WO2020182538A1 - Produit d'acier stratifié - Google Patents

Produit d'acier stratifié Download PDF

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Publication number
WO2020182538A1
WO2020182538A1 PCT/EP2020/055547 EP2020055547W WO2020182538A1 WO 2020182538 A1 WO2020182538 A1 WO 2020182538A1 EP 2020055547 W EP2020055547 W EP 2020055547W WO 2020182538 A1 WO2020182538 A1 WO 2020182538A1
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WO
WIPO (PCT)
Prior art keywords
zinc alloy
alloy coated
steel strip
coated steel
steel product
Prior art date
Application number
PCT/EP2020/055547
Other languages
English (en)
Inventor
Berend BOELEN
Bart VAN VLIET
Jim Wilhelmus HOEBEN
Original Assignee
Tata Steel Ijmuiden B.V.
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 Tata Steel Ijmuiden B.V. filed Critical Tata Steel Ijmuiden B.V.
Priority to EP20706550.9A priority Critical patent/EP3938203A1/fr
Publication of WO2020182538A1 publication Critical patent/WO2020182538A1/fr

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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
    • 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
    • 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
    • B32B15/082—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 comprising vinyl resins; comprising acrylic resins
    • 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
    • B32B15/085—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 comprising polyolefins
    • 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
    • B32B15/088—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 comprising polyamides
    • 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
    • B32B15/09—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 comprising polyesters
    • 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • 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
    • B32B2255/28—Multiple coating on one surface
    • 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/516—Oriented mono-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/752—Corrosion inhibitor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B32B2419/06—Roofs, roof membranes
    • 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
    • B32B2479/00—Furniture
    • 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
    • B32B2607/02—Wall papers, wall coverings

