CN107278728A - A kind of fruit cultivating bag paper and preparation method thereof - Google Patents
A kind of fruit cultivating bag paper and preparation method thereof Download PDFInfo
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- CN107278728A CN107278728A CN201710510150.0A CN201710510150A CN107278728A CN 107278728 A CN107278728 A CN 107278728A CN 201710510150 A CN201710510150 A CN 201710510150A CN 107278728 A CN107278728 A CN 107278728A
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- bamboo fibre
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- cultivating bag
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0237—Devices for protecting a specific part of a plant, e.g. roots, trunk or fruits
-
- 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
-
- 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
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Paper (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention relates to a kind of fruit cultivating bag paper and preparation method thereof, belong to paper-making technology field.Bamboo is split into thin bamboo strips used for weaving by the present invention, thin bamboo strips used for weaving is rolled and soaks softening after being mixed after flattening with sodium hydroxide solution, after the thin bamboo strips used for weaving after softening is taken out again, drained, rolling, obtain bamboo fibre, taken out after bamboo fibre and liquor natrii hypochloritis are mixed, obtain bleaching bamboo fibre, bleaching bamboo fibre and biogas slurry are subjected to mixed fermentation, tunning is sterilized, filter, wash, air-dried, obtains pre-processing bamboo fibre；With 2 after pretreatment bamboo fibre is crushed, 4 toluene di-isocyanate(TDI)s are filtered after being reacted, obtain being modified bamboo fibre, after sericite and calcium carbonate are crushed, sieved again emulsion is mixed to get with water, silane coupler, then paraffin, OPE etc. are mixed to get water repellent agent, dried after being finally beaten modified bamboo fibre, emulsion, water repellent agent etc..Fruit cultivating bag paper water suction numerical value prepared by the present invention is low, with preferable water repelling property.
Description
Technical field
The present invention relates to a kind of fruit cultivating bag paper and preparation method thereof, belong to paper-making technology field.
Background technology
With the improvement of people ' s living standards with the enhancing of environmental consciousness, the demand to fruit is continuously increased, to its matter
Amount it is also proposed higher requirement, and natural free of contamination green fruit is becoming increasingly popular.Fruit cultivating bag paper is to improve fruit
Product quality, increase its economic value, a kind of agricultural technology paper used during fruit growing.Use fruit bag
Paper, can improve the degree of staining of fruit；The cleanliness factor of fruit can be improved, the residual of agricultural chemicals and the pollution of dust is reduced, it is ensured that
Health；The integrity degree of fruit is improved, pest and disease damage etc. is reduced.Due in fruit growing season, by wind, Exposure to Sunlight and drench with rain
The influence of weather conditions change, it is desirable to which fruit cultivating bag paper has long-term water repelling property, to prevent what is either caused through drenching with rain by dew
Paper bag is crushed；Fruit cultivating bag paper should also have high gas permeability simultaneously, it is ensured that fruit is normally carried out photosynthesis and respiration, with
Carry out normal metabolism.
At present, the manufacturing main processes of fruit cultivating bag paper are：Select fibrous raw material first, including long fibre and short
Fiber, is matched according to the requirement of intensity, pliability and air permeability；The suitable mashing technology proof strength of selection and air permeability, mesh
Preceding main flow is half shiny beating technique；According to the appropriate bleaching process of shading Sexual behavior mode, opacity requirement is met；Add into slurry
Plus appropriate wet strength agent and sizing agent, it is ensured that the anti-liquid penetration and wet strength of paper；Manufacture paper with pulp into paper web；Then according to difference
It is required that selection coating press polish and coloring process, obtain satisfactory fruit cultivating bag paper and for further reducing and using.However,
Existing fruit cultivating bag paper water suction numerical value is high, and water repelling property is poor, is easily caused fruit and the phenomenon such as blackspot occurs, rot, have impact on
The quality of fruit.
