NL8801468A - Composite insulation sheets e.g. for steel roofs - with mineral e.g. rockwool, polyurethane foam and covering e.g. of bituminised or plastic coated glass fabric layers - Google Patents
Composite insulation sheets e.g. for steel roofs - with mineral e.g. rockwool, polyurethane foam and covering e.g. of bituminised or plastic coated glass fabric layers Download PDFInfo
- Publication number
- NL8801468A NL8801468A NL8801468A NL8801468A NL8801468A NL 8801468 A NL8801468 A NL 8801468A NL 8801468 A NL8801468 A NL 8801468A NL 8801468 A NL8801468 A NL 8801468A NL 8801468 A NL8801468 A NL 8801468A
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- layer
- polyurethane foam
- thickness
- material according
- mineral
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Classifications
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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
- B32B5/18—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
- B32B5/20—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 foamed in situ
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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
- B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
- B32B19/04—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material
- B32B19/047—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material of foam
-
- 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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- 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
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/042—Bituminous or tarry substance
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/048—Natural or synthetic rubber
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/108—Rockwool fibres
-
- 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
- B32B2266/0278—Polyurethane
-
- 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
- B32B2307/70—Other properties
- B32B2307/72—Density
-
- 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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/08—Dimensions, e.g. volume
- B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
- B32B2309/105—Thickness
-
- 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
- B32B2419/06—Roofs, roof membranes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Samengesteld plaatvormig materiaal alsmede de toepassing daarvan als isolatiemateriaal in bouwwerken.Composite plate-shaped material and its use as insulation material in construction works.
De uitvinding heeft betrekking op een samengesteld plaatvormig materiaal, dat geschikt is om te worden toegepast als (constructief) isolatiemateriaal in bouwwerken.The invention relates to a composite plate-shaped material which is suitable for use as (structural) insulation material in construction works.
De laatste jaren bestaat er een toenemende vraag naar isolatiematerialen die onbrandbaar zijn of teri minste eer. verminderde brandbaarheid bezitten in vergelijking met de bekende materialen. Vooral bij isolatie van stalen daken is de behoefte aan dergelijke materialen groot.In recent years there has been an increasing demand for insulating materials that are incombustible or at least honor. have reduced flammability compared to known materials. The need for such materials is particularly high when insulating steel roofs.
Tot dusver is vaak gewerkt met het brandgevaarlijke polystyreen, waarop een laag bitumen is aangebracht. Om dit brandgevaar te onderdrukken, wordt in plaats van polystyreen ook wel gebruik gemaakt van minerale wol, d.w.z. steenwol of glaswol. Bij toepassing van dergelijke materialen treden echter andere nadelen op, zoals de slechte beloopbaarheid, de lage sterkte tegen windbelasting en een ongewenst hoog gewicht. Ook laten de isolerende eigenschappen van deze dakisolatiematerialen vaak te wensen over.Heretofore, the fire-hazardous polystyrene, on which a layer of bitumen has been applied, has often been used. Mineral wool, i.e. rock wool or glass wool, is also used instead of polystyrene to suppress this fire hazard. However, other disadvantages arise when such materials are used, such as poor walking quality, low strength against wind load and an undesirably high weight. The insulating properties of these roof insulation materials often leave much to be desired.
Gevonden werd nu, dat de bovengenoemde nadelen dankzij het samengestelde plaatvormige materiaal volgens de uitvinding kunnen worden opgeheven .It has now been found that the above drawbacks can be overcome thanks to the composite plate-shaped material according to the invention.
De uitvinding heeft betrekking op een samengesteld plaatvormig materiaal omvattende a) een laag mineraalmateriaal, b) een laag polyure-thaanschuimstof en c) een cacheerlaag.The invention relates to a composite plate material comprising a) a layer of mineral material, b) a layer of polyurethane foam and c) a coating layer.
