DE2123975C3 - Heavy-duty foam body - Google Patents

Heavy-duty foam body

Info

Publication number
DE2123975C3
DE2123975C3 DE2123975A DE2123975A DE2123975C3 DE 2123975 C3 DE2123975 C3 DE 2123975C3 DE 2123975 A DE2123975 A DE 2123975A DE 2123975 A DE2123975 A DE 2123975A DE 2123975 C3 DE2123975 C3 DE 2123975C3
Authority
DE
Germany
Prior art keywords
reinforcement
edge zone
layer
foam body
heavy
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
DE2123975A
Other languages
German (de)
Other versions
DE2123975B2 (en
DE2123975A1 (en
Inventor
Gustav Dr. 5060 Bensberg Drouven
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.)
Filing date
Publication date
Priority to DE2123975A priority Critical patent/DE2123975C3/en
Application filed by Bayer AG filed Critical Bayer AG
Priority to GB2230072A priority patent/GB1385208A/en
Priority to AT417572A priority patent/AT312944B/en
Priority to IT24268/72A priority patent/IT1012026B/en
Priority to JP4653672A priority patent/JPS5543912B1/ja
Priority to FR7217039A priority patent/FR2137830B2/fr
Publication of DE2123975A1 publication Critical patent/DE2123975A1/en
Priority to US05/473,958 priority patent/US3940524A/en
Publication of DE2123975B2 publication Critical patent/DE2123975B2/de
Application granted granted Critical
Publication of DE2123975C3 publication Critical patent/DE2123975C3/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • 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
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2266/0278—Polyurethane
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/08—Reinforcements

Landscapes

  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

Das Hauptpatent bezieht sich auf einen hochbeanspruchbaren Schaumstoffkörpe,-, insbesondere aus Polyurethan mit einem Schaumkern mit einer diesen umgebenden Deckschicht, deren Innenseite mit einer faserförmigen, gegebenenfalls aus mehreren Lagen bestehenden und im wesentlichen in der Randzone des Schaumkernes angeordneten Verstärkungseinlage verbunden ist, die mindestens aus einer Armierungsmatte und einem Fasergebilde besteht, wobei eine Vielzahl von Fasern des Fasergebildes durch die Armierungsmatte hindurchreichen und sowohl im Schaumkern als auch in der Deckschicht verankert sind.The main patent relates to a heavy-duty foam body, -, in particular from Polyurethane with a foam core with a covering layer surrounding this, the inside of which with a fibrous, optionally consisting of several layers and essentially in the edge zone of the foam core arranged reinforcement insert is connected, which consists of at least a reinforcement mat and a fiber structure, wherein a A large number of fibers of the fiber structure extend through the reinforcement mat and both in the Foam core and are anchored in the top layer.

Bei dieser Ausführungsform wird nur die Oberfläche der Armierungsmatte von dem Gel-coat durchdrungen bzw. benetzt.In this embodiment, only the surface of the reinforcement mat is covered by the gel coat penetrated or wetted.

Es ist auch bekannt, Armierungslagen in die GeI-coat-Schicht einzubetten und zur Randzonenverstärkung des Schaumstoffkerns innen auf die Gel-coat· Schicht noch Faservliese aufzukleben.It is also known to add reinforcement layers to the gel-coat layer to be embedded and to reinforce the edge zone of the foam core on the inside of the gel coat Glue on another layer of nonwovens.

Bei der ersten Ausführungsform besteht beim Auftreten hoher Schubspannungen die Gefahr des Abreißens der Armierungsmatte von der Oberfläche der Gel-coat-Schicht. Bei der zweiten Ausführungsform gilt diet für die Faservliese.In the first embodiment, if high shear stresses occur, there is a risk of tearing off the reinforcement mat from the surface of the gel coat layer. In the second embodiment applies to the fiber fleece.