It would therefore be highly desirable to it is low to find a kind of water suction numerical value, the fruit cultivating bag paper with preferable water repelling property.
The content of the invention
The technical problems to be solved by the invention：High for existing fruit cultivating bag paper water suction numerical value, water repelling property is poor, easily
Cause fruit occur blackspot, rot etc. phenomenon the problem of there is provided a kind of fruit cultivating bag paper and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of fruit cultivating bag paper, it is characterised in that include the raw material of following parts by weight：
50~60 parts of modified bamboo fibres, 10~15 parts of gum rosins, 3~5 parts of emulsion, 1~3 portion of soluble starch and 8~12 parts
Water repellent agent；
The preparation process of described modification bamboo fibre is：
（1）Bamboo is split into thin bamboo strips used for weaving, 1~2kg thin bamboo strips used for weavings are rolled after flattening, is 25% sodium hydroxide solution with 3~4L mass fractions
3~4h of immersion softening after mixing, then after the thin bamboo strips used for weaving after softening taken out, is drained, roll, obtain bamboo fibre；
（2）It is that 5% liquor natrii hypochloritis mixes 30~40min by bamboo fibre and 2~3L mass fractions, bamboo fibre is taken out, obtained
Bamboo fibre is bleached, will be after bleaching bamboo fibre and 2~3L biogas slurries mix, sealing and fermenting, will after 5~8 days under the conditions of 30~40 DEG C
Tunning high-temperature sterilization, filtering, washing, air-dry, obtain pre-process bamboo fibre；
（3）With 1~2L water, 300~400g2 after pretreatment bamboo fibre is crushed, 4- toluene di-isocyanate(TDI)s, mixing 10~
After 15min, 0.3~0.5g initiators are added, and filtering after 60~90min is reacted at 80~90 DEG C, modified bamboo are obtained fine
Dimension；
Described emulsion be crushed by 100~200g sericites and 200~300g calcium carbonate, after sieving with 500~600mL water
It is mixed to get with 5~8g silane couplers；
Described water repellent agent is received by 100~200g paraffin, 30~40g OPEs, 3~5g Tween-80s, 20~30g
Rice silica, 3~5g dimethyl silicone polymers and 300~400mL mass fractions are that 15% sodium hydroxide solution is mixed to get
's.
Described silane coupler is one or both of silane resin acceptor kh-550, silane coupler KH-560.
Described initiator is the one or more in benzoyl peroxide, potassium peroxydisulfate, azodiisobutyronitrile.
A kind of preparation method of fruit cultivating bag paper, specific preparation process is：Will modified bamboo fibre, gum rosin, emulsion, solvable
Property starch and water repellent agent be beaten, obtain slurry, with pH adjusting agent regulation pH be to copy paper is made after 7.5~7.8 by slurry, obtain
To forming paper, forming paper is dried, fruit cultivating bag paper is produced.
Conditioning agent is that mass fraction is 5% hydrochloric acid.
Described paper basis weight is 50~80g/m2。
The present invention is compared with other method, and advantageous effects are：
（1）Bamboo fibre microbiological treatment can be exposed the active group in bamboo fibre by the present invention, then with 2,4- toluene
The hydroxyl of diisocyanate and bamboo fibre is reacted, and reduces the hydroxyl in bamboo fibre, while adding the hydrophobic of bamboo fibre
Ester group, strengthens bamboo fibre water proofing property, then sericite and calcium carbonate are handled with silane coupler, can improve dredging for filler
It is aqueous, and then improve the water proofing property of fruit cultivating bag paper；
（2）The present invention adds the nano silicon with hydrophobic function when preparing water repellent agent, then with being modified bamboo fibre etc.
Mixing mashing, be made after forming paper, water repellent agent can forming paper surface formed one layer of stable organic-inorganic thin film, make water without
Method is directly contacted with the surface of paper, so that forming paper surface shows hydrophobicity.
