CN108316042B - A kind of preparation method of corrosion-resistant polyurethane pressure roller - Google Patents
A kind of preparation method of corrosion-resistant polyurethane pressure roller Download PDFInfo
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- CN108316042B CN108316042B CN201711386581.7A CN201711386581A CN108316042B CN 108316042 B CN108316042 B CN 108316042B CN 201711386581 A CN201711386581 A CN 201711386581A CN 108316042 B CN108316042 B CN 108316042B
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- polyurethane resin
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/08—Pressure rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0032—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions
- B29D99/0035—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions rollers or cylinders having an axial length of several times the diameter, e.g. for embossing, pressing, or printing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/54—Polycondensates of aldehydes
- C08G18/542—Polycondensates of aldehydes with phenols
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The present invention relates to pressure roller technical fields, more particularly to a kind of preparation method of corrosion-resistant polyurethane pressure roller, the preparation method includes that modified polyurethane resin is made using the raw material of formula ratio, then by coating the stacking of the polyurethane resin and steel that are modified, corrode polyurethane pressure roller from chemically-resistant machine is obtained, the preparation method simple process is suitable for large-scale production and application.
Description
Technical field
The present invention relates to pressure roller technical fields, and in particular to a kind of preparation method of corrosion-resistant polyurethane pressure roller.
Background technique
When commercial paper, need using squeezing roll-in except paper moisture content, and be squeezed the bulk of the paper of roll-in compared with
Height, to obtain into the higher paper of paper stiffness.Since polyurethane has intensity height, high resiliency, mechanical strength, wear-resisting, surface
It is highly polished, and it is also higher than General Purpose Rubber with metal roller core caking property, thus, existing paper machine knobbling rolls is widely used
Polyurethane rubber-covered layer is lost so that pressure roller can preferably be run under a constant linear speed and high pressure.Although existing polyurethane has had
There is preferable intensity, however, the current polyurethane in pressure roller is mainly made of the raw material containing isocyanates, isocyanates holds
Easily react with compound amine, water, alcohol, acid, the alkali of reactive hydrogen atom, and paper is using bleaching agent, curing agent, toughening
Made of the chemical agents such as agent, regulator, vinyl sulfonic acid sodium and fiber pulp, these chemical agents have certain corrosivity, polyurethane pressure
Squeeze the long-term high linear speed high pressure of roller under spreading paper when, polyurethane can by chemistries, can destroy pressure roller intensity and
The finish on its surface, so that influencing the dehydration efficiency of pressure roller.
Summary of the invention
For the prior art, there are above-mentioned technical problems, and it is an object of that present invention to provide one kind can prepare corrosion-resistant gather
The preparation method of urethane pressure roller, the preparation method simple process are suitable for large-scale production and application.
For achieving the above object, the following technical schemes are provided:
A kind of preparation method of corrosion-resistant polyurethane pressure roller is provided, comprising the following steps:
Step 1: preparing modified polyurethane resin
(1) raw material of following weight percent is weighed:
(2) by the poly (propylene carbonate) dihydric alcohol of formula ratio at 80~120 DEG C 30~40min of vacuum dehydration, after dehydration
It is cooled to room temperature, the azo initiator of formula ratio and warming while stirring is then added to 70~80 DEG C, is subsequently added into and matches
The diisocyanate just measured, continuation are stirred to react 4~5h at 70~80 DEG C, obtain the first mixture；
(3) tetrafluoroethene of formula ratio is uniformly mixed at normal temperature with the inorganic peroxy initiator of formula ratio, obtains
Two mixtures；
(4) ethyl acetate of above-mentioned a part of formula ratio is added in first mixture and is sufficiently mixed uniformly,
Then the ethyl acetate of above-mentioned another part formula ratio is added in the second mixture and is sufficiently mixed uniformly, it then will mixing
The first mixture for having ethyl acetate and the second mixture for being mixed with ethyl acetate are added to the phenolic aldehyde of formula ratio while stirring
Resin, adds the crosslinking agent of formula ratio, and continuation is stirred to react 0.5~1h at 70~80 DEG C, obtains modified polyurethane resin
Fusant；Wherein, be added to the ethyl acetate of the first mixture and the ethyl acetate for being added to the second mixture weight it
Than being 3: 1~2；
(5) by the fusant of above-mentioned modified polyurethane resin by calendering formation machine calendering formation, after then rolling
Modified polyurethane resin it is cooling, obtain modified polyurethane resin membrane material；
Step 2: cladding pressure roller
Use roller main body of the cast iron casting for cast at pressure roller；
Above-mentioned modified polyurethane resin membrane material is first coated in the circumferential lateral surface of the roller main body, and it is modified poly- to obtain first
Urethane resin layer then coats steel layer on the first modified polyurethane resin layer, finally coats again in the steel layer
One layer of above-mentioned modified polyurethane resin membrane material obtains the second modified polyurethane resin layer to get polyurethane pressure roller.
