CN106245412B - A kind of preparation method of multilayer handsheet - Google Patents
A kind of preparation method of multilayer handsheet Download PDFInfo
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- CN106245412B CN106245412B CN201610772932.7A CN201610772932A CN106245412B CN 106245412 B CN106245412 B CN 106245412B CN 201610772932 A CN201610772932 A CN 201610772932A CN 106245412 B CN106245412 B CN 106245412B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
- D21F13/02—Making hand-made paper
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Abstract
A kind of preparation method of multilayer handsheet, comprises the following steps：(1) obtained slurry is obtained into paper pulp by sheet forming apparatus；(2) paper pulp is precipitated in sheet forming apparatus, copies and take out wet thin paper page；(3) it is placed on using cotton on wet thin paper page, moisture removal is removed in roll-in, tears off the thin paper page after dehydration；(4) after repeat step (1)~(3) obtain the tissue sheet of predetermined quantity, it is sequentially overlapped, and in one tissue sheet of every superposition, sprays high temperature resistant reinforcing agent；(5) it is put into hot press, first presses moisture removal to be thermally dried again, obtains multilayer handsheet；Preparation method proposed by the present invention effectively reduces the difficulty being subsequently superimposed and broken breaks the probability of paper；Improve the performance of bonding dynamics between every layer of tissue sheet, high temperature resistant and intensity；Optimize the diversity of multilayer handsheet performance, the experiment scope of application is wider, and manipulation is easy, the uniform quality of multilayer handsheet, smooth densification, and cost is low and presses efficiency high.
Description
Technical field
The present invention relates to field of papermaking handsheet technical field, more particularly to a kind of preparation method of multilayer handsheet.
Background technology
Currently in order to research on paper performance is carried out to the cardboard after compound in the lab, it is necessary to prepare multilayer write by hand
Piece is carried out to its performance study, and in view of the limitation on time and equipment cost, then it is not suitable for using industrial big
Equipment, but due to being limited in the quality and performance by the multilayer handsheet prepared, and cause the reference for influenceing test result
Value.The current existing preparation technology for multilayer handsheet, it is a kind of real as disclosed in Patent No. 200910098387.8
The preparation method for testing room multilayer handsheet, it is to be superimposed one by being overlapped after being squeezed to individual wet sheet, and every
Need to carry out cross lamination in length and breadth during layer to roll, finally again squeezed the handsheet after superposition, but still there is deficiency,
, often can be while overlapping to multiple because of in multiple thin paper pages of superposition often during being prepared to multilayer handsheet
Thin paper page carries out roll-in, occurs deforming or slight crack because repeatedly roll-in causes the undue dehydration of the thin paper page of bottom, because
This, which exists, is difficult to control the stability that paper ensures moisture in compound tense, and the adhesion between ply of paper is unstable, and quality is uneven,
Easily there is broken paper, split paper, manipulate the problem of difficult.
The content of the invention
It is an object of the invention to propose the preparation method of multilayer handsheet a kind of simple to operate and low breakage rate, it is made
The multilayer handsheet obtained has the features such as heat endurance is high, smooth fine and close, bonding dynamics is strong and experimental study is applied widely.
To use following technical scheme up to this purpose, the present invention：
A kind of preparation method of multilayer handsheet, comprises the following steps：
(1) paper pulp prepares：Fibre stuff, sizing agent, wet strength agent, drying strengthening agent, emulsion, dyestuff and water are added in fiberizer
Slurry is made in polishing, then to the pulp dilution after polishing, stirring and crosses net drainage by sheet forming apparatus, obtains paper pulp；
(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page；
(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, moisture removal is removed in roll-in, is taken off from the cotton
Take the thin paper page after dehydration；
(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped, and in every superposition one
When opening thin paper page, in its surface spraying high temperature resistant reinforcing agent；
(5) squeeze：The thin paper page of superposition is put into hot press, moisture removal is first pressed by heating platen, then is thermally dried,
Wherein control pressure is 413.7kPa, squeezes 8~10min of time, and heating-up temperature is 160~200 DEG C, obtains multilayer handsheet.
