DE2556016A1 - Light permeable and light scattering plastics laminate board - for building purposes, uses bonding medium consisting of acrylate dissolved in methylene chloride - Google Patents
Light permeable and light scattering plastics laminate board - for building purposes, uses bonding medium consisting of acrylate dissolved in methylene chlorideInfo
- Publication number
- DE2556016A1 DE2556016A1 DE19752556016 DE2556016A DE2556016A1 DE 2556016 A1 DE2556016 A1 DE 2556016A1 DE 19752556016 DE19752556016 DE 19752556016 DE 2556016 A DE2556016 A DE 2556016A DE 2556016 A1 DE2556016 A1 DE 2556016A1
- Authority
- DE
- Germany
- Prior art keywords
- synthetic resin
- resin
- methylene chloride
- light
- cover plates
- 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.)
- Granted
Links
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 title claims abstract description 21
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 title abstract 2
- 239000004033 plastic Substances 0.000 title abstract 2
- 229920003023 plastic Polymers 0.000 title abstract 2
- 238000000149 argon plasma sintering Methods 0.000 title description 3
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 19
- 239000000057 synthetic resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011230 binding agent Substances 0.000 claims abstract description 3
- 239000008187 granular material Substances 0.000 claims abstract description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920006223 adhesive resin Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 239000004848 polyfunctional curative Chemical group 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- 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
- B32B27/08—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 synthetic resin
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/54—Slab-like translucent elements
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/418—Refractive
-
- 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
- B32B2419/00—Buildings or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
Description
Verfahren zur Herstellung einer lichtdurchlässigen und licht streuendenProcess for producing a translucent and light-scattering
Kunstharzplatt e in Sandwichbauweise Zusatz zu Patent . (Patentanmeldung P 25 11 895. 0) Die Erfindung betrifft ein Verfahren zur Herstellung einer lichtdurchlässigen und lichtstreuenden Kunstharzplatte in Sandwichbauseise, wie sie in vers chie denen Anwendungen Verwendung findet, insbesondere für Außenwand-und Trennwände, für Türen, für überdachungen usw.Synthetic resin panel in sandwich construction Addition to patent. (Patent application P 25 11 895. 0) The invention relates to a method for producing a translucent and light-diffusing synthetic resin panels in sandwich construction, as they are in various types Applications is used, in particular for exterior wall and partition walls, for doors, for canopies etc.
Lichtdurchlässige Kunsthar zplatten werden in verschiedenen Ausführungen als Einschichtplatte oder als Sandwichplatte mit Wabenkern oder Stegeinlage verwendet. Hierbei wird auf gute Lichtdurchlässigkeit und einen günstigen Lichtstreueffekt Wert gelegt. Ein Verfahren zur Herstellung einer solchen Kunstharzplatte ist im DBP 1 646 226 beschrieben, bei denen bei der Herstellung einer glasfas erver stärkten Polyesterplatte durch eine geknitterte Trennfolie ein besonderer Lichtstreueffekt erzeugt wird.Translucent synthetic resin sheets are available in different designs used as a single-layer panel or as a sandwich panel with a honeycomb core or web insert. This is based on good light transmission and a favorable light scattering effect Added value. A method for producing such a synthetic resin plate is in DBP 1 646 226 described in which he reinforced in the manufacture of a fiberglass A wrinkled separating film creates a special light diffusion effect on the polyester plate is produced.
Eine erhöhte Festigkeit ist mit einer Stegdoppelplatte aus Acryl und Polyvenylchlorid erzielt worden, bei der die Stege in Fertigungsrichtung der Platte angeordnet sind, wobei jedoch eine gute Biegefestigkeit nur in Richtung der Stege erreicht wird.An increased strength is with a double-walled sheet made of acrylic and Polyvinyl chloride has been achieved in which the webs in the production direction of the plate are arranged, but good flexural strength only in the direction of the webs is achieved.
