DE2106729C3 - Verwendung von Kombinations-Vliesen für die Herstellung von Schaumstoff-Form körpern - Google Patents

Verwendung von Kombinations-Vliesen für die Herstellung von Schaumstoff-Form körpern

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Publication number
DE2106729C3
DE2106729C3 DE2106729A DE2106729A DE2106729C3 DE 2106729 C3 DE2106729 C3 DE 2106729C3 DE 2106729 A DE2106729 A DE 2106729A DE 2106729 A DE2106729 A DE 2106729A DE 2106729 C3 DE2106729 C3 DE 2106729C3
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Germany
Prior art keywords
fleece
denier
fine
sandwich
coarse
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.)
Expired
Application number
DE2106729A
Other languages
English (en)
Other versions
DE2106729B2 (de
DE2106729A1 (de
Inventor
Peter Dipl.-Ing. 5210 Troisdorf Hoppe
Helmut 5670 Opladen Leyer
Johann 5000 Koeln Mueller
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.)
Bayer AG
Original Assignee
Bayer AG
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.)
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Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DE2106729A priority Critical patent/DE2106729C3/de
Priority to AT107372A priority patent/AT320295B/de
Priority to IT20461/72A priority patent/IT960152B/it
Priority to US225666A priority patent/US3869337A/en
Priority to FR7204709A priority patent/FR2125408B1/fr
Priority to NL7201848A priority patent/NL7201848A/xx
Priority to SE01665/72A priority patent/SE366682B/xx
Priority to CH195972A priority patent/CH544175A/de
Priority to DK63872A priority patent/DK137808C/da
Priority to BE779275A priority patent/BE779275A/xx
Priority to GB648772A priority patent/GB1339237A/en
Publication of DE2106729A1 publication Critical patent/DE2106729A1/de
Publication of DE2106729B2 publication Critical patent/DE2106729B2/de
Application granted granted Critical
Publication of DE2106729C3 publication Critical patent/DE2106729C3/de
Expired 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
    • 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
    • D04H1/4391—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 characterised by the shape of the fibres
    • D04H1/43918—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 characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
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    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
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    • 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
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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    • 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
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    • D04H1/43—Acrylonitrile series
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    • 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
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    • D04H1/4334—Polyamides
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    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/4374—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 using different kinds of webs, e.g. by layering webs
    • 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
    • D04H1/498—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 entanglement of layered webs
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—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 by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • 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
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    • D04H1/64—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/68—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions the bonding agent being applied in the form of foam
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/08—Reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2909—Nonlinear [e.g., crimped, coiled, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T442/608—Including strand or fiber material which is of specific structural definition
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

reich des faserfreien Kernes ein Raumgewicht von 50 kg/m* besitzt.
So ist beispielsweise für eine Glasfaser-Kunststoff-Deckschicht von 1 mm Dicke und Ε-Modul von 0,1 · 10· kp/cm2 unter Beibehaltung des grobtitrigen Vlieses von 150 g/ma ein feintitriges Vlies aus Polyesterfasern (dtex 5) von 200 g/m2 notwendig, um für ein Schaumstoff-Gesamtraumgewicht von 100 kg/m3 (als StOtzstoff) eine Knitterfestigkeit der Deckschicht gleich Materialfestigkeit zu erzielen.
Für eine Stahldeckschicht von 0,2 mm Dicke und einem Ε-Modul von 2,1 · 10" kp/cma und einer Streckgrenze von 6000 kp/cma wird unter Beibehaltung der grobtitrigen Vlieskomponente von 150 g/m* ein feintitriges Vlies aus Polyesterfasern (dtex 5) von 200 g/m2 gewählt, um für ein Stützstoff-Gesamtraumgewicht (Füllgewicht) von 120 kg/ms wiederum eine Knitterfestigkeit der Deckschicht gleich Streckgrenze zu erreichen.
Die Herstellung der Kombinationsvliese für oberflächig armierte Schaumstoff-Formkörper oder für oberflächig armierte Kernlagen von Sandwichkonstruktionen wird bevorzugt eo durchgeführt, daß man auf das Vlies aus grobtitrigen, gekräuselten Polyamid-ίο fasern einseitig ein Vlies aus feintitrigen Fasern oder Fäden nadelt.
Die durchschäumbare Vlieskombination ist für alle harten, halbharten und weichen Schaumstoff-Systeme geeignet, die aus einem flüssigen und treibfähigen Reaktionsgemisch erzeugt werden.

