DE1067206B - - Google Patents
Info
- Publication number
- DE1067206B DE1067206B DENDAT1067206D DE1067206DA DE1067206B DE 1067206 B DE1067206 B DE 1067206B DE NDAT1067206 D DENDAT1067206 D DE NDAT1067206D DE 1067206D A DE1067206D A DE 1067206DA DE 1067206 B DE1067206 B DE 1067206B
- Authority
- DE
- Germany
- Prior art keywords
- polyester resin
- pipes
- cores
- core
- manufacture
- 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
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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/82—Cores or mandrels
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
- B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
- B29C33/66—Cellulose; Derivatives thereof
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/76—Cores
-
- 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
- B29K2911/00—Use of natural products or their composites, not provided for in groups B29K2801/00 - B29K2809/00, as mould material
- B29K2911/12—Paper, e.g. cardboard
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
DEUTDEUT
Kühre aus Kunststoff zum Leitungsbau für oberirdische und unterirdische Leitungen und zum Transport von Flüssigkeiten sind seit geraumer Zeit bekannt. In erster Linie waren es hier die thermoplastischen Kunststoffe, die herangezogen wurden. Die Herstellung dieser Rohre gestaltet sich unter Benutzung von Schnecken- oder Strangpressen verhältnismäßig einfach. Als Kunststoffmaterialien werden beispielsweise erwähnt Polyvinylchlorid, Zelluloseacetobutvrat. Polyäthylen. Die Abmessungen der Schnecken- oder Strangpressen bestimmen den Durchmesser der so hergestellter* Rohre, die zur Zeit noch verhältnismäßig klein ist. Rohre mit größerem Durchmesser aus dem thermoplastischen Polyvinylchlorid sind schon bekannt. Jedoch werden diese aus Halbzeug, nämlich Platten, unter Erwärmen zunächst zu Rohrabschnitten vorgeformt. Anschließend wird der Formling zum fertigen Rohr verschweißt. Der Nachteil thermoplastischer Kunststoffe ist ihre geringe Wärmebeständigkeit, und außerdem sind nicht alle Thermoplaste gegenüber korrodierenden Einwirkungen beständig. Plastic tubs for building lines for above-ground and underground lines and for transporting liquids have been known for some time. First and foremost, it was the thermoplastics that were used here. The manufacture of these pipes is relatively simple using screw or extrusion presses. As plastic materials, for example, polyvinyl chloride and cellulose acetate are mentioned. Polyethylene. The dimensions of the screw or extrusion presses determine the diameter of the pipes produced in this way, which is still relatively small at the moment. Pipes with a larger diameter made of the thermoplastic polyvinyl chloride are already known. However, these are first preformed into pipe sections from semi-finished products, namely plates, while being heated. The preform is then welded to form the finished pipe. The disadvantage of thermoplastic polymers is ness their low heat resistant, and also are not all thermoplastics to corrosive effects resistant.
Mit der fortschreitenden Entwicklung der Kunststoffe aus glasfaserverstärkten ungesättigten Polyesterharzen blieb es nicht aus, daß auch diese Kunststoff art zur Herstellung von Rohren herangezogen wurde. Es werden auch nahtlose Rohre dieser Art, die mechanisch und ziemlich warmfest sind, mit größeren Abmessungen hergestellt.With the advancing development of plastics made from glass fiber reinforced unsaturated polyester resins It was inevitable that this type of plastic was also used for the manufacture of pipes became. There are also seamless tubes of this type, which are mechanical and fairly heat-resistant, with larger ones Dimensions made.
Ein Verfahren benutzt zur Armierung Glasseidenstränge, sogenannte Rovings, die mit einer ungesättigten Polyesterharzmischung getränkt und nachfolgend auf einem sich langsam drehenden Metallkern aufgewickelt werden. Die Polyesterharzmischung ist mit peroxydischen_ Katalysatoren und Beschleunigern^ z. B. sehr^genngen^Mengen Kobaltnaphthenat, versetzt, Zur Ausschaltung desdie Ttorüngsff efe'TöTymerisation verhindernden Luftsauerstoffes wird die getränkte Wicklung mit einer Zellulosehydratfolie abgedeckt und zusätzlich durch Umwickeln mit einem Gummituch fest an den Metallkern gedrückt. Anschließend erfolgt in einem Ofen die Aushärtung, nach deren Beendigung der Metallkern entfernt wird.A method uses fiberglass strands, so-called rovings, which are impregnated with an unsaturated polyester resin mixture and then wound onto a slowly rotating metal core for reinforcement. The polyester resin mixture is with peroxidischen_ catalysts and accelerators ^ z. B. very low amounts of cobalt naphthenate, offset, to eliminate the atmospheric oxygen which prevents the Ttorüngsff efe 'TöTymerisationes the soaked winding is covered with a cellulose hydrate film and additionally pressed tightly to the metal core by being wrapped with a rubber blanket. Curing then takes place in an oven, after which the metal core is removed.
Bei einem weiteren Verfahren bedient man sich •eines rotierenden Stahlrohres, in das die zur Reaktion fertigen ungesättigten Polyesterharzmischungen gemeinsam mit der Glasseidenverstärkung eingeführt werden. Das Metallrohr ist beheizt, so daß die Polycsterharzmischungen während oder kürz nach ihrer Formgebung härten. An dem Ende des Stahlrohrs wird das Kunststoffrohr mechanisch herausgezogen.Another method is to use • a rotating steel pipe into which to react finished unsaturated polyester resin mixtures introduced together with the glass fiber reinforcement will. The metal pipe is heated so that the Polycsterharzmischungen during or shortly after their Harden the shaping. The plastic pipe is pulled out mechanically at the end of the steel pipe.
