision impairment.In order to reduce damage of the high energy blue light to eyesight, grind
The paper that blue light eyeshield can be inhaled by making has great importance.
Summary of the invention
The some blue light in light source can be absorbed technical problem to be solved by the invention is to provide one kind, play protection eye
The manufacturing process of the eyeshield paper of eyeball effect.For this purpose, the invention adopts the following technical scheme:
A kind of manufacturing process of eyeshield paper, comprising the following steps:
A. melanin solution is prepared:
The aqueous slkali that pH is 10~14 is added in the reactor, melanin solution materials are added, 5~30min of stirring makes black
Pigment solution raw material is completely dissolved, and oxidant is then added, and is stirred to react 5~48 hours at 0~70 DEG C, after the reaction molten
It is gradually added in liquid after acid regulator adjusts pH to 8~12 and melanin solution is made；
B. sizing agent is prepared:
The resulting melanin solution of step A is added in sizing agent raw material, sizing agent, the black are made after mixing evenly
The plain total sizing agent mass percent of solution Zhan is 1%~20%；
C. sizing agent is coated:
Sizing agent obtained is spread evenly across to the tow sides of paper, eyeshield paper is made；Wherein,
The melanin solution materials are dopamine, Dopamine hydrochloride, 5,6- dihydroxy indole, 5-OHi, 6- hydroxyl
Base indoles, 7- oxyindole, 5-OHi -3- acetic acid, catechol, 4- oxyindole, 3- methylhydroxy indoles, 7- hydroxyl
One of -2 formic acid of indoles, -2 Ethyl formate of 5-OHi, 5-OHi -3- ethyl alcohol, the fluoro- 5-OHi of 4- or
A variety of mixtures；
The sizing agent raw material is rosin, unmodified starch, modified starch, polyvinyl alcohol, alkyl ketene dimer, alkenyl
One of succinic anhydride, hydroxymethyl cellulose or a variety of mixtures.
On the basis of by adopting the above technical scheme, technical solution further below is also can be used in the present invention:
In step A, the aqueous slkali is one of sodium hydroxide, potassium hydroxide, lithium hydroxide, ammonium hydroxide or a variety of
Mixture.
In step A, the oxidant is ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate, potassium bichromate, one in hydrogen peroxide
Kind or a variety of mixtures.
In step A, the acid regulator is one of hydrochloric acid, sulfuric acid, phosphoric acid, acetic acid, oxalic acid, nitric acid or a variety of
Mixture.
In step A, the mass ratio of the melanin solution materials and aqueous slkali is 1:(5~50), the melanin solution
The mass ratio of raw material and oxidant is 1:(0~1), the mass ratio of the melanin raw material and acid regulator is 1:(0.001
~10).
The blue light wavelength that the eyeshield paper absorbs is 400~500nm.
Eyeshield paper obtained by the present invention is especially suitable for manufacturing operation sheet, books, newspaper, magazine, wallpaper, poster paper
Deng.
The invention has the advantages that will be added to compared with conventional paper technology containing absorption harmful blue light function melanin
The sizing agent of solution is coated on the front and back sides of paper, and harmful blue light can be reflected obtained from, and it is close to play protection eyesight prevention
The paper of visual function.Compared with the paper of unused melanin sizing agent, the wavelength that can absorb 5%~50% is 400~500nm
Blue light, play protection the pre- myopic-preventing function of eyesight.
Specific embodiment
Following specific embodiments are the further explanations to method provided by the invention and technical solution, but are not construed as
Limitation of the present invention.
In present embodiment, No. CAS of each compound is specific as follows:
Embodiment one, a kind of manufacturing process of eyeshield paper, comprising the following steps:
A. melanin solution is prepared:
1kg dopamine powder is dissolved in the sodium hydroxide solution that 20kg and pH are 12, after 0.2kg ammonium persulfate is added
It is stirred to react under room temperature environment 24 hours, the concentrated hydrochloric acid that 100mL 1mol/L is added in solution after the reaction adjusts pH to 9
Poly-dopamine melanin solution is made afterwards；
B. sizing agent is prepared:
The resulting poly-dopamine melanin solution of 20kg step A is added in 2 tons of starch sizing agents, is made after mixing evenly
Poly-dopamine-starch sizing agent；
C. sizing agent is coated:
Poly-dopamine-starch sizing agent obtained is spread evenly across to the tow sides of paper, 100 tons of eyeshields are made
Paper.
