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EP4253615A1 - Vorrichtung zur bildung von perforierten cordvliesen - Google Patents

Vorrichtung zur bildung von perforierten cordvliesen Download PDF

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Publication number
EP4253615A1
EP4253615A1 EP23164166.3A EP23164166A EP4253615A1 EP 4253615 A1 EP4253615 A1 EP 4253615A1 EP 23164166 A EP23164166 A EP 23164166A EP 4253615 A1 EP4253615 A1 EP 4253615A1
Authority
EP
European Patent Office
Prior art keywords
comber
drum
teeth
doffer
sheet
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
Application number
EP23164166.3A
Other languages
English (en)
French (fr)
Other versions
EP4253615B1 (de
Inventor
Laurent Thierry
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.)
Orion Financement SA
Original Assignee
Orion Financement SA
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 Orion Financement SA filed Critical Orion Financement SA
Publication of EP4253615A1 publication Critical patent/EP4253615A1/de
Application granted granted Critical
Publication of EP4253615B1 publication Critical patent/EP4253615B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the present invention relates to the field of thermo-acoustic insulation of buildings, and more precisely the production of layers of non-woven material for the production of reflective or reflective thermal insulators.
  • Reflective insulators typically include two categories of products: the first category is that of “bubble” based insulators, manufactured using plasticsurgical processes, and “multilayer” type insulators which alternate metallized films and separators composed either of based on cellular plastic foam or based on textile fibers (natural or synthetic) forming a mat of fibers.
  • the present invention applies in particular to multilayer type insulation based on textile fibers.
  • This operating principle is to seek to block the propagation of heat by using both materials that conduct little heat to create a structure capable of trapping cells of immobile air within it, and by using both metallized or metallic films to cut off the propagation of heat by radiation and to protect the still air cells, formed by the separators, from parasitic external air infiltrations.
  • Optimizing the thermal performance of these insulators largely involves optimizing the performance of the separators.
  • the present invention thus aims to optimize separators based on synthetic or natural textile fibers.
  • the manufacturing of the nonwoven is carried out independently of the assembly of the nonwoven in the final complex: the manufacturing process therefore contains a recovery operation; this recovery operation therefore requires that the nonwoven be easily handled, that is to say, rollable, transportable and unrollable again,
  • the nonwoven For the nonwoven to be easily handled, its manufacture must be heat-bonded, which makes it possible to bond the fibers together and give them sufficient mechanical resistance to stretching to withstand subsequent handling operations. In addition, bonding the fibers requires the use of an oven, which has significant consequences on energy consumption and environmental impact.
  • the most common synthetic or natural textile fibers in reflective insulators are generally fibers which are very absorbent in the Infra-red domain, and this absorption will considerably reduce the thermal performance of the separator by increasing the thermal conductivity. Consequently, insulation is limited to thin fiber mats, having fairly low or moderate weights, ranging from 40 g/m 2 to 100 g/m 2 .
  • the present invention thus aims to respond to these problems.
  • the device comprises means for recovering the material taken by the comb cleaner, and for reintroducing said material to feed the drum.
  • the zones of the external surface of said at least one comber configured so as not to take material from the drum are formed by local destruction of teeth on the external surface of said at least one comber and/or by blocking teeth on the external surface of said at least one comber.
  • said closing of teeth on the external surface of said at least one comber is formed by affixing a material cover so as to close a volume between the teeth of said at least one comber.
  • said material is reinjected upstream of the material supply to the rotating drum.
  • the present invention further relates to a sheet of fibers of non-woven material obtained by means of such a method.
  • the device as presented comprises a rotating drum 10 and one or more rotating combers 20.
  • the rotating drum 10 has the general shape of a cylinder of revolution. It has an external face 12, and is adapted to be supplied with textile fibers and to distribute them on its external face 12. It is mounted to rotate around a main axis Z-Z.
  • the rotating drum 10 is fed by a feeding system not shown in the figures, configured to supply textile fibers so that the external face 12 of the rotating drum 10 is covered with textile fibers, typically in a uniform or substantially uniform manner.
  • the drum 10 is configured so as to standardize the distribution and orientation of the textile fibers present on its external face 12.
  • the device comprises at least one rotating comber 20.
  • the doffer 20 is movable in rotation along an axis parallel to the main axis ZZ.
  • the doffer 20 typically has a general cylindrical shape of revolution, with external surface 22.
  • the doffer 20 comprises a plurality of teeth formed on its external surface 22, and adapted to pick up textile fibers present on the external face 12 of the drum 10 in such a manner. to form a sheet 30 of material.
  • the comber 20 is commonly formed with teeth distributed regularly on the external surface 22 in order to obtain a uniform sheet of material, typically a sheet of non-woven material.
  • the invention proposes a distinct approach, and thus aims to modify the configuration of the teeth of the doffer 20 so as to form one or more layers of non-woven material having recesses, that is to say areas devoid of material.
  • the comber 20 thus includes areas on its external surface 22 at which it cannot take material from the drum 10.
  • the sheet of non-woven material is formed as soon as it exits the combers 20 with recesses.
  • a first method consists of locally modifying the teeth of the comber 20, so as to render part of the teeth non-operative or non-functional. Here we can close or wrap the teeth of comber 20.
  • the comber 20 can be equipped with pellets, for example made of cork, or lead, formed so as to close the space between the teeth of the comber 20 in predetermined zones, so as to define zones in which the teeth are no longer functional, and therefore in which the comber 20 cannot take material from the drum 10.
  • pellets for example made of cork, or lead
  • teeth of the comber 20 can be locally destroyed, so as to define zones in which the comber 20 cannot take material from the drum 10.
  • the sheet formed at the outlet of the doffer 20 has recesses.
  • the device as proposed thus makes it possible to obtain directly at the output of the combers one or more layers which can be described as perforated, without requiring a subsequent operation of cutting or removing material from the layer.
  • the present invention thus makes it possible to directly obtain a sheet of perforated non-woven material, having recesses directly at the outlet of the frame, without requiring cutting or material removal steps.
  • FIG. 4 presents an example of a tablecloth thus obtained. We understand that this example is not limiting, and is purely illustrative.
  • the invention thus comes into contradiction with the usual carding techniques which aim to form uniform and homogeneous textile layers, and thus aim on the contrary to avoid the formation of areas devoid of material.
  • the invention is compatible with the use of an operation of thermo-binding positioned directly downstream, or, without the use of a thermo-binding operation, thus making it possible to avoid a significant environmental impact.
  • the doffer 20 does not take all of the material present on the drum 10.
  • the present invention proposes to add a cleaning comber 40, adapted to recover the material present on the drum 10 downstream of the comber 20.
  • the device comprises 1 comber 20, as well as a comber cleaner 40 positioned between the material supply of the drum 10 and the comber 20.
  • the material remaining on the drum 10 downstream of the combers 20 is recovered by the comb cleaner 40 before the material is redeposited on the drum 10.
  • the comb cleaner 40 can typically comprise material recovery means, typically teeth or specific linings, and/or suction means adapted to recover the material present on the drum 10, typically all of the material present on the drum 10.
  • the material thus recovered by the comb cleaner 40 is typically reintroduced upstream of the material supply to the drum 10 using suitable reintroduction and conveying means.
  • the comb cleaner 40 therefore performs a material recovery and recycling function.
  • the sheet formed at the card outlet can then be encapsulated by plastic or metallized films to form multilayer reflective thermal insulators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP23164166.3A 2022-03-28 2023-03-24 Vorrichtung zur bildung von perforierten cordvliesen Active EP4253615B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2202737A FR3133862B1 (fr) 2022-03-28 2022-03-28 Dispositif de formation de nappes de fibres cardées ajourées

