WO2003000742A1 - Monofilament of polyamide, flat textile product and method for producing same - Google Patents
Monofilament of polyamide, flat textile product and method for producing same Download PDFInfo
- Publication number
- WO2003000742A1 WO2003000742A1 PCT/US2002/018896 US0218896W WO03000742A1 WO 2003000742 A1 WO2003000742 A1 WO 2003000742A1 US 0218896 W US0218896 W US 0218896W WO 03000742 A1 WO03000742 A1 WO 03000742A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- monofilament
- cross
- polyamide
- flat textile
- irradiation
- Prior art date
Links
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
- D01F6/90—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 polyamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/0027—Screen-cloths
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/08—Felts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/021—Moisture-responsive characteristics hydrophobic
Definitions
- the invention relates to a monofilament of polyamide, especially for flat textile products, for use in paper machines, for instance, as well as a flat textile product, a method for producing same and the use of a method for producing a flat textile product.
- flat products are used as paper machine covers, e.g., as press felts. Press felts are conducted with the still moist paper web or cellulose web over rolls and through a series of roll pairs and water is removed from the moist web during this passage.
- the press felt serves not only as a carrying surface for the moist web, but also to absorb the water pressed out of the web.
- the water accumulating in the conveyor belt-like press felt is removed by dewatering devices, positioned for instance at a point where the paper web is no longer in direct contact with the press felt.
- the paper web is transferred to a drying section where it is essentially subjected to thermal treatment, and is thereby further dewatered or dried.
- patent EP 0 784 107 A2 discloses a method for producing a monofilament which contains, in addition to the polyamide, also a maleic anhydride-modified polyethylene/polypropylene rubber at the rate of 1% to 30% by weight, and anti-aging stabilizers at the rate of up to 3% by weight. This is supposed to improve the abrasion resistance and form stability of the industrial use flat product.
- a cross-linked polyamide block polymer is known from the patents US-A 5,998,551 and JP-A 81 12 052.
- a method for producing very strong fibers is known from the patent US-A 4,853,164.
- a paper machine fabric made of polyethylene is known from US-A 4,421,819.
- a method for producing very strong polyethylene fibers is known from the patent US-A
- the objective of the present invention is to propose a monofilament of polyamide which features improved mechanical properties, especially with regard to abrasion, strength and proneness to splitting, but also with regard to the modification of properties over the course of time. It is also the objective of the invention to propose a flat textile product, especially a forming wire or press felt, for use in cellulose fiber preparation or paper production, for instance, and a method for producing such a flat textile product.
- the objective is attained by a monofilament of the type mentioned in the beginning, containing polyamide at the rate of 99.9% to 90% by weight, and a cross-linkage reinforcement agent at the rate of 0.1 % to 10% by weight, the polyamide being at least partially cross-linked.
- the polyamide is a meltable, spinnable, thread-forming polyamide.
- the invention provides that the cross-linkage of the monofilaments is not limited to their border regions, but extends across the entire cross-section of the monofilament. In this regard, it is advantageous if no core/mantle effects are observed, of the kind, for instance, that can occur as a result of chemical cross-linkage.
- the invention provides that the monofilament contains a crosslinkage reinforcement agent at the rate of 0.5% to 5% by weight and in particular preferably a cross-linkage reinforcement agent at the rate of 1% to 3% by weight.
- TAIC triallyl isocyanurate
- TAC can be used, for instance.
- TAIC can be purchased in the market under the name Beta Link Master' from a number of companies, among them Plastic Technology Service Marketing-undmaschines GmbH, Adelshofen.
- the invention provides that only a partial cross-linkage is effected, because a complete cross-linkage would cause the threads to become brittle.
- the invention also relates to a flat textile product, especially a forming wire or press felt, for use in cellulose fiber preparation or paper production, for instance, in which at least the warp threads consist of monofilaments having the properties described above.
- the warp thread which runs in the transverse direction in the finished, possibly endlessly woven felt, is responsible in particular for the dimensional stability of the fabric.
- the invention also relates to a method for producing flat textile products comprising monofilaments with the properties described above, in which the monofilament is extruded and subsequently drawn and woven, the monofilaments being mixed with a cross-linkage reinforcement agent prior to extrusion and irradiated with electron rays before and/or after the weaving process, by means of which the polyamides are partially cross-linked.
- the use of electron radiation to effect the cross-linkage entails the advantage that no core/mantle effects are produced, i.e., the monofilaments are cross-linked across their entire cross section and not only in the border region (mantle). The electron rays penetrate the entire monofilament, so that cross-linkage also occurs in the core region.
