DE3822933A1 - Process for reinforcing plastic foam - Google Patents

Process for reinforcing plastic foam

Info

Publication number
DE3822933A1
DE3822933A1 DE3822933A DE3822933A DE3822933A1 DE 3822933 A1 DE3822933 A1 DE 3822933A1 DE 3822933 A DE3822933 A DE 3822933A DE 3822933 A DE3822933 A DE 3822933A DE 3822933 A1 DE3822933 A1 DE 3822933A1
Authority
DE
Germany
Prior art keywords
plastic foam
reinforcement
foam
recesses
plaster
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.)
Withdrawn
Application number
DE3822933A
Other languages
German (de)
Inventor
Des Erfinders Auf Nennung Verzicht
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.)
GEFINEX JAKON GmbH
Original Assignee
GEFINEX JAKON 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
Application filed by GEFINEX JAKON GmbH filed Critical GEFINEX JAKON GmbH
Priority to DE3822933A priority Critical patent/DE3822933A1/en
Priority to DE19883831323 priority patent/DE3831323A1/en
Priority to DE19893900854 priority patent/DE3900854C2/en
Publication of DE3822933A1 publication Critical patent/DE3822933A1/en
Withdrawn legal-status Critical Current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
    • B29C70/82Forcing wires, nets or the like partially or completely into the surface of an article, e.g. by cutting and pressing
    • 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
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/36Feeding the material to be shaped
    • B29C44/46Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • 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
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/56After-treatment of articles, e.g. for altering the shape
    • 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
    • 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
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)

Abstract

According to the invention, plastic foam, in particular polystyrene foam or polyurethane foam in sheet form, is reinforced with woven fabrics, fibres or the like by either the reinforcement being rolled in the warm state into the plastic foam or else by there first of all being shaped into the surface of the plastic foam recesses which subsequently receive the reinforcement and, after receiving the reinforcement, are closed again.

Description

Die Erfindung betrifft ein Verfahren zur Armierung von Kunststoff­ schaum, insbesondere Polystyrol- oder Polyurethan-Schaumplatten mit Geweben und/oder Fasern oder dergleichen.The invention relates to a method for reinforcing plastic foam, especially polystyrene or polyurethane foam sheets Fabrics and / or fibers or the like.

Kunststoffschaum hat nach seiner Herstellung nur eine äußerst ge­ ringe Biegefestigkeit. Das führt dazu, daß z. B. Platten aus Kunst­ stoffschaum sehr leicht brechen. Um dem zu begegnen, ist es bekannt, Schaum einseitig mit einem Putz zu versehen. Bei dem Putz handelt es sich um einen mineralischen Putz. Der Putz besitzt nach dem bekann­ ten Vorschlag eine Gewebeeinlage. Das erfüllt zwar den Zweck einer Armierung, hat aber verschiedene Nachteile. Zu den Nachteilen aber gehört u. a. das Transportgewicht und Transportvolumen des Putzes. Erfahrungsgemäß ist es unwirtschaftlich, Massengüter wie Putzmörtel über längere Entfernungen zu transportieren, wenn der Putz auch örtlich verfügbar ist. Ein anderer Nachteil ist die an sich geringe Haftung des Putzes an der Oberfläche des Kunststoffschaumes. Es bedarf erst einer umfangreichen Oberflächenbehandlung, bevor der Putz an dem Kunststoffschaum haftet.Plastic foam has only one extremely ge after its production rings bending strength. The result is that z. B. Art plates break fabric foam very easily. To counter this, it is known To provide plaster on one side of foam. The plaster is mineral plaster. The plaster has after the known suggestion a fabric insert. That fulfills the purpose of one Reinforcement, but has several disadvantages. But to the disadvantages heard u. a. the transport weight and transport volume of the plaster. Experience has shown that it is uneconomical to use bulk goods such as plastering mortar to be transported over longer distances, if the plaster too is available locally. Another disadvantage is that it is small in itself Adhesion of the plaster to the surface of the plastic foam. It requires extensive surface treatment before the Plaster adheres to the plastic foam.

Der Erfindung liegt daher die Aufgabe zugrunde, die Armierung von Kunststoffschaum zu vereinfachen und wirtschaftlich günstiger zu gestalten. Dies wird nach der Erfindung dadurch erreicht, daß die als Armierung dienenden Gewebe und/oder Fasern oder dergleichen heiß in den Schaum eingedrückt werden oder in vorgeformte Ausnehmungen des Kunststoffschaumes gelegt werden, die anschließend über der Armierung geschlossen werden.The invention is therefore based on the task of reinforcing Simplify plastic foam and economically cheaper too shape. This is achieved according to the invention in that the serving as reinforcement fabric and / or fibers or the like hot be pressed into the foam or into preformed recesses of the plastic foam, which are then placed over the Reinforcement can be closed.

