CA2170169A1 - Method of controlling the surface properties of surfaces in a paper machine, and use of the method in the surface treatment of surfaces in a paper machiner - Google Patents
Method of controlling the surface properties of surfaces in a paper machine, and use of the method in the surface treatment of surfaces in a paper machinerInfo
- Publication number
- CA2170169A1 CA2170169A1 CA002170169A CA2170169A CA2170169A1 CA 2170169 A1 CA2170169 A1 CA 2170169A1 CA 002170169 A CA002170169 A CA 002170169A CA 2170169 A CA2170169 A CA 2170169A CA 2170169 A1 CA2170169 A1 CA 2170169A1
- Authority
- CA
- Canada
- Prior art keywords
- surface treatment
- halogenated
- treatment compound
- resins
- liquid surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
Landscapes
- Paper (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polyethers (AREA)
Abstract
The present invention relates to a method of controlling the surface properties of surfaces in a paper machine by treating the surfaces with a surface treatment compound to achieve desired surface properties. According to the invention, the surfaces are treated with a liquid surface treatment compound whose characteristics are controlled by modifying the backbone polymer chain of the surface treatment compound advantageously by halogenated macrooligomers, diols, triols, thiols and/or other polyols. The invention also concerns the use of the method in the surface treatment of surfaces in a paper machine.
Description
- 217016g METHOD OF CONTROLLING THE SURFACE PROPERTIES OF
SURFACES lN A PAPER MACHlNE AND USE OF THE METHOD lN THE
SURFACE TREATMENT OF SURFACES IN A PAPER MACHINE
BACKGROUND OF THE INVENTlON
The present invention relates to a method of controlling the surface properties of surfaces in a paper m~r.hin~ by treating the surfaces with a surface treatment material to achieve desired surface properties.
Paper machines or similar equipment (including boxboard machines and pulp 5 sheeting/drying machines, for instance) and various paper finishing machines have a plurality of different surfaces on which special requirements are set with regard to their surface properties such as desired degree of friction, predetermined surface energy, self-cleaning property, good web separation properties and wear resistance. Surfaces typically prone to accumulate debris are, e.g., dryer cylinders, web guide rolls, sizing press rolls and their 10 surroun~ingc. Special surface property requirements (besides self-cleaning) are also placed on, e.g., the center rolls of the press sections, sizing press rolls, composite rolls, different glide surfaces, doctor blades, etc.
One of the specific areas considered problematic today is the porous facings of rolls and similar machine components. Such porous facings particularly include thermally-sprayed paper 15 machine roll facings which generally are made as ceramic, metal or cermet facings. Porosity is a factor affecting the facing-substrate combination and can impair its corrosion resistance, the wear resistance of the facing layer, the mechanical strength of the facing layer and the adhesion between the facing and the substrate material. The requirements set for, e.g., thermally-sprayed roll facings are widely varying. The facing must have good wear resistance, 20 high strength of facing, corrosion resistance, certain desirable friction qualities, debris repellent property, etc. However, a thermally-sprayed surface alone does not usually provide these characteristics or combinations thereof.
2170t6~
Rather, the surface properties must be modified as desired by various surface treatment compounds. For instance, the ceramic-covered center roll of the paper machine press section is assumed to permit the separation of the paper web from the roll surface as optimally as possible in terms of the paper-making process. To achieve the desired characteristics S particularly for such a porous facing, the facing must, in a great number of cases, be treated with a special sealant or surface treatment compound whose purpose is to modify and control the surface properties in the desired manner improving, e.g., its surface energy specification, debris repellent property or a similar characteristic.
The use of a surface treatment compound can vastly improve the surface properties. For 10 surface treatment of porous surfaces, such an organic liquid compound with suitable viscosity has been used that can be impregnated into the pores of the facing and then cured by a suitable method after the impregnation step. Conventionally, the organic surface treatment compounds have been selected from the group cont~ining, e.g., different polymers such as epoxy resins, phenol resins, polyester resins, vinyl ester resins, various types of organic waxes and similar 15 compounds. The processing temperature of such surface treatment compounds is typically in the order of 80-100 C. However, surface treatment compounds do not always function in the desired fashion. Therefore, a need has arisen to modify the properties of the surface treatment compound in a desired fashion. For instance, the conventional organic sealant compounds used in surface treatment compounds have been found to increase, among other things, the adherence 20 of the web on the surface of a sealed roll and to increase the wear of doctor blades as compared with a roll whose surface has not been sealed nor subjected to surface treatment. A factor contributing to this has been the sealing of the roll surface pores caused by the surface treatment compound. Then, the sealing of the roll surface alters the thickness of the moisture layer rem~ining between the web and the roll surface, whereby the separation of the web from the 25 roll surface is impaired.
