CN108149507A - A kind of preparation method of the high filter stick shaping paper thoroughly of oleophobic property antiseepage - Google Patents
A kind of preparation method of the high filter stick shaping paper thoroughly of oleophobic property antiseepage Download PDFInfo
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- CN108149507A CN108149507A CN201810006280.5A CN201810006280A CN108149507A CN 108149507 A CN108149507 A CN 108149507A CN 201810006280 A CN201810006280 A CN 201810006280A CN 108149507 A CN108149507 A CN 108149507A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention belongs to papermaking and tobacco business field more particularly to a kind of production technologies of high filter stick shaping paper.A kind of preparation method of the high filter stick shaping paper thoroughly of oleophobic property antiseepage, this method include the following steps：1) wood pulp size degradation, 2) it discongests and is beaten, 3) it is with slurry, 4) it manufactures paper with pulp, 5) top sizing, 6) it dries, batch and cut packaging.The surface size of the top sizing include PVA solution, water repellent agent and oil-proofing agent, a concentration of the 5~10% of the PVA solution, dosage be 30 60kg/t paper, the water repellent agent dosage be 5 20kg/t paper, the oil-proofing agent dosage be 4 20kg/t paper.Product prepared by the present invention on grease proofing barrier performance is ensured, using with can natural degradation, food security raw material, assign antiseepage the high excellent degradability of filter stick shaping paper, food touch-safe thoroughly.
Description
Technical field
The invention belongs to papermaking and tobacco business field more particularly to a kind of production technologies of high filter stick shaping paper.
Background technology
When filter stick shaping paper is processing filter stick for cigarettes, for rolling up the dedicated paper of packet filter material, applied to being wrapped in cigarette filter
Acetate silk is wrapped up in, is between internal acetate silk core and outer layer cork paper in cigarette filter constructions.Mainly have
Common filter stick shaping paper and high saturating filter stick shaping paper.There is no the filter stick shaping paper of particular/special requirement to air permeability common filter rod forming
Paper；There is the filter stick shaping paper being distinctly claimed to air permeability high saturating filter stick shaping paper.The air permeability of high filter stick shaping paper thoroughly wants root
It is selected according to the collocation between the tar content of cigarette and various tar reduction raw material.
Cigarette microcapsule essence technology, with the development of low-coke tar cigarette, the fragrance of tobacco in itself is by filtering and dilutes,
Fragrance seems apparent deficiency that flavoring not only can overcome the disadvantages that these losses, but also not increase tar yield.The flavoring of cigarette product is formula
One important link of design is the effective means for improving cigarette product quality, is the particularly important means of cigarette industry, is volume
One of core technology of cigarette enterprise and its secrecy.The essence capsule of addition package unique perfume, is smoking in cigarette filter tip rod
Before pinch brokenly essence capsule, ooze out the oiliness essence in capsule, improve smoking when fragrance.But it is high that oiliness essence is easy to infiltration
Saturating filter stick shaping paper, causes filter rod to pollute, while may make bonding place explosion of the high filter stick shaping paper thoroughly in package tow again.
In order to coordinate the demand of tobacco enterprise, the present invention develops a kind of high saturating filter rod forming of antiseepage with oleophobic property
Paper, this filter stick shaping paper can effectively prevent the essential oil exudation filter stick surface in filter rod.
Application publication number：CN 105887569A disclose a kind of grease proofing saturating forming paper of height；CN 105862506A are disclosed
A kind of grease proofing forming paper production technology, the technique include：Wood pulp size degradation, mashing, it is with slurry, manufacture paper with pulp, Top wire former, squeezing, preceding road
Drying, sprinkling auxiliary agent, table glue, the drying of rear road and coiling process.Above-mentioned technique shortcoming has：1st, sprinkling oil-proofing agent is more difficult same
It is sprayed uniformly on one paper, while sprinkling can only be sprayed at single side, another side is more difficult grease proofing effect；2nd, spray pattern makes grease proofing
Agent has larger loss；3rd, spray pattern is unfavorable for controlling keeping for oil-proofing agent, cannot guarantee that enough oil-proofing agent additive amounts；
4th, sprinkling auxiliary agent can be destroyed paper appearance and planarization；5th, it touches to spill oil-proofing agent and table glue size-press starch and combine and be extremely difficult to
Satisfied oleophobic property anti-seepage effect.
