EP1945871A1 - Vacuum insulator and method for its production - Google Patents

Vacuum insulator and method for its production

Info

Publication number
EP1945871A1
EP1945871A1 EP06828993A EP06828993A EP1945871A1 EP 1945871 A1 EP1945871 A1 EP 1945871A1 EP 06828993 A EP06828993 A EP 06828993A EP 06828993 A EP06828993 A EP 06828993A EP 1945871 A1 EP1945871 A1 EP 1945871A1
Authority
EP
European Patent Office
Prior art keywords
vacuum insulation
insulation body
body according
core
sealing
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.)
Withdrawn
Application number
EP06828993A
Other languages
German (de)
French (fr)
Inventor
Hans-Frieder Eberhardt
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.)
Porextherm-Dammstoffe GmbH
Porextherm Daemmstoffe GmbH
Original Assignee
Porextherm-Dammstoffe GmbH
Porextherm Daemmstoffe GmbH
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 Porextherm-Dammstoffe GmbH, Porextherm Daemmstoffe GmbH filed Critical Porextherm-Dammstoffe GmbH
Publication of EP1945871A1 publication Critical patent/EP1945871A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E04B1/803—Heat insulating elements slab-shaped with vacuum spaces included in the slab
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/242—Slab shaped vacuum insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/10—Insulation, e.g. vacuum or aerogel insulation

Definitions

  • the invention relates to a vacuum insulation body according to the preamble of claim 1 and a corresponding manufacturing method.
  • Vacuum insulation bodies are increasingly used in insulation and insulation in a variety of applications.
  • a vacuum insulation body is understood to be an insulation element which has a core or supporting body made of an open-cell, open-pore, microporous and / or fibrous material, which is enveloped by a film and then evacuated.
  • the attenuation values of such materials can be significantly improved by keeping them in an evacuated environment.
  • up to 10 times higher insulation values can be achieved so that the layer thickness of the insulation panels can be reduced by the corresponding value.
  • barrier materials are used, in particular multilayer films in which alternate metal layers, metallized layers and plastic layers.
  • vacuum insulation bodies is also critical that in the areas in which a vacuum insulation body abuts the next, so-called bridges arise, for example cold bridges, which significantly reduce the insulation values of the total insulation compared to the insulating values of a single vacuum insulation body.
  • the cause of these bridges is usually that in the conventional vacuum insulation bodies, a jointless juxtaposition of adjacent vacuum insulation body is practically impossible.
  • the core which is moved further by a transport device, takes the film web with a leading edge. Then pivots a welding jaw up, while the film roll is braked to keep the film web taut. As a result, however, considerable forces are exerted on the fragile core blank, so that it can break out just in the edge area. This not only affects the fit. Rather, broken core material can also have a negative effect on the seal, in particular if the additional nonwoven covering is to be dispensed with for cost reasons.
  • Object of the present invention is therefore to provide a vacuum insulation body available, which can be connected almost seamlessly to a similar vacuum insulation body, and is inexpensive to produce by a corresponding manufacturing process.
  • the vacuum insulation body according to the invention has a core made of a microporous material, which is surrounded on its flat top and bottom by a sheath with two sealing seams in the longitudinal direction.
  • the core is thus completely surrounded by two blank sheets of a gas-tight multilayer film.
  • a gas-tight multilayer film is understood as meaning a film in which at least two plastic layers alternate with at least one barrier layer.
  • Such a multilayer film is: polyamide / nylon - metal layer - polypropylene - polyester - metal layer - polyethylene.
  • the individual layers are interconnected, for example by lamination. The end edges of the film are thus gas-tightly sealed together after welding.
  • a vacuum insulation body is achieved in which the sealing seams or the welds closely fit tightly against the core and practically do not apply.
  • the evacuation of the envelope of the vacuum insulation body is usually carried out prior to sealing, whereby also methods are known in which a first "partial" sealing takes place, which is then completed after evacuation.
  • the vacuum insulation body according to the invention essentially has the dimensions of the core plus the thickness of the multilayer film used.
  • the seal seams are extremely flat and closely conform to the microporous core.
  • the sealing seams to the center each offset by a few centimeters against each other on the top and bottom of the vacuum insulation body.
  • the respective sealing seam offset from each other by about one third of the total width of the vacuum insulation body to the central axis. Since the staggered sealing seams are relatively flat by the above configuration, the transverse seals on the narrow side can be sealed particularly well. This also causes the transverse Sealing seams kept relatively flat, which further prevents bridging between adjacent vacuum insulation bodies. Furthermore, it is achieved by attaching the sealing seams adjacent to the core as close as possible to ensure that the excess film material can be placed in the corner region around the edges of the core, which in turn results in a compact construction.
  • FIG. 1 shows a section through a vacuum insulation body according to the invention.
  • FIG. 2 is a perspective view of FIG. 1;
  • FIG. 4 is a perspective view of a completed vacuum insulation body.
  • the vacuum insulation body 1 has a core 2 of a microporous material which is completely enveloped by a multilayer film 3.
  • the vacuum insulation body 1 of the embodiment of FIGS. 1 and 2 is a plate-shaped vacuum insulation body 1 or flat cuboid.
  • a first sealing seam 4 runs on the upper side 18 approximately in the middle region of the vacuum insulation body 1 and displaces a second sealing seam 4 'on the lower side for this purpose.
  • These two sealing seams 4 and 4 'on the two main surfaces here, the upper and lower flat sides 18 and 18' in comparison to the narrower end faces 12, 13 and 14, 17, see Fig .. 4) can also in the opposite direction of the Center offset, as shown in Fig. 2.
  • sealing seams 4 and 4 ' are formed by respectively sealing the end edges 5 and 6 of the multilayer film 3 in the area where they abut and overlap.
  • FIG. 3 shows in addition to the preparation of the two sealing seams 4 and 4 'after inserting a core 2 in a longitudinal welding device and a transverse sealing seam 15.
  • This sealing seam 15 is carried out closely to the core 2 in order to achieve the closest possible envelope.
  • the film material remaining from the covering is folded in the corner regions 10 and 11 of the vacuum insulation body 1 into a triangle which fits snugly against the core 2 or the end faces of the vacuum insulation body 1.
  • Kälte Thermal bridges are avoided.
  • FIG. 4 shows a perspective view of the finished vacuum insulation body 1.
  • the vacuum insulation body 1 offset from the central region of the upper side 18 has the sealing seam 4, which is about one third of the opposite sealing seam 4 'at the bottom 18' Overall width is offset.
  • the vacuum insulation body 1 has transverse seams 15, which are formed on the respective end faces 12 and 13 of the vacuum insulation body 1. By the offset of the longitudinal seams 4 and 4 'thus a film accumulation on the respective transverse seam 15 is advantageously avoided.
  • the excess foil or the corner regions 10 and 11 are respectively folded over to the front sides 12 and 13, but can also be folded down to the narrow sides 14 and 17.
  • This proposed method allows by format change readily adaptation of the film wrapping to strongly varying dimensions of the shaped body (width, length and height) in the automated manufacturing process, which is shown schematically in Fig. 3.
  • this can be for smaller format changes usually on a change of the film rolls (in Fig. 3 below the Welding device shown omitted), since the overlap region of the sealing seams 4 and 4 'are chosen wider, which can be carried out in a considerably shorter time, so means a time savings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

