EP0617743B1 - Schmutzabweisendes monofilament fuer papiermaschinensiebe, verfahren zu dessen herstellung und verwendung - Google Patents
Schmutzabweisendes monofilament fuer papiermaschinensiebe, verfahren zu dessen herstellung und verwendung Download PDFInfo
- Publication number
- EP0617743B1 EP0617743B1 EP93917512A EP93917512A EP0617743B1 EP 0617743 B1 EP0617743 B1 EP 0617743B1 EP 93917512 A EP93917512 A EP 93917512A EP 93917512 A EP93917512 A EP 93917512A EP 0617743 B1 EP0617743 B1 EP 0617743B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- monofilament
- weight
- repellent
- copolymer
- polyethylene terephthalate
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2915—Rod, strand, filament or fiber including textile, cloth or fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/2964—Artificial fiber or filament
- Y10T428/2967—Synthetic resin or polymer
- Y10T428/2969—Polyamide, polyimide or polyester
Definitions
- the invention relates to a dirt-repellent Monofilament for paper machine screens with one Diameters from 0.2 to 0.7 mm, consisting of at least 85% by weight Polyethylene terephthalate with a viscosity index (V.I.) of at least 96 dl / g and a copolymer, process for the production and its use.
- V.I. Viscosity index
- Dirt-repellent properties for paper machine screens supposed to be wet pollution that too Resistance to hydrolysis presupposes to be understood.
- the Dirt repellency is supposed to serve the cleaning cycles extend a sieve, doing the cleaning work under a high pressure water jet and if necessary under Rubbing is done with a brush.
- Dirt-repellent monofilaments that work simultaneously hydrolysis should become technical Fabrics processed and especially in the dryer section used in a paper machine. Such dryer fabrics are Exposed to temperatures well over 100 ° C and moisture as well as when cleaning increased mechanical stress. Dirt-repellent polyester monofilaments have become not proven to be susceptible to hydrolysis.
- additives in the form of stabilizers was a achieved further improvement in hydrolysis resistance, which, however, for paper machine fabrics Dryer section still not enough.
- the increase the dirt-repellent properties were next to the Addition of additives also by suitable Spin finishes, filament finishing treatments as well Post-treatment on the tissue tried.
- Monofilaments were also made from the copolymer Ethylene tetrafluoroethylene produced, the thermal and chemical resistance are excellent and therefore in chemical process engineering. It dryer fabrics for paper machines are known, which on the Carry such monofilaments and the underlying support fabric made of polyester monofilaments protect against pollution.
- the excellent chemical properties of fluoropolymers however, their insufficient tensile strength and Stretch properties.
- EP-A-0 506 963 is a hydrolysis-stable and dirt-repellent Monofilament known, which consists of a mixture of a Polyethylene terephthalate with a fluoropolymer and unreacted carbodiimide consists. Cabodiimide is used in excess to the monofilament to make it resistant to hydrolysis in the long term. The monofilament is in its structure obviously not homogeneous.
- the fluorine-containing polymer can be in the form of fibrils be distributed in a matrix of PET, but also consist of a core sheath.
- the object of the invention is a dirt-repellent To provide monofilament that is high Claims of a technical fabric in relation to its chemical, dirt repellent, mechanical and abrasion-resistant properties are sufficient and special in the dryer section of a paper machine screen Is used.
- Another object of the invention is a method to provide that the economic Manufacture of dirt-repellent monofilaments allowed.
- the object is achieved in that the monofilament 1.5 to 5 wt .-% of a polynary Copolymers prepared from alkenes and perfluorate kenes, contains and one over the entire cross section has a homogeneous composition.
- a polyester is used that of at least 85% by weight of polyethylene terephthalate consists. It should be emphasized as a particular advantage that the manufactured monofilament over the entire cross-section has a homogeneous composition. It can If necessary, melt 1 to 3% of color pigments be added.
- the copolymers which have from 50 % By weight of ethene and about 50% by weight of tetrafluoroethene, proven.
