DE853067C - Synthetic resin moldings with glass fiber insert - Google Patents

Synthetic resin moldings with glass fiber insert

Info

Publication number
DE853067C
DE853067C DEG1609D DEG0001609D DE853067C DE 853067 C DE853067 C DE 853067C DE G1609 D DEG1609 D DE G1609D DE G0001609 D DEG0001609 D DE G0001609D DE 853067 C DE853067 C DE 853067C
Authority
DE
Germany
Prior art keywords
synthetic resin
glass fibers
resin moldings
glass
glass fiber
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
DEG1609D
Other languages
German (de)
Inventor
Wilhelm Dipl-Ing Dr-Ing Esser
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.)
OSCAR GOSSLER GLASGESPINSTFABR
Original Assignee
OSCAR GOSSLER GLASGESPINSTFABR
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 OSCAR GOSSLER GLASGESPINSTFABR filed Critical OSCAR GOSSLER GLASGESPINSTFABR
Priority to DEG1609D priority Critical patent/DE853067C/en
Application granted granted Critical
Publication of DE853067C publication Critical patent/DE853067C/en
Expired 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
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • 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
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Man hat Kunstharzpreßmassen bereits mit Faserstoffen, wie Glaswolle, Schlackenwolle usw., versetzt. Auch ist vorgeschlagen, Glasfasern, die eine Stärke unter 0,02 mm besitzen und die verdrillt sind, in Kunstharzpreßkörper einzubetten. Es wurde nun gefunden, daß eine solche Verdrillung von Glasfasern praktisch nicht möglich ist. Einmal ist die Sprödigkeit der Glasfasern zu groß, so daß eine nennenswerte Torsionskraft nicht aufgewendet werden kann, vor allem aber treffen die Voraussetzungen nicht zu, die bei jenem Vorschlag eine Rolle spielen, daß die Glasfasern wegen ihrer Glätte in der Kunstharzpreßmasse nicht gehalten würden und daher eine Verdrillung nötig sei. Synthetic resin molding compounds have already been made with fibrous materials such as glass wool, Slag wool, etc., offset. It is also suggested to use fiberglass, which is a strength below 0.02 mm and which are twisted to be embedded in synthetic resin molded bodies. It has now been found that such a twisting of glass fibers is practically impossible is possible. On the one hand, the brittleness of the glass fibers is too great, so that a significant Torsional force cannot be applied, but above all meet the requirements not to, which play a role in that proposal, that the glass fibers because of them Smoothness in the synthetic resin molding compound would not be maintained and therefore a twist is necessary.

Es wurde gefunden, daß man Kunstharzformlinge mit Glasfasereinlage zweckmäßig herstellen kann, indem in warmformbare oder härtbare Kunstharzmasse unter Zugspannung stehende Glasfasern, Faserbündel oder Faserschichten so eingebettet werden, daß die Glasfasern nach dem Erstarren des Kunstharzformlings unter Zugspannung bleiben. Die Glasfasern können der Kunstharzmasse auch während des Streckspinn- oder Streckspritzverfahrens unter Zugspannung in den erhärtenden Formling eingebettet werden. Nach einer besonderenAusführungsform der Erfindung ist die Oberfläche der Glasfasern auf mechanischem oder chemischem Wege aufgerauht. It has been found that synthetic resin moldings with a glass fiber insert can be used Can expediently produce by taking in thermoformable or curable synthetic resin compound Tension-standing glass fibers, fiber bundles or fiber layers embedded in this way that the glass fibers are under tensile stress after the synthetic resin molding has solidified stay. The glass fibers can also be added to the synthetic resin compound during the draw spinning or stretch injection molding process embedded in the hardening molding under tensile stress will. According to a particular embodiment of the invention, the surface is the Glass fibers roughened mechanically or chemically.

In der Zeichnung sind zwei Ausführungsformen der Erfindung beispielsweise veranschaulicht. In the drawing, two embodiments of the invention are for example illustrated.

Fig. I zeigt im senkrechten Schnitt schematisch die Einbettung einer Glasfaser in thermoplastische Kunstharzpreßmasse in einer Form; in Fig. 2 ist eine Strangpreßeinrichtung unter Strekkung des erhaltenen Stranges im Schnitt veranschaulicht. Fig. I shows schematically in vertical section the embedding of a Glass fiber in thermoplastic resin molding compound in a mold; in Fig. 2 is a Extruder illustrated with stretching of the strand obtained in section.