Invention content
In view of above deficiency and difference, one object of the present invention provides a kind of oleophobic property antiseepage high saturating filter stick shaping paper
Preparation method.Product prepared by the present invention is on grease proofing barrier performance is ensured, using with can natural degradation, food security
Raw material, assign antiseepage the high excellent degradability of filter stick shaping paper, food touch-safe thoroughly.
In order to realize above-mentioned purpose, present invention employs following technical solutions：
A kind of preparation method of the high filter stick shaping paper thoroughly of oleophobic property antiseepage, this method include the following steps：
1) wood pulp size degradation：It is 40-100% bleaching needle-point leaf pulps by mass percentage, 0-50% bleached hardwood pulps, 0-
50% mercerization wood pulp, which is added in pulper, carries out size degradation；
2) it discongests and is beaten：Various wood pulps are discongested and are beaten again after immersion after pulper mixing size degradation, defibrination
Concentration is controlled in 3.0-6.0%；Machine chest is put into after the completion of discongesting and being beaten；
3) it is with slurry：The wood pulp of milled in mud pit is configured by a certain percentage, mixes, adds wet strength agent, wet strength agent
Addition be 1.0~6.0%；Wet strength agent is diluted to 0.8~2.0% concentration；
4) it manufactures paper with pulp：By the pulp dilution prepared to 0.01-0.1% concentration, it is extracted into and destroies forebay through fan pump Top wire former, pressure
It squeezes, is dry；
5) top sizing：The page dried by preceding road enters surface sizing device and carries out top sizing, surface size
Page is totally submerged, by the uniform extruding of top sizing roller, surface size is uniformly coated on page；Surface size
A concentration of 2%-7%；The surface size of the top sizing includes PVA solution, water repellent agent and oil-proofing agent, the PVA
A concentration of the 5~10% of solution, dosage are 30-60kg/t paper, and the water repellent agent dosage is 5-20kg/t paper, and described is grease proofing
Agent dosage is 4-20kg/t paper；
6) it dries, batch and cut packaging.
As further changing, the mass percent of bleached hardwood pulp is 60~90% in step 1), bleached hardwood pulp
With mercerization wood pulp either-or, bleached hardwood pulp is 20~40%, and mercerization wood pulp is 20~40%.
As further changing, the wood pulp beating degree discongested and be beaten by step 2) is controlled in 13-25 ° of SR, weight in wet base >=6g.
As further changing, paper-making fibre slurry further includes viscose staple fibre, and the addition of viscose staple fibre is 0-50%,
First viscose rayon is disperseed, is configured to 3.0-6.0% strength solutions, it is with slurry then to add in progress in step 3).As further preferably,
The addition of viscose staple fibre is 10-30%.
Preferably, the addition of the wet strength agent described in step 3) is 1.5~3.0%.Preferably, the wet strength agent
Using the one or two of PAE and PPE.
Preferably, the oil-proofing agent described in step 5) uses fluorinated polymer or acrylic latex.
Preferably, the water repellent agent described in step 5) is using melamine class water-repellent for paper making, amino resins class water resistant
It is one or more in agent, zirconium carbonate ammonium water repellent agent and polyamide carbamide resin.
Beneficial effects of the present invention：The high filter stick shaping paper thoroughly of antiseepage produced by the invention can effectively prevent the oil in filter rod
Property essence is exuded to filter rod surface, and the formation of anti-seepage effect focuses on oil-proofing agent and water repellent agent, PVA is used in conjunction with；It is anti-
Finish, water repellent agent, PVA are adsorbed in top sizing in page fiber surface, in Drying Process, with moisture in page
Evaporation and temperature raising, the polymer substance in solution forms close reticular membrane on page, and this film, which has, to be less than
The surface energy of oil, makes oils be difficult to soak page.Product produced by the invention is on grease proofing barrier performance is ensured, using with can
Natural degradation, food security raw material assigns antiseepage the high excellent degradability of filter stick shaping paper, food touch-safe thoroughly
Property.
