EP0648286A1 - Procede et dispositif de fabrication de produits en fibres minerales. - Google Patents

Procede et dispositif de fabrication de produits en fibres minerales.

Info

Publication number
EP0648286A1
EP0648286A1 EP93915823A EP93915823A EP0648286A1 EP 0648286 A1 EP0648286 A1 EP 0648286A1 EP 93915823 A EP93915823 A EP 93915823A EP 93915823 A EP93915823 A EP 93915823A EP 0648286 A1 EP0648286 A1 EP 0648286A1
Authority
EP
European Patent Office
Prior art keywords
mineral fiber
needles
fiber web
needle
surface area
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
EP93915823A
Other languages
German (de)
English (en)
Other versions
EP0648286B2 (fr
EP0648286B1 (fr
Inventor
Karl Rudolph
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.)
Deutsche Rockwool Mineralwoll GmbH and Co OHG
Original Assignee
Deutsche Rockwool Mineralwoll GmbH and Co OHG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6462618&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0648286(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Deutsche Rockwool Mineralwoll GmbH and Co OHG filed Critical Deutsche Rockwool Mineralwoll GmbH and Co OHG
Publication of EP0648286A1 publication Critical patent/EP0648286A1/fr
Application granted granted Critical
Publication of EP0648286B1 publication Critical patent/EP0648286B1/fr
Publication of EP0648286B2 publication Critical patent/EP0648286B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/488—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with bonding agents