Autgabe der Erfindung ist die Verbesserung der Ausführungsform des hochbeanspruchbaren Schaumstoffkörpers gemäß Hauptpatent hinsichtlich der Aufnahmefähigkeit höherer Spannungen.The object of the invention is to improve the embodiment of the heavy-duty foam body according to the main patent with regard to the ability to absorb higher voltages.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß wenigstens eine der Armierungsmatten in die aus einem Gel-coat bestehende Deckschicht vollständig eingebettet ist.This object is achieved in that at least one of the reinforcement mats in the top layer consisting of a gel coat is completely embedded.

Dadurch wird ein elastischer Übergang bei gleichzeitiger Verbindung der Fasern der einzelnen Fasergebildelagen miteinander sowohl gegenüber der Ausführungsform mit eingebetteter Armierungsmatlc und aufgeklebten Faservliesen als auch bei nur oberflächlich in die Gel-coat-Schicht eingedrückten Verstärkungseinlagen erzielt, so daß noch höhere Spannungen aufgenommen werden können.This creates an elastic transition with a simultaneous connection of the fibers of the individual fiber structure layers with each other as compared to the embodiment with embedded reinforcement material and glued-on fiber fleeces as well as reinforcement inserts that are only superficially pressed into the gel coat layer achieved so that even higher voltages can be absorbed.

Gemäß einer Weiterbildung des erfindungsgemäßen Schaumstoffkörpers sind bei 2+n-lagigen Randzonenverstärkungseinlagen wenigstens zwei Lagen in das Gel-coat (9", 9'") eingebettet. Das heißt, daß also nicht nur Armierungsmatten, die beispielsweise aus Geweben, Metallskeletten usw. bestehen, sondem auch Armierungsgebilde (z. B. Faservliese) von dem Gel-coat voll durchdrungen sind. Dadurch wird erreicht, daß auch jegliche Delaminierungsgefahr der Matten oder Gewebe völlig ausgeschaltet ist und die Eigensteifigkeit der erzeugten verstärkten Deckschicht optimiert ist.According to a development of the invention Foam bodies are for 2 + n-layer edge zone reinforcement inserts at least two layers embedded in the gel coat (9 ", 9 '"). That means that not only reinforcement mats, for example consist of fabrics, metal skeletons, etc., but also reinforcement structures (e.g. nonwovens) from are fully penetrated by the gel coat. This will achieved that any risk of delamination of the mats or fabric is completely eliminated and the Rigidity of the generated reinforced top layer is optimized.

Es versteht sich, daß der vom Gel-coat durchdrungene Anteil des Randzonenverstärkungssystems über die gesamte Ausdehnung gesehen unterschiedlich sein kann und zwar entsprechend den vorausberechneten Belastungen für die verschiedenen Stellen des Körpers.It goes without saying that the one penetrated by the gel coat Proportion of the edge zone reinforcement system seen different over the entire extent can be according to the predicted loads for the various points of the Body.

Bezüglich der Wahl von Armierungsmatten und Fasergebilden sei auf die Ausführungen im Hauptpatent verwiesen.Regarding the choice of reinforcement mats and fiber structures, please refer to the statements in the main patent referenced.

«5 Die Gel-coat-Deckschicht kann außenseitig zusätzlich tine beispielsweise metallische Außenhaut aufweisen. «5 The gel coat top layer can also be used on the outside tine have, for example, metallic outer skin.

In der Zeichnung ist der erfindungsgemäße Schaumstoffkörper im Schnitt in mehreren Ausführungsbeispielen dargestellt, und zwar zeigtIn the drawing, the foam body according to the invention is in section in several exemplary embodiments shown, namely shows

F i g. 1 einen Schaumstoffkörper mit einer viertägigen Randzonenverstärkungseinlage,F i g. 1 a foam body with a four-day Edge zone reinforcement insert,

F i g. 2 einen Schaumstoffkörper mit einer achtlagigen Randzonenverstärkungseinlage undF i g. 2 a foam body with an eight-layer edge zone reinforcement insert and

F i g. 3 einen Schaumstoffkörper mit einer vierlagigen Randzonenverstärkungseinlage, bei der die innerste Lage einseitig mit der Gel-coat-Schicht verbunden ist.F i g. 3 a foam body with a four-layer edge zone reinforcement insert, in which the innermost Layer is connected to the gel coat layer on one side.