Vorzugsweise wird die Armierung in erwärmter Form in den Kunststoff eingewalzt. Das geschieht dann z. B. in der Form, daß zusammen mit dem extrudierten Kunststoffschaum das zur Armierung vorgesehene Gewebe oder dergleichen mit in den Spalt zwischen den den extrudier­ ten Kunststoffschaum aufnehmenden Kalanderwalzen aufgegeben wird. The reinforcement is preferably heated in the plastic rolled in. This then happens e.g. B. in the form that together with the extruded plastic foam is intended for reinforcement Tissue or the like with in the gap between the extruders calender rollers that absorb plastic foam.  

Die Armierung bzw. das Gewebe durchläuft vorher eine Vorwärmstation, in der es auf die gewünschte Oberflächentemperatur gebracht wird, die erforderlich ist, um die Armierung unter Aufschmelzung der Ober­ fläche des Kunststoffschaumes in diesen einzudrücken. Besonderes geeignet sind Glasfaserarmierungen. Die Glasfaserarmierungen lassen sich problemlos auf die gewünschte Temperatur bringen.The reinforcement or the fabric first passes through a preheating station, in which it is brought to the desired surface temperature, which is required to melt the reinforcement while melting the upper Push the surface of the plastic foam into it. Special Glass fiber reinforcements are suitable. Leave the glass fiber reinforcements bring yourself to the desired temperature without any problems.

In der anderen Alternative sind den den extrudierten Kunststoff­ schaum aufnehmenden Kalanderwalzen entweder Profilwalzen nachgeord­ net oder sind die Kalanderwalzen zugleich als Profilwalzen ausgebil­ det, so daß von den profilierten nachgeordneten Walzen, die dazu erwärmt werden oder von den gleichermaßen vorbereiteten Kalanderwal­ zen eine Profilierung in die Oberfläche des extrudierten Kunststoff­ schaumes gedrückt wird, die eine Abbildung der Armierung z. B. des Gewebes beinhaltet. Infolge dessen kann die Armierung anschließend in die Oberfläche des Kunststoffschaumes eingelegt werden. Vorzugs­ weise werden die Ausnehmungen dann wieder verschlossen. Das kann z. B. mit weiteren Profilwalzen erfolgen, die Kunststoffschaum im Bereich der Ausnehmungen plastifizieren und zusammendrücken.The other alternative is extruded plastic Foam-absorbing calender rolls either downstream of profile rolls net or the calender rolls are also designed as profile rolls det, so that of the profiled subordinate rollers that do so be warmed or by the equally prepared calender whale zen a profile in the surface of the extruded plastic Foam is pressed, which is an illustration of the reinforcement z. B. of Tissue. As a result, the reinforcement can subsequently be inserted into the surface of the plastic foam. Preferential the recesses are then closed again. That can e.g. B. with other profile rollers, the plastic foam in Plasticize and compress the area of the recesses.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung darge­ stellt.In the drawing, an embodiment of the invention is Darge poses.

Mit 1 ist der Kopf eines Extruders 2 bezeichnet. Der Extruder 2 produziert Polystyrol-Schaum 3 in Form einer Endlosplatte. Der Polystyrol-Schaum 3 wird dabei zwischen Kalanderwalzen 4 und 5 auf­ genommen. Die Kalanderwalzen 4 und 5 sind in einem Gerüst 6 angeord­ net. Neben den Kalanderwalzen 4 und 5 ist im Gerüst 6 auch eine Rolle 7 für Armierungsmaterial drehbeweglich gelagert. Das mit 8 bezeichnete Armierungsmaterial besteht aus einem gitterförmigen Glasfasergewebe. Nach Abziehen von der Rolle 7 durchläuft das Glas­ fasergewebe 8 eine Heizstation 9. Es handelt sich bei der Heiz­ station um elektrisch betriebene Heizstrahler. With 1 the head of an extruder 2 is designated. The extruder 2 produces polystyrene foam 3 in the form of an endless plate. The polystyrene foam 3 is taken between calender rolls 4 and 5 . The calender rolls 4 and 5 are net in a stand 6 angeord. In addition to the calender rolls 4 and 5 , a roll 7 for reinforcing material is also rotatably mounted in the stand 6 . The reinforcement material designated 8 consists of a latticed glass fiber fabric. After removal from the roll 7 , the glass fiber fabric 8 passes through a heating station 9 . The heating station is an electrically operated radiant heater.

Nach Verlassen der Heizstation 9 wird die gitterförmige Armierung 8 von der Kalanderwalze 5 dem extrudierten Kunststoffschaum 3 in den Spalt zwischen beiden Kalanderwalzen 4 und 5 gezogen. Dabei drückt sich das warme Armierungsmaterial in den Kunststoffschaum ein. Der Kunststoffschaum umschließt danach das Armierungsmaterial fest.After leaving the heating station 9 , the lattice-shaped reinforcement 8 is drawn from the calender roll 5 and the extruded plastic foam 3 into the gap between the two calender rolls 4 and 5 . The warm reinforcement material is pressed into the plastic foam. The plastic foam then encloses the reinforcement material.