Further illustrate, the grammes per square metre that the wet thin paper page of taking-up is copied described in step (2) is 10~15g/cm2, thickness 0.6
~1.2mm, tightness are 0.4~0.6g/cm3, water content is 75~80%.
Further illustrate, the high temperature resistant reinforcing agent in step (4) is oxidized starch and poly-vinyl alcohol solution.
Further illustrate, the sizing agent is AKD sizing agents, and the wet strength agent is TH-P50, and the emulsion is butadiene-styrene rubber
Breast or acrylate latex, the drying strengthening agent are polyacrylamide or glyoxal polyacrylamide.
Further illustrate, every quantification of 5g/cm of thin paper page over dry in the multilayer handsheet that step (5) obtains2。
Further illustrate, the thickness for the multilayer handsheet that step (5) obtains be 1.5~2.5mm, tightness for 1.2~
1.3g/cm3。
Further illustrate, the surface temperature for the multilayer handsheet that step (5) obtains is 24~25 DEG C.
Beneficial effects of the present invention：(1) individual thin paper is being dehydrated while realize preliminary rolling effect, led to
Cross the roll-in of cotton interval to be dehydrated, on the basis of the water content and flatness that effectively control every thin paper page, ensure every thin paper
The integrity degree of page, reduces the difficulty being subsequently superimposed and broken breaks the probability of paper, and the stability of thin paper page is higher, the effect of superposition
More preferably, processing step is simpler.
(2) high temperature resistant reinforcing agent is sprayed in paper during thin paper page superposition is carried out, can not only improved every layer thin
Bonding dynamics between page, and ensure the strength character of each layer of thin paper page, resistance to thermal dimensional stability, improve thin paper page
High temperature resistant and intensity performance；The reinforcing agent for spraying other functions can also be increased on this basis, so as to optimize multilayer hand
The diversity of paper's capability, is advantageous to the preparation of the multilayer handsheet to multifunctionality in the lab, and experimental study is applicable model
Enclose more extensively, various physical property measurements can be carried out.
(3) heating platen pressure moisture removal is first passed through, is finally thermally dried bonding again, when ensure that the bonding of multi-layer thin page
The stabilization of moisture, smooth densification, strength character is stable, manipulates easier, the uniform quality of the multilayer handsheet of acquisition, cost
Low and pressing efficiency high, multilayer handsheet produced by the present invention can operate with many experimental studies.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the preparation method of multilayer handsheet of one embodiment of the invention；
Wherein：Sheet forming apparatus 1, roller 2, hot press 3, heating platen 31, thin paper page 4, multilayer handsheet 5.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
A kind of preparation method of multilayer handsheet, comprises the following steps：
(1) paper pulp prepares：Fibre stuff, sizing agent, wet strength agent, drying strengthening agent, emulsion, dyestuff and water are added in fiberizer
Slurry is made in polishing, then to the pulp dilution after polishing, stirring and crosses net drainage by sheet forming apparatus, obtains paper pulp；
(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page；
(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, moisture removal is removed in roll-in, is taken off from the cotton
Take the thin paper page after dehydration；
(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped, and in every superposition one
When opening thin paper page, in its surface spraying high temperature resistant reinforcing agent；
(5) squeeze：The thin paper page of superposition is put into hot press, moisture removal is first pressed by heating platen, then is thermally dried,
Wherein control pressure is 413.7kPa, squeezes 8~10min of time, and heating-up temperature is 160~200 DEG C, obtains multilayer handsheet.
