CA1264279A - Three-layer laminated panel comprising a foam core having facing sheets or layers bonded thereto with adhesive as well as a method for the production of such a panel - Google Patents
Three-layer laminated panel comprising a foam core having facing sheets or layers bonded thereto with adhesive as well as a method for the production of such a panelInfo
- Publication number
- CA1264279A CA1264279A CA000520928A CA520928A CA1264279A CA 1264279 A CA1264279 A CA 1264279A CA 000520928 A CA000520928 A CA 000520928A CA 520928 A CA520928 A CA 520928A CA 1264279 A CA1264279 A CA 1264279A
- Authority
- CA
- Canada
- Prior art keywords
- contact adhesive
- polyurethane foam
- panel
- foam sheet
- layer laminated
- 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.)
- Expired - Fee Related
Links
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
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- 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
- E04C2/02—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
- E04C2/292—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 composed of insulating material and sheet metal
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/08—Closed cell 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- 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
- B32B2607/00—Walls, panels
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249976—Voids specified as closed
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249982—With component specified as adhesive or bonding agent
- Y10T428/249985—Composition of adhesive or bonding component specified
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249987—With nonvoid component of specified composition
- Y10T428/24999—Inorganic
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Polyurethanes Or Polyureas (AREA)
- Housing For Livestock And Birds (AREA)
Abstract
A three-layer laminated panel comprising a polyurethane foam sheet having outer sheets bonded thereto with adhesive as well as a method for the production of such a panel.
ABSTRACT
A three-layer laminated panel comprising a mainly closed-cell structured polyurethane foam sheet of a density of at least 40 kg/m and having two metal sheets, at least one of which being a metal sheet which is glass enamelled on both sides, bonded thereto with polychloroprene rubber-based contact ad-hesive is produced by applying the contact adhesive to two opposite sides of the polyurethane foam sheet, drying the contact adhesive, then placing the two metal sheets both be-ing coated on one side with contact adhesive and subsequently dried, on each side of the contact adhesive coated polyureth-ane foam sheet with the contact adhesive layers facing the contact adhesive layers of the polyurethane foam sheet to form a three-layer laminated panel, then placing said panel in a suitable press under a pressure of at least 5 kg/cm2, and thereafter, if necessary, cooling the three-layer laminated panel under pressure.
The three-layer laminated panel thus produced is dimension stable and weatherproof.
The only Figure is to be published with the Abstract.
ABSTRACT
A three-layer laminated panel comprising a mainly closed-cell structured polyurethane foam sheet of a density of at least 40 kg/m and having two metal sheets, at least one of which being a metal sheet which is glass enamelled on both sides, bonded thereto with polychloroprene rubber-based contact ad-hesive is produced by applying the contact adhesive to two opposite sides of the polyurethane foam sheet, drying the contact adhesive, then placing the two metal sheets both be-ing coated on one side with contact adhesive and subsequently dried, on each side of the contact adhesive coated polyureth-ane foam sheet with the contact adhesive layers facing the contact adhesive layers of the polyurethane foam sheet to form a three-layer laminated panel, then placing said panel in a suitable press under a pressure of at least 5 kg/cm2, and thereafter, if necessary, cooling the three-layer laminated panel under pressure.
The three-layer laminated panel thus produced is dimension stable and weatherproof.
The only Figure is to be published with the Abstract.
Description
A three-layer laminated panel comprising a plane polyurethane foam sheet having outer facing sheets of metal bonded thereto with adhesive as well as a method for the production of such a panel.
5 The invention relates to a three-layer laminated panel com-prising a plane polyurethane foam sheet of mainly closed cell structure and having facing sheets of metal bonded thereto with a polychloroprene rubber-based contact adhesive as well as a method for the production thereof.
10 Multilayer laminated panels comprising a core plate of foam, to both sides of which sheets or boards, such as chipboards, plasterboards, plywood sheets or asbestos cement boards, are bonded with adhesive, to both sides of which sheets or boards glass or porcelain enamelled metal sheets in turn are adhe-15 sive-bonded as facing sheets or layers, are known and exten-sively used within the building and industrial sector. The glass enamelled metal sheets are enamelled on both sides.
These known multilayer laminated panels are produced thereby that on both sides of the foam core a sheet or board, e.g.
20 a chipboard, a plasterboard, a plywood sheet or an asbestos cement board, is bonded with adhesive, whereupon, in turn, on both sides of the laminated panel thus produced a glass enamelled metal sheet, preferably a glass enamelled steel plate, is bonded with adhesive.
25 Several attempts have been made to bond glass or porcelain enamelled steel plates with adhesive direct to each side of a foam sheet, as this would simplify and reduce the price of the production of multilayer panels. However, the results obtained have been unsatisfactory, as the panels thus pro-30 duced were not straight, the glass enamelled metal sheet wasmore or less loosened, the panels delaminated when subjected to impact, and the cell walls broke down when the glass en-amelled metal sheet expanded or shrunk when subjected to heat and cold, respectively.