Het verdient de voorkeur dat in het materiaal volgens de uitvinding laag a) een dikte van 10-50 mm, laag b) een dikte van 20-120 mm en laag c) een dikte van 0,1-3 mm bezit.It is preferred that in the material according to the invention layer a) has a thickness of 10-50 mm, layer b) has a thickness of 20-120 mm and layer c) has a thickness of 0.1-3 mm.
De dichtheid van laag a) is bij voorkeur 100-300 kg/m^, bijvoorbeeld ongeveer 220 kg/m^, en die van laag b) 20-40 kg/m^, bijvoorbeeld ongeveer 30 kg/m^.The density of layer a) is preferably 100-300 kg / m2, for example about 220 kg / m2, and that of layer b) 20-40 kg / m2, for example about 30 kg / m2.
Laag a) bestaat bij voorkeur uit steenwol en laag c) uit met glasvlies versterkt flexibel materiaal zoals gebitumineerd of met kunststof bekleed glasvlies.Layer a) preferably consists of rock wool and layer c) of glass fiber reinforced flexible material such as bituminized or plastic coated glass fiber.
Het samengestelde materiaal volgens de uitvinding biedt de volgende voordelen. Een brandwerendheid van meer dan 30 minuten volgens het TNO-rapport B-88-005.The composite material according to the invention offers the following advantages. A fire resistance of more than 30 minutes according to the TNO report B-88-005.
Een laag eigen gewicht.Low weight.
Het gewicht per m^ plaat is aanzienlijk lager dan van vergelijkbare materialen, die voor dezelfde doeleinden worden toegepast. Dit betekent ook dat de platen gemakkelijk verwerkt kunnen worden en de transportkosten lager zijn.The weight per sheet is considerably lower than that of comparable materials used for the same purposes. This also means that the plates can be easily processed and the transport costs are lower.
Zo weegt het materialen volgens de uitvinding, met een laag minerale wol van 20 mm en een laag polyurethaanschuim van 40 mm, per m^ 6,2 kg.For example, the materials according to the invention, with a layer of mineral wool of 20 mm and a layer of polyurethane foam of 40 mm, weigh per m 2 6.2 kg.
Minerale wol met een dikte, die dezelfde isolatie oplevert, weegt 14,4 kg per m^.Mineral wool with a thickness, which provides the same insulation, weighs 14.4 kg per m2.
Een hoog isolerend vermogen.High insulating capacity.
De isolerende eigenschappen van het produkt volgens de uitvinding zijn beter dan die van vergelijkbare materialen.The insulating properties of the product according to the invention are better than those of comparable materials.
Hierdoor kan de opstandhoogte van het dak lager blijven.This allows the curb height of the roof to remain lower.
Een grote drukvastheid.High compressive strength.
De drukvastheid van het produkt volgens de uitvinding is beter dan die van vergelijkbare materialen. Zo is de beloopbaarheid van het ‘ produkt volgens de uitvinding uitstekend, hetgeen het risico van doortrappen van bevestigingsmaterialen (parkers) uitsluit. Ten opzichte van minerale wol, heeft het produkt volgens de uitvinding een hogere weerstand tegen indrukken.The compressive strength of the product according to the invention is better than that of comparable materials. For example, the walkability of the product according to the invention is excellent, which excludes the risk of piercing fasteners (parkers). Compared to mineral wool, the product according to the invention has a higher resistance to impressions.
Een hoge delaminatiesterkte.High delamination strength.
De delaminatiesterkte van het produkt volgens de uitvinding is uitstekend. Cachering, polyurethaanschuim en minerale wol vormen een goed geheel. Bij toepassing als dakisolatie vindt geen afwaaien plaats. Ten opzichte van minerale wol, heeft het produkt volgens de uitvinding een zesmaal hogere delaminatiesterkte.The delamination strength of the product according to the invention is excellent. Coating, polyurethane foam and mineral wool form a good whole. When applied as roof insulation, no blow-off takes place. Compared to mineral wool, the product according to the invention has a six times higher delamination strength.
Universeel toepasbaar.Universally applicable.