- the copolymer can be in the form of a Masterbatch, which consists of approximately 50% by weight and approximately 50% by weight Copolymer exists, added to the melt become.
- the dirt-repellent monofilaments have a diameter of 0.2 to 0.7 mm, and consist of a polymer blend Polyethylene terephthalate with at least 85% by weight Polyethylene terephthalate units and 1.5 to 5% by weight, in particular 1.5 to 3.0% by weight of a polynary copolymer, made from alkenes and perfluoroalkenes, consist.
- Polynary copolymers have in particular proven binary systems. These are just through To obtain copolymerization of the individual components. Copolymers of ethene and tetrafluoroethene are due advantageous for their easy availability, being a Melting point in the range between 255 ° C and 275 ° C is particularly useful. Other binary or polynary Fluoroplastics such as modified hexafluoropropylene Polytetrafluorethylene, polyvinylidene fluoride and the like can be used.
- the monofilament is 1.5 up to 5% by weight of the copolymers mentioned Polyfluoroalkylene units, preferably 1.5 to 3% by weight, contains in particular 2 to 3 wt .-%.
- the strength of the monofilaments is higher than 36 cN / tex, in particular 36 to 60 cN / tex with an elongation of ⁇ 44 %, based on the unstretched filament, where as essential feature surprisingly the Dirt repellency is particularly good.
- the dirt repellent is as soiling index with ⁇ 2 after 5 soiling / washing cycles, compared to> 5 in one Polyester filament without copolymers was determined.
- the invention is based on an example and a Comparative example will be described in more detail.
- Hydrolysis-stabilized, highly viscous (VI 96) polyethylene terephthalate is in a known manner at a temperature of 290 ° C via a spinneret with a hole diameter of 1.8 mm with a throughput of 486 g / min melt extruded.
- the extruded monofilaments are cooled in a water bath at 70 ° C. After cooling the monofilaments are spin-treated and with a Draw ratio of 5.25x total, relaxed and at a speed of 100 m / min wound up.
- the resulting thread with a Diameter of 0.50 mm shows after 5 treatments has a soiling index of less than 2 ( ⁇ 2) a strength (Ft) of 37 cN / tex with an elongation (Dt) of 39% and a thermal shrinkage (TS at 160 ° C) of 0.4 %, based on the unshrunk thread.
- the AI values shown in Figure 1 show the influence of successive cycles "Soiling" R / "washing out” + W. There are AI mean values in each case of two cartels after soiling and shown after washing out.
- Curve 1 shows the monofilament thread according to the invention.
- Curve 2 shows a comparison thread made of polyester according to the Technology, i.e. without (II). After (five) 5 soiling / washing cycles are with the inventive Monofilament indexes reached below 2.
- the monofilament according to the invention brings Improvement by a factor of 4 to 5 compared to the status of the technique. It is preferred for use in Suitable for paper machine fabrics.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Paper (AREA)
- Woven Fabrics (AREA)
- Artificial Filaments (AREA)
Description
Claims (6)
- Schmutzabweisendes Monofilament für Papiermaschinensiebe mit einem Durchmesser von 0,2 bis 0,7 mm, bestehend aus einem Polyester unit wenigstens 85 Gew.-% Polyethylenterephthalat mit einem Viskositätsindex (V.I.) von wenigstens 96 dl/g und einem Copolymerisat, dadurch gekennzeichnet, dass das Monofilament 1,5 bis 5 Gew.-% eines polynären Copolymerisats, hergestellt aus Alkenen und Perfluoralkenen enthält und eine über den ganzen Querschnitt homogene Zusammensetzung aufweist.
- Monofilament nach Anspruch 1, dadurch gekennzeichnet, dass das Copolymerisat aus Ethen und Tetrafluorethen besteht.
- Monofilament nach Anspruch 1, dadurch gekennzeichnet, dass das Copolymerisat einen Schmelzpunkt von 255°C bis 275°C aufweist.
