EP3443161A1 - Verfahren und formierband zur herstellung einer faserstoffbahn - Google Patents
Verfahren und formierband zur herstellung einer faserstoffbahnInfo
- Publication number
- EP3443161A1 EP3443161A1 EP17718855.4A EP17718855A EP3443161A1 EP 3443161 A1 EP3443161 A1 EP 3443161A1 EP 17718855 A EP17718855 A EP 17718855A EP 3443161 A1 EP3443161 A1 EP 3443161A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- structured
- polymer foam
- forming belt
- fibrous web
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 27
- 239000000835 fiber Substances 0.000 title abstract description 16
- 239000000463 material Substances 0.000 title abstract description 9
- 239000006260 foam Substances 0.000 claims abstract description 82
- 229920000642 polymer Polymers 0.000 claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims description 39
- 239000004744 fabric Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000004049 embossing Methods 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/006—Making patterned paper
-
- 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
- D21F1/0036—Multi-layer screen-cloths
-
- 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
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/14—Making cellulose wadding, filter or blotting paper
-
- 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
- D21F7/083—Multi-layer felts
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/02—Patterned paper
Definitions
- the invention relates to a method for producing a structured fibrous web according to the preamble of claim 1 and to a forming belt for producing a structured fibrous web according to the preamble of claim 4.
- the invention also relates to a machine for producing a fibrous web according to the preamble of claim 12.
- aqueous fibrous suspension is usually dehydrated in the so-called former on a forming fabric or between two forming fabrics in a first process step. This drainage is usually supported by suction or blowing elements.
- a conventional tissue former the fibrous web is formed largely flat.
- the volume of a tissue web, the so-called bulk is an essential quality property. Therefore, it is desirable if the tissue web already forms in the former with the highest possible bulk, i. is formed.
- ATMOS TM system e.g. developed by the applicant the so-called ATMOS TM system.
- the object is fully achieved with regard to the method by a method for producing a structured fibrous web according to the characterizing part of claim 1, as well as with respect to the forming belt by a forming belt for a machine for producing a fibrous web according to the characterizing part of claim 4
- the structure of the layer of polymer foam, which transferred to the fibrous web is a pore structure of the layer of polymer foam.
- the pores of the layer of polymer foam which are open to the paper-contacting side of the layer, form those pocket-like structures in which the pulp fibers deposit during sheet formation, thereby producing a tissue web having a noticeably higher volume.
- the volume-increasing effect is therefore the same as in the prior art woven structures.
- commercially available foams, in particular flexible foams can be used for the layer of polymer foam.
- the elaborate weaving process is eliminated.
- the resulting structures in the web are irregular, since the pores in the foam are largely distributed statistically.
- the layer of polymer foam has a pore density of less than less than 45 PPI, in particular less than 30 PPI. In such a case, the pores often have a size which is very advantageous for the transfer of the structure to the paper web.
- the support structure is formed by a fabric or includes this.
- the support structure by other structures, For example, by knits, scrim, foil or membrane structures is formed, or comprises.
- the layer of polymer foam has an anisotropic pore structure.
- anisotropic structure the shape of at least a majority (often more than 50%, or even more than 80%) of the individual pores deviates from the isotropic spherical shape.
- the pores have a greater extent in the machine direction of the clothing and in the transverse direction of the clothing than in the thickness direction.
- Such a pore structure can be achieved, for example, by compressing a foam layer having an isotropic pore structure.
- such an anisotropic pore structure allows the water to be quickly directed away from the paper web in the direction of the support structure.
- the foam layer usually provides less storage volume.
- connection of the layer of polymer foam to the support structure, the layer of polymer foam with the support structure can advantageously be realized by means of gluing or welding, in particular by means of NIR transmission welding.
- the invention comprises a machine for producing a fibrous web, in particular a tissue web, characterized in that the machine has at least one forming belt according to one of claims 4 -1. Such a machine is suitable for carrying out the method according to one of claims 1 to 3 and for producing a structured fibrous web.
- Figure 1 shows an embodiment of a structured Formierbands according to the invention.