For the simple production of an exactly fitting vacuum insulator (1) comprising upper and lower flat sides and narrower end sides, wherein an open-cell, open-pore, microporous and/or fibrous core (2) is completely enclosed by a gastight multilayer film (3), the end edges (e.g. 5 and 6) of which are sealed together, it is proposed that a sealing seam (4, 4') is provided on each of the flat sides (18, 18') of the vacuum insulator (1). It is preferred for the two sealing seams (4, 4') on the upper and lower flat sides (18, 18') to be arranged off-centre, in particular arranged offset oppositely in relation to each other, each by approximately 1/3 of the overall width of the vacuum insulator (1). Moreover, a corresponding production method is proposed.

Description

Beschreibungdescription
Vakuumisolationskörper und Verfahren zu dessen HerstellungVacuum insulation body and method for its production
Die Erfindung betrifft einen Vakuumisolationskörper gemäß dem Oberbegriff des Anspruches 1 und ein entsprechendes Herstellungsverfahren.The invention relates to a vacuum insulation body according to the preamble of claim 1 and a corresponding manufacturing method.
Vakuumisolationskörper finden zunehmend Verwendung bei der Isolierung und Dämmung in den verschiedensten Anwendungsgebieten. Unter einem Vakuumisolationskörper wird ein Dämmelement verstanden, das einen Kern bzw. Stützkörper aus einem offenzelligen, offenporigen, mikroporösen und/oder faserartigen Werkstoff aufweist, der von einer Folie umhüllt und dann evakuiert wird. Die Dämmwerte derartiger Werkstoffe können signifikant verbessert werden, indem diese in einer evakuierten Umgebung gehalten wird. So können damit bis zu 10fach höhere Dämmwerte erzielt werden, so dass die Schichtdicke der Isolationsplatten dadurch um den entsprechenden Wert reduziert werden kann.Vacuum insulation bodies are increasingly used in insulation and insulation in a variety of applications. A vacuum insulation body is understood to be an insulation element which has a core or supporting body made of an open-cell, open-pore, microporous and / or fibrous material, which is enveloped by a film and then evacuated. The attenuation values of such materials can be significantly improved by keeping them in an evacuated environment. Thus, up to 10 times higher insulation values can be achieved so that the layer thickness of the insulation panels can be reduced by the corresponding value.
Als Umhüllungen für die Kerne bzw. Stützkörper werden deswegen sogenannte Barrierematerialien eingesetzt, insbesondere Mehrschichtfolien, bei denen sich Metallschichten, metallisierte Schichten und Kunststoffschichten abwechseln. Bei solchen Vakuumisolationskörpern ist weiterhin kritisch, dass in den Bereichen, in denen ein Vakuumisolationskörper an den nächsten stößt, sogenannte Brücken entstehen, beispielsweise Kältebrücken, die die Dämmwerte der Gesamtdämmung im Vergleich zu den Dämmwerten eines einzelnen Vakuumisolationskörpers erheblich herabsetzen. Ursache dieser Brücken ist in der Regel, dass bei den herkömmlichen Vakuumisolationskörpern ein fugenloses Aneinanderstoßen benachbarter Vakuumisolationskörper praktisch nicht möglich ist.As sheathings for the cores or supporting bodies so-called barrier materials are used, in particular multilayer films in which alternate metal layers, metallized layers and plastic layers. In such vacuum insulation bodies is also critical that in the areas in which a vacuum insulation body abuts the next, so-called bridges arise, for example cold bridges, which significantly reduce the insulation values of the total insulation compared to the insulating values of a single vacuum insulation body. The cause of these bridges is usually that in the conventional vacuum insulation bodies, a jointless juxtaposition of adjacent vacuum insulation body is practically impossible.
Bei den gängigen Vakuumisolationskörpem sind in der Regel zwei Folienzuschnitte als Umhüllung im schmalen Randbereich des Kerns miteinander verschweißt, da das Verschweißen der Folienzuschnitte an den schmalen Stirnseiten der Platte erfolgt. Somit entsteht umlaufend an diesen Schmalseiten eine Schweißnaht, die von den Rändern der Isolationsplatte absteht. Werden zwei derartige Vakuumisolationsplatten aneinander angelegt, so befinden sich die Schweißränder von beiden Vakuumisolationsplatten (auch als VIP bezeichnet) zwischen den beiden Kernen, wodurch ein nahezu fugenloses Aneinanderstoßen unmöglich gemacht wird. Vielmehr befindet sich anstehendes Umhüllungsmaterial zwischen den aneinanderstoßenden Vakuumisolationsplatten, wodurch die Wärme/Kälte-Brücken