DE1230550B - Process for the production of one-piece objects, components or molded bodies with a preformed lightweight core in a multi-part mold surrounded by a glass fiber reinforced cast resin jacket - Google Patents

Process for the production of one-piece objects, components or molded bodies with a preformed lightweight core in a multi-part mold surrounded by a glass fiber reinforced cast resin jacket

Info

Publication number
DE1230550B
DE1230550B DED33042A DED0033042A DE1230550B DE 1230550 B DE1230550 B DE 1230550B DE D33042 A DED33042 A DE D33042A DE D0033042 A DED0033042 A DE D0033042A DE 1230550 B DE1230550 B DE 1230550B
Authority
DE
Germany
Prior art keywords
glass fiber
fiber reinforced
components
cast resin
production
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.)
Pending
Application number
DED33042A
Other languages
German (de)
Inventor
Dipl-Ing Hermann Mylius
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.)
DUROPLAST
SCHAUMVERBUNDBAU GmbH
Original Assignee
DUROPLAST
SCHAUMVERBUNDBAU GmbH
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 NL263229D priority Critical patent/NL263229A/xx
Application filed by DUROPLAST, SCHAUMVERBUNDBAU GmbH filed Critical DUROPLAST
Priority to DED33042A priority patent/DE1230550B/en
Priority to AT272061A priority patent/AT249352B/en
Priority to DK141261A priority patent/DK103639C/en
Priority to CH395961A priority patent/CH426240A/en
Priority to FR857808A priority patent/FR1289694A/en
Priority to GB1244461A priority patent/GB920042A/en
Publication of DE1230550B publication Critical patent/DE1230550B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • B29C70/865Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/42Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/48Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10Building 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
    • E04C2/20Building 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
    • E04C2/205Building 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. CL:Int. CL:

B29dB29d

Deutsche KL: ' 39 a3 - 27700German KL: '39 a3 - 27700

Nummer: .1230550Number: .1230550

Aktenzeichen: . D 33042 X/39 a3
Anmeldetag: 6. April 1960
Auslegetag: · 15. Dezember 1966
File number: . D 33042 X / 39 a3
Filing date: April 6, 1960
Opening day: December 15, 1966

Die Erfindung betrifft ein Verfahren zur Herstellung von einstückigen Gegenständen, Bauteilen oder Formkörpern mit von einem glasfaserverstärkten Gießhärzmantel umgebenen vorgeformten Leicht-■kern, in einer mehrteiligen Form.The invention relates to a method of manufacture of one-piece objects, components or moldings with a glass fiber reinforced Preformed lightweight core surrounded by casting resin, in a multi-part form.

Einstückige Gegenstände, Bauteile oder Formkörper mit von einem glasfaserverstärkten Gießharzmantel umgebenen vorgeformten Leichtkern in einer mehrteiligen Form herzustellen, ist an sich bekannt. ;-.-Hierzu ist zur Herstellung von einstückigen, in sich geschlossenen Rahmen, insbesondere Fenster- oder Türrahmen mit einem glasfaserverstärkten Gießharzmantel und einer Schaumkunststoffeinlage in einer aus einem Ober- und einem Unterteil bestehenden ·. Form bereits vorgeschlagen worden, eine dem Innenraum der Form und der erforderlichen Gießharzmantelstärke entsprechend vorgeformte Schaumkunststoffeinlage mit einer Glasfaserschicht so zu umhüllen, daß diese die Schaumkunststoffeinlage nach ihrem Einsatz in die Form im Abstand der gewünschten Gießharzmantelstärke von den Innenwänden der Formteile hält, worauf in die Form Gießharz eingebracht wird, das die den Raum zwischen der Forminnenwand und der Schaumkunststoffeinlage ausfüllende Glasfaserschicht durchtränkt und anschließend ausgehärtet wird.It is known per se to produce one-piece objects, components or molded bodies with a preformed lightweight core surrounded by a glass fiber-reinforced cast resin jacket in a multi-part form. ; -.- For this purpose, one-piece, self-contained frames, in particular window or door frames with a glass fiber-reinforced cast resin jacket and a foam plastic insert in an upper and a lower part, are required. Form has already been proposed to enclose a foam plastic insert preformed according to the interior of the mold and the required cast resin jacket thickness with a glass fiber layer so that it holds the foam plastic insert after its use in the mold at a distance of the desired cast resin jacket thickness from the inner walls of the molded parts, whereupon in the mold Casting resin is introduced, which soaks the glass fiber layer filling the space between the inner wall of the mold and the foam plastic insert and is then cured.

