GB2028714A - A method of making a stiffened moulded panel of polyurethane foam, and a panel made by the method - Google Patents

A method of making a stiffened moulded panel of polyurethane foam, and a panel made by the method Download PDF

Info

Publication number
GB2028714A
GB2028714A GB7922972A GB7922972A GB2028714A GB 2028714 A GB2028714 A GB 2028714A GB 7922972 A GB7922972 A GB 7922972A GB 7922972 A GB7922972 A GB 7922972A GB 2028714 A GB2028714 A GB 2028714A
Authority
GB
United Kingdom
Prior art keywords
panel
bonding agent
polyurethane
irreversible
sheet
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
Application number
GB7922972A
Other versions
GB2028714B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Controls Roth SAS
Original Assignee
Roth Freres SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roth Freres SA filed Critical Roth Freres SA
Publication of GB2028714A publication Critical patent/GB2028714A/en
Application granted granted Critical
Publication of GB2028714B publication Critical patent/GB2028714B/en
Expired legal-status Critical Current

Links

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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/569—Shaping and joining components with different densities or hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • 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
    • B32B27/10—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 paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/007—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a foam 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
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • 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
    • 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
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/022—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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/18—Fabrics, textiles
    • B32B2305/188—Woven fabrics
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • 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
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • B32B2315/085—Glass fiber cloth or fabric
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • 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
    • B32B2375/00—Polyureas; Polyurethanes
    • 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

Abstract

A sheet 1 of foamed polyurethane and stiffening sheets 2 are assembled with interposed bonding agent and the assembly heated for 1 to 2 minutes at 170 DEG to 220 DEG C in an oven or between heating plates 3 and immediately placed between cooled press platens 4 and 5 and compressed to about 8 mm thickness. In the hot assembly the bonding agent liquifies to act as a lubricant during the compression, being an irreversible polyurethane elastomer which sets as it cools and continues to polymerise for up to 48 hours, the shape of the resulting stiffened moulded panel being permanent. The sheets 2 may be of Kraft or other paper, felt or woven fabric, glass-fibre mesh, or foil. <IMAGE>

