EP1537811B1 - Process to overmold a support for a bathtub, a shower tray or the like - Google Patents

Process to overmold a support for a bathtub, a shower tray or the like Download PDF

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Publication number
EP1537811B1
EP1537811B1 EP04027483A EP04027483A EP1537811B1 EP 1537811 B1 EP1537811 B1 EP 1537811B1 EP 04027483 A EP04027483 A EP 04027483A EP 04027483 A EP04027483 A EP 04027483A EP 1537811 B1 EP1537811 B1 EP 1537811B1
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EP
European Patent Office
Prior art keywords
medium
pressure
moulded part
wall
mould
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Not-in-force
Application number
EP04027483A
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German (de)
French (fr)
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EP1537811A1 (en
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.)
Dusar Kunststoff- und Metallwaren GmbH
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Dusar Kunststoff- und Metallwaren GmbH
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Priority to PL04027483T priority Critical patent/PL1537811T3/en
Publication of EP1537811A1 publication Critical patent/EP1537811A1/en
Application granted granted Critical
Publication of EP1537811B1 publication Critical patent/EP1537811B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K3/00—Baths; Douches; Appurtenances therefor
    • A47K3/02—Baths
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K3/00—Baths; Douches; Appurtenances therefor
    • A47K3/16—Devices for fastening baths to floors or walls; Adjustable bath feet ; Lining panels or attachments therefor
    • A47K3/1605—Hard foam bathtub supports

Definitions

  • the invention relates to a method for applying a plastic foam existing support base on the wall of a bathtub, shower tray or the like as a molded part, wherein the thin-walled molding is placed in a closed mold and remaining in a between the wall of the molding and the associated wall of the mold Interspace then be introduced to a foam body ausreagierende plastic foam components.
  • a method with the aforementioned features is for applying a carrier base to the bottom of a shower tray from the DE 93 02 723 U1 known.
  • the shower tray is inserted into a mold, wherein in a remaining between the bottom of the shower tray and the associated mold wall space then ausreagierende to the desired support base plastic foam components are filled.
  • the plastic foam components react with each other, so that one of the formed by the distance and the formation of the formed between the shower tray and the associated molding surfaces shape Carrier base is created, which is firmly connected to the shower tray, that is glued.
  • a generic method is also in the AU 1190976 A described, in which a solid block or a corresponding tool is placed with abutment against the inner surface of the molding in the interior of the molding and held therein until the end of the foaming process.
  • the invention is therefore based on the object to improve a method with the features mentioned in such a way that the aforementioned disadvantages are avoided.
  • the invention provides in its basic idea that the interior of the molded part sealed at its upper edge against the mold is filled with a medium and kept under pressure during the reaction time of the plastic foam components, which is due to the reaction of the plastic foam components , is set to the wall of the molding pressure acting. This advantageously avoids that the pressure arising during the reaction of the plastic foam components used brings about changes in shape of the shower tray or the bathtub.
  • the pressure acting on the wall of the molded part monitored during the processing time and the pressure of the medium is adjusted according to fluctuations in the pressure.
  • the medium is guided via a cooling device in order to absorb and dissipate heat flowing into the molded part from the machining process. This avoids heating of the medium up to a temperature range which may involve pressure changes of the medium.
  • the medium is preheated to such a natural temperature that caused by changes in the temperature of the medium pressure fluctuations are reduced.
  • water is provided as the medium.
  • the medium is a noble gas.
  • the mold 10 which is closed on all sides, can be opened on its lid 11 by, for example, setting the lid 11 on the mold 10 such that it can be pivoted open.
  • a thermoformed and therefore thin-walled bathtub 14 is inserted as a molded part to be machined, wherein introduced into the remaining between the outer contour of the bath 14 and the side walls 13 and the lid 14 of the mold 10 gap 15 plastic foam components be complied with after closing the lid 11 with each other while filling the gap 15 completely, so that the desired support base is formed and firmly connected to the body of the bath 14.
  • a back pressure is generated by via a connecting line 17 in the interior 16 of the bath 14 a suitable medium, preferably taken from the environment air is introduced with such pressure that the force acting on the wall of the bath 14 reaction pressure is compensated.
  • a suitable medium preferably taken from the environment air is introduced with such pressure that the force acting on the wall of the bath 14 reaction pressure is compensated.
  • the resting on the floor 12 of the mold 10 upper edge of the bath 14 is sealed by a seal, not shown, against the mold 10.
  • a vent line 18 is provided in addition to the connecting line 17 for the air supply. Both in the connecting line and in the vent line 18 are each a pressure gauge 19 for pressure control and a control system 20 for carrying out the ventilation of the interior 16 of the bath 14 is turned on.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Catalysts (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Process for applying a supporting substrate on the wall of a bath or shower tray comprises filling the inner chamber (16) of a molded part (14) sealed against the mold (10) on its upper edge with a medium, and holding the plastic foamed components under a pressure during the reaction time. The pressure can be adjusted to the pressure produced on the plastic components and acting on the wall of the molded part. Preferred Features: The medium is introduced via a cooling device to remove and deviate heat flowing into the molded part from the process. The medium is pre-heated to a temperature so that pressure fluctuations produced by changing the temperature of the medium are reduced. The medium is air, water or noble gas.