Demgegenüber besteht die Erfindung darin, daß der vorgeformte Leichtkern mehrteilig ist und dessen einzelne, in bekannter· Weise mit einer Glasfaser- . schicht versehenen Kernteile mit Abstand zueinander in den Innenraum der Form eingelegt und die hierdurch gebildeten Zwischenräume zwischen einander benachbarten Kernteilen mit einem Glasfasererzeugnis ausgefüllt werden, worauf in bekannter Weise nach dem Schließen der Form das Gießharz in diese eingebracht und ausgehärtet wird.In contrast, the invention consists in that the preformed lightweight core is in several parts and its individual, in a known · way with a fiber optic. layered core parts with spacing from one another inserted into the interior of the mold and the spaces thus formed between each other adjacent core parts are filled with a glass fiber product, whereupon in a known manner after the mold is closed, the casting resin is introduced into it and cured.

Die Maßnahmen gemäß der Erfindung erlauben es, einstückige glasfaserverstärkte Kunststoffgegenstände herzustellen, mit im voraus genau bestimmbaren Festigkeitseigenschaften, z. B. Fertigbauteile für die verschiedensten Verwendungsgebiete, auch komplizierterer Formgebung. Dieses können z.B. Fenster- und Türrahmen, Bauteile für Fertighäuser, Hohne für Eisenbahnschranken, Lichtmasten, Bauteile für elektrische Anlagen, bei denen der hohe Isolierwert des Bauteiles von besonderem Vorteil ist, Schwimmbojen für die Schiffahrt sein.The measures according to the invention allow one-piece glass fiber reinforced plastic objects produce, with in advance precisely determinable strength properties, z. B. prefabricated parts for the most diverse areas of application, including more complex shapes. This can e.g. Window and door frames, components for prefabricated houses, hats for railroad barriers, light masts, components for electrical systems in which the high insulation value of the component is of particular advantage, Be floating buoys for shipping.

Die Ausführung der Innenstege, Innenverrippungen oder Schotten, die Festigkeit des herzustellenden Gegenstandes steigernden Stützeinbauten, wird erfindungsgemäß dadurch erzielt, daß zwei oder eine Mehrzahl vorgeformter und mit einer Glasfaserschicht Verfahren zur Herstellung von einstückigen
Gegenständen, Bauteilen oder Formkörpern mit von einem glasfaserverstärkten Gießharzmantel
umgebenen vorgeformten Leichtkern in einer
mehrteiligen Form .
The execution of the inner webs, inner ribs or bulkheads, the strength of the object to be manufactured supporting fixtures, is achieved according to the invention in that two or a plurality of preformed and with a glass fiber layer method for the production of one-piece
Objects, components or moldings with a glass fiber reinforced cast resin jacket
surrounded preformed lightweight core in one
multi-part shape.

Anmelder:Applicant:

DuroplastjSchaumverbundbäuG. m. b. H.,Duroplast foam composite building. m. b. H.,

Nürnberg,. Prinzregentenufer 13Nuremberg,. Prinzregentenufer 13

Als Erfindet benannt: .... .. :"·;.-...-.-Named as inventor: .... ..: "·;.-...-.-