Definitions

  • the invention relates to a method for producing mineral fiber products with compacted surface areas from mineral fiber webs, the fibers within the mineral fiber web being essentially parallel or perpendicular or oblique to the large surfaces of the
  • a method of the aforementioned type and a device for carrying out the method have become known above all through Canadian Patent 1,057,183.
  • a partial web is cut off here by a horizontal cut running parallel to the large surfaces of the mineral fiber web.
  • This partial web is then lifted from the remaining mineral fiber web and pressed together between pressure rollers and thus compressed.
  • This compressed partial web is then returned to the remaining mineral fiber web.
  • This is followed by a common pass through a hardening furnace in which the binder which has hitherto not been cured in the mineral fiber web and also in the partial web is cured.
  • the invention is based on the object of providing a method for producing mineral fiber products with compressed surface areas or layers create through which high tear strength and an intensive fiber composite can be achieved.
  • the object is achieved according to the invention in that at least one surface area is subjected to needle impact to a predetermined depth of penetration, so that the fibers become matted and at the same time the surface area is compressed.
  • the end product is usually plates which are cut to a predetermined length after the treated mineral fiber web has passed through the hardening furnace.
  • the stroke frequency of the needles in relation to the normal conveying speed of the mineral fiber web is an important factor for both the degree of compaction and the matting.
  • a change in the strength properties of the end product can thus be achieved by changing the stroke frequency of the needle strokes and is adjustable. With a high stroke frequency, there is the advantage that the mineral fiber layer not hit by the needles is not deformed or even compressed due to the inertia.
  • An advantageous further development of the method is further achieved in that an endless mineral fiber web is moved continuously, is subjected to a first mechanical precompression, is then further compacted and matted in the given surface area by means of needle strokes and, under a second compression, is subjected to heat treatment to harden the Binder is supplied.
  • the needle joints for compacting and felting are distributed uniformly over the entire surface area.
  • the production of board material can be increased while the conveying speed remains the same in that the mineral fiber web is cut open in a cutting plane parallel to the large surfaces after the binder has hardened, so that two mineral fiber boards with a compacted layer are formed.
  • mineral fiber products that are used on curved surfaces, e.g. B. need to be attached to pipes.
  • a matting between the compressed surface layer and the non-compressed mineral fiber layer can be further promoted and the tear resistance increased by treating with different needle types or needle shapes.
  • the surface area is compacted and felted by means of short needles, and that part of the fibers are pushed out of the outer, compressed surface area into the inner, uncompressed area of the mineral fiber web by means of longer needles.
  • a plate-shaped end product which has a surface layer which is as hard and pressure-resistant as possible, this can be achieved in a simple manner.
  • additional additives are introduced through hollow needles for additional reinforcement of the surface area. After hardening, these additives can act to a certain extent like small stamps. However, they can also be injected in such a way that they penetrate into the area between the adjacent fibers and thus bring about an even greater degree of cohesion within the compacted surface layer.
  • the additives can also be introduced into the uncompressed mineral fiber layer, so that in addition to the felting in the
  • a thin fleece made of a fiber material preferably of glass fibers, is placed on the surface of the mineral fiber web and the needle-pushing process is then carried out is so that part of the nonwoven fibers is embedded in the mineral fiber web.
  • the thin fleece or the fabric can also consist of a different fiber material than mineral fibers, such. B. made of plastic fibers, textile fibers or metal fibers.
  • FIG. 1 shows a basic illustration of the conveying path of a mineral fiber web with conveying devices and a compacting and felting machine
  • FIG. 2 shows an embodiment of a needle
  • Figure 3 shows another embodiment of a needle
  • Figure 4 is a side view of a section of a mineral fiber web compressed and matted on both sides in an enlarged view
  • FIG. 5 shows a schematic diagram according to FIG. 1, but with compression and felting machines on both sides.
  • a mineral fiber web 1 is continuously fed in the direction of arrow 22 between endless conveyor belts 2 and 3 with a certain thickness.
  • the mineral fiber web comes from a known, unsigned collecting chamber, in which the mineral fibers produced are deposited into a layer on an air-permeable conveyor belt after the addition of a binder.
  • the mineral fiber web is then initially held in a relatively loose state between the two conveyor belts 2, 3, which are guided around deflection rollers 4 and 5. There is then a certain somewhat exaggerated pre-compression of the mineral fiber web between pressure rollers 6, 7 to 8, 9 or between appropriately arranged and guided conveyor belts.
  • the mineral fiber web can be mechanically precompressed very homogeneously in this first conveying section until a pre-compressed mineral fiber web 10 of a predetermined thickness is produced.
  • the mineral fiber web 10 pre-compressed in this way then arrives in a compression and felting device which is shown in simplified form in FIG. It has a plurality of needles 13 which are connected in groups or together with a lifting device which carries out a high-frequency lifting movement in the direction of arrow 15.
  • a lifting device is arranged on at least one surface side, either on the upper or lower side, of the mineral fiber web 10, 17 and is provided with a lifting drive (not shown).
  • the needles 13 are fastened to a plate-like carrier 11.
  • This plate-like carrier is connected to the lifting device and the drive, in such a way that the needles penetrate into the surface area of the mineral fiber web 10, 17 up to a predetermined penetration depth and compress it in the preselected surface area and simultaneously matt it.