Description

SPECIFICATION A method of making a stiffened moulded panel of polyurethane foam, and a panel by the method.
This present invention relates to a method of making a stiffened moulded panel of polyurethane foam and to a panel made by the method. Such panels may be used in false ceilings or as panels in vehicles, for example.
The invention further relates to a panel made by this method.
There are rigid or semi-rigid foams of polyurethane with good thermo-plasticity, of a kind such that a sheet constituted of such foam can be heated for remoulding, then be placed between the platens of a press equipped with a die tool, the panel obtained after functioning of the press assuming a permanent shape as soon as the foam- is cooled again. The coc!jng of the foam is rapid, from the fact that it is effected during the compression of the panel in the press tool, this latter being moreover, advantageously cooled for this purpose.
These transformed sheets to constitute moulded panels are obtained either by remoulding to the desired thickness of blocks which have been foamed freely, or by laminated foaming between two press rolls, the thickness of the sheets being determined by the distance separating the press rolls.
The polyurethane foam which is utilised is a foam of two components, namely a first component constituted by: - 100 parts by weight of a polyether resin such as that known under the commercia! denomination Desmophen 1077 A from the Bayer Company.
- 0.2 to 1 parts by weight of a trimerisation activator of polyisocyanurate for hardening, such as that known under the commercial denomination 1026 of the Bayer Company, and - 0.5 to 2 parts by weight of water 5 and a second component constituted by: - 230 parts by weight of methyl-phenyldiisocyanate, such as that known under the commercial denomination Desmodur 1844 or 44 V 20 of the Bayer Company.
The panels obtained by the known methods are, however, of a high net cost and of a high weight. In practice, in order to obtain a moulded panel of 2m2 and of a thickness of 8mm, stiff enough to be self-supporting, for example for making a head lining of an automobile, commencing with a sheet of foam of 40mm in thickness and of a density of 80 grammes per litre, shaping and compression to a thickness of 8mm are effected to produce a panel of 2m2 with a weight of 6.400 kg, which is incompatible with a low net cost.
The present invention is intended to mitigate these disadvantages.
According to the invention there is employed a method of making a stiffened, moulded panel of polyurethane foam,comprising the steps of: i) commencing with a foam sheet of polyurethane and with two stiffening sheets.
ii) coating the foam sheet and!o r the two stiffening sheets with a bonding agent.
iii) placing the foam sheet with the two stiffening sheets in an oven, or between two heating plates, for a period of 1 to 2 minutes at a temperature of 170O to 220"C, iv) withdrawing the hot composite thus obtained from the source of heat and placing it immediately, within a lapse of time of between 3 and 10 seconds (on average of 5 seconds), between the platens of a press equipped with a die and with a matrix; v) pressing the composite for a period of 30 seconds until-it is tooled again, and vi) opening-the press and removing the final moulded panel.
The bonding agent is preferably an irreversible polyurethane elastomerwhich is reactivatable by heat, and comprises two polymerisablecompo- nents.
It is advanta~eous if the bonding agent, after its reactivation by heat, serves for the lubrication of the stiffening sheets to slide along the sheet of foam, then after cooling serves as the bonding agent.
The bonding agent can commence to polymerise after its liquification by heat, and this can continue during a period of 48 hours following the moulding, in a manner such that the process becomes irreversible, even when the moulded panel is subjected to a temperature of 150"C.
The elastomer of polyurethane forming the bonding agent may present the following preferred compositiOn: component 1 :100 parts by weight of a resin of mono-component polyurethane, for example that known under the commercial denomination Desmo coll of the Bayer Company or under the denomina tion Witcobond 5240 of the Witco Company - component 2 ::5 to 10 parts by weight of an isocyanate for hardening, for example that known under the commercial denomination Witco XB-of the Witco Company The invention includes a moulded panel obtained by application of the method described above, and constituted essentially by a sheet of polyurethane foam, and by two stiffening sheets bonded to the two surfaces of the foam sheet by means of a bonding agent in the form of an irreversible polyurethane elastomer. The foam sheet may be from 6 mum to 10 mm inthickness;preferably about 8 mm, ofuniform or varying thickness.
How the invention may be put into practice appears from the description hereinafter with reference, by way of non-limitative example, to the annexed schematic drawings, in which: Figures 1 and 3 show different stages in a method of manufacture according to the invention,-and Figure 4 is a view in section of a panel according to the invention.
Referring to the drawings, a sheet of polyurethane foam and/or two stiffening sheets are initially-coated with an irreversible polyurethane elastomer of two components. For this purpose the two components are mixed in a device with a spraying head for the mixture of polyurethane elastomer to be sprayed on to the foam sheet and/or on to the stiffening sheets.
This mixture dries in about 2 to 3 hours at ambiant temperature, or in several minutes in the case of hot drying, for example by hot air, by infra-red, or in an oven.
As Figure 1 shows, as assembly is formed by providing the coated foam sheet 1, on its two surfaces, with the two coated stiffening sheets 2, then this assembly is placed between two heating plates 3, or in an oven, these plates being at a temperature of 1700 to 220 C. After a heating time of 1 to 2 minutes, the foam softens again, and each coating of elastomer liquifies, its polymerisation process then being initiated by the heat. The hot composite thus obtained is withdrawn from the plates, or from the oven, and is immediately placed between the platens of a press equipped with a die 4 and with a matrix 5, that is to say within a lapse of time of between 3 to 10 seconds, on average of 5 seconds, in order to put it in moulded form by shaping compression (Figure 2).The press is then closed, and in the course of the deformation of the foam sheet by shaping compression, the stiffening sheets 2 slide on the surface of the foam sheet 1 without tearing, and while fitting without tension to all the shapes, due to the lubricating effect afforded by the liquified polyurethane elastomer (Figure 3).
The composite is maintained under pressure between the platens of the press for a period of 30 seconds, which corresponds to the duration of recooling, due to a circulation of cold water in the interior of the die 4 and of the matrix 5. After the recooling, the press is opened for the withdrawal of the moulded panel 6, the shape of which has become permanent, and which presents a great stiffness, because of the strong adherence of the stiffening sheets 2 to the foam sheet 1, the elastomer becoming hardened to act as the bonding agent.
After this removal of the panel 6 from the press, the chemical process of polymerisation proceeds for a period of 48 hours in orderto become complete, the process then being irreversible in such a manner that even if the panel is subjected to a temperature of 1 500C the liquification of the elastomer does not occur.
The stiffening sheets 2 may be of kraft or other paper, of webs of glass fibre, of felt, of woven material, of laminated material, or of metal foil or other sheet material.
The stiffness of the moulded panel 6 is obtained due to the stiffening sheets 2, which are stuck during the moulding to the foam sheet 1. During the moulding, the irreversible polyurethane elastomer, liquified by the heat, permits sliding of the stiffening sheets 2 along the surfaces of the foam sheet 1 in such a manner that the said stiffening sheets 2 follow the changes in relief of the foam, which changes are imprinted by the tools of the press, and while matching the shapes without tearing or undesirable latent tension.
Due to the invention, it is thus possible to manufacture, for example, a self-supporting moulded panel of 2m2, of a weight of 1.500 kg, and thus of a sheet of foam of 15 mm in thickness and of a density of 50 grammes per litre.
Modifications are possible, for example in the composition of the bonding agent, without departing from the invention as claimed.

