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DE19544451C2 - Sandwichplatten - Google Patents

Sandwichplatten

Info

Publication number
DE19544451C2
DE19544451C2 DE19544451A DE19544451A DE19544451C2 DE 19544451 C2 DE19544451 C2 DE 19544451C2 DE 19544451 A DE19544451 A DE 19544451A DE 19544451 A DE19544451 A DE 19544451A DE 19544451 C2 DE19544451 C2 DE 19544451C2
Authority
DE
Germany
Prior art keywords
core layer
foam
polypropylene
sandwich plates
sandwich panels
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 - Lifetime
Application number
DE19544451A
Other languages
English (en)
Other versions
DE19544451A1 (de
Inventor
Claus Molitor
Dieter Urban
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DE19544451A priority Critical patent/DE19544451C2/de
Publication of DE19544451A1 publication Critical patent/DE19544451A1/de
Application granted granted Critical
Publication of DE19544451C2 publication Critical patent/DE19544451C2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/086—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of pure plastics material, e.g. foam 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
    • 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
    • B32B5/245—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 being a foam layer
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B5/18—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 features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/01—Liners for load platforms or load compartments
    • 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
    • E04C2/20—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 of plastics
    • E04C2/205—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 of plastics of foamed plastics, or of plastics and foamed plastics, optionally reinforced
    • 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
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/296—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/043—Skinned foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • 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
    • B32B2607/00—Walls, panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)

Description

Die Erfindung betrifft Sandwichplatten aus einer Polypropylenschaum-Kernschicht und Deckschichten aus glasmattenverstärktem Polypropylen.
Für viele Anwendungszwecke besteht Bedarf an Leichtbauteilen, die neben einem geringen Gewicht und einem niedrigen Preis eine sehr gute Festigkeit und Stei­ figkeit aufweisen und außerdem einfach recyclierbar sein sollen.
Diese Anforderungen werden von den erfindungsge­ mäßen Sandwichplatten erfüllt. Sie bestehen aus
  • A) einer Kernschicht aus Polypropylen-Partikel­ schaum einer Dichte von 0,02 bis 0,10 g.cm3 und
  • B) zwei Deckschichten aus glasmattenverstärktem Polypropylen mit einem Fasergehalt von 20 bis 60 Gew.-%.
Die erfindungsgemäße Kernschicht A besteht aus ei­ nem Partikelschaumstoff auf Basis eines Homo- oder Copolymeren des Propylens. Vorzugsweise werden Propylencopolymere verwendet mit einem Schmelz­ punkt zwischen 125 und 155°C, vorzugsweise zwischen 130 und 150°C. Als Schmelzpunkt gilt dabei das nach der DSC-Methode bestimmte Maximum beim zweiten Aufschmelzen einer Probe (Kristallitschmelzpunkt). Co­ polymerisate des Propylens mit 1 bis 30 Gew.-%, insbe­ sondere 1 bis 6 Gew.-% Ethylen und/oder eines C4- bis C6-α-Olefins sind besonders gut geeignet.
Der Schaumstoff ist ein sogenannter Partikelschaum­ stoff, wie er durch Verschweißen von Schaumstoffparti­ keln üblicherweise mit einem mittleren Durchmesser von 2 bis 8 mm, vorzugsweise 3 bis 6 mm, erhältlich ist. Die Dichte des Schaumstoffs liegt zwischen 0,02 und 0,10 g/cm3, vorzugsweise zwischen 0,03 und 0,08 g/cm3.
Die Dicke der Kernschicht beträgt vorzugsweise 5 bis 100, insbesondere 15 bis 40 mm.
Die erfindungsgemäßen Deckschichten B bestehen aus glasmattenverstärktem Polypropylen. Dieses ent­ hält 20 bis 60, vorzugsweise 30 bis 45 Gew.-% Glasfa­ sern, vorzugsweise in Form von Matten. Die Matten bewirken die hohe Festigkeit des Materials. Die Länge der Glasfasern kann in weiten Grenzen zwischen etwa 2 mm und unendlich schwanken. Bevorzugt sind Matten, die aus geschnittenen Glasfaserrovings einer Länge von 5 bis 25 mm bestehen, und die durch Nadeln verfestigt wurden. Bei der Nadelung werden einige Glasfasern zerschlagen, so daß die genadelte Matte auch Anteile von kürzeren Fasern aufweist.
Das Flächengewicht der Glasfasermatten beträgt vorzugsweise 200 bis 1200 gm-2. Die Deckschichten sind vorzugsweise 1 bis 10, insbesondere 2 bis 5 mm dick.
Die Herstellung der erfindungsgemäßen Sandwich­ platten geschieht zweckmäßigerweise durch Verpres­ sen von auf Temperaturen von etwa 210°C vorerhitzten Deckschichten mit der Kernschicht. Grundsätzlich kön­ nen die Schichten aber auch miteinander verklebt wer­ den.
Die erfindungsgemäßen Schichtstoffe können z. B. als Schalelemente in der Bauindustrie oder als Automobil­ teile, z. B. Ladeboden, Wärmedämmelemente oder schallabsorbierende Strukturbauteile verwendet wer­ den.

