EP3755833B1 - Fadenstruktur - Google Patents

Fadenstruktur Download PDF

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Publication number
EP3755833B1
EP3755833B1 EP19721187.3A EP19721187A EP3755833B1 EP 3755833 B1 EP3755833 B1 EP 3755833B1 EP 19721187 A EP19721187 A EP 19721187A EP 3755833 B1 EP3755833 B1 EP 3755833B1
Authority
EP
European Patent Office
Prior art keywords
filament
bundles
thread
filament structure
bundle
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.)
Active
Application number
EP19721187.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3755833A1 (de
Inventor
Christoph Baumgart
Florian Neumann
Dirk Lange
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.)
Delcotex Delius Techtex & Co KG GmbH
Original Assignee
Delcotex Delius Techtex & Co KG 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 Delcotex Delius Techtex & Co KG GmbH filed Critical Delcotex Delius Techtex & Co KG GmbH
Priority to EP21215088.2A priority Critical patent/EP4001480A1/de
Priority to PL19721187T priority patent/PL3755833T3/pl
Publication of EP3755833A1 publication Critical patent/EP3755833A1/de
Application granted granted Critical
Publication of EP3755833B1 publication Critical patent/EP3755833B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00—Open-work fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/002—With diagonal warps or wefts
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/587—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads adhesive; fusible
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the present invention relates to a thread structure according to claim 1.
  • Prepregs are well known.
  • the DE 69003875 T2 discloses a prepreg consisting of warp threads and weft threads, the weft threads running obliquely to the direction of the warp threads. This structure is created for a specific carrier and is no longer changed.
  • U.S. Patent 5,53,6554 discloses a belt of reinforced construction.
  • the individual reinforcement elements are laid in different directions.
  • the US 2005 / 0085147A1 discloses a prepreg woven from bundles of fibers with gaps between the bundles which are filled by auxiliary games so as not to create openings in the final product.
  • the US 2007/141335 A1 discloses a method of making a precursor yarn that can be heat treated to expand.
  • the precursor yarn is made by passing a central filament through a first bath comprising microspheres in an adhesive binder so that the central filament is coated with the microspheres.
  • the central filament coated in this way is then encased in a thermoplastic layer, which can be added via a second bath or an extrusion step.
  • These precursor yarns can then be woven into a fabric which can also have gaps between the precursor yarns.
  • the object of the present invention is to produce such prepregs with an increased utility value in a simple manner, whereby it should be ensured that the Composite structure stabilizes the end product evenly over the entire flat design of the end product.
  • the invention solves this problem with the features of the main claim.
  • the invention has the advantage that such a thread structure can be produced in the simplest possible way, practically as a raw fabric, in open form, which already has a dimensionally stable structure a priori, because the thermoplastic matrix in the individual thread bundles not only stabilizes the thread bundles, but also the entire thread structure.
  • thermoplastic matrix is present in a volume which, in a subsequent pressing process, under the known influencing variables of pressure, temperature and time, can flow into the intermediate spaces provided between the individual thread bundles and in this way for a subsequent pressing process ensures even laying of the individual threads in the end product.
  • thermoplastic matrix present in the respective thread bundle it is therefore an essential idea of the invention to determine the distances between the individual laid thread bundles, which run parallel to each other and form gaps between them in the transverse direction, with regard to the thermoplastic matrix present in the respective thread bundle, that this thermoplastic matrix together with the below Pressure from each bundle of threads outwardly flowing single threads forms a composite body evenly interspersed with single threads in every direction, which is also interspersed with the thermoplastic matrix over the entire longitudinal and transverse dimensions due to the excess of thermoplastic matrix provided by the manufacturer.
  • the dimensioning of the thread bundles that is to say their cross-sectional dimensions and the associated exposed points between the thread bundles, can easily be matched to the respective end product.
  • the open lattice structure naturally applies in all directions that are transverse to the respective laying directions of the direction-parallel thread bundles.
  • the thread structure according to the present invention can be manufactured as a semi-finished product, sandwich or lightweight panel.
  • thermoplastic matrix it is essential that the thermoplastic matrix penetrate the entire thread bundle. This means that practically no air inclusions should be permitted in the thermoplastic matrix, at least not in the technically feasible range, so that the flow of the matrix in the downstream process can also lead to a full-volume matrix portion in the end product.
  • thermoplastic material in the downstream process, a supplementary thermoplastic material can easily be processed, so that thanks to the invention, this supplementary thermoplastic material is anchored on both sides as a result of the penetration through the plastic matrix present in the original prepreg to improve the material properties.
  • the invention offers the additional advantage that, in the second processing step, a lower pressure is also sufficient to bring the thermoplastics into a capillary bond with one another.
  • thermoplastic material into the originally existing bundle of threads also deserves attention.
  • thermoplastics used today have well-known kinematic state variables that can be set in such a way that each individual thread bundle can be fully saturated so that later end products no longer have any air inclusions.