. ~
~26427~3 It is known from U.S. Patent Specification No. 3,535,198 that polyurethane foam sheets having facing layers bonded thereto with a polychloroprene rubber-based (neoprene) con-tact adhesive and being mounted on the exterior of a building 5 delaminate as a result of the action of the temperature, cfr.
column 1, line 71 to column 2, line 4.
It has surprisingly been found that when using a mainly closed-cell structured polyurethane foam of a density of at least 40 kg/m3 and a polychloroprene rubber-based contact 10 adhesive as the adhesive, three-layer laminated panels having facing sheets or layers of glass enamelled metal can be pro-duced in a simple way. These three-layer laminated panels are weatherproof and dimension stable, even when exposed to the weather for a long time.
15 Accordingly, the three-layer laminated panel of the inven-tion is characterized by the polyurethane foam sheet having a density of at least 40 kgtm3, and by at least one of the facing sheets or layers being a metal sheet which is glass enamelled on both sides.
20 As mentioned above, either one of or both of the metal sheets may be glass enamelled. It is preferred to use glass or por-celain enamelled steel plates. When one of the metal sheets is not glass enamelled, it is e.g. made of galvanized steel, copper or aluminum.
25 In a preferred embodiment of the three-layer laminated panel of the invention the polyurethane foam has a density of 50-120 kg/m3. When the three-layer laminated panel of the invention is used as e.g. facade cladding the polyurethane foam may contain fire retardants, if desired.
30 The method of the invention is characterized by applying a polychloroprene rubber-based contact adhesive to two oppo-site sides of a polyurethane foam sheet of a density of at least 40 kg/m3 and of mainly closed cell structure, drying 126~79 the contact adhesive, if necessary, at a temperature above room temperature, placing the two metal sheets both being coated on one side with polychloroprene rubber-based contact adhesive and subsequently dried, if necessary at a tempera-5 ture above room temperature, and at least one of said twometal sheets being glass enamelled on both sides, on each side of the polyurethane foam sheet coated with contact ad-hesive with the contact adhesive layers facing the contact adhesive layers of the polyurethane foam sheet to form a 10 three-layer laminated panel, then placing said panel in a suitable press under a pressure of at least 5 kg/cm2, and thereafter, if necessary, cooling the three-layer laminated panel under pressure.
A particularly preferred embodiment of the method of the inven-15 tion consists in applying the polychloroprene rubber-based contact adhesive in an amount of about 160 g/m2 on one side of the polyurethane foam sheet (1) having a density of 50-120 kg/m3, drying the contact adhesive at a temperature of about 60C., treating the opposite side of the poly-20 urethane foam sheet (1) in the same way, and cooling thepolyurethane foam sheet to about 20-25C., thereafter placing two glass enamelled metal sheets (2,3), coated on one side with polychloroprene rubber-based contact adhesive in an amount of 120 g/m2, dried at a temperature of about 90C.
25 and cooled to about 30-40C., on each side of the contact adhesive coated polyurethane foam sheet with the contact ad-hesive layers facing the contact adhesive layers of the poly-urethane foam sheet to form a three-layer laminated panel, then placing said panel in a press under a pressure of 30 6 kg/cm2, and thereafter cooling the three-layer laminated panel under pressure for about 24 hours.
For the pressing of the three-layer laminated panel under a pressure of at least 5 kg/cm2 any suitable press can be used. A rolling press with rubber rollers of a suitable hard-35 ness can e.g. be used. However, it is also possible to makethe pressing in a permanent press.
iZ6~279 The solids contents of the polychloroprene rubber-based con-tact adhesive may vary. Usually a contact adhesive based on "NEOPREN" of a solids contents of about 21 per cent is used.
By varying the density of the used polyurethane foam within 5 the limits stated above and by varying the thickness of the polyurethane foam core three-layer laminated panels of dif-ferent properties and thicknesses can be prepared. Typically, the glass enamelled steel plate has a thickness of 0.5 mm, but the thickness may vary within wide limits. The length 10 and the width of the three-layer laminated panel of the in-vention may also be varied with a view to the specifically intended use. For the preparation of large sheets it is suit-able to use polyurethane foam of a high density.
The invention is further illustrated in the following with 15 reference to the drawing, which shows a section through a three-layer laminated panel of the invention, which panel comprises a mainly closed-cell structured polyurethane foam core 1, a metal sheet 2, which is glass enamelled on both sides, and a metal sheet 3, which may be glass enamelled.
20 The invention is further illustrated by means of the follow-ing Examples.
Production of a three-layer laminated insulating panel.
A plane closed-cell structured polyurethane foam sheet 25 (33 x 1100 x 2350 mm) of a density of 100 kg/m3 was coated on one side with a "NEOPREN"-based contact adhesive of a solids contents of 21 per cent in an amount of 160 g/m2. The polyurethane foam panel was then passed through a heating tunnel of a temperature of 60C. to dry the contact adhesive.