- the invention-specific monofilament was subjected to various different treatments, which are described below.
- the values of the first sample were recorded without activator and before irradiation
- the values of the first sample were recorded without activator and after irradiation.
- the values of the second sample were calculated with activator before irradiation
- the values of the second sample were calculated with activator after irradiation, all of which can be seen in Table 1.
- Table 1 makes it clear that the threads were not damaged by the irradiation.
- Figures 1 through 3 describe a further trial in which different polyamide samples were subjected to a hydrolysis test in an autoclave over a time period of 240 hours at 120°C in saturated steam.
- the tensile force reduction is a measure of chemical damage, caused for instance by longitudinal cracks or by deformation to a polygon.
- the shrinkages are less than in the samples without activator.
- the hygral expansion is unchanged and the diameter modification in the sample with activator is much less than in the sample without activator.
- the cracking resistance of the invention-specific monofilament declined much less sharply.
- the gradient is a measure of the damage to the monofilament.
- the gradient of cracking resistance change is less than in the known monofilaments. In this trial, 10 samples were produced of all materials. All samples were removed after 24 hours and tested for strength.
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02747898A EP1404721A4 (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
US10/479,125 US7001663B2 (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
KR10-2003-7016563A KR20040012948A (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
CA002450533A CA2450533A1 (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
BR0210511-0A BR0210511A (en) | 2001-06-21 | 2002-06-13 | Polyamide monofilament, plain textile product and process for its production |
NZ529998A NZ529998A (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
AU2002318345A AU2002318345B2 (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
MXPA03011732A MXPA03011732A (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same. |
JP2003507145A JP2004531657A (en) | 2001-06-21 | 2002-06-13 | Polyamide single fiber, plain woven product and method for producing the same |
NO20035709A NO20035709D0 (en) | 2001-06-21 | 2003-12-19 | Polyamide monofilament, flat textile product and process for making such |
US11/264,395 US20060121276A1 (en) | 2001-06-21 | 2005-11-01 | Monofilament of polyamide, flat textile product and method for producing same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10131729.8 | 2001-06-21 | ||
DE10131729A DE10131729A1 (en) | 2001-06-21 | 2001-06-21 | Monofilament made of polyamide, textile fabric and method for producing such |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/264,395 Division US20060121276A1 (en) | 2001-06-21 | 2005-11-01 | Monofilament of polyamide, flat textile product and method for producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003000742A1 true WO2003000742A1 (en) | 2003-01-03 |
Family
ID=7690135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/018896 WO2003000742A1 (en) | 2001-06-21 | 2002-06-13 | Monofilament of polyamide, flat textile product and method for producing same |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP1404721A4 (en) |
JP (1) | JP2004531657A (en) |
KR (1) | KR20040012948A (en) |
CN (1) | CN1285619C (en) |
AU (1) | AU2002318345B2 (en) |
BR (1) | BR0210511A (en) |
CA (1) | CA2450533A1 (en) |
DE (1) | DE10131729A1 (en) |
MX (1) | MXPA03011732A (en) |
NO (1) | NO20035709D0 (en) |
NZ (1) | NZ529998A (en) |
RU (1) | RU2003136274A (en) |
TW (1) | TWI243218B (en) |
WO (1) | WO2003000742A1 (en) |
ZA (1) | ZA200309429B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SI2230350T1 (en) * | 2009-03-18 | 2011-07-29 | Baumhueter Extrusion Gmbh | Polymer fiber, its use and process for its manufacture |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3930098A (en) * | 1972-05-24 | 1975-12-30 | Nitto Boseki Co Ltd | Method of molding fiber reinforced plastic flat plates |