Definitions

  • the invention relates to a laminated steel product for building and construction applications, comprising a hot dip galvanised zinc alloy coated steel strip having a thickness between 0,4 and 1 ,5 mm and a thermoplastic polymer layer laminated on one or both sides of the zinc alloy coated steel strip.
  • the invention is also related to a method for producing such a laminated steel product.
  • WO 2014/114370 describes a laminated steel product for cans. These products use a very thin zinc coated steel strip, between 0,1 and 0,5 mm thick, which is suitable for making packaging materials. Further, the surface of the zinc coated steel is temper rolled in the rolling department to improve the adhesion of the polymer layer to the zinc coated steel strip.
  • WO 2012/146654 describes the adhesion of the polymer layer to a metal strip by first melting the polymer granules in an extruder and passing the molten polymer through one or more dies or calendars to form the polymer film. After that the laminating step takes place. This process is also developed for packaging purposes and therefore uses very thin metal strips in the order of 0,1 to 0,3 mm.
  • US 9186875 discloses a process for applying a polyester onto a metal strip which is generally useful for can making. Described is also the application in building and construction products, but the skilled person is left in the dark when it comes down to the specific measures that need to be taken to live up to the specifications for this purpose.
  • a surface energy treatment is applied to increase the surface energy by heating, ozone treatment, ultra-high frequency electrical discharge, UV or laser bombardment.
  • WO 2017/174345 discloses a process aimed at the production of a laminated steel product for packaging, like cans or containers.
  • the metal strip is laminated on both sides with a thermoplastic polymer.
  • the polymers described are suitable for can making.
  • Zinc alloy coated steel has far worse adhesive properties than tin coated steels or chromium coated steels, setting yet another challenge for building and construction applications.
  • the adhesion of a polymer to this zinc alloy coated steel for building and construction applications is a major challenge which so far only could only properly be solved by using a specially formulated and expensive adhesive which must be applied in a relatively thick layer of several micro meters on the zinc alloy coated steel. It is clear to the skilled person that zinc alloy coating in this context also comprises zinc coating without alloys.
  • the current invention relates to solve these problems of the prior art and provide a laminated steel product that is strong, sustainable, lasts for decades and can withstand all the weather elements. Furthermore, a material for building and construction applications is provided which can be produced with higher line speeds, has better forming properties and can be produces without using volatile organic chemicals.
  • the laminated steel product is provided with a corrosion inhibiting and adhesive layer between the zinc alloy coated steel strip and the thermoplastic polymer layer on one or both sides of the zinc alloy coated steel strip.
  • This corrosion inhibiting and adhesive layer can be applied to a thickness in the order of 1 to 30 nanometer, preferably between 5 and 20 nanometer and preferably 10 nanometer. This layer is a lot thinner than the previously applied adhesive layer, so less material is needed and therefore this is more environmentally friendly.
  • a suitable corrosion inhibiting and adhesive layer for the zinc alloy coated steel strip is made from Bonderite M-NT 10456 CT1080 RWE, which is available from Henkel. This product is sold as a corrosion inhibiting material, but the inventors found that this material has also surprisingly good adhesion properties.
  • the obtained product has very beneficial properties for use in outdoor building and construction building applications such as wall cladding and roofing systems. But also indoor uses are possible, as the requirements for indoor use are less strict.
  • the thermoplastic polymer layer can be chosen to a specific thickness and material to improve the corrosion resistance, but also the aesthetic possibilities are widened as the thermoplastic polymer films can come in all colours of the rainbow and could be applied with a design already printed on or in the thermoplastic polymer film saving time during the building process. Further, no curing on the coil needs to take place like is the case with painted steel products and there are no fluid effects (e.g. ribbing) that determine the application speed, like in the painting process. So the speed of producing these products is also considerably increased.
  • the polymer film has better elastic properties than paint, making the laminated steel product more sustainable than the painted versions of the prior art.
  • thermoplastic polymer layer is a machine direction oriented (MDO) film.
  • MDO machine direction oriented
  • the formed laminated steel product could be also used for other indoor applications, such as white and brown goods, furniture steels and sandwich panels without changing the basic concept.
  • a primer layer is provided on top of the corrosion inhibiting and adhesive layer on one or both sides of the zinc alloy coated steel strip. This is beneficial as it gives an even better corrosion protection to the product, further increasing the durability. Another benefit is that the formation properties further improve, giving the architect or designer even wider technical possibilities for an aesthetically pleasing design, which is a rare phenomenon these days.
  • the primers that have shown to be beneficial are polyester or polyester-polyurethane (for example CP48, available from Akzo Nobel, formerly BASF) based. Also beneficial is that a primer masks the metal“colour”, so the options for design improve as well with the application of a primer layer.
  • a top-coat layer is provided on top of the thermoplastic polymer layer on one or both sides of the zinc alloy coated steel strip. This will protect all the other layers described earlier and improve the corrosion resistance and the appearance in a durable manner. To this layer colours could be added, but also a see-through top-coating could be applied, depending on the specific technical requirements.
  • a paint layer is provided on one or both sides of the zinc alloy coated steel strip. It may be clear that adding a paint layer will further improve the corrosion inhibition properties. However, it also brings more options for the architects and designers, such as adding appealing colours or patterns. Another preferred option is the addition of a light sensitive paint layer that glows in the dark adding to the well being and comfort of people during the night time hours and create a more safe environment. This option would be very beneficial as it will need less energy consumption, since less electric light is needed to light the buildings at night.
  • a back-coat layer is provided on the intended back side of the laminated steel product.
  • the intended back side of the laminated steel product is usually protected more against all the influences mentioned earlier since it is not facing outward to the hostile environment. Therefore, there may be less need to apply a layer having the corrosion resistance properties compared to the layers applied on the front side.
