DE2122581A1 - High duty plastic foam - moulded onto reinforced boundary layer previously moulded under vacuum - Google Patents

High duty plastic foam - moulded onto reinforced boundary layer previously moulded under vacuum

Info

Publication number
DE2122581A1
DE2122581A1 DE19712122581 DE2122581A DE2122581A1 DE 2122581 A1 DE2122581 A1 DE 2122581A1 DE 19712122581 DE19712122581 DE 19712122581 DE 2122581 A DE2122581 A DE 2122581A DE 2122581 A1 DE2122581 A1 DE 2122581A1
Authority
DE
Germany
Prior art keywords
mold
suction
film
area
reinforcement insert
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
DE19712122581
Other languages
German (de)
Inventor
Peter Dipl.-Ing. 5210 Troisdorf; Müller Johann 5670 Opladen; Leyer Helmut 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
Application filed by Bayer AG filed Critical Bayer AG
Priority to DE19712122581 priority Critical patent/DE2122581A1/en
Priority to JP47010265A priority patent/JPS518990B1/ja
Priority to IT19994/72A priority patent/IT947133B/en
Priority to FR7203366A priority patent/FR2124363B1/fr
Priority to GB466072A priority patent/GB1378592A/en
Publication of DE2122581A1 publication Critical patent/DE2122581A1/en
Priority to US05/532,132 priority patent/US4099280A/en
Pending 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
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
    • B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
    • B29C37/0032—In-mould coating, e.g. by introducing the coating material into the mould after forming the article the coating being applied upon the mould surface before introducing the moulding compound, e.g. applying a gelcoat
    • 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
    • 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
    • B29C44/1228—Joining preformed parts by the expanding 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
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/145—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining the lining being a laminate
    • 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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/30—Expanding the moulding material between endless belts or rollers
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/44—Component parts, details or accessories; Auxiliary operations for applying pressure through the walls of an inflated bag
    • 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
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • 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
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
    • B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/006—Degassing moulding material or draining off gas during moulding
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • 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
    • B29K2105/128—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 in the form of a mat
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • 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
    • B29L2009/00—Layered products
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3067—Ships
    • B29L2031/307—Hulls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The parent patent describes a method of making plastic foam objects with reinforced boundary zones comprising these stages: (a) the mould inner surface is coated with adhesive or gel coat; (b) while still viscous, the reinforcing mat is laid on; (c) over this an easily shaped airtight sheet is laid and sealed to the mould or coating outside the perimeter of the reinforcing mat; (d) the space between the sheet and mould is evacuated, pressing the reinforcing mat into the coating; (e) the sheet is removed; (f) the mould is closed; (g) a foaming reaction mixt. is introduced; (h) the finished moulding is removed. In the addition, the edge seal of stage (c) is formed by applying vacuum around the perimeter of the sheet, pref. before vacuum is applied to the main part of the moulding. More rapid edge sealing is achieved.

Description

Verfahren und Vorrichtung zum Herstellen von randzonenverstärkten Schaumstoffkörpern in Füllbauweise Zusatz zu Patent . ... .. (Anmeldung P 21 04 585.2) Gemäß dem Verfahren der Hauptanmeldung werden randzonenverstärkte Schaumstoffkörper in Füllbauweise nach folgenden Schritten hergestellt: a) die Innenfläche einer Form wird mit einem Kleber oder Gel-coat beschichtet; b) auf die Gel-coat- bzw, Kleber-Schicht wird während ihres noch viskosen Zustandes eine Randzonenarmierungseinlage gelegt; c) über die Randzonenarmierungseinlage wird eine luftdichte, anschmiegsame Folie gelegt und außerhalb des Bereiches der Armierungseinlage an der Form bzw, Außenhaut abgedichtet; d) die zwischen der Form bzw. Außenhaut und der Folie vorhandene Luft wird abgesaugt, unter damit verbundenem Einpressen der Armierungseinlage in die Gel-coat- bzw, Kleberschicht; e) die Folie wird entfernt; f) die Form wird verschlossen; g) in den Forinenhohlraum wird ein flüssiges, treibfähiges Reaktionsgemisch eingetragen; h) nach dem Ausschäumen des treibfähigen Gemisches wird der fertige Schaumstoffkörper aus der Form entnommen. Method and device for producing edge zone reinforced Foam bodies in fill construction, addendum to patent. ... .. (registration P 21 04 585.2) According to the process of the main application, foam bodies are reinforced with edge zones manufactured in the filling construction method according to the following steps: a) the inner surface of a mold is coated with an adhesive or gel coat; b) on the gel coat or adhesive layer an edge zone reinforcement insert is placed while it is still viscous; c) An airtight, flexible film is placed over the edge zone reinforcement insert and outside the area of the reinforcement insert on the form or outer skin sealed; d) the air present between the mold or outer skin and the film is sucked off, with the associated pressing of the reinforcement insert into the Gel coat or adhesive layer; e) the film is removed; f) the Form is closed; g) in the cavity of the forine becomes a liquid, propellant Entered reaction mixture; h) after the foaming mixture has been foamed the finished foam body is removed from the mold.

