DK176881B1 - Process for making laminated metal sheet - Google Patents

Description

1 DK 176881 B1 PROCEDURE FOR MANUFACTURING LAMINATED METAL PLATE The prior art

The present invention relates to a method of making laminated metal sheets, especially to panels, cabinets and the like.

Metal sheets are used in the industry as doors, walls and floors for the manufacture of refrigerators, for example. In order to obtain an aesthetic surface on a refrigerator door, a piece of foil is applied to a metal sheet 10, which is punched, sized, deep-drawn and bent before being glued to a size of the door.

Various methods for making sheet metal are described in the literature. An example of a method is described in GB2265568 (Daiwa Can). In the method of Daiwa Can, a rolled metal plate and a rolled foil plate are used. Both the metal plate and the foil plate are rolled out and the foil plate is adhered to the metal plate, thus forming a laminate plate.

The method of Daiwa Can is used to produce small plate items for, for example, canned boxes. If you want to make a refrigerator door of the plate item made by the method of Daiwa Can, it is necessary to piece together several plate items to achieve a size corresponding to to the dimensions of a regular household refrigerator. Finally, the method of Daiwa Can is not suitable for individual sheet metal parts, as the foil adhered to the sheet metal is prefabricated. This means that it is not possible to change 25 decorations on the foil during the process, as the entire foil must then be replaced.

Another example of a method for making laminated metal sheets is described in US2005 / 0017605 (Bauer). According to this method 30, a foil is also applied to a metal plate, after which the laminated plate a 2 DK 176881 B1 is placed on a refrigerator. However, the foil is applied after the metal plate is punched out. This is a cumbersome and also costly manufacturing process.

Finally, from US 4,475,975 A it is known to laminate a metal sheet with a 5 foil web, which before this lamination is provided with a printed motif and with an applied adhesive layer.

OBJECT OF THE INVENTION It is the object of the invention to alleviate these limitations in the manufacturing process and to achieve a simplification of the method that can be used for larger plate items for, for example, appliances and the shipbuilding industry, and where it is possible to individualize plate members during manufacture.

The present invention solves the problems of the prior art by providing a method for producing a laminated metal plate, especially for panels, cabinets and the like, wherein a metal plate is passed through rollers while passing a foil web through a printer applying a motif, after which the film is passed over an adhesive application device and then adhered together with the metal plate in rollers to form a laminated metal plate.

The laminated metal plate can be punched or otherwise molded into finished panels used for, for example, refrigerator cabinets.

Thus, even large sheet metal pieces can be manufactured and decorated during manufacture.

If the laminated sheet metal is to be used, for example, a door or the like, where you want a nice decoration on both sides of the sheet metal, foil is adhered to both sides of the sheet metal.

3 DK 176881 B1

In order to achieve the best possible quality in printing and at the same time have the possibility of customization during the manufacturing process, the foil is passed through a digital printer, possibly color printer.

5 To obtain the best result of the finished item to be punched, apply the foil all over the metal plate.

The foil can be a soft PVC film that coil is coated to the metal plate for the easiest possible application.

10

The drawing In the following, the invention will be explained in more detail with reference to the drawing, in which 1 shows a plant for producing the laminated plate; FIG. 2 shows the blank and die formed to form the finished blank.

20 Description of Embodiment Examples

Referring to Fig. 1, an example of one embodiment of a method of manufacturing laminated metal sheet for cabinets and panels is shown. In the example, the laminated metal plate is made of a rolled metal plate 8 and a rolled foil web 1. The rolled metal plate can be acquired in any dimension that occurs in practice and usually occurs in a rolled state (called coils).

For example, the sheet metal may have a thickness of between 0.4 and 1.2 mm and a width of up to 850 mm.

9 4 DK 176881 B1

The film web may be a soft PVC film wound in a coil 1,

The foil 2 is passed through a digital printer 3, possibly on an external device, where as the printer passes through the printer in continuous format, the desired format, both in terms of motif and colors, is printed.

Following this digital printing, where the subject is indicated on the foil web by 4, the foil web 2 is passed over a roller 5 and then an adhesive application device 16 for adhesive formation on the underside of the foil web 2.

10

Between roller 6 and a backpressure roller 7, the metal plate 9 runs together with the foil web 2 for an adhesive bonding and thus lamination of the metal plate, which then forms the finished laminated metal plate, which can be rolled into a coil 11, as shown in Fig. 2nd

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Where laminate is required to be established on both sides of the metal plate, the laminated metal plate may be applied to glue on both sides, after which film is laminated on both sides in the same process.

Referring to FIG. 2, a finished laminated metal sheet is wound up in a coil 11.

As indicated, the foil with the print 4 is located on the outside and / or on both sides of the rolled metal sheet.

25

From this laminated web 10, there can then be punched 12 blanks 14 in a generally known manner and thus form the starting point for the subsequent processes for forming the desired blend 13.

The punching or shaping is carried out in a generally known manner by means of a tool 15 as indicated in the drawing.

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Thereby the finished workpiece 13 is formed, which can be a panel for, for example, a vending machine, a refrigerator or the like.

5 The printed 4 will extend uninterruptedly over all curves and bends as the foil will follow the plate and thus constitute an unbroken coating on the plate and thus on the item 13.

The entire fabrication of the workpiece from the printing, lamination and subsequent stamping can be done in a continuous or separate process, which allows the application of the method to obtain a safe and accurate production of workpieces with a perfect surface, the appearance of which may be motifs. in an unprecedented high resolution due to digital printing.

Claims (6)

A method of manufacturing laminated metal sheet, especially for panels, cabinets and the like, wherein a sheet metal (9) is passed through rollers (6,7) while at the same time passing a film web (2) through a printer (3) which applying a motif (4), after which the film (2) is passed over an adhesive application device (16) and then glued together with the metal plate (9) in rollers (6,7) to form a laminated metal plate (10). A method of manufacturing laminated metal sheet according to claim 1, characterized in that the laminated metal sheet (10) is punched and / or formed into panels, cabinets and similar items (13, 14). A method of producing laminated metal sheet according to claim 1, characterized in that film (2) is adhered to one or both sides of the metal sheet (9). Method for producing laminated metal sheet according to claim 1, characterized in that the film (2) is passed through a digital printer (3). 20 5. A method of producing laminated metal sheet according to claim 4, characterized in that the film (2) is passed through a digital color printer (3). Process for producing laminated metal sheet according to claims 1 and 3, characterized in that the film (2) is a PVC film which is coil coated to the plate (9).