WO1986001772A1 - Surface coating process - Google Patents

Surface coating process Download PDF

Info

Publication number
WO1986001772A1
WO1986001772A1 PCT/SE1985/000355 SE8500355W WO8601772A1 WO 1986001772 A1 WO1986001772 A1 WO 1986001772A1 SE 8500355 W SE8500355 W SE 8500355W WO 8601772 A1 WO8601772 A1 WO 8601772A1
Authority
WO
WIPO (PCT)
Prior art keywords
paint
layer
sheet
process according
lamination
Prior art date
Application number
PCT/SE1985/000355
Other languages
French (fr)
Inventor
Leif Ibsen
Gerulf Naglitsch
Original Assignee
Becker Industrifärg Ab
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20357056&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1986001772(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Becker Industrifärg Ab filed Critical Becker Industrifärg Ab
Priority to DE8585904891T priority Critical patent/DE3571415D1/en
Priority to AT85904891T priority patent/ATE44496T1/en
Publication of WO1986001772A1 publication Critical patent/WO1986001772A1/en
Priority to DK229086A priority patent/DK162707C/en
Priority to FI870944A priority patent/FI85568C/en

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
    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/586—No clear coat specified each layer being cured, at least partially, separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/06—Embossing
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating

Definitions

  • the invention relates to a process for surface coating of sub ⁇ strates with plane surfaces, such as coil or sheet materials of metals.
  • paint- and lacquer materials are applied in one or several layers on the substrate with plane surface.
  • This (these) layer(s) is (are) applied as wet paint layer(s), which in dried state will have a certain degree of thermoplasticity.
  • the first layer will be a primer coat, such as e.g. an epoxy-, acrylic- or phenolic paint.
  • a pigmented or un- pig ented paint layer may be applied as a second layer on the primer coat.
  • suitable paint materials are fluorocarbon dispersions (PVF), PVC-plastisols, vinyl- or latex paints. Such wet paint is dried after application.
  • the paints are applied according to conventional techniques, such as roller coating, spray coating, curtain coating etc.
  • the drying is also made with conventional methods, such as IR-tubes or convection heating.
  • a plastic sheet or foil is applied directly upon the hot paint surface.
  • the plastic sheet applied directly upon the hot paint surface by lamination can be of various pore-free suitable foil materials, such as PVC-sheet, PVF-sheet, thermoplastic acrylic sheet etc.
  • an engraved pressure roller can be used to produce an embossing effect.
  • an embossed sheet surface due to the underlying layer or layers of paint- and lacquer material, to obtain an embossed sheet surface.
  • These layers have a total thickness of 40-300 microns which allows such embossing.
  • a surface with extraordinary hardness and wear resistance is obtained and which, as mentioned above, may be embossed. Further, by means of the surface coating process according to the present invention, a layer is obtained which provides an extraordinary corrosion protection to the underlying substrate material.
  • metallic materials such as cold rolled steel, metallized steel, stainless steel, galvanized steel, aluminum etc are suitable.
  • the sheet metal is preferably pretreated chemically by usual methods such as pickling, phosphatising, chromating etc.
  • the layer or layers of paint- and lacquer material can consist of one primer layer and a second paint layer which can be pig ented or unpigmented.
  • a suitable combination is to use a pigmented layer of optional colour and then on top of this a clear plastic sheet is applied.
  • the temperature of the metal sheet is from 150 up to 300°C
  • the paint layer thickness must be at least 20 microns dry film to provide necessary thickness which allows both good adhesion and possibility to emboss.
  • the paint layer in its dried state must show a certain degree of thermoplasticity.
  • Bonder 1303 (a phosphatising agent from Metallgesellschaft
  • Second layer On the previous layer a pigmented polyvinyl ⁇ chloride plastisol paint (FJ220-2403 Coilon Plastisol Umbra from BIFAB, Marsta, Sweden) is applied to a thickness of 70 microns dry film by reverse roller coat, drying/curing at 205°C PMT.
  • FJ220-2403 Coilon Plastisol Umbra from BIFAB, Marsta, Sweden
  • Third layer Directly upon the previous hot layer, a clear plasticized plastic sheet of polyvinylchloride (Type 1951 from Gislaved AB, Sweden) and a thickness of 70 microns is applied.
  • Embossing After the application of the previous plastic sheet, the coated steel coil passes, without separate cooling, an embossing steel roller which produces a relief pattern and then cooling takes place.
  • Second layer On the previous layer a clear (unpig ented) polyvinylchloride plastisol (FJ220 Coilon Plastisol Clear, from BIFAB, Marsta, Sweden) is applied to a thickness of 200 microns dry film by reverse roller coat, drying/curing at 205°C PMT.
  • FJ220 Coilon Plastisol Clear from BIFAB, Marsta, Sweden
  • Third layer Directly upon the previous hot layer a soft hiding (pigmented) plastic sheet of polyvinylchloride (Type 1951 pigmented, from Gislaved AB, Sweden) with a thickness of 75 microns is applied.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Crushing And Grinding (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