30 Thereafter the polyurethane foam sheet was turned over on the opposite side, whereafter "NEOPREN"-based contact adhe-sive was applied to this side and dried in exactly the samemanner. The polyurethane foam sheet was cooled to 22 C.
Two glass enamelled steel plates (0.5 x 1100 x 2350 mm) were coated with "NEOPREN"-based contact adhesive in an amount 5 of 120 g/m . The panels were passed through a heating tun-nel at a temperature of about 90C. to dry the contact adhe-sive. Thereafter the glass enamelled steel plates were cooled to a temperature of 33C.
One of the glass enamelled steel plates was placed on a fix-10 ing table with the contact adhesive surface facing upwards.
The polyurethane foam panel was placed on the glass enamelled steel plate, whereupon the other glass enamelled steel plate was placed on the polyurethane foam panel with the contact adhesive surface facing downwards~ The laminate was pressed 15 in a rolling press at a pressure of 6 kg/cm . The rolling press was equipped with rubber rollers of a shore hardness of 64.
The three-layer laminated panel thus produced was cooled un-der pressure for 24 hours.
20 Three-layer laminated panels produced as described above were mounted outdoors with a view to determining the influence of the weather. The test took 2 1/2 year, i.e. three summers and two winters. The panels were mounted towards all corners of the world in order to obtain the optimum cold/heat action.
25 Three-layer laminated panels mounted facing south were pro-duced with a black surface in order to obtain the optimum heat action. After the test period of 2 1/2 year no changes in the panels were observed.
12fi~79 Production of a three-layer laminated insulating panel with a galvanized steel plate as the back layer.
The method of Example l was followed, however using an galva-5 nized steel plate instead of one of the two glass enamelled steel plates.
The three-layer laminated panel thus produced was plane and dimension stable as well as weatherproof.
10 P.oduction of a three-layer laminated insulating panel.
A plane closed-cell structured polyurethane foam sheet (33 x 1200 x 1200 mm) of a density of 40 kg/m3 was coated on one side with a "NEOPREN"-based contact adhesive of a solids contents of 21 per cent in an amount of 160 g/m2. The 15 polyurethane foam panel was then passed through a heating tunnel of a temperature of 60C. to dry the contact adhesive.
Thereafter the polyurethane foam sheet was turned over on the opposite side, whereafter "NEOPREN"-based contact adhe-sive was applied to this side and dried in exactly the same 20 manner. The polyurethane foam sheet was cooled to 22 C.
Two glass enamelled steel plates (0.5 x 1200 x 1200 mm) were coated with "NEOPREN"-based contact adhesive in an amount of 120 g/m2. The panels were passed through a heating tun-nel at a temperature of about 90C. to dry the contact adhe-25 sive. Thereafter the glass enamelled steel plates were cooledto a temperature of 33C.
One of the glass enamelled steel plates was placed on a fix-ing table with the contact adhesive surface facing upwards.
The polyurethane foam panel was placed on the glass enamelled ~ 26~279 steel plate, whereupon the other glass enamelled steel plate was placed on the polyurethane foam panel with the contact adhesive surface facing downwards. The laminate was pressed in a rolling press at a pressure of 6 kg/cm . The rolling 5 press was equipped with rubber rollers of a shore hardness of 64.
The three-layer laminated panel thus produced was cooled un-der pressure for 24 hours.
Three-layer laminated panels produced as described above were 10 mounted outdoors with a view to determining the influence of the weather~ The test took 2 1/2 year, i.e. three summers and two winters. The panels were mounted towards all corners of the world in order to obtain the optimum cold/heat action.
Three-layer laminated panels mounted facing south were pro-15 duced with a black surface in order to obtain the optimumheat action. After the test period of 2 1/2 year no changes in the panels were observed.
Production of a three-layer laminated insulating panel.
20 A plane closed-cell structured polyurethane foam sheet (33 x 1200 x 1200 mm) of a density of 30 kg/m3 was coated on one side with a "NEOPREN"-based contact adhesive of a solids contents of 21 per cent in an amount of 160 g/m . The polyurethane foam panel was then passed through a heating 25 tunnel of a temperature of 60C. to dry the contact adhesive.
Th~reafter the polyurethane foam sheet was turned over on the opposite side, whereafter "NEOPREN"-based contact adhe-sive was applied to this side and dried in exactly the same manner. The polyurethane foam sheet was cooled to 40C.
30 Two glass enamelled steel plates (0.5 x 1200 x 1200 mm) were coated with "NEOPREN"-based contact adhesive in an amount ~264279 of 120 g/m~. The panels were passed through a heating tun-nel at a temperature of about 90C. to dry the contact adhe-sive. Thereafter the glass enamelled steel plates were cooled to a temperature of 60-65C.
5 One of the glass enamelled steel plates was placed on a fix-ing table with the contact adhesive surface facing upwards.
The polyurethane foam panel was placed on the glass enamelled steel plate, whereupon, after 30 minutes, the other glass enamelled steel plate was placed on the polyurethane foam 10 panel with the contact adhesive surface facing downwards.
