EP0469558A1 - Matière textile emboutie et pièces moulées obtenues - Google Patents

Matière textile emboutie et pièces moulées obtenues Download PDF

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Publication number
EP0469558A1
EP0469558A1 EP91112815A EP91112815A EP0469558A1 EP 0469558 A1 EP0469558 A1 EP 0469558A1 EP 91112815 A EP91112815 A EP 91112815A EP 91112815 A EP91112815 A EP 91112815A EP 0469558 A1 EP0469558 A1 EP 0469558A1
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EP
European Patent Office
Prior art keywords
nonwoven fabric
filaments
coarse
titer
resin
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
EP91112815A
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German (de)
English (en)
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EP0469558B1 (fr
Inventor
Werner Lachenmeir
Michael Schöps
Elke Gebauer
Günther Dr. Vock
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Hoechst AG
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Hoechst AG
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Publication of EP0469558A1 publication Critical patent/EP0469558A1/fr
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Publication of EP0469558B1 publication Critical patent/EP0469558B1/fr
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Expired - Lifetime legal-status Critical Current

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    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • 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
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/12—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the present invention relates to a thermoformable nonwoven fabric, a resinous sheet-like prepreg made therefrom, a three-dimensionally deformed textile structure produced using the non-resinous or resinous thermoformable nonwoven fabric, and a sandwich material with a core made from said three-dimensionally deformed resinous textile structure.
  • the invention further relates to methods for producing the above-mentioned objects.
  • EP-A-247 232 describes nonwovens made from filaments of low pre-orientation, which shows an elongation at break of over 100% or a birefringence of 0.01 to 0.07. These nonwovens are thermally pre-consolidated by hot embossing rollers, moistened and then thermally fixed under tension. This results in solidified embossing points, which greatly limit the mobility of the filaments in the nonwoven, and the subsequent fixation under tension results in an anisotropy of the thermomechanical properties, which severely impairs the deformability of such nonwovens, at least in the direction of tension.
  • a method for producing a deep-drawn molded part from a staple fiber fleece in which a staple fiber fleece is used which contains at least 10% by weight stretchable fibers with an elongation at break at 150 ° C. below the melting point contains at least 100%, which is solidified by needles and which is deep-drawn at a temperature between 150 ° C and the melting point of the stretchable fibers.
  • the fleece can be additionally reinforced by a thermoplastic or thermosetting binder.
  • the staple fibers used for this material can consist of a wide variety of synthetic polymers and, as shown in the examples, have staple lengths of approximately 50-80 mm and single-filament titer of 1.5 to 20 denier.
  • the molded parts are suitable as self-supporting filters. However, they are mechanically less resilient due to the exclusive use of staple fibers.
  • the publication gives no indication that a deep-drawn nonwoven could also be constructed from continuous fibers; rather, the person skilled in the art is led to assume that the deep-drawing ability of this known fleece results from the use of short-cut fibers, which can slide past one another relatively easily in the deep-drawing process.
  • DE-B 1 560 797 discloses a deformable spunbonded fabric which consists exclusively of partially stretched, endless synthetic fibers.
  • the fiber material of these nonwovens can consist of polyamides, polyesters or polyolefins.
  • this fleece is compacted in a pattern and impregnated with locally varying binder concentrations. According to the information in this document, this special type of consolidation is of crucial importance for the deformability of the fleece. Similar to the point-shaped consolidation carried out according to EP-A-247 232, however, there is also an anisotropy in the mobility of the filaments within the nonwoven, which impairs the three-dimensional deformability of the nonwoven.
  • the present invention provides an isotropic, deep-drawing nonwoven fabric which, under normal processing conditions, in particular during the impregnation process, exhibits a very good dimensional stability and which at the same time enables a deep-drawing ratio which is sufficiently large for all practical applications.
  • the isotropic, deep-drawing nonwoven according to the invention is designed as a filament nonwoven and is characterized in that it consists of at least 30% by weight of slightly oriented, coarse-titer filaments with a titer of more than 7 dtex and that it is mechanically consolidated.
  • the mechanical strengthening can be carried out in any manner known per se, e.g. by needles or by hydrodynamic means by fluid jets, as has been described, for example, in EP-A-0 108 621.
  • the orientation of the low-orientation, coarse-titer filaments contained in the nonwovens according to the invention is expediently set so that it corresponds to a maximum tensile strength elongation of at least 80%, preferably of at least 100%.
  • An upper limit for the maximum tensile strength expansion of the low-orientation, coarse-titer filaments is basically only given by their manufacturability. However, it is advantageous to adjust the orientation of these filaments so that there is a maximum tensile elongation between 100 and about 350%.
