JPH0543141Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a wall board on which display objects can be displayed by pasting them using magnetic force or by using push pins.

Conventional technology In the past, wall panels used for displaying objects using push pins, adsorbing displays using magnets, soundproofing, and decorating existing walls were iron plates as shown in Figure 3. It is formed by sequentially laminating and integrating a substrate 7, a soft magnetic layer 8, and a surface layer 9 such as
0 is fixed by piercing it into the wall surface made of soft material.

Problems to be Solved by the Invention The soft magnetic layer used in the above-mentioned wall panels is made of soft synthetic resin mixed with iron powder or ferrite. Iron powder is often used because it is particularly inexpensive, but it has the disadvantage of rusting. In other words, a push pin is inserted into the wallboard to attach the display, and the tip of the push pin reaches inside the soft magnetic layer.Generally, the layered part of the push pin is also made of a material that is prone to rust, so after insertion, The push pin may rust, or the magnetic powder may come into contact with the air through the hole when the push pin is inserted, causing rust.Also, if a push pin with rust already formed on a portion of the push pin is used, the autocatalytic effect may occur. As a result, the rust spreads, and the magnetic powder also rusts within the soft magnetic layer, which has the disadvantage of deteriorating the product.

This invention eliminates the above drawbacks,
The purpose of this structure is to prevent the soft magnetic layer and the push pin insertion portion from coming into contact with each other when the push pin is inserted, and to prevent rust from forming within the soft magnetic layer.

Means for Solving the Problems In order to achieve the above object, the present invention provides a soft magnetic layer made of soft synthetic resin mixed with magnetic powder on one surface of the substrate, and restores it by interposing an adhesive layer on the surface of the magnetic layer. A wall plate is constructed by forming a surface layer with force, and a viscous layer interposed between the surface layer and the magnetic layer prevents the magnetic layer from coming into contact with air.

Function Since the present invention has the above-mentioned configuration, when the push pin is inserted into the wall board and the tip of the pin reaches the adhesive layer,
The adhesive sticks around the pin and forms a film that sticks into the soft magnetic layer, and only the tip of the push pin comes into contact with the soft magnetic layer. However, when the pin is pulled out, the restoring force of the soft magnetic material causes a small amount of damage caused by the pin tip. The hole is immediately closed, the hole made by the thick part of the push pin is blocked by the adhesive between the soft magnetic layer and the air, and the hole is closed by the restoring force of the adhesive and the surface layer. There is no possibility that the hole for the pin will be closed in a short period of time, and the magnetic powder in the magnetic layer will not rust.

Embodiment 1 is a substrate, and 2 is a soft magnetic layer provided on one side of the substrate 1, which is formed by mixing iron powder of about 1 to 5 microns in soft synthetic resin. 3 is the adhesive layer,
The surface of the soft magnetic layer 2 is coated with a non-curing, viscous material such as acrylic, epoxy, or urethane. 4 is a surface layer, which is formed on the surface of the adhesive layer 3 to form the wallboard surface, and is made of a material with resilience such as soft vinyl chloride resin, urethane, synthetic rubber, or nonwoven fabric, or a foaming material. .

Next, when attaching a display object to a wall board such as the one described above, it can be attached immediately by using a magnet. In addition, for display items such as paper, press the push pin 5 on the surface layer 4.
It can be stuck and pasted from above the display object 6 applied to the surface. At this time, when the push pin 5 inserted into the wallboard surface layer 4 pierces the adhesive layer 3, a viscous material adheres to the periphery of the push pin 5 and is further pressed to reach the soft magnetic layer 2, but around the pin. The viscous material adheres, and only the sharp tip of the push pin 5 comes into contact with the soft magnetic layer 2, and there is no contact between the push pin 5 and the soft magnetic layer 2 and the magnetic powder mixed therein. Very few. The push pin 5 can securely fix the displayed object by its pushing force and the magnetic force of the magnetic layer 2.

Next, when the display object 6 is no longer needed and the push pin 5 is removed, the hole where the push pin 5 was inserted is immediately closed by the restoring force of the soft magnetic layer and the restoring force of the surface layer 4. The hole where the pin was inserted will no longer be visible from the surface of the wall board. In addition, the soft magnetic layer 2
After the push pin 5 is removed, it is again covered with the adhesive layer 3 and there is no room for it to come into contact with the outside air.
Furthermore, even if a concave portion is formed on the surface of the soft magnetic layer due to movement of the magnetic powder, the concave portion is filled up by the adhesive layer 3.

The wall board constructed as described above can be of any size and used as a display board, or can be attached to an existing wall and used as a decorative wall.

Effects of the invention As mentioned above, the present invention has a structure that prevents the soft magnetic layer in the wallboard and the magnetic powder mixed therein from coming into contact with the outside air or jigs such as push pins, thereby preventing the magnetic powder from rusting. can be prevented,
Furthermore, even if a push pin that is already rusted is used, only the tip of the push pin comes into contact with the soft magnetic layer, so there is little risk of rust spreading to the magnetic powder, thereby extending the life of the wall board. In addition, it is possible to use inexpensive materials such as rust-prone iron powder as the magnetic powder, resulting in high practical effects.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an embodiment of the wall plate according to the present invention, Fig. 2 is a cross-sectional view of the same when display items are attached using push pins, and Fig. 3 is a cross-sectional view showing a conventional example. It is. 1...Substrate, 2...Soft magnetic layer, 3...Adhesive layer, 4...Surface layer.

Claims (1)

[Scope of utility model registration request] A wallboard comprising a soft magnetic layer made of a soft synthetic resin mixed with magnetic powder on one surface of a substrate, and an adhesive layer interposed on the surface of the magnetic layer to form a surface layer having restoring force.