JPH09234830A - Laminated article and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to directly fix to the surface of a magnetic element such as a whiteboard or steel furniture side even without using an adhesive tape and a color magnet. SOLUTION: The one side of a cover film 4 is fixed to the one side of a laminated substrate layer and sheet-like magnet layer 1, the other side openable, and a sheet-like display article 7 is adhesively fixed therebetween with hot-melt adhesive. The film 7 and the substrate layer 2 are formed of synthetic resin having glass transition temperature of 75 deg.C or higher. The adhesive layers 3, 6 exhibit adhesive properties at the glass transition temperature of lower than 20 deg.C. Or, the layer 2 is not provided, but a sheet-like magnet layer 1 is fixed directly to a sheet-like display 2 by heat fusion bonding, and the periphery is fixed with adhesive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated product obtained by laminating a sheet-like display product with a laminating film and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, two laminae having an adhesive layer inside to protect a sheet-like display object such as an information bulletin board, a photograph, an illustration, and a mount on which pressed flowers are attached from dirt and damage.
It has been well known that a sheet-shaped display object is sandwiched between two sheets and pressure-bonded or heat-pressed to obtain a laminate material.
This laminated object can be used by carrying a commuter pass, business card, etc. as it is, but for example, laminated objects such as photographs, illustrations, information bulletin boards, pressed flower mounts, etc. can be placed on the side of whiteboard, steel furniture, etc. An adhesive tape, a color magnet, etc. were required for fixing.

However, the laminate object sandwiching the sheet-like display object has a certain thickness and weight unlike the paper for displaying the information, so that the adhesive tape, the color magnet or the like is damp. It often dropped or slipped due to vibration or vibration.
Therefore, there is a disadvantage that it is uneconomical to use a tape having a considerably strong adhesive force and a color magnet having a strong magnetic force, and the appearance of the display object is impaired.

[0004]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned drawbacks, that is, without using an adhesive tape, a color magnet or the like on the surface of a magnetic material such as a whiteboard or a side surface of a steel furniture. A laminate product that can be directly fixed, and a method for producing the same.

[0005]

SUMMARY OF THE INVENTION In the present invention, a laminate product is provided with a transparent or semi-transparent cover film, a heat-meltable adhesive layer coated on one surface of the cover film, and a thermoplastic material. A sheet-shaped magnet layer having flexibility, an underlayer laminated on one surface of the sheet-shaped magnet layer on the cover film side, a heat-meltable adhesive layer applied on one surface of the underlayer, and two layers. A sheet-shaped display object inserted between the adhesive layers and inside the peripheral edges of the cover film and the sheet-shaped magnet layer,
The cover film and the underlayer have a glass transition temperature of 7
The sheet should be formed of a synthetic resin having a temperature of 5 ° C. or higher, and both adhesive layers should have adhesiveness at a glass transition temperature of less than 20 ° C. With the above-mentioned structure, the above-mentioned problems are solved.

Further, the present invention has a transparent or semi-transparent cover film, a heat-melting adhesive layer applied to one surface of the cover film, and a thermoplastic material having flexibility. The sheet-shaped magnet layer and the sheet inserted between the adhesive layer and the sheet-shaped magnet layer so as to be located inward of the peripheral edges of the cover film, the adhesive layer, and the sheet-shaped magnet layer. The sheet-shaped magnet layer is fixed to the sheet-shaped magnet by thermal welding, and the sheet-shaped magnet layer is positioned outside the sheet-shaped magnet of the cover film and the sheet-shaped magnet layer. The above problem is solved as a structure in which the portion to be bonded is fixed by an adhesive layer.

Further, the present invention relates to a method for producing a laminated product, in which one side of a transparent or semi-transparent cover film having a heat-melting adhesive layer applied to the entire back side has flexibility. The sheet-shaped magnet layer is connected to one side of the sheet-shaped magnet layer, and the sheet-shaped display object smaller than the sheet-sheet-shaped magnet layer and the sheet-shaped sheet-shaped magnet layer is left between the cover film and the sheet-shaped magnet layer. The sheet is sandwiched as the display side, and the sheet-shaped display object is sandwiched between the cover film and the sheet-shaped magnet layer by heating and pressurizing them through at least one pair of rollers.
The sheet-shaped magnet layer portion is fixed to the back surface of the sheet-shaped display object by heat welding, and the cover film and the sheet-shaped magnet layer located outside the sheet-shaped display object are fixed by an adhesive layer. Further, the cover film, the sheet-like display material, and the air between the cover film are discharged by pressing the roller, and the layers are brought into close contact with each other to perform the lamination, and the above-mentioned problems are solved. Settled.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The sheet-shaped magnet layer used in the present invention is
It is possible to use all magnetic powders dispersed in a flexible material such as plastic or rubber, but ferromagnetic powders such as barium ferrite or strontium ferrite are dispersed in a thermoplastic resin to form a sheet. What can be used more suitably. The cover film has a glass transition temperature of 75 ° C.
As described above, for example, a transparent or translucent film such as a polyester resin can be used, and if it is less than 75 ° C., deformation or the like may occur during heat bonding.