A kind of preparation method of multilayer handsheet proposed by the present invention, the wet thin paper beginning of the page that taking-up is copied at individual are first carried out
After covering roll-in dehydration, and the high temperature resistant reinforcing agent is sprayed further to improve during each thin paper page superposition is carried out
Bonding strength between each thin paper page, makes multi-layer thin page fully bond, the multilayer write by hand of acquisition finally by high temperature hot pressing
Piece.It has the characteristics that：
(1) individual thin paper is being dehydrated while realize preliminary rolling effect, taken off by the roll-in of cotton interval
Water, the dehydrating amount of thin paper page is not only effectively controlled, and the destruction of machinery will not be produced to wet thin paper page；Compared to it is existing simultaneously
The rolling methods of the thin paper page overlapping to multiple, avoid in multiple thin paper pages of superposition, under repeatedly roll-in causes
The undue dehydration of the thin paper page in portion and occur deforming or slight crack, therefore effectively control the water content and flatness of every thin paper page
On the basis of, ensure the integrity degree of every thin paper page, reduce the difficulty being subsequently superimposed and broken breaks the probability of paper, thin paper page
Stability is higher, and the effect of superposition is more preferable, and processing step is simpler.
(2) high temperature resistant reinforcing agent is sprayed in paper during thin paper page superposition is carried out, can not only improved every layer thin
Bonding dynamics between page, and ensure the strength character of each layer of thin paper page, resistance to thermal dimensional stability, avoid follow-up
HTHP squeezing when damage to paper, improve the high temperature resistant of thin paper page and the performance of intensity；Furthermore it is also possible to herein
On the basis of increase spray other functions reinforcing agent, so as to optimize the diversity of multilayer handsheet performance, be advantageous in laboratory
In to multifunctionality multilayer handsheet preparation, the experimental study scope of application is wider, can carry out various physical property measurements.
(3) because the moisture of the thin paper page in spray high temperature resistant reinforcing agent will increase, therefore in the process squeezed
In, heating platen pressure moisture removal is first passed through, is finally thermally dried bonding again, moisture is steady when ensure that the bonding of multi-layer thin page
Fixed, smooth densification, strength character is stable, manipulates easier, the uniform quality of the multilayer handsheet of acquisition, cost is low and presses
Efficiency high.
Multilayer handsheet produced by the present invention can operate with many experimental studies, A：It is right that fiber prescription difference can be studied
The influence of the physical property of multilayer handsheet, such as：(1) the U.S. useless formulas of 100%13# and 100% domestic occ waste paper formula are physical
The difference of energy；(2) U.S. useless+5% domestic occ of 50%13# and independent two formulas difference；(3) the wood pulp Canada of different proportion
Interior occ or import occ difference；(4) effect for adding other functional fibers can also be studied；B：Addition can be studied not assimilate
Influence of the product to the physical property of multilayer handsheet, such as：(1) influence change of the different emulsions to multilayer handsheet is added
Research；(2) comparative study of different wet strength agents is added；(3) comparative study of different drying strengthening agents is added；(4) different shallow lakes are added
The comparative study of powder；(5) comparative study of different dyes etc. is added.
Further illustrate, the grammes per square metre that the wet thin paper page of taking-up is copied described in step (2) is 10~15g/cm2, thickness 0.6
~1.2mm, tightness are 0.4~0.6g/cm3, water content is 75~80%.Gram of the wet thin paper page of taking-up is copied described in control
Weight, thickness, tightness and water content, it is to ensure when carrying out covering roll-in in the later stage, effectively thin paper page can be carried out smooth
Flatten and be dehydrated, therefore the value range of above-mentioned thin paper page parameter can make thin paper page to obtain matter in the case where bearing certain roller pressure
The impartial and stable thin paper page of amount, avoid paper excessively thin or overdrying and cause damaged and material waste, improve yield rate and excellent
Matter rate, raw material and the energy are saved, reduces cost.
Further illustrate, the high temperature resistant reinforcing agent in step (4) is oxidized starch and poly-vinyl alcohol solution.The oxygen
Changing starch has higher heat endurance, and polyvinyl alcohol then has unique strong adherence, protecting colloid, gas barrier performance
And wearability, therefore by covering a certain amount of oxidized starch and polyvinyl alcohol in the surface spraying of thin paper page, so as to strengthen
Inter-layer bonding force and heat resistance between thin paper page.