- Monofilamente nach den Ansprüchen 1 bis 3, gekennzeichnet durch eine Festigkeit von wenigstens 36 cN/tex, einer Dehnung von < 44 %, bezogen auf das ungedehnte Filament, und gleichzeitig einen Anschmutzungsindex < 2 nach 5 Anschmutzungs/Auswaschungszyklen.
- Verfahren zur Herstellung eines schmutzabweisenden Monofilaments für Papiermaschinensiebe mit einem Durchmesser von 0,2 bis 0,7 mm aus einer Polymerschmelze, bestehend aus einer Mischung aus einem Polyester unit wenigstens 85 Gew.-% Polyethylenterephthalat mit einem Viskositätsindex (V.I.) von wenigstens 96 dl/g und einem Copolymerisat, dadurch gekennzeichnet, dass der Polymerschmelze aus Polyethylenterephthalat, vor dem Extrudieren 1,5 bis 5 Gew.-% eines Copolymerisats, hergestellt aus Alkenen und Perfluoralkenen, zugemischt wird und das Monofilament eine über den ganzen Querschnitt homogene Zusammensetzung aufweist.
- Verwendung der schmutzabweisenden Monofilamente mit einem Durchmesser von 0,2 bis 0,7 mm, bestehend aus einer Polymermischung aus einem Polyester mit wenigstens 85 Gew.-% Polyethylenterephthalat mit einem Viskositätsindex (V.I.) von wenigstens 96 dl/g und 1,5 bis 5 Gew.-% eines polynären Copolymerisats aus Alkenen und Perfluoralkenen und eine über den ganzen Querschnitt homogene Zusammensetzung aufweist, zur Herstellung von Siebgeweben für von Papiermaschinen.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH273492 | 1992-09-01 | ||
CH273492 | 1992-09-01 | ||
CH2734/92 | 1992-09-01 | ||
PCT/CH1993/000206 WO1994005835A1 (de) | 1992-09-01 | 1993-08-17 | Schmutzabweisendes monofilament für papiermaschinensiebe, verfahren zu dessen herstellung und verwendung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0617743A1 EP0617743A1 (de) | 1994-10-05 |
EP0617743B1 true EP0617743B1 (de) | 1999-07-14 |
Family
ID=4240408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93917512A Expired - Lifetime EP0617743B1 (de) | 1992-09-01 | 1993-08-17 | Schmutzabweisendes monofilament fuer papiermaschinensiebe, verfahren zu dessen herstellung und verwendung |
Country Status (8)
Country | Link |
---|---|
US (2) | US5472780A (de) |
EP (1) | EP0617743B1 (de) |
JP (2) | JPH07500884A (de) |
AT (1) | ATE182185T1 (de) |
AU (1) | AU670313B2 (de) |
CA (1) | CA2122372C (de) |
DE (1) | DE59309695D1 (de) |
WO (1) | WO1994005835A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135982A2 (de) | 2008-06-18 | 2009-12-23 | Teijin Monofilament Germany Gmbh | Mit Perfluorpolyethern modifizierte Monofilamente |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0658222A1 (de) * | 1993-07-02 | 1995-06-21 | Rhone-Poulenc Viscosuisse Sa | Verfahren zur herstellung von schmutzabweisenden und abrasionsbeständigen monofilamenten und deren verwendung |
US5407736A (en) * | 1993-08-12 | 1995-04-18 | Shakespeare Company | Polyester monofilament and paper making fabrics having improved abrasion resistance |
US5804659A (en) * | 1996-12-18 | 1998-09-08 | Asten, Inc. | Processing of polyphthalamide monofilament |
US6136437A (en) * | 1997-10-07 | 2000-10-24 | Astenjohson, Inc. | Industrial fabric and yarn made from an improved fluoropolymer blend |
US6146462A (en) * | 1998-05-08 | 2000-11-14 | Astenjohnson, Inc. | Structures and components thereof having a desired surface characteristic together with methods and apparatuses for producing the same |