Embodiment
Bamboo is split into thin bamboo strips used for weaving with knife, 1~2kg thin bamboo strips used for weavings are placed in flattening machine roll flattening after be transferred to softening pond in,
And it is 25% sodium hydroxide solution that 3~4L mass fractions are added into softening pond, 3~4h is soaked, then the thin bamboo strips used for weaving after softening is taken out
And drain naturally, the thin bamboo strips used for weaving drained is placed in after being rolled in rolling roller, bamboo fibre is obtained, by bamboo fibre and 2~3L mass
Fraction is that 5% liquor natrii hypochloritis is mixed after 30~40min, and bamboo fibre is taken out, and obtains bleaching bamboo fibre, will bleach bamboo fibre
It is added in fermentation tank, sealing and fermenting 5~8 days under the conditions of 30~40 DEG C, after fermentation ends, fermentation is produced with 2~3L biogas slurries
Thing is placed in high-temperature sterilization box, 15~20min of high-temperature sterilization at 125~135 DEG C, obtains the material that sterilizes, by the material mistake that sterilizes
Filter, obtains filter residue, after filter residue is rinsed 3~5 times with water, natural air drying, obtains pre-processing bamboo fibre, and pretreatment bamboo fibre is put
It is transferred to after crushing 30~40min in pulverizer in beaker, beaker is moved into water-bath, it is 80~90 to control bath temperature
DEG C, then added into beaker after 1~2L water, 300~400g2,4- toluene di-isocyanate(TDI)s, 10~15min of stirring mixing, then add
Enter 0.3~0.5g initiators, 60~90min of stirring reaction, reaction is filtered after terminating, and is obtained filter cake, that is, is modified bamboo fibre, weighs
100~200g sericites, 200~300g calcium carbonate, which are added in pulverizer, crosses 80~100 mesh sieves after crushing, obtain mixed powder
End, is added to 15~20min of stirring mixing in beaker by mixed-powder, 500~600mL water and 5~8g silane couplers, obtains
Emulsion, then by 100~200g paraffin, 30~40g OPEs, 3~5g Tween-80s, 20~30g nanometer titanium dioxides
Silicon, 3~5g dimethyl silicone polymers and 300~400mL mass fractions are that 15% sodium hydroxide solution is added in beaker, are stirred
Mix 20~30min, obtain water repellent agent, count by weight, take 50~60 parts of modified bamboo fibres, 10~15 parts of gum rosins, 3~
5 parts of emulsion, 1~3 portion of soluble starch and 8~12 parts of water repellent agents are added to hydrabrusher and carry out 15~20min of pulping, obtain
To slurry, slurry is placed in the copying in extracting container of paper machine, it is to copy the type of being made after 7.5~7.8 that slurry pH is adjusted with pH adjusting agent,
It is 50~80g/m to control paper basis weight2, obtain forming paper, forming paper be placed in baking oven, 95~105 DEG C dry 15~
20min, you can obtain fruit cultivating bag paper.Described initiator is one in benzoyl peroxide, potassium peroxydisulfate, azodiisobutyronitrile
Plant or several.Described silane coupler is one or both of silane resin acceptor kh-550, silane coupler KH-560.Institute
The pH adjusting agent stated is that mass fraction is 5% hydrochloric acid.