Het produkt is universeel toepasbaar, d.w.z. dat zowel voor brand-als plaksysteem dezelfde plaat gebruikt kan worden.The product is universally applicable, i.e. the same plate can be used for both fire and adhesive systems.
Gemakkelijk te verwerken.Easy to process.
Verder kan het materiaal volgens de uitvinding gemakkelijk worden verzaagd, het bobbelt niet en bij het natworden van de toplaag kan het bij toepassing van warmte gemakkelijk worden gedroogd en in de vorm van platen gemakkelijk in handzame pakketten worden verpakt. Volgens een voorkeursuitvoeringsvorm bevat het plaatvormige materiaal volgens de uitvinding een laag steenwol met een dikte van ongeveer 20 mm met daarop aangebracht een laag polyurethaanschuimstof van ongeveer 30, 40 of 55 mm en als cacheerlaag gebitumineerd glasvlies met een dikte van ongeveer 0,5 mm.Furthermore, the material according to the invention can be easily sawn, it does not bulge and when the top layer becomes wet, it can be easily dried when heat is applied and easily packed in handy packages in the form of plates. According to a preferred embodiment, the plate-shaped material according to the invention comprises a layer of rock wool with a thickness of about 20 mm with a layer of polyurethane foam of about 30, 40 or 55 mm and a bitumen laminated glass fleece with a thickness of about 0.5 mm applied thereon.
De uitvinding heeft tevens betrekking op een werkwijze voor het vervaardigen van het hierboven beschreven samengestelde plaatvormige materiaal. De werkwijze volgens de uitvinding wordt gekenmerkt, doordat men de volgende stappen uitvoert: 1) op een laag mineraal materiaal a) wordt door middel van een gietkop een vloeibaar reactiemengsel aangebracht, waaruit een polyurethaan-schuimstof b) wordt gevormd, 2) tijdens of na het opschuimen van de laag b) wordt een cacheerlaag c) aangebracht, 3) het samengestelde materiaal laat men afkoelen en de polyurethaan-schuimstof laat men uitharden en 4) het afgekoelde samengestelde materiaal wordt tot de gewenste afmetingen verkleind.The invention also relates to a method for manufacturing the above-described composite plate material. The process according to the invention is characterized in that the following steps are carried out: 1) a liquid reaction mixture is applied to a layer of mineral material a), from which a polyurethane foam b) is formed, 2) during or after foaming the layer b) a coating layer c) is applied, 3) the composite material is allowed to cool and the polyurethane foam is allowed to cure and 4) the cooled composite material is reduced to the desired dimensions.
Voorts heeft de uitvinding betrekking op de toepassing van het hierboven beschreven materiaal resp. het materiaal vervaardigd volgens de werkwijze van de uitvinding als isolatiemateriaal in bouwwerken, in het bijzonder als dakbedekkingsmateriaal.The invention furthermore relates to the use of the above-described material resp. the material manufactured according to the method of the invention as an insulating material in construction works, in particular as a roofing material.
De werkwijze volgens de uitvinding wordt toegelicht aan de hand van de tekening volgens de bijgaande figuur. Volgens de daarin beschreven uitvoeringsvorm wordt gebruik gemaakt van een zogenaamde dubbelband-machine. In de tekening is de werkwijze volgens de uitvinding verdeeld in acht zones. Deze zones worden hieronder toegelicht.The method according to the invention is elucidated with reference to the drawing according to the accompanying figure. According to the embodiment described therein, use is made of a so-called double belt machine. In the drawing, the method according to the invention is divided into eight zones. These zones are explained below.
