KR102457621B1 - Magnetic bulletin board and manufacturing method of the same - Google Patents

Abstract

The present invention relates to a magnetic bulletin board and a manufacturing method thereof and, more particularly, to a magnetic bulletin board, which comprises: a surface material layer made of a synthetic resin; a first adhesive layer laminated on the lower surface of the surface material layer; rubber paper laminated on the lower surface of the first adhesive layer; a second adhesive layer laminated on the lower surface of the rubber paper; and a thickness control layer laminated on the lower surface of the second adhesive layer, and a manufacturing method thereof. Therefore, the bulletin board for posting documents or the like for information transmission at educational sites such as schools or academies, offices, public institutions, and the like does not use a steel plate-type panel, thereby having no concern for accidents even when being used by young students, can be made light, thereby having few problems that the surface material layer made of the synthetic resin and the thickness control layer used as a cushion material are distanced from each other over time, and particularly, can prevent a reduction in adhesive force even in winter to have no fear of exposure of an internal material, thereby fundamentally solving the problem of poor quality and accidents and extending the service life. In addition, the magnetic bulletin board can use a general metal fixing means other than a magnet fixing means or a magnet, as a post fixing means, thereby enabling postings to be attached thereto by using the general metal fixing means such as a clip even if the magnet fixing means is lost.

Description

Magnetic bulletin board and manufacturing method of the same

The present invention relates to a magnetic bulletin board and a method for manufacturing the same, which can be easily attached and detached by a magnet action. At the same time, it relates to a manufacturing technology for a magnetic bulletin board that can extend the service life of the bulletin board.

Today's bulletin boards are used to facilitate information transfer by users inside buildings such as schools, public institutions, office buildings, and apartments.

Currently, if you look at information boards in schools, academies, government offices, and offices of various levels, they are attached several times using thumbtacks or thumbtacks. There is also a problem that is not flexible in terms of interior.

In order to solve this problem, recently, instead of using a pushpin, a form of attaching using a magnet is widely used.

For the magnetic bulletin board attached using the magnet, a panel made of a metal material was planted inside the outer shell of a synthetic resin material, and a method of using an external magnet was used.

This conventional magnetic bulletin board is a method of attaching from the outside using a magnetic fixture made of a circle or a square, etc., but there is a problem that such a magnetic fixture is easy to lose and still needs to use a tack, a thumbtack, etc. The same problem persisted.

In addition, since the metal panel existing inside has low flexibility and is a sharp material, there is a risk of a safety accident when using it. There is a problem that develops over time, and there is a risk that the metal panel may be exposed due to low adhesive strength, especially in winter. Accordingly, there is a problem of poor quality, there is a risk of safety accidents, and the service life of the bulletin board is shortened, etc. There was a great need for improvement.

As a related art, Republic of Korea Utility Model Publication No. 20-2012-0008370 discloses a panel member that is adhesively installed on the installation target surface through an adhesive medium, and is positioned so as to be able to adhere to the front surface of the panel member while being positioned between the panel member and the panel member. Disclosed is a magnet-fixed bulletin board comprising a transparent member made of a transparent soft synthetic resin material so that a post can be interposed, and a fixing member for closely fixing the edge of the transparent member to the front surface of the panel member.

In this technology, by allowing the transparent member to be closely fixed to the front surface of the panel member through the fixing member, the posts can be easily interposed therebetween, the damage of the posts can be prevented, and the advantages of good visibility are explained.

However, in this technology, it is only about the technology of fixing the panel member to the installation target surface using a fixing member, and it is not possible to post a post using a magnet. There is a limit in that it cannot be freely attached.

In addition, Republic of Korea Registered Utility Model No. 20-0297927 relates to a magnetic bulletin board, characterized in that the bulletin board is closed using a nonwoven fabric containing magnetic powder in which magnetic poles are uniformly arranged using a nonwoven fabric containing a magnetic material. start the technique.

In this technology, it is explained that a post can be easily attached to a bulletin board by using a metal piece attached to a magnet, such as iron, without the need for a tack or a magnet when posting a post.

However, when manufacturing the nonwoven fabric, a method is used in which the nonwoven fabric is manufactured by pressing polyester fibers, etc., and evenly dispersing the magnetic powder inside the nonwoven fabric using an adhesive so that the nonwoven fabric has magnetism due to the magnetic powder. Accordingly, there is a problem in that the nonwoven fabric can be blown off in the form of a powder, and in this case, the function of using a magnetic material is lost, so there is a problem in that the object of the invention cannot be achieved.