  • the degree of orientation of the slightly oriented, coarse-titer filaments that is to say their maximum tensile force extension, to the intended use, that is to say to the three-dimensional deformation to be achieved by deep-drawing, in such a way that the coarse-titer filaments cannot tear in the stretched areas, but also not too large Have more stretchability. It is therefore particularly preferred to use the orien tion of the coarse-titer filaments, ie to adjust their maximum tensile strength so that after the deep-drawing deformation of the fleece according to the invention, the coarse-titer filaments in the stretched areas still have a residual drawability of about 10 to 50%, in particular 10 to 30%.
  • the coarse-titer filaments contained in the nonwovens according to the invention generally have individual titers of 7 to 30 dtex, preferably 10 to 25 dtex. Titers outside of these expedient titer limits are also possible, provided that care is taken to ensure that the conditions for the orientation of the filament material described in more detail above can be met.
  • the deep-drawable nonwovens according to the invention consist 100% of the slightly oriented, coarse-titer filaments.
  • other fibers can correspond to any known type of fiber suitable for nonwoven manufacture. They preferably have a normal to high degree of orientation and can accordingly be normal to highly tear-resistant and they can be in the form of staple fibers or, preferably, in the form of continuous fibers. Therefore, in the following description, the term "other fibers" is intended to encompass all of these types of fibers.
  • nonwovens according to the invention which have only about 30% of low orientation, have coarse titer filament, can still be deep-drawn, while known nonwovens have only a moderate deep-drawing ability and tear in the stretched zones at higher deep-drawing ratios.
  • the deep-drawing ability of nonwovens according to the invention with a predominant proportion of other fibers is likely to be attributed to the fact that the proportion of slightly oriented, coarse-titer filaments contained in the nonwoven takes on a surprisingly good support and stabilizing function which surprisingly effectively prevents tearing of the other fiber components of the nonwoven according to the invention.
  • Preferred nonwovens according to the invention contain a proportion of 40 to 85% by weight of the low-orientation, coarse-titer filaments or, as already stated above, they consist of 100% of low-orientation, coarse-titer filaments.
  • the low-orientation, coarse-titer filaments nor the other fibers of the nonwoven according to the invention all have to have the same titer. Rather, two or more groups of low-orientation, coarse-titer filaments with different titers above 7 dtex can also be contained in the same nonwoven or the titer of the low-orientation, coarse-titer filaments can be statistically distributed in a range above 7 dtex as long as their orientation is only Maximum tensile strength expansion of at least 80%. The same naturally also applies to the other fibers of the nonwoven fabric according to the invention. These can also be contained in one and the same nonwoven fabric in different titers or in a titre spectrum in which the titers are statistically distributed, although the titer limitation to values above 7 dtex does not apply to them.
  • the titers of these "other fibers" can therefore also be smaller than 7 dtx and are usually 1 to 30 dtex.
  • the character of the nonwovens according to the invention can be varied within very wide limits. For example, a higher proportion of coarse-titer filaments and fibers leads to increased stiffness and less area coverage; a higher proportion of fine titers below 10 dtex is particularly preferred if the area coverage of the nonwoven fabric according to the invention is to be made more uniform and / or denser.
  • the deep-drawable nonwoven fabric according to the invention can also have a layer structure in which the low-orientation, coarse-titer filaments and the other fibers are contained in different layers. Layers with slightly oriented, coarse titer filaments and layers with other fibers alternate with each other.
  • At least one outer side of the layered nonwoven fabric but in particular both outer sides, layers consist of slightly oriented, coarse-titer filaments.
  • the layers of such a nonwoven fabric according to the invention are also advantageously mechanically z. B. connected by needles.
  • the excellent support capacity of the deep-drawable nonwovens according to the invention can also be used in such a way that a nonwoven according to the invention is combined with other known nonwovens and is connected at points or over the entire surface.
  • a layer structure is formed which, due to the presence of at least one layer of a nonwoven fabric according to the invention, has good thermoformability.
  • the number of layers is in principle not limited, but is determined by the intended use.
  • Such a combination generally has alternating nonwovens according to the invention and customary ones and can have an inventive or a conventional nonwoven on one or both sides as the outer layer.
  • the basis weight of the nonwovens according to the invention is also essentially determined by the intended use of the material and is generally in the range from 50 to 500 g / m 2 , preferably from 100 to 300 g / m 2 .
  • the excellent deformability of the nonwoven fabric according to the invention is based not only on the good deformability of the low-orientation, coarse-titer filaments contained therein, but also on the good mobility of the filaments in the purely mechanically consolidated nonwoven fabric.
  • the higher volume of mechanically bonded nonwovens compared to thermally bonded ones is also advantageous for many applications.