In F i g. 1 besteht die Randzone Γ aus einer Metailfolie 8' und einer aus einem Gel-coat bestehenden Deckschicht 9'. Eine Randzonenverstärkungseinlage 2' ist aus zwei Armierungsmatten 3' und zwei Fasergebilden (Vliese) 5' aufgebaut. Durch Vernadelung sind eine Anzahl Fasern 4' der Fasergebilde S' durch die Armierungsmatten 3' hindurchgezogen, so daß die Randzonenverstärkungseinlage 2' eine Einheit bildet. Die der Randzone 1' am nächsten gelegene Armierungsmatte 3' ist völlig in die Deckschicht 9' eingebettet. Die übrigen Lagen sind von dem Schaumstoffkern 6' durchdrungen.In Fig. 1, the edge zone Γ consists of a metal foil 8 'and a cover layer 9' consisting of a gel coat. An edge zone reinforcement insert 2 'is made up of two reinforcement mats 3' and two fiber structures (fleeces) 5 '. By needling if a number of fibers 4 'of the fiber structures S' are drawn through the reinforcement mats 3 ', see above that the edge zone reinforcement insert 2 'forms a unit. The one closest to the edge zone 1 ' Reinforcement mat 3 'is completely embedded in the cover layer 9'. The other layers are from that Foam core 6 'penetrated.

In F i g. 2 besteht die Außenhaut 1" nur aus einer Gel-coat-Deckschicht 9". Sie ist entsprechend stärker gestaltet als im Ausführungsbeispiel gemäß F i g. 1. Von ihr sind vier Lagen der Randzonenverstärkungseinlage 2" durchdrungen, nämlich zwei Armierungsmatten 3" und zwei Fasergebilde 5". Auch hier sind die Lagen durch Vernadeln über Fasern 4' zu einer Einheit verbunden.
Vier weitere Lagen der Randzonenverstärkungseinlage 2" sind vom Hartschaumstoffkern 6" durchschäumt. In Fig. 2, the outer skin 1 ″ consists only of a gel coat top layer 9 ″. It is designed to be correspondingly stronger than in the exemplary embodiment according to FIG. 1. Four layers of the edge zone reinforcement insert 2 ″ are penetrated by it, namely two reinforcement mats 3 ″ and two fiber structures 5 ″.
Four further layers of the edge zone reinforcement insert 2 ″ are foamed through by the rigid foam core 6 ″.