Das erfindungagemåße Verfahren gemäß der Hauptpatentanmeldung hat sich inzwischen als sehr vorteilhaft erwiesen. Ein Nachteil ist lediglich darin aufgetreten, daß der Dichtungsbereich zwischen der Folie und der Form bzw. Außenhaut nicht schnell genug abdichtete, um-ein Evakuieren der Armierungseinlage in äußerst kurzer Zeit zu erreichen.The inventive method according to the main patent application has have now proven to be very beneficial. One disadvantage is merely in it occurred that the sealing area between the film and the mold or outer skin not sealed fast enough to evacuate the reinforcement insert in extremely in a short time.

Die Aufgabe der vorliegenden Erfindung ist deshalb darin zu sehen, diese Evakuierungszeit für die Armierungseinlage herabzusetzen, um damit den gesamten Vorgang zu beschleunigen.The object of the present invention is therefore to be seen in reduce this evacuation time for the reinforcement insert in order to ensure the entire To speed up the process.

Dies wird erfindungsgemäß dadurch erreicht, daß das Abdichten gemäß Verfahrensschritt c) durch Absaugen der Luft im Abdichtbereich zwischen Folie und Form bzw. Außenhaut erfolgt.This is achieved according to the invention in that the sealing according to Process step c) by sucking off the air in the sealing area between the film and Form or outer skin takes place.

Durch dieses Absaugen im Abdichtbereich erfolgt ein viel schnelleres und sichereres Abdichten, so daß keine Falschluft beim Evakuieren der Luft aus dem Bereich der Armierungseinlagenachgesaugt werden kann.This suction in the sealing area is much faster and more secure sealing, so that no air leakage when evacuating the air from the The area of the reinforcement inserts can be sucked up.

Vorzugsweise erfolgt das Absaugen der Luft aus dem Abdichtbereich vor dem Absaugen der Luft aus dem Bereich der Armierungseinlage. Durch diese Maßnahme wird erreicht, daß die Abdichtung bereits stattgefunden hat, wenn der Evakuiervorgang der Armierungseinlage beginnt.The air is preferably sucked out of the sealing area before the air is sucked out of the area of the reinforcement insert. By this measure it is achieved that the seal has already taken place when the evacuation process the reinforcement inlay begins.

Die erfindungsgemäße Vorrichtung zur Durchfuhrung des Verfahrers besteht aus einer Form und einer auf die Forminnenseite auflegbare, luftdichte, anschmiegbare und mit mindestens einem, an eine Absaugpumpe anschließbaren Absauganschluß versehen Folie, wobei mindestens ein Abdichtelement am Rand der Form nach Art einer umlaufenden Nut angeordnet ist.The device according to the invention for carrying out the movement exists from one mold and one that can be placed on the inside of the mold, airtight, conformable and provided with at least one suction connection that can be connected to a suction pump Foil, with at least one sealing element at the edge of the mold in the manner of a circumferential Groove is arranged.

Das Neue ist darin zu sehen, daß der Hohlraum der Nut über eine Absaugleitung an eine Saugpumpe anschließbar ist.The novelty can be seen in the fact that the cavity of the groove has a suction line can be connected to a suction pump.

Beim Absaugen der Luft aus der Nut wird die Folie in die Nut hineingesaugt und legt sich an deren Wandung abdichtend an.When the air is sucked out of the groove, the film is sucked into the groove and is applied to the wall in a sealing manner.