Claims (10)

1. A method of making a stiffened panel of polyurethane foam, comprising the steps of: i) commencing with a sheet of polyurethane and with two stiffening sheets, ii) coating the foam sheet and/or the two stiffening sheets with a bonding agent, iii) placing the foam sheet between the two stiffening sheets in an oven, or between two heating plates, for a period of 1 to 2 minutes at a temperature of 170 to 220 C, iv) withdrawing the hot composite thus obtained from the source of heat and placing it immediately, within a lapse of time of between 3 and 10 seconds (on average of 5 seconds) between the platens of a press equipped with a die and with a matrix, v) pressing the composite for a period of 30 seconds or until it is cooled again, and vi) opening the press and removing the final moulded panel.
2. A method according to Claim 1, wherein the bonding agent is an irreversible polyurethane elastomer which is reactivatable by heat and comprises two polymerisable components.
3. A method according to Claim 1 or 2, wherein the bonding agent becomes reactivated by the heat and serves for the lubrication of the stiffening sheets along the foam sheet, then after cooling again serves as the bonding agent.
4. A method according to Claim 1, 2 or 3, wherein the bonding agent is an elastomer which polymerises subsequently to its liquification by heat, this polymerisation continuing for a period of 48 hours after the moulding, in a manner such that the process becomes irreversible, even when the moulded panel is subjected to a temperature of 1 50 C.
5. A method according to any of Claims 1 to 4, wherein the irreversible bonding agent has the following compositions: - component 1:100 parts by weight of a mono component polyurethane resin, (for example, that known under the commerical denomination Desmocoll of the Bayer Company or the denomination Witcobond 5240 of the Witco Company), and - component 2:5 to 10 parts by weight of isocyan ate for hardening, (for example that known under the commercial denomination Witco XB of the Wit co Company).
6. A method according to any one of Claims 1 to 5, wherein the foam sheet in the finished panel has a thickness between 6 mm and 10 mm.
7. A method according to any one of Claims 1 to 6, wherein the final moulded panel is of uniform thickness.
8. A method of making a panel, substantially as described with reference to the accompanying drawings.
9. A stiffened moulded panel, made by a method according to any one of Claims 1 to 8, characterised in that it is constituted by a sheet of polyurethane foam sheet by means of a bonding agent in the form of an irreversible polyurethane elastomer.
10. A panel according to Claim 9, one or both of the stiffening sheets being of paper, felt, woven fabric, or glass fibre mesh.
GB7922972A 1978-07-07 1979-07-02 Method of making a stiflened moulded panel of polyurethanefoam and a panel made by the method Expired GB2028714B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7821329A FR2430310A1 (en) 1978-07-07 1978-07-07 METHOD OF MANUFACTURING, BY HIGH-TEMPERATURE PRESSURE DEFORMATION, MOLTEN AND REINFORCED POLYURETHANE FOAM PANELS, AND PANEL OBTAINED THEREBY

Publications (2)

Publication Number Publication Date
GB2028714A true GB2028714A (en) 1980-03-12
GB2028714B GB2028714B (en) 1982-07-21

Family

ID=9210871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7922972A Expired GB2028714B (en) 1978-07-07 1979-07-02 Method of making a stiflened moulded panel of polyurethanefoam and a panel made by the method

Country Status (9)

Country Link
BE (1) BE877464A (en)
DE (1) DE2927360A1 (en)
ES (1) ES482286A1 (en)
FR (1) FR2430310A1 (en)
GB (1) GB2028714B (en)
IT (1) IT1124119B (en)
NL (1) NL7905316A (en)
PT (1) PT69859A (en)
SE (1) SE445985B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159764A (en) * 1984-04-26 1985-12-11 Colamco Inc Composite foam articles and method for fabricating such articles
GB2179291A (en) * 1985-08-17 1987-03-04 Ecosse A C Ltd Panel
US4741951A (en) * 1987-01-29 1988-05-03 Reeves Bros., Inc. Method for forming thermoformable polyurethane foam articles
GB2216062A (en) * 1988-02-17 1989-10-04 H P Chemie Pelzer Res & Dev Moulding
GB2521348A (en) * 2013-12-04 2015-06-24 Nathan Lewis Automotive water shedder