  • a back-coat layer can be chosen according to the specifications needed for the specific application adding to the flexibility of the possibilities with the laminated steel product. This layer may also be a thermoplastic polymer layer.
  • one or more further layers are provided on one or both sides of the zinc alloy coated steel strip.
  • Layers could be added that have special properties regarding for example isolation or light reflection.
  • a layer with light reflecting flakes is imaginable which gives the laminated steel product a distinctive appearance which could then act as a landmark for people on the streets, but also for airline pilots as a striking beacon on the ground.
  • this further layer could for example have a mirror effect, for instance in silver, or even gold. The latter could be the preferred effect for people that have more money than taste.
  • Another option is that it could also be a layer that reacts to the level of (day)light present and/or changes colour when desired.
  • a zinc alloy coating on the zinc alloy coated steel comprises at least 95% of zinc. This has the benefit of the laminated steel product being protected against corrosion and providing a good base for the laminated steel product.
  • the zinc alloy coating of the zinc alloy coated steel strip comprises 0,3 - 2,3 % aluminium and 0,6 - 2,3 % magnesium, with the remainder being zinc, and unavoidable impurities.
  • a suitable zinc alloy coating for the steel product is MagiZinc ®, giving excellent results and which is a product of Tata Steel which is mainly used in automotive steels. Automotive steels also need to be protected against corrosion as motorcars and other vehicles are exposed to the elements of all weather conditions mentioned earlier and salt on the roads in winter time.
  • the zinc alloy coating comprises 0,3 - 4,0 % magnesium, 0,3 - 6,0 % aluminium, the rest being zinc, and unavoidable impurities.
  • the zinc alloy coating comprises 0,3 - 2,3 % magnesium, 0,6 - 2,3 % aluminium, the rest being zinc, and unavoidable impurities. More preferably the zinc alloy coating comprises 1 ,6 - 2,3 % magnesium, 1 ,6 - 2,3 % aluminium, the rest being zinc, and unavoidable impurities.
  • the zinc alloy coating of the zinc alloy coated steel strip comprises up to 0,5 % aluminium and more than 99,5 % zinc, and unavoidable impurities.
  • thermoplastic polymer layer is a layer of polyethylene terephthalate or polypropylene or polyamide or polyethylene or polyvinylchloride or polytetrafluorethylene or polyethylene 2,5-furandicarboxylate or polyvinylidene fluoride or a combination thereof.
  • the zinc alloy coated steel strip is between 1 ,0 and 1 ,5 mm thick. It may be clear that the zinc alloy coated steel strip has the best available properties for the building and construction applications of this invention, as explained earlier. The thickness is needed as it is used as a building or construction material for bringing the necessary strength.
  • the zinc alloy coated steep strip has a minimum thickness of 0,6 mm. More preferably the zinc alloy coated steep strip has a minimum thickness of 0,8 mm. Even more preferably the zinc alloy coated steep strip has a minimum thickness of 1 ,0 mm.
  • the zinc alloy coated steep strip has a maximum thickness of 1 ,3 mm. More preferably the zinc alloy coated steep strip has a maximum thickness of 1 ,4 mm. Even more preferably the zinc alloy coated steep strip has a maximum thickness of 1 ,5 mm.
  • the method comprises providing a hot dip galvanised zinc alloy coated steel strip having a thickness between 0,4 and 1 ,5 mm and laminating a thermoplastic polymer layer on one or both sides of the zinc alloy coated steel strip.
  • the zinc alloy coated steel strip is provided with a corrosion inhibiting and adhesive layer.
  • the thermoplastic polymer layer is produced as a machine direction oriented (MDO) film. This is a film that is oriented in a uniaxial manner and has improved stiffness and barrier properties.
  • MDO machine direction oriented
  • FIG. 1 shows the product according to the invention in its most basic form
  • FIG. 2 shows the product with a primer layer
  • FIG. 1 shows the product according to the invention in its most basic form.
  • a laminated steel product (1) which is adjusted for building and construction applications, comprises a hot dip galvanised zinc alloy coated steel strip (2) having a thickness between 0,4 and 1 ,5 mm and a thermoplastic polymer layer (3) laminated on, in this example, one side of the zinc alloy coated steel strip (2).
  • the thermoplastic polymer layer (3) could also be applied on both sides of the zinc alloy coated steel strip (2).
  • a corrosion inhibiting and adhesive layer (4) is provided between the zinc alloy coated steel strip (2) and the thermoplastic polymer layer (3) .
  • the corrosion inhibiting and adhesive layer (4) has both corrosion inhibiting properties and surprisingly good adhesive properties. Therefore a separate adhesive is not necessary. This corrosion inhibiting and adhesive layer (4) could also be applied on both sides of the zinc alloy coated steel strip (2).
  • Figure 2 shows the product with a primer layer (5).
  • the primer layer (5) could be provided on one or both sides of the laminated steel product (1).
  • Figure 3 shows the product with a top-coat layer (6) on top of the one or more thermoplastic polymer layers (3).
  • it is provided on top of the thermoplastic polymer layer (3) on one side, but could also be added to the thermoplastic polymer layer (3) and any other layer, like the primer layer (5), paint layer (7), back-coat layer (8) and further layer (9) on one or on both sides of the laminated steel product (1).
  • Figure 4 shows the product with a paint layer (7).
  • it is provided on top of the top-coat layer (6) on one side, but could also be added on top of any other layer present and on one or both sides of the laminated steel product (1).
  • Figure 5 shows the product with symmetrical layering.
  • the laminated steel product comprises the hot dip galvanised zinc alloy coated steel strip (2) which has a corrosion inhibiting and adhesive layer (4) on both sides of the zinc alloy coated steel strip (2).
  • the thermoplastic polymer layer (3) is added on both sides of the zinc alloy coated steel strip (2).
  • both sides of the laminated steel product (1) could be symmetrical, meaning layering on both sides of the zinc alloy coated steel strip (2) are the same. But it could also by asymmetrical, meaning the layers on each side are different. This all depends on the specific application of the laminated steel product and the specifications set therefore.
  • Figure 6 shows the product with an back-coat layer (8),
  • this back-coat layer (8) is provided on top of the corrosion inhibiting and adhesive layer (4), but could also be provided on top on the zinc alloy coated steel strip (2).
  • this example shows the optional primer layer (5) on top of the thermoplastic polymer layer (3).
  • Figure 7 shows the product with a further layer (9).
  • the further layer (9) is provided on one side of the zinc alloy coated steel strip (2) but could also be present on both sides.
  • the figure shows the further layer (9) on top of the optional primer layer (5). But this further layer (9) could be on top of other layers as well, like the corrosion inhibiting and adhesive layer (4) or the thermoplastic polymer layer (3).