Wherein, the azo initiator is in azodiisobutyronitrile, azobisisoheptonitrile and azo-bis-iso-dimethyl
One or more kinds of mixtures.
Wherein, the inorganic peroxy initiator is ammonium persulfate or potassium peroxydisulfate.
Wherein, the crosslinking agent is cumyl peroxide, 2,5- dimethyl -2,5 di-t-butyl hexane peroxide and uncle
The mixture of one or more of butylperoxide.
Wherein, the calendering formation machine rolls the fusant of modified polyurethane resin at 40~50 DEG C.
Wherein, in the second step, two symmetrical half tube bodies are first cast into using steel layer, then by two symmetrical half
Tube body is respectively coated by the first modified polyurethane resin layer, thus the steel layer coated.
Wherein, the thickness of the first modified polyurethane resin layer is 5~10cm, the thickness of the steel layer is 5~
The thickness of 10cm, the second modified polyurethane resin layer are 10~20cm.
Beneficial effects of the present invention:
(1) preparation method of a kind of corrosion-resistant polyurethane pressure roller of the invention, uses diisocyanate, polymerized thylene carbonate third
Ester dihydric alcohol and tetrafluoroethene are monomer, and the double bond of tetrafluoroethene easily occurs with diisocyanate, poly (propylene carbonate) dihydric alcohol
Polymerization reaction is to obtain polymer, and the polymer further comprises the phenolic resin with the effect that is adhered, to guarantee polymer
Combination fastness, to obtain modified polyurethane, which contains polyurethane and tetrafluoroethene, has preferable strong
Degree and solvent resistance, substantially increase the corrosion resistance of the pressure roller where the modified polyurethane.
(2) preparation method of a kind of corrosion-resistant polyurethane pressure roller of the invention is coated using modified polyurethane tree and is squeezed
Roller when coating, first coats one layer of modified polyurethane layer, then coats one layer of steel layer, finally coat one layer of poly- ammonia of modification again
Ester layer, so that accompanying steel layer in modified polyurethane layer, not only enhancing the intensity between modified polyurethane layer in this way and not changing
Become the resilience of entire layer of polyurethane, and the modified polyurethane layer of internal layer can be prevented by chemistries, further improves
The corrosion resistance of polyurethane pressure roller.
(3) preparation method of a kind of corrosion-resistant polyurethane pressure roller of the invention, processing step is simple, is suitable for extensive
Production application.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1.
The preparation method of the corrosion-resistant polyurethane pressure roller of one of the present embodiment, comprising the following steps:
Step 1: preparing modified polyurethane resin
(1) raw material of following weight percent: diisocyanate 15%, poly (propylene carbonate) dihydric alcohol 15%, four is weighed
Vinyl fluoride 20%, phenolic resin 19.84%, ethyl acetate 30%, azo initiator 0.04%, inorganic peroxy initiator
0.02%, crosslinking agent 0.1%.