Vorzugsweise weist die Nut Keilform auf, in die bei aufgelegter Folie eine keilförmige Wulst eingreift. Durch die Verwendung von Keilformen für Nut und Wulst ergibt sich eine bessere Abdichtung, da die Wulst sich in der Nut festsaugt.The groove preferably has a wedge shape, in which when the film is in place a wedge-shaped bead engages. By using wedge shapes for groove and Bead results in a better seal because the bead is sucked into the groove.

Gemäß der Hauptpatentanmeldung kann die Wulst auf einem auflegbaren Abdichtprofil angeordnet sein. Alternativ hierzu weist die Folie selbst eine . Wulst auf. Dies hat den Vorteil, daß mit weniger Einzelteilen zu manipulieren ist, wobei die Folie jedoch eine gewisse Steifigkeit aufweisen muß.According to the main patent application, the bead can be placed on a Be arranged sealing profile. Alternatively, the film itself has a. bead on. This has the advantage that fewer individual parts can be manipulated, with however, the film must have a certain rigidity.

Bei der Verwendung von dünnen hochelastischen Gummitüchern als Folie läßt sich eine solche Randwulst nur relativ schwer herstellen und bedienen.When using thin, highly elastic rubber blankets as a film such an edge bead can only be produced and operated with relative difficulty.

Es hat sich gemäß einer weiteren Ausführungsform der vorliegenden Erfindung als vorteilhaft erwiesen, daß zur Erzielung einer gewissen Steifigkeit mindestens im Bereich der Abdichtung die Folie eine Verstärkung durch eine Stretchgewebeeinlage aufweist.It has according to a further embodiment of the present Invention proved to be advantageous that to achieve a certain rigidity At least in the area of the seal, the film is reinforced by a stretch fabric insert having.

Eine solche Einlage besteht beispielsweise aus einer zweischienigen Kettstuhlware aus nach dem Falschdrahtverfahren texturierten 44 dtex starken Polyamidfäden. Die Einlage wiegt ohne Beschichtung etwa 80 g/qm und ist nach allen Richtungen elastisch.Such an insert consists, for example, of a double-rail Warp loom made from false-twist textured 44 dtex polyamide threads. The insert weighs around 80 g / m² without a coating and is elastic in all directions.

Die Absaugleitung zum Entlüften des Abdichtbereiches kann sowohl durch die Form vom Boden der Nut zu einer Absaugpumpe führen als auch durch die Wulst der Folie. Vorzugsweise sind die zum Bereich der Armierungseinlage und die vom Abdichtbereich wegführenden Absaugleitungen an eine gemeinsame Absaugpumpe angeschlossen. Dies hat den Vorteil eInes geringeren maschinellen Aufwandes.The suction line for venting the sealing area can both through lead the shape from the bottom of the groove to a suction pump as well as through the bead the slide. Preferably those to the area of the reinforcement insert and those from the sealing area The suction lines leading away are connected to a common suction pump. this has the advantage of less machine effort.

Um das Absaugen aus dem Abdichtbereich zeitlich gegenüber demjenigen aus dem Bereich der Armierungseinlage steuern zu können, sieht die Erfindung gemäß einer besonders vorteilhaften Ausführungsform vor#, daß in den Absaugleitungen Absperrelemente angeordnet sind. Diese erlauben dem Personal beispielsweise durch Öffnen des Absperrelementes in der Absaugleitung für den Abdichtbereich zunächst diesen zu evakuieren und unter Unterdruck zu halten, indem weiter abgesaugt wird oder auch das Absperrelement wieder verschlossen wird und um sodann das Absperrelement, das in der zum Bereich der Armierungseinlage führenden Absaugleitung angeordnet ist, zu öffnen und diesen Bereich zu evakuieren.To the suction from the sealing area chronologically opposite that To be able to control from the area of the reinforcement insert, the invention provides a particularly advantageous embodiment before # that shut-off elements in the suction lines are arranged. These allow the staff, for example, by opening the shut-off element in the suction line for the sealing area first to evacuate this and below Maintain negative pressure by continuing to suction or the shut-off element again is closed and then the shut-off element, which is in the area of the reinforcement insert leading suction line is arranged to open and evacuate this area.

