WO2014001217A1 - Procédé de réalisation de trous débouchants dans un substrat de conception bidimensionnelle, notamment un film en forme de bande à l'aide de différents faisceaux laser ; habillage pour machine à papier pourvu de différents trous - Google Patents

Procédé de réalisation de trous débouchants dans un substrat de conception bidimensionnelle, notamment un film en forme de bande à l'aide de différents faisceaux laser ; habillage pour machine à papier pourvu de différents trous Download PDF

Info

Publication number
WO2014001217A1
WO2014001217A1 PCT/EP2013/063009 EP2013063009W WO2014001217A1 WO 2014001217 A1 WO2014001217 A1 WO 2014001217A1 EP 2013063009 W EP2013063009 W EP 2013063009W WO 2014001217 A1 WO2014001217 A1 WO 2014001217A1
Authority
WO
WIPO (PCT)
Prior art keywords
holes
laser
substrate
film
produced
Prior art date
Application number
PCT/EP2013/063009
Other languages
German (de)
English (en)
Inventor
Michael Straub
Original Assignee
Voith Patent Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2014001217A1 publication Critical patent/WO2014001217A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
    • B23K26/0846—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt for moving elongated workpieces longitudinally, e.g. wire or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
    • 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
    • D21F1/0063—Perforated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/16—Bands or sheets of indefinite length