Starch sizing agent is spread evenly across the tow sides of paper by comparative example one, and 100 tons of eyeshield paper are made.
It tests blue light absorption rate: under the irradiation of same LED light source, being made with spectroanalysis instrument difference testing example one
Eyeshield paper and comparative example one made from plain paper reflected ray spectrogram, calculate separately in 400~500nm blue region
Blue light strength IShieldAnd IIt is general, the blue light absorption rate of the eyeshield paper is calculated as (IShield-IIt is general)/IIt is general。
Blue light absorption rate test result are as follows: 25%.
Embodiment two, a kind of manufacturing process of eyeshield paper, comprising the following steps:
A. melanin solution is prepared:
1kg 5-OHi powder is dissolved in the potassium hydroxide solution that 20kg and pH are 11,0.5kg over cure is added
It is stirred to react 16 hours in the environment of 40 DEG C after sour potassium, the sulfuric acid that 10mL 1mol/L is added in solution after the reaction is adjusted
Polybenzazole melanin solution is made after pH to 9；
B. sizing agent is prepared:
The resulting polybenzazole melanin solution of 20kg step A is added in 1 ton of chitin modified starch sizing agent, stirring is equal
Obtained polybenzazole-modified starch sizing agent after even；
C. sizing agent is coated:
Polybenzazole obtained-modified starch sizing agent is spread evenly across to the tow sides of paper, 50 tons of eyeshields are made
Paper.
Glycan modified starch sizing agent is spread evenly across the tow sides of paper by comparative example two, and 50 tons of eyeshield paper are made.
It tests blue light absorption rate: under the irradiation of same LED light source, being made with spectroanalysis instrument difference testing example two
Eyeshield paper and comparative example two made from plain paper reflected ray spectrogram, calculate separately in 400~500nm blue region
Blue light strength IShieldAnd IIt is general, the blue light absorption rate of the eyeshield paper is calculated as (IShield-IIt is general)/IIt is general。
Blue light absorption rate test result are as follows: 37%.
Embodiment three, a kind of manufacturing process of eyeshield paper, comprising the following steps:
A. melanin solution is prepared:
1kg 5-OHi -3- acetic acid powder is dissolved in the lithium hydroxide liquid that 50kg and pH are 13,0.5kg is added
It is stirred to react 12 hours in the environment of 50 DEG C after hydrogen peroxide, 150g phosphorus acid for adjusting pH is added in solution after the reaction to after 9
Poly- 5-OHi -3- acetic acid melanin solution is made；
B. sizing agent is prepared:
The resulting poly- 5-OHi -3- acetic acid melanin solution of 50kg step A is added in 0.5 ton of starch sizing agent,
Poly- 5-OHi -3- acetic acid-starch sizing agent is made after mixing evenly；
C. sizing agent is coated:
Poly- 5-OHi -3- acetic acid-starch sizing agent obtained is spread evenly across to the tow sides of paper, to be made
30 tons of eyeshield paper.
Starch sizing agent is spread evenly across the tow sides of paper by comparative example three, and 30 tons of eyeshield paper are made.
It tests blue light absorption rate: under the irradiation of same LED light source, being made with spectroanalysis instrument difference testing example three
Eyeshield paper and comparative example three made from plain paper reflected ray spectrogram, calculate separately in 400~500nm blue region
Blue light strength IShieldAnd IIt is general, the blue light absorption rate of the eyeshield paper is calculated as (IShield-IIt is general)/IIt is general。
Blue light absorption rate test result are as follows: 45%.