  • the coarse-titered individual filaments contained in the nonwoven fabric according to the invention result in good intrinsic stability of the deep-drawn molded articles even if they contain no or no stabilizing resin.
  • the deep-drawable spunbonded nonwoven according to the invention is produced in a manner known per se by depositing the filaments on a moving sieve base to form a tangled nonwoven and is characterized in that at least 30% by weight of slightly oriented, coarse-titered filaments with a titer of more than 7 dtex are deposited.
  • the blowing nozzles for the filament take-off are adjusted in such a way that these coarse-titer filaments receive a relatively low pre-orientation, which corresponds to a maximum tensile force elongation of at least 80%, preferably at least 100%.
  • the slightly oriented, coarse-titer filaments have maximum tensile strength expansions in the range from 100 to 350%.
  • the individual titer of the coarse-titled, slightly oriented filaments is preferably selected in the range between 8 and 30 dtex and their share in the total weight of the nonwoven between 80 and 100% by weight.
  • the amount of filaments deposited per m 2 is measured according to the criteria given above, usually 50 to 500 g, preferably 100 to 300 g, of filaments are deposited per m 2 .
  • the filament is preferably deposited using a rotating baffle plate and in particular with a downstream guide surface as described, for example, in German Patent Specification 27 13 241.
  • the filament is laid down by several rows of storage elements one behind the other in the direction of movement of the screen support, from which alternately low-orientation, coarse-titer, Filaments and other fibers are deposited.
  • the freshly deposited spunbonded web is consolidated in a manner known per se by mechanical means, for example by needles or by hydrodynamic consolidation by means of fluid jets as described, for example, in EP-A-0 108 621.
  • the filaments and fibers of the thermoformable spunbonded nonwoven according to the invention can in principle consist of all spinnable polymer materials.
  • the polymer material from which the low-orientation, coarse-titer filaments are produced must allow the production of filaments which have a maximum tensile elongation of at least 80, preferably 100, in particular 100 to 350%. There are no such restrictions for the other fibers possibly contained in the nonwovens according to the invention.
  • Preferred polymer raw materials for the production of the deep-drawable nonwovens according to the invention are polyesters, polyamides and polyacrylonitrile. Particularly preferred are polyesters and in particular those which are composed of at least 80% terephthalic acid and ethylene glycol units. In particular, preference is given to a polymer raw material made from pure polyethylene terephthalate or containing at most 5% modifying components.
  • Polyester building blocks which can be contained in the polyesters to be used in addition to terephthalic acid and ethylene glycol, are usually used in spinnable polyesters, e.g. Isophthalic acid, sulfoisophthalic acid, naphthalene carboxylic acids, aromatic hydroxycarboxylic acids, for example p-hydroxybenzoic acid, aliphatic dicarboxylic acids with about 4 to 10 C atoms, for example adipic acid, glycols with 3 to 10 C atoms, diglycol, triglycol or polyglycol.
  • spinnable polyesters e.g. Isophthalic acid, sulfoisophthalic acid, naphthalene carboxylic acids, aromatic hydroxycarboxylic acids, for example p-hydroxybenzoic acid, aliphatic dicarboxylic acids with about 4 to 10 C atoms, for example adipic acid, glycols with 3 to 10 C atoms, diglycol,
  • the present invention also relates to a thermoformable nonwoven of the type described above, which is additionally impregnated with a thermoplastic or thermosetting resin.
  • the thermoplastic or thermosetting resin used is preferably one that stiffens the nonwoven fabric so that it becomes self-supporting.
  • a nonwoven fabric according to the invention is particularly preferred which is impregnated with a known, thermosetting resin, in particular a phenol or melamine resin.
  • the resin pad, ie the pro m 2 of the amount of resin applied depends on the area of application and is preferably dimensioned such that an essentially open-pore nonwoven network results.
  • An open-pore nonwoven network is to be understood as a material which has essentially retained the open-pore structure of the original nonwoven, in which the resin thus only completely or partially encases the individual filaments and forms binding points at the filament crossing points.
  • Suitable application amounts of the resin are in the range from 20 to 80, preferably from 40 to 50,% by weight of the semi-finished product. Within the specified ranges, the amount of resin can be expediently adapted to the m 2 weight of the nonwoven according to the invention. If a heavy nonwoven fabric according to the invention is used, work is preferably carried out in the upper half of the range specified, for light textiles in the lower half. For special applications it can also be advantageous to increase the amount of resin applied so that a resin film remains between the threads of the nonwoven network even in the stretched state.
  • the described resin-impregnated deep-drawable nonwovens according to the invention can be produced without any problems by subjecting the above-described nonwoven to a conventional resin impregnation process.
  • the resin can be applied in the usual way by brushing, brushing, knife coating, slapping or by dipping.
  • the nonwoven fabric loaded with resin is then expediently squeezed onto the desired resin holder by a pair of squeeze rollers.
  • the resin is applied by a "reverse process" in which the resin is first applied evenly to a carrier material.