  • the invention thus shows that, previously unknown, it can also have constant lattice values in the structure of the end product, so that reliable predictions can be made with regard to the material characteristics.
  • the invention basically has holes defined by longitudinal and transverse dimensions in all embodiments, which are located between the individual thread bundles, at least before the thread bundles are pressed in a further processing step under the influencing variables of temperature, pressure and time, such a thread structure can also use its Grid values are defined.
  • Grid values are those parameters which define the size of the recesses between the thread bundles, for example the X or Y values in a Cartesian coordinate system.
  • thermoplastics used subsequently are of particular advantage and the already mentioned possibility of changing the thread geometry with regard to the structure of the end product.
  • the manufacture of the thread structure as a roller conveyor offers the lowest costs per unit of length in terms of production technology and, in particular, the possibility of preparing the roller conveyor in the form of blanks for further processing.
  • the figures show a thread structure 1 with thread bundles 2, 3, 4 laid parallel to one another in directions; 2 ', 3', 4 '; 2 ⁇ , 3 ⁇ , 4 ⁇ .
  • the invention also applies to, for example, unidirectionally laid thread bundles in which there are significant distances within the meaning of the invention only transversely to the direction of the thread bundles laid.
  • Unidirectional thread bundles could in this case be fixed to one another by occasionally transverse auxiliary threads.
  • This product of the thread structure can be used in a downstream process, for example by injection molding or forming, to manufacture components for all kinds of industrial applications.
  • the thread structure is completely and uniformly impregnated with a thermoplastic matrix in a form-fitting manner and that the thread bundles are relatively can no longer move to each other after the thread structure has been preconsolidated accordingly.
  • Pre-consolidation in this sense means that dimensional stability of the lattice structure with the openings in it must be achieved.
  • FIG. 3 shows the thread bundles 2,3,4; 2 ', 3', 4 '; 2 ⁇ , 3 ⁇ , 4 ⁇ completely penetrated by the thermoplastic matrix 6.
  • Each thread bundle consists of a large number of individual threads 5 shown, which are embedded in the full-volume thermoplastic matrix.
  • thermoplastic matrix present in each thread bundle connects the pairs of intersecting thread bundles with one another in a dimensionally stable manner, so that semi-finished products made from the thread structure can be tailored precisely to the respective end product.
  • the thread bundles have the same width and the same thickness in every direction.
  • the fabric or lay-up constructions have a thread spacing of more than 2 mm and, depending on the requirement profile for the end product, are arranged at right angles and / or in different directions biaxially and / or multiaxially.
  • each thread bundle has individual threads 5 arranged in multiple layers, which are distributed more or less evenly in the thread bundle and are enclosed flush and full-volume by the thermoplastic matrix.
  • the thread bundles have a width 9 and a height 10, so that so many layers of single threads can be accommodated in each thread bundle and so much thermoplastic matrix can enclose these single threads that when pressing the thread structure under the known parameters of pressure, temperature and time the originally existing parameters pressure, temperature and time the originally existing distances 7.8 between the individual thread bundles are filled by the flow of the individual threads 5 into the adjacent originally exposed distances 7.8.
  • thermoplastic matrix is at least in the originally exposed spaces 7, 8 with the in its embedded individual threads 5 can squeeze, so that in the end a three-dimensionally shaped end product is created with evenly embedded individual threads originating from the original thread bundles.
  • FIG. 6 The presentation of the thread structure according to the invention as a roller conveyor 12, which can be used, for example, to produce blanks 13 which, after appropriate 3-D deformation, can be processed as an end product, here for example as a can lid 14.
  • the thread structure can also be produced in the form of a presentation in a carbon look, in order to be able to serve appropriate customer groups if necessary.
  • thermoplastic plastics can be used, but also thermosetting plastics.
  • thermosetting plastics of only small thickness since these - assuming correspondingly small thickness dimensions - remain elastic during curing.
  • the invention also relates to a method for producing the thread structure according to the invention, which has been found to be advantageous.
  • a liquefied plastic which can be either theoretically or thermosetting, is then applied to this intermediate structure so abundantly that the excess plastic must be removed after the application.
  • the lattice structure prepared in this way be subjected to a subsequent drying process, this can be done without contact, for example by infrared heating or the like in an oven or under an infrared heater, so that the dried finished product, the thread structure according to the invention, can be rolled up so as to become the roll make-up.
  • thermosetting plastic can also be rolled up.
  • thermosetting plastic on the thread structure allows a high degree of flexibility without the risk of breakage, even though it is a thermosetting plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Nonwoven Fabrics (AREA)
EP19721187.3A 2018-02-23 2019-02-25 Fadenstruktur Active EP3755833B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21215088.2A EP4001480A1 (de) 2018-02-23 2019-02-25 Fadenstruktur
PL19721187T PL3755833T3 (pl) 2018-02-23 2019-02-25 Struktura włókna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018001440.2A DE102018001440A1 (de) 2018-02-23 2018-02-23 Fadenstruktur
PCT/EP2019/000056 WO2019161969A1 (de) 2018-02-23 2019-02-25 Fadenstruktur