217016~
.... .... . . . ..
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a novel method of controlling the surface properties of surfaces in a paper machine.
It is a further object of the present invention to modify surface treatment compound characteristics so as to achieve a desired effect. To this end, the invention is principally characterized in that the surfaces are treated with a liquid surface treatment compound whose characteristics are controlled by modifying the backbone polymer chain of the surface treatment compound by halogenated macrooligomers, diols, triols, thiols and/or other polyols.
The invention offers si~nifi~nt benefits over conventional methods particularly in situations in which it is desirable to avoid soiling of surfaces, or the adherence of debris on surfaces. Other advantages include improving and aiding the flow of fluids along surfaces and/or improving the separation of a paper web or similar material from a surface, particularly from the surface of a roll. Particularly in such rolls or similar surfaces covered by a porous facing, the treatment according to the invention with a surface treatment compound also improves the strength and corrosion resistance properties of the facing.
In the method of the invention, the surface treatment compound has a general corrosion resistance improving effect in cases where the surface treatment compound is applied directly onto a metal surface. Such metal surface objects include the flow surfaces of headboxes, pipings and similar machine elements. Also the treatment of, e.g., metal-faced rolls and cylinders, and composite-material rolls with the surface treatment compound of the inventioll can reduce the surface energy of such rolls, thus improving the separation of the web from the roll. A
composite roll is fabricated from, e.g., carbon fiber and epoxy resin using, e.g., filament winding techniques. It is an extremely light, yet sufficiently strong and stiff roll for paper machines. Such rolls are presently used, for example, as a web tension measuring roll whose surface is required to stay free of debris and possess good web separation properties. Otller benefits and characteristics of the present invention will be evident from the exemplifying embodiments of the invention described in greater detail below.
217016~
~ ..
DETAn ~n DESCRIPTION OF THE INVENTION
The surface energy and chemically reactive groups of a surface treatment compound such as a sealant compound intended for sealing porous facings have a crucial effect on, among other 5 things, the adherence of paper web to the surface treatment compound. If the surface energy of a solidified surface treatment compound or similar sealant can be lowered, the adhesion work required to separate the web from the surface treatment compound decreases, whereby the separation of the web from the roll surface is eased. Simultaneously, the probability of the formation of hydrogen bonds between the roll surface and the web is reduced. This example 10 is given here to elucidate the factors related to roll facings and their treatment with surface treatment compounds. A feasible method of reducing the surface energy of a surface treatment compound is to artificially add halogen atoms to the polymer structure of the surface treatment compou~d. Halogen atoms in the polymer structure have an extremely electronegative role and thus can lower the surface energy. As a result, in the rolls the adherence of the web to the roll 15 surface is reduced. In this text, the term halogen particularly refers to fluorine, although other halogens such as iodine or bromine, for instance, can be used.
In conventional methods halogens or halogen compounds are introduced into the surface treatment compound in the form of discrete particles having a particle size sufficiently small with regard to, e.g., the pore size of a porous facing. When the halogen species used is 20 fluorine, for instance, it is embedded in the surface treatment compound as separate particles of a fluorinated polymer. However, such a particle compounding method has several shortcomings. First, the particles separate in the liquid polymer phase. Second, desired efrect on the properties of the surface treatment compound camlot be obtained even at elevated particle concentrations. Third, compounding with particles also increases the viscosity of the liquid 25 polymer resulting in inferior impregnation of the facing pores by the particles, for example.
Lastly, compounding with particles may impair the mechanical properties of the surface treatment compound.
