AT2064U1 - METHOD FOR PRODUCING A COMPOSITE BODY - Google Patents

METHOD FOR PRODUCING A COMPOSITE BODY Download PDF

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Publication number
AT2064U1
AT2064U1 AT9997U AT9997U AT2064U1 AT 2064 U1 AT2064 U1 AT 2064U1 AT 9997 U AT9997 U AT 9997U AT 9997 U AT9997 U AT 9997U AT 2064 U1 AT2064 U1 AT 2064U1
Authority
AT
Austria
Prior art keywords
film
molded part
mold
plastic
composite body
Prior art date
Application number
AT9997U
Other languages
German (de)
Inventor
Georg Dipl Ing Steinbichler
Josef Dipl Ing Giessauf
Original Assignee
Engel Gmbh Maschbau
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 Engel Gmbh Maschbau filed Critical Engel Gmbh Maschbau
Priority to AT9997U priority Critical patent/AT2064U1/en
Priority to DE29802032U priority patent/DE29802032U1/en
Publication of AT2064U1 publication Critical patent/AT2064U1/en

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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16—Lining or labelling
    • 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
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C43/183—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould
    • B29C43/184—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould shaped by the compression of the material 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C2045/0079—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping applying a coating or covering
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29L2031/3044—Bumpers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

Verfahren zur Herstellung eines Verbundkörpers, wobei auf einen Formteil aus Kunststoff eine Folie aufgepreßt wird. Das Aufpressen der Folie erfolgt, während der Formteil noch an einer Formhälfte der zu seiner Herstellung verwendeten Form anliegt.Method for producing a composite body, a film being pressed onto a molded part made of plastic. The film is pressed on while the molded part is still in contact with one half of the mold used for its production.

Description

AT 002 064 UlAT 002 064 Ul

Die Erfindung betrifft ein Verfahren zur Herstellung eines Verbundkörpers, wobei auf einen Formteil aus Kunststoff eine Folie aufgepreßt wird.The invention relates to a method for producing a composite body, a film being pressed onto a molded part made of plastic.

Verbundkörper, deren Abmessungen und statische Eigenschaften durch einen Formteil aus Kunststoff bestimmt sind, wogegen eine Dekorfolie das Aussehen definiert, werden zunehmend von Bedeutung. Dies gilt insbesondere für die Autoindustrie, wo beispielsweise Stoßfänger in Form derartiger Verbundkörper Verwendung finden. Die Dekorfolien können insbesondere aus Kunststoff, aber auch aus Textil, Leder, Metall und Verbundkörpem aus solchen Materialien, bestehen.Composite bodies, the dimensions and static properties of which are determined by a molded part made of plastic, whereas a decorative film defines the appearance, are becoming increasingly important. This applies in particular to the automotive industry, where for example bumpers in the form of such composite bodies are used. The decorative films can in particular consist of plastic, but also of textile, leather, metal and composite bodies made of such materials.

Die übliche Herstellung solcher Verbundkörper erfolgt derart, daß eine Folie, insbesondere eine bereits durch Tiefeiehen vorgeformte Folie, mit flüssigem Kunststoff hinterfüllt wird, welcher anschließend erstarrt. Die Verteilung des Kunststoffes erfolgt dabei gelegentlich in einer offenen Form (Hinterpressen) oder in einer Tauchform (Hinterprägen), um die beim eigentlichen Spritzgießen auftretenden hohen Belastungen der Folie zu vermeiden und vergleichsweise dünne und damit billigere Folien verwenden zu können.The usual production of such composite bodies takes place in such a way that a film, in particular a film already preformed by deep drawing, is backfilled with liquid plastic, which then solidifies. The plastic is occasionally distributed in an open form (back pressing) or in an immersion form (back embossing) in order to avoid the high loads on the film that occur during the actual injection molding and to be able to use comparatively thin and therefore cheaper films.

Es ist auch schon vorgeschlagen worden, Dekorfolien mit einem bereits erstarrten Formteil aus Kunststoff nachträglich zu verbinden. Die Folie kann somit bei der Herstellung des Formteiles nicht beschädigt werden. Die somit verwendbaren dünnen Folien müssen allerdings in einem gesonderten Arbeitsgang mit dem Formteil verbunden werden. Hiefür ist gemäß einem bekannten Vorschlag (vgl. DE 40 24 274 A1) vorgesehen, den Formteil aus Kunststoff in eine Formhälfte einer schließbaren Form einzulegen, an deren anderer Formhälfte die Folie anliegt, woraufhin der Zwischenraum durch einen die beiden Teile verbindenden Schaum ausgefüllt wird.It has also already been proposed to subsequently connect decorative foils to an already solidified molded part made of plastic. The film can therefore not be damaged during the production of the molded part. However, the thin films that can be used in this way must be connected to the molded part in a separate operation. For this purpose, according to a known proposal (cf. DE 40 24 274 A1), the molded part made of plastic is placed in a mold half of a closable mold, on the other mold half of which the film rests, whereupon the intermediate space is filled with a foam connecting the two parts.