US20070173585A1 (en) * | 2004-12-22 | 2007-07-26 | Sevenich Gregory J | Polyester nanocomposite filaments and fiber |
DE102010015500A1 (de) | 2010-04-20 | 2011-10-20 | Teijin Monofilament Germany Gmbh | Monofilamente aus thermoplastischen Polymeren, deren Herstellung und Verwendung |
PL3359597T3 (pl) | 2015-10-05 | 2020-07-27 | Albany International Corp. | Kompozycje i sposoby do uzyskania ulepszonej odporności na ścieranie komponentów polimerowych |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1241168A (en) * | 1967-08-29 | 1971-07-28 | Ici Ltd | Polyethylene terephthalate moulding compositions |
US3723373A (en) * | 1971-10-04 | 1973-03-27 | American Cyanamid Co | 0.1% to about 2.0% by weight polytetrafluoroethylene emulsion modified polyethylene terephthalate with improved processing characteristics |
US4002581A (en) * | 1975-12-08 | 1977-01-11 | General Electric Company | Foamed thermoplastic compositions of a linear polyester and an ionically crosslinked copolymer |
DE3301270A1 (de) * | 1983-01-17 | 1984-07-19 | W.L.Gore & Co GmbH, 8011 Putzbrunn | Ummanteltes faser- bzw. filamentmaterial und verfahren zu seiner herstellung |
JPS6228822A (ja) * | 1985-07-31 | 1987-02-06 | Nec Corp | 電源制御装置 |
JPS62238822A (ja) * | 1986-04-07 | 1987-10-19 | Kanebo Ltd | 改質ポリエステル繊維 |
US4822454A (en) * | 1986-12-24 | 1989-04-18 | Albany International Corp. | Enhanced soil removal from paper machine forming fabrics |
EP0506983B1 (de) * | 1990-10-19 | 1999-06-16 | Toray Industries, Inc. | Polyester monofilament |
CA2087477A1 (en) * | 1992-02-03 | 1993-08-04 | Jennifer A. Gardner | High temperature copolyester monofilaments with enhanced knot tenacity for dryer fabrics |
-
1990
- 1990-08-17 US US08/240,664 patent/US5472780A/en not_active Expired - Fee Related
-
1993
- 1993-08-17 WO PCT/CH1993/000206 patent/WO1994005835A1/de active IP Right Grant
- 1993-08-17 CA CA002122372A patent/CA2122372C/en not_active Expired - Fee Related
- 1993-08-17 JP JP6506719A patent/JPH07500884A/ja active Pending
- 1993-08-17 EP EP93917512A patent/EP0617743B1/de not_active Expired - Lifetime
- 1993-08-17 AT AT93917512T patent/ATE182185T1/de not_active IP Right Cessation
- 1993-08-17 AU AU46967/93A patent/AU670313B2/en not_active Ceased
- 1993-08-17 DE DE59309695T patent/DE59309695D1/de not_active Expired - Fee Related
-
1995
- 1995-08-10 US US08/513,530 patent/US5514472A/en not_active Expired - Fee Related
-
2000
- 2000-03-17 JP JP2000001614U patent/JP2000000067U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135982A2 (de) | 2008-06-18 | 2009-12-23 | Teijin Monofilament Germany Gmbh | Mit Perfluorpolyethern modifizierte Monofilamente |
DE102008028617A1 (de) | 2008-06-18 | 2009-12-24 | Teijin Monofilament Germany Gmbh | Mit Perfluorpolyethern modifizierte Monofilamente |
Also Published As
Publication number | Publication date |
---|---|
EP0617743A1 (de) | 1994-10-05 |
ATE182185T1 (de) | 1999-07-15 |
DE59309695D1 (de) | 1999-08-19 |
JP2000000067U (ja) | 2000-09-29 |
CA2122372C (en) | 2003-03-25 |
JPH07500884A (ja) | 1995-01-26 |
AU4696793A (en) | 1994-03-29 |
WO1994005835A1 (de) | 1994-03-17 |
US5472780A (en) | 1995-12-05 |
US5514472A (en) | 1996-05-07 |
CA2122372A1 (en) | 1994-03-17 |
AU670313B2 (en) | 1996-07-11 |
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