Further illustrate, the sizing agent is AKD sizing agents, and the wet strength agent is TH-P50, and the emulsion is butadiene-styrene rubber
Breast or acrylate latex, the drying strengthening agent are polyacrylamide or glyoxal polyacrylamide.During slurry is prepared
Improve the performance of thin paper page by adding chemical assistant, the water-resistance of paper can be improved by the AKD sizing agents, it is described wet
Strong agent is that TH-P50 has obvious retention, filtrating aid function in slurry paper-making process, and improves the folding strength and table of paper
Surface intensity, the drying strengthening agent polyacrylamide or glyoxal polyacrylamide can make the fiber in slurry be more evenly distributed, so as to
Improve the intensity of paper.
Further illustrate, every quantification of 5g/cm of thin paper page over dry in the multilayer handsheet that step (5) obtains2。
The superposition of the thin paper page of varying number is carried out according to the needs of the thickness of different handsheets, by controlling every thin paper page page
The quantification of 5g/cm of over dry2, ensure the uniformity of effective the bonding dynamics and quality of every layer of thin paper page, be easy to multilayer handsheet
Experimental study is carried out as experiment sample.
Further illustrate, the thickness for the multilayer handsheet that step (5) obtains be 1.5~2.5mm, tightness for 1.2~
1.3g/cm3.The multilayer handsheet of different-thickness can be needed according to different experimental studies, and is generally carrying out multi-layer thin page
Squeezing during, in the pressure and time for controlling certain squeezing, by improve the tightness of multilayer handsheet as 1.2~
1.3g/cm3, so as to ensure the overall adhesion strength of multilayer handsheet.
Further illustrate, the surface temperature for the multilayer handsheet that step (5) obtains is 24~25 DEG C.
As shown in figure 1, a kind of preparation methods of multilayer handsheet of embodiment 1-, comprise the following steps：
(1) paper pulp prepares：By fibre stuff, AKD sizing agents, TH-P50, polyacrylamide, styrene-butadiene latex, dyestuff and water
Add to polish in fiberizer and slurry is made, then the slurry after polishing is diluted by sheet forming apparatus 1, is sufficiently stirred and mistake
Net drainage, obtain paper pulp；
(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page, its
In copy that to take out the grammes per square metre of wet thin paper page be 10g/cm2, thickness 0.6mm, tightness 0.6g/cm3, water content 75%；
(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, carrying out roll-in to thin paper page using roller 2 goes
Moisture removal, the thin paper page 4 after dehydration is torn off from the cotton；
(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped；
(5) squeeze：The thin paper page 4 of superposition is put into hot press 3, moisture removal is first pressed by heating platen 31, then heated
Dry, wherein control pressure is 413.7kPa, squeezes time 8min, and heating-up temperature is 160 DEG C, obtains multilayer handsheet 5, wherein
The thickness of the multilayer handsheet is 1.5mm, tightness 1.3g/cm3, surface temperature is 25 DEG C, and every thin paper page over dry quantifies
For 5g/cm2.The test that 10 samples carry out physical property will be extracted by the multilayer copy paper piece made from the above method, such as
Following table：
A kind of preparation methods of multilayer handsheet of comparative example 1-, comprise the following steps：
(1) paper pulp prepares：By fibre stuff, AKD sizing agents, TH-P50, polyacrylamide, styrene-butadiene latex, dyestuff and water
Add to polish in fiberizer and slurry is made, then the slurry after polishing is diluted by sheet forming apparatus, is sufficiently stirred and mistake
Net drainage, obtain paper pulp；
(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page, its
In copy that to take out the grammes per square metre of wet thin paper page be 10g/cm2, thickness 0.6mm, tightness 0.6g/cm3, water content 75%；
(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, moisture removal is removed in roll-in, is taken off from the cotton
Take the thin paper page after dehydration；
(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped, and in every superposition
During one thin paper page, in its surface spraying oxidized starch and poly-vinyl alcohol solution；
(5) squeeze：The thin paper page of superposition is put into hot press, moisture removal is first pressed by heating platen, then is thermally dried,
Wherein control pressure is 413.7kPa, squeezes time 8min, and heating-up temperature is 160 DEG C, multilayer handsheet is obtained, wherein described more
The thickness of layer handsheet is 1.5mm, tightness 1.3g/cm3, surface temperature is 25 DEG C, every quantification of 5g/ of thin paper page over dry
cm2.The test that 10 samples carry out physical property, such as following table will be extracted by the multilayer copy paper piece made from the above method：
Contrasted by embodiment 1 and comparative example 1, be sequentially overlapped thin paper page in comparative example 1
During in its surface spraying high temperature resistant reinforcing agent so that the bond strength of the multilayer copy paper piece obtained after being squeezed
Significantly improve, flatness is more preferable, and consistency is high between ply of paper, and does not break the feelings of paper rate during roll-in and squeezing is carried out
Condition.