Claims (1)

1 *" 2 40 bis 100 dtex, und das ms-Gewicht des Vlieses aus Patentansprüche: den grobtitrigen gekräuselten Polyamidfasern liegt zwischen 80 und 200 g. Der Titer der Fasern bzw.
1. Verwendung von Vliesen für oberflächig Fäden des feintitrigen Vlieses liegt zwischen 2 und armierte Stützkerne von Sandwich-Konstruktionen, 5 10 dtex und das ms-Gewicht zwischen 50 und 500 g. dadurch gekennzeichnet, daß Korn- Für die feintitrigen Vliese werden Fäden oder binationsvliese verwendet werden, die aus einem Fasern aus Polyacrylnitril, Polyestern oder PoIy-
1, Vlies mit einem Quadratmetergewicht von 80 bis amiden verwendet, wobei die daraus hergestellten 200 g/m* aus grobtitrigen, gekräuselten Polyamid- Vliese unter den Bedingungen des Verschäumungsverfasem im Titerbereich von 40 bis 100 dtex, das ein- 10 fahrens eiue gute Imprägnierfähigkeit besitzen,
seitig mit einem 2. Vlies mit einem Quadratmeter- Durch die Verwendung dieser Vlieskombination, gewicht von 50 bis 500 g/m2 aus Fasern oder Fäden die stets mit feintitriger Schicht zur Oberfläche des im Titerbereich von 2 bis 10 dtex belegt und fest Formkörpers oder des Stützkernes hin montiert wird, verbunden ist, bestehen. ist die satte Einbettung des gut durchschäumbaren
2. Verwendung von Vliesen gemäß Anspruch 1, 15 grobtitrigen Kräuselvlieses im nassen Glasfaserdadurch gekennzeichnet, daß das 1. Vlies mit dem Kunststoff-System oder auf mit geeigneten noch nicht
2. Vlies vernadelt ist. ausreagierten Klebstoffen vorbehandelten Sandwich-
Deckschichten gewährleistet, da dem sehr offenporigen Kräuselvlies einseitig ein sehr feintitriges VÜes mit
20 hoher Saugfähigkeit zugeordnet ist, das von der reaktionsfähigen Formen-Vorspritzung oder vom noch nassen Glasfaser-Kunststoff-System (GFK) oder von
Vliese aus grobtitrigen, gekräuselten Polyamidfasern noch nicht ausreagierten Klebervorstrichen auf hochsind als Randzonenarmierungssystem für die Schaum- festen Deckschichten zu V10 b's V2 seiner Dicke durchstoff-Stützkerne von Sandwichkonstruktionen mit z. B. 25 imprägniert wird.
hochfesten Deckschichten aus Metall bekannt. Die Für die erfindungsgemäße Verwendung der Kombi-Anwendung des grobtitrigen Kräuselvlieses als Rand- nation von fein- und grobtitrigen Vliesen zur Erzeuzonenarmierung von Schaumstoff-Stützkernen für gung von oberflächenarmierten harten, halbharten und Sandwichkonstruktionen ist erwünscht, um eine gute weichen Schaumstoff-Stützkernen für Sandwich-Kon-Tiefenverankerung der hochbeanspruchten Sandwich- 30 struktionen sind je nach gewünschten Eigenschaften Deckschicht im Schaumstoff-Stützkern zu erreichen, verschiedenartige Vlieskombinationen einzusetzen. Dawobei beim Ausschäumprozeß des vorgefertigten bei hängt die Art der Vlieskombinationen davon ab, Deckschicht-Hohlkörpers, der zur Schäumseite hin welche Aufgabe der zu erstellenden Schaumstoffmit dem grobtitrigen Vlies beklebt wurde, die Steifig- Formkörper oder die zu erstellende Sandwich-Konkeit des grobtitrigen Vlies-Einzelfadens einer Posi- 35 struktion (rrit Schaumstoff-Stützkern) zu übernehmen tionsveränderung unter dem auftreibenden und sahni- hat. Er kann eine konstruktive Aufgabe haben und ger und viskoser werdenden Reaktionsgemisches hoher statischen und dynamischen Belastung unterwidersteht, worfen sein. Er kann einer kurzfristig wirkenden
Die sichere Einbettung des gut durchschäambaren schlagartigen Beanspruchung unte/worfen werden, Polyamid-Kräuselvlieses in noch nasse reaktionsfähige 40 wie es z. B. für stabile Fahrzeugkonstruktionen oder Formen-Vorspriizungen oder in noch nasse Glasfaser- für Fahrzeuginnenpolsterungen gefordert wird.