In der Zeichnung ist lediglich eine einseitige Armierung des Kunst­ stoffschaumes 3 gezeigt. Wahlweise erfolgt eine beidseitige Armie­ rung. Dazu ist dann auch unterhalb des Kopfes 1 eine Vorratsrolle 7 und eine Heizstation für weiteres Armierungsmaterial angeordnet.In the drawing, only one-sided reinforcement of the plastic foam 3 is shown. A double-sided reinforcement is optionally available. For this purpose, a supply roll 7 and a heating station for further reinforcement material are then also arranged below the head 1 .

Claims (4)

1. Verfahren zur Armierung von Kunststoffschaum, insbesondere Poly­ styrol- oder Polyurethan-Schaumplatten mit Geweben und/oder Fasern oder dergleichen, dadurch gekennzeichnet, daß die Armie­ rung warm in den Schaum eingedrückt wird oder in vorgeformte Ausnehmungen des Kunststoffschaumes gelegt wird, die anschließend über der Armierung geschlossen werden.1. A method for reinforcing plastic foam, in particular poly styrene or polyurethane foam sheets with fabrics and / or fibers or the like, characterized in that the armature tion is pressed warm into the foam or is placed in preformed recesses in the plastic foam, which are then over the reinforcement are closed. 2. Verfahren nach Anspruch 1, gekennzeichnet durch die Verwendung von erwärmten Glasfasern als Armierung und Einwalzen der Armie­ rung.2. The method according to claim 1, characterized by the use of warmed glass fibers as reinforcement and rolling in the armie tion. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Aus­ nehmungen in den Kunststoffschaum eingewalzt werden und nach Einlegen der Armierung durch Walzen wieder verschlossen werden.3. The method according to claim 1, characterized in that the off recesses are rolled into the plastic foam and after Insert the reinforcement to be closed again by rolling. 4. Verfahren nach einem oder mehreren der Ansprüche 1 bis 3, gekenn­ zeichnet durch die Verwendung von gitterförmigen Armierungen (8).4. The method according to one or more of claims 1 to 3, characterized by the use of grid-shaped reinforcements ( 8 ).
DE3822933A 1988-07-07 1988-07-07 Process for reinforcing plastic foam Withdrawn DE3822933A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE3822933A DE3822933A1 (en) 1988-07-07 1988-07-07 Process for reinforcing plastic foam
DE19883831323 DE3831323A1 (en) 1988-07-07 1988-09-15 Process for reinforcing polystyrene foam
DE19893900854 DE3900854C2 (en) 1988-07-07 1989-01-13 Process for reinforcing plastic foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3822933A DE3822933A1 (en) 1988-07-07 1988-07-07 Process for reinforcing plastic foam

Publications (1)

Publication Number Publication Date
DE3822933A1 true DE3822933A1 (en) 1990-01-11

Family

ID=6358109

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3822933A Withdrawn DE3822933A1 (en) 1988-07-07 1988-07-07 Process for reinforcing plastic foam

Country Status (1)

Country Link
DE (1) DE3822933A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900854A1 (en) * 1988-07-07 1990-07-19 Gefinex Gmbh Process for reinforcing plastics foam
US5318649A (en) * 1989-12-20 1994-06-07 Sumitomo Chemical Company, Limited Laminates and process for producing the same
WO2010139077A1 (en) * 2009-06-04 2010-12-09 Quadrant Plastic Composites Ag Method for producing a composite material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185567B (en) * 1953-12-09 1956-05-11 Hutter & Schrantz Ag Siebwaren Process for the production of bodies reinforced with fabric coverings or the like
US3791912A (en) * 1970-07-22 1974-02-12 Francois Allard Construction member
DE1704677B2 (en) * 1967-04-26 1977-03-31 Alber geb. Bärwald, Melita, 7760 Radolfzell METHOD FOR PRODUCING COMPOSITE MATERIALS
DE2621777A1 (en) * 1976-05-15 1977-11-24 Berstorff Gmbh Masch Hermann Continuous mfr. of foamed polystyrene laminate webs - by heating coating to above softening temp. of foam core and applying whilst electrically perforating it

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185567B (en) * 1953-12-09 1956-05-11 Hutter & Schrantz Ag Siebwaren Process for the production of bodies reinforced with fabric coverings or the like
DE1704677B2 (en) * 1967-04-26 1977-03-31 Alber geb. Bärwald, Melita, 7760 Radolfzell METHOD FOR PRODUCING COMPOSITE MATERIALS
US3791912A (en) * 1970-07-22 1974-02-12 Francois Allard Construction member
DE2621777A1 (en) * 1976-05-15 1977-11-24 Berstorff Gmbh Masch Hermann Continuous mfr. of foamed polystyrene laminate webs - by heating coating to above softening temp. of foam core and applying whilst electrically perforating it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 58-14 726 A in: Patents Abstracts of Japan, Sect. M, Vol. 7, 1983, No. 89, M-207 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900854A1 (en) * 1988-07-07 1990-07-19 Gefinex Gmbh Process for reinforcing plastics foam
US5318649A (en) * 1989-12-20 1994-06-07 Sumitomo Chemical Company, Limited Laminates and process for producing the same
WO2010139077A1 (en) * 2009-06-04 2010-12-09 Quadrant Plastic Composites Ag Method for producing a composite material

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