The goal of the invention is achieved by modifying the chemical structure of the surface treatment compound by, e.g., halogenated macrooligomers, halogenated diols, halogenated 30 triols, halogenated thiols and/or other halogenated polyols. Accordingly, if the halogell is 2170~9 ... . .. ..
fluorine, the chemical structure of a liquid organic surface treatment compound, for instance, can be modified by adding fluorinated macrooligomers or diols to the backbone polymer of the treatment compound. Problems involved with particle compounding can be avoided througll tllc use fluorinated compounds, whereby also significant improvements are achieved in the S properties of the surface treatment compound.
In the case the halogen species are brought into backbone of the surface treatment compound in the form of separate halogenated (e.g., fluorinated) polymer particles, they can be either in the dry form of separate particles or dispersed in a liquid carrier of low surface energy, whereby the particles are blended in the carrier medium with the surface treatment 10 compound. The carrier can be a hydrocarbon or similar compound suited for the purpose. Prior to the curing of the surface treatment compound, the carrier is removed by a suitable heat treatment. By varying the amount of particles embedded in the surface treatment compound matrix, the adhesion characteristics of the surface with, e.g., a paper web can be modified.
However, a problem arises from the addition of halogenated particles in the surface treatment 15 compound matrix. Namely, the particles tend to enrich on the thin top layer of the facing, whereby a majority of the particles will be ground away if the facing need to be finished by sanding. Here, a significant portion of the advantageous web release property of the halogenated (fluorinated) polymer particles will be lost. Moreover, the amount of halogenated particles in the surface treatment compound must be relatively high, whereby the surface treatment 20 compound becomes balsam-like and its penetration into the facing pores is hindered in situations where the surface treatment compound is used for sealing the pores of a facing.
As mentioned above, the chemical structure of the surface treatment compound canby altered by modifying the backbone polymer chain by, e.g., halogenated macrooligomers, diols or the like. For instance, if the surface treatment compound is intended for sealing a 25 porous facing and when the surface treatment compound used is an epoxy resin-based surface treatment compound, the modification of such an epoxy-resin based surface treatment compound by fluorinated macrooligomers is based on the reaction of reactive (mono- or bifunctional) ends of the polymer chain of fluorinated macrooligomers witll the epoxy group of the resin. As noted above, fluorine is mentioned as only an advantageous 30 alternative of the available halogens. Other usable halogens are iodine and bromine, for 21~16~
. . . .
instance. Further, the surface treatment compound need not be limited to an epoxy resin or an epoxy-resin-based surface treatment compound alone, but rather, almost any thermosetting or thermoplastic polymer can be used in the surface treatment compound.
Examples of suitable base materials for the surface treatment compound include epoxy S resins, phenolic resins, polyester resins, vinylester resins, acrylate resins, methacrylate resins, organic waxes and similar compounds, and copolymers and terpolymers of these. In the exemplifying embodiment the macrooligomers usually exhibit poor solubility in the epoxy matrix, whereby the oligomers are initially converted into so-called adducts with different anhydrides, and then actual prepolymers are made from the adducts through a 10 chain extension reaction. These prepolymers exhibit good solubility in the base epoxy matrix and are capable of reacting with the epoxy groups of the resin. Hence, the base resins can be cured into solid, homogeneous structures having a predetermined/desired content of fluorine atoms. The fluorine atoms may occur in the form of different CFX groups in the linear part of the polymer chain, or alternatively, as side groups. Then, the surface energy 15 of the facing drops to a value of 15-20 mN/m.
The surface treatment compound may also include inorganic surface treatment compounds of suitable viscosity such as phosphates and silicates, for instance.
The above-described exemplifying embodiment is particularly suited for use of the surface treatment compound as the sealant of a porous roll facing. This is because the 20 surface energy of fluorine-modified surface treatment compound is lower, whereby tlle adhesion work holding the web against the roll surface decreases and the separation of the web from the roll surface is eased. Additionally, the corrosion tolerance, heat resistance and mechanical properties of lnodified epoxy-based sealant compounds are improved. While the above-described exemplifying embodiments are related to the use of fluorine and fluorinated 25 macrooligomers or diols, a final note must be made that fluorine can be replaced by other halogenated compounds including at least those of iodine and bromine. Moreover, epoxy resin as the base polymer matrix can be replaced by any other polymer whose halogenation results in structures of lower surface energy. Such alternative base polymers are listed in the description of the invention above.
~ .. . ...