entstehen, die den Gesamtdämmwert der Konstruktion stark herabsetzen.In the usual Vakuumisolationskörpem two foil blanks are welded together as wrapping in the narrow edge region of the core, since the welding of the foil blanks takes place at the narrow end faces of the plate. Thus arises circumferentially on these narrow sides of a weld, which protrudes from the edges of the insulation plate. If two such vacuum insulation panels are applied to each other, then the welding edges of both Vacuum insulation plates (also referred to as VIP) between the two cores, making a virtually seamless clashing impossible. Rather, there is pending wrapping material between the abutting vacuum insulation plates, whereby the heat / cold bridges arise, greatly reducing the total insulation value of the construction.
Aus der DE 100 58 566 C2 ist bereits ein folienumhüllter, evakuierter Wärmedämmformkörper und ein Herstellungsverfahren aus einem einzigen Folienzuschnitt mit einer Siegelnaht in Längsrichtung bekannt. Hierbei wird der Kernrohling nach einer Umhüllung mit Vlies in eine Kunststofffolie eingeschlagen. Diese Folie entspricht in ihrer Breite der Summe aus der Kernbreite, Kernhöhe und der Siegelnahtbreite (jeweils zweifach). Damit ist ein Formatwechsel in den meisten Fällen mit einem Wechsel der Folienbahn für die Folienbeutel verbunden, was erhebliche Umrüstkosten verursachen kann.From DE 100 58 566 C2, a film-coated, evacuated thermal insulation molded article and a production method comprising a single film blank with a sealed seam in the longitudinal direction are already known. Here, the core blank is wrapped in a plastic film after wrapping with fleece. This film corresponds in its width to the sum of the core width, core height and the sealing seam width (in each case two times). Thus, a format change is in most cases associated with a change of the film web for the foil bag, which can cause considerable Umrüstkosten.
Der hierbei von einer Transportverrichtung weiter bewegte Kern nimmt die Folienbahn mit einer Vorderkante mit. Sodann schwenkt eine Schweißbacke nach oben, wobei gleichzeitig die Folienrolle gebremst wird, um die Folienbahn straff gespannt zu halten. Hierdurch werden jedoch erhebliche Kräfte auf den fragilen Kernrohling ausgeübt, so dass dieser gerade im Kantenbereich ausbrechen kann. Hierdurch wird nicht nur die Passform beeinträchtigt. Vielmehr kann ausgebrochenes Kernmaterial auch die Versiegelung negativ beeinflussen, insbesondere wenn aus Kostengründen auf die zusätzliche Vliesumhüllung verzichtet werden soll.The core, which is moved further by a transport device, takes the film web with a leading edge. Then pivots a welding jaw up, while the film roll is braked to keep the film web taut. As a result, however, considerable forces are exerted on the fragile core blank, so that it can break out just in the edge area. This not only affects the fit. Rather, broken core material can also have a negative effect on the seal, in particular if the additional nonwoven covering is to be dispensed with for cost reasons.
Aufgabe der vorliegenden Erfindung ist es daher, einen Vakuumisolationskörper zur Verfügung zu stellen, der sich annähernd fugenlos an einen gleichartigen Vakuumisolationskörper anschließen lässt, sowie durch ein entsprechendes Herstellungsverfahren kostengünstig zu produzieren ist.Object of the present invention is therefore to provide a vacuum insulation body available, which can be connected almost seamlessly to a similar vacuum insulation body, and is inexpensive to produce by a corresponding manufacturing process.
Diese Aufgabe wird gelöst durch einen Vakuumisolationskörper nach Anspruch 1 bzw. ein Verfahren nach Anspruch 8. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche. Der erfindungsgemäße Vakuumisolationskörper weist einen Kern aus einem mikroporösen Werkstoff auf, der an seiner flachen Ober- und Unterseite von einer Umhüllung mit zwei Siegelnähten in Längsrichtung umgeben ist. Der Kern ist somit von zwei Zuschnittbögen aus einer gasdichten Mehrschichtfolie vollständig umhüllt. Unter einer gasdichten Mehrschichtfolie wird eine Folie verstanden, bei der sich mindestens zwei Kunststoffschichten mit mindestens einer Barriereschicht abwechseln. Durch diese Anordnung wird eine besonders hohe Dichtigkeit des Materials erzielt, da sich mehrere Kunststoff- und Metallschichten einander abwechseln. Ein Beispiel einer solchen Mehrschichtfolie ist: Polyamid/Nylon - Metallschicht - Polypropylen - Polyester - Metallschicht - Polyethylen. Die einzelnen Schichten sind miteinander verbunden, beispielsweise durch Laminierung. Die