DE102004060965A1 - Apparatus for producing hollow moldings e.g. refrigerator doors, by separately forming outer and inner moldings, transporting locally heated outer molding to inner molding and welding by pressing - Google Patents
Apparatus for producing hollow moldings e.g. refrigerator doors, by separately forming outer and inner moldings, transporting locally heated outer molding to inner molding and welding by pressing Download PDFInfo
- Publication number
- DE102004060965A1 DE102004060965A1 DE200410060965 DE102004060965A DE102004060965A1 DE 102004060965 A1 DE102004060965 A1 DE 102004060965A1 DE 200410060965 DE200410060965 DE 200410060965 DE 102004060965 A DE102004060965 A DE 102004060965A DE 102004060965 A1 DE102004060965 A1 DE 102004060965A1
- Authority
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- Prior art keywords
- molding
- molded part
- heating
- moldings
- mold
- 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.)
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- 238000000465 moulding Methods 0.000 title claims abstract description 165
- 238000003825 pressing Methods 0.000 title claims abstract description 5
- 238000003466 welding Methods 0.000 title description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000003856 thermoforming Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000007666 vacuum forming Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000007 visual effect Effects 0.000 description 10
- 239000006082 mold release agent Substances 0.000 description 8
- 241000252254 Catostomidae Species 0.000 description 5
- 230000002996 emotional effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011185 multilayer composite material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/266—Auxiliary operations after the thermoforming operation
- B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in the mould
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
-
- 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
- B29C2791/006—Using vacuum
-
- 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
- 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/261—Handling means, e.g. transfer means, feeding 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
- 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/261—Handling means, e.g. transfer means, feeding means
- B29C51/262—Clamping means for the sheets, e.g. clamping frames
-
- 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
- B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
-
- 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/427—Cooling of the material with a fluid blast
-
- 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/44—Removing or ejecting moulded articles
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/022—Particular heating or welding methods not otherwise provided for
- B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1412—Infrared [IR] radiation
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- 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
- B29L2007/002—Panels; Plates; 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
- B29L2031/00—Other particular articles
- B29L2031/724—Doors
-
- 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
- B29L2031/762—Household appliances
- B29L2031/7622—Refrigerators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Herstellung von Hohl-Formteilen gemäß dem Oberbegriff des Anspruches 1. Ferner betrifft die Erfindung ein Verfahren zur Herstellung von Hohl-Formteilen gemäß Anspruch 8.The The invention relates to a device for producing hollow molded parts according to the generic term of claim 1. Furthermore, the invention relates to a method for Production of hollow molded parts according to claim 8.
Bekannte Vorrichtungen der gattungsgemäßen Art sind so ausgestaltet, dass Hohl-Formteile mittels eines Twinsheet-Tiefziehverfahrens herstellbar sind. Derartige Vorrichtungen weisen beheizbare Formen auf, in denen in einem Arbeitsgang zwei thermoplastische Platten erhitzt und durch Vakuumformung zu einem Hohl-Formteil geformt und verschweißt werden. Nachteilig beim Twinsheet-Tiefziehverfahren ist, dass das Hohl-Formteil mit seiner Sichtoberfläche an der Formoberfläche anliegt, so dass beim Tiefziehen unvermeidbare Lufteinschlüsse sich in der Sichtoberfläche des Hohl-Formteils abbilden.Known Devices of the generic type are designed so that hollow moldings by means of a Twinsheet thermoforming process can be produced. Such devices have heatable forms in which two in one operation heated thermoplastic plates and by vacuum forming to a Molded hollow part and welded. A disadvantage of Twinsheet thermoforming is that the hollow molding with its visible surface at the mold surface is applied, so that during deep drawing unavoidable air pockets themselves in the visual surface depict the hollow molding.
Weiterhin sind Vorrichtungen der gattungsgemäßen Art bekannt, in denen zwei Formteile separat voneinander gefertigt werden und anschließend zu einem Hohl-Formteil verschweißt oder verklebt werden. Das nachträgliche Verschweißen oder Verkleben führt zu einem erhöhten Zeit- und Kostenaufwand.Farther Devices of the generic type are known in which two Moldings are manufactured separately from each other and then to welded a hollow molding or glued. The subsequent weld together or sticking leads to an increased Time and cost.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art derart weiterzubilden, dass ein Hohl-Formteil kostensparend und hohen Qualitätsanforderungen entsprechend herstellbar ist.Of these, Based on the invention, the object is based, a device of the type mentioned in such a way that a hollow molding cost-saving and high quality requirements can be produced accordingly.