(2) by the poly (propylene carbonate) dihydric alcohol of formula ratio at 80 DEG C vacuum dehydration 30min, be cooled to after dehydration
Room temperature, is then added the azo initiator of formula ratio, and warming while stirring is subsequently added into the diisocyanate of formula ratio to 70 DEG C
Ester, continuation are stirred to react 4h at 70 DEG C, obtain the first mixture；Wherein, the azo initiator is azodiisobutyronitrile, idol
The mixture of the different heptonitrile of nitrogen two.
(3) tetrafluoroethene of formula ratio is uniformly mixed at normal temperature with the inorganic peroxy initiator of formula ratio, obtains
Two mixtures；Wherein, the inorganic peroxy initiator is ammonium persulfate.
(4) ethyl acetate of above-mentioned a part of formula ratio is added in first mixture and is sufficiently mixed uniformly,
Then the ethyl acetate of above-mentioned another part formula ratio is added in the second mixture and is sufficiently mixed uniformly, it then will mixing
The first mixture for having ethyl acetate and the second mixture for being mixed with ethyl acetate are added to the phenolic aldehyde of formula ratio while stirring
Resin, adds the crosslinking agent of formula ratio, and continuation is stirred to react 0.5h at 70 DEG C, obtains the melting of modified polyurethane resin
Object；Wherein, the weight ratio of the ethyl acetate for being added to the first mixture and the ethyl acetate for being added to the second mixture is 3:
1；Wherein, the crosslinking agent is the mixture of cumyl peroxide, 2,5- dimethyl -2,5 di-t-butyl hexane peroxide.
(5) fusant of above-mentioned modified polyurethane resin is passed through into calendering formation machine in 40 DEG C of calendering formations, then will
Modified polyurethane resin after calendering is cooling, obtains modified polyurethane resin membrane material；
Step 2: cladding pressure roller
(1) roller main body of the cast iron casting for cast at pressure roller is used；
(2) above-mentioned modified polyurethane resin membrane material is first coated in the circumferential lateral surface of the roller main body, is obtained first and is changed
Property urethane resin layer, then on the first modified polyurethane resin layer coat steel layer, finally in the steel layer packet
It is covered with the modified polyurethane resin membrane material stated, obtains the second modified polyurethane resin layer to get polyurethane pressure roller.
In the present embodiment, two symmetrical half tube bodies are first cast into using steel layer, then two symmetrical half tube bodies are divided
It is not coated on the first modified polyurethane resin layer, thus the steel layer coated, consequently facilitating preferably and quickly
Coat steel layer.
In the present embodiment, the thickness of the first modified polyurethane resin layer is 5cm, and the thickness of the steel layer is 5cm,
The thickness of the second modified polyurethane resin layer is 10cm, to guarantee the intensity and its rotproofness of pressure roller entirety.
Embodiment 2.
The preparation method of the corrosion-resistant polyurethane pressure roller of one of the present embodiment, comprising the following steps:
Step 1: preparing modified polyurethane resin
(1) raw material of following weight percent: diisocyanate 30%, poly (propylene carbonate) dihydric alcohol 15%, four is weighed
Vinyl fluoride 10%, phenolic resin 10%, ethyl acetate 34.36%, azo initiator 0.08%, inorganic peroxy initiator
0.06%, crosslinking agent 0.5%；
(2) by the poly (propylene carbonate) dihydric alcohol of formula ratio at 120 DEG C vacuum dehydration 40min, cooled down after dehydration
To room temperature, the azo initiator of formula ratio is then added, warming while stirring is subsequently added into the diisocyanate of formula ratio to 80 DEG C
Ester, continuation are stirred to react 5h at 80 DEG C, obtain the first mixture；Wherein, the azo initiator be azobisisoheptonitrile and
The mixture of one or more of azo-bis-iso-dimethyl.
(3) tetrafluoroethene of formula ratio is uniformly mixed at normal temperature with the inorganic peroxy initiator of formula ratio, obtains
Two mixtures；Wherein, the inorganic peroxy initiator thing potassium peroxydisulfate.