A process for surface coating of materials with plane surfaces in which on the material with plane surface paint- and lacquer material(s) is(are) applied as wet paint in one or several layers, each layer being dried (cured) separately before the application of the next layer and where the total paint layer thickness is 40-300 microns, and then a plastic sheet is applied by lamination directly on top of the hot paint surface.

Description

Surface coating process
The invention relates to a process for surface coating of sub¬ strates with plane surfaces, such as coil or sheet materials of metals.
In the process paint- and lacquer materials are applied in one or several layers on the substrate with plane surface. This (these) layer(s) is (are) applied as wet paint layer(s), which in dried state will have a certain degree of thermoplasticity.
If several layers of paint- and lacquer materials are used, the first layer will be a primer coat, such as e.g. an epoxy-, acrylic- or phenolic paint.
As a second layer on the primer coat, a pigmented or un- pig ented paint layer may be applied. Examples of such suitable paint materials are fluorocarbon dispersions (PVF), PVC-plastisols, vinyl- or latex paints. Such wet paint is dried after application.
The paints are applied according to conventional techniques, such as roller coating, spray coating, curtain coating etc. The drying is also made with conventional methods, such as IR-tubes or convection heating.
After the paint layer or layers have been dried to a state of a certain degree of thermoplasticity, a plastic sheet or foil is applied directly upon the hot paint surface. The plastic sheet applied directly upon the hot paint surface by lamination can be of various pore-free suitable foil materials, such as PVC-sheet, PVF-sheet, thermoplastic acrylic sheet etc.
In the lamination an engraved pressure roller can be used to produce an embossing effect. Thereby it is possible, due to the underlying layer or layers of paint- and lacquer material, to obtain an embossed sheet surface. These layers have a total thickness of 40-300 microns which allows such embossing.
By the surface coating process according to the invention, a surface with extraordinary hardness and wear resistance is obtained and which, as mentioned above, may be embossed. Further, by means of the surface coating process according to the present invention, a layer is obtained which provides an extraordinary corrosion protection to the underlying substrate material.
Prior art
It is previously known to treat metal sheet (coil) by painting with a primer layer and apply a topcoat on top of this. However, only a limited degree of corrosion resistance of metal sheet is thereby obtained, due to a certain porosity in the layer materials.
It is also previously known to treat the surface of e.g. metal sheet by first applying an adhesive layer of 5-10 microns and then applying a plastic sheet. Even in this case, a limited corrosion resistance is obtained owing to the fact that adhesive layer is so thin. Furthermore it is not possible, as in the present invention, to emboss the plastic sheet by means of a pressure roller.
As materials with plane surfaces which can be treated with the surface coating process according to the present invention, metallic materials such as cold rolled steel, metallized steel, stainless steel, galvanized steel, aluminum etc are suitable.
In the coating of sheet metal materials, the sheet metal is preferably pretreated chemically by usual methods such as pickling, phosphatising, chromating etc.
The layer or layers of paint- and lacquer material can consist of one primer layer and a second paint layer which can be pig ented or unpigmented. A suitable combination is to use a pigmented layer of optional colour and then on top of this a clear plastic sheet is applied. Thus a great variety is possible concerning the appearance of the end product, and this as mentioned above, can be further enhanced by an embossing effect obtained by means of an engraved pressure roller used in the lamination of the plastic sheet.
In said lamination the temperature of the metal sheet is from 150 up to 300°C
As emphasized before one of the paint layers can be omitted thus using either only one primer layer or only one paint layer without any underlying primer layer it being observed, however, that the paint layer thickness must be at least 20 microns dry film to provide necessary thickness which allows both good adhesion and possibility to emboss. As mentioned above the paint layer in its dried state must show a certain degree of thermoplasticity.
In the process according to the invention a lamination without the use of any special adhesive is attained in one and the same process and different colours, gloss degrees and surface textures can simply and cheaply be achieved without the necessity of keeping a large assortment of different plastic sheets in store. The invention is more closely illustrated in the following examples:
Example 1
In an conventional coil-coating line the following is applied on 0.8 mm hot galvanized steel, chemically pretreated with
Bonder 1303 (a phosphatising agent from Metallgesellschaft
GmbH, West Germany):
First layer: An acrylic primer (EE212-1002 Coilon Primer from
BIFAB, Marsta, Sweden) is applied by reverse roller coat to a thickness of 6-8 microns dry film, drying/curing at 225°C PMT
(peak metal temperature) and then cooled.
Second layer: On the previous layer a pigmented polyvinyl¬ chloride plastisol paint (FJ220-2403 Coilon Plastisol Umbra from BIFAB, Marsta, Sweden) is applied to a thickness of 70 microns dry film by reverse roller coat, drying/curing at 205°C PMT.
Third layer: Directly upon the previous hot layer, a clear plasticized plastic sheet of polyvinylchloride (Type 1951 from Gislaved AB, Sweden) and a thickness of 70 microns is applied.
Embossing: After the application of the previous plastic sheet, the coated steel coil passes, without separate cooling, an embossing steel roller which produces a relief pattern and then cooling takes place.
Example 2
The same as Example 1 with the following exception:
Third layer: As plastic sheet is used a clear polyacrylic sheet (Type 2/1033 from Alkor GmbH, West Germany) with a thickness of 60 microns. Example 3
The same as Example 1 with the following exceptions:
Second layer: On the previous layer a clear (unpig ented) polyvinylchloride plastisol (FJ220 Coilon Plastisol Clear, from BIFAB, Marsta, Sweden) is applied to a thickness of 200 microns dry film by reverse roller coat, drying/curing at 205°C PMT.
Third layer: Directly upon the previous hot layer a soft hiding (pigmented) plastic sheet of polyvinylchloride (Type 1951 pigmented, from Gislaved AB, Sweden) with a thickness of 75 microns is applied.

