阅读说明：本技术 覆膜金属板及其制造方法 (Film-coated metal plate and method for producing same ) 是由 王同心 胡江冰 吕剑伟 薛群山 刘元军 沈一春 于 2019-11-12 设计创作，主要内容包括：一种覆膜金属板及其制造方法,所述覆膜金属板用于建筑或光伏系统中,包括基材层以及覆设于所述基材层一表面的第一复合层,所述第一复合层与所述基材层通过热压的方式直接贴合,所述第一复合层主要由聚偏氟乙烯膜与贴合膜层以粘胶剂复合构成,所述贴合膜层远离所述聚偏氟乙烯膜的表面平整且致密贴合于所述基材层的表面。上述覆膜金属板,避免了胶黏剂的使用,具有优异的耐腐蚀性、耐光性、反射性能及自清洁性能,且本发明的覆膜金属板的制造方法简单,易于大批量生产。(The laminated metal plate is used in a building or a photovoltaic system and comprises a base material layer and a first composite layer covered on one surface of the base material layer, wherein the first composite layer is directly attached to the base material layer in a hot pressing mode, the first composite layer is mainly formed by compounding a polyvinylidene fluoride film and an attaching film layer with an adhesive, and the attaching film layer is far away from the polyvinylidene fluoride film, and the surface of the polyvinylidene fluoride film is flat and tightly attached to the surface of the base material layer. The film-coated metal plate avoids the use of adhesives, has excellent corrosion resistance, light resistance, reflection performance and self-cleaning performance, and is simple in manufacturing method and easy for mass production.)

1. The utility model provides a tectorial membrane metal sheet, includes the substrate layer and covers and locate the first composite bed on a surface of substrate layer, its characterized in that: the first composite layer is directly attached to the base material layer in a hot pressing mode, the first composite layer mainly comprises a polyvinylidene fluoride film and an attaching film layer which are compounded by an adhesive, and the attaching film layer is far away from the surface of the polyvinylidene fluoride film, which is smooth and compactly attached to the surface of the base material layer.

2. The coated metal sheet of claim 1, wherein: the first composite layer is obtained by coating adhesive on the surface of the polyvinylidene fluoride film and coating the polyvinylidene fluoride film and then curing and forming the polyvinylidene fluoride film, wherein the curing and forming comprises forming in a hot pressing mode.

3. The coated metal sheet of claim 2, wherein: the first composite layer has a thickness of 55 to 240 μm.

4. The coated metal sheet of claim 1, wherein: the laminated metal plate further comprises a second composite layer, and the first composite layer, the substrate layer and the second composite layer are sequentially arranged.

5. The coated metal sheet of claim 4, wherein: the second composite layer is mainly formed by compounding a second composite film and a bonding film layer by using an adhesive.

6. The coated metal sheet of claim 1, wherein: the polyvinylidene fluoride film comprises 40-80 parts by weight of a polyvinylidene fluoride raw material, 10-30 parts by weight of titanium dioxide, 1-10 parts by weight of polymethyl methacrylate, 5-30 parts by weight of matte powder, 0.01-3 parts by weight of an antioxidant and 0.1-2 parts by weight of an anti-ultraviolet agent.

7. The coated metal sheet of claim 1, wherein: the thickness of the polyvinylidene fluoride film is 20 to 35 μm.

8. The coated metal sheet of claim 1, wherein: the adhesive is composed of two-component polyurethane and acrylate.

9. The coated metal sheet of claim 1, wherein: the laminated film layer is a polymer adhesive film, and is one of polyethylene, polypropylene, ethylene acrylic acid copolymer and ethylene-vinyl acetate copolymer.

10. A method for manufacturing a coated metal sheet as claimed in any one of claims 1 to 6, comprising the steps of:

s1, unwinding: putting the polyvinylidene fluoride film into a production line through a unwinding device;

s2, sizing: coating the adhesive on one side surface of the polyvinylidene fluoride film by adopting a coating method;

s3, drying: putting the coated polyvinylidene fluoride film into an oven for drying, and forming an adhesive layer on the surface of the polyvinylidene fluoride film;

s4, bonding: placing the laminating film layer on the surface of the adhesive layer, and laminating in a hot pressing mode to obtain a first composite layer;

s5, compounding: and heating the substrate layer, and laminating the first composite layer on the substrate layer in a hot pressing mode.

Technical Field

The invention relates to the technical field of metal plate preparation, in particular to a film-coated metal plate and a manufacturing method thereof.