Definitions

  • the invention relates to a method for introducing through-holes with
  • the film are introduced.
  • the films can be very well used as a fabric in a paper machine, for example as dewatering belts.
  • DE A1 10 2010 040 089 it is disclosed, for example, that in a polymeric
  • the polymeric material is formed as a band and serves as a covering, in particular forming fabric for supporting and supporting a pulp mixture from which later the finished fibrous web or paper web
  • the object of the invention is to specify a method for laser drilling, with which the drilling times for a band-shaped film intended for use as a covering in a paper machine can be shortened.
  • various hole geometries should be produced.
  • a certain number of through holes are made by means of a first laser, in particular a CO2 laser, and a certain number of through holes by means of a second laser, in particular a UV laser, wherein the first laser at a longer operating wavelength than the second laser works.
  • the drilling times are shortened considerably.
  • a certain proportion of the holes or through-holes can, in a very short time, by the first laser, so to speak "shot” and by means of the second laser, which works more precisely and / or reproducible and / or controllable with respect to the producible size and / or geometry of the holes generated or through holes as the first laser, another portion of the holes or through holes produced become.
  • the forms and sizes of through-bores are defined as desired by means of the second laser and to be introduced into the substrate or the film in combination with one another.
  • the fabric has a useful area which is bingbar in their intended use with a fibrous web in contact, wherein the substrate is provided in the region of the useful area with the first laser and the second laser.
  • the first laser is a CO2 laser and the second laser is a UV laser.
  • CO2 lasers are very good as they can generate a large number of holes in a very short time.
  • UV lasers can be used very flexibly for the stated purpose and can easily reproduce any hole sizes and hole shapes, in particular along the axial direction.
  • the number of through holes drilled with the second laser are in the ratio of 1: 1 to 1:10, preferably 1: 4, to the number of through holes drilled with the first laser.
  • through bores which are produced with the aid of the first laser are arranged through bores which are produced with the aid of the second laser and / or that between through bores are formed by means of the through holes second laser produced through holes are arranged, which are produced by means of the first laser.
  • the through holes made with the first laser have a larger diameter than the through holes made with the second laser.
  • cylindrical through holes with diameters between 80 and 100 ⁇ m are introduced into the substrate or the film by means of the CO2 laser and the remaining through holes are made with the aid of the UV laser. It is possible to produce the through holes to be introduced with the UV laser in any desired geometries, for example in the form of elongated holes, star-shaped, cross-shaped, rectangular and other conceivable embodiments, as well as in smaller cross-sectional areas than the cylindrical bores drilled with CO2 laser , The ratio between holes drilled with the first laser and with the second laser is controllable and dependent on the product being dewatered.
  • the method can be configured expediently by first processing the substrate by means of the first laser for producing the larger through-holes and subsequently processing the substrate by means of the second laser to produce the smaller, in particular between the larger through-holes, through-holes.
  • the through holes introduced with the second laser are not drilled in a cylindrically shaped manner, like the holes made with the first laser, but are inserted in such a way that seen in the thickness or depth direction of the substrate or the film, ie in the Inside the substrate or the film, there is a bottleneck of the through hole.
  • Each through-bore consists of two coaxial funnel-shaped bores, the first with its inlet opening on one side of the substrate or the film and a second bore with its outlet opening on the opposite side of the substrate. Both funnel-shaped holes meet at their end to each other and thus form the said bottleneck in the interior of the substrate.
  • the bore tapers to said constriction and the bore widens again from the constriction, which is meant by the above-mentioned term "funnel-shaped.”
  • the inlet and outlet openings each have a larger one Cross-sectional area as the bottleneck, as the name "bottleneck" suggests.
  • each constriction is incorporated at a distance to one side of the substrate or the film at a distance and this distance corresponds to approximately 1/3 of the thickness of the substrate or the film.
  • the subsequently widening section is then logically 2/3 of the thickness of the substrate or the film.
  • the advantage of this is that the acceleration path is thus longer than the existing deceleration path.
  • the extension of the through-hole to the machine side increases, the drainage performance.
  • the extension to the fibrous web or paper side allows that can be sucked from a larger surface. As a result, fewer blockages of the pores occur.
  • the subsequent dewatering performance can also be further increased if the through-hole is made so that the outlet opening has a larger cross-sectional area than that of the inlet opening.
  • the UV laser device is equipped with mirror scanners. This makes it possible to produce above all the manifold bore geometries described above.
  • the second laser used for drilling in particular UV laser has a beam, which preferably has a diameter of only 50 ⁇ or less. Furthermore, the UV laser can be tracked so that the mentioned various bore geometries can be produced. Optionally, several drilling operations are necessary for this.