Description

Die Erfindung betrifft ein Verfahren zum Aufbringen eines aus einem Kunststoffschaum bestehenden Trägerunterbaus auf die Wandung einer Badewanne, Duschtasse oder dergleichen als Formteil, wobei das dünnwandige Formteil in eine geschlossene Form eingelegt wird und in einen zwischen der Wandung des Formteils und der zugeordneten Wand der Form verbleibenden Zwischenraum anschließend zu einem Schaumkörper ausreagierende Kunststoffschaum-Komponenten eingebracht werden.The invention relates to a method for applying a plastic foam existing support base on the wall of a bathtub, shower tray or the like as a molded part, wherein the thin-walled molding is placed in a closed mold and remaining in a between the wall of the molding and the associated wall of the mold Interspace then be introduced to a foam body ausreagierende plastic foam components.

Ein Verfahren mit den vorgenannten Merkmalen ist zum Aufbringen eines Trägerunterbaus auf den Boden einer Duschtasse aus der DE 93 02 723 U1 bekannt. Gemäß der dieser Druckschrift zu entnehmenden Verfahrensweise wird die Duschtasse in eine Form eingelegt, wobei in einen zwischen dem Boden der Duschtasse und der zugeordneten Formwand verbleibenden Zwischenraum anschließend zu dem gewünschten Trägerunterbau ausreagierende Kunststoffschaum-Komponenten eingefüllt werden. Anschließend reagieren die Kunststoffschaum-Komponenten miteinander aus, so dass ein der durch den Abstand und die Ausbildung des zwischen der Duschtasse und den zugeordneten Formflächen gebildeten Gestalt entsprechender Trägerunterbau entsteht, der fest mit der Duschtasse verbunden, d. h. verklebt ist.A method with the aforementioned features is for applying a carrier base to the bottom of a shower tray from the DE 93 02 723 U1 known. According to the procedure to be taken from this document, the shower tray is inserted into a mold, wherein in a remaining between the bottom of the shower tray and the associated mold wall space then ausreagierende to the desired support base plastic foam components are filled. Subsequently, the plastic foam components react with each other, so that one of the formed by the distance and the formation of the formed between the shower tray and the associated molding surfaces shape Carrier base is created, which is firmly connected to the shower tray, that is glued.

Bei diesem Verfahren ergibt sich das Problem, dass der beim Ausreagieren der Kunststoffschaum-Komponenten in der Form entstehende Druck auf die dünnwandige Duschtasse einwirkt und hier Formänderungen beispielsweise in Form von Einbeulungen hervorruft. Um dem entgegenzuwirken ist es bekannt, in der Form ein in den Innenraum der Duschtasse vorspringendes Gegenstück auszubilden, welches exakt der Form des Innenraums der Duschtasse nachgebildet ist und so den erforderlichen Gegendruck bewirkt, um Formänderungen der Duschtasse zu verhindern.In this method, there is the problem that the resulting in Ausreagieren the plastic foam components in the mold pressure acts on the thin-walled shower tray and here causes changes in shape, for example in the form of denting. To counteract this, it is known to form in the form of a protruding into the interior of the shower tray counterpart, which is exactly modeled on the shape of the interior of the shower tray and thus causes the required back pressure to prevent changes in shape of the shower tray.