Endkanten der Folie sind somit nach dem Verschweißen miteinander gasdicht versiegelt.This object is achieved by a vacuum insulation body according to claim 1 and a method according to claim 8. Advantageous embodiments are the subject of the dependent claims. The vacuum insulation body according to the invention has a core made of a microporous material, which is surrounded on its flat top and bottom by a sheath with two sealing seams in the longitudinal direction. The core is thus completely surrounded by two blank sheets of a gas-tight multilayer film. A gas-tight multilayer film is understood as meaning a film in which at least two plastic layers alternate with at least one barrier layer. By this arrangement, a particularly high density of the material is achieved because several plastic and metal layers alternate. An example of such a multilayer film is: polyamide / nylon - metal layer - polypropylene - polyester - metal layer - polyethylene. The individual layers are interconnected, for example by lamination. The end edges of the film are thus gas-tightly sealed together after welding.
Durch die Verwendung zweier Zuschnittbögen der Folie und damit zwei Längsnähten wird ein Vakuumisolationskörper erzielt, bei dem die Versiegelungsnähte bzw. die Schweißnähte eng am Kern eng anliegen und praktisch nicht auftragen. Beim Aneinanderstoßen benachbarter Vakuumisolationskörper der gleichen Art ist somit ein fugenloses Aneinanderreihen möglich. Das Evakuieren der Umhüllung des Vakuumisolationskörpers erfolgt in der Regel vor der Versiegelung, wobei auch Verfahren bekannt sind, bei denen zunächst eine "teilweise" Versiegelung erfolgt, die nach dem Evakuieren dann abgeschlossen wird. Wie ersichtlich, weist der erfindungsgemäße Vakuumisolationskörper im Wesentlichen die Abmessungen des Kerns auf plus der Dicke der eingesetzten Mehrschichtfolie. Die Versiegelungsnähte sind äußerst flach und liegen an dem mikroporösen Kern eng an.By using two blank sheets of the film and thus two longitudinal seams, a vacuum insulation body is achieved in which the sealing seams or the welds closely fit tightly against the core and practically do not apply. When juxtaposing adjacent vacuum insulation body of the same kind thus a jointless juxtaposition is possible. The evacuation of the envelope of the vacuum insulation body is usually carried out prior to sealing, whereby also methods are known in which a first "partial" sealing takes place, which is then completed after evacuation. As can be seen, the vacuum insulation body according to the invention essentially has the dimensions of the core plus the thickness of the multilayer film used. The seal seams are extremely flat and closely conform to the microporous core.
Vorzugsweise verlaufen die Versiegelungsnähte zur Mitte jeweils um einige Zentimeter gegeneinander versetzt auf der Ober- und Unterseite des Vakuumisolationskörpers. Beispielsweise ist bei einem derartigen plattenförmigen Vakuumisolationskörper die jeweilige Versiegelungsnaht etwa um ein Drittel der Gesamtbreite des Vakuumisolationskörpers zur Mittelachse gegeneinander versetzt. Da die versetzten Versiegelungsnähte durch die vorstehende Ausgestaltung relativ flach sind, können die querverlaufenden Versiegelungen an der Schmalseite besonders gut abgedichtet werden. Dadurch werden auch die querverlaufenden Versiegelungsnähte relativ flach gehalten, was die Brückenbildung zwischen benachbarten Vakuumisolationskörpern weiter verhindert. Ferner wird durch ein möglichst enges Anbringen der Versiegelungsnähte benachbart zum Kern erzielt, dass das überschüssige Folienmaterial im Eckbereich um die Ränder des Kerns gelegt werden kann, wodurch sich wiederum eine kompakte Bauweise ergibt.Preferably, the sealing seams to the center each offset by a few centimeters against each other on the top and bottom of the vacuum insulation body. For example, in such a plate-shaped vacuum insulation body, the respective sealing seam offset from each other by about one third of the total width of the vacuum insulation body to the central axis. Since the staggered sealing seams are relatively flat by the above configuration, the transverse seals on the narrow side can be sealed particularly well. This also causes the transverse Sealing seams kept relatively flat, which further prevents bridging between adjacent vacuum insulation bodies. Furthermore, it is achieved by attaching the sealing seams adjacent to the core as close as possible to ensure that the excess film material can be placed in the corner region around the edges of the core, which in turn results in a compact construction.