Wie aus Fig. I hervorgeht, kann in eine teilbare Form I, 2 in üblicher Weise die Preßmasse 3 eingebracht werden. Zwischen den beiden Formhälften I und 2 wird eine Glasfaser 4 ausgestreckt, beispielsweise unter einer Zugspanung von 5 kg/mm2, darauf die Form mit Kunstharzpreßmasse gefüllt und nun der Stempel 5 in üblicher Weise eingepreßt. As can be seen from Fig. I, in a divisible form I, 2 in the usual Way, the molding compound 3 are introduced. Between the two mold halves I and 2, a glass fiber 4 is stretched out, for example under a tensile stress of 5 kg / mm2, then filled the mold with synthetic resin molding compound and now the punch 5 in pressed in the usual way.

Nach dem Verfestigen enthält-derKunstharzformling 3 die Glasfasern 4 unter Zugspannung. After solidification, the synthetic resin molding 3 contains the glass fibers 4 under tension.

Wie aus Fig. 2 zu ersehen ist, kann die Einbettung der Glasfasern unter Zugspannung auch nach dem Strangpreß- oder dem Spritzverfahren erfolgen. Die heizbare Strangpresse 14 mit der Förderschnecke 6 besitzt einen Fülltrichter 7, in die die Kunstharzmasse im Gemisch mit Glasfasern eingefüllt wird. As can be seen from Fig. 2, the embedding of the glass fibers be carried out under tensile stress also after the extrusion or the injection molding process. the heatable extruder 14 with the screw conveyor 6 has a hopper 7, in which the synthetic resin compound is filled in a mixture with glass fibers.

Die Kunstharzmasse wird durch Homogenisierplatten 8 in den eigentlichen Spritzraum g gebracht und tritt aus der Spritzdüse 10 in Form eines Schlauches, Bandes oder profilierten Stranges ii aus, der durch Streckwalzen 12 gestreckt und schließlich auf einer Trommel I3 aufgewickelt wird.The synthetic resin mass is through homogenizing plates 8 in the actual Brought spray chamber g and emerges from the spray nozzle 10 in the form of a hose, Ribbon or profiled strand ii from which is stretched by stretching rollers 12 and is finally wound on a drum I3.

Während des Streckens ordnen sich die Glasfasern in Richtung der Längsachse des Stranges und werden gleichzeitig, während die Spritzmasse noch formbar ist, unter Zugspannung gesetzt, so daß der erhaltene Strang Glasfasern aufweist, die unter Zugspannung stehen. An Stelle kurzer stapelfaserartiger Glasfasern können auch lange Glasfasern bzw. auch Glasfaserbündel in axialer Richtung unter Vorspannung mit der Kunstharzmasse gespritzt werden. Das ist beispielsweise möglich, wenn die Förderschnecke hohl ausgebildet wird und dadurch die Glasfasern mittig unter Vorspannung in die Kunstharzmasse eingeführt werden.During stretching, the glass fibers arrange themselves in the direction of the longitudinal axis of the strand and at the same time, while the injection molding compound is still malleable, placed under tension so that the strand obtained has glass fibers which are under tension. Instead of short staple fiber-like glass fibers also long glass fibers or glass fiber bundles in the axial direction under pretension be injected with the synthetic resin compound. This is possible, for example, if the The screw conveyor is designed to be hollow and thereby the glass fibers are pretensioned in the middle are introduced into the synthetic resin compound.

Nach der vorliegenden Erfindung wird eine ähnliche technische Wirkung erreicht wie bei dem bekannten Spannbeton, bei dem Stahldrähte unter Zugspannung in die Betonmasse eingebettet werden, so daß sie nach dem Erhärten unter Zugspannung stehen und dem Betonformling eine erhöhte mechanische Festigkeit verleihen. According to the present invention, a similar technical effect is obtained achieved as with the known prestressed concrete, in which steel wires are under tension are embedded in the concrete mass, so that they are under tensile stress after hardening stand and give the concrete molding increased mechanical strength.

Unter Glasfasern im Sinne der vorliegenden Erfindung werden alle Fasern aus in der Wärme plastischen Mineralmassen, wie Glasfasern, Glaswolle, Glaswatte, Schlackenwolle, Mineralwolle usw., verstanden. Die Stärke der Glasfasern entspricht zweckmäßig der der sogenannten Textilglasfasern. For the purposes of the present invention, glass fibers include all Fibers made from mineral masses that are plastic when exposed to heat, such as glass fibers, glass wool, glass wadding, Slag wool, mineral wool, etc., understood. The strength of the glass fibers corresponds appropriately that of the so-called textile glass fibers.

Sie liegt vorzugsweise unter 0,03 mm.It is preferably less than 0.03 mm.