Die Herstellung von Polyester-Sandwichplatten ist wegen der sehr hohen Anforderungen an die Aufrechterhaltung gleichmäßiger Temperaturverhältnisse außerordentlich schwierig und stark abhängig von der manuellen Geschicklichkeit. Die Folge dieser Schwierigkeiten sind häufig ungleiche Dicke der Deckplatten sowie unterschiedlich tief in das Glas-Harz- Laminat einsinkende Zwischenlagen. Ein besonderes Problem bei der Verwendung von Polyesterharz- Werkstoffen besteht außerdem darin, daß nach dem heutigen Stand der Technik ein absolut vergilbungsfreies Polyesterharz nicht bekannt ist.The production of polyester sandwich panels is because of the very high The demands on maintaining uniform temperature conditions are extraordinary difficult and heavily dependent on manual dexterity. The consequence of this Difficulties are often unequal thickness of the cover plates as well as different Intermediate layers sinking deep into the glass-resin laminate. A particular problem when using polyester resin materials is also that after With today's state of the art, an absolutely non-yellowing polyester resin is known.
Mit der Erfindung nach dem Hauptpatent ist ein Verfahren zur Herstellung einer verbesserten lichtdurchlässigen und licht streuenden Kunstharzplatte in Sandwichbauweise vorgeschlagen worden, bei dem Kunstharzdeckplatten mit zumindest einseitig glatter Oberfläche, insbesondere aus Polymethylmethacrylat oder Mischpolymerisat auf Acrylnitrilbasis verwendet und paarweise mittels eines Bindeharzes, welches bei der Aushärtung ohne Einfluß auf die Transparenz der Deckplatten bleibt, mit ihrer glatten Oberfläche mit einem Wabenkörper oder einer Stegeinlage verbunden werden.With the invention according to the main patent is a method of manufacture an improved translucent and light-diffusing synthetic resin panel in sandwich construction been proposed in the synthetic resin cover plates with at least one side smoother Surface, in particular made of polymethyl methacrylate or mixed polymer based on acrylonitrile used and in pairs by means of a binding resin, which when cured without Influence on the transparency of the cover plates remains with their smooth surface be connected with a honeycomb body or a bridge insert.
Der besondere Vorteil dieses verbesserten Verfahrens besteht darin, daß maschinell vorgefertigte transparente Kunstharzplatten als Deckplatten verwendet werden können und ein gezielter Lichteinfall sowie eine außerordentlich hohe Biegefestigkeit in allen Richtungen der Plattenebene erzielt werden.The particular advantage of this improved process is that that machine prefabricated transparent synthetic resin plates used as cover plates can be and a targeted incidence of light as well as an extremely high flexural strength can be achieved in all directions of the plane of the plate.
Trotz dieser Vorteile hat sich in der Praxis herausgestellt, daß die Verklebung der Kernlage mit den Kunstharzdeckplatten, beispielsweise mittels eines Bindeharze s aus unges ättigtem Polye sterharz auf Orthophtalsäureb asis nach dem Aushärten des Bindeharzes eine gewisse Feuchtigkeitsempfindlichkeit zeigt. Wird nämlich beim Einsatz dieser Kunstharzplatten, beispielsweise als Türfüllung, die Abdichtung zum Türrahmen mangelhaft ausgeführt, sodaß Feuchtigkeit in die Randzone der Platte eindringen kann, so werden die Bindeharzbereiche allmählich milchig-weiß, wodurch die Transparenz der Verbundplatte an diesen Stellen beeinträchtigt ist.Despite these advantages, it has been found in practice that the Gluing the core layer to the synthetic resin cover panels, for example by means of a Binding resins made from unsaturated polyester resin based on orthophthalic acid after exhibits some moisture sensitivity as the binder resin cures. Will namely when using these synthetic resin panels, for example as a door panel, the Sealing to the door frame inadequate, so that moisture in the edge zone penetration of the plate, the binding resin areas gradually become milky-white, whereby the transparency of the composite panel is impaired at these points.
Als Ursache für diesen Nachteil wurde der Einfluß herausgefunden, den der Luftsauerstoff auf die Aushärtung des Polyesterharzes ausübt, indem Styrol- und Härterreste durch den Sauerstoff zutritt in der äußersten Harzschicht nicht restlos einpolymerisiert werden.The cause of this disadvantage was found to be the influence which the atmospheric oxygen exerts on the hardening of the polyester resin by adding styrene and hardener residues through the oxygen ingress in the outermost resin layer are not are completely polymerized.