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP21215088.2A Division EP4001480A1 (de) 2018-02-23 2019-02-25 Fadenstruktur

Publications (2)

Publication Number Publication Date
EP3755833A1 EP3755833A1 (de) 2020-12-30
EP3755833B1 true EP3755833B1 (de) 2021-12-22

Family

ID=66379859

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19721187.3A Active EP3755833B1 (de) 2018-02-23 2019-02-25 Fadenstruktur
EP21215088.2A Withdrawn EP4001480A1 (de) 2018-02-23 2019-02-25 Fadenstruktur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21215088.2A Withdrawn EP4001480A1 (de) 2018-02-23 2019-02-25 Fadenstruktur

Country Status (6)

Country Link
EP (2) EP3755833B1 (pl)
CN (1) CN112041491B (pl)
DE (1) DE102018001440A1 (pl)
PL (1) PL3755833T3 (pl)
PT (1) PT3755833T (pl)
WO (1) WO2019161969A1 (pl)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100926A (en) * 1958-04-03 1963-08-20 Electric Storage Battery Co Method of producing expanded fabric-like material
JPH01321947A (ja) * 1988-06-20 1989-12-27 Hagiwara Kogyo Kk ネット状物
JPH0823095B2 (ja) * 1989-06-06 1996-03-06 東レ株式会社 補強繊維織物
US5536554A (en) * 1994-09-19 1996-07-16 Wellington Sears Company Reinforcing fabric for power transmission belts
AU6517198A (en) * 1997-04-03 1998-10-22 Chisso Corporation Long fiber-reinforced net
US6846548B2 (en) * 1999-02-19 2005-01-25 Honeywell International Inc. Flexible fabric from fibrous web and discontinuous domain matrix
DE60144070D1 (de) * 2001-12-19 2011-03-31 Toray Industries Carbonfaserverstärkungsgewebe und -prepreg und prepregherstellungsverfahren
US7785509B2 (en) * 2005-12-21 2010-08-31 Pascale Industries, Inc. Expansible yarns and threads, and products made using them
WO2008062818A1 (en) * 2006-11-22 2008-05-29 Fukui Prefectural Government Reinforced thermoplastic-resin multilayer sheet material, process for producing the same, and method of forming molded thermoplastic-resin composite material
US20090309260A1 (en) * 2008-06-12 2009-12-17 Kenneth Herbert Keuchel Method of delivering a thermoplastic and/or crosslinking resin to a composite laminate structure
CN104105589A (zh) * 2012-01-25 2014-10-15 赫克赛尔控股有限责任公司 层压件的改进或关于层压件的改进
JP6021343B2 (ja) * 2012-02-09 2016-11-09 株式会社神戸製鋼所 含浸糸布及び含浸糸布の製造方法

Also Published As

Publication number Publication date
EP3755833A1 (de) 2020-12-30
WO2019161969A1 (de) 2019-08-29
CN112041491A (zh) 2020-12-04
PL3755833T3 (pl) 2022-06-27
EP4001480A1 (de) 2022-05-25
PT3755833T (pt) 2022-01-20
DE102018001440A1 (de) 2019-08-29
CN112041491B (zh) 2022-05-03

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