For those versed in the art it is obvious that the invention is not limited by the exemplifying embodiments described above, but rather, can be varied within the scope and inventive spirit of the annexed claims.
SURFACES lN A PAPER MACHlNE AND USE OF THE METHOD lN THE
SURFACE TREATMENT OF SURFACES IN A PAPER MACHINE
BACKGROUND OF THE INVENTlON
The present invention relates to a method of controlling the surface properties of surfaces in a paper m~r.hin~ by treating the surfaces with a surface treatment material to achieve desired surface properties.
Paper machines or similar equipment (including boxboard machines and pulp 5 sheeting/drying machines, for instance) and various paper finishing machines have a plurality of different surfaces on which special requirements are set with regard to their surface properties such as desired degree of friction, predetermined surface energy, self-cleaning property, good web separation properties and wear resistance. Surfaces typically prone to accumulate debris are, e.g., dryer cylinders, web guide rolls, sizing press rolls and their 10 surroun~ingc. Special surface property requirements (besides self-cleaning) are also placed on, e.g., the center rolls of the press sections, sizing press rolls, composite rolls, different glide surfaces, doctor blades, etc.
One of the specific areas considered problematic today is the porous facings of rolls and similar machine components. Such porous facings particularly include thermally-sprayed paper 15 machine roll facings which generally are made as ceramic, metal or cermet facings. Porosity is a factor affecting the facing-substrate combination and can impair its corrosion resistance, the wear resistance of the facing layer, the mechanical strength of the facing layer and the adhesion between the facing and the substrate material. The requirements set for, e.g., thermally-sprayed roll facings are widely varying. The facing must have good wear resistance, 20 high strength of facing, corrosion resistance, certain desirable friction qualities, debris repellent property, etc. However, a thermally-sprayed surface alone does not usually provide these characteristics or combinations thereof.
2170t6~
Rather, the surface properties must be modified as desired by various surface treatment compounds. For instance, the ceramic-covered center roll of the paper machine press section is assumed to permit the separation of the paper web from the roll surface as optimally as possible in terms of the paper-making process. To achieve the desired characteristics S particularly for such a porous facing, the facing must, in a great number of cases, be treated with a special sealant or surface treatment compound whose purpose is to modify and control the surface properties in the desired manner improving, e.g., its surface energy specification, debris repellent property or a similar characteristic.
The use of a surface treatment compound can vastly improve the surface properties. For 10 surface treatment of porous surfaces, such an organic liquid compound with suitable viscosity has been used that can be impregnated into the pores of the facing and then cured by a suitable method after the impregnation step. Conventionally, the organic surface treatment compounds have been selected from the group cont~ining, e.g., different polymers such as epoxy resins, phenol resins, polyester resins, vinyl ester resins, various types of organic waxes and similar 15 compounds. The processing temperature of such surface treatment compounds is typically in the order of 80-100 C. However, surface treatment compounds do not always function in the desired fashion. Therefore, a need has arisen to modify the properties of the surface treatment compound in a desired fashion. For instance, the conventional organic sealant compounds used in surface treatment compounds have been found to increase, among other things, the adherence 20 of the web on the surface of a sealed roll and to increase the wear of doctor blades as compared with a roll whose surface has not been sealed nor subjected to surface treatment. A factor contributing to this has been the sealing of the roll surface pores caused by the surface treatment compound. Then, the sealing of the roll surface alters the thickness of the moisture layer rem~ining between the web and the roll surface, whereby the separation of the web from the 25 roll surface is impaired.
217016~
.... .... . . . ..
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a novel method of controlling the surface properties of surfaces in a paper machine.
It is a further object of the present invention to modify surface treatment compound characteristics so as to achieve a desired effect. To this end, the invention is principally characterized in that the surfaces are treated with a liquid surface treatment compound whose characteristics are controlled by modifying the backbone polymer chain of the surface treatment compound by halogenated macrooligomers, diols, triols, thiols and/or other polyols.
The invention offers si~nifi~nt benefits over conventional methods particularly in situations in which it is desirable to avoid soiling of surfaces, or the adherence of debris on surfaces. Other advantages include improving and aiding the flow of fluids along surfaces and/or improving the separation of a paper web or similar material from a surface, particularly from the surface of a roll. Particularly in such rolls or similar surfaces covered by a porous facing, the treatment according to the invention with a surface treatment compound also improves the strength and corrosion resistance properties of the facing.