Beim bekannten Verfahren lassen sich dadurch Formkosten sparen, daß die Folie über eine Formhälfte jener Form, in der die Verbindung von Folie und Formteil erfolgt, vorgeformt wird. Dennoch hat das Verfahren in die Praxis kaum Eingang gefunden, da der Verfahrensschritt des Verbindens von Folie und Formteil unverhältnismäßig viel Zeit erfordert.In the known method, molding costs can be saved by preforming the film over a mold half of the mold in which the film and molded part are connected. Nevertheless, the process has hardly found its way into practice, since the process step of connecting the film and the molded part takes a disproportionate amount of time.

Die Erfindung vermeidet diesen Nachteil dadurch, daß bei einem Verfahren der eingangs definierten Art das Aufpressen der Folie erfolgt, während der Formteil noch an einer Formhälfte der zu seiner Herstellung verwendeten Form anliegt. 2 AT 002 064 UlThe invention avoids this disadvantage in that, in a method of the type defined at the outset, the film is pressed on while the molded part is still resting on a mold half of the mold used for its production. 2 AT 002 064 Ul

Im Gegensatz zum Verfahren nach DE 40 24 274 A1 unterbleibt hier ein gesonderter Schäumvorgang. Die Verbindung zwischen Folie und Formteil kann durch eine gewöhnliche Kleberschicht oder auch schon durch das bloße Erwärmen der Folie erzielt werden. Für dieses Erwärmen kann die Restwärme des Kunststoffteiles genutzt werden.In contrast to the method according to DE 40 24 274 A1, there is no separate foaming process here. The connection between the film and the molded part can be achieved by an ordinary adhesive layer or simply by heating the film. The residual heat of the plastic part can be used for this heating.

Die Spritzgießform kann beim erfindungsgemäßen Verfahren zu einem frühen Zeitpunkt geöffnet werden, da der Kunststoffteil zunächst noch am Kern bleibt, wo noch gekühlt werden kann, während die Folie aufkaschiert wird. Daher verlängert sich die Zykluszeit nicht um die gesamte Dauer des Aufkaschierens, sondern der Kaschiervorgang findet in der Zeit statt, in der normalerweise die Form noch geschlossen wäre. Im optimalen Fall ergibt sich also keine Zykluszeitverlängerung.In the method according to the invention, the injection mold can be opened at an early point in time, since the plastic part initially remains on the core, where it is still possible to cool while the film is being laminated on. Therefore, the cycle time is not extended by the entire duration of the lamination, but the lamination process takes place in the time in which the mold would normally still be closed. In the optimal case, there is no cycle time extension.

Da das erfindungsgemäße Verfahren die Verwendung dünner Folien erlaubt, kann deren Verformung durch das Anpressen an den Formteil aus Kunststoff beispielsweise mittels eines unter Druck stehenden Fluids erfolgen. Die Folie kann jedoch auch an eine gegenüberliegende Formhälfte angeformt oder in diese eingelegt werden und durch Schließen der Form mit dem vorgefertigten Formteil verbunden werden.Since the method according to the invention allows the use of thin foils, their deformation can take place by pressing them onto the molded part made of plastic, for example by means of a fluid under pressure. However, the film can also be molded onto an opposite mold half or inserted into it and connected to the prefabricated molded part by closing the mold.

Ein Ausführungsbeispiel der Erfindung wird anschließend anhand der Zeichnung erläutert, welche in Fig. 1 - 4 vier aufeinanderfolgende Verfahrensschritte schematisch darstellt.An embodiment of the invention is then explained with reference to the drawing, which schematically shows four successive method steps in FIGS. 1-4.