  • the thermoformable nonwoven fabric according to the invention is then brought into close surface contact with the resinous carrier, the nonwoven fabric sucking the resin from the carrier through its capillary forces.
  • the resin can also be applied in the form of a regular pattern or in an irregular but statistically uniform distribution.
  • the non-resinous surfaces do not become too large, so that the entire non-deformed or three-dimensionally deformed flat structure is still adequately stiffened.
  • An effective statistical resin distribution results, for example, if the resin is applied to a nonwoven fabric according to the invention by the reverse process described above, which shows a layer structure in which there are mostly coarse, slightly oriented filaments, on the other hand predominantly fine titered, normal or strongly oriented filaments .
  • the resin transfer takes place from the coarse-titer side and the coarse-titer filaments draw the majority of the resin and form a particularly effective stiffened support network after the thermoforming and curing of the resin.
  • thermosetting resins are expediently in the commercially available form as highly concentrated aqueous solutions or dispersions.
  • inventive, optionally resin-impregnated, deep-drawable nonwoven fabric can be used with particular advantage for the production of three-dimensionally deformed textile fabrics. These three-dimensional structures are also the subject of the present invention.
  • They consist of a three-dimensionally shaped, open-pore nonwoven fabric, which is characterized in that at least 30% by weight of the filaments are low-orientation, coarse-titered filaments, which, even in the deformed areas, only stretch to below their maximum tensile strength, i.e. are not torn.
  • They contain a relatively coarse-pored support network, which is formed by low-orientation, coarse-titer filaments, which are more stretched in the area of the deformations, and which is optionally additionally stiffened by a thermoplastic or thermosetting resin.
  • the possibly coarse-meshed porous nonwoven fabric with its countless fine openings extends from the relatively coarse openings of the support network, possibly made of other fine-titer filaments .
  • the pores of the deformed nonwoven fabric can also be filled with the thermosetting or thermoplastic resin.
  • FIG. 1 schematically shows a possible shape for a three-dimensionally deformed flat structure (3) according to the invention with a large number of “cups” (5) pulled out of a textile base area (4) (nonwoven fabric).
  • FIG. 2 shows schematically an enlarged representation of one of the “cups” (5) of the structure of FIG. 1.
  • FIGS. 1 and 2 for reasons of clarity and clarity, only that from the slightly oriented, coarse-titer filaments is shown schematically formed support network and in each case only the structure of the faces of the "wells" facing the viewer, but not the rear sides visible through the open-pore nonwoven structure.
  • FIG. 2 schematically shows the open fiber interspaces of the open-pore nonwoven structure particularly clearly.
  • the three-dimensionally deformed sheet-like textile material according to the invention has a large number of elevations on a base surface in a regular arrangement.
  • the three-dimensionally deformed material according to the invention has a plurality of elevations and depressions in a regular arrangement on the level of the base surface.
  • the elevations and depressions can take the form of cups with a round or angular base surface or e.g. of webs, which expediently have a flat plateau or a flat bottom, which are preferably all in one plane and parallel to the base surface.
  • the three-dimensionally deformed sheet-like textile material according to the invention is produced either by subjecting a resin-coated nonwoven fabric according to the invention to a deep-drawing process known per se, or by deep-drawing an un-resinated non-woven fabric according to the invention and then treating the resulting three-dimensionally deformed structure, or by using an resin-free nonwoven fabric together with a resin film appropriate weight per unit area is subjected to the deep-drawing process.
  • Another object of the present invention is a sheet-like sandwich molded body consisting of two outer solid cover layers which are connected via a core consisting of the three-dimensionally deformed, resin-reinforced sheet-like textile material according to the invention described above.
  • the connection between the cover layers and the plateau surfaces of the elevations or the bottom surfaces of the depressions of the core material according to the invention can be achieved by conventional lamination processes using adhesives, in particular cold or heat-curing adhesives such as e.g. Epoxy resins or thermosetting resins are used. Due to the large contact area between the core material and the cover layers, the bond proves to be extremely stable.
  • the sandwich moldings produced therewith have a surprisingly high compressive strength with extremely low weight. They are therefore ideal as a material for the interior of vehicle, especially airframe.
  • three-dimensionally deformed textile nonwovens made of flame-retardant filament material are particularly preferred.
  • FIG. 3 shows a sandwich construction (6) with the top surfaces (7) and (8) and a core (9) made of a three-dimensionally deformed flat structure according to the invention.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Prostheses (AREA)
  • Adornments (AREA)
  • Reinforced Plastic Materials (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP91112815A 1990-08-02 1991-07-30 Matière textile emboutie et pièces moulées obtenues. Expired - Lifetime EP0469558B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024510A DE4024510A1 (de) 1990-08-02 1990-08-02 Tiefziehfaehiges textilmaterial und daraus hergestellte formkoerper
DE4024510 1990-08-02