(4) ethyl acetate of above-mentioned a part of formula ratio is added in first mixture and is sufficiently mixed uniformly,
Then the ethyl acetate of above-mentioned another part formula ratio is added in the second mixture and is sufficiently mixed uniformly, it then will mixing
The first mixture for having ethyl acetate and the second mixture for being mixed with ethyl acetate are added to the phenolic aldehyde of formula ratio while stirring
Resin, adds the crosslinking agent of formula ratio, and continuation is stirred to react 1h at 80 DEG C, obtains the fusant of modified polyurethane resin；
Wherein, the weight ratio of the ethyl acetate and the ethyl acetate for being added to the second mixture that are added to the first mixture is 3: 2；Its
In, the crosslinking agent is tert-butyl peroxide.
(5) fusant of above-mentioned modified polyurethane resin is passed through into calendering formation machine in 50 DEG C of calendering formations, then will
Modified polyurethane resin after calendering is cooling, obtains modified polyurethane resin membrane material.
Step 2: cladding pressure roller
(1) roller main body of the cast iron casting for cast at pressure roller is used；
(2) above-mentioned modified polyurethane resin membrane material is first coated in the circumferential lateral surface of the roller main body, is obtained first and is changed
Property urethane resin layer, then on the first modified polyurethane resin layer coat steel layer, finally in the steel layer packet
It is covered with the modified polyurethane resin membrane material stated, obtains the second modified polyurethane resin layer to get polyurethane pressure roller.
In the present embodiment, two symmetrical half tube bodies are first cast into using steel layer, then two symmetrical half tube bodies are divided
It is not coated on the first modified polyurethane resin layer, thus the steel layer coated, consequently facilitating preferably and quickly
Coat steel layer.
In the present embodiment, the thickness of the first modified polyurethane resin layer is 10cm, and the thickness of the steel layer is
The thickness of 10cm, the second modified polyurethane resin layer are 20cm, to guarantee the intensity and its rotproofness of pressure roller entirety.
Embodiment 3.
The preparation method of the corrosion-resistant polyurethane pressure roller of one of the present embodiment, comprising the following steps:
Step 1: preparing modified polyurethane resin
(1) raw material of following weight percent: diisocyanate 17%, poly (propylene carbonate) dihydric alcohol 17%, four is weighed
Vinyl fluoride 15%, phenolic resin 15%, ethyl acetate 35.71%, azo initiator 0.06%, inorganic peroxy initiator
0.03%, crosslinking agent 0.2%.
(2) by the poly (propylene carbonate) dihydric alcohol of formula ratio at 100 DEG C vacuum dehydration 35min, cooled down after dehydration
To room temperature, the azo initiator of formula ratio is then added, warming while stirring is subsequently added into the diisocyanate of formula ratio to 75 DEG C
Ester, continuation are stirred to react 4.5h at 75 DEG C, obtain the first mixture；Wherein, the azo initiator is two isobutyric acid of azo.
(3) tetrafluoroethene of formula ratio is uniformly mixed at normal temperature with the inorganic peroxy initiator of formula ratio, obtains
Two mixtures；Wherein, the inorganic peroxy initiator potassium persulfate.
(4) ethyl acetate of above-mentioned a part of formula ratio is added in first mixture and is sufficiently mixed uniformly,
Then the ethyl acetate of above-mentioned another part formula ratio is added in the second mixture and is sufficiently mixed uniformly, it then will mixing
The first mixture for having ethyl acetate and the second mixture for being mixed with ethyl acetate are added to the phenolic aldehyde of formula ratio while stirring
Resin, adds the crosslinking agent of formula ratio, and continuation is stirred to react 0.8h at 75 DEG C, obtains the melting of modified polyurethane resin
Object；Wherein, the weight ratio of the ethyl acetate for being added to the first mixture and the ethyl acetate for being added to the second mixture is 3:
1.5；Wherein, the crosslinking agent is cumyl peroxide.