The laminate was pressed in a rolling press at a pressure of 6 kg/cm . The rolling press was equipped with rubber rollers of a shore hardness of 64.
The three-layer laminated panel thus produced was cooled un-15 der pressure for 24 hours.
Some of the panels thus produced delaminate and others are not plane. Intact, plane three-layer laminated panels produced as described above were mounted outdoors in a test setup with a view to determining the influence of the weather. The test 20 took l year. It was found that the panels buckle and delami-nate.
Production of a three-layer laminated insulating panel.
The procedure of Comparison Example 1 was followed, however 25 using a galvanized steel plate instead of one of the two glass enamelled steel plates.
Some of the panels produced delaminate, and others are not plane. Intact, plane three-layers laminated panels produced 30 as described above were mounted outdoors in a test setup with 30 a v ew to determining the influence of the weather. The test 12~i~Z79 took 1 year. It was found that the panels buckle and delami-nate.
. . ,
5 The invention relates to a three-layer laminated panel com-prising a plane polyurethane foam sheet of mainly closed cell structure and having facing sheets of metal bonded thereto with a polychloroprene rubber-based contact adhesive as well as a method for the production thereof.
10 Multilayer laminated panels comprising a core plate of foam, to both sides of which sheets or boards, such as chipboards, plasterboards, plywood sheets or asbestos cement boards, are bonded with adhesive, to both sides of which sheets or boards glass or porcelain enamelled metal sheets in turn are adhe-15 sive-bonded as facing sheets or layers, are known and exten-sively used within the building and industrial sector. The glass enamelled metal sheets are enamelled on both sides.
These known multilayer laminated panels are produced thereby that on both sides of the foam core a sheet or board, e.g.
20 a chipboard, a plasterboard, a plywood sheet or an asbestos cement board, is bonded with adhesive, whereupon, in turn, on both sides of the laminated panel thus produced a glass enamelled metal sheet, preferably a glass enamelled steel plate, is bonded with adhesive.
25 Several attempts have been made to bond glass or porcelain enamelled steel plates with adhesive direct to each side of a foam sheet, as this would simplify and reduce the price of the production of multilayer panels. However, the results obtained have been unsatisfactory, as the panels thus pro-30 duced were not straight, the glass enamelled metal sheet wasmore or less loosened, the panels delaminated when subjected to impact, and the cell walls broke down when the glass en-amelled metal sheet expanded or shrunk when subjected to heat and cold, respectively.
. ~
~26427~3 It is known from U.S. Patent Specification No. 3,535,198 that polyurethane foam sheets having facing layers bonded thereto with a polychloroprene rubber-based (neoprene) con-tact adhesive and being mounted on the exterior of a building 5 delaminate as a result of the action of the temperature, cfr.
column 1, line 71 to column 2, line 4.
It has surprisingly been found that when using a mainly closed-cell structured polyurethane foam of a density of at least 40 kg/m3 and a polychloroprene rubber-based contact 10 adhesive as the adhesive, three-layer laminated panels having facing sheets or layers of glass enamelled metal can be pro-duced in a simple way. These three-layer laminated panels are weatherproof and dimension stable, even when exposed to the weather for a long time.
15 Accordingly, the three-layer laminated panel of the inven-tion is characterized by the polyurethane foam sheet having a density of at least 40 kgtm3, and by at least one of the facing sheets or layers being a metal sheet which is glass enamelled on both sides.
20 As mentioned above, either one of or both of the metal sheets may be glass enamelled. It is preferred to use glass or por-celain enamelled steel plates. When one of the metal sheets is not glass enamelled, it is e.g. made of galvanized steel, copper or aluminum.
25 In a preferred embodiment of the three-layer laminated panel of the invention the polyurethane foam has a density of 50-120 kg/m3. When the three-layer laminated panel of the invention is used as e.g. facade cladding the polyurethane foam may contain fire retardants, if desired.
30 The method of the invention is characterized by applying a polychloroprene rubber-based contact adhesive to two oppo-site sides of a polyurethane foam sheet of a density of at least 40 kg/m3 and of mainly closed cell structure, drying 126~79 the contact adhesive, if necessary, at a temperature above room temperature, placing the two metal sheets both being coated on one side with polychloroprene rubber-based contact adhesive and subsequently dried, if necessary at a tempera-5 ture above room temperature, and at least one of said twometal sheets being glass enamelled on both sides, on each side of the polyurethane foam sheet coated with contact ad-hesive with the contact adhesive layers facing the contact adhesive layers of the polyurethane foam sheet to form a 10 three-layer laminated panel, then placing said panel in a suitable press under a pressure of at least 5 kg/cm2, and thereafter, if necessary, cooling the three-layer laminated panel under pressure.