  • the stroke of the lifting device is advantageously adjustable and adjustable to a certain height, and the stroke frequency can be regulated via the drive. It is also advantageous if the impact forces of the needles 13 can be regulated. By limiting the impact forces, the compression needles can be prevented from deforming within the mineral fiber web when unwanted wool inclusions occur, so that the risk of the needles breaking off is reduced. In practice, these previously mentioned settings and controls can be accomplished in a simple manner by the fact that the lifting device can be actuated pneumatically or hydraulically.
  • the needles 13, in particular the compression needles used for compression, have a chisel-like widened head 27 or 30 which, according to FIGS. 2 and 3, are molded onto the end of the needle shaft 26 or 29.
  • the needle head 27 has a cutting edge 28 at the lower end which, when opened, meet the fibers force them into a loop shape and thus result in a matting with the neighboring fibers.
  • a needle tip 31 which projects downward is provided on the chisel head 30. Instead, several needle tips can be arranged.
  • the needle tips expediently have small lateral hooks 32 and 33, which lead to further deformation and matting of mineral fibers, particularly in the boundary region between the compressed surface region on the one hand and the non-compressed region of the mineral fiber web.
  • Another constructive embodiment serves the same goal of felting and connection between the two aforementioned layers, according to which at least two different needle groups, namely a group of short front needles and a group of longer post needles, are provided.
  • the needles or plungers have a larger diameter and, as shown in FIGS. 2 and 3, other shapes than are known from the textile industry, for example in the case of multi-needle sewing machines.
  • the arrangement of the compression needles should suffice for a random stitch arrangement, so that the outer surface areas or layers are pre-compressed as uniformly and evenly as possible in a punctiform manner and according to the stroke frequency to be set. It is important to concentrate the impact stress caused by the needles on a small area in relation to the surface of the entire mineral fiber web, so that the impact forces compress the outer zones explained and due to the force distribution at point loads, the layers below are only slightly stressed Experienced.
  • compression needles e.g. B. with a short front needle, the fibers are forced out of the outer compressed layers into the underlying undensified fiber layers, so that additional connections are created which further favorably influence the bending and tearing behavior of the finished product.
  • the compression Needles themselves are advantageously made of light and abrasion-resistant material.
  • the aim here is to reduce the mass of the needles and the components to be moved as much as possible, so that correspondingly higher stroke frequencies are possible. This is particularly important at high line speeds in the production of the mineral fiber webs.
  • the compaction and felting can be carried out either on the top or bottom of the mineral fiber web or, as shown in FIG. 5 and in particular FIG. 4 on an enlarged scale, on both sides.
  • the mineral fiber web 17 compressed on both sides then has two compacted and matted surface areas 34 and 35 and an intermediate, undensified and non-matted middle layer 17 and 37, however, a good connection between the layers is ensured.
  • a slicing device (not shown) can be used to cut a mineral fiber web 17 or 21 matted and compacted on both sides in accordance with the separating cut 36 (FIG. 4) in two Partial webs may be provided.
  • the compressed mineral fiber web 17 emerging from the needling or felting machine is fed via conveyor rollers 18, 19 or corresponding endless conveyor belts to a hardening furnace 20, in which the mineral fiber web 21, for example, between another endless belt, not shown can receive slight post-compaction, especially to smooth the surfaces.
  • the binder which has not been cured until then is finally cured in the curing oven 20.
  • the mineral fiber web emerges from the hardening furnace in the direction of arrow 23 and can be separated into suitable plate pieces and processed into the end product. or the separation cut 36 described according to FIG. 4 can cause the separation into plate parts.
  • Figures 1 and 5 show yet another embodiment of the device according to the invention, namely that one side ( Figure 1) or both sides ( Figure 5) between the plate-like needle carriers 11 and 12 on the one hand and the mineral fiber web 10, 17 on the other hand each have a further plate 24 and 25 is provided, in which the needles 13, 14 are guided.
  • These plates 24 and 25 can also be connected to the lifting device. They can bring about a certain additional surface compaction, but above all these plates can be used to push fibers that may have been torn out of the surface back into the surface.
  • the lifting devices arranged on both sides according to FIG. 5 are advantageously operated in the direction of arrows 15 and 16 with the same lifting frequency and in push-pull mode, ie. H. if the upper lifting device moves downwards, the lower lifting device is moved upwards at the same time and vice versa during the back stroke. Since the device according to FIG. 5 is essentially symmetrical or a mirror image of the horizontal central plane, the same reference numerals have been used for the same or equivalent parts.
  • a further embodiment of the invention is achieved in that the needles are designed as hollow needles and are connected to a feed device for additives, preferably liquid additives.
  • the needles for adaptation to the conveying speed of the mineral fiber web are each intermittently movable, preferably pivotable, on the lifting device during the puncture in the conveying direction. In this way, the needles are protected, friction and thus an avoiding warming and practically completely eliminating the risk of a break-off.
  • Position of origin can be achieved by simple mechanical gear arrangements, e.g. B. by means of eccentrics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP93915823A 1992-07-07 1993-07-07 Procede et dispositif de fabrication de produits en fibres minerales Expired - Lifetime EP0648286B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4222207A DE4222207C3 (de) 1992-07-07 1992-07-07 Verfahren zum Herstellen von Mineralfaserprodukten und Vorrichtung zur Durchführung des Verfahrens
DE4222207 1992-07-07
PCT/EP1993/001758 WO1994001608A1 (fr) 1992-07-07 1993-07-07 Procede et dispositif de fabrication de produits en fibres minerales