Dipl.-Ing. Hermann Mylius, NürnbergDipl.-Ing. Hermann Mylius, Nuremberg

versehenen Teilkemen mit Abstand zueinander in die Form eingelegt werden. Der Abstand zwischen zwei benachbarten Teilkemen wird, hierbei entsprechend der Stärke gewählt, die dem in dem Bauteil anzuordnenden Stützeinbau gegeben werden soll. Dieser durch den Abstand entstehende Zwischenraum wird mit einem Glasfasererzeugnis ausgefüllt. Nach dem anschließend erfolgenden Schließen der Form wird das Gießharz in bekannter Weise in die Form eingeführt, z. B. unter Druck eingepreßt. Hierbei werden alle Glasfaserschichten zwischen .der Forminnenwand und der Oberfläche der Teilkerne sowie die Glasfasereinlagen zwischen den Teilkemen von dem Gießharz durchtränkt.. Durch das Aushärten des Gießharzes entstehen dann nicht nur der glasfaserverstärkte Gießharzmantel, sondern gleichfalls die der Festigkeitserhöhung dienenden glasfaserverstärkten Stützeinbauten des Bauteiles.provided partial cores are inserted into the mold at a distance from one another. The distance between two adjacent part cores is selected here according to the thickness that is to be arranged in the component Support installation should be given. This gap created by the distance becomes filled in with a fiberglass product. After this after the mold is closed, the casting resin is introduced into the mold in a known manner, z. B. pressed in under pressure. Here, all glass fiber layers are between .the inner wall of the mold and the surface of the part cores and the glass fiber inlays between the part cores of the casting resin soaked .. The hardening of the cast resin not only creates the glass fiber reinforced one Cast resin jacket, but also the glass fiber reinforced ones that serve to increase strength Supporting fixtures of the component.

Durch entsprechendes Variieren der Menge des Glasfaseranteiles in den Zwischenräumen zwischen den Teilkemen ist es ohne weiteres möglich, auch unter Beibehaltung des jeweils vorgesehenen Abstandes zwischen den Teilkemen, die Festigkeitseigenschaften des herzustellenden Bauteiles den Belastungen, denen dieser ausgesetzt werden soll, anzupassen, und zwar sowohl einheitlich über die gesamte Ausdehnung des Bauteiles hinweg, als auch erforderlichenfalls abschnittsweise verschieden.By varying the amount of fiberglass in the spaces between the dividing cores, it is easily possible, even while maintaining the respective intended distance between the partial cores, the strength properties of the component to be manufactured and the loads, to which this is to be exposed to adapt, both uniformly over the entire extent of the component and, if necessary, different in sections.

Eine weitere vorteilhafte Ausbildung der Erfindung besteht darin, daß die Kemteile mit diese durchdringenden Aussparungen, auch verschiedenster Formgebung, versehen sind, die mit dem Glasfasererzeugnis ausgefüllt werden. Hierdurch ist es in einfacher Weise möglich, bei beispielsweise langgestreckten Bauteilen diese mit quer oder winklig zu seinerA further advantageous embodiment of the invention consists in that the core parts penetrate with them Recesses, also of various shapes, are provided with the glass fiber product fill out. This makes it possible in a simple manner, for example in the case of elongated ones Assemble these at right angles or at an angle to his

509 747/311509 747/311

Längsachse verlaufenden Streben oder Verstärkungen und Abstützungen zu versehen.To provide longitudinal struts or reinforcements and supports.