It (5), then will pressure by the fusant of above-mentioned modified polyurethane resin by 45 DEG C of calendering formations of calendering formation machine
The modified polyurethane resin delayed is cooling, obtains modified polyurethane resin membrane material.
Step 2: cladding pressure roller
(1) roller main body of the cast iron casting for cast at pressure roller is used；
(2) above-mentioned modified polyurethane resin membrane material is first coated in the circumferential lateral surface of the roller main body, is obtained first and is changed
Property urethane resin layer, then on the first modified polyurethane resin layer coat steel layer, finally in the steel layer packet
It is covered with the modified polyurethane resin membrane material stated, obtains the second modified polyurethane resin layer to get polyurethane pressure roller.
In the present embodiment, two symmetrical half tube bodies are first cast into using steel layer, then two symmetrical half tube bodies are divided
It is not coated on the first modified polyurethane resin layer, thus the steel layer coated, consequently facilitating preferably and quickly
Coat steel layer.
In the present embodiment, the thickness of the first modified polyurethane resin layer is 6cm, and the thickness of the steel layer is 6cm,
The thickness of the second modified polyurethane resin layer is 15cm, to guarantee the intensity and its rotproofness of pressure roller entirety.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range finally should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than protect to the present invention
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (7)
1. a kind of preparation method of corrosion-resistant polyurethane pressure roller, it is characterized in that: the following steps are included:
Step 1: preparing modified polyurethane resin
(1) raw material of following weight percent is weighed:
(2) by the poly (propylene carbonate) dihydric alcohol of formula ratio at 80~120 DEG C 30~40min of vacuum dehydration, by it after dehydration
It is cooled to room temperature, the azo initiator of formula ratio and warming while stirring is then added to 70~80 DEG C, is subsequently added into formula ratio
Diisocyanate, continuation be stirred to react 4~5h at 70~80 DEG C, obtain the first mixture；
(3) tetrafluoroethene of formula ratio is uniformly mixed at normal temperature with the inorganic peroxy initiator of formula ratio, it is mixed obtains second
Close object；
(4) ethyl acetate of above-mentioned a part of formula ratio is added in first mixture and is sufficiently mixed uniformly, then
The ethyl acetate of above-mentioned another part formula ratio is added in the second mixture and is sufficiently mixed uniformly, second is then blended with
First mixture of acetoacetic ester and the second mixture for being mixed with ethyl acetate are added to the phenolic resin of formula ratio while stirring,
The crosslinking agent of formula ratio is added, continuation is stirred to react 0.5~1h at 70~80 DEG C, obtains the melting of modified polyurethane resin
Object；Wherein, the weight ratio of the ethyl acetate and the ethyl acetate for being added to the second mixture that are added to the first mixture is 3:1
~2；
(5) by the fusant of above-mentioned modified polyurethane resin by calendering formation machine calendering formation, then by changing after calendering
Property polyurethane resin it is cooling, obtain modified polyurethane resin membrane material；
Step 2: cladding pressure roller
(1) roller main body of the cast iron casting for cast at pressure roller is used；
(2) above-mentioned modified polyurethane resin membrane material is first coated in the circumferential lateral surface of the roller main body, and it is modified poly- to obtain first
Urethane resin layer then coats steel layer on the first modified polyurethane resin layer, finally coats again in the steel layer
One layer of above-mentioned modified polyurethane resin membrane material obtains the second modified polyurethane resin layer to get polyurethane pressure roller.
2. the preparation method of a kind of corrosion-resistant polyurethane pressure roller according to claim 1, it is characterized in that: the azo draws
Hair agent is the mixing of one or more of azodiisobutyronitrile, azobisisoheptonitrile and azo-bis-iso-dimethyl
Object.
3. the preparation method of a kind of corrosion-resistant polyurethane pressure roller according to claim 1, it is characterized in that: the inorganic mistake
Oxygen initiator is ammonium persulfate or potassium peroxydisulfate.