US4072792A (en) * | 1973-05-21 | 1978-02-07 | Nitto Boseki Co., Ltd. | Fiber reinforced plastic flat plates |
US4348502A (en) * | 1981-01-23 | 1982-09-07 | Monsanto Company | Thermoplastic compositions of nylon and ethylene-vinyl acetate rubber |
US4421819A (en) * | 1982-02-23 | 1983-12-20 | Jwi Ltd. | Wear resistant paper machine fabric |
US4853164A (en) * | 1987-04-27 | 1989-08-01 | Raychem Corporation | Method of producing high strength fibers |
US5869180A (en) * | 1996-01-04 | 1999-02-09 | Buedenbender; Juergen | Melt-spun abrasion-resistant monofilaments |
US5998551A (en) * | 1997-06-02 | 1999-12-07 | Lawrence A. Acquarulo | Crosslinked nylon block copolymers |
US6189577B1 (en) * | 1990-06-06 | 2001-02-20 | Astenjohnson, Inc. | Papermakers fabric with stacked machine direction yarns |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5513742A (en) * | 1978-07-18 | 1980-01-30 | Teijin Ltd | Aromatic polyamide film and its production |
JPS6042254A (en) * | 1983-08-11 | 1985-03-06 | Sumitomo Electric Ind Ltd | Manufacture of optical fiber |
US4540597A (en) * | 1983-11-22 | 1985-09-10 | Sumitomo Electric Industries, Ltd. | Process for producing optical fiber for optical transmission |
JPH0826487B2 (en) * | 1985-04-01 | 1996-03-13 | レイケム・コ−ポレイション | High strength polymer fiber |
US6543177B1 (en) * | 1999-03-26 | 2003-04-08 | Atlantic Gillnet Supply, Inc. | Acoustically visible fishing net |
-
2001
- 2001-06-21 DE DE10131729A patent/DE10131729A1/en not_active Withdrawn
-
2002
- 2002-06-13 CA CA002450533A patent/CA2450533A1/en not_active Abandoned
- 2002-06-13 BR BR0210511-0A patent/BR0210511A/en not_active IP Right Cessation
- 2002-06-13 JP JP2003507145A patent/JP2004531657A/en active Pending
- 2002-06-13 CN CNB028121791A patent/CN1285619C/en not_active Expired - Fee Related
- 2002-06-13 NZ NZ529998A patent/NZ529998A/en unknown
- 2002-06-13 KR KR10-2003-7016563A patent/KR20040012948A/en not_active Application Discontinuation
- 2002-06-13 MX MXPA03011732A patent/MXPA03011732A/en not_active Application Discontinuation
- 2002-06-13 AU AU2002318345A patent/AU2002318345B2/en not_active Expired - Fee Related
- 2002-06-13 RU RU2003136274/04A patent/RU2003136274A/en not_active Application Discontinuation
- 2002-06-13 WO PCT/US2002/018896 patent/WO2003000742A1/en active IP Right Grant
- 2002-06-13 EP EP02747898A patent/EP1404721A4/en not_active Withdrawn
- 2002-06-20 TW TW091113532A patent/TWI243218B/en not_active IP Right Cessation
-
2003
- 2003-12-04 ZA ZA200309429A patent/ZA200309429B/en unknown
- 2003-12-19 NO NO20035709A patent/NO20035709D0/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3930098A (en) * | 1972-05-24 | 1975-12-30 | Nitto Boseki Co Ltd | Method of molding fiber reinforced plastic flat plates |
US4072792A (en) * | 1973-05-21 | 1978-02-07 | Nitto Boseki Co., Ltd. | Fiber reinforced plastic flat plates |
US4348502A (en) * | 1981-01-23 | 1982-09-07 | Monsanto Company | Thermoplastic compositions of nylon and ethylene-vinyl acetate rubber |
US4421819A (en) * | 1982-02-23 | 1983-12-20 | Jwi Ltd. | Wear resistant paper machine fabric |
US4853164A (en) * | 1987-04-27 | 1989-08-01 | Raychem Corporation | Method of producing high strength fibers |
US6189577B1 (en) * | 1990-06-06 | 2001-02-20 | Astenjohnson, Inc. | Papermakers fabric with stacked machine direction yarns |
US5869180A (en) * | 1996-01-04 | 1999-02-09 | Buedenbender; Juergen | Melt-spun abrasion-resistant monofilaments |
US5998551A (en) * | 1997-06-02 | 1999-12-07 | Lawrence A. Acquarulo | Crosslinked nylon block copolymers |
Non-Patent Citations (1)
Title |
---|
See also references of EP1404721A4 * |
Also Published As
Publication number | Publication date |
---|---|
MXPA03011732A (en) | 2005-07-25 |
DE10131729A1 (en) | 2003-01-09 |
EP1404721A1 (en) | 2004-04-07 |
ZA200309429B (en) | 2004-12-06 |
RU2003136274A (en) | 2005-05-20 |
NO20035709D0 (en) | 2003-12-19 |
AU2002318345B2 (en) | 2007-05-31 |
EP1404721A4 (en) | 2007-03-21 |
KR20040012948A (en) | 2004-02-11 |
NZ529998A (en) | 2005-05-27 |
JP2004531657A (en) | 2004-10-14 |
TWI243218B (en) | 2005-11-11 |
CN1285619C (en) | 2006-11-22 |
CN1516708A (en) | 2004-07-28 |
BR0210511A (en) | 2004-10-05 |
CA2450533A1 (en) | 2003-01-03 |
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