DE10240606A1 - Composite particle foam product manufacture involves shrinkage of a heated plastic film onto a molded particulate foam product - Google Patents
Composite particle foam product manufacture involves shrinkage of a heated plastic film onto a molded particulate foam product Download PDFInfo
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- DE10240606A1 DE10240606A1 DE10240606A DE10240606A DE10240606A1 DE 10240606 A1 DE10240606 A1 DE 10240606A1 DE 10240606 A DE10240606 A DE 10240606A DE 10240606 A DE10240606 A DE 10240606A DE 10240606 A1 DE10240606 A1 DE 10240606A1
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- foam
- film
- foam product
- top layer
- cover layer
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Classifications
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- 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
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/40—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using sheet or web-like material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
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- 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
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
- B29C2035/046—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames dried air
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- 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
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- 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
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/48—Preparation of the surfaces
- B29C2063/483—Preparation of the surfaces by applying a liquid
- B29C2063/485—Preparation of the surfaces by applying a liquid the liquid being an adhesive
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- 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
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- 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
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- 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
-
- 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
- B29C51/14—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 using multilayered preforms or sheets
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- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
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- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as 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
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
- B29K2105/048—Expandable particles, beads or granules
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- 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
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- 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
- B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
- B29L2031/5272—Surf boards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
- B32B2439/62—Boxes, cartons, cases
Abstract
Description
Die Erfindung betrifft einen Werkstoffverbund bestehend aus einem Schaumstoffkern und einer diesen teilweise oder vollständig umschließenden weiteren Deckschicht, vorzugsweise einer PE-Folie, TPO-Folie, einer PET-Folien oder einer Verbundfolie aus thermoplastischen Materialien sowie ein Verfahren zur Herstellung dieses Werkstoffverbundes und Produkten.The invention relates to a composite material of a foam core and another partially or completely enclosing it Cover layer, preferably a PE film, TPO film, a PET film or a composite film made of thermoplastic materials as well a process for the production of this composite material and products.
Formteile aus thermoplastischen Schaumstoffen
und insbesondere Partikelschaustoffen finden vielfältige Verwendung.
Die Eigenschaften der Formteile aus Partikelschaumstoffen werden
in der Regel durch ihre konstruktive Auslegung, Materialdichte oder
durch die Herstellung von Werkstoffverbunden gezielt beeinflusst.
Zur Verbesserung der mechanischen Eigenschaften werden die Formteile
mit fasererverstärkten
Kunstoffen verpresst. Für
optische Ansprüche
werden sie beschichtet und damit dem Formteil, je nach Anwendung
eine glatte, dekorative oder abriebfeste Oberfläche zu verleihen. Der Deckwerkstoff
kann zu diesem Zweck beispielsweise auch aus einer Verbundfolie
oder einem Textil bestehen. Eine weitere Möglichkeit zur Verbesserung
der Oberflächeneigenschaften
von Schaumstoffformteilen ist der Einsatz von Werkzeugen mit speziellen
Werkzeugeinsätzen
wie in
Bauteile aus unverstärkten Partikelschaumstoffen
wie Ladungsträger
oder Surf-, Wellen-, oder Schwimmbretter haben häufig unzureichende mechanische
Eigenschaften bei Zugbelastungen oder Biegebelastungen und damit
verbundenen Zugspannungen im Bauteil. Problematisch ist auch der
Abrieb oder das Ausbrechen von Schaumstoffpartikel aus der Formteiloberfläche. Einseitig
beschichtete oder verstärkte
Formteiloberflächen
bewirken zwar eine Verbesserung der Oberflächeneigenschaften der Formteile,
haben jedoch nur bedingten Einfluss auf die Biegefestigkeit der
Bauteile. Bei einseitig beschichteten Formteilen können nur
in eine Biegerichtung Zugspannungen durch die Beschichtung aufgenommen
werden. Werkstoffverbunde mit Verstärkungsfasern wie in
Der Erfindung liegt daher die Aufgabe zugrunde, in einem wirtschaftlichen Prozess gewichtsreduzierte, kostengünstige Bauteilen aus Partikelschaum oder Partikelschaumverbunden mit verbesserten mechanischen Eigenschaften und/oder verbesserten optischen Eigenschaften bereitzustellen.The invention is therefore the object reduced weight in an economic process, inexpensive Particles made of particle foam or particle foam combined with improved mechanical properties and / or improved optical properties provide.
Dies wird dadurch gelöst, dass Formteile aus Schaumstoff mit zumindest einer Deckschichtschicht ganz oder teilweise umschlossen und form- und/oder stoffschlüssig verbunden werden. Die Herstellung dieser Verbundbauteile wird durch Kombination von Formteilen aus Partikelschaumstoff in Verbindung mit zumindest einer Deckschicht in Form von Schrumpffolien oder Schrumpfschläuchen erreicht, die über Wärmeintrag auf das Schaumteil aufgeschrumpft werden.This is solved by the fact that Molded parts made of foam with at least one top layer layer entirely or partially enclosed and positively and / or cohesively connected become. The manufacture of these composite components is by combination of molded parts made of particle foam in conjunction with at least a top layer in the form of shrink films or shrink sleeves, the about heat input be shrunk onto the foam part.