Example 1
Bamboo is split into thin bamboo strips used for weaving with knife, 2kg thin bamboo strips used for weavings are placed in flattening machine to roll is transferred to after flattening in softening pond, and to softening
It is 25% sodium hydroxide solution that 4L mass fractions are added in pond, soaks 4h, then the thin bamboo strips used for weaving after softening is taken out and drained naturally, will
The thin bamboo strips used for weaving drained is placed in rolled in rolling roller after, obtain bamboo fibre, be 5% sodium hypochlorite by bamboo fibre and 3L mass fractions
After solution mixing 40min, bamboo fibre is taken out, obtains bleaching bamboo fibre, bleaching bamboo fibre and 3L biogas slurries is added to fermentation tank
In, after fermentation ends, tunning is placed in high-temperature sterilization box for sealing and fermenting 8 days under the conditions of 40 DEG C, high at 135 DEG C
Temperature sterilizing 20min, obtains the material that sterilizes, by the material filtering that sterilizes, obtains filter residue, after filter residue is rinsed 5 times with water, natural wind
It is dry, obtain pre-processing bamboo fibre, pretreatment bamboo fibre is placed in after crushing 40min in pulverizer and be placed in beaker, beaker is put
In water-bath, it is 90 DEG C to control bath temperature, then addition 2L water, 400g2 into beaker, 4- toluene di-isocyanate(TDI)s, stirring
Mix after 15min, add 0.5g benzoyl peroxides, stirring reaction 90min, reaction is filtered after terminating, obtains filter cake, that is, change
Property bamboo fibre, weigh 200g sericites, 300g calcium carbonate be added in pulverizer crush after cross 100 mesh sieves, obtain mixed-powder,
Mixed-powder, 600mL water and 8g silane resin acceptor kh-550s are added to stirring mixing 20min in beaker, emulsion is obtained, then
200g paraffin, 40g OPEs, 5g Tween-80s, 30g nano silicons, 5g dimethyl silicone polymers and 400mL matter
Amount fraction is that 15% sodium hydroxide solution is added in beaker, stirring mixing 30min, obtains water repellent agent, counts by weight, takes
60 parts of modified bamboo fibres, 15 parts of gum rosins, 5 parts of emulsion, 1 portion of soluble starch and 12 parts of water repellent agents are added to hydrabrusher
Pulping 20min is carried out, slurry is obtained, slurry is placed in the copying in extracting container of paper machine, is that 5% hydrochloric acid is adjusted and starched with mass fraction
It is copy paper shaping after 7.8 to expect pH, and it is 80g/m to control paper basis weight2, forming paper is obtained, forming paper is placed in baking oven, 105
DEG C dry 15min, you can obtain fruit cultivating bag paper.
Example 2
Bamboo is split into thin bamboo strips used for weaving with knife, 1kg thin bamboo strips used for weavings are placed in flattening machine to roll is transferred to after flattening in softening pond, and to softening
It is 25% sodium hydroxide solution that 3L mass fractions are added in pond, soaks 3h, then the thin bamboo strips used for weaving after softening is taken out and drained naturally, will
The thin bamboo strips used for weaving drained is placed in rolled in rolling roller after, obtain bamboo fibre, be 5% sodium hypochlorite by bamboo fibre and 2L mass fractions
After solution mixing 30min, bamboo fibre is taken out, obtains bleaching bamboo fibre, bleaching bamboo fibre and 2L biogas slurries is added to fermentation tank
In, after fermentation ends, tunning is placed in high-temperature sterilization box for sealing and fermenting 5 days under the conditions of 30 DEG C, high at 125 DEG C
Temperature sterilizing 15min, obtains the material that sterilizes, by the material filtering that sterilizes, obtains filter residue, after filter residue is rinsed 3 times with water, natural wind
It is dry, obtain pre-processing bamboo fibre, pretreatment bamboo fibre is placed in after crushing 30min in pulverizer and be placed in beaker, beaker is put
In water-bath, it is 80 DEG C to control bath temperature, then addition 1L water, 300g2 into beaker, 4- toluene di-isocyanate(TDI)s, stirring
Mix after 10min, add 0.3g potassium peroxydisulfates, stirring reaction 60min, reaction is filtered after terminating, and obtains filter cake, i.e. modified bamboo
Fiber, weighs 100g sericites, 200g calcium carbonate and is added in pulverizer 80 mesh sieves excessively after crushing, obtain mixed-powder, will be mixed
Close powder, 500mL water and 5g silane couplers KH-560 and be added to stirring mixing 15min in beaker, obtain emulsion, then will
100g paraffin, 30g OPEs, 3g Tween-80s, 20g nano silicons, 3g dimethyl silicone polymers and 300mL matter
Amount fraction is that 15% sodium hydroxide solution is added in beaker, stirring mixing 20min, obtains water repellent agent, counts by weight, takes
50 parts of modified bamboo fibres, 10 parts of gum rosins, 3 parts of emulsion, 1 portion of soluble starch and 8 parts of water repellent agents are added to hydrabrusher
Pulping 15min is carried out, slurry is obtained, slurry is placed in the copying in extracting container of paper machine, is that 5% hydrochloric acid is adjusted and starched with mass fraction
It is copy paper shaping after 7.5 to expect pH, and it is 50g/m to control paper basis weight2, forming paper is obtained, forming paper is placed in baking oven, at 95 DEG C
Dry 15min, you can obtain fruit cultivating bag paper.