A kind of preparation methods of multilayer handsheet of embodiment 2-, comprise the following steps：
(1) paper pulp prepares：By fibre stuff, AKD sizing agents, TH-P50, polyacrylamide, styrene-butadiene latex, dyestuff and water
Add to polish in fiberizer and slurry is made, then the slurry after polishing is diluted by sheet forming apparatus, is sufficiently stirred and mistake
Net drainage, obtain paper pulp；
(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page, its
In copy that to take out the grammes per square metre of wet thin paper page be 15g/cm2, thickness 1.2mm, tightness 0.4g/cm3, water content 80%；
(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, moisture removal is removed in roll-in, is taken off from the cotton
Take the thin paper page after dehydration；
(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped, and in every superposition
During one thin paper page, in its surface spraying oxidized starch and poly-vinyl alcohol solution；
(5) squeeze：The thin paper page of superposition is put into hot press, moisture removal is first pressed by heating platen, then is thermally dried,
Wherein control pressure is 413.7kPa, squeezes time 10min, and heating-up temperature is 200 DEG C, multilayer handsheet is obtained, wherein described
The thickness of multilayer handsheet is 2.5mm, tightness 1.2g/cm3, surface temperature is 24 DEG C, every quantification of 5g/ of thin paper page over dry
cm2.The test that 10 samples carry out physical property, such as following table will be extracted by the multilayer copy paper piece made from the above method：
A kind of preparation methods of multilayer handsheet of embodiment 3--, comprise the following steps：
(1) paper pulp prepares：By fibre stuff, AKD sizing agents, TH-P50, glyoxal polyacrylamide, SGA
Breast, dyestuff and water, which add to polish in fiberizer, is made slurry, then the slurry after polishing is diluted by sheet forming apparatus, fills
Divide stirring and cross net drainage, obtain paper pulp；
(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page, its
In copy that to take out the grammes per square metre of wet thin paper page be 12.5g/cm2, thickness 0.9mm, tightness 0.5g/cm3, water content 77.5%；
(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, moisture removal is removed in roll-in, is taken off from the cotton
Take the thin paper page after dehydration；
(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped, and in every superposition
During one thin paper page, in its surface spraying oxidized starch and poly-vinyl alcohol solution；
(5) squeeze：The thin paper page of superposition is put into hot press, moisture removal is first pressed by heating platen, then is thermally dried,
Wherein control pressure is 413.7kPa, squeezes time 9min, and heating-up temperature is 180 DEG C, multilayer handsheet is obtained, wherein described more
The thickness of layer handsheet is 2.0mm, tightness 1.25g/cm3, surface temperature is 24.5 DEG C, and every thin paper page over dry is quantification of
5g/cm2.The test that 10 samples carry out physical property will be extracted by the multilayer copy paper piece made from the above method, it is as follows
Table：
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (4)