- FIG. 2 shows schematically the formation of the fibrous web on the forming belt
- FIG. 3 shows a section of the surface of a roller for transferring an external structure to a layer of polymer foam.
- FIG. 4 shows a view of a structured forming belt according to the invention.
- the structured forming belt 1 comprises a fabric 3, which provides the support structure 3.
- a layer of polymer foam 2 is attached on this support structure 3.
- This layer of polymer foam 2 also provides the paper contacting side 5 of the structured forming belt 1.
- the pores 4 of the layer of polymer foam 2 are anisotropic in the fabric shown in FIG. This can be realized, for example, by compacting a standard polymer foam, which usually has isotropic pores, by means of a compacting step by means of pressure and / or temperature.
- a possible manufacturing method for one of the patterned forming belt as shown in FIG. 1 will be explained.
- a woven support structure 3 is provided. This is to be woven from polyester filaments.
- a foam is provided, for example, in the form of a reticulated flexible polyurethane foam. In the example, this has a thickness of 4 mm and a pore density of 45 PPI.
- a polymer foam having a pore density of less than 45 PPI, in particular also less than 30 PPI.
- a suitable method for bonding the layers of polymer foam 2 to the support structure 3 is laser transmission welding.
- an NIR laser with a wavelength of 940 nm is used. This one was with a Joining pressure of approx. 20N / cm pressed. It is particularly advantageous for laser transmission welding when the polymer window 2 completely or partially absorbs the laser light, while the support structure 3 for the laser light is completely or largely transparent. This was realized in the example by dyeing the polymer foam, where an anthracite-colored foam was used. By choosing a polyester base fabric, the laser light could first penetrate the support structure 3, and was thereafter absorbed by the polymer foam. Thus, the heat necessary for welding at the junction between support structure 3 and foam layer 2 was generated. This is a common principle in laser transmission welding.
- the laminate thus bonded was then compacted at a temperature of about 190 ° under pressure.
- the resulting fabric 1 had a permeability of 400CFM at a thickness (measured at 6kPa pressure) of 1.07mm.
- the proportion of the support structure 3 was 0.49 mm, the proportion of the foam layer 2 0.58 mm. At a foam starting thickness of 4mm, it was compacted by the process to 14.5% of its original thickness.
- This paper-contacting side 5 is due to the layer of polymer foam 2 for Provided. Due to the pore structure of the polymer window 2, some of the fibers 6 can penetrate into the layer of polymer foam 2 through larger pores 4 and deposit in these pores 4. In this way, the structure of the Formierbands 1, in particular the pore structure of the layer of polymer foam 2 is at least partially transferred to the fibrous web. This effect of depositing fibers in the pore structure can be assisted by a proper choice of polymer foam. Thus, foams having a pore density of less than 45 PPI, in particular less than 30 PPI, can generally be advantageous. However, depending on the suitability of the pulp (fiber length, degree of fibrillation) foams with other pore densities can be used successfully.
- a structured fibrous web which has been produced by means of a method according to the invention can have great advantages over a comparable non-structured fibrous web, for example with regard to thickness and porosity. Due to the greater thickness and fiber webs can be produced with lower basis weight, which nevertheless have all the desired product properties. By the thus achievable saving of fiber material, the method is also economically very advantageous.
- test result is intended to illustrate which effects can be achieved by a structured fibrous web produced according to the invention in comparison to a web formed on a conventional SSB screen:
- FIG. 3 shows a section of the surface of a roller for transferring an external structure to a layer of polymer shells 2.
- the roller has both raised structural elements 11a, 11b, which are embossed into a layer of polymer foam 2 become.
- the section in Figure 3 a plurality of structural elements 10, which are designed as round recesses in the roll surface. These structural elements are transferred to the foam layer 2 as raised elements.
- both the roll surface and the raised structural elements 11a, 11b are made of metal.
- these raised structural elements 1 1 a, 1 1 b wholly or partially made of a non-thermal conductive material, e.g. consist of a polymer.
- the transfer of the structural elements 10, 1 1 a, 1 1 b on the polymer foam 2 by means of such or similar roller can in principle be done in a separate step in the run-up to or subsequent to the production of the fabric, the transfer is often advantageously together with the Compacting the foam layer done. In this way, a process step in the production of the fabric can be omitted. In addition, no additional devices for this transfer is necessary.