Hiermit ist jedoch der Nachteil verbunden, dass die Oberflächen des Gegenstückes mit einer sehr hohen Genauigkeit bearbeitet sein müssen, damit nicht beim Aufdrücken der Duschtasse auf das Gegenstück sich Abdrücke des Gegenstückes in der dünnwandigen Duschtasse bilden. Ein weiterer Nachteil besteht darin, dass für unterschiedliche Formen und Abmessungen von Duschtassen jeweils auch unterschiedliche Gegenstücke bereitgestellt sein müssen; dies bedingt einen entsprechend großen Kosten- und Rüstaufwand für die Herstellung unterschiedlicher Duschtassen mit angeschäumten Trägerunterbau.However, this has the disadvantage that the surfaces of the counterpart must be machined with a very high accuracy, so that not form when pressing the shower tray on the counterpart impressions of the counterpart in the thin-walled shower tray. Another disadvantage is that each different counterparts must be provided for different shapes and dimensions of shower trays; This requires a correspondingly large cost and Rüstaufwand for the production of different shower trays with foamed support base.

Ein gattungsgemäßes Verfahren ist auch in der AU 1190976 A beschrieben, bei welchem ein fester Block oder ein entsprechendes Werkzeug mit Anlage gegen die innere Oberfläche des Formteils in den Innenraum des Formteils eingelegt und darin bis zum Ende des Schäumvorgangs gehalten wird.A generic method is also in the AU 1190976 A described, in which a solid block or a corresponding tool is placed with abutment against the inner surface of the molding in the interior of the molding and held therein until the end of the foaming process.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren mit den eingangs genannten Merkmalen derart zu verbessern, dass die vorgenannten Nachteile vermieden sind.The invention is therefore based on the object to improve a method with the features mentioned in such a way that the aforementioned disadvantages are avoided.

Die Lösung dieser Aufgabe ergibt sich aus dem Anspruch 1; vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The solution to this problem arises from the claim 1; advantageous embodiments and modifications of the invention are specified in the dependent claims.

Die Erfindung sieht in ihrem Grundgedanken vor, dass der Innenraum des an seinem oberen Rand gegen die Form abgedichteten Formteils mit einem Medium gefüllt und während der Reaktionszeit der Kunststoffschaum-Komponenten unter einem Druck gehalten wird, der auf den aufgrund der Reaktion der Kunststoffschaum-Komponenten entstehenden, auf die Wandung des Formteils einwirkenden Druck eingestellt wird. Hiermit ist in vorteilhafter Weise vermieden, dass der beim Ausreagieren der eingesetzten Kunststoffschaum-Komponenten entstehende Druck Formänderungen der Duschtasse beziehungsweise der Badewanne mit sich bringt.The invention provides in its basic idea that the interior of the molded part sealed at its upper edge against the mold is filled with a medium and kept under pressure during the reaction time of the plastic foam components, which is due to the reaction of the plastic foam components , is set to the wall of the molding pressure acting. This advantageously avoids that the pressure arising during the reaction of the plastic foam components used brings about changes in shape of the shower tray or the bathtub.

Nach einem Ausführungsbeispiel der Erfindung ist vorgesehen, dass der auf die Wandung des Formteils einwirkende Druck während der Bearbeitungszeit überwacht und der Druck des Mediums bei Schwankungen des Druckes entsprechend angepasst wird.According to one embodiment of the invention, it is provided that the pressure acting on the wall of the molded part monitored during the processing time and the pressure of the medium is adjusted according to fluctuations in the pressure.

Weiterhin kann vorgesehen sein, dass das Medium über eine Kühlvorrichtung geführt ist, um aus dem Bearbeitungsprozess in das Formteil einfließende Wärme aufzunehmen und abzuleiten. Hiermit wird eine Erwärmung des Mediums bis in einen Temperaturbereich vermieden, der unter Umständen Druckänderungen des Mediums mit sich bringt.Furthermore, it can be provided that the medium is guided via a cooling device in order to absorb and dissipate heat flowing into the molded part from the machining process. This avoids heating of the medium up to a temperature range which may involve pressure changes of the medium.