]. Platen van minerale wol worden vanaf een stapel op een roller-baan gebracht; 2. via de rollerbaan worden de platen naar de gietzone geleid; 3. op de platen van minerale wol wordt met behulp van een bewegende gietkop dwars op de richting waarin de platen bewegen een vloeibaar reactiemengsel aangebracht, waaruit polyurethaanschuimstof wordt gevormd; 4. in deze zone wordt het polyurethaanreactiemengsel opgeschuimd; 5. vanaf een rol aan de bovenzijde wordt de cacheerlaag aangebracht op de opschuimende polyurethaanschuimstof. De papierrol dient voor een zij-cachering tijdens de produktie; 6. de samengestelde plaat wordt afgekoeld en uitgehard; 7. de eindloze samengestelde plaat, bestaande uit de afzonderlijke platen minerale wol en continue lagen polyurethaanschuimstof en cacheerlaag, worden in stukken gezaagd met afmetingen van bijvoorbeeld 60x120 cm; 8. het gerede produkt wordt gestapeld en verpakt.]. Mineral wool slabs are placed on a roller track from a stack; 2. the plates are led to the casting zone via the roller conveyor; 3. a liquid reaction mixture is applied to the mineral wool plates by means of a moving pouring head transverse to the direction in which the plates move, from which polyurethane foam is formed; 4. the polyurethane reaction mixture is foamed in this zone; 5. From a roller on the top, the coating layer is applied to the foaming polyurethane foam. The paper roll is used for side-wrapping during production; 6. the composite sheet is cooled and cured; 7. the endless composite sheet, consisting of the separate sheets of mineral wool and continuous layers of polyurethane foam and laminate layer, are cut into pieces with dimensions of, for example, 60x120 cm; 8. the finished product is stacked and packed.
Het zal duidelijk zijn dat de hiervoor gegeven uitvoeringsvorm van het materiaal en de werkwijze volgens de uitvinding modificaties kunnen ondergaan, die voor deskundigen op het desbetreffende gebied voor de hand liggend zijn. Deze modificaties vallen binnen het kader van de onderhavige uitvinding.It will be clear that the above-mentioned embodiment of the material and the method according to the invention can undergo modifications which are obvious to those skilled in the art. These modifications are within the scope of the present invention.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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NL8801468A NL8801468A (en) | 1988-06-07 | 1988-06-07 | Composite insulation sheets e.g. for steel roofs - with mineral e.g. rockwool, polyurethane foam and covering e.g. of bituminised or plastic coated glass fabric layers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8801468 | 1988-06-07 | ||
NL8801468A NL8801468A (en) | 1988-06-07 | 1988-06-07 | Composite insulation sheets e.g. for steel roofs - with mineral e.g. rockwool, polyurethane foam and covering e.g. of bituminised or plastic coated glass fabric layers |
Publications (1)
Publication Number | Publication Date |
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NL8801468A true NL8801468A (en) | 1990-01-02 |
Family
ID=19852428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8801468A NL8801468A (en) | 1988-06-07 | 1988-06-07 | Composite insulation sheets e.g. for steel roofs - with mineral e.g. rockwool, polyurethane foam and covering e.g. of bituminised or plastic coated glass fabric layers |
Country Status (1)
Country | Link |
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NL (1) | NL8801468A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1026746C2 (en) | 2004-07-30 | 2006-02-06 | Opstalan B V | Carrier layer composed of plate-shaped insulating material, method for manufacturing thereof, as well as a wall, facade and roof construction. |
GB2544618A (en) * | 2015-11-10 | 2017-05-24 | Wido-Profil-Spólka Z Organiczona | Insulating sandwich panel |
CN110393487A (en) * | 2019-08-27 | 2019-11-01 | 北京万博汇佳科贸有限公司 | A kind of sponge implement |
-
1988
- 1988-06-07 NL NL8801468A patent/NL8801468A/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1026746C2 (en) | 2004-07-30 | 2006-02-06 | Opstalan B V | Carrier layer composed of plate-shaped insulating material, method for manufacturing thereof, as well as a wall, facade and roof construction. |
GB2544618A (en) * | 2015-11-10 | 2017-05-24 | Wido-Profil-Spólka Z Organiczona | Insulating sandwich panel |
GB2544618B (en) * | 2015-11-10 | 2022-04-06 | Wido Profil Spolka Z Organiczona | Insulating sandwich panel |
CN110393487A (en) * | 2019-08-27 | 2019-11-01 | 北京万博汇佳科贸有限公司 | A kind of sponge implement |
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