In Fig. 3 sind fünf Lagen der Randzonenverstärkungseinlage 3'" in die Gel-coat-Deckschicht 9'", die allein die Deckschicht 1'" darstellt, eingebettet, und die innerste Fasergebildelage 5'" ist einseitig in der Gel-coat-Deckschicht 9'" fixiert, während ihr übriger Teil durchschäumt ist.In Fig. 3 there are five layers of the edge zone reinforcement insert 3 '"in the gel-coat top layer 9'", which alone represents the top layer 1 '", embedded, and the innermost fiber structure layer 5 '"is fixed on one side in the gel-coat top layer 9'", while the rest of it Part is foamed through.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Hochbeanspruchbarer Schaumstoffkörpei·, insbesondere aus Polyurethan mit einem Schaumkern mit einer diesen umgebenden Deckschicht, deren Innenseite mit einer faserförmigen, gegebenenfalls aus mehreren Lagen bestehenden und im wesentlichen in der Randzone des Schaumstoffkernes angeordneten Verstärkungseinlage verbunden ist, die mindestens aus einer Armierungsmatte und einem Fasergebilde besteht, wobei eine Vielzahl von Fasern des Fasergebildes durch die Armierungsmatte hindurchreichen und sowohl im Schaumkern als auch in der Deckschicht verankert sied, nach Patent 1704 642, dadurch gekennzeichnet, daß wenigstens eine der Armierungsmatten (3', 3", 3"') in die aus einem Gel-coat bestehende Deckschicht {9', 9", 9'") vollständig eingebettet ist.1. Heavy-duty foam body, in particular made of polyurethane with a foam core with a covering layer surrounding this, the inside of which with a fibrous, optionally consisting of several layers and essentially in the edge zone of the foam core arranged reinforcement insert is connected, which consists of at least one reinforcement mat and a fiber structure, wherein a plurality of fibers of the fiber structure through the Reach through the reinforcement mat and anchor it in both the foam core and the top layer boiled, according to patent 1704 642, characterized in that at least one of the Reinforcement mats (3 ', 3 ", 3"') in the top layer consisting of a gel coat {9 ', 9 ", 9'") is fully embedded. 2. Schaumstoff körper nach Anspruch 1, dadurch gekennzeichnet, daß bei 2 + n-lagigen Randzonenverstärkungseinlagen (2") wenigstens zwei Lagen in die Deckschicht (9",9'") eingebettet sind.2. Foam body according to claim 1, characterized in that at 2 + n-ply Edge zone reinforcement inserts (2 ") are embedded in at least two layers in the cover layer (9", 9 '") are.
DE2123975A 1967-07-04 1971-05-14 Heavy-duty foam body Expired DE2123975C3 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE2123975A DE2123975C3 (en) 1971-05-14 1971-05-14 Heavy-duty foam body
AT417572A AT312944B (en) 1967-07-04 1972-05-12 Heavy-duty foam body
IT24268/72A IT1012026B (en) 1971-05-14 1972-05-12 BODIES OF EXPANDED MATERIAL WITH A HIGH DEGREE OF STRESSABILITY
JP4653672A JPS5543912B1 (en) 1971-05-14 1972-05-12
GB2230072A GB1385208A (en) 1971-05-14 1972-05-12 Article comprising foam plastics covered with an outer surface layer
FR7217039A FR2137830B2 (en) 1971-05-14 1972-05-12
US05/473,958 US3940524A (en) 1971-05-14 1974-05-28 Article comprising foam plastic covered with an outer surface strengthening layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2123975A DE2123975C3 (en) 1971-05-14 1971-05-14 Heavy-duty foam body

Publications (3)

Publication Number Publication Date
DE2123975A1 DE2123975A1 (en) 1972-11-16
DE2123975B2 DE2123975B2 (en) 1975-01-23
DE2123975C3 true DE2123975C3 (en) 1975-09-25

Family

ID=5807877

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2123975A Expired DE2123975C3 (en) 1967-07-04 1971-05-14 Heavy-duty foam body

Country Status (5)

Country Link
JP (1) JPS5543912B1 (en)
DE (1) DE2123975C3 (en)
FR (1) FR2137830B2 (en)
GB (1) GB1385208A (en)
IT (1) IT1012026B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329230C2 (en) * 1983-08-12 1986-07-24 Fritzmeier AG, Oberentfelden Process for the production of a sailing or surfboard
DE3604211A1 (en) * 1986-02-11 1987-08-13 Repol Polyester Produkte Gmbh DOOR LEAF, TUERFUELLUNG OD.DGL. AND METHOD FOR THE PRODUCTION THEREOF

Also Published As

Publication number Publication date
DE2123975B2 (en) 1975-01-23
IT1012026B (en) 1977-03-10
DE2123975A1 (en) 1972-11-16
FR2137830A2 (en) 1972-12-29
GB1385208A (en) 1975-02-26
JPS5543912B1 (en) 1980-11-08
FR2137830B2 (en) 1978-02-03

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8340 Patent of addition ceased/non-payment of fee of main patent