Nachstehend soll die Erfindung anhand der Zeichnungen näher erläutert und beschrieben werden. Es zeigen:The invention will be explained in more detail with reference to the drawings and described. Show it:
Fig. 1 einen Schnitt durch einen erfindungsgemäßen Vakuumisolationskörper;1 shows a section through a vacuum insulation body according to the invention.
Fig. 2 eine Perspektivansicht gemäß Fig. 1 ;Fig. 2 is a perspective view of FIG. 1;
Fig. 3 eine Schemaansicht des erfindungsgemäßen Herstellungsverfahrens; und3 is a schematic view of the manufacturing method of the invention; and
Fig. 4 eine perspektivische Ansicht eines fertiggestellten Vakuumisolationskörpers.4 is a perspective view of a completed vacuum insulation body.
Der erfindungsgemäße Vakuumisolationskörper 1 weist einen Kern 2 aus einem mikroporösen Werkstoff auf, der von einer Mehrschichtfolie 3 vollständig umhüllt ist. Der Vakuumisolationskörper 1 des Ausführungsbeispieles der Fig. 1 und 2 ist ein plattenförmiger Vakuumisolationskörper 1 bzw. Flachquader. Wie insbesondere aus Fig. 1 ersichtlich, verläuft an der Oberseite 18 etwa im mittleren Bereich des Vakuumisolationskörpers 1 eine erste Versiegelungsnaht 4 und versetzt dazu an der Unterseite eine zweite Versiegelungsnaht 4'. Diese beiden Versiegelungsnähte 4 und 4' an den beiden Hauptflächen (hier die obere und untere Flachseiten 18 und 18' im Vergleich zu den schmäleren Stirnseiten 12, 13 bzw. 14, 17, vgl. Fig. 4) können auch in entgegengesetzter Richtung von der Mitte versetzt sein, wie dies in Fig. 2 dargestellt ist.The vacuum insulation body 1 according to the invention has a core 2 of a microporous material which is completely enveloped by a multilayer film 3. The vacuum insulation body 1 of the embodiment of FIGS. 1 and 2 is a plate-shaped vacuum insulation body 1 or flat cuboid. As can be seen in particular from FIG. 1, a first sealing seam 4 runs on the upper side 18 approximately in the middle region of the vacuum insulation body 1 and displaces a second sealing seam 4 'on the lower side for this purpose. These two sealing seams 4 and 4 'on the two main surfaces (here, the upper and lower flat sides 18 and 18' in comparison to the narrower end faces 12, 13 and 14, 17, see Fig .. 4) can also in the opposite direction of the Center offset, as shown in Fig. 2.
Diese Versiegelungsnähte 4 und 4' entstehen, indem die Endkanten 5 und 6 der Mehrschichtfolie 3, in dem Bereich, in dem sie aneinanderstoßen und überlappen, jeweils miteinander versiegelt sind. Dabei kann die außenliegende Fläche der Endkante 5 mit der innenliegenden Fläche der Endkante 6 zusammenstoßen (sog. A-B-Versiegelung). Dadurch ergibt sich eine besonders flache Versiegelungsnaht 4. Jedoch kann auch eine A-A-Versiegelung angewendet werden, wie die für die Versiegelungsnaht 4' an der Unterseite 18' dargestellt ist, ebenso in Fig. 2, da mit dieser Versiegelungsart zwei Schichten der Folie 3 in der Regel problemlos miteinander versiegelbar sind.These sealing seams 4 and 4 'are formed by respectively sealing the end edges 5 and 6 of the multilayer film 3 in the area where they abut and overlap. In this case, the outer surface of the end edge 5 with the inner surface of the end edge 6 collide (so-called. AB seal). This results in a particularly flat sealing seam 4. However, it is also possible to use an AA seal, as shown for the sealing seam 4 'on the underside 18', likewise in FIG. 2, since with this type of sealing two layers of the film 3 can generally be sealed to one another without difficulty.
Die schematische Ansicht der Fig. 3 zeigt neben der Herstellung der beiden Versiegelungsnähte 4 und 4' nach Einschieben eines Kerns 2 in eine Längsschweißvorrichtung auch eine querverlaufende Versiegelungsnaht 15. Wie ersichtlich erfolgt die Versiegelung der Quemaht 15 zwischen Schweißbacken, indem die beiden Innenseiten der Folie miteinander versiegelt werden. Diese Versiegelungsnaht 15 wird eng am Kern 2 durchgeführt, um eine möglichst eng anliegende Umhüllung zu erzielen. Wie aus Fig. 4 weiter ersichtlich, ist das aus der Umhüllung verbleibende Folienmaterial in den Eckbereichen 10 und 11 des Vakuumisolationskörpers 1 , zu einem Dreieck gefaltet, das sich eng an den Kern 2 bzw. die Stirnseiten des Vakuumisolationskörpers 1 anlegt. Hierdurch können Kältebzw. Wärmebrücken vermieden werden.The schematic view of Fig. 3 shows in addition to the preparation of the two sealing seams 4 and 4 'after inserting a core 2 in a longitudinal welding device and a transverse sealing seam 15. As can be seen, the sealing of the Quemaht 15 between welding jaws, by the two inner sides of the film together to be sealed. This sealing seam 15 is carried out closely to the core 2 in order to achieve the closest possible envelope. As can also be seen from FIG. 4, the film material remaining from the covering is folded in the corner regions 10 and 11 of the vacuum insulation body 1 into a triangle which fits snugly against the core 2 or the end faces of the vacuum insulation body 1. As a result, Kältebzw. Thermal bridges are avoided.
