DE2123975A1 - Heavy-duty foam bodies - Google Patents

Heavy-duty foam bodies

Info

Publication number
DE2123975A1
DE2123975A1 DE19712123975 DE2123975A DE2123975A1 DE 2123975 A1 DE2123975 A1 DE 2123975A1 DE 19712123975 DE19712123975 DE 19712123975 DE 2123975 A DE2123975 A DE 2123975A DE 2123975 A1 DE2123975 A1 DE 2123975A1
Authority
DE
Germany
Prior art keywords
reinforcement
gel coat
edge zone
layers
outer skin
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
DE19712123975
Other languages
German (de)
Other versions
DE2123975C3 (en
DE2123975B2 (en
Inventor
Peter Dipl.-Ing. 5210 Troisdorf; Drouven Gustav Dr. 5060 Bensberg; Leyer Helmut 5670 Opladen; Müller Johann 5000 Köln-Flittard Hoppe
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 AT417572A priority patent/AT312944B/en
Priority to FR7217039A priority patent/FR2137830B2/fr
Priority to GB2230072A priority patent/GB1385208A/en
Priority to JP4653672A priority patent/JPS5543912B1/ja
Priority to IT24268/72A priority patent/IT1012026B/en
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

FARBENFABRIKEN BAYER AGFARBENFABRIKEN BAYER AG LEVERKU SEN.-BayerwerkLEVERKU SEN.-Bayerwerk ZentralbereichCentral area Patente, Marken und LizenzenPatents, trademarks and licenses

Mr/KKMr / KK

1* Ma/ I97f1 * Ma / I97f

Hochbeänspruchbare Schaumstoffkörper (Zusatz zu Patentanmeldung P 17 04 642.3)Heavy-duty foam bodies (addendum to patent application P 17 04 642.3)

Die vorliegende Erfindung bezieht sich auf einen hochbeanspruchbaren Schäumstoffkörper, insbesondere aus Polyurethan, mit einer Außenhaut, auf deren Innenseite eine eingeschäumte Randzonenverstärkungseinlage angeordnet ist, die aus mindestens einer Armierungsmatte oder einem Armierungsgewebe und einem oder mehreren Fasergebilden besteht, wobei diese verschiedenartigen Lagen mittels der Fasern des Fasergebildes fest miteinander verbunden sind.The present invention relates to a heavy duty Foam bodies, in particular made of polyurethane, with an outer skin, on the inside of which a foamed-in edge zone reinforcement insert is arranged, which consists of at least a reinforcement mat or a reinforcement fabric and one or more fiber structures, these of various types Layers are firmly connected to one another by means of the fibers of the fiber structure.

Die Außenhaut, die aus einem Gel-coat bestehen kann oder aus einer andersartigen Deckschicht mit einem Gel-coat-Aufstrich auf der Innenseite, hat mit der Randzonenverstärkungseinlage eine im wesentlichen nur flächige Verbindung über die Armierungsmatte oder das Armierungsgewebe, die mit einer Seite in die Gel-coat-Schicht eingebettet sind. Eine weitere Verbindung zwischen Gel-coat-Schicht und Schaumstoffkern besteht über diejenigen Fasern, die durch die Armierungsmatte oder das Armierungsgewebe hindurchragen und dementsprechend in der Gel-coat-Schicht mitverankert sind.The outer skin, which can consist of a gel coat or from a different type of top layer with a gel coat on the inside, with the edge zone reinforcement insert an essentially only two-dimensional connection via the reinforcement mat or the reinforcement fabric, one side of which is embedded in the gel coat layer. Another connection between the gel coat layer and the foam core consists of those fibers that pass through the reinforcement mat or the reinforcement fabric protrude and are accordingly anchored in the gel coat layer.

Es wurde gefunden, daß die Kraftübertragung zwischen Außenhaut und Schaumstoffkern über die Randzonenverstärkungsein-It was found that the power transmission between the outer skin and the foam core via the edge zone reinforcement

Le A 13 654 - 1 - Le A 13 654 - 1 -

209847/0996209847/0996

lage noch wesentlich besser zugunsten höherer Festigkeiten gestaltet werden kann, wenn erfindungsgemäß die Außenhaut wenigstens · innenseitig aus einem Gel-coat (auf Basis Polyurethan, Polyesterharz-, Epoxyharz oder dergl.) besteht, in das wenigstens die Armierungsmatte oder das Armierungsgewebe völlig eingebettet ist. Durch diese tiefe Verankerung der Randzonenverstärkungseinlage in der Außenhaut wird erreicht, daß die Außenhaut selbst größere Spannungen aufnehmen kann und zum anderen auch eine bessere Kraftübertragung zum Kern hin erfolgt.position can be designed even better in favor of higher strengths if the outer skin according to the invention at least on the inside of a gel coat (based on polyurethane, Polyester resin, epoxy resin or the like.) In which at least the reinforcement mat or the reinforcement fabric is completely embedded. This deep anchoring of the edge zone reinforcement insert in the outer skin ensures that that the outer skin itself can absorb greater stresses and, on the other hand, better power transmission takes place towards the core.