Example IV, a kind of manufacturing process of eyeshield paper, comprising the following steps:
A. melanin solution is prepared:
1kg 5-OHi -3- ethyl alcohol powder is dissolved in the ammonia spirit that 15kg and pH are 12,0.1kg mistake is added
It is stirred to react 5 hours in the environment of 70 DEG C after ammonium sulfate, is added after 8g glacial acetic acid adjusts pH to 9 and makes in solution after the reaction
Obtain poly- 5-OHi -3- ethyl alcohol melanin solution；
B. sizing agent is prepared:
It is molten that the resulting poly- 5-OHi -3- ethyl alcohol melanin of 15kg step A is added in 1 ton of polyvinyl alcohol sizing agent
Poly- 5-OHi -3- ethyl alcohol-polyvinyl alcohol sizing agent is made in liquid after mixing evenly；
C. sizing agent is coated:
Poly- 5-OHi -3- ethyl alcohol-polyvinyl alcohol sizing agent obtained is spread evenly across to the tow sides of paper, with
100 tons of eyeshield paper are made.
Polyvinyl alcohol sizing agent is spread evenly across the tow sides of paper by comparative example four, and 100 tons of eyeshield paper are made.
It tests blue light absorption rate: under the irradiation of same LED light source, being made with spectroanalysis instrument difference testing example four
Eyeshield paper and comparative example four made from plain paper reflected ray spectrogram, calculate separately in 400~500nm blue region
Blue light strength IShieldAnd IIt is general, the blue light absorption rate of the eyeshield paper is calculated as (IShield-IIt is general)/IIt is general。
Blue light absorption rate test result are as follows: 18%.
Embodiment five, a kind of manufacturing process of eyeshield paper, comprising the following steps:
A. melanin solution is prepared:
0.8kg Dopamine hydrochloride powder and 0.2kg 5-OHi -2- formic acid are dissolved in the hydrogen that 30 kg and pH are 13
It in sodium hydroxide solution, is stirred to react under room temperature environment 24 hours, the careless acid for adjusting pH of 90g is added extremely in solution after the reaction
The melanin solution of poly- 5-OHi -2- formic acid and dopamine is made after 10；
B. sizing agent is prepared:
The black of the resulting poly- 5-OHi -2- formic acid of 30kg step A and dopamine is added in 3 tons of starch sizing agents
Poly-dopamine-starch sizing agent is made in pigment solution after mixing evenly；
C. sizing agent is coated:
Poly-dopamine-starch sizing agent obtained is spread evenly across to the tow sides of paper, 150 tons of eyeshields are made
Paper.
Starch sizing agent is spread evenly across the tow sides of paper by comparative example one, and 150 tons of eyeshield paper are made.
It tests blue light absorption rate: under the irradiation of same LED light source, being made with spectroanalysis instrument difference testing example one
Eyeshield paper and comparative example one made from plain paper reflected ray spectrogram, calculate separately in 400~500nm blue region
Blue light strength IShieldAnd IIt is general, the blue light absorption rate of the eyeshield paper is calculated as (IShield-IIt is general)/IIt is general。
Blue light absorption rate test result are as follows: 30%.
Although the present invention is described by reference to preferred embodiment, those skilled in the art answer
Work as understanding, within the scope of the claims, various variation in form and details can be made.