Ein drittes, an einem Abzweigstutzen im gemeinsamen Teil der Absaugleitung in vorteilhafter Weise angeordnetes Absperrelement dient schließlich der Belüftung beider Bereiche nach erfolgtem Einpreßvorgang der Armierungseinlage.A third, at a branch connection in the common part of the suction line Finally, the shut-off element arranged in an advantageous manner is used for ventilation both areas after the reinforcement insert has been pressed in.

Gemäß einer besonders vorteilhaften Weiterbildung der Erfindung sind die Absperrelemente über ein Steuergerät betätigbar. Dieses Steuergerät spricht beispielsweise auf Unterdruckmesser an, die auf einem bestimmten erreichten Unterdruck einen Stellmotor über einen Impulsgeber betätigen um das jeweilige angesprochene Ventil zu verstellen.According to a particularly advantageous development of the invention are the shut-off elements can be actuated via a control device. This control unit speaks for example, on vacuum gauges that have reached a certain vacuum operate a servomotor via a pulse generator to activate the respective Adjust valve.

In einer Zeichnung ist die erfindungsgemäße Vorrichtung dargestellt und in Verbindung mit dem erfindungsgemäßen Verfahren nachstehend näher erläutert. Es zeigen: Figur 1 einen Schnitt durch eine Form mit aufgelegter Folie und einem Steuergerät für das Absaugsystem, Figur 2 einen Schnitt durch eine Form mit einer anderen Ausführungsart zur Evakuierung des Abdichtbereiches.The device according to the invention is shown in a drawing and explained in more detail below in connection with the method according to the invention. Show it: Figure 1 shows a section through a form with an applied Foil and a control device for the suction system, Figure 2 shows a section through a Form with a different type of design for evacuating the sealing area.

In Figur 1 ist die Forminnenwandung einer Formhälfte 1 mit einem Trennmittel vorpräpariert, auf das eine Gel-coat-Schicht2 aufgetragen ist. Auf die Gel-coaü-Schicht 2 ist eine Randzonenverstärkungseinlage 3 aufgelegt. Der Formrand 13 weist eine Nut 11 auf. Auf der Randzonenarmierungseinlage 3 und auf dem Formrand 13 liegt eine Folie 14, die mit einem Absauganschluß 15 versehen, ist. Im Abdichtbereich ist die Folie 14 mit einer Wulst 21a vc Dehen. Außerdem ist in diesem Bereich der Folie eine Stretchgewebeeinlage 60 zur Verstärkung angeordnet. Durch die Wulst 2 a geht eine Absaugleitung 61 hindurch, die in die Absaugleitung 15 mündet und mit einem Absperrelement 63 versehen ist. Die Absperrleitung 15 führt zu einer Absaugpumpe 17. Von der Absaugpumpe 17 aus gesehen ist hinter der Vereinigungsstelle mit der Absaugleitung 61 in der Absaugleitung 15 ebenfalls ein Absperrelement 63 angeordnet. Schließlich zweigt von der Absaugleitung 15 noch ein Belüftungsstutzen 64 ab. Er weist auch ein Absperrelement auf, Die Absperrelemente 62, 63, 64 und 65 sind über Impulsleitlmgen 66, 67 und 68 mit einem Steuergerät 69 verbunde.In Figure 1, the mold inner wall of a mold half 1 is with a release agent pre-prepared, on which a gel coat layer2 is applied. On the gel-coaü layer 2 an edge zone reinforcement insert 3 is placed. The mold edge 13 has a Slot 11. On the edge zone reinforcement insert 3 and on the mold edge 13 is a Foil 14, which is provided with a suction connection 15, is. In the sealing area is the Foil 14 with a bead 21a vc stretching. In addition, the foil is in this area a stretch fabric insert 60 arranged for reinforcement. Goes through the bead 2 a a suction line 61 through which opens into the suction line 15 and with a Shut-off element 63 is provided. The shut-off line 15 leads to a suction pump 17. Seen from the suction pump 17 is behind the junction with the Suction line 61 a shut-off element 63 is also arranged in suction line 15. Finally, a ventilation nozzle 64 branches off from the suction line 15. He also includes a shut-off element. The shut-off elements 62, 63, 64 and 65 are over Impulsleitlmgen 66, 67 and 68 connected to a control unit 69.