The underlayer is laminated on one surface of the sheet-like magnet layer, and is a resin having the same glass transition temperature and melting point as the cover film, for example, the same polyester resin or the like, which is white or chromatic opaque and black. A material that can shield the sheet-shaped magnet layer can be used.

The back surface of the cover film and the entire surface of one side of the underlayer have a glass transition temperature of less than 20 ° C. and have softness and adhesiveness at the time of thermal bonding, for example, a polyester resin or ethylene-vinyl acetate resin as a main component. A heat-melting adhesive such as one is applied to form a laminate, and the heat of the heater disposed in the laminator is uniformly applied to the entire sheet-like magnet layer, the underlayer and the cover film. . Glass transition temperature is 20
If a material having a temperature of ℃ or more is used, sufficient adhesion may not be obtained with a general laminator.

The cover film is fixed to one side of the sheet-like magnet layer and the underlayer having the same outer shape as that of the cover film by heat welding or the like so that one side can be opened and closed as shown in FIG. -Prepare as a sheet for the sheet. Here, it is convenient that the sheet-shaped magnet layers have several different thicknesses depending on the application.

When a desired sheet-like display object such as a photograph is desired to be laminated, a sheet for lamination having a thickness suitable for the place where the sheet is to be displayed is selected, and as shown in FIG. See
After inserting the sheet-shaped display material between the cover film, the sheet magnet layer, and the underlayer, the side where the two pieces are fixed as shown in FIG. ) Insert into a laminator and pass between a pair of rollers with a heater.

Since the laminate sheet is pressed while being heated by the roller, the adhesives of the cover film and the underlayer are melted and adhered to the sheet-like display material, and then the laminate sheet is pressed. The sheet-shaped display object is cooled while being fed by another feeding roller in the printer, and the sheet-shaped display object is fixed between the cover film, the sheet-shaped magnet layer, and the underlayer. Like At that time, since the glass transition temperature or the melting point of the cover film and the underlayer is as described above, the cover film and the underlayer are not deformed during thermal bonding. Further, since the laminate sheet is heated while being sequentially pressed by the roller from the fixed side which can be opened and closed on one side, the cover film, the sheet-shaped display object, and the sheet-shaped magnet layer,
The air between the base layers is sequentially discharged toward the openable / closable side to be adhered to obtain a completely adhered laminate product having no bubbles therein.

In the present invention, as shown in FIG. 2, a sheet-shaped magnet layer without an underlayer and an adhesive layer provided only on the cover film layer side can be applied, which is a sheet. This is applicable when the usage is such that the periphery (base) of the display object may be black. The laminate in this case is that the heat of the roller melts the adhesive on the back surface of the cover film and the surface of the sheet-like magnet layer, and the back surface of the sheet-like display object and the sheet-like magnet layer. The surfaces of the sheet are adhered to each other, and the cover film and the sheet magnet layer of the outer portion of the sheet-like display object are attached to each other with an adhesive.

[0015]

Next, embodiments of the present invention will be described. 88 parts by weight of barium ferrite magnetic substance powder and 12 parts by weight of chlorinated polyethylene resin were mixed with a kneader and rolled to a thickness of 0.17 mm. A sheet-shaped magnet layer 1 was obtained. A white polyester resin (glass transition temperature 81
C., melting point 264.degree. C.) is laminated, and a heat-melting adhesive composed of polyester resin (Toronobo Co., Ltd., Byron GM900, glass transition temperature -20.degree. C.) is applied on the upper surface of the foundation layer 2. As the adhesive layer 3. The adhesive layer 3 is softened at the time of heat bonding and has adhesiveness.

To one side of the sheet-shaped magnet layer 1 and one side of the underlayer 2, one side of a cover film 4 made of the same polyester resin as that of the underlayer 2 except being transparent is fixed by heat welding. As shown in Figure 3, the other side can be opened and closed freely
A sheet 5 for data was obtained. The back surface of the cover film 4 (the surface facing the sheet-like magnet layer 1) is coated with a heat-melting adhesive made of the same polyester resin as the adhesive applied to the underlayer 2 on the entire surface to bond the cover film 4 to the back surface. It is as the agent layer 6.

One side of the laminate sheet 5 is opened, and a bulletin board 7 which is a sheet-like display object having a smaller vertical and horizontal size than the laminate sheet 5 is inserted into the laminat sheet 5 with its peripheral portion left. , Laminate the sheet 5 for laminate, which is closed again and sandwiches the bulletin board 7.
8 (Laminator A3 manufactured by Pilot Co., Ltd.). A schematic view of the laminator 8 is shown in FIG. 4, and one side of the laminator sheet 5 holding the sheet-shaped display 7 is opened and inserted from the entrance with one side of the laminator sheet 5 open and closed. 9
After being heated and pressurized through a pair of rollers 10 having a built-in roller, the feed rollers 11 feed the feed rollers 11 to the outlets. The laminate 5 is cooled in the meantime to fix the bulletin board 7 between the cover film 4, the sheet-like magnet layer 1 and the underlayer 2.