Im dargestellten Ausführungsbeispiel wird zunächst (Fig. 1) durch Einspritzen von thermoplastischem Kunststoff in das durch die Formhälften 1 und 2 gebildete Formnest ein Formteil 7 gebildet. Statt der dargestellten Spritzgießform könnte auch eine Tauchform verwendet werden, durch deren Zufahren der Kunststoff in der Form verteilt wird, oder sogar eine offene Form. Besondere Vorteile würden sich jedoch daraus nicht ergeben, da die Herstellung des Formteiles 7 noch ohne Rücksicht auf die erfindungsgemäß erst später aufgebrachte Dekorfolie erfolgen kann. Nach Herstellung des Formteiles 7 wird die Form so rasch wie möglich geöffnet (Fig. 2) und eine Folie 5, welche zwischen einem offenen Rahmen 3 und einem an der Rückseite geschlossenen Rahmen 4 eingespannt ist, in die geöffnete Form eingebracht. Anschließend wird (Fig. 3) der offene Rahmen 3 an die Formhälfte 1 angelegt und der Raum zwischen der Rückseite des Rahmens 4 und der Folie 5 über eine 3 AT 002 064 UlIn the exemplary embodiment shown, a molded part 7 is first formed (FIG. 1) by injecting thermoplastic plastic into the mold cavity formed by the mold halves 1 and 2. Instead of the injection mold shown, an immersion mold could also be used, by means of which the plastic is distributed in the mold, or even an open mold. However, this would not result in any particular advantages, since the molded part 7 can still be produced regardless of the decorative film which was only applied later according to the invention. After the molded part 7 has been produced, the mold is opened as quickly as possible (FIG. 2) and a film 5, which is clamped between an open frame 3 and a frame 4 closed on the rear, is introduced into the opened mold. Then (Fig. 3) the open frame 3 is placed on the mold half 1 and the space between the back of the frame 4 and the film 5 via a 3 AT 002 064 Ul

Leitung 9 unter Druck gesetzt. Die Foiie 5 preßt sich dadurch an den Formteil 7 an, wodurch der Verbundkörper 8 entsteht, der gemäß Fig. 4 aus der Form entnommen werden kann. 4Line 9 pressurized. The film 5 thereby presses against the molded part 7, whereby the composite body 8 is formed, which can be removed from the mold according to FIG. 4. 4th

Claims (1)

AT 002 064 Ul Anspruch: Verfahren zur Herstellung eines Verbundkörpers, wobei auf einen Formteil aus Kunststoff eine Folie aufgepreßt wird, dadurch gekennzeichnet, daß das Aufpressen der Folie erfolgt, während der Formteil noch an einer Formhälfte der zu seiner Herstellung verwendeten Form anliegt. 5AT 002 064 Ul Claim: Process for producing a composite body, a film being pressed onto a molded part made of plastic, characterized in that the film is pressed on while the molded part is still resting on a mold half of the mold used for its production. 5
AT9997U 1997-02-17 1997-02-17 METHOD FOR PRODUCING A COMPOSITE BODY AT2064U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT9997U AT2064U1 (en) 1997-02-17 1997-02-17 METHOD FOR PRODUCING A COMPOSITE BODY
DE29802032U DE29802032U1 (en) 1997-02-17 1998-02-06 Device for pressing a film onto a molded part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT9997U AT2064U1 (en) 1997-02-17 1997-02-17 METHOD FOR PRODUCING A COMPOSITE BODY

Publications (1)

Publication Number Publication Date
AT2064U1 true AT2064U1 (en) 1998-04-27

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AT9997U AT2064U1 (en) 1997-02-17 1997-02-17 METHOD FOR PRODUCING A COMPOSITE BODY

Country Status (2)

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AT (1) AT2064U1 (en)
DE (1) DE29802032U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826498A1 (en) * 1998-06-13 1999-12-23 Brocke Kg I B S Hot lining of plastic moldings or pressings with decorative material, producing parts for vehicle interior cladding

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT3799U1 (en) * 1999-04-15 2000-08-25 Apt Prototypen Produktion Tech METHOD FOR THE PRODUCTION OF COATED OR MULTIPLE OBJECTS
DE10031697A1 (en) * 2000-06-27 2002-01-10 Volkswagen Ag Making surface-finished composite of metal and plastic sheet, molds metal for use as deep-drawing stamp forming and bonding with plastic sheet
DE10258891A1 (en) * 2002-12-17 2004-07-01 Bayerische Motoren Werke Ag Flexible cover material application onto front side of a flat internal component for a vehicle involves stretching a material section onto component front, holding with a clamp and turning edges onto rear side

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826498A1 (en) * 1998-06-13 1999-12-23 Brocke Kg I B S Hot lining of plastic moldings or pressings with decorative material, producing parts for vehicle interior cladding

Also Published As

Publication number Publication date
DE29802032U1 (en) 1998-09-24

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