Als Partikelschaumstoff wird vorzugsweise EPP (expandierter Polypropylenpartikelschaum), EPS (expandierter Polystyrolpartikelschaum) oder EPE (expandierter Polyethylenpartikelschaum) eingesetzt. Die Deckschichten bestehen vorzugsweise aus TPO-Folien, PET-Folien oder Verbundfolien. Vorzugsweise werden für die Deckschichten Materialien eingesetzt die neben der formschlüssige Verbindung mit dem Schaumkern auch eine stoffschlüssige Anbindung erlauben. Eine Variante ist der Einsatz von verstreckten Polyethylen-Folien oder Folien aus einem Polyethylen (PE)-Polyethylenterephthalat (PET)-Verbund. Eine weitere Variante ist das Einbringen einer zusätzlichen Verstärkungsschicht als Zwischenlage zwischen Schaum und Deckschicht in Form eines Gewebes.EPP is preferred as the particle foam (expanded polypropylene particle foam), EPS (expanded polystyrene particle foam) or EPE (expanded polyethylene particle foam) is used. The Cover layers preferably consist of TPO films, PET films or composite films. Preferably be for The cover layers are used in addition to the positive connection with materials allow the foam core also a material connection. A Variant is the use of stretched polyethylene films or Films made from a polyethylene (PE) -polyethylene terephthalate (PET) composite. Another A variant is the introduction of an additional reinforcement layer as an intermediate layer between foam and top layer in the form of a fabric.
Die Ausführung der Deckschicht kann als Schrumpffolie oder Schrumpfschläuche erfolgen. Eine Variante ist hier der Einsatz tiefgezogener bzw. vorgeformter Folien um eine verbesserte Anpassung an die Kontur des Schaumstoffteiles zu erreichen. Eine weitere Variante ist die Vorverformung des Schrumpfschlauches um ebenfalls eine formschlüssige Anpassung zu erleichtern und Faltenbildung zu vermeiden.The execution of the top layer can as shrink wrap or shrink tubing. A variant is the use of deep-drawn or preformed foils by one to achieve improved adaptation to the contour of the foam part. A Another variant is the pre-deformation of the shrink tube also a positive one Facilitate adjustment and prevent wrinkles.
Die Verbindung der Deckschichten mit dem Schaum erfolgt im Anschluss an die eigentliche Herstellung des Schaumformteiles. Eine Variante zur Verbindung des Schaumteiles mit einer schlauchförmigen Deckschicht ist das Anlegen eine Vakuums zur Gewährleistung des vollständigen Formschlusses und Maximierung der Kontaktflächen. Eine weitere Variante ist hier die Zuhilfenahme eines formgebenden oder der Schaumteilkontur entsprechenden Werkzeuges zur Anpassung der Deckschicht an das Schaumteil.The connection of the top layers with the foam takes place after the actual production of the molded foam part. A variant for connecting the foam part with a tubular Covering is the creation of a vacuum to ensure complete positive locking and Maximizing the contact areas. Another variant is the use of a form-giving or the foam part contour corresponding tool for adaptation the top layer to the foam part.
Die Wärmezufuhr zur Aufschrumpfung der Deckschicht und gegebenenfalls Aktivierung eines Haftvermittlers erfolgt in einem Ofen, über Infrarot-Strahlung, hochfrequente Strahlung, Heißluft, oder über Kontakt mit anderen temperierbaren Medien wie Flüssigkeiten, z.B. Wasser, Öle oder Feststoffe, z.B. Stahl. Eine Variante ist der Einsatz einer Einrichtung zum kontinuierlichen Erwärmen wie z.B. ein Durchlaufofen in Verbindung mit Vorrichtungen zur Wärmezufuhr wie oben beschrieben. Eine weitere Variante ist auch das Einbringen der Deckschicht in das Formteilwerkzeug, welches zur Formgebung und Herstellung des Schaumteils im Formteilautomaten eingesetzt wird. Die Deckschicht kann so passgenau auf das Schaumteil aufgebracht werden; beim Einsatz von Schrumpfschläuchen wird das Schaum-Formteil in dieser Variante mit dem Schlauch umschlossen und in das Formteilwerkzeug eingebracht. Die erforderliche Wärmezufuhr über das Formteilwerkzeug und damit an die Deckschicht kann über Heißdampf, ähnlich wie bei der Verschweißung der Schaumpartikel zu einem Schaumteil erfolgen.The heat supply for shrinking the top layer and, if necessary, activation of an adhesion promoter takes place in an oven, over Infrared radiation, high-frequency radiation, hot air, or via contact with other temperable media such as liquids, e.g. Water, oils or Solids, e.g. Steel. A variant is the use of a facility for continuous heating such as. a continuous furnace in connection with devices for the supply of heat as described above. Another variant is the insertion the top layer into the molding tool, which is used for shaping and manufacture of the foam part used in the molding machine becomes. The cover layer can be applied precisely to the foam part become; when using shrink sleeves, the foam molding becomes in this variant enclosed with the hose and inserted into the molding tool. The required heat supply via the molding tool and thus to the top layer can be superheated, similar to the welding of the Foam particles are made into a foam part.