Die Arbeitsweise des Steuergerätes 69, das arbeitstechnisch gesehen mehrere Einzelaggregate umfaßt, ist folgende: Die Absaugpinnpe 17 wird eingeschaltet und löst über die Impulslei-tung 70 im Steuergerät 69 einen Impuls aus, der das Absperrelement 62 öffnet, die Absperrelemente 63 und 65 jedoch schließt, sofern diese noch offen stehen. Nach einer vorgegebenen Zeitspanne, auf die das Steuergerät eingestellt ist und die erfahrungsgemäß zum ausreichenden Abdichten von Wulst und Nut genügt, wird das Absperrelement 62 geschlossen, so daß zwischen Nut 11 und Wulst 21a der angelegte Unterdruck erhalten bleibt. (Gemäß einer Variation bleibt das Absperrelement 62 offen, so daß während der ganzen Arbeitszeit der Ab dichtbereich unter Saugwirkung steht, um ein Lockern der Abdichtung durch Leckverluste zu vermeiden). Gleichzeitig wird über die Impulsleitung 68 das Absperrelement 63 für eine vorgegebene Zeitspanne geöffr:#t, die dahingehend abgestimmt ist, daß die Randzonenarmierungseinlage 3 in ausreichendem Maße in die Gel-coat-Schicht durch die Evakuierwirkung eingedrückt wird.The mode of operation of the control unit 69, seen from a technical point of view comprises several individual units is as follows: The suction pin 17 is switched on and triggers a pulse in the control unit 69 via the pulse line 70, which causes the Shut-off element 62 opens, the shut-off elements 63 and 65, however, close, provided that these are still open. After a predetermined period of time which the control unit is set and which experience has shown for sufficient sealing of bead and groove is sufficient, the shut-off element 62 is closed so that between Groove 11 and bead 21a the applied negative pressure is maintained. (According to a variation the shut-off element 62 remains open, so that during the entire working time of the Ab sealing area is under suction in order to loosen the seal due to leakage to avoid). At the same time, the shut-off element 63 is activated via the impulse line 68 opened for a specified period of time: #t, which is coordinated so that the Edge zone reinforcement insert 3 to a sufficient extent in the gel-coat layer the evacuation effect is depressed.

Nach Ablaufen dieser ZeX panne wird das Absperrelement 62 wieder geöffnet und zwar gleichzeitig mit dem Absperrelement 65 im Belüftungsstutzen 64. Die Absaugpumpe 17 wird gleichzeitig abgeschaltet. Durch die nun erfolgende Belüftung wird das Vakuum im Abdichtbereich und im Bereich der Armierungseinlage aufgehoben, so daß sich die Folie 3 leicht abnehmen läßt.After this period of time has elapsed, the shut-off element 62 is opened again at the same time as the shut-off element 65 in the ventilation nozzle 64. The suction pump 17 is switched off at the same time. The ventilation that now takes place creates a vacuum lifted in the sealing area and in the area of the reinforcement insert, so that the Foil 3 can be easily removed.

In Figur 2 ist di-e Absaugleitung 61 in der Formhälfte 1 angeordnet uiid führt vom Boden der Nut 11 weg nach außen zur Absaugpumpe 17. In der Absaugleitung 61 ist ein handbetätigbares Absperrelement 62 vorgesehen. Die Folie 14 ist hier ebenfalls mit einer Wulst 21a ausgestattet.In FIG. 2, the suction line 61 is arranged in the mold half 1 uiid leads away from the bottom of the groove 11 to the outside to the suction pump 17. In the suction line 61 a manually operated shut-off element 62 is provided. Slide 14 is here also equipped with a bead 21a.

Claims (9)