Claims

1. A process for surface coating of materials with plane surfaces characterized in that on the material with the plane surface embossible paint- and lacquer material(s) in form of wet paint is (are) applied in one or several layers each layer being dried (cured) before the application of the next layer, and that the total thickness of the layers is from 40-300 microns, and then a plastic sheet by lamination is applied directly on the hot paint surface.
2. A process according to claim 1, characterized in that a primer coat is applied as the first layer.
3. A process according to claim 1 or 2, characterized in that a pigmented paint material is applied as paint layer.
4. A process according to claim 1 or 2 , characterized in that an unpigmented lacquer material is applied as paint layer.
5. A process according to any of the preceding claims, characterized in that the sheet which is laminated to the top paint layer consists of pore free sheet material for instance PVC-sheet, PVF-sheet, thermoplastic acrylic resin etc.
6. A process according to any of the preceding claims, characterized in that the material with plane surfaces consists of coil- or sheet material of metal.
7. A process according to any of the preceding claims, characterized in that an embossed sheet surface is produced by carrying out the lamination of the sheet to the paint surface by means of an engraved pressure roller.
PCT/SE1985/000355 1984-09-18 1985-09-17 Surface coating process WO1986001772A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8585904891T DE3571415D1 (en) 1984-09-18 1985-09-17 Surface coating process
AT85904891T ATE44496T1 (en) 1984-09-18 1985-09-17 COATING PROCESSES OF SURFACES.
DK229086A DK162707C (en) 1984-09-18 1986-05-16 PROCEDURE FOR SURFACE COATING
FI870944A FI85568C (en) 1984-09-18 1987-03-04 YTBEHANDLINGSFOERFARANDE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8404679-6 1984-09-18
SE8404679A SE8404679D0 (en) 1984-09-18 1984-09-18 YTBEHANDLINGSFORFARANDE

Publications (1)