Specific embodiment
The specific implementation of the present invention is described further, but implementation of the invention and protection domain are not below in conjunction with example
It is limited to this.
There are two types of the oil-proofing agents used in the embodiment of the present invention：One kind is You Nien (UNIDYNE) fluorine system water and oil repellent agent,
It is a kind of fluorinated polymer；Another kind is a kind of water and oil repellent agent of Tao Shi productions, and main component is acrylic latex.
A kind of high filter stick shaping paper production technology thoroughly of oleophobic property antiseepage, includes the following steps：Wood pulp size degradation, fiber dispersion,
It discongests and is beaten, is with slurry, manufacturing paper with pulp, Top wire former, squeezing, the drying of preceding road, top sizing, rear road are dried, batched, cutting packaging etc.
Process.
The high filter stick shaping paper thoroughly of oleophobic property antiseepage produced by the invention can ensure there is excellent grease proofing, water resistance,
Additionally there is biodegradable, food touch-safe.
The high filter stick shaping paper thoroughly of oleophobic property antiseepage produced by the invention measures paper according to the method for TAPPI T 559cm-02
Oil preventing performance.
The high filter stick shaping paper thoroughly of oleophobic property antiseepage produced by the invention is surveyed according to 1540 paper of GB/T and the requirement of cardboard water imbibition
Determine the water resistance of paper.
Below by specific example, the present invention is described further.
Embodiment 1
Wet end furnish：Not 60% bleaching needle-point leaf pulp of sharp board, fragrant sub- board bleached hardwood pulp 40%.
Two kinds of wood pulps are discongested and are beaten again after impregnating 25 minutes after hydrabrusher size degradation, refining concentration control
3.0%.Mashing mode is based on discongesting, and cut staple, beating degree are not controlled in 15-18 ° of SR, weight in wet base >=6g, dredged as far as possible
Machine chest is put into after the completion of solution and mashing.
It is with slurry：The wood pulp of milled in mud pit is configured by a certain percentage, mixes, adds wet strength agent PPE, dosage
25kg/t paper.1.2% concentration is all diluted to after mixing.
It manufactures paper with pulp：By the pulp dilution prepared to 0.1% concentration, it is extracted into and destroies forebay through fan pump Top wire former, squeezing, dry
It is dry.
Top sizing operates：PVAC polyvinylalcohol concentration of ordinary dissolution：3.5%, dosage is 40kg/t paper；PVAC polyvinylalcohol is molten
A kind of water repellent agent is added after solution is good, dosage is 5kg/t paper；You Nien (UNIDYNE) fluorine system water and oil repellent agent is eventually adding, is used
It measures as 5kg/t paper；
By drying after page surface sizing, drying temperature be 105 DEG C be 3-6% to moisture after batch, cut packet
Dress etc..
The high grease proofing grade of filter stick shaping paper thoroughly of the oleophobic property antiseepage of production is 6 grades (TAPPI T 559cm-02).
Embodiment 2
Wet end furnish：Not 80% bleaching needle-point leaf pulp of sharp board, Ruian board mercerization wood pulp 20%.
Two kinds of wood pulps are discongested and are beaten again after forty minutes through impregnating after hydrabrusher size degradation, refining concentration control
4.0%.Mashing mode is based on discongesting, and cut staple, beating degree are not controlled in 14-17 ° of SR, weight in wet base >=8g, dredged as far as possible
Machine chest is put into after the completion of solution and mashing.
It is with slurry：The wood pulp of milled in mud pit is configured by a certain percentage, mixes, adds wet strength agent PPE, dosage
30kg/t paper.1.0% concentration is all diluted to after mixing.
It manufactures paper with pulp：By the pulp dilution prepared to 0.08% concentration, it is extracted into and destroies forebay through fan pump Top wire former, squeezing, dry
It is dry.
Top sizing operates：PVAC polyvinylalcohol concentration of ordinary dissolution：4%, dosage is 45kg/t paper；PVAC polyvinylalcohol dissolves
A kind of water repellent agent is added after good, dosage is 7kg/t paper；It is eventually adding You Nien (UNIDYNE) fluorine system water and oil repellent agent, dosage
For 8kg/t paper；
By drying after page surface sizing, drying temperature be 105 DEG C be 3-6% to moisture after batch, cut packet
Dress etc..