Kunststoff-Systeme (GFK) oder auf mit geeigneten Während zur Erzielung einer guten Tiefenverankenoch nicht ausreagierten Klebstoffen vorbehandelte rung eine mit feintitrigem Vlies armierte Schaumstofffesten Sandwich-Deckschichten beispielsweise aus Me- Formkörperoberfläche oder zur guten Tiefenveranketall oder aus Kunststoffen auf Basis von ausgehärteten, 45 rung einer hochfesten dichten Sandwich-Deckschicht .glasfaserverstärkten Polyadditions-Produkten bereitet aus Metall, Sperrholz oder glasfaserverstärkter Gießdurch die an sich erwünschte Eigensteifigkeit der Vlies- harze das grobtitrige Vlies ein m2-Gewicht von nur Einzelfaser gewisse Schwierigkeiten, da sich nach An- 80 bis 200 g haben soll, ist das m2-Gewicht des zur drücken des Vlieses (z. B. von Hand oder mittels Vlieskombination gehörenden feintitrigen Vlieses sehr Laminier-Rollen) in die noch nasse Formen-Vor- 50 wesentlich von der Aufgabenstellung für das zu erspritzung oder in die noch nasse GFK-Schicht oder in zeugende Bauteil abhängig und kann 50 bis 500 g bedie Kleberschicht das Vlies wieder aufrichtet und nur tragen.
zu einem geringen und nicht immer kontrollierbarem Das zu wählende m2-Gewicht eines feintitrigen Prozentsatz im Bereich herausragender Füßchen im Vlieses der Vlieskombination beträgt beispielsweise Kleber fixiert bleibt. Beim nachfolgenden Ausschäum- 55 100 g, wenn eine thermoplastische Sandwich-Deckprozeß besteht in manchen Fällen die Gefahr des Ab- schicht von 1 mm Dicke und einen Ε-Modul von schwimmens der Randzonen-Armierung des Stütz- 0,025 · 10° kp/cm2 mit einem randzonenarmierten kernes, und die gleichzeitig erwünschte Tiefenveranke- Schaumstoff-Stützkern im Ausschäum-Verfahren komrung der Sandwich-Deckschicht im Stützkern wird in biniert wird. Dieses Gewicht des feintitrigen Vlieses Frage gestellt. 60 aus Polyacrylnitrilfasern (dtex 5) in Kombination mit
Es wurde daher die Verwendung eines Kombi- einer 150 g/m2 grobtitrigen Polyamidfaservlies-Auflage nations-Vlieses für oberflächlich armierte Schaum- (dtex 80) führt zu einer Stabilisierung der Deckschicht stoff-Formkörper oder für oberflächlich armierte gegen Knitterbruch bis zur Materialfestigkeit, wobei Stützkerne von Sandwich-Konstruktionen vorgeschla- ein Schaumstoff-Raumgewicht (Füllgewicht) für gen, das aus einem Vlies aus grobtitrigen, gekräuselten 65 80 kg/m3 eingefahren wurde und der erzeugte Stützkern Polyamidfasern besteht, welches einseitig mit einem im Bereich der feintitrigen Vliesarmierung ein Raum-Vlies aus feintitrigen Fasern oder Fäden belegt und gewicht von 180 kg/m3, im Bereich des grobtitrigen fest verbunden ist. Der Titer der Polyamidfaser beträgt Vlieses ein Raumgewicht von 80 kgp/m3 und im Be-
DE2106729A 1971-02-12 1971-02-12 Verwendung von Kombinations-Vliesen für die Herstellung von Schaumstoff-Form körpern Expired DE2106729C3 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE2106729A DE2106729C3 (de) 1971-02-12 1971-02-12 Verwendung von Kombinations-Vliesen für die Herstellung von Schaumstoff-Form körpern
IT20461/72A IT960152B (it) 1971-02-12 1972-02-10 Feltri compositi non tessuti e articoli di materiale plastico espanso rinforzati con essi
AT107372A AT320295B (de) 1971-02-12 1972-02-10 Oberflächiges Armierungssystem für Schaumstoff-Formkörper oder Schaumstoff-Kernlagen für Sandwich-Konstruktionen
FR7204709A FR2125408B1 (de) 1971-02-12 1972-02-11
NL7201848A NL7201848A (de) 1971-02-12 1972-02-11
SE01665/72A SE366682B (de) 1971-02-12 1972-02-11
US225666A US3869337A (en) 1971-02-12 1972-02-11 Composite non-woven mats and foam plastic articles reinforced therewith
CH195972A CH544175A (de) 1971-02-12 1972-02-11 Faservlies
DK63872A DK137808C (da) 1971-02-12 1972-02-11 Kombinationsflor bestaaende af to forskellige florlag til overfladearmerede stoettekerner i sandwich-konstruktioner
BE779275A BE779275A (fr) 1971-02-12 1972-02-11 Nappes non tissees composites et articles en matiere plastique cellulaire renforces avec celles-ci
GB648772A GB1339237A (en) 1971-02-12 1972-02-11 Composite nonwoven mats and foam plastic articles reinforced therewith