In addition, Korean Patent Registration No. 10-2389955 discloses that it is possible to induce easy attachment and fixation of the fixing pins through a fixing plate that is formed inside the bulletin board and guides the end of the fixing pin attached to the bulletin board to be entered and fixed. Not only can it provide convenience in use, but also, it is possible to strengthen the structural safety of the bulletin board by preventing the second plate from being deformed and damaged by external impact through the restoration plate formed between the second plate that binds and fixes the fixed magnet and the fixed plate. technology that can extend the service life of the bulletin board is disclosed.

However, in manufacturing the bulletin board used in this technology, it has an overly complicated structure and requires many manufacturing processes, so that the cost is excessively increased, and thus economic efficiency is deteriorated.

The present invention was developed in view of the prior art situation as described above, and in manufacturing a bulletin board for information delivery, there is no risk of safety accidents during use, and it is light in weight and is used as a surface material and cushion material made of synthetic resin. Since there is no problem that develops between the cushioning materials (thickness control layer) over time, and especially in winter, the adhesive strength does not decrease, so there is no concern about exposing the inner material. An object of the present invention is to provide a technology for manufacturing a magnetic bulletin board having a feature that can extend the .

In order to achieve the above object, the present invention

a surface material layer made of a synthetic resin;

a first adhesive layer laminated on a lower surface of the surface material layer;

a rubber sheet laminated on a lower surface of the first adhesive layer;

a second adhesive layer laminated on the lower surface of the rubber iron paper; and

It provides a magnetic combined bulletin board, characterized in that it comprises a thickness control layer laminated on the lower surface of the second adhesive layer.

In one embodiment of the present invention, the synthetic resin is characterized in that it is composed of polyurethane-based, polyester-based, polyvinyl chloride-based, polyethylene-based or polypropylene-based.

Further, in one embodiment of the present invention, the rubber iron paper is made of soft rubber containing an iron component, and it is characterized in that it further includes a magnetic component.

In one embodiment of the present invention, the second adhesive layer is composed of 5 to 20 parts by weight of calcium formate, 1 to 10 parts by weight of propyl cellosolve, 0.1 to 5 parts by weight of caproic acid, and 0.1 to 5 parts by weight of urea. It characterized in that it further comprises a cold-resistant auxiliary agent in a ratio of 0.05 to 3.0% by weight based on the total weight of the pressure-sensitive adhesive component used in the second adhesive layer.

In addition, in one embodiment of the present invention, the thickness control layer is characterized in that made of a synthetic resin foam or rubber material.

The magnetic bulletin board according to the embodiment of the present invention does not use a steel plate type panel, so there is no risk of safety accidents even when young students use it, and the cushioning material (thickness) used as a surface material made of synthetic resin and a cushion material control layer), and there are fewer problems with the passage of time, and especially in winter, the adhesive strength does not decrease, so there is no risk of exposing the inner material. have the advantage of being able to

In addition, since a magnet fixing means or a general metal fixing means other than a magnet can be used as the post fixing means, even if the magnetic fixing means is lost, there is an advantage that the posting can be posted using a general metal fixing means such as a clip.

1 is a view showing an example of a laminated structure of a magnetic bulletin board according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a view showing an example of a laminated structure of a magnetic bulletin board according to the present invention.

As shown in FIG. 1, in the magnetic bulletin board according to the present invention, the first adhesive layer 20 is laminated on the lower surface of the surface material layer 10 made of synthetic resin, and the rubber iron paper 30 is laminated on the lower surface, and the A second adhesive layer 40 on the lower surface, and a thickness control layer 50 on the lower surface of the second adhesive layer are laminated.

In the present invention, the surface material is usually composed of a synthetic resin fabric called leather, and the thickness thereof may be usually used in the range of 0.4 to 1.1 mm depending on the material.

For example, when the synthetic resin is PVC or PU, it is usually formed to a thickness of 0.9 to 1.1 mm, and when the synthetic resin is PE or PP, it is preferably formed to a thickness of 0.4 to 0.6 mm.

In the present invention, the material of the synthetic resin may be polyurethane-based, polyester-based, polyvinyl chloride-based, polyethylene-based or polypropylene-based, and may be usually transparent or semi-transparent, or may have a specific color such as sky blue or green. may be configured.

In addition, when the surface material layer made of the synthetic resin has a transparent or translucent color, green paper on which a grid is engraved on the lower surface of the synthetic resin may be laminated to form a grid green paper layer.