Um den Gießharzmantel des Bauteiles in gewissen Bereichen zu verstärken und dadurch die allgemeine Festigkeit des Bauteiles-noch beträchtlich zu erhöhen, wird als weitere vorteilhafte Ausbildung des Verfahrens gemäß'der Erfindung vorgeschlagen, in die Oberfläche der Kernteile in bekannter Weise Nuten oder Ausnehmungen einzuarbeiten, die mit einem Glasfasererzeugnis ausgefüllt werden. Diese Maßnähme ermöglicht z. B. die Anordnung von den glasfaserverstärkten Mantel stützenden Verstärkungsrippen, die sich von einem Querschott zum nächstfolgenden erstrecken. Auch können die Verstärkungsrippen so angeordnet werden, daß diese ein Gitter- werk bilden. Hierdurch wird es gegebenenfalls ermöglicht, die Gießharzmantelstärke erheblich zu verringern, ohne hierdurch das Festigkeitsverhalten des Gießharzmantels zu schwächen.To reinforce the cast resin jacket of the component in certain areas and thereby the general Another advantageous embodiment of the method is to increase the strength of the component still considerably proposed according to the invention, grooves in the surface of the core parts in a known manner or to incorporate recesses that are filled with a fiberglass product. These measures enables z. B. the arrangement of the glass fiber reinforced jacket supporting reinforcing ribs, which extend from one transverse bulkhead to the next extend. The reinforcement ribs can also be arranged in such a way that they form a lattice form work. This makes it possible, if necessary, to reduce the thickness of the cast resin jacket considerably, without weakening the strength behavior of the cast resin jacket.

In der Zeichnung sind Ausführungsbeispiele von gemäß der Erfindung hergestellten Bauteilen dargestellt. Es zeigtIn the drawing are exemplary embodiments of Components manufactured according to the invention shown. It shows

Fig. 1 einen Bauteil in perspektivischer Ansicht mit einer ausgebrochenen Ecke,1 shows a component in a perspective view with a broken corner,

Fig. 2 eine Draufsicht auf den Bauteil nachFig. 1 ohne ausgebrochene Ecke,Fig. 2 is a plan view of the component according toFig. 1 without broken corner,

Fig.3 einen Schnitt in der LinieC-D nach Fig. 2,3 shows a section on the line C-D according to FIG. 2,

F i g. 4 einen Schnitt in der Linie A-B nach F i g. 2 undF i g. 4 shows a section in line AB according to FIG. 2 and

Fig. 5 einen Kernteil in schaubildlicher Darstellung. 5 shows a core part in a perspective representation.

Das nach der Erfindung hergestellte Erzeugnis besteht gemäß dem Ausführungsbeispiel einerseits aus Wänden, Rippen oder Stegen 1 bis 4 aus einem glasfaserverstärkten Gießharz und zum anderen aus Leichtkernen 5, 6, die bevorzugt aus einem Kunstlarzhartschaum hergestellt sind.According to the exemplary embodiment, the product produced according to the invention consists on the one hand Walls, ribs or webs 1 to 4 made of a glass fiber reinforced cast resin and on the other Light cores 5, 6, which are preferably made from a synthetic resin hard foam.

Gemäß der Erfindung kann man den Teilen 1 bis 4 eine beliebige Gestalt, Form, Dicke und Festigkeit geben. So ist hier die Außenwandung 1 vorgesehen, innerhalb welcher sich die durchgehende Innenwandung 2 in Art eines Schottes befindet. Außerdem sind eine ringsum verlaufende Innenverrippung 3 und entsprechende Querstege 4 vorhanden.According to the invention, the parts 1 to 4 can have any shape, shape, thickness and strength give. So here the outer wall 1 is provided, within which the continuous inner wall 2 is located in the manner of a bulkhead. In addition, there is an all-round internal ribbing 3 and corresponding Cross webs 4 available.

Zwecks Herstellung der durchgehenden Wand 2 sind die beiden Teilkerne 5 und 6 in die Form mit einem der Dicke der Wandung 2 entsprechenden Abstand eingelegt worden, wobei vor Durchführung des Gießprozesses der Hohlraum zwischen den Teilkernen 5 und 6 mit einem Glasfasererzeugnis ausgefüllt wurde. In der gleichen Weise sind die Hohlräume zwischen den Teilkernen und der Forminnenwandung mit einem Glasfasererzeugnis versehen worden. For the purpose of producing the continuous wall 2, the two partial cores 5 and 6 are in the mold with a distance corresponding to the thickness of the wall 2 has been inserted, and before the implementation of the Casting process the cavity between the cores 5 and 6 filled with a glass fiber product became. The cavities between the partial cores and the inner wall of the mold are in the same way has been provided with a fiberglass product.