Landscapes

  • Laminated Bodies (AREA)

Abstract

L'invention concerne un produit d'acier stratifié destiné à des applications de fabrication et de construction, comprenant une bande d'acier revêtue d'alliage de zinc galvanisée par immersion à chaud ayant une épaisseur comprise entre 0,4 et 1,5 mm et une couche de polymère thermoplastique stratifiée sur un ou les deux côtés de la bande d'acier revêtue d'alliage de zinc, le produit d'acier stratifié étant pourvu d'une couche d'inhibition de corrosion et d'adhérence entre la bande d'acier revêtue d'alliage de zinc et la couche de polymère thermoplastique sur un ou les deux côtés de la bande d'acier revêtue d'alliage de zinc.
PCT/EP2020/055547 2019-03-14 2020-03-03 Produit d'acier stratifié WO2020182538A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20706550.9A EP3938203A1 (fr) 2019-03-14 2020-03-03 Produit d'acier stratifié

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19162921 2019-03-14
EP19162921.1 2019-03-14

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Publication Number Publication Date
WO2020182538A1 true WO2020182538A1 (fr) 2020-09-17

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WO (1) WO2020182538A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067060A1 (fr) * 1981-06-09 1982-12-15 Taiyo Steel Co., Ltd: Bande métallique revêtue et procédé pour sa fabrication
KR101142766B1 (ko) * 2011-09-29 2012-05-18 주식회사 화인텍 열가소성 폴리올레핀계 시트가 일체로 구비된 아연 도금 강판 및 그의 제조방법
WO2012146654A1 (fr) 2011-04-28 2012-11-01 Tata Steel Ijmuiden Bv Procédé permettant de produire un substrat de métal revêtu de polymère et substrat de bande de métal pourvu d'un revêtement de polymère
WO2013083292A1 (fr) * 2011-12-08 2013-06-13 Tata Steel Nederland Technology Bv Bande d'acier à revêtement organique
WO2014114370A1 (fr) 2013-01-25 2014-07-31 Thyssenkrupp Rasselstein Gmbh Procédé de fabrication de tôle zinguée fine ou extra fine à haute résistance à la corrosion
US9186875B1 (en) 2005-09-13 2015-11-17 Mark V. Loen Processing improvements in applying polyester onto a metal substrate
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