A particularly preferred embodiment of the method of the inven-15 tion consists in applying the polychloroprene rubber-based contact adhesive in an amount of about 160 g/m2 on one side of the polyurethane foam sheet (1) having a density of 50-120 kg/m3, drying the contact adhesive at a temperature of about 60C., treating the opposite side of the poly-20 urethane foam sheet (1) in the same way, and cooling thepolyurethane foam sheet to about 20-25C., thereafter placing two glass enamelled metal sheets (2,3), coated on one side with polychloroprene rubber-based contact adhesive in an amount of 120 g/m2, dried at a temperature of about 90C.
25 and cooled to about 30-40C., on each side of the contact adhesive coated polyurethane foam sheet with the contact ad-hesive layers facing the contact adhesive layers of the poly-urethane foam sheet to form a three-layer laminated panel, then placing said panel in a press under a pressure of 30 6 kg/cm2, and thereafter cooling the three-layer laminated panel under pressure for about 24 hours.
For the pressing of the three-layer laminated panel under a pressure of at least 5 kg/cm2 any suitable press can be used. A rolling press with rubber rollers of a suitable hard-35 ness can e.g. be used. However, it is also possible to makethe pressing in a permanent press.
iZ6~279 The solids contents of the polychloroprene rubber-based con-tact adhesive may vary. Usually a contact adhesive based on "NEOPREN" of a solids contents of about 21 per cent is used.
By varying the density of the used polyurethane foam within 5 the limits stated above and by varying the thickness of the polyurethane foam core three-layer laminated panels of dif-ferent properties and thicknesses can be prepared. Typically, the glass enamelled steel plate has a thickness of 0.5 mm, but the thickness may vary within wide limits. The length 10 and the width of the three-layer laminated panel of the in-vention may also be varied with a view to the specifically intended use. For the preparation of large sheets it is suit-able to use polyurethane foam of a high density.
The invention is further illustrated in the following with 15 reference to the drawing, which shows a section through a three-layer laminated panel of the invention, which panel comprises a mainly closed-cell structured polyurethane foam core 1, a metal sheet 2, which is glass enamelled on both sides, and a metal sheet 3, which may be glass enamelled.
20 The invention is further illustrated by means of the follow-ing Examples.
Production of a three-layer laminated insulating panel.
A plane closed-cell structured polyurethane foam sheet 25 (33 x 1100 x 2350 mm) of a density of 100 kg/m3 was coated on one side with a "NEOPREN"-based contact adhesive of a solids contents of 21 per cent in an amount of 160 g/m2. The polyurethane foam panel was then passed through a heating tunnel of a temperature of 60C. to dry the contact adhesive.
30 Thereafter the polyurethane foam sheet was turned over on the opposite side, whereafter "NEOPREN"-based contact adhe-sive was applied to this side and dried in exactly the samemanner. The polyurethane foam sheet was cooled to 22 C.
Two glass enamelled steel plates (0.5 x 1100 x 2350 mm) were coated with "NEOPREN"-based contact adhesive in an amount 5 of 120 g/m . The panels were passed through a heating tun-nel at a temperature of about 90C. to dry the contact adhe-sive. Thereafter the glass enamelled steel plates were cooled to a temperature of 33C.
One of the glass enamelled steel plates was placed on a fix-10 ing table with the contact adhesive surface facing upwards.
The polyurethane foam panel was placed on the glass enamelled steel plate, whereupon the other glass enamelled steel plate was placed on the polyurethane foam panel with the contact adhesive surface facing downwards~ The laminate was pressed 15 in a rolling press at a pressure of 6 kg/cm . The rolling press was equipped with rubber rollers of a shore hardness of 64.
The three-layer laminated panel thus produced was cooled un-der pressure for 24 hours.
20 Three-layer laminated panels produced as described above were mounted outdoors with a view to determining the influence of the weather. The test took 2 1/2 year, i.e. three summers and two winters. The panels were mounted towards all corners of the world in order to obtain the optimum cold/heat action.
25 Three-layer laminated panels mounted facing south were pro-duced with a black surface in order to obtain the optimum heat action. After the test period of 2 1/2 year no changes in the panels were observed.
12fi~79 Production of a three-layer laminated insulating panel with a galvanized steel plate as the back layer.
The method of Example l was followed, however using an galva-5 nized steel plate instead of one of the two glass enamelled steel plates.
The three-layer laminated panel thus produced was plane and dimension stable as well as weatherproof.
10 P.oduction of a three-layer laminated insulating panel.
A plane closed-cell structured polyurethane foam sheet (33 x 1200 x 1200 mm) of a density of 40 kg/m3 was coated on one side with a "NEOPREN"-based contact adhesive of a solids contents of 21 per cent in an amount of 160 g/m2. The 15 polyurethane foam panel was then passed through a heating tunnel of a temperature of 60C. to dry the contact adhesive.
Thereafter the polyurethane foam sheet was turned over on the opposite side, whereafter "NEOPREN"-based contact adhe-sive was applied to this side and dried in exactly the same 20 manner. The polyurethane foam sheet was cooled to 22 C.