Publications (3)

Publication Number Publication Date
EP0648286A1 true EP0648286A1 (fr) 1995-04-19
EP0648286B1 EP0648286B1 (fr) 1996-06-05
EP0648286B2 EP0648286B2 (fr) 2001-08-29

Family

ID=6462618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93915823A Expired - Lifetime EP0648286B2 (fr) 1992-07-07 1993-07-07 Procede et dispositif de fabrication de produits en fibres minerales

Country Status (7)

Country Link
EP (1) EP0648286B2 (fr)
AT (1) ATE138985T1 (fr)
CZ (1) CZ323194A3 (fr)
DE (2) DE4222207C3 (fr)
HU (1) HUT69480A (fr)
SK (1) SK280293B6 (fr)
WO (1) WO1994001608A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10703668B2 (en) 2011-09-30 2020-07-07 Owens Corning Intellectual Capital, Llc Method of forming a web from fibrous material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728523A1 (de) * 1997-07-04 1999-01-07 Erfurtgemuese E G Verfahren und Vorrichtung zur Herstellung textiler Flächengebilde
ATE248962T1 (de) 1997-07-31 2003-09-15 Thueringer Daemmstoffwerke Gmb Dämmelement in verbundausführung
DE19734532C2 (de) * 1997-07-31 2002-06-13 Thueringer Daemmstoffwerke Gmb Dämmelement
DE19756113C2 (de) * 1997-12-17 2002-01-03 Oesterr Heraklith Gmbh Vorrichtung und Verfahren zum Nadeln von Faservliesen zur Herstellung einer Dämmatte
FR2780420B1 (fr) * 1998-06-25 2000-08-11 Mci Technologies Procede de fabrication d'un revetement de fibres de verre
DE19906734C1 (de) * 1999-02-18 2000-07-27 Rockwool Mineralwolle Dämmstoffelement und Vorrichtung zur Herstellung eines Dämmstoffelementes
DE19919004A1 (de) * 1999-04-27 2000-11-02 Rockwool Mineralwolle Verfahren und Vorrichtung zur Herstellung von Dämmstoffen aus Mineralfasern sowie Dämmstoffelement aus Mineralfasern
DE10148376B4 (de) * 2001-09-29 2006-06-22 Piechatzek, Günter Alois, Dipl.-Ing. Dämmstoff-Matte auf der Basis von Hanf-Fasern sowie Verfahren und Anlage zu deren Herstellung
DE10241231B4 (de) * 2002-03-11 2006-02-09 Deutsche Rockwool Mineralwoll Gmbh + Co Ohg Wärme- und/oder Schalldämmsystem sowie Dämmelement
DE10261988B4 (de) * 2002-07-19 2007-01-25 Deutsche Rockwool Mineralwoll Gmbh + Co Ohg Dämmschicht aus Mineralfasern
DE10338001C5 (de) * 2003-08-19 2013-06-27 Knauf Insulation Gmbh Verfahren zur Herstellung eines Dämmelementes und Dämmelement
DE102009038564A1 (de) * 2009-03-31 2010-10-14 IKJ S.à.r.l. Faservlies und deren Herstellung
DE102012112670A1 (de) 2012-12-19 2014-06-26 Saint-Gobain Isover G+H Ag Nadelfilz
CN108442041B (zh) * 2018-04-23 2019-08-16 武汉纺织大学 一种蜂巢多孔结构棉的压实刺织系统及其使用方法
CN110126432B (zh) * 2018-04-23 2021-05-28 武汉纺织大学 一种蜂巢多孔结构棉的制备系统

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10703668B2 (en) 2011-09-30 2020-07-07 Owens Corning Intellectual Capital, Llc Method of forming a web from fibrous material
US11939255B2 (en) 2011-09-30 2024-03-26 Owens Corning Intellectual Capital, Llc Method of forming a web from fibrous material

Also Published As

Publication number Publication date
EP0648286B2 (fr) 2001-08-29
ATE138985T1 (de) 1996-06-15
DE4222207C2 (de) 1995-11-09
HUT69480A (en) 1995-09-28
DE4222207A1 (de) 1994-01-13
SK160494A3 (en) 1995-05-10
WO1994001608A1 (fr) 1994-01-20
EP0648286B1 (fr) 1996-06-05
CZ323194A3 (en) 1995-04-12
HU9403604D0 (en) 1995-02-28
DE59302837D1 (de) 1996-07-11
DE4222207C3 (de) 2002-04-04
SK280293B6 (sk) 1999-11-08

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