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3138442C2 (en) * 1981-09-24 1984-01-26 Günter Hans 1000 Berlin Kiss Arrangement for lamination of molded parts
DE3239065C2 (en) * 1982-10-22 1984-08-30 Peguform-Werke GmbH, 7805 Bötzingen Process for the production of textile-laminated molded parts
DE102009033701A1 (en) * 2009-07-16 2011-01-27 Premium Aerotec Gmbh Method for heating thermoplastic boards by means of heat conduction
DE102015007920A1 (en) * 2015-06-20 2016-12-22 Daimler Ag Method and tool for producing a composite component for a vehicle
DE102018217545A1 (en) * 2018-10-12 2020-04-16 BSH Hausgeräte GmbH Procedure and household appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE575494A (en) * 1958-02-11 1959-05-29 Lonza Usines Electr Et Chim Sa Conformed laminate plate.
BE659912A (en) * 1964-02-19 1965-08-18
FR2336246A2 (en) * 1975-02-05 1977-07-22 Roth Sa Freres MANUFACTURING PROCESS OF SHAPED PANELS BASED ON CARDBOARD AND FOAM, AND PANELS THUS REALIZED

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159764A (en) * 1984-04-26 1985-12-11 Colamco Inc Composite foam articles and method for fabricating such articles
US4698252A (en) * 1984-04-26 1987-10-06 Colamco, Inc. Composite foam articles and method for fabricating such articles
GB2179291A (en) * 1985-08-17 1987-03-04 Ecosse A C Ltd Panel
US4741951A (en) * 1987-01-29 1988-05-03 Reeves Bros., Inc. Method for forming thermoformable polyurethane foam articles
GB2216062A (en) * 1988-02-17 1989-10-04 H P Chemie Pelzer Res & Dev Moulding
GB2216062B (en) * 1988-02-17 1992-03-04 H P Chemie Pelzer Res & Dev Moulding
GB2521348A (en) * 2013-12-04 2015-06-24 Nathan Lewis Automotive water shedder

Also Published As

Publication number Publication date
BE877464A (en) 1979-11-05
NL7905316A (en) 1980-01-09
GB2028714B (en) 1982-07-21
SE445985B (en) 1986-08-04
DE2927360A1 (en) 1980-01-24
IT1124119B (en) 1986-05-07
ES482286A1 (en) 1980-08-16
SE7905895L (en) 1980-01-08
IT7912659A0 (en) 1979-07-03
FR2430310A1 (en) 1980-02-01
FR2430310B1 (en) 1981-06-26
PT69859A (en) 1979-08-01

Similar Documents

Publication Publication Date Title
US4385955A (en) Method of forming contoured fiberglass sheet
US5134014A (en) Moldable foam composite
US5512233A (en) Method of making a panel with a spray formed skin
US4529641A (en) Thermoformable laminate structure
EP0642411B1 (en) Method for manufacturing self-supporting synthetic trim parts
US5049439A (en) Thermoformable article
GB2028714A (en) A method of making a stiffened moulded panel of polyurethane foam, and a panel made by the method
EP0266224A2 (en) Process for the manufacture of laminated elements
US4608104A (en) Method of making a thermoformable laminate structure
CA2149391C (en) Method of manufacturing moulded articles
DE2545700A1 (en) Self-supporting padded sandwich type mouldings e.g. car roof linings - comprising a fibre reinforced plastics lamina and a foamed coating
EP1235679B1 (en) Method for producing components of interior fittings in motor vehicles and corresponding article
DE4400894A1 (en) Composite interior trim for vehicles
US4798763A (en) Method of molding a laminated foamable sheet
EP0281596B1 (en) Process of forming a contoured insulating sheet
JPH04185428A (en) Interior material for vehicle and manufacture thereof
DE19520477A1 (en) Fibre-reinforced, thermally expanded thermoplastic sheet
EP0137125A2 (en) Method of manufacturing mouldable self-supporting panels, in particular preformed panels for motorvehicle interior finishing, and product obtained thereby
GB2041292A (en) Formed parts made of a combination of thermo-formable double sheet and a thermo-formable sheet of cross-linked polyethylene foam
DE3841560A1 (en) Moulded panel and moulded parts for use in automobile construction and process for their production
JP3274919B2 (en) Compression molding method for waste polyurethane products
JPH03114742A (en) Interior finish material for vehicle and manufacture thereof
US6235138B1 (en) Polyurethane foam/PVC laminate for automotive instrument panels
JPH0474182B2 (en)
EP2242638A1 (en) Method for producing a composite part

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940702