Es kann vorgesehen sein, dass das Medium auf eine derartige Eigentemperatur vorgewärmt wird, dass durch Änderungen der Temperatur des Mediums bedingte Druckschwankungen reduziert sind.It can be provided that the medium is preheated to such a natural temperature that caused by changes in the temperature of the medium pressure fluctuations are reduced.

Nach einem ersten Ausführungsbeispiel der Erfindung ist als Medium Wasser vorgesehen.According to a first embodiment of the invention, water is provided as the medium.

Alternativ kann als Medium Luft vorgesehen sein, was den Vorteil hat, dass diese Luft bei Ausübung des erfindungsgemäßen Verfahrens aus der Umgebung des durchzuführenden Bearbeitungsprozesses entnommen werden und auch in die Umgebung wieder abgegeben werden kann. Damit sind aufwendige Vorkehrungen für eine Bevorratung und Behandlung anderer Medien entbehrlich.Alternatively it can be provided as a medium air, which has the advantage that these air can be removed in the exercise of the method according to the invention from the environment of the processing process to be performed and also discharged into the environment again. This makes costly arrangements for the storage and treatment of other media dispensable.

Schließlich kann vorgesehen sein, dass das Medium ein Edelgas ist.Finally, it can be provided that the medium is a noble gas.

Das erfindungsgemäße Verfahren wird anhand einer schematischen Darstellung einer zur Bearbeitung in eine Form eingelegten Badewanne kurz näher erläutert.The method according to the invention is briefly explained in more detail with reference to a schematic representation of a bathtub inserted into a mold for processing.

Die allseits geschlossene Form 10 ist an ihrem Deckel 11 öffenbar, indem beispielsweise der Deckel 11 aufschwenkbar an der Form 10 eingerichtet ist. In den Innenraum der Form 10 ist eine vorzugsweise im Tiefziehverfahren hergestellte und daher dünnwandige Badewanne 14 als zu bearbeitendes Formteil eingelegt, wobei in den zwischen der Außenkontur der Badewanne 14 und den Seitenwänden 13 sowie den Deckel 14 der Form 10 verbleibenden Zwischenraum 15 Kunststoffschaum-Komponenten eingebracht werden, die nach Schließen des Deckels 11 miteinander ausreagieren und dabei den Zwischenraum 15 vollständig ausfüllen, so dass der gewünschte Trägerunterbau gebildet und mit dem Körper der Badewanne 14 fest verbunden wird.The mold 10, which is closed on all sides, can be opened on its lid 11 by, for example, setting the lid 11 on the mold 10 such that it can be pivoted open. Into the interior of the mold 10, a thermoformed and therefore thin-walled bathtub 14 is inserted as a molded part to be machined, wherein introduced into the remaining between the outer contour of the bath 14 and the side walls 13 and the lid 14 of the mold 10 gap 15 plastic foam components be complied with after closing the lid 11 with each other while filling the gap 15 completely, so that the desired support base is formed and firmly connected to the body of the bath 14.

Soweit durch das Ausreagieren der im Zwischenraum 15 befindlichen Kunststoffschaum-Komponenten ein auf die Wandung der Badewanne 14 einwirkender Druck entsteht, wird ein Gegendruck dadurch erzeugt, dass über eine Anschlussleitung 17 in den Innenraum 16 der Badewanne 14 ein geeignetes Medium, vorzugsweise aus der Umgebung entnommene Luft mit einem solchen Druck eingeleitet wird, dass der auf die Wandung der Badewanne 14 einwirkende Reaktionsdruck kompensiert ist. Dabei ist der auf dem Boden 12 der Form 10 aufliegende obere Rand der Badewanne 14 mittels einer nicht dargestellten Dichtung gegen die Form 10 abgedichtet.As far as by reacting the plastic foam components located in the intermediate space 15 creates a pressure acting on the wall of the bath 14, a back pressure is generated by via a connecting line 17 in the interior 16 of the bath 14 a suitable medium, preferably taken from the environment air is introduced with such pressure that the force acting on the wall of the bath 14 reaction pressure is compensated. In this case, the resting on the floor 12 of the mold 10 upper edge of the bath 14 is sealed by a seal, not shown, against the mold 10.