Patentansprüche:Patent claims: Verfahren zum Herstellen von randzonenverstärkten Schaumstoffkörpern.in Füllbauweise, gemäß Patent . ... ... (Anmeldung P 21 04 585.2) nach folgenden Schritten: a) Die Innenfläche einer Form wird mit einem Kleber oder Gel-coat beschichtet; b) auf die Gel-coat- bzw. Kleber-Schicht wird während ihres noch viskosen Zustandes eine Randzonenarmierungseinlage gelegt; c) über die Randzonenarmierungseinlage wird eine luftdichte, anschmiegsame Folie gelegt und außerhalb des Bereiches der Armierungseinlage an der Form bzw. Außenhaut abgedichtet; d) die zwischen der Form bzw. Außenhaut und der Folie vorhandene Luft wird abgesaugt, unter damit verbundenem Einpressen der Armierungseinlage in die Gel-coat- bzw. Kleber-Schicht; e) die Folie wird entfernt; f) die Form wird verschlossen; g) in den Formenhohlraum wird ein flüssiges, treibfähiges Reaktionsgemisch eingetragen; h) nach dem Ausschäumen des treibfähigen Gemisches wird der fertige Schaumstoffkörper aus der Form entnommen; dadurch gekennzeichnet, daß das Abdichten gemäß Verfahrensschritt) durch Absaugen der Luft im Abdichtbereich zwischen Folie und Form bzw. Außenhaut erfolgt.Process for the production of edge zone reinforced foam bodies. In Fill construction, according to patent. ... ... (registration P 21 04 585.2) according to the following steps: a) The inner surface of a mold is coated with an adhesive or gel coat; b) on the gel coat or adhesive layer while it is still viscous an edge zone reinforcement insert placed; c) over the edge zone reinforcement insert an airtight, conformable film and placed outside the area of the reinforcement insert sealed on the mold or outer skin; d) between the mold or outer skin and the air present in the film is sucked off with an associated pressing the reinforcement insert in the gel coat or adhesive layer; e) the film is removed; f) the mold is closed; g) in the mold cavity is a liquid, propellant Entered reaction mixture; h) after the foaming mixture has been foamed the finished foam body is removed from the mold; through this characterized in that the sealing according to process step) by sucking off the air takes place in the sealing area between the film and the mold or outer skin. 2.) Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Absaugen der Luft aus dem Abdichtbereich vor dem Absaugen der Luft aus dem Bereich der Armierungseinlage erfolgt.2.) The method according to claim 1, characterized in that the suction the air from the sealing area before the air is sucked out of the area of the reinforcement insert he follows. 3.) Vorrichtung zur Durchführung des Verfahrens, bestehend aus einer Form und einer auf die Forminnenseite auflegbare, luftdichte, anschmiegbare und mit mindestens einem, an eine Absaugpumpe anschließbaren Absauganschluß versehene Folie, wobei mindestens ein Abdichtelement am Rand der Form nach Art einer Nut angeordnet ist, dadurch gekennzeichnet, daß der Hohlraum der Nut (11) über eine Absaugleitung (61) an eine Absaugpumpe (17) anschließbar ist.3.) Device for performing the method, consisting of a Form and one that can be placed on the inside of the form, airtight, conformable and provided with at least one suction connection that can be connected to a suction pump Foil, wherein at least one sealing element is arranged on the edge of the mold in the manner of a groove is, characterized in that the cavity of the groove (11) via a suction line (61) can be connected to a suction pump (17). 4.) Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Nut (11) Keilform aufweist, in die bei aufgelegter Folie (<4) eine keilförmige Wulst (21a) eingreift.4.) Device according to claim 3, characterized in that the groove (11) has a wedge shape, in which a wedge-shaped bead when the film is applied (<4) (21a) intervenes. 5.) Vorrichtung nach Anspruch 3 und 4, dadurch gekennzeichnet, daß die Folie (14) mindestens eine Abdichtwulst (21a) aufweist.5.) Apparatus according to claim 3 and 4, characterized in that the film (14) has at least one sealing bead (21a). 6.) Vorrichtung nach Anspruch 3 bis 5, dadurch gekennzeichnet, daß die Folie. (14) mindestens im Bereich der Abdichtung eine Verstärkung durch eine Stretchgewebeeinlage (60) aufweist.6.) Device according to claim 3 to 5, characterized in that the foil. (14) at least in the area of the seal a reinforcement by a Has stretch fabric insert (60). 7.) Vorrichtung nach Ansprüchen 3 bis 6, dadurch gekennzeichn#t, daß die vom Bereich der Armierungseinlage 3 und die vom Abdichtbereich wegführenden Absaugleitungen (15, 61) an eine gemeinsame Absaugpumpe (17) angeschlossen sind.7.) Device according to claims 3 to 6, characterized in that those leading away from the area of the reinforcement insert 3 and those leading away from the sealing area Suction lines (15, 61) are connected to a common suction pump (17). 8.) Vo7zrichtung nach Anspruch 7, dadurch gekennzeichnet, daß in den Absaugleitungen (15, 61) Absperrelemente (62, 63) angeordnet sind.8.) Vo7zrichtung according to claim 7, characterized in that in the Suction lines (15, 61) shut-off elements (62, 63) are arranged. 9.) Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Absperrelemente (62, 63) iiber ein Steuergerät (69) betitigbar sind.9.) Device according to claim 8, characterized in that the shut-off elements (62, 63) can be actuated via a control unit (69). L e e r s e i t eL e r s e i t e
DE19712122581 1971-02-01 1971-05-07 High duty plastic foam - moulded onto reinforced boundary layer previously moulded under vacuum Pending DE2122581A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19712122581 DE2122581A1 (en) 1971-05-07 1971-05-07 High duty plastic foam - moulded onto reinforced boundary layer previously moulded under vacuum
JP47010265A JPS518990B1 (en) 1971-02-01 1972-01-29
IT19994/72A IT947133B (en) 1971-02-01 1972-01-29 PROCESS AND PLANT FOR THE FABBRI CATION OF REINFORCED EXPANDED MATERIAL BODIES IN MARGINAL AREAS UNDER FULL CONSTRUCTION
FR7203366A FR2124363B1 (en) 1971-02-01 1972-02-01
GB466072A GB1378592A (en) 1971-02-01 1972-02-01 Reinforced foam mouldings
US05/532,132 US4099280A (en) 1971-02-01 1974-12-12 Hull, mold therefor, and process for producing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712122581 DE2122581A1 (en) 1971-05-07 1971-05-07 High duty plastic foam - moulded onto reinforced boundary layer previously moulded under vacuum