An Stelle einzelner Fasern können auch Faserbündel nach der vorliegenden Erfindung eingebettet werden oder Faserschichten, bei denen die Glasfasern parallel in einer oder mehreren Ebenen übereinanderliegen. Instead of individual fibers, fiber bundles according to the present invention can also be used Invention are embedded or fiber layers in which the glass fibers are parallel lie on top of one another in one or more levels.

Es hat sich als vorteilhaft erwiesen, die Oberfläche der Glasfasern durch chemische Behandlung, beispielsweise durch Atzen mit Flußsäure oder durch mechanische Behandlung, beispielsweise durch Verändern des Querschnitts mittels Ultraschallwellen od. dgl., aufzurauhen, um eine noch bessere Haftfähigkeit zu erzielen. It has been found to be beneficial to the surface of the glass fibers by chemical treatment, for example by etching with hydrofluoric acid or by mechanical treatment, for example by changing the cross section by means of Ultrasonic waves or the like. To roughen up in order to achieve even better adhesion.

Claims (3)

PATENTANsPRÜcHE: I. Kunstharzformlinge mit Glasfasereinlage, dadurch gekennzeichnet, daß in warmformbare oder härtbare Kunstharzmassen unter Zugspannung stehende Glasfasern, Faserbündel oder Faserschichten so eingebettet werden, daß die Glasfasern nach dem Erstarren des Kunstharzformlings unter Zugspannung bleiben. PATENT CLAIMS: I. Synthetic resin moldings with glass fiber insert, thereby characterized in that in thermoformable or curable synthetic resin compositions under tensile stress standing glass fibers, fiber bundles or fiber layers are embedded in such a way that the glass fibers remain under tension after the synthetic resin molding has solidified. 2. Kunstharzformlinge nach Anspruch I, dadurch gekennzeichnet, daß die Glasfasern der Kunstharzmasse während des Streckspinn- oder Streckspritzverfahrens unter Zugspannung in den erhärtenden Strang eingebettet werden. 2. synthetic resin moldings according to claim I, characterized in that the glass fibers of the synthetic resin compound during the stretch spinning or stretch injection molding process embedded in the hardening strand under tensile stress. 3. Kunstharzformlinge nach Anspruch I und 2, dadurch gekennzeichnet, daß die Oberfläche der Glasfasern auf mechanischem oder chemischem Wege aufgerauht ist. 3. synthetic resin moldings according to claim I and 2, characterized in that that the surface of the glass fibers roughened mechanically or chemically is.
DEG1609D 1944-03-23 1944-03-23 Synthetic resin moldings with glass fiber insert Expired DE853067C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG1609D DE853067C (en) 1944-03-23 1944-03-23 Synthetic resin moldings with glass fiber insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG1609D DE853067C (en) 1944-03-23 1944-03-23 Synthetic resin moldings with glass fiber insert

Publications (1)

Publication Number Publication Date
DE853067C true DE853067C (en) 1952-10-20

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1017862B (en) * 1955-08-12 1957-10-17 Basf Ag Device and machine parts made of polyamides that are exposed to sliding bearings and sliding friction
DE1018614B (en) * 1954-04-24 1957-10-31 G H Sachsenroeder Fa Pressed body made of hydrate cellulose foils connected by a binder
DE1175425B (en) * 1952-04-18 1964-08-06 Dr Adolf Becker Process for manufacturing drive belts
DE1231968B (en) * 1959-03-04 1967-01-05 Sulzer Ag Polytetrafluoroethylene sliding body interspersed with grainy glass
DE1236168B (en) * 1960-06-10 1967-03-09 Inst Leichtbau Und Oekonomisch Forming tool for non-cutting forming
DE2143398A1 (en) * 1970-12-01 1972-06-22 Textron Inc Plastic bearings and process for their manufacture

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1175425B (en) * 1952-04-18 1964-08-06 Dr Adolf Becker Process for manufacturing drive belts
DE1018614B (en) * 1954-04-24 1957-10-31 G H Sachsenroeder Fa Pressed body made of hydrate cellulose foils connected by a binder
DE1017862B (en) * 1955-08-12 1957-10-17 Basf Ag Device and machine parts made of polyamides that are exposed to sliding bearings and sliding friction
DE1231968B (en) * 1959-03-04 1967-01-05 Sulzer Ag Polytetrafluoroethylene sliding body interspersed with grainy glass
DE1236168B (en) * 1960-06-10 1967-03-09 Inst Leichtbau Und Oekonomisch Forming tool for non-cutting forming
DE2143398A1 (en) * 1970-12-01 1972-06-22 Textron Inc Plastic bearings and process for their manufacture

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