Zwecks Herstellung der Rippen bzw. Stege 3 bzw. 4 sind in die Teilkerne 5 und 6 entsprechende Nuten oder Aussparungen eingearbeitet, z. B. gefräst, und ebenfalls vor Durchführung des Gießprozesses mit dem Glasfasererzeugnis ausgefüllt worden.For the purpose of producing the ribs or webs 3 and 4, the cores 5 and 6 are correspondingly inserted Grooves or recesses incorporated, e.g. B. milled, and also before performing the casting process has been filled in with the fiberglass product.

Ein solcher vorbereiteter Teilkern ist schaubildlich in F i g. 5 dargestellt.Such a prepared partial core is shown diagrammatically in FIG. 5 shown.

Claims (3)

Patentansprüche:Patent claims: 1. Verfahren zur Herstellung von einstückigen Gegenständen, Bauteilen oder Formkörpern mit von einem glasfaserverstärkten Gießharzmantel umgebenen vorgeformten Leichtkern in einer mehrteiligen Form, dadurch gekennzeichnet, daß mehrere vorgeformte und in bekannter Weise mit einer Glasfaserschicht versehene Kernteile mit Abstand zueinander in den Innenraum der Form eingelegt und die hierdurch gebildeten Zwischenräume zwischen einander benachbarten Kernteilen mit einem Glasfasererzeugnis ausgefüllt werden, worauf in bekannter Weise nach dem Schließen der Form das Gießharz in diese eingebracht und ausgehärtet wird.1. Process for the production of one-piece objects, components or moldings with preformed lightweight core surrounded by a glass fiber reinforced cast resin jacket in one multi-part form, characterized in that several pre-formed and in known Way core parts provided with a glass fiber layer at a distance from one another in the interior inserted into the mold and the spaces thus formed between adjacent one another Core parts are filled with a fiberglass product, after which in a known manner When the mold is closed, the casting resin is introduced into it and cured. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Kernteile mit diese durchdringenden Aussparungen versehen sind, und diese Aussparungen mit Glasfasererzeugnis ausgefüllt werden.2. The method according to claim 1, characterized in that the core parts with these penetrating Recesses are provided, and these recesses are filled with fiberglass will. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß in die Oberfläche der Kernteile in bekannter Weise Nuten oder Ausnehmungen eingearbeitet sind, die mit Glasfasererzeugnis ausgefüllt werden.3. The method according to claims 1 and 2, characterized in that grooves or recesses are incorporated in the surface of the core parts in a known manner, which are filled with glass fiber product. In Betracht gezogene Druckschriften:
Deutsche Patentschriften Nr. 851 851, 922 440,
005;
schweizerische Patentschrift Nr. 336 595.
Considered publications:
German patent specifications No. 851 851, 922 440,
005;
Swiss patent specification No. 336 595.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings 609 747/311 12.66 © Bundesdruckerei Berlin609 747/311 12.66 © Bundesdruckerei Berlin
DED33042A 1960-04-06 1960-04-06 Process for the production of one-piece objects, components or molded bodies with a preformed lightweight core in a multi-part mold surrounded by a glass fiber reinforced cast resin jacket Pending DE1230550B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL263229D NL263229A (en) 1960-04-06
DED33042A DE1230550B (en) 1960-04-06 1960-04-06 Process for the production of one-piece objects, components or molded bodies with a preformed lightweight core in a multi-part mold surrounded by a glass fiber reinforced cast resin jacket
AT272061A AT249352B (en) 1960-04-06 1961-04-04 Process for the production of objects from glass fiber reinforced plastic
DK141261A DK103639C (en) 1960-04-06 1961-04-05 Method for manufacturing articles or structural parts of a glass fiber reinforced plastic and a light core.
CH395961A CH426240A (en) 1960-04-06 1961-04-05 Process for the production of moldings from a glass fiber reinforced plastic and lightweight core for carrying out the process
FR857808A FR1289694A (en) 1960-04-06 1961-04-05 Process and materials for the manufacture of articles, construction elements and the like from synthetic material reinforced with glass fibers
GB1244461A GB920042A (en) 1960-04-06 1961-04-06 Improvements relating to the production of objects or parts from synthetic-resin material reinforced with glass fibre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED33042A DE1230550B (en) 1960-04-06 1960-04-06 Process for the production of one-piece objects, components or molded bodies with a preformed lightweight core in a multi-part mold surrounded by a glass fiber reinforced cast resin jacket