Publications (2)

Publication Number Publication Date
EP0469558A1 true EP0469558A1 (fr) 1992-02-05
EP0469558B1 EP0469558B1 (fr) 1995-10-11

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EP91112815A Expired - Lifetime EP0469558B1 (fr) 1990-08-02 1991-07-30 Matière textile emboutie et pièces moulées obtenues.

Country Status (6)

Country Link
EP (1) EP0469558B1 (fr)
JP (1) JPH04240256A (fr)
AT (1) ATE129033T1 (fr)
DE (1) DE4024510A1 (fr)
IE (1) IE912742A1 (fr)
PT (1) PT98548A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997024916A3 (fr) * 1995-12-22 1997-08-21 Hoechst Celanese Corp Reseau tridimensionnel de fibres thermoplastiques
WO1999026774A1 (fr) * 1997-11-24 1999-06-03 Hna Holdings, Inc. Structures rigides a reseau fibreux avec proprietes ameliorees de recuperation dimensionnelle apres production, leurs procedes de production et articles les utilisant
US6536052B2 (en) 2000-12-04 2003-03-25 Lucky Bell Plastic Factory Ltd. Safety helmets with cellular textile composite structure as energy absorber
WO2018237117A1 (fr) * 2017-06-22 2018-12-27 Sabic Global Technologies B.V. Noyau pour structure sandwich