Durch das erfindungsgemäße Verfahren wird dieser Mangel beseitigt, indem gemäß der Erfindung als Bindeharz eine flüssige Klebemasse verwendet wird, die aus einer Lösung von Acrylgranulat oder zerkleinerten Acrylabfällen in Methylenchlorid besteht.This deficiency is eliminated by the method according to the invention, in that, according to the invention, a liquid adhesive is used as the binding resin, those from a solution of acrylic granulate or crushed acrylic waste in methylene chloride consists.
Die gemäß dem erfindungsgemäßen Verfahren zu verwendende flüssige Klebemasse kann vom Hersteller der als Deckplatten verwendeten Kunstharzplatten auf einfache Weise selbst hergestellt werden. Das Aufbringen des bereitgestellten Acryl-Klebeharzes auf die Innenseitt r Deckplatten erfolgt zweckmäßigerweise in einem Zuge, damit die zu verklebende Kernlage unmittelbar darauf vollständig aufgelegt werden kann, ehe die Verdunstungskälte des Methylenchlorids auf der Klebharzoberfläche eine kristalline Weißfärbung verursachen kann. Bei der Verklebung der ersten Deckschichtplatte mit der Kernmittellage wird zur besseren Entlüftung des Methylenchlorids am besten eine perforierte oder geriefte Beilage, z. B. eine Hartfaserplatte, auf die Mittellage gelegt. Dadurch kann die Verklebung der zweiten Deckplatte bereits nach kurzer Zeit durchgeführt werden. Es hat sich weiterhin als empfehlenswert herausgestellt, die fertig verklebte Kunstharzplatte längere Zeit waagrecht und auf vollständig ebener Lagerfläche zu lagern, da bei der zweiten Deckplatten-Verklebung das Entweichen des Methylenchlorids langsamer vor sich geht.The liquid to be used according to the method according to the invention Adhesive mass can be obtained from the manufacturer of the synthetic resin panels used as cover panels can be easily produced by yourself. Applying the provided Acrylic adhesive resin on the inside of the cover plates is expediently carried out in one move, so that the core layer to be bonded is placed directly on top of it can be before the evaporation cold of the methylene chloride on the adhesive resin surface can cause crystalline whitening. When gluing the first facing panel with the core middle layer is best for better ventilation of the methylene chloride a perforated or grooved insert, e.g. B. a hardboard on the middle layer placed. As a result, the second cover plate can be glued after a short time be performed. It has also proven to be recommended that Fully glued synthetic resin panel horizontally for a long time and on a completely flat surface The storage area should be stored, since the second cover plate gluing will result in the escape of Methylene chloride is slower.
Die Verwendung der erfindungsgemäß vorgeschlagenen flüssigen Klebemasse bietet somit die Vorteile, daß sie aus zerkleinerten Schneidabfällen der Deckplatten selbst kostengünstig hergestellt werden kann, nicht feuergefährlich ist und gegenüber Zwei- Komponenten- Acrylklebern, die mit Deroxyden gehärtet werden, vergilbungsfrei bleibt. Ein weiterer Vorteil ist, daß mittels des erfindungsgemäßen Verfahrens eine homogene Verbindung mit der Acryl-Declatte erzielt wird.The use of the liquid adhesive proposed according to the invention thus offers the advantage that it consists of shredded cutting waste from the cover plates itself can be produced inexpensively, is not flammable and opposite Two-component acrylic adhesives that are hardened with deroxides, non-yellowing remain. Another advantage is that by means of the method according to the invention homogeneous connection with the acrylic declatte is achieved.