Ein drittes Verfahren arbeitet ähnlich wie eine Strangpresse, indem Glasfaserstränge erst mit Polyesterharzmischung getränkt, dann durch einen profilgebenden Düsenkopf gedrückt und schließlich in einerA third process works similarly to an extrusion press, in which glass fiber strands are first mixed with a polyester resin soaked, then pressed through a profiling nozzle head and finally in a
Herstellung von Rohren aus mit Polyesterharz getränkten GlasfasernManufacture of pipes made of impregnated with polyester resin Fiberglass
Anmelder: Reichhold Chemie A. G., Hamburg-Wandsbek, Iversstr. 57Applicant: Reichhold Chemie A. G., Hamburg-Wandsbek, Iversstr. 57
Dipl.-Chem. Hans Weisbart, Wertheim/M„
und Bruno Skomrock, Hamburg,
sind als Erfinder genannt wordenDipl.-Chem. Hans Weisbart, Wertheim / M "
and Bruno Skomrock, Hamburg,
have been named as inventors
nachgeschalteten beheizten Apparatur auspolymerisiert werden. Diese Rohre haben den Vorteil, daß sie endlos hergestellt werden können. Die Eigentümlichkeit des Herstellungsverfahrens bedingt jedoch ebenfalls nur relativ kleine Querschnitte.downstream heated apparatus are polymerized. These tubes have the advantage that they are endless can be produced. However, the peculiarity of the manufacturing process is also only conditional relatively small cross-sections.
Es ist auch bekannt, beim Herstellen von Gegenständen aus thermoplastischen Stoffen in Formen Trennfolien aus organischer Substanz, wie Zellulose und deren Derivate, zu verwenden. Ferner ist bekannt, bei der Herstellung von Wickelkörpern aus harzgetränkten Papier- oder Gewebebahnen über einen Kern gewickelte Folien aus Kunststoff (Triacetat, Polyvinychlorid) als Trennfolien zu benutzen.It is also known in the manufacture of articles from thermoplastics in molds To use separating films made of organic matter, such as cellulose and its derivatives. It is also known in the production of wound bodies from resin-impregnated paper or fabric webs over a Use core wrapped plastic films (triacetate, polyvinyl chloride) as separating films.
Die Erfindung setzt sich zum Ziel, Rohre auch großer Abmessungen aus mit Polyesterharz getränkten Glasfasern herzustellen, ohne daß dabei teure Formkerne aus Metall bzw. Strangpressen benötigt werden.The aim of the invention is to produce pipes of large dimensions from impregnated with polyester resin Manufacture glass fibers without the need for expensive metal or extrusion cores.
Gemäß der Erfindung wird dies dadurch erreicht, daß beim Herstellen solcher Rohre die Formkerne mit Zellulosehydratfolien umwickelte Papprohre verwendet werden.According to the invention, this is achieved in that the mold cores with the manufacture of such tubes Cellulose hydrate film wrapped cardboard tubes can be used.
Die Papprohrkerne lassen sich mit beliebigem Durchmesser bei geringsten Kosten herstellen; sie können auch wiederholt benutzt werden. Dadurch wird überhaupt erst eine wirtschaftliche Fertigung von Polyesterrohren bei normalen Temperaturen möglich, die gegenüber der Wärmehärtung längere Härtungsdauern erfordert. Die für die Anfertigung großer Stückzahlen notwendige große Anzahl von Formkernen kann ohne großen Aufwand beschafft werden Die Verwendung einer entsprechenden Zahl vor Metallkernen wäre unrationell; darüber hinaus erschwert auch daß größere Gewicht dieser Formkern« die Handhabung bei der Fertigung. Dazu kommt noch daß durch die Anwendung der Trennfolien im Rahmei der Erfindung das Abziehen der ausgehärteten RohrThe cardboard tube cores can be produced with any diameter at the lowest possible cost; she can also be used repeatedly. This is what makes economical production possible in the first place of polyester pipes at normal temperatures, the curing times are longer than with heat curing requires. The large number of mold cores necessary for the production of large quantities can be obtained without much effort using an appropriate number above Metal cores would be inefficient; in addition, it also makes it more difficult that the larger weight of this mold core " handling during production. In addition, through the use of the separating films in the frame of the invention pulling off the cured pipe
909 638/3!909 638/3!
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE789119X | 1955-07-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1067206B true DE1067206B (en) | 1959-10-15 |
Family
ID=6699603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT1067206D Pending DE1067206B (en) | 1955-07-30 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1067206B (en) |
GB (1) | GB789119A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015225659A1 (en) * | 2015-12-17 | 2017-06-22 | Bayerische Motorenwerke Aktiengesellschaft | Method for producing a fiber-reinforced hollow profile component |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE601856A (en) * | 1960-04-28 |
-
0
- DE DENDAT1067206D patent/DE1067206B/de active Pending
-
1956
- 1956-07-30 GB GB23479/56A patent/GB789119A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015225659A1 (en) * | 2015-12-17 | 2017-06-22 | Bayerische Motorenwerke Aktiengesellschaft | Method for producing a fiber-reinforced hollow profile component |
Also Published As
Publication number | Publication date |
---|---|
GB789119A (en) | 1958-01-15 |
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