JP5008049B2 - Display paste sheet - Google Patents

Description

The present invention relates to a display sticking sheet used for guidance display of indoor or outdoor traffic signs, explanatory signs, and the like.
More specifically, the present invention relates to a display sticking sheet that is embossed, has an uneven portion sufficiently shaped, is durable, and has flexibility as a whole.

Conventionally, display sticker sheets are used for various things such as tourist information signs, traffic signs, road signs, and the like.
In general, display sticking sheets generally have a polyvinyl chloride resin sheet as a base layer, the base layer is colored by printing, and an adhesive layer and release paper are laminated in many cases.
And at the time of use, a release paper is peeled and a sheet | seat is affixed on the location where it becomes necessary with the adhesive force of an adhesive layer.

However, when a polyvinyl chloride resin sheet is used, there is a problem in that dioxin and hydrogen chloride gas are generated when the sheet is incinerated and discarded after the effect of the sheet is finished.
In order to avoid this problem, it is necessary to incinerate the polyvinyl chloride resin sheet at a high temperature, but for this purpose, it cannot be processed with a simple incineration facility, and the durability of the incineration facility decreases as the temperature increases. There is a disadvantage of doing.
Therefore, in recent years, there has been a demand for an environmentally friendly labeling sheet that can be processed with a simple incineration facility.

Therefore, for example, an adhesive sheet for display using a polyolefin resin sheet as a base material layer is marketed (see Patent Document 1).
However, polyolefin resin sheets are generally less flexible than polyvinyl chloride resin sheets and have a problem of poor workability on three-dimensional curved surfaces.
As a sheet without such a defect, there is a sheet using a polyurethane resin or a silicone resin which is more flexible than polyvinyl chloride.

JP-A-8-157780

However, as described above, when polyurethane resin, polysilicone resin or the like is applied to the material of the display adhesive sheet, these resins are relatively flexible materials. For example, the sheet is embossed to prevent slippage. When the concavo-convex portion is formed, the concavo-convex portion returns to the original shape and is easily flattened (see FIG. 14).
For this reason, the anti-slip action is deteriorated and the original function cannot be exhibited.

The present invention has been made based on the above background.
That is, an object of the present invention is to provide a display sticking sheet in which an uneven portion formed by embossing is not flattened.

  Thus, as a result of intensive research on such problems, the present inventor found that the shape retention of the concavo-convex portion is enhanced by embossing the soft sheet layer on which the hard coat layer is formed, The present invention has been completed based on this finding.

The present invention provides: (1) has a restoring force, and the soft sheet layer made of a colorless transparent polyurethane resin, is formed on the surface of the soft quality sheet layer, the pencil hardness defined in JIS K5410 is at least 2H Ah it is, a hard coat layer made of a transparent fluororesin, and a display pattern printed layer formed on the back surface of the soft sheet layer, by embossing is applied from the hard coat layer side, a hard coat layer and An uneven portion is formed on the soft sheet layer, and the uneven portion of the soft sheet layer is shaped by the hard coat layer, and the display pattern printing layer includes a colored layer for displaying a pattern and the colored layer. It lies in the display joining sheet ing from a white layer containing titanium oxide fine particles as a background color.

That is, the present invention provides (2) a white layer resides in the display joining sheet according to Der Ru above those obtained by containing titanium oxide fine particles in the urethane resin (1).

That is, this invention exists in the adhesive sheet for a display as described in said (1) by which the adhesive layer was formed on the display pattern printing layer of ( 3 ).

That is, this invention exists in the adhesive sheet for a display as described in said ( 3 ) by which the release paper was provided to the adhesive layer ( 4 ).

That is, this invention exists in the sticking sheet for a display as described in said ( 3 ) in which the adhesive layer was formed with the adhesive of acrylic resin ( 5 ).

That is, the present invention provides (6), release paper has a projection line, above the air vent grooves in the adhesive layer by the protrusion lines are formed (4) lies in the display joining sheet according.

That is, this invention is a manufacturing method of the adhesive sheet for a display as described in any one of ( 7 ) and said (1)-( 6 ), Comprising: A colored layer is printed on a transparent soft sheet layer, Furthermore, A step of printing a white layer on the entire surface of the soft sheet layer so as to cover the colored layer; a step of inverting the soft sheet layer to form a hard coat layer on the surface of the soft sheet layer; and a hard coat layer side And a step of embossing the hard coat layer and the soft sheet layer, and a step of cutting to a final dimension.

  In addition, as long as the objective of this invention is met, the structure which combined said (1) to (9) suitably is also employable.

According to the present invention, the hard coat layer is formed on the surface of the transparent soft sheet layer, and the embossing is performed from the hard coat layer side to form the uneven portion (embossed pattern). The uneven part is reliably retained. Therefore, the anti-slip function can be maintained for a long time and the durability is improved.
Moreover, since the soft sheet layer itself has flexibility, the handling property at the time of affixing construction is also excellent.