Gemäß einer Weiterbildung des erfindungsgemäßen Schaumstoffkörpers sind bei 2+n-»-lagigen Randzonenverstärkungseinlagen mehrere Lagen iri das Gel-coat eingebettet. D.h., daß also nicht nur Armierungsmarten, die beispielsweise aus Geweben, Metallskeletten usw. bestehen, sondern 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 GfK-Schicht optimiert ist.According to a further development of the foam body according to the invention are for 2 + n - »- layered edge zone reinforcement inserts several layers embedded in the gel coat. This means that not only reinforcement types, for example, made from fabrics, Metal skeletons etc. exist, but also reinforcement structures (e.g. fiber fleece) fully penetrated by the gel coat are. This also eliminates any risk of delamination the mats or fabric is completely switched off, and the inherent stiffness of the GRP layer produced is optimized is.

Es versteht sich, daß der vom Gel-coat durchdrungene Anteil des Randzonenverstarkungssystems 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 portion of the edge zone reinforcement system penetrated by the gel coat over the entire extent seen can be different and according to the pre-calculated loads for the different locations of the body.

Vorzugsweise ist die zum Inneren des Körpers weisende Lage in Richtung ihrer Dicke wenigstens teilweise in das Gel-coat eingebettet. Dies bringt den Vorteil, daß diese Lage sowohl vom Gel-coat als auch von Schaum teilweise durchdrungen ist.The layer facing the interior of the body is preferably at least partially in the gel coat in the direction of its thickness embedded. This has the advantage that this layer is partially penetrated by both the gel coat and the foam.

Im übrigen sei bezüglich der Wahl von Armierungsmatten und Fasergebilden auf die Ausführungen in der Haupt-Patentanmeldung hingewiesen.For the rest, with regard to the choice of reinforcement mats and fiber structures, refer to the statements in the main patent application pointed out.

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209847/0996209847/0996

In einer Zeichnung ist der erfindungsgemäße Schaumstoffkörper im Schnitt in mehreren Ausführungsbeispielen dargestellt und zwar zeigen:The foam body according to the invention is shown in a drawing shown in section in several exemplary embodiments, namely show:

Figur 1 einen Schaumstoffkörper mit einer vierlagigen Randzonenverstärkungseinlage, Figure 1 shows a foam body with a four-layer edge zone reinforcement insert,

Figur 2 einen Schaumstoffkörper mit einer achtlagigen Randzonenverstärkungseinlage
undFIG. 2 shows a foam body with an eight-layer edge zone reinforcement insert
and

Figur 3 einen Schaumstoffkörper mit einer vierlagigen Randzonenverstärkungseinlage, bei der die innerste Lage einseitig mit der Gel-coat-Schicht verbunden ist.FIG. 3 shows 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 Figur 1 besteht die Außenhaut 1' aus einer Metallfolie 81 und einer Gel-coat-Schicht 9f. Eine Randzonenverstärkungseinlage 2' ist aus zwei Armierungsmatten 3' und zwei Fasergebilden (Vliese) 5! aufgebaut. Durch Vernadelung sind eine Anzahl Fasern 4' der Fasergebilde 5' durch die Armierungsmatten 31 hindurchgezogen, so daß die Randzonenverstärkungseinlage 2· eine Einheit bildet. Die der Außenhaut 8* am nächsten gelegene Armierungsmatte 3* ist völlig in die Gelcoat-Schicht 9' eingebettet. Die übrigen Lagen sind von dem Schäumstoffkern 61 durchdrungen.In FIG. 1, the outer skin 1 ′ consists of a metal foil 8 1 and a gel coat layer 9 f . An edge zone reinforcement insert 2 'consists of two reinforcement mats 3' and two fiber structures (fleeces) 5 ! built up. A number of fibers 4 'of the fiber structures 5' are drawn through the reinforcement mats 3 1 by needling, so that the edge zone reinforcement insert 2 forms a unit. The reinforcement mat 3 * closest to the outer skin 8 * is completely embedded in the gelcoat layer 9 '. The other layers are penetrated by the foam core 6 1.