Publication Number Publication Date
WO1986001772A1 true WO1986001772A1 (en) 1986-03-27

Family

ID=20357056

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1985/000355 WO1986001772A1 (en) 1984-09-18 1985-09-17 Surface coating process

Country Status (7)

Country Link
EP (1) EP0233179B1 (en)
DE (1) DE3571415D1 (en)
DK (1) DK162707C (en)
FI (1) FI85568C (en)
NO (1) NO170140C (en)
SE (1) SE8404679D0 (en)
WO (1) WO1986001772A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591531A1 (en) * 1992-04-03 1994-04-13 Nippon Carbide Kogyo Kabushiki Kaisha Fluororesin laminated metal and method of manufacturing said metal
WO1997006955A1 (en) * 1995-08-11 1997-02-27 Basf Lacke Und Farben Aktiengesellschaft Device for the coating of metal strips
EP0686501B1 (en) * 1994-05-12 1999-11-24 Siquam S.P.A. A process for multilayer coating sheet metal strips in coil or plate form, and thus obtained product
WO2021175937A1 (en) 2020-03-03 2021-09-10 Lamcoatings B.V. Coil coating process
US11203189B2 (en) 2016-06-15 2021-12-21 Bemis Company, Inc. Heat-seal lid with non-heat sealing layer and hydrophobic overcoat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078179A (en) * 1958-11-04 1963-02-19 Firestone Tire & Rubber Co Process of applying coating of unplasticized polyvinyl chloride resin to a substrate
SE363995B (en) * 1967-08-29 1974-02-11 Matsushita Electric Works Ltd
DE2654667A1 (en) * 1975-12-03 1977-06-16 Sofrem LIGHT ALLOY COMPOSITE
DE2916723C2 (en) * 1978-06-06 1981-10-01 Fa. Leonhard Kurz, 8510 Fürth Hot stamping foil with a metal layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078179A (en) * 1958-11-04 1963-02-19 Firestone Tire & Rubber Co Process of applying coating of unplasticized polyvinyl chloride resin to a substrate
SE363995B (en) * 1967-08-29 1974-02-11 Matsushita Electric Works Ltd
DE2654667A1 (en) * 1975-12-03 1977-06-16 Sofrem LIGHT ALLOY COMPOSITE
DE2916723C2 (en) * 1978-06-06 1981-10-01 Fa. Leonhard Kurz, 8510 Fürth Hot stamping foil with a metal layer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591531A1 (en) * 1992-04-03 1994-04-13 Nippon Carbide Kogyo Kabushiki Kaisha Fluororesin laminated metal and method of manufacturing said metal
EP0591531A4 (en) * 1992-04-03 1994-04-20 Nippon Carbide Kogyo Kabushiki Kaisha
EP0686501B1 (en) * 1994-05-12 1999-11-24 Siquam S.P.A. A process for multilayer coating sheet metal strips in coil or plate form, and thus obtained product
WO1997006955A1 (en) * 1995-08-11 1997-02-27 Basf Lacke Und Farben Aktiengesellschaft Device for the coating of metal strips
US6083336A (en) * 1995-08-11 2000-07-04 Basf Coatings Ag Device for the coating of metal strips
US11203189B2 (en) 2016-06-15 2021-12-21 Bemis Company, Inc. Heat-seal lid with non-heat sealing layer and hydrophobic overcoat
WO2021175937A1 (en) 2020-03-03 2021-09-10 Lamcoatings B.V. Coil coating process
NL2025038B1 (en) * 2020-03-03 2021-10-14 Lamcoatings B V Coil coating process

Also Published As

Publication number Publication date
FI870944A0 (en) 1987-03-04
DK162707C (en) 1992-04-21
NO170140C (en) 1992-09-16
DK162707B (en) 1991-12-02
EP0233179B1 (en) 1989-07-12
FI870944A (en) 1987-03-04
NO170140B (en) 1992-06-09
DK229086D0 (en) 1986-05-16
FI85568B (en) 1992-01-31
EP0233179A1 (en) 1987-08-26
SE8404679D0 (en) 1984-09-18
FI85568C (en) 1992-05-11
DK229086A (en) 1986-05-16
NO861975L (en) 1986-05-16
DE3571415D1 (en) 1989-08-17

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