Background

The metal plate is widely applied to roofs and walls of industrial plants as a building material, but when the metal plate is applied to wallboards or roof panels in industries such as metallurgy, chemical engineering, livestock husbandry and the like, the metal plate is easy to corrode. For solving this problem, the coating metal sheet is by wide application, but the coating metal sheet has the difficult washing of greasy dirt, does not resist acid and alkali corrosion scheduling problem, simultaneously because the coating metal sheet reflectivity is low, can make the interior temperature of factory building be higher than outdoor temperature in summer to can produce the harm to the instrument in the factory building. Along with the application of light energy, the photovoltaic power generation system is established as the building that the large tracts of land was concentrated to the industry factory building, accessible on the roof, satisfies the power consumption of factory building, reduces the cost, increases the added value on roof, but the tectorial membrane material reflectivity of using at present is low, can't have the gain effect to photovoltaic power generation system, and does not have apparent effect to cooling in the factory building when summer.

Disclosure of Invention

In view of the above, it is desirable to provide a coated metal sheet having excellent corrosion resistance, light resistance, reflection performance and self-cleaning performance.

The laminated metal plate comprises a substrate layer and a first composite layer covered on one surface of the substrate layer, wherein the first composite layer is directly attached to the substrate layer in a hot pressing mode, the first composite layer is mainly formed by compounding a polyvinylidene fluoride film and an attaching film layer with an adhesive, and the surface of the attaching film layer, which is far away from the polyvinylidene fluoride film, is flat and is attached to the surface of the substrate layer in a dense mode.

Furthermore, the first composite layer is obtained by coating adhesive on the surface of the polyvinylidene fluoride membrane and coating the polyvinylidene fluoride membrane and then curing and forming the polyvinylidene fluoride membrane after the polyvinylidene fluoride membrane is attached to the membrane layer, wherein the curing and forming comprises forming in a hot pressing mode.

Further, the first composite layer has a thickness of 55 to 240 μm.

Further, the laminated metal plate further comprises a second composite layer, and the first composite layer, the substrate layer and the second composite layer are sequentially arranged.

Furthermore, the second composite layer is mainly formed by compounding a second composite film and a bonding film layer by using an adhesive.

Further, the polyvinylidene fluoride membrane comprises 40-80 parts by weight of a polyvinylidene fluoride raw material, 10-30 parts by weight of titanium dioxide, 1-10 parts by weight of polymethyl methacrylate, 5-30 parts by weight of matte powder, 0.01-3 parts by weight of an antioxidant and 0.1-2 parts by weight of an anti-ultraviolet agent.

Further, the thickness of the polyvinylidene fluoride membrane is 20 μm to 35 μm.

Furthermore, the adhesive is composed of two-component polyurethane and acrylate.

Further, the attaching film layer is a polymer adhesive film, and the attaching film layer is one of polyethylene, polypropylene, ethylene acrylic acid copolymer and ethylene-vinyl acetate copolymer.

The invention provides a manufacturing method of the film-coated metal plate, which comprises the following steps:

s1, unwinding: putting the polyvinylidene fluoride film into a production line through a unwinding device;

s2, sizing: coating the adhesive on one side surface of the polyvinylidene fluoride film by adopting a coating method;

s3, drying: putting the coated polyvinylidene fluoride film into an oven for drying, and forming an adhesive layer on the surface of the polyvinylidene fluoride film;

s4, bonding: placing the laminating film layer on the surface of the adhesive layer, and laminating in a hot pressing mode to obtain a first composite layer;

s5, compounding: and heating the substrate layer, and laminating the first composite layer on the substrate layer in a hot pressing mode.

Compared with the prior art, the laminated metal plate adopts the polyvinylidene fluoride film, has corrosion resistance, stain resistance, acid resistance, alkali resistance and good reflection performance, avoids the use of an adhesive between the first composite layer and the base material layer, and ensures that the surface of the first composite layer contacted with the base material layer is uniform and flat.

Drawings

Fig. 1 is a schematic structural view of a film-coated metal plate according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a first composite layer according to an embodiment of the invention.

Fig. 3 is a schematic structural view of a film-coated metal plate according to another embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a second composite layer according to another embodiment of the present invention.

FIG. 5 is a flow chart illustrating a method for manufacturing a coated metal plate according to an embodiment of the present invention.

Description of the main elements

Film-coated metal plate	100
		Substrate layer	10
First surface	101
		Second surface	102
The first composite layer	20
		Polyvinylidene fluoride membrane	21
Laminated film layer	22、24
		Adhesive agent	23
Second composite layer	30
		Second composite film	31

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the coated metal sheet 100 is used as a building material for industrial plants, particularly for high-corrosion plants and roofing materials for photovoltaic power generation. The laminated metal plate 100 includes a substrate layer 10 and a first composite layer 20 disposed on one surface of the substrate layer 10.

The substrate layer 10 has a first surface 101 and a second surface 102 opposite to each other, specifically, the first composite layer 20 is disposed on the first surface 101, the substrate layer 10 is a metal plate, and may be a steel plate, a galvanized steel plate, an aluminum plate, or the like, and the type of the substrate layer 10 may be selected according to actual needs by the substrate layer 10. In one embodiment, the substrate layer 10 is an aluminum plate.

