WO2008049469A1 - Structure en sandwich composée de structures textiles plates écartées les unes des autres au moyen de matériaux de remplissage pour l'utilisation dans des composants en forme de coquille liés à la résine - Google Patents

Structure en sandwich composée de structures textiles plates écartées les unes des autres au moyen de matériaux de remplissage pour l'utilisation dans des composants en forme de coquille liés à la résine Download PDF

Info

Publication number
WO2008049469A1
WO2008049469A1 PCT/EP2007/004098 EP2007004098W WO2008049469A1 WO 2008049469 A1 WO2008049469 A1 WO 2008049469A1 EP 2007004098 W EP2007004098 W EP 2007004098W WO 2008049469 A1 WO2008049469 A1 WO 2008049469A1
Authority
WO
WIPO (PCT)
Prior art keywords
sandwich structure
resin
threads
structure according
sewing
Prior art date
Application number
PCT/EP2007/004098
Other languages
German (de)
English (en)
Inventor
Franz-Jürgen KÜMPERS
Karl-Josef Brockmanns
Original Assignee
SGL Kümpers GmbH & Co.KG
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
Priority claimed from DE102006044009A external-priority patent/DE102006044009A1/de
Application filed by SGL Kümpers GmbH & Co.KG filed Critical SGL Kümpers GmbH & Co.KG
Publication of WO2008049469A1 publication Critical patent/WO2008049469A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B32B7/09—Interconnection of layers by mechanical means by stitching, needling or sewing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • 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
    • D04H13/00—Other non-woven fabrics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/246—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 combinations of materials fully covered by E04C2/16 and E04C2/20
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels

Definitions

  • the invention relates to a sandwich structure made of fabric materials spaced apart by filling materials for use in resin-bonded shell-like components according to the features of the preamble of claim 1.
  • Sandwich structures in the form of so-called distance cladding are becoming increasingly popular, especially in the aerospace industry, wind turbines and automotive and boat building. They have the advantages of a low weight in conjunction with the optimized for the intended use stability.
  • textile fabrics such as Multiaxialfadengelege, fabric, films, etc. are used for the stabilization and, for example, resin-impermeable foams for the spacing and volume production. It is assumed that larger-volume products should not be completely impregnated with resin. So you want to keep both an unwanted stiffening of the spatial structure as well as the costly unnecessary resin consumption within reasonable limits.
  • the invention is advantageously developed by the features of claims 2 to 7. While it is known in the art to stitch or tuft the fabrics only to the spacer interface, the features of the invention provide stabilization that also includes the interlayer between the fabrics the sewing or tufting thread causes a stabilization with a component also parallel to the textile fabrics on train. As a result, it is also possible to achieve very stable sandwich structures which deviate from the level placement of the textile fabrics.
  • This stabilization is particularly intense when the angle of the sewing or tufting thread is between 40 ° and 50 °.
  • enlarged cross-section of the channel ensures a space for the penetration of the resin that can form a kind of lattice structure, which is also a participation of the Foam formed clearance zone ensures the stability of the forest.
  • the cross section according to claim 5 is more than twice the cross section of the sewing or tufting thread, whereby the clearance for the resin on the one hand ensures a very good stabilization of the spatial structure and on the other hand still sufficient flexibility of the construction.
  • Threads made of glass, carbon or aramide materials are highly durable and ensure the cohesion of the entire structure even under extreme load conditions.
  • Filament structure of these threads also ensures penetration of the resin between the filaments, so that the threads with the resin in the channels also form-fitting binding.
  • Figure 1 shows a sandwich structure according to the prior art, wherein in the
  • FIG. 2 shows a planar sandwich structure according to the invention
  • FIG. 3 shows a curved spatial sandwich structure according to the invention.
  • the invention thus comprises shaped bodies whose textile fabrics are each deposited in a plane as well as almost any curved.
  • Figure 1 In the sandwich structure 1 according to the prior art (Figure 1) is between two textile fabrics 2 and 3, which are made for example Mutiaxialgelegen made of carbon fibers, a foam layer 4 arranged by means of sewing thread 5 and looper thread 8 of glass filaments with the fabrics 2 and 3 is connected to a sandwich structure 1.
  • the seam is designed as a double chain stitch, which has a high stability.
  • the angle ⁇ is 15 °.
  • the sandwich structure 1 according to the invention (FIG. 2), which comprises the same basic structural elements as in the prior art, is characterized in that the sewing 5 is inclined at an angle ⁇ of +/- 20 ° to +/- 70 ° to the perpendicular to the Surface of the textile fabrics 2 and 3 of the sandwich structure 1 run.
  • the rapier threads 8 have been omitted in Figure 2 for the sake of clarity.
  • the sewing head of a known per se Doppelkettenstichnähmaschine be adjusted by the appropriate angle, but the Nähguttransport including the intermittent fixation of the material corresponds to the orientation of the material, which is unchanged from the rectangular thread arrangement. Due to the inclination of the puncture course and the changed loop formation a needle is to be used, which is to ensure the safe penetration of the gripper and which is correspondingly longer. The required length of the needle increases with the angle ⁇ .
  • the sheets 2 and 3 are impregnated and stabilized with resin 6, for example epoxy resin.
  • resin 6 for example epoxy resin.
  • the resin also penetrates through the sufficiently large channels 7 between the sheets 2 and 3
  • Sewing thread 5 is. In this way, there is enough free space within the
  • Epoxy resin record The sewing threads 5 are formally embedded in the matrix of epoxy resin and, because of their filament structure, themselves absorb resin.
  • the channels of the sandwich structure 9 extend at angles of approximately 45 ° alternately in both directions. For reasons of clarity, the sewing threads were not drawn here.
  • FIG. 3 shows only channels for two seams. This may already be sufficient depending on the width of the sandwich structure.
  • the sewing heads are offset by these angles to the vertical.
  • the Nähguttransport corresponds to the intermittent fixation of the material of the sewing of the material, which is unchanged from the rectangular thread arrangement.
  • the offset of the seams is to be taken into account by the material transport always takes place only in half the pitch and the sewing heads are active alternately.
  • the curvature of the sewing material is to be implemented by the transporting and fixing devices having a shape and a course of movement which take into account the shape of the sandwich structure 9 to be sewn.
  • the needle length in particular the angle ⁇ to choose appropriate here.
  • connection of the sandwich structure 1, 9 can also be a tufting connection, in which no additional fixation of the tufting thread on the
  • Channel 7 fills if it has been made large enough by the tufting needles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Textile Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une structure en sandwich composée de structures textiles plates écartées les unes des autres au moyen de matériaux de remplissage pour l'utilisation dans des composants en forme de coquille liés à la résine. Selon l'invention, les fils de couture ou de tuftage (5) qui relient les structures plates (2,3) au matériau de remplissage (4) passent dans un angle de +/- 20° à +/- 70° par rapport à la verticale sur la surface de la structure plate textile (2, 3) dans la structure en sandwich.
PCT/EP2007/004098 2006-10-25 2007-05-09 Structure en sandwich composée de structures textiles plates écartées les unes des autres au moyen de matériaux de remplissage pour l'utilisation dans des composants en forme de coquille liés à la résine WO2008049469A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006044009.9 2006-10-25
DE102006044009A DE102006044009A1 (de) 2006-05-11 2006-10-25 Sandwichstruktur aus mittels Füllmaterialien beabstandeten textilen Flächengebilden für die Anwendung in harzgebundenen schalenartigen Bauteilen

Publications (1)

Publication Number Publication Date
WO2008049469A1 true WO2008049469A1 (fr) 2008-05-02

Family

ID=38656713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/004098 WO2008049469A1 (fr) 2006-10-25 2007-05-09 Structure en sandwich composée de structures textiles plates écartées les unes des autres au moyen de matériaux de remplissage pour l'utilisation dans des composants en forme de coquille liés à la résine

Country Status (1)

Country Link
WO (1) WO2008049469A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016204058A1 (de) 2015-03-12 2016-09-15 Bayerische Motoren Werke Aktiengesellschaft Sandwich-Bauteil oder Sandwich-Halbzeug
WO2016142517A1 (fr) 2015-03-12 2016-09-15 Bayerische Motoren Werke Aktiengesellschaft Composant automobile comprenant au moins un élément sandwich