Claims (2)

1. Sandwichplatten, bestehend aus
  • A) einer Kernschicht aus Polypropylen-Parti­ kelschaum mit einer Dichte von 0,02 bis 0,10 g.cm3 und
  • B) zwei Deckschichten aus glasmattenver­ stärktem Polypropylen mit einem Fasergehalt von 20 bis 60 Gew.-%.
2. Sandwichplatten nach Anspruch 1, dadurch ge­ kennzeichnet, daß die Kernschicht A 5 bis 100 mm dick ist und die Deckschichten 1 bis 10 mm dick sind.
DE19544451A 1995-11-29 1995-11-29 Sandwichplatten Expired - Lifetime DE19544451C2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19544451A DE19544451C2 (de) 1995-11-29 1995-11-29 Sandwichplatten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19544451A DE19544451C2 (de) 1995-11-29 1995-11-29 Sandwichplatten

Publications (2)

Publication Number Publication Date
DE19544451A1 DE19544451A1 (de) 1997-06-05
DE19544451C2 true DE19544451C2 (de) 2002-10-02

Family

ID=7778679

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19544451A Expired - Lifetime DE19544451C2 (de) 1995-11-29 1995-11-29 Sandwichplatten

Country Status (1)

Country Link
DE (1) DE19544451C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10246039A1 (de) * 2002-10-02 2004-05-19 Wihag Nutzfahrzeugtechnik Gmbh & Co Kg Bausatz für ein Gebäude
DE10310368A1 (de) * 2003-03-10 2004-10-07 Webasto Vehicle Systems International Gmbh Ladeboden

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819750C2 (de) 1998-05-02 2001-12-13 Fraunhofer Ges Forschung Verbundwerkstoff und Verfahren zu seiner Herstellung
JP2002012093A (ja) * 2000-04-24 2002-01-15 Oji Paper Co Ltd 自動車内装天井成形用部材及びこれを用いた自動車内装天井部材
EP1036650A3 (de) * 1999-03-16 2000-11-22 G & L Industries, Inc. Laminiertes Holzerzeugnis zur Verwendung als Laderaumabdeckung für Sport-Nutzfahrzeuge
DE19959652A1 (de) * 1999-12-10 2001-06-13 Basf Ag Sandwichplatte
WO2002066758A1 (de) * 2001-02-21 2002-08-29 Sika Schweiz Ag Vorgefertigtes bauelement für gebäude
JP2003146051A (ja) * 2001-11-09 2003-05-21 Oji Paper Co Ltd 自動車用エアダクト
DE10253825A1 (de) * 2002-11-18 2004-05-27 Fagerdala Deutschland Gmbh Verfahren zur Herstellung eines Werkstoffverbundes
PT1426179E (pt) 2002-12-06 2009-05-11 Mondo Spa Folha em material sintético para estabilizar coberturas
DE20302787U1 (de) * 2003-02-20 2004-04-08 Karodur-Wirkteller Gmbh Bauelement
DE10342613A1 (de) * 2003-09-12 2005-04-14 Seeber Ag & Co. Kg Mehrschichtiges Verkleidungsteil für ein Kraftfahrzeug
DE102006060284A1 (de) * 2006-12-20 2008-07-03 Construction Research & Technology Gmbh Gewebearmiertes Hartschaumträgerelement und dessen Verwendung
DE102013005033A1 (de) * 2012-08-14 2014-02-20 Claudia Plikat Sandwichelement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048836A2 (de) * 1980-10-01 1982-04-07 Hüls Troisdorf Aktiengesellschaft Verfahren und Vorrichtung zum kontinuierlichen Herstellen eines bahnförmigen Schichtmaterials aus Schaumstoffteilchen
DE3126242A1 (de) * 1981-07-03 1983-01-20 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "formteil in sandwichbauweise und halbzeug zur herstellung desselben"
DE4141113A1 (de) * 1991-12-13 1993-06-17 Hornschuch Ag K Grossflaechige verkleidungsteile aus thermoplastischen kunststoffen fuer dfen kfz-innenbereich und verfahren zu deren herstellung
DE4320636A1 (de) * 1993-06-22 1995-01-05 Ymos Ag Ind Produkte Verkleidungsteil
DE4442014A1 (de) * 1993-11-29 1995-06-01 Greiner & Soehne C A Mehrlagiges Bauelement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048836A2 (de) * 1980-10-01 1982-04-07 Hüls Troisdorf Aktiengesellschaft Verfahren und Vorrichtung zum kontinuierlichen Herstellen eines bahnförmigen Schichtmaterials aus Schaumstoffteilchen
DE3126242A1 (de) * 1981-07-03 1983-01-20 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "formteil in sandwichbauweise und halbzeug zur herstellung desselben"
DE4141113A1 (de) * 1991-12-13 1993-06-17 Hornschuch Ag K Grossflaechige verkleidungsteile aus thermoplastischen kunststoffen fuer dfen kfz-innenbereich und verfahren zu deren herstellung
DE4320636A1 (de) * 1993-06-22 1995-01-05 Ymos Ag Ind Produkte Verkleidungsteil
DE4442014A1 (de) * 1993-11-29 1995-06-01 Greiner & Soehne C A Mehrlagiges Bauelement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10246039A1 (de) * 2002-10-02 2004-05-19 Wihag Nutzfahrzeugtechnik Gmbh & Co Kg Bausatz für ein Gebäude
DE10246039B4 (de) * 2002-10-02 2005-07-14 Wihag Nutzfahrzeugtechnik Gmbh & Co Kg Bausatz für ein Gebäude
DE10310368A1 (de) * 2003-03-10 2004-10-07 Webasto Vehicle Systems International Gmbh Ladeboden

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Publication number Publication date
DE19544451A1 (de) 1997-06-05

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BASF SE, 67063 LUDWIGSHAFEN, DE

R071 Expiry of right