Paper or polymer resin film may be used for the green paper.

The grid is not necessarily formed as a grid, and other lines or designs of a desired shape may be formed, and may be printed on green paper by methods such as silk printing, master printing, gravure printing, and the like.

A first pressure-sensitive adhesive layer is formed on the lower surface of the surface material layer made of the synthetic resin. As the pressure-sensitive adhesive constituting the first pressure-sensitive adhesive layer, a removable pressure-sensitive adhesive may be used, for example, an pressure-sensitive adhesive made of a resin such as acrylic, silicone, or natural rubber may be used, and aqueous or solvent type, etc. may be used without limitation. .

In order to protect the first adhesive layer, a release paper is attached to the lower surface of the first adhesive layer in a state in which the first adhesive layer is applied to the rubber steel paper, and then the release paper is separated in the actual manufacturing process to make the rubber iron paper. It is attached to the surface material layer.

The release paper usually uses a paper material (liner paper), and since the paper material is easy to absorb the pressure-sensitive adhesive, it is preferable to form a thin film coating on the surface to be bonded to the pressure-sensitive adhesive, and in the present invention, the polyethylene (PE) thin film is formed desirable.

In addition, as the liner paper in the present invention, high-quality paper, art paper, coated paper, kraft paper, etc. may be used, but is not limited thereto.

In the present invention, the rubber iron paper is characterized in that it is made of soft rubber containing an iron component.

In this case, the rubber iron paper may be formed to further include a magnetic component (powder) as well as an iron component.

As such, since the rubber iron is made of a flexible soft material, there is no concern about safety accidents such as scratches and cuts that may occur when using a rigid steel plate as in the prior art. Since it can be fixed using a pushpin, it is not necessary to use a thumbtack or thumbtack, so it is possible to prevent damage to the bulletin board, and it has the advantage of maintaining a smooth state for a long time.

In addition, since the rubber iron paper may contain magnetic powder inside, even if the magnet fixing means is missing due to loss or the like when attaching a post, it is easy to attach a light post using a simple metal fixing means, for example, a clip. There are possible advantages. The iron paper is a paper containing an iron component, and has a property to which a magnet can be attached, and the surface texture is similar to that of a rubber magnet.

In the present invention, the rubber iron paper preferably has a thickness of 0.3 mm or more according to the required specifications of the bulletin board, and for example, it is preferable to have a thickness of 0.4 to 1.0 mm.

Then, in the present invention, the second adhesive layer serves to bond the rubber iron paper and the thickness control layer to each other.

The second adhesive layer may use an adhesive used for the first adhesive layer. That is, the pressure-sensitive adhesive used for the second pressure-sensitive adhesive layer may be a pressure-sensitive adhesive made of a resin such as acrylic, silicone, or natural rubber.

However, since the second adhesive layer has a problem in that the bonding strength between the rubber iron paper and the thickness control layer is poor, an additional additive is required to solve this problem. This is a defect problem and consumer dissatisfaction factor because the adhesive force between the rubber sheet and the thickness control layer is further reduced when the outdoor unit falls, especially in winter, so it is necessary to solve it.

In the present invention, in order to solve this problem, it can be solved by additionally using a cold-resistant auxiliary agent that can prevent the adhesive force from falling even when the temperature of the outdoor air in winter is low. In the present invention, the cold-resistant auxiliary agent can prevent a decrease in adhesive strength in winter by giving an anti-freezing effect.

In the present invention, the cold resistance adjuvant may use a composition consisting of 5 to 20 parts by weight of calcium formate, 1 to 10 parts by weight of propyl cellosolve, 0.1 to 5 parts by weight of caproic acid, and 0.1 to 5 parts by weight of urea, 2 It may be further included in a ratio of 0.05 to 3.0% by weight based on the total weight of the adhesive component.

In the present invention, the potassium formate is a raw material that gives an antifreeze effect, and has a feature of providing an effect of improving adhesive strength.

In addition, the profile cellosolve provides an effect of improving lubrication properties, improving immobility, and preventing frost damage.

In addition, the caproic acid functions to improve the physical properties of the pressure-sensitive adhesive and to improve cold resistance.

In addition, the urea is a non-chlorinated and alkali-free type, dissolved by water, and serves to exert a freezing point strengthening effect and to improve antifreeze performance together with the caproic acid.

In the present invention, an adhesion reinforcing agent may be additionally used to strengthen the bonding force between the rubber iron paper and the thickness control layer during the four seasons as well as the winter season.