- FIG. 4 shows a greatly enlarged view of a structured forming belt 1 according to the invention.
- the view is made on the paper-contacting side of the Formierbandes. 1
- fibers 6 will deposit both on the webs 7 of polymeric material, as well as completely or partially penetrate into the pores 4 of the layer of polymer foam.
- the diameter "d" of such a pore is approximately 1 mm in Figure 4.
- the pore sizes in a structured forming belt will have a certain distribution.
Landscapes
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016206387.1A DE102016206387A1 (de) | 2016-04-15 | 2016-04-15 | Verfahren und Formierband zur Herstellung einer Faserstoffbahn |
PCT/EP2017/058512 WO2017178414A1 (de) | 2016-04-15 | 2017-04-10 | Verfahren und formierband zur herstellung einer faserstoffbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3443161A1 true EP3443161A1 (de) | 2019-02-20 |
EP3443161B1 EP3443161B1 (de) | 2022-07-06 |
Family
ID=58609368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17718855.4A Active EP3443161B1 (de) | 2016-04-15 | 2017-04-10 | Verfahren und formierband zur herstellung einer faserstoffbahn |
Country Status (4)
Country | Link |
---|---|
US (1) | US10934664B2 (de) |
EP (1) | EP3443161B1 (de) |
DE (1) | DE102016206387A1 (de) |
WO (1) | WO2017178414A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230079374A1 (en) * | 2020-02-27 | 2023-03-16 | Voith Patent Gmbh | Paper machine clothing |
WO2023081746A1 (en) * | 2021-11-04 | 2023-05-11 | The Procter & Gamble Company | Web material structuring belt, method for making and method for using |
WO2023081744A1 (en) * | 2021-11-04 | 2023-05-11 | The Procter & Gamble Company | Web material structuring belt, method for making structured web material and structured web material made by the method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3617442A (en) * | 1968-09-30 | 1971-11-02 | Alfred A Hurschman | Paper-making means and method |
US5429686A (en) | 1994-04-12 | 1995-07-04 | Lindsay Wire, Inc. | Apparatus for making soft tissue products |
US6610619B2 (en) * | 1999-12-29 | 2003-08-26 | Kimberly-Clark Worldwide, Inc. | Patterned felts for bulk and visual aesthetic development of a tissue basesheet |
US6878238B2 (en) * | 2002-12-19 | 2005-04-12 | Kimberly-Clark Worldwide, Inc. | Non-woven through air dryer and transfer fabrics for tissue making |
DE102006055828A1 (de) | 2006-11-27 | 2008-05-29 | Voith Patent Gmbh | Band für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton |
DE102008001854A1 (de) | 2008-05-19 | 2009-11-26 | Voith Patent Gmbh | Pressfilz |
US9453303B2 (en) * | 2008-09-11 | 2016-09-27 | Albany International Corp. | Permeable belt for the manufacture of tissue, towel and nonwovens |
US20120024489A1 (en) | 2010-07-30 | 2012-02-02 | Scott Quigley | Structured fabric |
WO2015090797A1 (de) * | 2013-12-20 | 2015-06-25 | Voith Patent Gmbh | Bespannung und verfahren zu deren herstellung |
DE102014220828B4 (de) | 2014-10-15 | 2019-05-23 | Voith Patent Gmbh | Funktionales Band, Verfahren zu seiner Herstellung und seine Verwendung |
-
2016
- 2016-04-15 DE DE102016206387.1A patent/DE102016206387A1/de active Pending
-
2017
- 2017-04-10 US US16/093,842 patent/US10934664B2/en active Active
- 2017-04-10 EP EP17718855.4A patent/EP3443161B1/de active Active
- 2017-04-10 WO PCT/EP2017/058512 patent/WO2017178414A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US20190112763A1 (en) | 2019-04-18 |
WO2017178414A1 (de) | 2017-10-19 |
EP3443161B1 (de) | 2022-07-06 |
DE102016206387A1 (de) | 2017-10-19 |
US10934664B2 (en) | 2021-03-02 |
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