The high grease proofing grade of filter stick shaping paper thoroughly of the oleophobic property antiseepage of production is 6 grades (TAPPI T 559cm-02).
Embodiment 3
Wet end furnish：Not 75% bleaching needle-point leaf pulp of sharp board, Koln board viscose staple fibre 25%.
Wood pulp is discongested and is beaten again after impregnating 15 minutes after hydrabrusher size degradation, and refining concentration control exists
5.0%.Mashing mode is based on discongesting, and cut staple, beating degree are not controlled in 13-16 ° of SR, weight in wet base >=9g, discongested as far as possible
Machine chest is put into after the completion of mashing.
It is with slurry：The wood pulp of milled is put into mud pit, then adds in viscose staple fibre by a certain percentage, is added wet strong
Agent PPE, dosage 40kg/t paper.0.9% concentration is all diluted to after mixing.
It manufactures paper with pulp：By the pulp dilution prepared to 0.07% concentration, it is extracted into and destroies forebay through fan pump Top wire former, squeezing, dry
It is dry.
Top sizing operates：PVAC polyvinylalcohol concentration of ordinary dissolution：4.5%, dosage is 50kg/t paper；PVAC polyvinylalcohol is molten
A kind of water repellent agent is added after solution is good, dosage is 10kg/t paper；You Nien (UNIDYNE) fluorine system water and oil repellent agent is eventually adding,
Dosage is 12kg/t paper；
By drying after page surface sizing, drying temperature be 105 DEG C be 3-6% to moisture after batch, cut packet
Dress etc..
The high grease proofing grade of filter stick shaping paper thoroughly of the oleophobic property antiseepage of production is 6 grades (TAPPI T 559cm-02).
Embodiment 4
Wet end furnish：Not 75% bleaching needle-point leaf pulp of sharp board, fragrant sub- board bleached hardwood pulp 25%.
Two kinds of wood pulps are discongested and are beaten again after twenty minutes through impregnating after hydrabrusher size degradation, refining concentration control
4.5%.Mashing mode is based on discongesting, and cut staple, beating degree are not controlled in 15-17 ° of SR, weight in wet base >=6.5g as far as possible,
Machine chest is put into after the completion of discongesting and being beaten.
It is with slurry：The wood pulp of milled in mud pit is configured by a certain percentage, mixes, adds wet strength agent PPE, dosage
20kg/t paper.1.2% concentration is all diluted to after mixing.
It manufactures paper with pulp：By the pulp dilution prepared to 0.9% concentration, it is extracted into and destroies forebay through fan pump Top wire former, squeezing, dry
It is dry.
Top sizing operates：PVAC polyvinylalcohol concentration of ordinary dissolution：3%, dosage is 35kg/t paper；PVAC polyvinylalcohol dissolves
A kind of water repellent agent is added after good, dosage is 15kg/t paper；A kind of water and oil repellent agent of Tao Shi productions is eventually adding, dosage is
15kg/t paper；
By drying after page surface sizing, drying temperature be 105 DEG C be 3-6% to moisture after batch, cut packet
Dress etc..The high grease proofing grade of filter stick shaping paper thoroughly of the oleophobic property antiseepage of production is 5 grades (TAPPI T 559cm-02).
The specific quality index of the high filter stick shaping paper thoroughly of oleophobic property antiseepage that the various embodiments described above of the present invention are produced is as follows：
Claims (9)
1. the preparation method of the high filter stick shaping paper thoroughly of a kind of oleophobic property antiseepage, which is characterized in that this method includes the following steps：
1) wood pulp size degradation：It is 40-100% bleaching needle-point leaf pulps by mass percentage, 0-50% bleached hardwood pulps, 0-50%
Mercerization wood pulp, which is added in pulper, carries out size degradation；
2) it discongests and is beaten：Various wood pulps are discongested and are beaten again after immersion after pulper mixing size degradation, refining concentration
Control is in 3.0-6.0%；Machine chest is put into after the completion of discongesting and being beaten；
3) it is with slurry：The wood pulp of milled in mud pit is configured by a certain percentage, is mixed, adds wet strength agent, wet strength agent adds
It is 1.0~6.0% to enter amount；Wet strength agent is diluted to 0.8~2.0% concentration；
4) it manufactures paper with pulp：By the pulp dilution prepared to 0.01-0.1% concentration, be extracted into copy forebay through fan pump Top wire former, squeezing,
It is dry；
5) top sizing：The page dried by preceding road enters surface sizing device and carries out top sizing, and surface size is complete
Page is submerged, by the uniform extruding of top sizing roller, surface size is uniformly coated on page；The concentration of surface size
For 2%-7%；The surface size of the top sizing includes PVA solution, water repellent agent and oil-proofing agent, the PVA solution
A concentration of 5~10%, dosage be 30-60kg/t paper, the water repellent agent dosage be 5-20kg/t paper, the oil-proofing agent use
It measures as 4-20kg/t paper；
6) it dries, batch and cut packaging.