Two glass enamelled steel plates (0.5 x 1200 x 1200 mm) were coated with "NEOPREN"-based contact adhesive in an amount of 120 g/m2. The panels were passed through a heating tun-nel at a temperature of about 90C. to dry the contact adhe-25 sive. Thereafter the glass enamelled steel plates were cooledto a temperature of 33C.
One of the glass enamelled steel plates was placed on a fix-ing table with the contact adhesive surface facing upwards.
The polyurethane foam panel was placed on the glass enamelled ~ 26~279 steel plate, whereupon the other glass enamelled steel plate was placed on the polyurethane foam panel with the contact adhesive surface facing downwards. The laminate was pressed in a rolling press at a pressure of 6 kg/cm . The rolling 5 press was equipped with rubber rollers of a shore hardness of 64.
The three-layer laminated panel thus produced was cooled un-der pressure for 24 hours.
Three-layer laminated panels produced as described above were 10 mounted outdoors with a view to determining the influence of the weather~ The test took 2 1/2 year, i.e. three summers and two winters. The panels were mounted towards all corners of the world in order to obtain the optimum cold/heat action.
Three-layer laminated panels mounted facing south were pro-15 duced with a black surface in order to obtain the optimumheat action. After the test period of 2 1/2 year no changes in the panels were observed.
Production of a three-layer laminated insulating panel.
20 A plane closed-cell structured polyurethane foam sheet (33 x 1200 x 1200 mm) of a density of 30 kg/m3 was coated on one side with a "NEOPREN"-based contact adhesive of a solids contents of 21 per cent in an amount of 160 g/m . The polyurethane foam panel was then passed through a heating 25 tunnel of a temperature of 60C. to dry the contact adhesive.
Th~reafter the polyurethane foam sheet was turned over on the opposite side, whereafter "NEOPREN"-based contact adhe-sive was applied to this side and dried in exactly the same manner. The polyurethane foam sheet was cooled to 40C.
30 Two glass enamelled steel plates (0.5 x 1200 x 1200 mm) were coated with "NEOPREN"-based contact adhesive in an amount ~264279 of 120 g/m~. The panels were passed through a heating tun-nel at a temperature of about 90C. to dry the contact adhe-sive. Thereafter the glass enamelled steel plates were cooled to a temperature of 60-65C.
5 One of the glass enamelled steel plates was placed on a fix-ing table with the contact adhesive surface facing upwards.
The polyurethane foam panel was placed on the glass enamelled steel plate, whereupon, after 30 minutes, the other glass enamelled steel plate was placed on the polyurethane foam 10 panel with the contact adhesive surface facing downwards.
The laminate was pressed in a rolling press at a pressure of 6 kg/cm . The rolling press was equipped with rubber rollers of a shore hardness of 64.
The three-layer laminated panel thus produced was cooled un-15 der pressure for 24 hours.
Some of the panels thus produced delaminate and others are not plane. Intact, plane three-layer laminated panels produced as described above were mounted outdoors in a test setup with a view to determining the influence of the weather. The test 20 took l year. It was found that the panels buckle and delami-nate.
Production of a three-layer laminated insulating panel.
The procedure of Comparison Example 1 was followed, however 25 using a galvanized steel plate instead of one of the two glass enamelled steel plates.
Some of the panels produced delaminate, and others are not plane. Intact, plane three-layers laminated panels produced 30 as described above were mounted outdoors in a test setup with 30 a v ew to determining the influence of the weather. The test 12~i~Z79 took 1 year. It was found that the panels buckle and delami-nate.
. . ,
Claims (10)
1. A three-layer laminated panel comprising a plane poly-urethane foam sheet of mainly closed cell structure having outer facing sheets of metal bonded thereto with a poly-chloroprene rubber-based contact adhesive, c h a r a c t e r-i z e d by the polyurethane foam sheet (1) having a density of at least 40 kg/m3 and by at least one of the fac-ing sheets (2 and/or 3) being a metal sheet which is glass enamelled on both sides.
2. A panel according to claim 1, c h a r a c t e r i z e d by the glass enamelled metal sheet (2) being a glass enamelled steel plate.
3. A panel according to claim 1, c h a r a c t e r i z e d by both facing sheets (2 and 3) being a glass enamelled steel plate.
4. A panel according to any one of claims 1 to 3, c h a r -a c t e r i z e d by the polyurethane foam having a density of 50-120 kg/m .
5. A panel according to any one of claims 1 to 3, c h a r -a c t e r i z e d by the polyurethane foam containing fire--retardants.
6. A panel according to any one of claims 1 to 3, c h a r -a c t e r i z e d by the facing sheets being of a thickness of 0.4-1.0 mm.