- A kind of 1. preparation method of multilayer handsheet, it is characterised in that：Comprise the following steps：(1) paper pulp prepares：Fibre stuff, sizing agent, wet strength agent, drying strengthening agent, emulsion, dyestuff and water are added in fiberizer and polished Slurry is made, then to the pulp dilution after polishing, stirring and net drainage is crossed by sheet forming apparatus, obtains paper pulp；(2) paper pulp precipitates：The paper pulp that step (1) obtains is precipitated in sheet forming apparatus, copies and takes out wet thin paper page；(3) roll-in is covered：It is placed on using cotton on the wet thin paper page, moisture removal is removed in roll-in, is torn off from the cotton de- Thin paper page after water；(4) it is laminated：After repeat step (1)~(3) obtain the thin paper page of predetermined quantity, it is sequentially overlapped, and it is one thin in every superposition During page, in its surface spraying high temperature resistant reinforcing agent；(5) squeeze：The thin paper page of superposition is put into hot press, moisture removal is first pressed by heating platen, then is thermally dried, wherein Control pressure is 413.7kPa, squeezes 8~10min of time, and heating-up temperature is 160~200 DEG C, obtains multilayer handsheet；The grammes per square metre that the wet thin paper page of taking-up is copied described in step (2) is 10~15g/cm2, thickness is 0.6~1.2mm, and tightness is 0.4~0.6g/cm3, water content is 75~80%；The high temperature resistant reinforcing agent in step (4) is oxidized starch and poly-vinyl alcohol solution；The sizing agent is AKD sizing agents, and the wet strength agent is TH-P50, and the emulsion is styrene-butadiene latex or SGA Breast, the drying strengthening agent are polyacrylamide or glyoxal polyacrylamide.
- A kind of 2. preparation method of multilayer handsheet according to claim 1, it is characterised in that：The institute that step (5) obtains State every quantification of 5g/cm of thin paper page over dry in multilayer handsheet2。
- A kind of 3. preparation method of multilayer handsheet according to claim 1, it is characterised in that：The institute that step (5) obtains The thickness for stating multilayer handsheet is 1.5~2.5mm, and tightness is 1.2~1.3g/cm3。
- A kind of 4. preparation method of multilayer handsheet according to claim 1, it is characterised in that：The institute that step (5) obtains The surface temperature for stating multilayer handsheet is 24~25 DEG C.
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| CN108103827A (en) * | 2017-12-15 | 2018-06-01 | 天津科技大学 | A kind of laboratory is manufactured paper with pulp the method for paper for daily use |
| CN110284354B (en) * | 2019-05-17 | 2021-07-20 | 义乌市骏业纸制品有限公司 | Preparation method of biomass packaging paperboard |
| CN112609504A (en) * | 2020-12-10 | 2021-04-06 | 上海东升新材料有限公司 | Paper pattern making method for evaluating application effect of low-chlorine wet strength agent in household paper |
| CN113529494B (en) * | 2021-07-27 | 2023-05-02 | 浙江省林业科学研究院 | Preparation method of bamboo-based hybrid fiber felt for VARTM (vacuum forming) composite material |
| CN115679748A (en) * | 2022-05-18 | 2023-02-03 | 浙江唐丰特种纸有限公司 | Production method of high-smoke-tightness tipping base paper |
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| JPS5450613A (en) * | 1977-09-28 | 1979-04-20 | Tokyo Shibaura Electric Co | Production of aromatic polyamide paper laminate |
| JP4765606B2 (en) * | 2005-12-16 | 2011-09-07 | 凸版印刷株式会社 | Manufacturing method of recording medium forming paper base material |
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| CN102174766A (en) * | 2011-01-18 | 2011-09-07 | 金红叶纸业集团有限公司 | Production method of handsheet with high bulk and low ration |
| CN103806325A (en) * | 2014-01-20 | 2014-05-21 | 清华大学 | Preparation method for transformer insulation paper and system thereof for laboratory |
| CN203960666U (en) * | 2014-06-23 | 2014-11-26 | 芬欧汇川(中国)有限公司 | System for the preparation of plasm-glue-blending handsheet |
| CN104711903A (en) * | 2015-03-18 | 2015-06-17 | 北京印刷学院 | Fruit cultivation bag paper with multilayer compound structure, as well as manufacturing method of fruit cultivation bag paper |
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