Claims (6)
1. a kind of manufacturing process of eyeshield paper, it is characterised in that the following steps are included:
A. melanin solution is prepared:
The aqueous slkali that pH is 10~14 is added in the reactor, melanin solution materials are added, 5~30min of stirring makes melanin
Solution materials are completely dissolved, and oxidant is then added, and are stirred to react at 0~70 DEG C 5~48 hours, in solution after the reaction by
Step is added after acid regulator adjusts pH to 8~12 and melanin solution is made；
B. sizing agent is prepared:
The resulting melanin solution of step A is added in sizing agent raw material, sizing agent is made after mixing evenly, the melanin is molten
The total sizing agent mass percent of liquid Zhan is 1%~20%；
C. sizing agent is coated:
Sizing agent obtained is spread evenly across to the tow sides of paper, eyeshield paper is made；Wherein,
The melanin solution materials are dopamine, Dopamine hydrochloride, 5,6- dihydroxy indole, 5-OHi, 6- hydroxyl Yin
Diindyl, 7- oxyindole, 5-OHi -3- acetic acid, catechol, 4- oxyindole, 3- methylhydroxy indoles, 7- hydroxyl Yin
One of diindyl -2- formic acid, 5-OHi -2- Ethyl formate, 5-OHi -3- ethyl alcohol, the fluoro- 5-OHi of 4- or
A variety of mixtures；
The sizing agent raw material is rosin, unmodified starch, modified starch, polyvinyl alcohol, alkyl ketene dimer, alkenyl succinate
One of acid anhydrides, hydroxymethyl cellulose or a variety of mixtures.
2. a kind of manufacturing process of eyeshield paper according to claim 1, it is characterised in that in step A, the aqueous slkali is
One of sodium hydroxide, potassium hydroxide, lithium hydroxide, ammonium hydroxide or a variety of mixtures.
3. a kind of manufacturing process of eyeshield paper according to claim 1, it is characterised in that in step A, the oxidant is
One of ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate, potassium bichromate, hydrogen peroxide or a variety of mixtures.
4. a kind of manufacturing process of eyeshield paper according to claim 1, it is characterised in that in step A, the acid adjusting
Agent is one of hydrochloric acid, sulfuric acid, phosphoric acid, acetic acid, oxalic acid, nitric acid or a variety of mixtures.
5. a kind of manufacturing process of eyeshield paper according to claim 1, it is characterised in that in step A, the melanin is molten
The mass ratio of liquid raw material and aqueous slkali is 1:(5~50), the mass ratio of the melanin solution materials and oxidant be 1:(0~
1), the mass ratio of the melanin raw material and acid regulator is 1:(0.001~10).
6. a kind of manufacturing process of eyeshield paper according to claim 1, it is characterised in that the blue light that the eyeshield paper absorbs
Wavelength is 400~500nm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910628020.6A CN110512463A (en) | 2019-07-12 | 2019-07-12 | A kind of manufacturing process of eyeshield paper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910628020.6A CN110512463A (en) | 2019-07-12 | 2019-07-12 | A kind of manufacturing process of eyeshield paper |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666671A (en) * | 2009-10-23 | 2012-09-12 | 首尔大学校产学协力团 | Nano-sized melanin particles and method of producing same |
| CN106868927A (en) * | 2017-01-24 | 2017-06-20 | 杭州科翼科技有限公司 | A kind of environment protecting paper of protection eyesight |
| CN107298873A (en) * | 2016-04-15 | 2017-10-27 | 江南大学 | A kind of preparation method of melanin |
| CN107447587A (en) * | 2017-09-11 | 2017-12-08 | 中冶美利云产业投资股份有限公司 | A kind of production method of high bulk myopia prevention paper |
| CN109528511A (en) * | 2019-01-17 | 2019-03-29 | 四川大学 | A kind of compound hair dye of artificial melanin and its application method |
-
2019
- 2019-07-12 CN CN201910628020.6A patent/CN110512463A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666671A (en) * | 2009-10-23 | 2012-09-12 | 首尔大学校产学协力团 | Nano-sized melanin particles and method of producing same |
| CN107298873A (en) * | 2016-04-15 | 2017-10-27 | 江南大学 | A kind of preparation method of melanin |
| CN106868927A (en) * | 2017-01-24 | 2017-06-20 | 杭州科翼科技有限公司 | A kind of environment protecting paper of protection eyesight |
| CN107447587A (en) * | 2017-09-11 | 2017-12-08 | 中冶美利云产业投资股份有限公司 | A kind of production method of high bulk myopia prevention paper |
| CN109528511A (en) * | 2019-01-17 | 2019-03-29 | 四川大学 | A kind of compound hair dye of artificial melanin and its application method |
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Application publication date: 20191129 |