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung mit den Merkmalen des Kennzeichnungsteils des Anspruches 1. Der Kern der Erfindung besteht darin, dass eine Transport-Vorrichtung mit Heiz-Mitteln vorgesehen ist, die beim zielgesteuerten Befördern des äußeren Formteils von der ersten Form-Vorrichtung zu der zweiten Form-Vorrichtung das äußere Formteil lokal beheizt und somit während des Beförderns das äußere Formteil zum Verschweißen mit dem inneren Formteil vorbereitet.These The object is achieved by a device having the features of the characterizing part of the claim 1. The essence of the invention is that a transport device is provided with heating means, the goal-directed conveying the outer molding from the first mold device to the second mold device, the outer mold part locally heated and thus during of carrying the outer molding for welding prepared with the inner molding.
Das innere Formteil wird in einem Arbeitsgang geformt und mit dem vorbereiteten äußeren Formteil verschweißt. Das Hohl-Formteil ist somit zeitsparend und kostengünstig herstellbar.The inner molding is molded in one operation and with the prepared outer molding welded. The hollow molded part is thus time-saving and inexpensive to produce.
Eine Weiterbildung nach Anspruch 2 ermöglicht, dass die Sichtoberfläche des äußeren Formteils der Oberfläche der ersten Form-Vorrichtung abgewandt ist, so dass eine hohe Qualität der Sichtoberfläche des äußeren Formteils erzielbar ist.A Development according to claim 2 allows the visible surface of the outer molding of the surface the first mold device is turned away, so that a high quality of the visible surface of the outer molding is achievable.
Eine Ausgestaltung nach Anspruch 3 ermöglicht eine Formung des inneren Formteils in einer Position, in der das innere Formteil zur Verschweißung mit dem äußeren Formteil bereit ist.A Embodiment according to claim 3 allows a shaping of the inner Molded part in a position in which the inner molding for welding with the outer molding ready.
Eine Ausführungsform nach Anspruch 4 ist kostensparend, da das Entformungs-Mittel zum Entformen des Hohl-Formteils und zum Aufpressen und Verschweißen des äußeren Formteils auf das innere Formteil einsetzbar ist.A embodiment according to claim 4 is cost-saving, since the demoulding means for Demolding of the hollow molding and for pressing and welding of the outer molding can be used on the inner molding.
Eine Weiterbildung nach Anspruch 5 ermöglicht ein einfaches und kostengünstiges lokales Beheizen des äußeren Formteils während des Beförderns.A Training according to claim 5 allows a simple and inexpensive local heating of the outer molding while of carrying.
Eine Ausführungsform nach Anspruch 6 führt zu einem kostengünstigen Beheizen der ungeformten Formteile.A embodiment according to claim 6 leads to a cost-effective Heating the unshaped moldings.
Eine Ausgestaltung nach Anspruch 7 ermöglicht den Einsatz von handelsüblichen Tiefziehmaschinen.A Embodiment according to claim 7 allows the use of commercially available Thermoforming machines.
Eine weitere Aufgabe der Erfindung ist es, ein Verfahren zur Herstellung eines Hohl-Formteils mit einer erfindungsgemäßen Vorrichtung anzugeben.A Another object of the invention is a process for the preparation a hollow molding with a device according to the invention specify.
Diese Aufgabe wird erfindungsgemäß gelöst durch ein Verfahren mit den im Anspruch 8 angegebenen Merkmalen. Die Vorteile des erfindungsgemäßen Verfahrens entsprechen denen, die oben im Zusammenhang mit der erfindungsgemäßen Vorrichtung ausgeführt wurden.These The object is achieved by a method having the features specified in claim 8. The advantages the method according to the invention correspond to those above in connection with the device according to the invention accomplished were.
Eine Weiterbildung nach Anspruch 9 stellt sicher, dass ein Wärmeeintrag in das äußere Formteil nur an den zur Verschweißung vorgesehenen Stellen erfolgt.A Development according to claim 9 ensures that a heat input in the outer molding only to the for welding provided.
Eine Ausgestaltung nach Anspruch 10 führt dazu, dass das innere Formteil noch eine zur Verschweißung mit dem äußeren Formteil erforderliche Temperatur aufweist.A Embodiment according to claim 10 results in that the inner molding still one for welding to the outer molding required temperature.
Eine Ausführungsform nach Anspruch 11 ermöglicht eine kostengünstige Herstellung der Formteile.A embodiment according to claim 11 allows a cost-effective Production of molded parts.