Publications (1)

Publication Number Publication Date
DE1230550B true DE1230550B (en) 1966-12-15

Family

ID=7041566

Family Applications (1)

Application Number Title Priority Date Filing Date
DED33042A Pending DE1230550B (en) 1960-04-06 1960-04-06 Process for the production of one-piece objects, components or molded bodies with a preformed lightweight core in a multi-part mold surrounded by a glass fiber reinforced cast resin jacket

Country Status (6)

Country Link
AT (1) AT249352B (en)
CH (1) CH426240A (en)
DE (1) DE1230550B (en)
DK (1) DK103639C (en)
GB (1) GB920042A (en)
NL (1) NL263229A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201786A1 (en) * 1982-01-21 1983-07-28 Peter St. 8000 München Lutz Process for forming a box section girder from fibre-reinforced synthetic resin around a supporting foam core, suitable inter alia for producing windsurfing boards
DE3537840A1 (en) * 1984-10-26 1986-04-30 Hans Ing.(Grad.) 7321 Aichelberg Germar Process for producing mouldings from plastic and sandwich construction element produced according to this process
DE3511610A1 (en) * 1985-03-29 1986-10-09 Eternit Ag, 1000 Berlin Process for producing a sandwich component
DE4123185A1 (en) * 1990-07-13 1992-01-16 Samsung Heavy Ind SHOVEL ROD FOR EXCAVATOR MADE OF POLYMER COMPOSITE MATERIAL HIGH STRENGTH AND METHOD FOR PRODUCING SUCH A

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992500A (en) * 1996-04-16 1999-11-30 Cmi International, Inc. Method of making a casting having a low density insert

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE851851C (en) * 1948-10-02 1952-10-09 Bayer Ag Process for the production of molded articles
DE922440C (en) * 1952-09-24 1955-01-17 Basf Ag Process for wrapping porous molded articles made of polystyrene
CH336595A (en) * 1955-07-02 1959-02-28 Lonza Ag Process for the production of bent laminate panels and panel produced thereafter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE851851C (en) * 1948-10-02 1952-10-09 Bayer Ag Process for the production of molded articles
DE922440C (en) * 1952-09-24 1955-01-17 Basf Ag Process for wrapping porous molded articles made of polystyrene
CH336595A (en) * 1955-07-02 1959-02-28 Lonza Ag Process for the production of bent laminate panels and panel produced thereafter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201786A1 (en) * 1982-01-21 1983-07-28 Peter St. 8000 München Lutz Process for forming a box section girder from fibre-reinforced synthetic resin around a supporting foam core, suitable inter alia for producing windsurfing boards
DE3537840A1 (en) * 1984-10-26 1986-04-30 Hans Ing.(Grad.) 7321 Aichelberg Germar Process for producing mouldings from plastic and sandwich construction element produced according to this process
DE3511610A1 (en) * 1985-03-29 1986-10-09 Eternit Ag, 1000 Berlin Process for producing a sandwich component
DE4123185A1 (en) * 1990-07-13 1992-01-16 Samsung Heavy Ind SHOVEL ROD FOR EXCAVATOR MADE OF POLYMER COMPOSITE MATERIAL HIGH STRENGTH AND METHOD FOR PRODUCING SUCH A
DE4123185C2 (en) * 1990-07-13 1999-02-11 Samsung Heavy Ind Bucket stick for an excavator and process for its manufacture

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AT249352B (en) 1966-09-26
GB920042A (en) 1963-03-06
CH426240A (en) 1966-12-15
NL263229A (en)
DK103639C (en) 1966-01-31

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