Fig. 4 zeigt schließlich eine Perspektivansicht auf den fertiggestellten Vakuumisolationskörper 1. Hieraus ist ersichtlich, dass der Vakuumisolationskörper 1 versetzt zum mittleren Bereich der Oberseite 18 die Versiegelungsnaht 4 aufweist, die gegenüber der entsprechenden Versiegelungsnaht 4' an der Unterseite 18' um etwa ein Drittel der Gesamtbreite versetzt ist. Weiterhin weist der Vakuumisolationskörper 1 Quernähte 15 auf, die an den jeweiligen Stirnseiten 12 und 13 des Vakuumisolationskörpers 1 ausgebildet sind. Durch den Versatz der Längsnähte 4 und 4' wird somit eine Folienhäufung an der jeweiligen Quernaht 15 in vorteilhafter weise vermieden. Die Überschussfolie bzw. die Eckbereiche 10 und 11 sind jeweils zu den Stirnseiten 12 und 13 umgefaltet, können aber auch zu den Schmalseiten 14 und 17 hin umgeklappt werden.Finally, FIG. 4 shows a perspective view of the finished vacuum insulation body 1. It can be seen that the vacuum insulation body 1 offset from the central region of the upper side 18 has the sealing seam 4, which is about one third of the opposite sealing seam 4 'at the bottom 18' Overall width is offset. Furthermore, the vacuum insulation body 1 has transverse seams 15, which are formed on the respective end faces 12 and 13 of the vacuum insulation body 1. By the offset of the longitudinal seams 4 and 4 'thus a film accumulation on the respective transverse seam 15 is advantageously avoided. The excess foil or the corner regions 10 and 11 are respectively folded over to the front sides 12 and 13, but can also be folded down to the narrow sides 14 and 17.
Dieses vorgeschlagene Verfahren ermöglicht durch Formatumstellung ohne weiteres eine Anpassung der Folienumhüllung an stark schwankende Abmessungen der Formkörper (Breite, Länge und Höhe) bei dem automatisierten Fertigungsverfahren, das schematisch in Fig. 3 dargestellt ist. Insbesondere kann dadurch bei kleineren Formatänderungen meist auf einen Wechsel der Folienrollen (in Fig. 3 unterhalb der Schweißvorrichtung dargestellt) verzichtet werden, da der Überlappungsbereich der Versiegelungsnähte 4 und 4' breiter gewählt werden, was in erheblich kürzerer Zeit durchgeführt werden kann, also eine Zeiteinsparung bedeutet.This proposed method allows by format change readily adaptation of the film wrapping to strongly varying dimensions of the shaped body (width, length and height) in the automated manufacturing process, which is shown schematically in Fig. 3. In particular, this can be for smaller format changes usually on a change of the film rolls (in Fig. 3 below the Welding device shown omitted), since the overlap region of the sealing seams 4 and 4 'are chosen wider, which can be carried out in a considerably shorter time, so means a time savings.
Zusammenfassend ergeben sich folgende Vorteile der erfindungsgemäßen Lösung:In summary, the following advantages of the solution according to the invention result:
Flexibilität bei der VIP-Herstellung (viele unterschiedliche Formate); es können flächengrößere VIPs hergestellt werden als mit einem Folienbogen; die eng anliegende Folie ermöglicht nahezu wärmebrückenfreies Stoßen verschiedener VIPs aneinander; passgenauere VIPs können hergestellt werden, da der Folienauftrag minimal bleibt; automatisierte Fertigung ermöglicht wirtschaftliche Vorteile für den Hersteller und letztendlich für den Kunden; eine automatische Kaschierungs- oder Einschäumungsanlage kann direkt an dieFlexibility in VIP production (many different formats); It can be made larger area VIPs than with a foil sheet; the close-fitting foil allows virtually no thermal bridging of different VIPs to each other; more accurate VIPs can be produced, as the film order remains minimal; automated manufacturing allows economic benefits for the manufacturer and ultimately for the customer; an automatic laminating or foaming system can be connected directly to the
Vorrichtung gemäß Fig. 3 angeschlossen werden; dadurch kann das VlP sofort nach der Produktion entsprechend gegen mechanische Beschädigungen geschützt werden. Device are connected in accordance with Figure 3; As a result, the VlP can be protected against mechanical damage immediately after production.