Publications (1)

Publication Number Publication Date
DE2122581A1 true DE2122581A1 (en) 1972-11-16

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Application Number Title Priority Date Filing Date
DE19712122581 Pending DE2122581A1 (en) 1971-02-01 1971-05-07 High duty plastic foam - moulded onto reinforced boundary layer previously moulded under vacuum

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DE (1) DE2122581A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917344A1 (en) * 1979-04-28 1980-11-06 Messerschmitt Boelkow Blohm Moulding tool for components of resin bonded carbon fibre - has sealing mask enclosing mould details in autoclave
DE10062899A1 (en) * 2000-12-16 2002-06-20 Volkswagen Ag Vehicle air bag cover panel manufacturing process involves applying a fabric layer to the rear face of a gelling slush skin with a flexible pressure applicator which adapts to the skin profile
EP3192636A1 (en) * 2011-08-30 2017-07-19 Johnson Controls Technology Company Manufacturing a vehicle trim component via compression forming and injection molding
WO2018086889A1 (en) * 2016-11-08 2018-05-17 C. Otto Gehrckens GmbH & Co. KG Mould for producing fibre-reinforced plastics parts, seal for such a mould and method for sealing off such a mould
US10464280B2 (en) 2011-08-30 2019-11-05 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Trim component for vehicle interior
US10981532B2 (en) 2018-06-28 2021-04-20 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Vehicle trim component

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917344A1 (en) * 1979-04-28 1980-11-06 Messerschmitt Boelkow Blohm Moulding tool for components of resin bonded carbon fibre - has sealing mask enclosing mould details in autoclave
DE10062899A1 (en) * 2000-12-16 2002-06-20 Volkswagen Ag Vehicle air bag cover panel manufacturing process involves applying a fabric layer to the rear face of a gelling slush skin with a flexible pressure applicator which adapts to the skin profile
EP3192636A1 (en) * 2011-08-30 2017-07-19 Johnson Controls Technology Company Manufacturing a vehicle trim component via compression forming and injection molding
US10118325B2 (en) 2011-08-30 2018-11-06 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Vehicle trim component
US10464280B2 (en) 2011-08-30 2019-11-05 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Trim component for vehicle interior
WO2018086889A1 (en) * 2016-11-08 2018-05-17 C. Otto Gehrckens GmbH & Co. KG Mould for producing fibre-reinforced plastics parts, seal for such a mould and method for sealing off such a mould
US10981532B2 (en) 2018-06-28 2021-04-20 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Vehicle trim component

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