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Publication number Priority date Publication date Assignee Title
JP4075131B2 (ja) * 1998-04-27 2008-04-16 株式会社柏木モールド 使い捨てヘアブラシの製造方法及び製造装置
JP4067283B2 (ja) * 2001-04-10 2008-03-26 株式会社シンデン 成形品の製造方法及び成形品
US7060344B2 (en) * 2003-05-05 2006-06-13 North Carolina State University Three-dimensional deep molded structures with enhanced properties
JP6782582B2 (ja) * 2015-08-28 2020-11-11 帝人株式会社 繊維強化複合材料成形体およびその製造方法
MX364036B (es) * 2015-09-09 2019-04-11 Nissan Motor Metodo de fabricacion para material compuesto y aparato de fabricacion para material compuesto.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729867B1 (de) * 1964-12-23 1971-07-29 Lutravil Spinnvlies Verfahren zur Herstellung von verformbarem Kunstleder
DE2834438A1 (de) * 1978-08-05 1980-02-14 Freudenberg Carl Fa Spinnvliesstoff aus polyester-filamenten zur verwendung als traegermaterial fuer einen tiefziehfaehigen tufting-teppich
EP0013355A1 (fr) * 1979-01-11 1980-07-23 Chemie Linz Aktiengesellschaft Procédé de fabrication de nappes de filage
FR2465817A1 (fr) * 1979-09-18 1981-03-27 Freudenberg Carl Procede de fabrication de pieces preformees embouties a partir d'un textile non tisse
DE3844458A1 (de) * 1988-12-31 1990-07-05 Hoechst Ag Tiefziehfaehiges textilmaterial und daraus hergestellte formkoerper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729867B1 (de) * 1964-12-23 1971-07-29 Lutravil Spinnvlies Verfahren zur Herstellung von verformbarem Kunstleder
DE2834438A1 (de) * 1978-08-05 1980-02-14 Freudenberg Carl Fa Spinnvliesstoff aus polyester-filamenten zur verwendung als traegermaterial fuer einen tiefziehfaehigen tufting-teppich
EP0013355A1 (fr) * 1979-01-11 1980-07-23 Chemie Linz Aktiengesellschaft Procédé de fabrication de nappes de filage
FR2465817A1 (fr) * 1979-09-18 1981-03-27 Freudenberg Carl Procede de fabrication de pieces preformees embouties a partir d'un textile non tisse
DE3844458A1 (de) * 1988-12-31 1990-07-05 Hoechst Ag Tiefziehfaehiges textilmaterial und daraus hergestellte formkoerper

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997024916A3 (fr) * 1995-12-22 1997-08-21 Hoechst Celanese Corp Reseau tridimensionnel de fibres thermoplastiques
US5731062A (en) * 1995-12-22 1998-03-24 Hoechst Celanese Corp Thermoplastic three-dimensional fiber network
US6007898A (en) * 1995-12-22 1999-12-28 Hna Holdings, Inc. Thermoplastic three-dimensional fiber network
WO1999026774A1 (fr) * 1997-11-24 1999-06-03 Hna Holdings, Inc. Structures rigides a reseau fibreux avec proprietes ameliorees de recuperation dimensionnelle apres production, leurs procedes de production et articles les utilisant
US6403196B1 (en) 1997-11-24 2002-06-11 North Carolina State University Rigid fiber network structures having improved post-yield dimensional recovery, method of making same, and articles incorporating same
US6536052B2 (en) 2000-12-04 2003-03-25 Lucky Bell Plastic Factory Ltd. Safety helmets with cellular textile composite structure as energy absorber
WO2018237117A1 (fr) * 2017-06-22 2018-12-27 Sabic Global Technologies B.V. Noyau pour structure sandwich

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PT98548A (pt) 1993-09-30
ATE129033T1 (de) 1995-10-15
DE4024510A1 (de) 1992-02-06
EP0469558B1 (fr) 1995-10-11
IE912742A1 (en) 1992-02-12
JPH04240256A (ja) 1992-08-27

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