Example 3
Bamboo is split into thin bamboo strips used for weaving with knife, 1kg thin bamboo strips used for weavings are placed in flattening machine to roll is transferred to after flattening in softening pond, and to softening
It is 25% sodium hydroxide solution that 3L mass fractions are added in pond, soaks 3h, then the thin bamboo strips used for weaving after softening is taken out and drained naturally, will
The thin bamboo strips used for weaving drained is placed in rolled in rolling roller after, obtain bamboo fibre, be 5% sodium hypochlorite by bamboo fibre and 2L mass fractions
After solution mixing 35min, bamboo fibre is taken out, obtains bleaching bamboo fibre, bleaching bamboo fibre and 3L biogas slurries is added to fermentation tank
In, after fermentation ends, tunning is placed in high-temperature sterilization box for sealing and fermenting 7 days under the conditions of 35 DEG C, high at 130 DEG C
Temperature sterilizing 17min, obtains the material that sterilizes, by the material filtering that sterilizes, obtains filter residue, after filter residue is rinsed 4 times with water, natural wind
It is dry, obtain pre-processing bamboo fibre, pretreatment bamboo fibre is placed in after crushing 35min in pulverizer and be placed in beaker, beaker is put
In water-bath, it is 85 DEG C to control bath temperature, then addition 2L water, 350g2 into beaker, 4- toluene di-isocyanate(TDI)s, stirring
Mix after 12min, add 0.4g azodiisobutyronitriles, stirring reaction 80min, reaction is filtered after terminating, obtains filter cake, that is, change
Property bamboo fibre, weigh 150g sericites, 250g calcium carbonate be added in pulverizer crush after cross 90 mesh sieves, obtain mixed-powder,
Mixed-powder, 550mL water and 7g silane resin acceptor kh-550s are added to stirring mixing 17min in beaker, emulsion is obtained, then
By 150g paraffin, 35g OPEs, 4g Tween-80s, 25g nano silicons, 4g dimethyl silicone polymers and 350mL
Mass fraction is that 15% sodium hydroxide solution is added in beaker, stirring mixing 25min, obtains water repellent agent, counts by weight,
55 parts of modified bamboo fibres, 12 parts of gum rosins, 4 parts of emulsion, 2 portions of soluble starches and 10 parts of water repellent agents are taken to be added to hydraulic pulping
Machine carries out pulping 17min, obtains slurry, and slurry is placed in into the copying in extracting container of paper machine, is the regulation of 5% hydrochloric acid with mass fraction
Slurry pH is copy paper shaping after 7.7, and it is 70g/m to control paper basis weight2, forming paper is obtained, forming paper is placed in baking oven,
100 DEG C of dry 17min, you can obtain fruit cultivating bag paper.
Reference examples：The fruit cultivating bag paper of Co., Ltd of Changyue County production.
The fruit cultivating bag paper of example 1~3 and reference examples is detected, its testing result and test method such as table 1.