In the method of the invention, the surface treatment compound has a general corrosion resistance improving effect in cases where the surface treatment compound is applied directly onto a metal surface. Such metal surface objects include the flow surfaces of headboxes, pipings and similar machine elements. Also the treatment of, e.g., metal-faced rolls and cylinders, and composite-material rolls with the surface treatment compound of the inventioll can reduce the surface energy of such rolls, thus improving the separation of the web from the roll. A
composite roll is fabricated from, e.g., carbon fiber and epoxy resin using, e.g., filament winding techniques. It is an extremely light, yet sufficiently strong and stiff roll for paper machines. Such rolls are presently used, for example, as a web tension measuring roll whose surface is required to stay free of debris and possess good web separation properties. Otller benefits and characteristics of the present invention will be evident from the exemplifying embodiments of the invention described in greater detail below.
217016~
~ ..
DETAn ~n DESCRIPTION OF THE INVENTION
The surface energy and chemically reactive groups of a surface treatment compound such as a sealant compound intended for sealing porous facings have a crucial effect on, among other 5 things, the adherence of paper web to the surface treatment compound. If the surface energy of a solidified surface treatment compound or similar sealant can be lowered, the adhesion work required to separate the web from the surface treatment compound decreases, whereby the separation of the web from the roll surface is eased. Simultaneously, the probability of the formation of hydrogen bonds between the roll surface and the web is reduced. This example 10 is given here to elucidate the factors related to roll facings and their treatment with surface treatment compounds. A feasible method of reducing the surface energy of a surface treatment compound is to artificially add halogen atoms to the polymer structure of the surface treatment compou~d. Halogen atoms in the polymer structure have an extremely electronegative role and thus can lower the surface energy. As a result, in the rolls the adherence of the web to the roll 15 surface is reduced. In this text, the term halogen particularly refers to fluorine, although other halogens such as iodine or bromine, for instance, can be used.
In conventional methods halogens or halogen compounds are introduced into the surface treatment compound in the form of discrete particles having a particle size sufficiently small with regard to, e.g., the pore size of a porous facing. When the halogen species used is 20 fluorine, for instance, it is embedded in the surface treatment compound as separate particles of a fluorinated polymer. However, such a particle compounding method has several shortcomings. First, the particles separate in the liquid polymer phase. Second, desired efrect on the properties of the surface treatment compound camlot be obtained even at elevated particle concentrations. Third, compounding with particles also increases the viscosity of the liquid 25 polymer resulting in inferior impregnation of the facing pores by the particles, for example.
Lastly, compounding with particles may impair the mechanical properties of the surface treatment compound.
The goal of the invention is achieved by modifying the chemical structure of the surface treatment compound by, e.g., halogenated macrooligomers, halogenated diols, halogenated 30 triols, halogenated thiols and/or other halogenated polyols. Accordingly, if the halogell is 2170~9 ... . .. ..
fluorine, the chemical structure of a liquid organic surface treatment compound, for instance, can be modified by adding fluorinated macrooligomers or diols to the backbone polymer of the treatment compound. Problems involved with particle compounding can be avoided througll tllc use fluorinated compounds, whereby also significant improvements are achieved in the S properties of the surface treatment compound.
In the case the halogen species are brought into backbone of the surface treatment compound in the form of separate halogenated (e.g., fluorinated) polymer particles, they can be either in the dry form of separate particles or dispersed in a liquid carrier of low surface energy, whereby the particles are blended in the carrier medium with the surface treatment 10 compound. The carrier can be a hydrocarbon or similar compound suited for the purpose. Prior to the curing of the surface treatment compound, the carrier is removed by a suitable heat treatment. By varying the amount of particles embedded in the surface treatment compound matrix, the adhesion characteristics of the surface with, e.g., a paper web can be modified.