Neben der Anschlussleitung 17 für die Luftzufuhr ist eine Entlüftungsleitung 18 vorgesehen. Sowohl in die Anschlussleitung als auch in die Entlüftungsleitung 18 sind jeweils ein Manometer 19 zur Druckkontrolle sowie ein Regelsystem 20 zur Durchführung der Be- und Entlüftung des Innenraums 16 der Badewanne 14 eingeschaltet.In addition to the connecting line 17 for the air supply, a vent line 18 is provided. Both in the connecting line and in the vent line 18 are each a pressure gauge 19 for pressure control and a control system 20 for carrying out the ventilation of the interior 16 of the bath 14 is turned on.

Claims (7)

  1. Method for applying a support base consisting of a plastics foam to the wall of a bathtub (14), shower tray or the like as a moulded part, the thin-walled moulded part being inserted into a sealed mould (10) and fully curing plastics foam components being introduced into a space (15) left between the wall of the moulded part (14) and the associated wall (11, 13) of the mould (10) adjacent to a foam member, the interior (16) of the moulded part (14) being filled with a medium which causes a counter pressure against the pressure which occurs in the mould (10) when the plastics foam components cure, characterised in that the interior (16) of the moulded part (14), which is sealed at the upper edge thereof from the mould (10), is filled with a liquid or gaseous medium and during the reaction time of the plastics foam components is kept under a pressure which is set to the pressure acting on the wall of the moulded part (14), which pressure is produced by the reaction of the plastics foam components.
  2. Method according to claim 1, characterised in that the pressure acting on the wall of the moulded part (14) is monitored during the processing time, and when the pressure fluctuates, the pressure of the medium is adjusted accordingly.
  3. Method according to either claim 1 or claim 2, characterised in that the medium is guided via a cooling device, so as to absorb and dissipate heat entering the moulded part from the treatment process.
  4. Method according to any one of claims 1 to 3, characterised in that the medium is preheated to a characteristic temperature such that pressure fluctuations caused by changes in the temperature of the medium are reduced.
  5. Method according to any one of claims 1 to 4, characterised in that the medium is water.
  6. Method according to any one of claims 1 to 4, characterised in that the medium is air.
  7. Method according to any one of claims 1 to 4, characterised in that the medium is a noble gas.
EP04027483A 2003-12-01 2004-11-19 Process to overmold a support for a bathtub, a shower tray or the like Not-in-force EP1537811B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04027483T PL1537811T3 (en) 2003-12-01 2004-11-19 Process to overmold a support for a bathtub, a shower tray or the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356642A DE10356642A1 (en) 2003-12-01 2003-12-01 Process for processing a thin-walled molded part
DE10356642 2003-12-01

Publications (2)

Publication Number Publication Date
EP1537811A1 EP1537811A1 (en) 2005-06-08
EP1537811B1 true EP1537811B1 (en) 2010-04-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04027483A Not-in-force EP1537811B1 (en) 2003-12-01 2004-11-19 Process to overmold a support for a bathtub, a shower tray or the like

Country Status (4)

Country Link
EP (1) EP1537811B1 (en)
AT (1) ATE463996T1 (en)
DE (2) DE10356642A1 (en)
PL (1) PL1537811T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060377A3 (en) * 2007-11-16 2018-02-14 poresta systems GmbH Bath structure and method for producing a bath structure
DE102007058276B4 (en) * 2007-12-04 2012-06-21 Lisa Dräxlmaier GmbH Method for producing a haptic interior component
GB2531070A (en) * 2014-10-10 2016-04-13 Bathroom Brands Ip Holdings Ltd Bath unit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1190976A (en) 1975-03-20 1977-09-15 Macneil J R Bath supports
DE2620795A1 (en) * 1976-05-11 1977-12-01 T I Superform Ltd Ductile metal forming machine - has jaws gripping plate edges and moving forming templates
GB8802738D0 (en) * 1988-02-06 1988-03-09 British Aerospace Apparatus & method for fabricating superplastically formed structures
DE9302723U1 (en) * 1993-02-25 1993-04-29 Dusar Kunststoff- und Metallwaren GmbH, 5459 Anhausen Shower tray with support substructure

Also Published As

Publication number Publication date
DE10356642A1 (en) 2005-06-30
PL1537811T3 (en) 2010-12-31
ATE463996T1 (en) 2010-04-15
DE502004011023D1 (en) 2010-05-27
EP1537811A1 (en) 2005-06-08

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