2. preparation method according to claim 1, it is characterised in that：The mass percent of bleached hardwood pulp in step 1)
It is 60~90%, bleached hardwood pulp and mercerization wood pulp either-or, bleached hardwood pulp are 20~40%, mercerization wood pulp
It is 20~40%.
3. preparation method according to claim 1, it is characterised in that：The wood pulp beating degree discongested and be beaten by step 2)
Control is in 13-25 ° of SR, weight in wet base >=6g.
4. preparation method according to claim 1, it is characterised in that：Paper-making fibre slurry further includes viscose staple fibre, glues
The addition of glue staple fiber is 0-50%, first disperses viscose rayon, is configured to 3.0-6.0% strength solutions, then adds in step
Rapid 3) middle progress is with slurry.
5. preparation method according to claim 4, it is characterised in that：The addition of viscose staple fibre is 10-30%.
6. preparation method according to claim 1, it is characterised in that：The addition of step 3) wet strength agent for 1.5~
3.0%.
7. preparation method according to claim 6, it is characterised in that：Wet strength agent uses the one or two of PAE and PPE.
8. preparation method according to claim 1, it is characterised in that：In step 5) oil-proofing agent using fluorinated polymer or
Acrylic latex.
9. preparation method according to claim 1, it is characterised in that：Water repellent agent uses melamine class papermaking in step 5)
It is one or more in water repellent agent, amino resins class water repellent agent, zirconium carbonate ammonium water repellent agent and polyamide carbamide resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810006280.5A CN108149507A (en) | 2018-01-04 | 2018-01-04 | A kind of preparation method of the high filter stick shaping paper thoroughly of oleophobic property antiseepage |
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| CN201810006280.5A CN108149507A (en) | 2018-01-04 | 2018-01-04 | A kind of preparation method of the high filter stick shaping paper thoroughly of oleophobic property antiseepage |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552247A (en) * | 2019-08-28 | 2019-12-10 | 牡丹江恒丰纸业股份有限公司 | Production method of multi-element composite forming paper |
| CN112127190A (en) * | 2020-09-28 | 2020-12-25 | 安徽天翔高新特种包装材料集团有限公司 | Method for manufacturing long-acting sweet cigarette tipping paper |
| CN112575616A (en) * | 2020-11-30 | 2021-03-30 | 山东华泰纸业股份有限公司 | Production method of high-strength high-air-permeability extensible packaging paper |
| CN112761029A (en) * | 2020-12-23 | 2021-05-07 | 浙江华丰纸业科技有限公司 | Raw paper of groove tip rod and production method |
| CN112761026A (en) * | 2020-12-24 | 2021-05-07 | 浙江华丰纸业科技有限公司 | Oil-proof forming paper and preparation method thereof |
| CN114875706A (en) * | 2022-04-02 | 2022-08-09 | 浙江凯恩新材料有限公司 | Raw paper of high-performance all-in-one machine thermosensitive version paper, production process and thermosensitive version paper prepared by production process |
| CN115182199A (en) * | 2022-06-14 | 2022-10-14 | 浙江凯恩新材料有限公司 | High-strength high-stiffness high-transparency filter stick forming paper, preparation method, application and cigarette product |
| CN115467189A (en) * | 2022-09-16 | 2022-12-13 | 万邦特种材料股份有限公司 | Method for manufacturing yellow high-transparency formed paper |
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