EP2041345B1 - Non-tisse utilise comme chiffon d'essuyage, son procede et son installation de production - Google Patents

Non-tisse utilise comme chiffon d'essuyage, son procede et son installation de production Download PDF

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Publication number
EP2041345B1
EP2041345B1 EP07803800A EP07803800A EP2041345B1 EP 2041345 B1 EP2041345 B1 EP 2041345B1 EP 07803800 A EP07803800 A EP 07803800A EP 07803800 A EP07803800 A EP 07803800A EP 2041345 B1 EP2041345 B1 EP 2041345B1
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EP
European Patent Office
Prior art keywords
nonwoven
jets
structures
row
straight line
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.)
Active
Application number
EP07803800A
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German (de)
English (en)
French (fr)
Other versions
EP2041345A2 (fr
Inventor
Frédéric NOELLE
Said Serbi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Perfojet SAS
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Rieter Perfojet SAS
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Publication date
Application filed by Rieter Perfojet SAS filed Critical Rieter Perfojet SAS
Priority to PL07803800T priority Critical patent/PL2041345T3/pl
Publication of EP2041345A2 publication Critical patent/EP2041345A2/fr
Application granted granted Critical
Publication of EP2041345B1 publication Critical patent/EP2041345B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture

Definitions

  • the present invention relates to nonwovens having outstanding electrostatic characteristics, to their methods of manufacture and to their use as dry wiping cloths.
  • nonwovens used as wiping cloths having complex structures for example at least one web of continuous filaments hydroentangled with a sheet of thermoplastic staple fibers.
  • This nonwoven has a high mechanical strength thanks to the properties of the filament layers incorporated.
  • these nonwovens subject to corona discharge have a reduced decline in surface potential over time, which explains their good electrostatic quality and their use as wiping cloth ( EP 1 275 764 ).
  • the invention therefore relates to the use of a polypropylene filament spunbond nonwoven structured with structures of 1 to 3 mm in diameter at a structuring rate indicative of the ratio of the structured surface area to the total area of 20. at 60%, the interval between the structures, defined by the distance between the centers of the structures, being between 3 and 5 mm as wiping cloth.
  • the nonwoven has a tensile strength in a first direction, namely the machine direction, preferably between 100 and 150 N / 50 mm. between 110 and 130 N / 50 mm and in a second direction perpendicular to the first direction, therefore the cross direction, between 80 and 120 N / 50 mm, preferably between 90 and 110 N / 50 mm.
  • the nonwoven has an elongation of 80 to 140% / 10 N.
  • the nonwoven has a surface potential decline between 100 and 150 V in 600 seconds.
  • the filaments preferably have a denier of between 1.8 and 2 and 2.2 and more preferably between 1.9 and 2.1.
  • the nonwoven has a basis weight of 30 to 60 g / m 2 and in particular 40 to 50 g / m 2 .
  • the structures are openings.
  • the invention also relates to an installation comprising a spunbond tower, the bundle of filaments being extruded, stretched and deposited on a conveyor belt, sending a sheet to a consolidation device by jets of water projected on one of the faces of the web to obtain a consolidated web itself sent to a structuring device, including an adjoining device, by jets of water.
  • the structuring device is arranged to project jets on the other side of the consolidated sheet and comprises three rows of jets with a diameter of 100 to 140 ⁇ m, preferably 110 to 130 ⁇ m, the intervals between the outlets of the jets in the same row being between 0.5 and 1.5 mm, the distance between the straight line passing through the centers of the outlets of a row and the line passing through those of a neighboring row being between 0.25 and 1.2 mm and the distance between the perpendicular to said straight line of a row passing through one of its orifices and perpendicular to said straight line of a neighboring row passing through the orifice closest to said orifice is between 0.25 and 0.75 mm.
  • the nonwoven thus obtained is dried in a through air oven and is received on a winding device.
  • the rate of passage of the nonwoven in the installation mainly in front of the adjoining station is between 20 and 60 m per minute, preferably between 20 and 50 m per minute. Too high a speed can prevent getting the openings.
  • the invention finally relates to a nonwoven as defined for the nonwoven used as a dry cleaning cloth according to the invention.
  • the openings are preferably free of filaments passing therethrough.
  • the gaps between the openings are free of loop surface formed of filament.