Referring to fig. 2, the first composite layer 20 is mainly formed by compounding a polyvinylidene fluoride film 21 and a bonding film layer 22 with an adhesive 23, and the polyvinylidene fluoride film 21, the adhesive 23 and the bonding film layer 22 are sequentially arranged. Specifically, the first composite layer 20 is obtained by coating an adhesive 23 on the surface of the polyvinylidene fluoride film 21, covering the attaching film layer 22, and then performing curing molding, wherein the curing molding includes hot-press molding, and the process is simple. The thickness of the polyvinylidene fluoride film 21 is 20-35 μm, specifically, the polyvinylidene fluoride film 21 comprises 40-80 parts by weight of a polyvinylidene fluoride raw material, 10-30 parts by weight of titanium dioxide, 1-10 parts by weight of polymethyl methacrylate, 5-30 parts by weight of matte powder, 0.01-3 parts by weight of an antioxidant and 0.1-2 parts by weight of an anti-ultraviolet agent, and the polyvinylidene fluoride film 21 has excellent corrosion resistance, light aging resistance and self-cleaning performance, and simultaneously has extremely high diffuse reflectance so that a large amount of light energy is reflected. The bonding film layer 22 is a polymer adhesive film, and specifically, the bonding film layer 22 is one of PE (polyethylene), PP (polypropylene), EAA (ethylene acrylic acid copolymer), and EVA (ethylene-vinyl acetate copolymer). In one embodiment, the conformable film layer 22 is PE (polyethylene). The attaching film layer 22 is attached to one side of the polyvinylidene fluoride film 21 by hot pressing. The surface of the attaching film layer 22, which is far away from the polyvinylidene fluoride film 21, is flat and is attached to the surface of the substrate layer 10 compactly. The thickness of the attaching film layer 22 is 35 μm to 200 μm, and the thickness of the first composite layer is 55 μm to 240 μm. In one embodiment, the adhesive 23 is composed of two-component polyurethane and acrylate, and is coated on the polyvinylidene fluoride film 21 near the laminating film layer 22 by a coating method.

Referring to fig. 3 and 4, the laminated metal plate 100 includes a first composite layer 20, a substrate layer 10, and a second composite layer 30 in sequence. The first composite layer 20 overlies the first surface 101 and the second composite layer 30 overlies the second surface 102. The second composite layer 30 is mainly formed by compounding a second composite film 31 and a bonding film layer 24 by using an adhesive 23, specifically, the bonding film layer 22 is covered on the first surface 101, the bonding film layer 24 is covered on the second surface 102, the second composite film 31 is made of PET (polyethylene terephthalate), PVC (vinyl chloride monomer), PTFE (polytetrafluoroethylene), PVDF (polyvinylidene fluoride), and PVF (polyvinyl fluoride), and an appropriate film material can be selected according to actual needs from the second composite film 31. In one embodiment, the second composite film 31 is made of PET (polyethylene terephthalate). In other embodiments, the second composite layer 30 may be replaced with the first composite layer or other functional layers.

Referring to fig. 5, a method for manufacturing the film-coated metal plate 100 according to an embodiment of the present invention includes the following steps:

s1, unwinding: putting the polyvinylidene fluoride film into a production line through a unwinding device;

specifically, the thickness of the vinylidene fluoride film ranges from 20 μm to 35 μm.

S2, sizing: coating the adhesive on one side surface of the polyvinylidene fluoride film by adopting a coating method;

specifically, the adhesive adopts bi-component polyurethane and acrylate.

S3, drying: putting the coated polyvinylidene fluoride film into an oven for drying, and forming an adhesive layer on the surface of the polyvinylidene fluoride film;

s4, bonding: placing the laminating film layer on the surface of the adhesive layer, and laminating in a hot pressing mode to obtain a first composite layer;

specifically, the thickness of the attaching film layer is 35-200 μm, and the hot pressing temperature is 50-90 ℃;

s5, compounding: heating the substrate layer, and laminating the first composite layer on the substrate layer in a hot pressing mode;

specifically, the first composite layer is bonded to the heated substrate layer in a hot pressing mode of a rubber roller and a steel roller, and the hot pressing temperature is 110-180 ℃.

The laminated metal plate 100 adopts PVDF (polyvinylidene fluoride film), has corrosion resistance, wear resistance, stain resistance, acid and alkali resistance, aging resistance, self-cleaning performance and extremely high diffuse reflectance, and can reflect a large amount of light energy when used as a roof material for photovoltaic power generation, increase the efficiency of photovoltaic power generation and reduce the temperature in a factory building. Meanwhile, the first composite layer and the second composite layer are compounded on two sides of the base material layer in a hot pressing mode, so that the use of an adhesive is avoided, the surfaces of the first composite layer and the second composite layer, which are in contact with the base material layer, are uniform and flat, and the process requirement is low.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.