7. A method for the production of a three-layer laminated panel comprising a plane polyurethane foam sheet of mainly closed cell structure having facing sheets of metal bonded the-reto with a polychloroprene rubber-based contact adhesive, c h a r a c t e r i z e d by applying a polychloroprene rub-ber-based contact adhesive to two opposite sides of a mainly closed-cell structured polyurethane foam sheet (1) of a density of at least 40 kg/m3, drying, if necessary, the con-tact adhesive at a temperature above room temperature and placing two metal sheets (2 and 3), both being coated on one side with polychloroprene rubber-based contact adhesive and subsequently dried, if necessary, at a temperature above room temperature, and at least one of said two metal sheets (2 and 3) being glass enamelled on both sides, on each side of the contact adhesive coated polyurethane foam sheet (1) with the contact adhesive layers facing the contact adhesive layers of the polyurethane foam sheet to form a three-layer laminated panel, thereafter placing said panel in a suitable press under a pressure of at least 5 kg/cm2, and thereafter, if necessary, cooling the three-layer laminated panel under pressure.
8. A method according to claim 7, c h a r a c t e r i z e d by the glass enamelled metal sheet (2) being a glass enamelled steel plate.
9. A method according to claim 7, c h a r a c t e r i z e d by the two metal sheets (2 and 3) being glass enamelled steel plates.
10. A method according to claim 7, c h a r a c t e r i z e d by applying the polychloroprene rubber-based contact adhesive in an amount of about 160 g/m on one side of the polyureth-ane foam sheet (1) having a density of 50-120 kg/m3, drying the contact adhesive at a temperature of about 60°C., treating the opposite side of the polyurethane foam sheet (1) in the same way, and cooling the polyurethane foam sheet to about 20-25°C., thereafter placing two glass enamelled metal sheets (2,3), coated on one side with polychloroprene rubber-based contact adhesive in an amount of 120 g/m2, dried at a tempe-rature of about 90°C. and cooled to about 30-40°C., on each side of the contact adhesive coated polyurethane foam sheet with the contact adhesive layers facing the contact adhesive layers of the polyurethane foam sheet to form a three-layer laminated panel, then placing said panel in a press under a pressure of 6 kg/cm2, and thereafter cooling the three--layer laminated panel under pressure for about 24 hours.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK4822/85 | 1985-10-21 | ||
| DK482285A DK153381C (en) | 1985-10-21 | 1985-10-21 | 3-LAYER PLATE CONSISTING OF A PLANE OF POLYURETHAN FOOD PLASTIC WITH COATED METALYDER LAYERS AND PROCEDURES FOR PRODUCING THEREOF |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1264279A true CA1264279A (en) | 1990-01-09 |
Family
ID=8136947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000520928A Expired - Fee Related CA1264279A (en) | 1985-10-21 | 1986-10-20 | Three-layer laminated panel comprising a foam core having facing sheets or layers bonded thereto with adhesive as well as a method for the production of such a panel |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4698278A (en) |
| EP (1) | EP0220651B1 (en) |
| AT (1) | ATE59206T1 (en) |
| CA (1) | CA1264279A (en) |
| DE (1) | DE3676272D1 (en) |
| DK (1) | DK153381C (en) |
| NO (1) | NO864188L (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236917A (en) * | 1989-05-04 | 1993-08-17 | Sterling Winthrop Inc. | Saccharin derivatives useful as proteolytic enzyme inhibitors and compositions and method of use thereof |
| FR2665666B1 (en) * | 1990-08-08 | 1994-09-16 | Alsthom Gec | ANTI-VANDALISM TRIM PANEL. |
| CA2030011A1 (en) * | 1990-11-14 | 1992-05-15 | Peter A.D. Mill | Composite building panel |
| DE4218464A1 (en) * | 1992-06-04 | 1993-12-09 | Hans Josef May | Plate-like component and method for its production |
| US6050208A (en) * | 1996-11-13 | 2000-04-18 | Fern Investments Limited | Composite structural laminate |
| US6706406B1 (en) | 1996-11-13 | 2004-03-16 | Fern Investments Limited | Composite steel structural plastic sandwich plate systems |
| US5778813A (en) * | 1996-11-13 | 1998-07-14 | Fern Investments Limited | Composite steel structural plastic sandwich plate systems |
| US7261932B2 (en) * | 1996-11-13 | 2007-08-28 | Intelligent Engineering (Bahamas) Limited | Composite structural laminate plate construction |
| FR2770448B1 (en) * | 1997-11-06 | 1999-12-10 | Euramax Coated Products Sa | DIRECTLY COLD FORMABLE COMPOSITE PLATE, MANUFACTURING METHOD AND USE FOR SIGNS |