Claims

Patentansprüche claims
1. Vakuumisolationskörper mit einer oberen und unteren Flachseite und schmäleren Stirnseiten, wobei ein offenzelliger, offenporiger, mikroporöser und/oder faserartiger Kern (2) von einer gasdichten Mehrschichtfolie vollständig umhüllt ist, deren Endkanten miteinander versiegelt sind, dadurch gekennzeichnet, dass an den Flachseiten (18, 18') des Vakuumisolationskörpers (1) je eine Versiegelungsnaht (4, 4') vorgesehen ist.1. Vacuum insulation body having an upper and lower flat side and narrower end faces, wherein an open-cell, open-pored, microporous and / or fibrous core (2) is completely enveloped by a gas-tight multilayer film whose end edges are sealed together, characterized in that on the flat sides ( 18, 18 ') of the vacuum insulation body (1) each have a sealing seam (4, 4') is provided.
2. Vakuumisolationskörper nach Anspruch 1 , dadurch gekennzeichnet, dass die jeweilige Versiegelungsnaht (4, 4') an der oberen und unteren Flachseite (18, 18') außermittig angeordnet sind, insbesondere die beiden Versiegelungsnähte (4, 4' um etwa je 1/3 der Gesamtbreite des Vakuumisolationskörpers (1) entgegengesetzt versetzt verlaufend ausgerichtet sind.2. Vacuum insulation body according to claim 1, characterized in that the respective sealing seam (4, 4 ') on the upper and lower flat side (18, 18') are arranged off-center, in particular the two sealing seams (4, 4 'by about 1 / 3 of the total width of the vacuum insulation body (1) are oppositely aligned aligned.
3. Vakuumisolationskörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass nach dem Versiegeln überstehende Folienbereiche (10, 11) zu den schmäleren Stirnseiten (12, 13 oder 14, 17) umgeklappt sind.3. Vacuum insulation body according to claim 1 or 2, characterized in that after sealing projecting film areas (10, 11) to the narrower end faces (12, 13 or 14, 17) are folded.
4. Vakuumisolationskörper nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Mehrschichtfolie (3) zumindest eine zwei Kunststoffschichten und eine Barriereschicht aus Metal, metallisiertem Kunststoff, metallischen Oxiden, wie SiOx oder AI2Ox oder Ormoceren® aufweist.4. Vacuum insulation body according to one of the preceding claims, characterized in that the multilayer film (3) has at least one two plastic layers and a barrier layer of metal, metallized plastic, metallic oxides such as SiO x or Al 2 O x or Ormoceren®.
5. Vakuumisolationskörper nach Anspruch 4, dadurch gekennzeichnet, dass die Mehrschichtfolie (3) aus einer Abfolge an Schichten aus Kunststoffen und Barrierematerialien besteht. 5. Vacuum insulation body according to claim 4, characterized in that the multilayer film (3) consists of a sequence of layers of plastics and barrier materials.
6. Vakuumisolationskörper nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Kern (2) quaderförmig ausgebildet ist.6. Vacuum insulation body according to one of claims 1 to 5, characterized in that the core (2) is cuboidal.
7. Vakuumisolationskörper nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Kern (2) aus verpresstem mikroporösen Material wie gefällte Kieselsäure, pyrogene Kieselsäure und/oder Aerogelen, offenzelligem Polystyrolschaum, offenzelligem Polyisocyanuratschaum, Fasermaterialien oder Kombinationen derartiger Materialien untereinander oder mit separaten Stützgerüsten wie z.B. Wabenstrukturen besteht.7. Vacuum insulation body according to one of claims 1 to 6, characterized in that the core (2) of compressed microporous material such as precipitated silica, fumed silica and / or aerogels, open-cell polystyrene foam, open-cell polyisocyanurate, fiber materials or combinations of such materials with each other or with separate Scaffolds such as Honeycomb structures exists.
8. Verfahren zur Herstellung eines Vakuumisolationskörpers nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die zwei Versiegelungsnähte (4, 4') nach Einschieben des Kerns (2) in Transportrichtung verschweißt werden, insbesondere zeitgleich an der oberen und unteren Flachseite (18, 18'). 8. A method for producing a vacuum insulation body according to one of claims 1 to 7, characterized in that the two sealing seams (4, 4 ') after insertion of the core (2) are welded in the transport direction, in particular at the same time at the upper and lower flat side (18th , 18 ').
EP06828993A 2005-11-10 2006-11-10 Vacuum insulator and method for its production Withdrawn EP1945871A1 (en)