  • the elongation property of the substrate or of the film can also be controlled with the bores produced according to the invention.
  • the tensile strength increases compared to such substrates with only large round holes.
  • Will the Slotted holes incorporated in the transverse direction increase the fiber support property.
  • the object of the invention is also achieved according to claim 16 with a covering for a paper machine.
  • the covering is a film which is designed in the form of an endless belt with a useful area which can be brought into contact with a fibrous web, which has a multiplicity of through holes in the machine direction and in the transverse direction of the machine for dewatering a paper, board or tissue web ,
  • the useful area of the covering or film has a combination of through holes, of which one part has a larger diameter and / or different geometry than another part.
  • the through-holes are produced by a method which has been described above. To avoid repetition, it will not be discussed in detail here.
  • This clothing according to the invention is characterized by an optimal flow of the boreholes, whereby a high drainage performance is achieved becomes.
  • adhesion of paper fibers in their use in the papermaking machine is minimized and the release of the formed web is facilitated.
  • FIG. 1 shows a plan view of part of the substrate or film drilled according to the invention with a first variant of the drill pattern
  • FIG. 2 shows a plan view of part of the substrate or film drilled according to the invention with a second variant of the drill pattern
  • FIG. 3 shows a cross section through part of a substrate drilled in accordance with the invention in FIG.
  • FIG. 1 Shown in Figure 1 is a sheet substrate 1, in the form of a band-like film consisting of a polymeric material in the form of plastic.
  • the substrate or the film 1 (hereinafter referred to as film) extends in the machine direction MD and in the transverse direction QD.
  • the film is to serve in the example as a forming fabric for dewatering a fibrous web in a papermaking machine. Therefore, a certain number of through-holes are introduced into the film by means of a CO2 laser, designated 2, and a certain number of through-holes, made with the aid of a UV laser and designated 3.
  • a hole pattern is exemplified, which consists of large and small holes.
  • the large holes or through holes 2 are with Help of a CO2 laser and the small through holes 3 made with the help of a UV laser.
  • FIG. 3 shows a section of a film drilled as in FIG. 1 in cross-section.
  • the section line is indicated by A-A.
  • the film 1 has a thickness d.
  • the film 1 is provided with a plurality of different through-holes.
  • FIG. 3 only two adjacent bores (see section line A-A from FIG. 1) are shown for clarification.
  • through holes are introduced both with the aid of a CO2 laser and with the aid of a UV laser.
  • On the left is the UV hole 3 and to the right of it the CO2 hole 2. Both are circular through holes.
  • the CO2 bore 2 has a maximum diameter of 100 ⁇ , whereas the UV bore 3 has a significantly smaller diameter.
  • a through hole 3 made with the UV laser thus consists of funnel-shaped or frustoconical bores 3a and 3b arranged one above the other. The through hole 3 is thus not continuously bored cylindrical.
  • Each through hole 3 thus consists of the first bore 3a with a located on the film side 1 a inlet opening 3c and a second bore 3b with a located on the opposite side of the film 1 b outlet opening 3d.
  • Both openings 3c and 3d each have a larger cross-sectional area A3c (cross-sectional area of the inlet opening 3c) and A3d (cross-sectional area of the outlet opening 3d) than an existing constriction 3f of the through-hole 3 at which the two funnel-shaped bores 3a and 3b adjoin one another.
  • A3c cross-sectional area of the inlet opening 3c
  • A3d cross-sectional area of the outlet opening 3d
  • the said constriction 3f has a nominal diameter of 25 ⁇ and also has the film side 1 a at a distance a.
  • the first hole 3a is located and tapers to the constriction 3f, corresponds to about 1/3 of the thickness d of the film 1, so that the downwardly widening bore 3b extends over about 2/3 of the thickness d of the film 1 and is denoted by b.
  • the number of through holes 3 bored with UV lasers is 1: 1 to 1:10, preferably 1: 4, relative to the number of through holes 2 drilled with CO2 lasers.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne un procédé de réalisation de trous débouchants (2, 3) dans un substrat de conception bidimensionnelle, notamment un film (1) en forme de bande à l'aide de faisceaux laser, ledit film étant destiné à servir d'habillage dans une machine à papier, les trous débouchants (2, 3) étant réalisés dans une direction d'épaisseur (d) du substrat ou du film (1). Il est également prévu de permettre la réalisation d'un certain nombre de trous débouchants (2) à l'aide d'un laser CO2 et d'un certain nombre de trous débouchants (3) à l'aide d'un laser UV, ce qui permet d'obtenir des trous débouchants (3.1, 3.2, 3.n) aux tailles et aux formes de définition quelconque, et de réaliser une combinaison mutuelle de trous débouchants dans le substrat ou le film (1). L'invention concerne également un habillage pour machine à papier doté de différents trous (2, 3, 3.1, 3n).
PCT/EP2013/063009 2012-06-25 2013-06-21 Procédé de réalisation de trous débouchants dans un substrat de conception bidimensionnelle, notamment un film en forme de bande à l'aide de différents faisceaux laser ; habillage pour machine à papier pourvu de différents trous WO2014001217A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012210768.1A DE102012210768A1 (de) 2012-06-25 2012-06-25 Verfahren zur Einbringung von Durchgangsbohrungen mit Hilfe von Laserstrahlen in ein flächig ausgebildetes Substrat, insbesondere eine bandförmige Folie
DE102012210768.1 2012-06-25