| US6062624A (en) * | 1998-04-21 | 2000-05-16 | Lear Corporation | Sealing acoustical baffle and method therefor |
| DE19932815B4 (en) * | 1999-07-14 | 2005-12-15 | Erhard Sport International Gmbh & Co. | Field limit |
| US6438906B1 (en) * | 2000-07-18 | 2002-08-27 | Paul Janssens-Lens | Safe room |
| US6706239B2 (en) | 2001-02-05 | 2004-03-16 | Porvair Plc | Method of co-forming metal foam articles and the articles formed by the method thereof |
| DE20105083U1 (en) | 2001-03-23 | 2001-08-02 | Armacell Enterprise Gmbh | Insulating material in the form of plates or tubes |
| US6546887B2 (en) * | 2001-08-03 | 2003-04-15 | Intelligent Engineering (Bahamas) Limited | Movable bulkhead |
| NL1018809C2 (en) * | 2001-08-23 | 2003-02-25 | Corus Technology B V | Panel. |
| US20030150183A1 (en) * | 2002-02-13 | 2003-08-14 | Patrick Egan | Prefabricated wall panel |
| US20060090401A1 (en) * | 2003-01-10 | 2006-05-04 | Jamison Door Company | Air heated, flexible door panel |
| US7328831B1 (en) | 2004-06-25 | 2008-02-12 | Porvair Plc | Method of making a brazed metal article and the article formed thereby |
| US20060194028A1 (en) * | 2005-02-25 | 2006-08-31 | Best-Rite Chalkboard Company | Replacement skins for a writing surface |
| US20060283140A1 (en) * | 2005-06-03 | 2006-12-21 | Intelligent Engineering (Bahamas) Limited | Wooden decks |
| US8733024B2 (en) | 2005-10-28 | 2014-05-27 | Jamison Door Company | Flexible door with rigid insulation |
| US8215351B2 (en) * | 2006-10-13 | 2012-07-10 | Michelin Recherche Et Technique | Shear band |
| DE102008003560A1 (en) * | 2008-01-09 | 2009-07-23 | Voestalpine Polynorm Van Niftrik Bv | Metal hybrid layer composite part with at least one metallic outer layer and method for its production |
| US20090313909A1 (en) * | 2008-06-20 | 2009-12-24 | Bayer Materialscience Llc | Low density semi-rigid flame resistant foams |
| MY147002A (en) * | 2008-12-19 | 2012-10-15 | Wong Chiang Heng | Nail-plated composite structural system |
| LT3184943T (en) * | 2015-12-23 | 2019-11-11 | Ltv Staal | A modular element for a thermally insulated construction and a construction comprising such modular elements |
| US11511566B2 (en) | 2019-12-10 | 2022-11-29 | The Goodyear Tire & Rubber Company | Shear band |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB297867A (en) * | 1927-06-29 | 1928-10-01 | Albert Alfred Mead | Improvements relating to the attachment of metal veneers and articles of manufacturecomprising such veneers |
| FR1532244A (en) * | 1965-06-05 | 1968-07-12 | Perfil En Frio Sa | Improvements in the construction of prefabricated panels |
| GB1175528A (en) * | 1966-11-14 | 1969-12-23 | Ici Ltd | Structural Laminate having a Foamed Core and Two Rigid Faces |
| DE2010358A1 (en) * | 1969-03-05 | 1970-11-12 | VEB Bandstahlkombinat Sitz Eisenhüttenstadt, χ 1220 Eisenhüttenstadt | Composite steel and aluminium sheeting or - strips |
| DK129774A (en) * | 1974-03-11 | 1975-09-12 | O Jorgensen | |
| GB1478692A (en) * | 1974-05-02 | 1977-07-06 | Bpb Industries Ltd | Insulation material |
| DE2554914A1 (en) * | 1975-12-06 | 1977-06-23 | Stephen Hans Albrecht | Prefabricated wall section with intermediate foam layer - has foaming head introduced between two diverging outer layers |
| GB1578074A (en) * | 1978-05-19 | 1980-10-29 | Zarach S L | Glass panels |
| GB2066156B (en) * | 1979-12-28 | 1984-12-05 | Unitex Ltd | Foam core sandwich construction |
| JPS56155273A (en) * | 1980-04-30 | 1981-12-01 | Sekisui Chem Co Ltd | Ground material for building |
| US4468431A (en) * | 1983-11-17 | 1984-08-28 | Iml Corporation | Polyimide composite |
-
1985
- 1985-10-21 DK DK482285A patent/DK153381C/en active
-
1986
- 1986-10-20 DE DE8686114524T patent/DE3676272D1/en not_active Expired - Fee Related
- 1986-10-20 NO NO864188A patent/NO864188L/en unknown
- 1986-10-20 EP EP86114524A patent/EP0220651B1/en not_active Expired - Lifetime
- 1986-10-20 CA CA000520928A patent/CA1264279A/en not_active Expired - Fee Related
- 1986-10-20 AT AT86114524T patent/ATE59206T1/en not_active IP Right Cessation
- 1986-10-21 US US06/921,723 patent/US4698278A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| NO864188D0 (en) | 1986-10-20 |
| ATE59206T1 (en) | 1991-01-15 |
| DK482285A (en) | 1987-04-22 |
| EP0220651A3 (en) | 1988-08-17 |
| DK482285D0 (en) | 1985-10-21 |
| DE3676272D1 (en) | 1991-01-31 |
| NO864188L (en) | 1987-04-22 |
| DK153381C (en) | 1988-12-05 |
| US4698278A (en) | 1987-10-06 |
| EP0220651B1 (en) | 1990-12-19 |
| EP0220651A2 (en) | 1987-05-06 |
| DK153381B (en) | 1988-07-11 |
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