Thus, the laminate product 12 as shown in FIG. 1 was obtained. The laminated product 12 includes adhesive layers 6, 7 between the sheet-shaped magnet layer 1, the underlayer 2 and the cover film 2.
The bulletin board 7 is firmly fixed, there are no bubbles between the layers, and the layers are in perfect contact with each other, and the cover film 4 and the underlayer 2 are not deformed. It was item 12.

When the laminate 12 was applied to the side surface of the steel furniture (not shown), the sheet-shaped magnet layer 1 was adsorbed and fixed. In addition, even if the side surface of the steel furniture is wet and adsorbed, or a little vibration is applied after the adsorption, the laminated object 12
The adsorbing power of was weakened and did not fall or fall. This has the same effect when it is fixed to the white board surface. In addition, when the laminated material 12 became heavy, the sheet-shaped magnet layer 1 could be reliably fixed by using a thick magnet layer having a strong magnetic force.

Although the cover film 4 and the underlayer 4 were made of polyvinyl chloride (glass transition temperature 70 ° C., melting point 160 ° C.) in the above-mentioned embodiment, deformation and wrinkles occurred in the cover film. There was a case that could not be used.

In the embodiment shown in FIG. 2, the sheet-like magnet layer 1 is not provided with the underlayer 2, but the cover film 4 is directly fixed to one side of the sheet-shaped magnet layer 1 so that the sheet can be opened and closed. Is provided only on the cover film 4 side. The laminate in this case melts the adhesive 6 on the back surface of the cover film 4 and the surface of the sheet-like magnet layer 1 by the heat of the rollers 11 and 11 to form the sheet-like display material 7. The back surface and the surface of the sheet-shaped magnet layer 1 are adhered to each other, and the outer portion of the sheet-shaped display 7 is covered with the adhesive 6 to cover the sheet film 4 and the sheet-shaped magnet layer 1.
Are adhered to each other to form a laminate 12 '. This laminated object 12 'is around the sheet-like display object 7 (base)
It can be applied when the method of use is such that it may become black.

[0022]

The laminated product obtained by the present invention is a laminated product without the use of an adhesive tape or a color magnet on the surface of a magnetic material such as the side of whiteboard or steel furniture.
The object can be fixed directly, and it will not slip or drop even if the fixing surface is wet or there is some vibration.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a laminated product obtained by the present invention.

FIG. 2 is a cross-sectional view showing a laminated article of another embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state in which a sheet-shaped display material is inserted into the sheet for lamination of the present invention.

FIG. 4 is a schematic view showing the production of the laminate product of the present invention.

[Explanation of symbols]

 1 Sheet-like magnet layer 2 Underlayer 3,6 Adhesive layer 4 Cover film 5 Sheet for laminator 7 Sheet-like display object 8 Laminator 9 Heater 10 Roll 12, 12 '' Laminated items

Claims (3)

[Claims] 1. A transparent or semi-transparent cover film, a heat-meltable adhesive layer applied to one surface of the cover film, a thermoplastic and flexible sheet-like magnet layer, and a sheet. −
An underlayer laminated on one surface of the cover-shaped magnet layer on the cover film side, a heat-melting adhesive layer applied on one surface of the underlayer, and 2
The cover film and the sheet-shaped display material are inserted between the two adhesive layers so as to be positioned inward of the peripheral edges of the sheet-shaped magnet layer, and the cover film and the underlayer have a glass transition temperature. It is made of synthetic resin having a temperature of 75 ° C. or higher, and both adhesive layers exhibit adhesiveness at a glass transition temperature of less than 20 ° C., and the sheet-like display material is fixed by the opposing adhesive layers. Laminated product characterized by being provided. 2. A transparent or semi-transparent cover film, and a heat-meltable adhesive layer applied to one surface of the cover film,
The sheet-shaped magnet layer having thermoplasticity and flexibility, the cover film between the adhesive layer and the sheet-shaped magnet layer, and the sheet-shaped magnet layer are inserted inward from the periphery of the sheet-shaped magnet layer. It consists of a certain sheet-shaped display object, and the sheet-shaped magnet layer is heat-sealed.
The laminin is characterized in that it is fixed to the sheet-shaped display object and that the portion of the cover film and the sheet-shaped magnet layer located outside the sheet-shaped display object is fixed by the adhesive layer. -Things. 3. A cover or a transparent or semi-transparent cover film having a heat-melting adhesive layer coated on the entire back side is connected to one side of a sheet-shaped magnet layer having flexibility to cover the cover. A sheet-shaped display object smaller than the cover film and the sheet-shaped magnet layer is sandwiched between the film and the sheet-shaped magnet layer with the cover film side as the display side, leaving the peripheral portion, and the sheet-shaped display object is inserted. A sheet-shaped display object is obtained by heat-welding the sheet-shaped magnet layer portion by heating and pressurizing the cover film and the sheet-shaped magnet layer in which the display object is sandwiched between at least one pair of rollers. Of the sheet-shaped display object and the sheet-shaped magnet layer are fixed by an adhesive layer, and the cover film is pressed by a roller.
A sheet-like display product and a method for producing a laminate product, in which air between the sheet-like magnet layers is exhausted and the layers are laminated in a state in which the layers are in close contact with each other.