  • a nonwoven By operating, preferably, by the method and on the installation defined above, a nonwoven is obtained which, unexpectedly, has all the qualities required to constitute a good wiping cloth and which, in particular , has a sufficiently slow surface potential decline, so that it retains its dust and wire collection properties electrostatically for as long as possible, properties that are conferred on it by the simple friction implemented during the wiping operation. Unevenly, the unevenness caused by the openings does not make it difficult for the wiping cloth to pass over the surface to be wiped, especially when the solid parts of the nonwoven have no longer any hooking loops or other hair and the enhancements improve the process of potential decline. In this respect, a perforated cloth is more effective than a plain surface cloth.
  • the invention also relates to a wiping process which consists in wiping a surface with the aid of a nonwoven according to the invention.
  • the wiper according to the invention can be used, in particular, for dry wiping of all surfaces, in particular metal, plastic, ceramic, glass, fabric, as follows:
  • the cloth is held in one hand and applied to the surface to be cleaned with either straight or small circles.
  • the sample is conditioned for 24 hours and the test is carried out at 23 ° C. and a relative humidity of 50%.
  • the thickness of the nonwoven is measured by measuring the distance between a reference plate on which the nonwoven is based and a parallel pressure plate which applies a precise pressure to the surface under test.
  • the apparatus consists of two circular horizontal plates attached to a frame. The top plate moves vertically. It has a surface of about 2500 m 2 .
  • the reference plate has a flat surface with a diameter greater than 50 mm greater than that of the top plate.
  • Equipment is provided for vertically suspending the test piece between the two trays.
  • the test piece has dimensions of 180 x 180 mm plus or minus 5 mm for width and length. There is provided a device for measuring the distance between the plates when they are close to the point of applying a pressure of 0.02 kpa.
  • a sample is conditioned for 24 hours and the test is carried out at 23 ° C. and a relative humidity of 50%.
  • a dynamometer comprising a set of fixed jaws and a set of movable jaws moving at a constant speed is used for the test.
  • the jaws of the dynamometer have a useful width of 50 mm.
  • the dynamometer is equipped with a logger which allows to draw the curve of the tractive force according to elongation.
  • Five samples of 50 mm plus or minus 0.5 mm in width and 250 mm in length are cut, in the long direction and in the cross direction of the nonwoven.
  • the samples are tested one by one, at a constant tensile speed of 100 mm per minute and with an initial distance between jaws of 200 mm.
  • the dynamometer records the curve of the tensile force in Newtons as a function of elongation.
  • a sample is conditioned for 24 hours and the test is carried out at 23 ° C. and a relative humidity of 50%.
  • a dynamometer comprising a set of fixed jaws and a set of movable jaws moving at a constant speed is used for the test.
  • the jaws of the dynamometer have a useful width of 50 mm.
  • the dynamometer is equipped with a logger which allows to draw the curve of the tensile force according to the displacement of the movable jaws.
  • 5 samples of 75 mm plus or minus 1 mm in width and 150 mm plus or minus 2 mm in length are cut in the long direction and in the cross direction of the nonwoven. The long side of 150 mm is cut in the direction of the machine direction or through to be tested.
  • Samples are tested one by one.
  • the jaws of the dynamometer are placed at an initial distance of 25 mm.
  • the sample is placed between the jaws so that the small base of the trapezium slightly tense and the base of the trapezium is relaxed.
  • Samples are tested at a constant pull rate of 100 mm per minute.
  • a sample is conditioned for 24 hours and the test is carried out at 23 ° C. and a relative humidity of 50%.
  • At least 3 samples of an area of at least 50,000 mm 2 are cut with a cutting apparatus known as a cutter.
  • Each sample is weighed on a laboratory scale with an accuracy of 0.1% of the weight of the weighed samples.
  • the decline of the surface potential is measured as follows.
  • Step 1 A DC voltage greater than or equal to ⁇ 3 KV is applied to a needle from a high voltage power supply. This makes it possible to ionize the air in the vicinity of the needle. We talk about corona discharge. For a positive (negative) voltage applied to the needle, positive (negative) ions are generated. We can therefore deposit ions whose polarity is controlled on the surface of an insulating material that is placed under this needle. The amount of ions deposited will then depend on the voltage and the duration of the corona discharge, the distance between the needle and the surface of the material and the climatic conditions (temperature and relative humidity) in which this is achieved. crown discharge.