Publications (1)

Publication Number Publication Date
WO2014001217A1 true WO2014001217A1 (fr) 2014-01-03

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PCT/EP2013/063009 WO2014001217A1 (fr) 2012-06-25 2013-06-21 Procédé de réalisation de trous débouchants dans un substrat de conception bidimensionnelle, notamment un film en forme de bande à l'aide de différents faisceaux laser ; habillage pour machine à papier pourvu de différents trous

Country Status (2)

Country Link
DE (1) DE102012210768A1 (fr)
WO (1) WO2014001217A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10390998B2 (en) 2014-11-07 2019-08-27 The Procter & Gamble Company Process and apparatus for manufacturing an absorbent article using a laser source
CN110340547A (zh) * 2019-07-16 2019-10-18 绍兴市柯桥区成锐冲孔制品有限公司 一种羽绒服面布用冲孔工艺
EP3597821A1 (fr) * 2018-07-17 2020-01-22 Voith Patent GmbH Dispositif de tension pour une machine destinée à la fabrication d'une bande de matière fibreuse
US10806635B2 (en) 2016-03-15 2020-10-20 The Procter & Gamble Company Methods and apparatuses for separating and positioning discrete articles
US20220081837A1 (en) * 2019-02-08 2022-03-17 Voith Patent Gmbh Method for producing a paper machine clothing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107378274A (zh) * 2017-09-11 2017-11-24 广东工业大学 一种激光打孔方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103376A2 (fr) * 1982-07-22 1984-03-21 The Wiggins Teape Group Limited Machine pour la fabrication du papier
US4537658A (en) * 1982-09-30 1985-08-27 Scapa Inc. Papermakers fabric constructed of extruded slotted elements
GB2331038A (en) * 1997-11-06 1999-05-12 Westwind Air Bearings Ltd Apparatus for forming holes in sheet material
JP2011110598A (ja) * 2009-11-30 2011-06-09 Panasonic Corp レーザ加工方法およびレーザ加工装置
JP2011143434A (ja) * 2010-01-14 2011-07-28 Hitachi Via Mechanics Ltd レーザ穴あけ方法
DE102010040089A1 (de) 2010-09-01 2012-03-01 Voith Patent Gmbh Gelochte Folienbespannung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103376A2 (fr) * 1982-07-22 1984-03-21 The Wiggins Teape Group Limited Machine pour la fabrication du papier
US4537658A (en) * 1982-09-30 1985-08-27 Scapa Inc. Papermakers fabric constructed of extruded slotted elements
GB2331038A (en) * 1997-11-06 1999-05-12 Westwind Air Bearings Ltd Apparatus for forming holes in sheet material
JP2011110598A (ja) * 2009-11-30 2011-06-09 Panasonic Corp レーザ加工方法およびレーザ加工装置
JP2011143434A (ja) * 2010-01-14 2011-07-28 Hitachi Via Mechanics Ltd レーザ穴あけ方法
DE102010040089A1 (de) 2010-09-01 2012-03-01 Voith Patent Gmbh Gelochte Folienbespannung

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10390998B2 (en) 2014-11-07 2019-08-27 The Procter & Gamble Company Process and apparatus for manufacturing an absorbent article using a laser source
US10806635B2 (en) 2016-03-15 2020-10-20 The Procter & Gamble Company Methods and apparatuses for separating and positioning discrete articles
EP3597821A1 (fr) * 2018-07-17 2020-01-22 Voith Patent GmbH Dispositif de tension pour une machine destinée à la fabrication d'une bande de matière fibreuse
WO2020015915A1 (fr) * 2018-07-17 2020-01-23 Voith Patent Gmbh Entoilage pour une machine servant à la fabrication d'une bande de matière fibreuse
CN112513368A (zh) * 2018-07-17 2021-03-16 福伊特专利有限公司 用于制造纤维料幅的机器的网毯
US11473244B2 (en) 2018-07-17 2022-10-18 Voith Patent Gmbh Clothing for a machine for producing a fibrous material web
US20220081837A1 (en) * 2019-02-08 2022-03-17 Voith Patent Gmbh Method for producing a paper machine clothing
US11795618B2 (en) * 2019-02-08 2023-10-24 Voith Patent Gmbh Method for producing a paper machine clothing
CN110340547A (zh) * 2019-07-16 2019-10-18 绍兴市柯桥区成锐冲孔制品有限公司 一种羽绒服面布用冲孔工艺
CN110340547B (zh) * 2019-07-16 2021-10-22 绍兴市柯桥区成锐冲孔制品有限公司 一种羽绒服面布用冲孔工艺

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