In this case, the adhesive strengthening agent that can be used includes an inorganic component consisting of 15 to 30 parts by weight of a resin component made of unsaturated polyester, 1 to 7 parts by weight of mica, 1 to 5 parts by weight of calcium carbonate, and 1 to 10 parts by weight of diatomaceous earth. desirable. In this case, it is preferable that the resin component forms a hollow spherical shape, and the inorganic component surrounds the resin component from the outside to form a bead shape.

In the present invention, the unsaturated polyester included in the adhesion enhancer is formed by condensation polymerization of an acid and a glycol compound, for example, an acid value of 18 to 20 mg/KOH formed by the reaction of fumaric acid and diethylene glycol. lifting can be used. The unsaturated polyester serves to enhance adhesion and durability.

In the present invention, the mica functions to improve water resistance and durability.

In the present invention, the calcium carbonate functions to improve adhesion and durability.

In the present invention, the diatomaceous earth functions to improve anti-condensation properties and adhesion.

In the present invention, the inorganic component serves to increase the bonding strength and durability by enclosing the resin component from the outside to make the tissue dense.

In the present invention, the adhesion strengthening agent is preferably included in a ratio of 0.01 to 2.0% by weight based on the total weight of the pressure-sensitive adhesive component used in the second adhesive layer.

The thickness control layer attached to the rubber iron paper by the second adhesive layer serves to control the thickness of the bulletin board, and usually a product of 0.5 mm or more can be used.

As a material that can be used for the thickness control layer, a synthetic resin foam or rubber material may be used.

The synthetic resin foam may use a foam material such as polyethylene or polystyrene.

The bulletin board having the above structure can be used by attaching it to a back material made of a material such as plywood or MDF using an adhesive.

Above, the magnetic bulletin board and the method for manufacturing the same according to the present invention have been described in detail with reference to the drawings.

As described above, according to the present invention, in the bulletin board for posting documents for information delivery, such as educational sites such as schools or private institutes, offices, public institutions, etc., since the panel in the form of a steel plate is not used, when young students use it There is no risk of safety accidents, and as it is light in weight, there are few problems that occur over time between the surface material made of synthetic resin and the cushion material (thickness control layer) used as a cushion material. Since there is no risk of exposure, it is possible to fundamentally solve the problem of poor quality and safety accidents, and at the same time extend the service life. In addition, since a magnet fixing means or a general metal fixing means other than a magnet can be used as the post fixing means, even if the magnetic fixing means is lost, there is an advantage that the posting can be posted using a general metal fixing means such as a clip.

In the present specification, preferred embodiments of the present invention have been disclosed, and although specific terms are used, these are only used in a general sense to easily describe the technical content of the present invention and help the understanding of the present invention, and to limit the scope of the present invention. It is not meant to be limiting. It will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

Claims (5)

a surface material layer made of a synthetic resin;
a first adhesive layer laminated on a lower surface of the surface material layer;
a rubber sheet laminated on the lower surface of the first adhesive layer ;
a second adhesive layer laminated on the lower surface of the rubber iron paper; and
As a magnetic bulletin board comprising a thickness control layer laminated on the lower surface of the second adhesive layer,
The rubber iron is characterized in that it is made of soft rubber containing an iron component and further includes a magnetic component,
The second adhesive layer is a cold-resistant aid consisting of 5 to 20 parts by weight of calcium formate, 1 to 10 parts by weight of propyl cellosolve, 0.1 to 5 parts by weight of caproic acid, and 0.1 to 5 parts by weight of urea to the second adhesive layer. It further comprises in a proportion of 0.05 to 3.0% by weight based on the total weight of the adhesive component used,
An adhesion reinforcing agent is included in a ratio of 0.01 to 2.0 wt % based on the total weight of the pressure-sensitive adhesive component used in the second adhesive layer, and the adhesion reinforcing agent is 15 to 30 parts by weight of a resin component composed of unsaturated polyester and 1 to 7 parts by weight of mica , including an inorganic component consisting of 1 to 5 parts by weight of calcium carbonate and 1 to 10 parts by weight of diatomaceous earth, wherein the resin component forms a hollow spherical shape, and the inorganic component surrounds the resin component from the outside to form a bead shape Magnetic bulletin board, characterized in that it is used.
The magnetic bulletin board according to claim 1, wherein the synthetic resin is made of polyurethane, polyester, polyvinyl chloride, polyethylene, or polypropylene.
delete delete The magnetic bulletin board according to claim 1, wherein the thickness control layer is made of a synthetic resin foam or rubber material.

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