  • a metal gate connected to a high-voltage power supply is inserted between the needle and the material.
  • the setpoint applied to this fixed grid the amount of ions deposited (e.g., applying a voltage V on the discharge gate, the amount of ions is deposited on the surface gives a voltage equivalent value on the surface of the material equal to V discharge. in other words, the ions generated by corona discharge pass through the grille and are deposited on the surface of the material until the potential on this surface reaches the value of the voltage applied to the gate.
  • the other advantage of this grid is to allow to homogenize the distribution of ions on the surface of the material.
  • Step 2 Once the ions are deposited, they represent an "equivalent" voltage on the surface that we call surface potential.
  • a non-contact electrostatic probe positioned a few mm above the material, makes it possible to measure this surface potential.
  • This electrostatic probe is connected to an electrostatic voltmeter whose analog output is connected to a computer that records the potential value as a function of the time that has elapsed after depositing the ions.
  • the complete system consists of a motorized turntable (stepper motor) with 4 sample holders.
  • the displacement of the sample holder from the discharge station to the measurement station is thus automated and the speed of movement is controlled.
  • the application of the duration and the voltage of the corona discharge is also automated.
  • the whole is driven by a program.
  • the device is installed in an enclosure climate, which makes it possible to perfectly control the desired temperature and relative humidity conditions.
  • the sample holder is grounded, which means that the back of the sample is also in contact with the ground.
  • the figure 1 represents an installation according to the invention. It comprises a conventional spunbond tower 1 providing on a conveyor belt 2 a nonwoven N which passes on two drums 4 and 5 and then on a drum 6 of drying.
  • the outlets of the jets are arranged in two rows in each injector 7 and 8. They are staggered from one row to another.
  • the distance between two orifices of the same row is between 1.2 and 1.6 mm, and preferably between 1.3 and 1.5 mm. We obtain a non-woven face without hair.
  • the figure 2 illustrates the position of the orifices of the water jets on the injector 9. They are in a row at an interval of the same size d3 as in the injectors 7 and 8, and preferably at an identical interval.
  • the distance between two adjacent outlets of the jets of the injector 10 is denoted d1 at the figure 3 .
  • the distance between the perpendiculars to the two straight lines passing through the respective centers of two adjacent rows is denoted by d2 at the figure 3 , the perpendiculars to the two lines passing through two adjacent holes of a row and the other.
  • a first row Ra a second row Rb and a third row Rc of orifices, three of them being represented in each row.
  • the row Ra thus has orifices 11, 12 and 13, the row Rb of the orifices 14, 15 and 16 and the row Rc of the orifices 17, 18, 19. orifices 11, 12, 13 pass through the same straight line, the centers of the orifices 14, 15, 16 pass through another same straight line parallel to the first and the same applies to the orifices 17, 18, 19.
  • the distance between the center of an orifice 11 and that of its neighbor orifice 12 is denoted d1.
  • the distance between the perpendicular to the straight lines of the rows Ra, Rb and Rc passing through the orifice 11 and the perpendicular to these lines passing through the center of the orifice 14 is denoted d2.
  • d1 is between 0.60 and 0.90 mm, while d2 is between 0.15 and 0.35 mm.
  • the diameter of the orifices is between 100 and 140 ⁇ m and, preferably, it is 120 ⁇ m.
  • a sheet of continuous filament PP of 2 deniers is subjected to the action of jets of water on an installation corresponding to the figure 1 , the speed of the jets of water is 50 m / minute, the pressure of the water jets on the injectors 7 and 8 is 100 bar, the pressure of the water jets on the injectors 9 and 10 is 200 bar .
  • the nonwoven obtained is dried at a temperature of 120 ° C. in a through-air oven.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP07803800A 2006-07-07 2007-06-28 Non-tisse utilise comme chiffon d'essuyage, son procede et son installation de production Active EP2041345B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07803800T PL2041345T3 (pl) 2006-07-07 2007-06-28 Włóknina stosowana jako ściereczka do wycierania oraz sposób jej wytwarzania i urządzenie do jej wytwarzania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606213A FR2903426B1 (fr) 2006-07-07 2006-07-07 Non-tisse utilise comme chiffon d'essuyage,son procede et son installation de production.
PCT/FR2007/001091 WO2008003847A2 (fr) 2006-07-07 2007-06-28 Non-tisse utilise comme chiffon d'essuyage, son procede et son installation de production