Table 1
As shown in Table 1, the fruit cultivating bag paper water absorbent surface numerical value that prepared by the present invention is low, with excellent water repelling property, while its is saturating
The performances such as manner, opacity are better than the fruit cultivating bag paper of reference examples.
Claims (6)
1. a kind of fruit cultivating bag paper, it is characterised in that include the raw material of following parts by weight：
50~60 parts of modified bamboo fibres, 10~15 parts of gum rosins, 3~5 parts of emulsion, 1~3 portion of soluble starch and 8~12 parts
Water repellent agent；
The preparation process of described modification bamboo fibre is：
（1）Bamboo is split into thin bamboo strips used for weaving, 1~2kg thin bamboo strips used for weavings are rolled after flattening, is 25% sodium hydroxide solution with 3~4L mass fractions
3~4h of immersion softening after mixing, then after the thin bamboo strips used for weaving after softening taken out, is drained, roll, obtain bamboo fibre；
（2）It is that 5% liquor natrii hypochloritis mixes 30~40min by bamboo fibre and 2~3L mass fractions, bamboo fibre is taken out, obtained
Bamboo fibre is bleached, will be after bleaching bamboo fibre and 2~3L biogas slurries mix, sealing and fermenting, will after 5~8 days under the conditions of 30~40 DEG C
Tunning high-temperature sterilization, filtering, washing, air-dry, obtain pre-process bamboo fibre；
（3）With 1~2L water, 300~400g2 after pretreatment bamboo fibre is crushed, 4- toluene di-isocyanate(TDI)s, mixing 10~
After 15min, 0.3~0.5g initiators are added, and filtering after 60~90min is reacted at 80~90 DEG C, modified bamboo are obtained fine
Dimension；
Described emulsion be crushed by 100~200g sericites and 200~300g calcium carbonate, after sieving with 500~600mL water
It is mixed to get with 5~8g silane couplers；
Described water repellent agent is received by 100~200g paraffin, 30~40g OPEs, 3~5g Tween-80s, 20~30g
Rice silica, 3~5g dimethyl silicone polymers and 300~400mL mass fractions are that 15% sodium hydroxide solution is mixed to get
's.
2. one kind according to claim 1 educates fruit paper bag, it is characterised in that described silane coupler is silane coupled
One or both of agent KH-550, silane coupler KH-560.
3. a kind of fruit cultivating bag paper according to claim 1, it is characterised in that described initiator is benzoyl peroxide first
One or more in acyl, potassium peroxydisulfate, azodiisobutyronitrile.
4. the preparation method of a kind of fruit cultivating bag paper described in claims 1 to 3, it is characterised in that specifically preparation process is：Will
Modified bamboo fibre, gum rosin, emulsion, soluble starch and water repellent agent are beaten, and slurry are obtained, by slurry pH adjusting agent
Regulation pH is to copy paper is made after 7.5~7.8, obtains forming paper, forming paper is dried, produce fruit cultivating bag paper.
5. a kind of preparation method of fruit cultivating bag paper according to claim 4, it is characterised in that described pH adjusting agent is
Mass fraction is 5% hydrochloric acid.
6. a kind of preparation method of fruit cultivating bag paper according to claim 4, it is characterised in that described paper basis weight is
50~80g/m2。
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| CN110578266A (en) * | 2019-09-04 | 2019-12-17 | 泰中特种纸有限公司 | Special paper with low hygroexpansivity and high recovery and preparation method thereof |
| CN111136748A (en) * | 2020-01-10 | 2020-05-12 | 台州学院 | Wood fiber manufacturing method |
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| CN110578266A (en) * | 2019-09-04 | 2019-12-17 | 泰中特种纸有限公司 | Special paper with low hygroexpansivity and high recovery and preparation method thereof |
| CN111136748A (en) * | 2020-01-10 | 2020-05-12 | 台州学院 | Wood fiber manufacturing method |
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