Eine besonders günstige Weiterbildung des erfindungsgemäßen Verfahrens besteht darin, das Auflegen der Kunstharzdeckplatten auf den Wabenkörper bzw. auf die Stegeinlage unter Krafteinwirkung durchzuführen, derart, daß der Wabenkörper bzw. die Stegeinlage in die Deckplatte um einen bestimmten Betrag eingedrückt wird. Dies verbessert den Verbund zwischen den beiden Deckplatten und somit die Festigkeit' der Verbundplatte ganz beträchtlich. Verwendet man beispielsweise einen Wabenkörper oder eine Stegeinlage aus Aluminium, so ergibt sich bei der fertigen Sandwich- Kunstharzplatte nicht nur eine hervorragende Biegesteifigkeit, sondern auch eine erstaunliche Schlagfestigkeit. Bei einem Schlagversuch mit einem Hammer bricht nämlich in dem betreffenden Bereich die vom Schlag getroffene Deckplatte kreisförmig ein, wobei die Wabenstege stark deformiert werden, sich die Knautschzone jedoch so auswirkt, daß die rückseitige Deckplatte unbeschädigt bleibt.A particularly favorable development of the method according to the invention consists in placing the synthetic resin cover plates on the honeycomb body or on carry out the web insert under the action of force, in such a way that the honeycomb body or the saddle is pressed into the cover plate by a certain amount. This improves the bond between the two cover plates and thus the strength ' the composite panel quite considerably. For example, if a honeycomb body is used or a web insert made of aluminum, this results in the finished sandwich synthetic resin panel not only excellent flexural strength, but also amazing impact resistance. In the event of an impact test with a hammer, the area concerned breaks the cover plate hit by the blow in a circular shape, whereby the honeycomb webs are strong are deformed, but the crumple zone has such an effect that the rear Cover plate remains undamaged.
Die gemäß dem erfindungsgemäßen Verfahren verwendete flüssige Klebemasse eignet sich auch zum gleichzeitigen Auftragen auf die Innenflächen der Kunstharzdeckplatten, sodaß mit Hilfe entsprechender Lager- und Zuführeinrichtungen eine kontinuierliche Erzeugung der Verbundplatten möglich ist. Unabhängig davon, ob die Herstellung der Verbundplatte im manuellen Verfahren oder durch automatisierte Einrichtungen erfolgt, ist dank dem erfindungsgemäßen Verfahren infolge der Unempfindlichkeit der Klebezonen gegen Feuchtigkeit eine nachträgliche Beeinträchtigung der Transparenz der Verbundplatte ausgeschlossen.The liquid adhesive used in accordance with the process of the invention is also suitable for simultaneous application to the inner surfaces of the synthetic resin cover panels, so that with the help of appropriate storage and supply facilities a continuous Production of composite panels is possible. Regardless of whether the manufacture of the Composite panel is done manually or by automated equipment, is thanks to the method according to the invention as a result of the insensitivity of the adhesive zones against moisture, a subsequent impairment of the transparency of the composite panel locked out.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2556016A DE2556016C3 (en) | 1975-12-12 | 1975-12-12 | Process for the production of a translucent and light-diffusing synthetic resin panel in sandwich construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2556016A DE2556016C3 (en) | 1975-12-12 | 1975-12-12 | Process for the production of a translucent and light-diffusing synthetic resin panel in sandwich construction |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2556016A1 true DE2556016A1 (en) | 1977-06-16 |
| DE2556016B2 DE2556016B2 (en) | 1978-01-12 |
| DE2556016C3 DE2556016C3 (en) | 1978-09-28 |
Family
ID=5964218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2556016A Expired DE2556016C3 (en) | 1975-12-12 | 1975-12-12 | Process for the production of a translucent and light-diffusing synthetic resin panel in sandwich construction |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2556016C3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4877474A (en) * | 1985-07-26 | 1989-10-31 | Rohm Gmbh Chemische Fabrik | Process for the production of a hollow chamber plate of synthetic material |
| EP0506648A1 (en) * | 1991-03-26 | 1992-09-30 | Ernestine Ch. Dr. Wittner | Process for the production of masses to be shaped or pressed |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9404844U1 (en) * | 1994-03-22 | 1995-07-27 | Degussa-Hüls AG, 60311 Frankfurt | Fully recyclable composite body, especially for the production of furniture panels |
-
1975
- 1975-12-12 DE DE2556016A patent/DE2556016C3/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4877474A (en) * | 1985-07-26 | 1989-10-31 | Rohm Gmbh Chemische Fabrik | Process for the production of a hollow chamber plate of synthetic material |
| EP0506648A1 (en) * | 1991-03-26 | 1992-09-30 | Ernestine Ch. Dr. Wittner | Process for the production of masses to be shaped or pressed |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2556016B2 (en) | 1978-01-12 |
| DE2556016C3 (en) | 1978-09-28 |
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