Publications (2)

Publication Number Publication Date
EP2041345A2 EP2041345A2 (fr) 2009-04-01
EP2041345B1 true EP2041345B1 (fr) 2010-01-27

Family

ID=37533240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803800A Active EP2041345B1 (fr) 2006-07-07 2007-06-28 Non-tisse utilise comme chiffon d'essuyage, son procede et son installation de production

Country Status (9)

Country Link
US (1) US20090320878A1 (zh)
EP (1) EP2041345B1 (zh)
CN (1) CN101490327B (zh)
AT (1) ATE456694T1 (zh)
DE (1) DE602007004617D1 (zh)
ES (1) ES2336853T3 (zh)
FR (1) FR2903426B1 (zh)
PL (1) PL2041345T3 (zh)
WO (1) WO2008003847A2 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2410317A1 (de) * 2010-07-13 2012-01-25 Krämer AG Bassersdorf Verfahren zum Beurteilen von an einem Körper anhaftenden Partikeln
CN102061571B (zh) * 2010-12-17 2012-09-26 多氟多化工股份有限公司 静电纺丝及水刺固结复合制膜装置
JP5712194B2 (ja) * 2012-12-04 2015-05-07 花王株式会社 拭き取りシート用不織布基材
JP5712195B2 (ja) * 2012-12-04 2015-05-07 花王株式会社 拭き取りシート用不織布基材

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737702B2 (ja) * 1986-12-31 1995-04-26 ユニ・チヤ−ム株式会社 開孔模様を有する不織布
US6573205B1 (en) * 1999-01-30 2003-06-03 Kimberly-Clark Worldwide, Inc. Stable electret polymeric articles
JP3662455B2 (ja) * 1999-11-22 2005-06-22 ユニ・チャーム株式会社 ポリプロピレン製不織布およびその製造方法
US6736916B2 (en) * 2000-12-20 2004-05-18 Kimberly-Clark Worldwide, Inc. Hydraulically arranged nonwoven webs and method of making same
US6420024B1 (en) * 2000-12-21 2002-07-16 3M Innovative Properties Company Charged microfibers, microfibrillated articles and use thereof
FR2827313B1 (fr) * 2001-07-10 2004-03-12 Rieter Perfojet Non tisse comprenant une nappe en filaments continus, son procede de fabrication et son application en tant que chiffon d'essuyage
US20030211801A1 (en) * 2002-01-09 2003-11-13 Michael Putnam Hydroentangled continuous filament nonwoven fabric and the articles thereof
US20040010894A1 (en) * 2002-07-17 2004-01-22 Avgol Ltd. Method for making a hydroentangled nonwoven fabric and the fabric made thereby
US20040121121A1 (en) * 2002-12-23 2004-06-24 Kimberly -Clark Worldwide, Inc. Entangled fabrics containing an apertured nonwoven web

Also Published As

Publication number Publication date
CN101490327A (zh) 2009-07-22
CN101490327B (zh) 2011-05-11
DE602007004617D1 (de) 2010-03-18
ES2336853T3 (es) 2010-04-16
EP2041345A2 (fr) 2009-04-01
WO2008003847A2 (fr) 2008-01-10
FR2903426A1 (fr) 2008-01-11
WO2008003847A3 (fr) 2008-02-21
US20090320878A1 (en) 2009-12-31
ATE456694T1 (de) 2010-02-15
PL2041345T3 (pl) 2010-07-30
FR2903426B1 (fr) 2008-09-12

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