However, a problem arises from the addition of halogenated particles in the surface treatment 15 compound matrix. Namely, the particles tend to enrich on the thin top layer of the facing, whereby a majority of the particles will be ground away if the facing need to be finished by sanding. Here, a significant portion of the advantageous web release property of the halogenated (fluorinated) polymer particles will be lost. Moreover, the amount of halogenated particles in the surface treatment compound must be relatively high, whereby the surface treatment 20 compound becomes balsam-like and its penetration into the facing pores is hindered in situations where the surface treatment compound is used for sealing the pores of a facing.
As mentioned above, the chemical structure of the surface treatment compound canby altered by modifying the backbone polymer chain by, e.g., halogenated macrooligomers, diols or the like. For instance, if the surface treatment compound is intended for sealing a 25 porous facing and when the surface treatment compound used is an epoxy resin-based surface treatment compound, the modification of such an epoxy-resin based surface treatment compound by fluorinated macrooligomers is based on the reaction of reactive (mono- or bifunctional) ends of the polymer chain of fluorinated macrooligomers witll the epoxy group of the resin. As noted above, fluorine is mentioned as only an advantageous 30 alternative of the available halogens. Other usable halogens are iodine and bromine, for 21~16~
. . . .
instance. Further, the surface treatment compound need not be limited to an epoxy resin or an epoxy-resin-based surface treatment compound alone, but rather, almost any thermosetting or thermoplastic polymer can be used in the surface treatment compound.
Examples of suitable base materials for the surface treatment compound include epoxy S resins, phenolic resins, polyester resins, vinylester resins, acrylate resins, methacrylate resins, organic waxes and similar compounds, and copolymers and terpolymers of these. In the exemplifying embodiment the macrooligomers usually exhibit poor solubility in the epoxy matrix, whereby the oligomers are initially converted into so-called adducts with different anhydrides, and then actual prepolymers are made from the adducts through a 10 chain extension reaction. These prepolymers exhibit good solubility in the base epoxy matrix and are capable of reacting with the epoxy groups of the resin. Hence, the base resins can be cured into solid, homogeneous structures having a predetermined/desired content of fluorine atoms. The fluorine atoms may occur in the form of different CFX groups in the linear part of the polymer chain, or alternatively, as side groups. Then, the surface energy 15 of the facing drops to a value of 15-20 mN/m.
The surface treatment compound may also include inorganic surface treatment compounds of suitable viscosity such as phosphates and silicates, for instance.
The above-described exemplifying embodiment is particularly suited for use of the surface treatment compound as the sealant of a porous roll facing. This is because the 20 surface energy of fluorine-modified surface treatment compound is lower, whereby tlle adhesion work holding the web against the roll surface decreases and the separation of the web from the roll surface is eased. Additionally, the corrosion tolerance, heat resistance and mechanical properties of lnodified epoxy-based sealant compounds are improved. While the above-described exemplifying embodiments are related to the use of fluorine and fluorinated 25 macrooligomers or diols, a final note must be made that fluorine can be replaced by other halogenated compounds including at least those of iodine and bromine. Moreover, epoxy resin as the base polymer matrix can be replaced by any other polymer whose halogenation results in structures of lower surface energy. Such alternative base polymers are listed in the description of the invention above.
~ .. . ...
For those versed in the art it is obvious that the invention is not limited by the exemplifying embodiments described above, but rather, can be varied within the scope and inventive spirit of the annexed claims.
Claims (14)
1. A method of controlling the surface properties of surfaces in a paper machine, comprising treating said surfaces with a liquid surface treatment compound comprising a backbone polymer chain modified by a member of the group consisting of halogenated macrooligomers, halogenated diols, halogenated triols, halogenated thiols, halogenated polyols and mixtures thereof.
2. The method of claim 1, wherein said surface treatment compound further comprises a thermosetting polymer.
3. The method of claim 1, wherein said surface treatment compound further comprises a matrix polymer selected from the group consisting of epoxy resins, phenolic resins, polyester resins, vinylester resins, acrylate resins, methacrylate resins, organic waxes, copolymers of the foregoing, terpolymers of the foregoing and mixtures thereof.
4. The method of claim 1, wherein said surface treatment compound further comprises a thermoplastic polymer.
5. The method of claim 1, wherein said surface treatment compound further comprises an inorganic compound selected from the group consisting of phosphates, silicates and mixtures thereof.
