RU206710U1 - MAGNETIC MARKER BOARD - Google Patents

Abstract

The utility model relates to a magnetic marker board, which consists of layer-by-layer glued together front and back plastic panels with an element of ferromagnetic material located between them. At the same time, a groove is formed in the rear plastic panel by milling, into which an element of a ferromagnetic material is placed in such a way that an element of a ferromagnetic material does not come out onto the edges of the finished product and is completely hidden inside. The technical result is the elimination of delamination and imparting neatness and smoothness to the edges of the board, as well as simplifying the manufacture of the board.

Description

The utility model relates to devices for demonstration and writing, in particular to a magnetic marker board.

Many different designs of magnetic display panels are known in the prior art with the function of applying text and / or images to them with easily washable writing materials.

For example, from the source WO 03067614 A2, a magnetic marker board is known, consisting of layer-by-layer plastic, including acrylic, parts glued together with an element of magnetic material between them.

From the sources EP 0875056 B1 and US 6308446 B1 a magnetic board is known consisting of layer-by-layer glued together plastic, including acrylic parts with an element of magnetic material between them. Moreover, an image can be applied to the front transparent plastic part.

From the source GB 2343653 A, taken as a prototype, a magnetic marker board is known, consisting of layer-by-layer glued together front and back plastic, for example acrylic parts with an element of ferromagnetic metal material located between them. An image can be printed on the inside of the front clear acrylic piece. The finished product is cut from the workpiece by laser or milling cutting.

However, in all known designs of magnetic whiteboards, the ferromagnetic element extends to the edges of the finished product, which creates a number of problems.

The main problems are the relatively low adhesion of the inner layer of the magnetic metal to the outer plastic layers and the different coefficients of thermal expansion of metal and plastic.

Thus, the relatively low adhesion of a metal-plastic pair, in combination with the different behavior of these materials with temperature changes, can lead to delamination of such a structure, a loss of its strength and a deterioration in its appearance.

Moreover, such negative processes can begin to occur already at the stage of making a board, for example, at the stage of cutting out a finished product according to specified dimensions and finishing the cut edge. Thus, when cutting, there is always a significant heating of the material in the cutting zone, which, in the case of cutting metal-plastic layers, can violate the integrity of the structure.

In addition, the cut-off edge of such a structure may have an inaccurate appearance even if it is additionally finished.

Moreover, such boards require contouring with a special profile frame, which is manufactured separately, which, at least, requires additional production operations.

Thus, the task of the claimed utility model is to overcome the above disadvantages inherent in known designs.

The task is provided by the declared magnetic marker board, which consists of layer-by-layer glued together front and back plastic panels with an element of ferromagnetic material located between them. At the same time, a groove is formed in the rear plastic panel by milling, into which an element of a ferromagnetic material is placed in such a way that an element of a ferromagnetic material does not come out onto the edges of the finished product and is completely hidden inside.

Moreover, the front plastic panel is made of transparent acrylic sheet, and the rear plastic panel is made of painted opaque acrylic sheet. The inside of the front plastic panel can be printed using direct UV printing.

The ferromagnetic element is made of galvanized sheet steel.

In this case, the parts of the board are glued together with double-sided adhesive 2BOPP tape.

The technical result of the claimed utility model is the elimination of delamination and making the edges of the board neat and smooth, as well as simplifying the manufacture of the board.

The essence of the utility model is illustrated by drawings:

in fig. 1 - General view of the magnetic marker board;

in fig. 2 is a sectional view of a magnetic marker board.

FIG. 1 shows a magnetic marker board (1), according to the claimed utility model, which contains a cut edge (2) and an image (3) visible on the front (front side) of the magnetic marker board (1).

FIG. 2 shows a magnetic marker board (1), containing a cut edge (2) in section.

The magnetic marker board (1) consists of a front (front) plastic panel (4) and a rear (back) plastic panel (5). In the rear plastic panel (5), a groove is made by milling into which an element of ferromagnetic material (6) is placed.

The front plastic panel (4), the rear plastic panel (5) and the element made of ferromagnetic material (6) are interconnected with an adhesive layer (7).

In this case, an element made of a ferromagnetic material (6) does not come out onto the edges of the finished product and is completely hidden inside the finished product - a magnetic marker board (1).

As an example of the implementation of the claimed utility model, one can cite a magnetic marker board, manufactured in-house.

The magnetic marker board produced by us consists of a front plastic panel (4) and a rear plastic panel (5), which are layer-by-layer glued together, which are parts made of sheet acrylic with an embedded element made of ferromagnetic material (6), which is an element of galvanized sheet steel. The groove for the insert made of ferromagnetic material (6) is formed in the rear part of sheet acrylic by milling.

Moreover, the front plastic panel (4) is made of transparent acrylic sheet, the rear plastic panel (5) is made of painted opaque acrylic sheet. Galvanized sheet steel, ferromagnetic element (6), on the front side facing the front plastic panel (4), is made with a smooth surface.

At the same time, the image is applied to the inner side of the front plastic panel (4), made of transparent sheet acrylic, by direct UV printing. The parts are glued together with double-sided adhesive 2BOPP tape.

The finished product is a magnetic marker board (1), cut from the workpiece by laser or milling cutting. In this case, the element made of ferromagnetic material (6), made of galvanized sheet steel, does not come out to the edges of the finished product and is completely hidden inside.

The edges of the claimed magnetic marker board consist only of two joined sheets of acrylic material, which have the same properties and can be easily joined using conventional widespread adhesive materials, without the danger of delamination.

The end cutting edge of such a board, after normal polishing, has a neat appearance and does not require the use of additional finishing, for example, lamination with film or encapsulation in a frame.

Thus, the magnetic marker board, according to the declared utility model, allows excluding delamination along the edges of the board, simplifying manufacturing, changing the shape, if necessary, and giving neatness and smoothness to the edges of the board without using a special finish or frame.

Claims (5)

1. Magnetic marker board, consisting of layer-by-layer glued together front and rear plastic panels with an element of ferromagnetic material located between them, characterized in that a groove is formed in the rear plastic panel by milling into which an element of ferromagnetic material is placed in this way that the element of ferromagnetic material does not come out to the edges of the finished product and is completely hidden inside. 2. Magnetic marker board according to claim 1, characterized in that the front plastic panel is made of transparent acrylic sheet, and the rear plastic panel is made of painted opaque acrylic sheet. 3. Magnetic marker board according to claim 2, characterized in that an image is applied to the inner side of the front plastic panel by direct UV printing. 4. Magnetic marker board according to claim 1, characterized in that the element made of ferromagnetic material is made of galvanized sheet steel. 5. Magnetic marker board according to claim 1, characterized in that the parts are glued together with double-sided adhesive tape 2BOPP.

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