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DE102005054012A DE102005054012A1 (en) 2005-11-10 2005-11-10 Vacuum insulation body and method for its production
PCT/EP2006/010771 WO2007054322A1 (en) 2005-11-10 2006-11-10 Vacuum insulator and method for its production

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007030689C5 (en) * 2007-06-30 2015-03-19 Porextherm-Dämmstoffe Gmbh Vacuum insulation panel and method for its production
DE202007014564U1 (en) * 2007-10-16 2008-11-27 Porextherm-Dämmstoffe Gmbh Enclosed vacuum insulation panel
CN108843895B (en) * 2018-08-03 2021-02-12 滁州银兴新材料科技有限公司 Back edge-sealed vacuum insulation panel
JP2020122631A (en) * 2019-01-31 2020-08-13 東芝ライフスタイル株式会社 Refrigerator and vacuum heat insulation panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20012547U1 (en) * 2000-03-30 2001-04-05 Kerspe, Jobst H., Dr.-Ing., 69245 Bammental Vacuum insulation panel
WO2001066864A1 (en) 2000-03-10 2001-09-13 Zz Wancor Insulation element and the use thereof, and method of producing a preferred embodiment of said insulation element
DE10015876A1 (en) * 2000-03-30 2001-10-11 Jobst H Kerspe Vacuum insulation panel for lining refrigerating units, cold storage rooms and similar items comprises cover foils which are welded to one another so that the panel contact edges are at least largely free from protrusions

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058566C2 (en) * 2000-08-03 2002-10-31 Va Q Tec Ag Foil-wrapped, evacuated thermal insulation body and manufacturing process for it
EP1308570A3 (en) * 2001-11-05 2007-07-18 The Vac Company GmbH Vacuum joining for containers or structures produced under vacuum
DE20216474U1 (en) * 2002-09-26 2003-04-17 Hasenkamp Internationale Transporte GmbH, 51149 Köln Case for transporting valuable, highly sensitive objects, in particular, framed or otherwise form-stabilized paintings is internally lined with vacuum insulation panels
DE20215397U1 (en) * 2002-10-07 2003-01-02 Porextherm-Dämmstoffe GmbH, 87437 Kempten Thermal insulation element under vacuum, covered with a sheet of multilayered foil, comprises a seam in which the outer surface of one foil edge seals the inner surface of the other
DE10248854A1 (en) * 2002-10-18 2004-04-29 Porextherm-Dämmstoffe Gmbh Vacuum insulation element with an evacuatable core and a foil cover which at least within the zone of sealing seams is provided with an inorganic-organic hybrid polymer layer
DE10305550A1 (en) * 2003-02-10 2004-08-19 Va-Q-Tec Ag Vacuum insulation panel for insulating purposes comprises a core material and a sleeve formed as a tube or as a bag with folds and/or lies around the core material
DE202004015843U1 (en) * 2004-10-13 2005-03-24 Va Q Tec Ag Vacuum insulation panel comprises a core enveloped by a gastight foil blanks of unequal size, with welding taking place roughly in the plane of the smaller foil blank
DE202006008477U1 (en) * 2006-05-29 2006-08-31 The Vac Company Gmbh Vacuum insulating panel for insulating e.g. refrigerators comprises a plate-like evacuated support body and a two-part gas-tight foil sleeve sealed using heat sealing seals both formed on the outer and inner side

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001066864A1 (en) 2000-03-10 2001-09-13 Zz Wancor Insulation element and the use thereof, and method of producing a preferred embodiment of said insulation element
DE20012547U1 (en) * 2000-03-30 2001-04-05 Kerspe, Jobst H., Dr.-Ing., 69245 Bammental Vacuum insulation panel
DE10015876A1 (en) * 2000-03-30 2001-10-11 Jobst H Kerspe Vacuum insulation panel for lining refrigerating units, cold storage rooms and similar items comprises cover foils which are welded to one another so that the panel contact edges are at least largely free from protrusions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007054322A1 *

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