4. the preparation method of a kind of corrosion-resistant polyurethane pressure roller according to claim 1, it is characterized in that: the crosslinking agent
It is one of cumyl peroxide, -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl and tert-butyl peroxide or two
Kind or more mixture.
5. the preparation method of a kind of corrosion-resistant polyurethane pressure roller according to claim 1, it is characterized in that: described be rolled into
Type machine rolls the fusant of modified polyurethane resin at 40~50 DEG C.
6. the preparation method of a kind of corrosion-resistant polyurethane pressure roller according to claim 1, it is characterized in that: the second step
In, two symmetrical half tube bodies are first cast into using steel layer, then two symmetrical half tube bodies are respectively coated by described first
On modified polyurethane resin layer, thus the steel layer coated.
7. the preparation method of a kind of corrosion-resistant polyurethane pressure roller according to claim 1, it is characterized in that: described first changes
The thickness of property urethane resin layer is 5~10cm, and the thickness of the steel layer is 5~10cm, the second modified polyurethane tree
The thickness of rouge layer is 10~20cm.
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| CN201711386581.7A CN108316042B (en) | 2017-12-20 | 2017-12-20 | A kind of preparation method of corrosion-resistant polyurethane pressure roller |
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| CN201711386581.7A CN108316042B (en) | 2017-12-20 | 2017-12-20 | A kind of preparation method of corrosion-resistant polyurethane pressure roller |
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| CN108316042B true CN108316042B (en) | 2019-09-27 |
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| US5830537A (en) * | 1995-10-23 | 1998-11-03 | Valmet Corporation | Method for manufacturing a roll for use in the production of paper |
| CN101962920A (en) * | 2009-07-21 | 2011-02-02 | 市川株式会社 | Papermaking shoe press belt |
| CN102094351A (en) * | 2009-11-27 | 2011-06-15 | 市川株式会社 | Process belt for papermaking and method for making the same |
| CN101720370B (en) * | 2007-06-25 | 2012-01-25 | 市川株式会社 | Shoe press belt for paper making |
| CN102718942A (en) * | 2012-06-13 | 2012-10-10 | 华东理工大学 | Preparation of wear-resistant and yellowing-resistant polyurethane resin and application thereof |
| CN104245772A (en) * | 2012-02-13 | 2014-12-24 | 陶氏环球技术有限责任公司 | Elastomers for paper mill equipment |
| CN104334795A (en) * | 2012-04-06 | 2015-02-04 | 斯托·伍德沃德许可有限责任公司 | A hydrophobic and/or amphiphobic roll cover |
| CN105339546A (en) * | 2013-06-14 | 2016-02-17 | 株式会社市川 | Shoe press belt for papermaking |
-
2017
- 2017-12-20 CN CN201711386581.7A patent/CN108316042B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5830537A (en) * | 1995-10-23 | 1998-11-03 | Valmet Corporation | Method for manufacturing a roll for use in the production of paper |
| CN101720370B (en) * | 2007-06-25 | 2012-01-25 | 市川株式会社 | Shoe press belt for paper making |
| CN101962920A (en) * | 2009-07-21 | 2011-02-02 | 市川株式会社 | Papermaking shoe press belt |
| CN102094351A (en) * | 2009-11-27 | 2011-06-15 | 市川株式会社 | Process belt for papermaking and method for making the same |
| CN104245772A (en) * | 2012-02-13 | 2014-12-24 | 陶氏环球技术有限责任公司 | Elastomers for paper mill equipment |
| CN104334795A (en) * | 2012-04-06 | 2015-02-04 | 斯托·伍德沃德许可有限责任公司 | A hydrophobic and/or amphiphobic roll cover |
| CN102718942A (en) * | 2012-06-13 | 2012-10-10 | 华东理工大学 | Preparation of wear-resistant and yellowing-resistant polyurethane resin and application thereof |
| CN105339546A (en) * | 2013-06-14 | 2016-02-17 | 株式会社市川 | Shoe press belt for papermaking |
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| Publication number | Publication date |
|---|---|
| CN108316042A (en) | 2018-07-24 |
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