Publications (2)

Publication Number Publication Date
EP4253615A1 true EP4253615A1 (de) 2023-10-04
EP4253615B1 EP4253615B1 (de) 2025-01-22

Family

ID=81928172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23164166.3A Active EP4253615B1 (de) 2022-03-28 2023-03-24 Vorrichtung zur bildung von perforierten cordvliesen

Country Status (2)

Country Link
EP (1) EP4253615B1 (de)
FR (1) FR3133862B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB951198A (en) * 1959-06-25 1964-03-04 Richard Freudenberg Improvements in the production of perforated non-woven fibre products
WO2004051020A1 (fr) * 2002-11-27 2004-06-17 Actis S.A. Materiau d'isolation thermique souple comprenant au moins une nappe ajouree
EP1226297B1 (de) * 1999-10-05 2006-06-14 Rieter Perfojet Verfahren zur herstellung eines vliesstoffes mit hydrodynamischer vernadelung
WO2010032951A2 (en) * 2008-09-19 2010-03-25 Yuhan-Kimberly, Limited Method of manufacturing nonwoven web perforated without physical or thermal deformation and absorbent article having such nonwoven web

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB951198A (en) * 1959-06-25 1964-03-04 Richard Freudenberg Improvements in the production of perforated non-woven fibre products
EP1226297B1 (de) * 1999-10-05 2006-06-14 Rieter Perfojet Verfahren zur herstellung eines vliesstoffes mit hydrodynamischer vernadelung
WO2004051020A1 (fr) * 2002-11-27 2004-06-17 Actis S.A. Materiau d'isolation thermique souple comprenant au moins une nappe ajouree
WO2010032951A2 (en) * 2008-09-19 2010-03-25 Yuhan-Kimberly, Limited Method of manufacturing nonwoven web perforated without physical or thermal deformation and absorbent article having such nonwoven web

Also Published As

Publication number Publication date
EP4253615B1 (de) 2025-01-22
FR3133862B1 (fr) 2024-04-05
FR3133862A1 (fr) 2023-09-29

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