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Application Number Priority Date Filing Date Title
DE2106729A DE2106729C3 (de) 1971-02-12 1971-02-12 Verwendung von Kombinations-Vliesen für die Herstellung von Schaumstoff-Form körpern

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DE2106729B2 DE2106729B2 (de) 1975-01-09
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AT (1) AT320295B (de)
BE (1) BE779275A (de)
CH (1) CH544175A (de)
DE (1) DE2106729C3 (de)
DK (1) DK137808C (de)
FR (1) FR2125408B1 (de)
GB (1) GB1339237A (de)
IT (1) IT960152B (de)
NL (1) NL7201848A (de)
SE (1) SE366682B (de)

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JP2581358B2 (ja) * 1991-10-31 1997-02-12 住友化学工業株式会社 積層成形品およびその製造方法
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DK137808B (da) 1978-05-08
DK137808C (da) 1978-10-16
DE2106729B2 (de) 1975-01-09
AT320295B (de) 1975-02-10
BE779275A (fr) 1972-08-11
IT960152B (it) 1973-11-20
FR2125408B1 (de) 1976-01-16
SE366682B (de) 1974-05-06
US3869337A (en) 1975-03-04
FR2125408A1 (de) 1972-09-29
DE2106729A1 (de) 1972-08-24
NL7201848A (de) 1972-08-15
CH544175A (de) 1973-11-15
GB1339237A (en) 1973-11-28

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