Eine Weiterbildung nach Anspruch 12 führt dazu, dass das Hohl-Formteil beim Entformen formstabil bleibt.A Development according to claim 12 results in that the hollow molded part remains dimensionally stable during demoulding.
Ein Entform-Schritt nach Anspruch 13 ermöglicht eine Automatisierung der Entnahme des hergestellten Hohl-Formteils. Alternativ kann diese Entnahme auch manuell erfolgen.One Demoulding step according to claim 13 enables automation the removal of the produced hollow molding. Alternatively, this removal also done manually.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung sind der nachfolgenden Beschreibung entnehmbar, in der ein bevorzugtes Ausführungsbeispiel anhand der beigefügten Zeichnungen näher erläutert wird. Diese zeigen:Further features, details and advantages of the invention will be apparent from the following description in which a preferred Ausführungsbei game is explained in detail with reference to the accompanying drawings. These show:
Eine
als Ganzes mit
Die
erste Tiefziehmaschine
Neben
der ersten Tiefziehmaschine
An
dem zweiten Maschinenrahmen
Die
Vorrichtung
Im
Folgenden wird unter Bezugnahme auf die
Die
Negativ
geformt bedeutet, dass die der Negativ-Form-Oberfläche
Die
Durch
das Erzeugen eines Unterdrucks in dem ersten Vakuum-Raum
Durch
das Positivformen des äußeren Formteils
Mit
der erfindungsgemäßen Vorrichtung
sind polymere Kühlschranktüren, Gefrierschranktüren, Abdeckungen
von Kühlboxen
und Trennwände
herstellbar, wobei das äußere Formteil
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410060965 DE102004060965A1 (en) | 2004-12-17 | 2004-12-17 | Apparatus for producing hollow moldings e.g. refrigerator doors, by separately forming outer and inner moldings, transporting locally heated outer molding to inner molding and welding by pressing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410060965 DE102004060965A1 (en) | 2004-12-17 | 2004-12-17 | Apparatus for producing hollow moldings e.g. refrigerator doors, by separately forming outer and inner moldings, transporting locally heated outer molding to inner molding and welding by pressing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004060965A1 true DE102004060965A1 (en) | 2006-06-22 |
Family
ID=36571200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410060965 Withdrawn DE102004060965A1 (en) | 2004-12-17 | 2004-12-17 | Apparatus for producing hollow moldings e.g. refrigerator doors, by separately forming outer and inner moldings, transporting locally heated outer molding to inner molding and welding by pressing |
Country Status (1)
Country | Link |
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DE (1) | DE102004060965A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008090543A1 (en) * | 2007-01-24 | 2008-07-31 | Polyraz Plastics Industries | Platter for thermoplastic billet |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3854860A (en) * | 1971-01-04 | 1974-12-17 | Kent Plastics Corp | Apparatus for forming plastic articles from sheet materials |
EP0450482A2 (en) * | 1990-03-31 | 1991-10-09 | R + S STANZTECHNIK GmbH | Apparatus with a heating station and a forming station |
US6372176B1 (en) * | 1999-03-01 | 2002-04-16 | Kiefel Technologies Inc. | System and method for twin sheet forming |
WO2004062889A1 (en) * | 2003-01-10 | 2004-07-29 | Cannon S.P.A. | Twin-sheet thermoforming of plastic fuel tanks |
WO2004069522A1 (en) * | 2003-02-05 | 2004-08-19 | G.M.P. Spa | Integrated plant for the production of articles made of reinforced polyurethane, relative method and polyurethane articles thus obtained |
-
2004
- 2004-12-17 DE DE200410060965 patent/DE102004060965A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3854860A (en) * | 1971-01-04 | 1974-12-17 | Kent Plastics Corp | Apparatus for forming plastic articles from sheet materials |
EP0450482A2 (en) * | 1990-03-31 | 1991-10-09 | R + S STANZTECHNIK GmbH | Apparatus with a heating station and a forming station |
US6372176B1 (en) * | 1999-03-01 | 2002-04-16 | Kiefel Technologies Inc. | System and method for twin sheet forming |
WO2004062889A1 (en) * | 2003-01-10 | 2004-07-29 | Cannon S.P.A. | Twin-sheet thermoforming of plastic fuel tanks |
WO2004069522A1 (en) * | 2003-02-05 | 2004-08-19 | G.M.P. Spa | Integrated plant for the production of articles made of reinforced polyurethane, relative method and polyurethane articles thus obtained |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008090543A1 (en) * | 2007-01-24 | 2008-07-31 | Polyraz Plastics Industries | Platter for thermoplastic billet |
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