Wesentlicher Vorteil des Verfahrens ist die Erhöhung der Festigkeit der so hergestellten Bauteile bei minimaler Gewichtszunahme durch die Deckschicht. Die bei einer Biegebelastung der Schaumstoffbauteile resultierenden Zugspannungen sind an der Bauteiloberfläche maximal, da hier der maximale Abstand zur Spannungs-Nulllinie gegeben ist. Durch eine komplette Umhüllung des Schaumstoffes mit einer Deckschicht kann diese die auftretenden Zugspannungen aufnehmen. Sind Biegerichtung und die Belastungswerte bekannt ist eine teilweise Umschließung des Schaumstoffkerns zur Entlastung der kritischen oberflächennahen Bereich ausreichend. Im Idealfall wir so die Biegelinie an die Bauteiloberfläche verschoben. Weiterer Vorteil ist, dass über die Deckschichtstärke und/oder den Grad der Verstreckung der Deckschichtmaterialien die Schrumpfung der Deckschicht während des Beschichtungsvorganges beeinflusst werden kann und damit der Schaumkern zusätzlich an der Oberfläche komprimiert werden kann. Eine eventuellen Dehnung der Beschichtungsfolien bei Biege- und damit verbundener Zugbelastungen bewirkt somit zunächst nur eine Dekomprimierung der äußeren Schaumschicht, und eine Schädigung der Schaumpartikel, bzw. der Verbindungen wie sie bei Zugbelastungen auftritt wird vermieden. Ferner ist aufgrund des maximalen Formschlusses eine Ablösung der Deckschichten nahezu ausgeschlossen.Significant advantage of the procedure is the increase the strength of the components manufactured in this way with minimal weight gain through the top layer. The at a bending load of the foam components resulting tensile stresses are maximum on the component surface, since here the maximum distance to the voltage zero line is given. Through a complete wrapping of the foam with a cover layer, this can be the occurring Record tensile stresses. Are the bending direction and the load values a partial enclosure of the foam core is known for Relief of critical surface areas Area sufficient. Ideally, the bending line should be moved to the component surface. Another advantage is that over the top layer thickness and / or the degree of stretching of the top layer materials Shrinkage of the top layer during the coating process can be influenced and thus the Additional foam core on the surface can be compressed. A possible stretching of the coating films in the case of bending and associated tensile loads, therefore initially only causes decompression of the outer foam layer, and injury the foam particles, or the connections as they are under tensile loads occurrence is avoided. Furthermore, due to the maximum form fit a replacement of the cover layers almost impossible.
Claims (21)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE10240606A DE10240606A1 (en) | 2002-08-17 | 2002-08-17 | Composite particle foam product manufacture involves shrinkage of a heated plastic film onto a molded particulate foam product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10240606A DE10240606A1 (en) | 2002-08-17 | 2002-08-17 | Composite particle foam product manufacture involves shrinkage of a heated plastic film onto a molded particulate foam product |
Publications (1)
Publication Number | Publication Date |
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DE10240606A1 true DE10240606A1 (en) | 2004-02-26 |
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DE10240606A Withdrawn DE10240606A1 (en) | 2002-08-17 | 2002-08-17 | Composite particle foam product manufacture involves shrinkage of a heated plastic film onto a molded particulate foam product |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2660032A1 (en) * | 2012-05-02 | 2013-11-06 | Basf Se | Method for producing the compound body comprising a particulate foam mould with a strong connection to a hollow body |
EP3862258A1 (en) * | 2020-02-07 | 2021-08-11 | THE GUN SAILS v. Osterhausen GmbH | Composite material, method for producing the composite material and device comprising such a composite material |
-
2002
- 2002-08-17 DE DE10240606A patent/DE10240606A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2660032A1 (en) * | 2012-05-02 | 2013-11-06 | Basf Se | Method for producing the compound body comprising a particulate foam mould with a strong connection to a hollow body |
WO2013164252A1 (en) * | 2012-05-02 | 2013-11-07 | Basf Se | Method for producing a composite body comprising a particle foam molded part connected to a hollow body in a force-closed manner |
CN104271325A (en) * | 2012-05-02 | 2015-01-07 | 巴斯夫欧洲公司 | Method for producing a composite body comprising a particle foam molded part connected to a hollow body in a force-closed manner |
US9545739B2 (en) | 2012-05-02 | 2017-01-17 | Basf Se | Method for producing a composite body comprising a particle foam molded part connected to a hollow body in a force-closed manner |
CN104271325B (en) * | 2012-05-02 | 2017-03-08 | 巴斯夫欧洲公司 | Method for the complex containing the particle foam mechanograph being connected in the way of force-closed to ducted body for the preparation |
EP3862258A1 (en) * | 2020-02-07 | 2021-08-11 | THE GUN SAILS v. Osterhausen GmbH | Composite material, method for producing the composite material and device comprising such a composite material |
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