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236479A1 (de) * 1972-07-25 1974-02-07 Erich Sennebogen Schichtverbundelement und verfahren zu dessen herstellung
US4196251A (en) * 1979-04-16 1980-04-01 International Harvester Company Rigidized resinous foam core sandwich structure
EP0672805A1 (fr) * 1994-03-17 1995-09-20 Joseph Maquet Panneau constitué d'au moins trois éléments sensiblement plats
DE19726831A1 (de) * 1997-06-24 1999-01-07 Liba Maschf Multiaxial-Maschine mit Portalaufbau
WO2005072940A1 (fr) * 2004-01-14 2005-08-11 Chomarat Composites Complexes de renforcement comportant des fils raidisseurs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236479A1 (de) * 1972-07-25 1974-02-07 Erich Sennebogen Schichtverbundelement und verfahren zu dessen herstellung
US4196251A (en) * 1979-04-16 1980-04-01 International Harvester Company Rigidized resinous foam core sandwich structure
EP0672805A1 (fr) * 1994-03-17 1995-09-20 Joseph Maquet Panneau constitué d'au moins trois éléments sensiblement plats
DE69415497T2 (de) * 1994-03-17 1999-07-22 Joseph Dunkerque Maquet Platte bestehend aus zumindest drei flachen Elementen
DE19726831A1 (de) * 1997-06-24 1999-01-07 Liba Maschf Multiaxial-Maschine mit Portalaufbau
WO2005072940A1 (fr) * 2004-01-14 2005-08-11 Chomarat Composites Complexes de renforcement comportant des fils raidisseurs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016204058A1 (de) 2015-03-12 2016-09-15 Bayerische Motoren Werke Aktiengesellschaft Sandwich-Bauteil oder Sandwich-Halbzeug
WO2016142517A1 (fr) 2015-03-12 2016-09-15 Bayerische Motoren Werke Aktiengesellschaft Composant automobile comprenant au moins un élément sandwich
CN107107536A (zh) * 2015-03-12 2017-08-29 宝马股份公司 具有至少一个夹层构件的车辆部件
US10525659B2 (en) 2015-03-12 2020-01-07 Bayerische Motoren Werke Aktiengesellschaft Vehicle component with at least one sandwich part
CN107107536B (zh) * 2015-03-12 2020-04-14 宝马股份公司 具有至少一个夹层构件的车辆部件

Similar Documents

Publication Publication Date Title
DE102005024408A1 (de) Verstärkung von Schaumwerkstoffen
DE102008019065B4 (de) Verfahren zur Herstellung eines beidseitig mit Deckschichten versehenen Kernverbundes sowie Kernverbund
DE2927414A1 (de) Verstaerkungsgewebe fuer harzhaltige laminate
EP0290653B1 (fr) Bande de matériaux
DD285386A5 (de) Bauteil auf velours-gewebebasis und verfahren zu seiner herstellung
WO2009053129A9 (fr) Technique de couture sur deux faces, à fil inférieur et à une aiguille
EP0673303A1 (fr) Garniture textile d'insertion pour la fabrication d'un materiau composite fibreux et materiau composite fibreux pourvu d'une telle garniture
WO2016066657A1 (fr) Structure composite pour une durée de vie accrue
DE102012023815B4 (de) Vielnadelmaschine und Verfahren zur Herstellung von verstärkten Materialien
DE2032423A1 (fr)
WO1997021860A1 (fr) Tricot multicouche et son procede de production
WO2007101582A1 (fr) Ensemble de construction constitue de structures a fils et de corps moules
DE69118225T2 (de) Plane oder ähnliches Material mit verbesserter Reissfestigkeit
WO2008049469A1 (fr) Structure en sandwich composée de structures textiles plates écartées les unes des autres au moyen de matériaux de remplissage pour l'utilisation dans des composants en forme de coquille liés à la résine
DE102006044009A1 (de) Sandwichstruktur aus mittels Füllmaterialien beabstandeten textilen Flächengebilden für die Anwendung in harzgebundenen schalenartigen Bauteilen
WO2012034699A2 (fr) Nappe de fibres de renforcement
DE102012001055B4 (de) Bauteil
DE4424636C2 (de) Mehrschichtiger, voluminöser Kaschiervliesstoff
EP2465982B1 (fr) Tissu pour l'utilisation dans des matières composites et procédé de fabrication du tissu et d'un corps en matière composite
DE102010003211B4 (de) Flachstrickvorrichtung und-verfahren
EP3760428B1 (fr) Composant composite et procédé de fabrication d'un composant composite
DE102007038931A1 (de) Fadenlagennähwirkstoffe
DE102019126609A1 (de) Rohrförmiges Bewehrungselement, Verfahren zu dessen Herstellung, Verwendung, Globalbewehrung, Druckerbeschreibungsdatei und Betonbauteil
EP3552807B1 (fr) Composant en fibres composites, composant hybride et procédé de fabrication d'un composant en fibres composites
DE102019132849B4 (de) Sandwich-Geokunststoffbahn mit verriegelnder Vernadelung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07725021

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07725021

Country of ref document: EP

Kind code of ref document: A1