6. The method of claim 1, wherein the halogen of said halogenated member is fluorine.
7. The method of claim 1, wherein the halogen of said halogenated member is iodine.
8. The method of claim 1, wherein the halogen of said halogenated member is bromine.
9. The method of claim 1, wherein said liquid surface treatment compound is applied to the surfaces of paper machine rolls.
10. The method of claim 1, wherein said liquid surface treatment compound is applied to a paper machine roll covered with a porous facing.
11. The method of claim 1, wherein said liquid surface treatment compound is applied to a composite roll.
12. The method of claim 1, wherein said liquid surface treatment compound is applied to the flow surfaces in a paper machine.
13. The method of claim 1, wherein said liquid surface treatment compound is applied to easily soiled surfaces.
14. A liquid surface treatment compound comprising a polymer chain backbone modified by a member of the group consisting of halogenated macrooligomers, halogenated diols, halogenated triols, halogenated thiols, halogenated polyols and mixtures thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI950849 | 1995-02-24 | ||
| FI950849A FI950849A (en) | 1995-02-24 | 1995-02-24 | Method for controlling the surface properties of paper machine surfaces and application of the method for surface treatment of paper machine surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2170169A1 true CA2170169A1 (en) | 1996-08-25 |
Family
ID=8542923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002170169A Abandoned CA2170169A1 (en) | 1995-02-24 | 1996-02-23 | Method of controlling the surface properties of surfaces in a paper machine, and use of the method in the surface treatment of surfaces in a paper machiner |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0728866B1 (en) |
| JP (1) | JPH08325974A (en) |
| KR (1) | KR960031561A (en) |
| AT (1) | ATE206176T1 (en) |
| CA (1) | CA2170169A1 (en) |
| DE (1) | DE69615427T2 (en) |
| FI (1) | FI950849A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6423185B1 (en) | 1998-03-03 | 2002-07-23 | Metso Paper, Inc. | Process of surface treatment for faces that become contaminated in a paper or board machine |
| FI20002122A (en) * | 2000-06-02 | 2001-12-03 | Metso Paper Inc | Arrangements to improve the beginning of the drying section |
| FI20085084L (en) | 2008-01-31 | 2009-08-01 | Metso Paper Inc | A method for coating the machine body of a fiber web machine and the coated machine body of a fiber web machine |
| JP2019035163A (en) * | 2017-08-15 | 2019-03-07 | 三菱製紙株式会社 | Production method of carbon staple fiber nonwoven fabric |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2539252B2 (en) * | 1988-07-08 | 1996-10-02 | 出光石油化学株式会社 | Roll |
| DE69119690T2 (en) * | 1990-10-08 | 1996-10-02 | Yamauchi Corp | Press roll for paper machines |
| JP3086002B2 (en) * | 1991-04-25 | 2000-09-11 | 出光石油化学株式会社 | Polyurethane composition or polyurethane-urea composition and coated roll using the same |
| FI92734C (en) * | 1993-02-11 | 1994-12-27 | Valmet Paper Machinery Inc | Method of coating a roll in a paper machine and a coated roll in a paper machine |
-
1995
- 1995-02-24 FI FI950849A patent/FI950849A/en not_active Application Discontinuation
-
1996
- 1996-01-24 DE DE69615427T patent/DE69615427T2/en not_active Expired - Fee Related
- 1996-01-24 EP EP96100981A patent/EP0728866B1/en not_active Expired - Lifetime
- 1996-01-24 AT AT96100981T patent/ATE206176T1/en not_active IP Right Cessation
- 1996-02-23 CA CA002170169A patent/CA2170169A1/en not_active Abandoned
- 1996-02-23 JP JP8060378A patent/JPH08325974A/en not_active Withdrawn
- 1996-02-24 KR KR1019960004533A patent/KR960031561A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FI950849A0 (en) | 1995-02-24 |
| EP0728866A3 (en) | 1998-01-21 |
| EP0728866A2 (en) | 1996-08-28 |
| KR960031561A (en) | 1996-09-17 |
| DE69615427D1 (en) | 2001-10-31 |
| EP0728866B1 (en) | 2001-09-26 |
| JPH08325974A (en) | 1996-12-10 |
| DE69615427T2 (en) | 2002-04-18 |
| FI950849A (en) | 1996-08-25 |
| ATE206176T1 (en) | 2001-10-15 |
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