In Figur 2 besteht die Außenhaut 1" nur aus einer Gel-coat-Schicht 9". Sie ist entsprechend stärker gestaltet als im Ausführungsbeispiel gemäß Figur 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 sind vom Hartschaumstoffkern 6" durchschäumt.In FIG. 2, the outer skin 1 ″ consists only of a gel coat layer 9 ". It is designed to be correspondingly stronger than in the exemplary embodiment according to FIG. 1. There are four layers of it the edge zone reinforcement insert 2 "penetrated, namely two reinforcement mats 3" and two fiber structures 5 ". Also here the layers are connected to one unit by needling with fibers 4 ″. Four further layers of the edge zone reinforcement insert are foamed through by the hard foam core 6 ".

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209847/0996209847/0996

In Figur 3 sind drei Lagen der Randzonenverstärkungseinlage 3'" in die Gel-coat-Sicht 9"', die die Außenhaut 1»· darstellt, eingebettet, und die innerste Fasergebildelage 5"' ist einseitig in der Gel-coat-Schicht fixiert, während ihr üriger Teil durchschäumt ist.In Figure 3, three layers of the edge zone reinforcement insert 3 '"in the gel coat view 9"', which represents the outer skin 1 »·, embedded, and the innermost fiber structure layer 5 "'is fixed on one side in the gel coat layer, while you üriger part is foamed through.

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209847/0996209847/0996

Claims (3)

Patentansprüche;Claims; ί 1)VHochbeanspruchbarer Schaumstoffkörper, insbesondere aus ^■—^ Polyurethan, mit einer Außenhaut, auf deren. Innenseite eine durchschäumte Randzonenverstärkungseinlage angeordnet ist, die aus mindestens einer Armierungsmatte und einem Fasergebilde besteht, wobei diese Lagen über Fasern des Fasergebildes fest miteinander verbunden sind, nach Patentanmeldung P 17 04 642.3, dadurch gekennzeichnet, daß die Außenhaut (11, 1", 11") wenigstens innenseitig aus einem Gel-coat (91, 9", 9in) (z.B. Epoxyharz, Polyesterharz oder Polyurethan) bestehti, in das wenigstens die Armierungsmatte (31, 3", 3IM ) völlig eingebettet ist.ί 1) VHigh-strength foam body, in particular made of ^ ■ - ^ polyurethane, with an outer skin on which. Inside a foamed-through edge zone reinforcement insert is arranged, which consists of at least one reinforcement mat and a fiber structure, these layers are firmly connected to one another via fibers of the fiber structure, according to patent application P 17 04 642.3, characterized in that the outer skin (1 1 , 1 ", 1 1 ") consists at least on the inside of a gel coat (9 1 , 9", 9 in ) (eg epoxy resin, polyester resin or polyurethane), in which at least the reinforcement mat (3 1 , 3 ", 3 IM ) is completely embedded. 2) Schaumstoffkörper nach Anspruch 1, dadurch gekennzeichnet, daß bei Randzonenverstärkungseinlagen (2") mit mindestens drei Lagen wenigstens zwei Lagen in das Gel-coat (9") eingebettet sind.2) foam body according to claim 1, characterized in that that in the case of edge zone reinforcement inserts (2 ") with at least three layers, at least two layers are embedded in the gel coat (9") are. 3) Schaumstoffkörper nach Anspruch 2, dadurch gekennzeichnet, daß die zum Inneren des Körpers weisende Lage (5IM ) auf das Gel-coat (9IM) aufgelegt ist.3) Foam body according to claim 2, characterized in that the layer facing the interior of the body (5 IM ) is placed on the gel coat (9 IM ). Le A 13 654 - 5 - Le A 13 654 - 5 - 209847/1996209847/1996 LeerseiteBlank page
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
FR7217039A FR2137830B2 (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
JP4653672A JPS5543912B1 (en) 1971-05-14 1972-05-12
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
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 true DE2123975A1 (en) 1972-11-16
DE2123975B2 DE2123975B2 (en) 1975-01-23
DE2123975C3 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329230A1 (en) * 1983-08-12 1985-02-28 Fritzmeier Ag METHOD FOR THE PRODUCTION OF SAILS OR WAVE RIDING BOARDS AND SAILING OR WAVE RIDING BOARD

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3604211A1 (en) * 1986-02-11 1987-08-13 Repol Polyester Produkte Gmbh DOOR LEAF, TUERFUELLUNG OD.DGL. AND METHOD FOR THE PRODUCTION THEREOF

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329230A1 (en) * 1983-08-12 1985-02-28 Fritzmeier Ag METHOD FOR THE PRODUCTION OF SAILS OR WAVE RIDING BOARDS AND SAILING OR WAVE RIDING BOARD

Also Published As

Publication number Publication date
GB1385208A (en) 1975-02-26
FR2137830B2 (en) 1978-02-03
FR2137830A2 (en) 1972-12-29
JPS5543912B1 (en) 1980-11-08
DE2123975C3 (en) 1975-09-25
IT1012026B (en) 1977-03-10
DE2123975B2 (en) 1975-01-23

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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