  The hard coat layer protects the soft sheet layer and can prevent wear and the like as much as possible.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a view of the display adhesive sheet of the present invention as viewed from above.
The display pasting sheet 1 of this embodiment has an embossed uneven portion (pattern or sign) H, and is used by being pasted on, for example, a paved road or a floor of a passage inside a building. It is done.

FIG. 2 is a view showing a cross-sectional structure of the display pasting sheet 1.
If it says in order from the layer of the back surface side of the sticking sheet 1 for a display, it will consist of the release paper 2, the adhesive layer 3, the display pattern printing layer 4, the soft sheet layer 5, and the hard coat layer 6.
Further, the display pattern printing layer 4 includes a white layer 4a that is applied to the entire surface of the sheet and serves as a background color, and a colored layer (here, a black layer 4b) that forms an arrow pattern or the like.

  The thickness of each layer is, for example, 150 μm for release paper 2, 300 μm for adhesive layer 3, 70 μm for white layer 4 a, 25 μm for black layer 4 b, 300 μm for soft sheet layer 5, and 50 μm for hard coat layer 6. .

The material of the release paper 2 is not particularly limited as long as the release property to the pressure-sensitive adhesive layer 3 is good.
As the material of the release paper 2, a release-treated plastic sheet or paper is usually used.
As a mold release treatment method, for example, a method of applying silicone, fluorine resin, polyolefin, melamine, ionizing radiation curable resin, or the like is employed.

As the material of the pressure-sensitive adhesive layer 3, an acrylic resin or the like is employed.
The selection of this material is appropriately determined according to the material of the floor selected from asphalt, concrete, stone, tile, wood or the like to be pasted.

As the coloring colorant used for the display pattern print layer 4, organic pigments and inorganic pigments used in conventional inks can be used.
For example, the white layer 4a may be a urethane resin containing titanium oxide fine particles.

The material of the flexible sheet layer 5 is preferably a colorless transparent resin such as a polyurethane resin, a polysilicon resin, or a polyester elastomer, and particularly preferably a polyurethane resin.
Polyurethane resins are characterized by high stretchability, high strength, and light weight.
Since the soft sheet layer 5 is transparent, the display pattern printing layer 4, particularly the black layer 4b, can be easily visually recognized when the sheet is viewed from the surface side.

The hard coat layer 6 is transparent and is preferably formed of a fluororesin excellent in wear resistance, antifouling property, weather resistance, water repellency and the like.
The hardness of the hard coat layer 6 is preferably 2H or more in terms of pencil hardness (JIS K 5410).

  Moreover, since a fluororesin is normally colorless and transparent and does not disturb the visibility of the display pattern printing layer 4, it is preferable also from that point.

Next, the manufacturing method of the display sticking sheet 1 is demonstrated using the flowchart of FIG.
First, in step S1, as shown in FIG. 4, a black layer 4b having an arrow pattern is printed on a transparent soft sheet layer 5 (polyurethane resin layer).
As a printing method, an appropriate method such as silk screen printing, gravure printing, ink jet printing or the like is adopted, but silk screen printing is preferable from the viewpoint of the precision of the printed pattern and operability.

Next, as shown in FIG. 5, the white layer 4a is printed on the entire surface of the soft sheet layer 5 so as to cover the black layer 4b.
When the soft sheet layer 5 on which the white layer 4a is printed is inverted, it becomes as shown in FIG.

Since the soft sheet layer 5 shown in FIG. 6 has a large influence of reflected light depending on the viewing angle, in step S2, the soft sheet layer 5 has a surface on the surface of the soft sheet layer 5 in terms of matting and embossing described later. A hard coat layer 6 (fluorine resin layer) is formed.
Then, there is no reflected light as shown in FIG. 7 (see FIG. 7).

Next, in step S3, embossing is performed.
Specifically, as shown in FIG. 8, the soft sheet layer 5 on which the display pattern printing layer 4 and the hard coat layer 6 are formed is placed on the lower mold 7A so that the hard coat layer 6 is on the upper surface side. Place on top.
Then, the upper die 7B on which the emboss is formed is lowered from above the sheet, and as shown in FIG. 9, the embossed pattern (uneven portion) of the upper die 7B is formed on the soft sheet layer 5 through the hard coat layer 6. Transcribe H.

Then, as shown in FIG. 10, when the upper mold 7B is raised and the sheet is taken out, the sheet is in a state in which an uneven portion H is formed by embossing as shown in FIG.
Thereafter, the release paper 2 provided with the pressure-sensitive adhesive layer 3 is attached to the display pattern printing layer 4 (specifically, the white layer 4a).
Finally, in step S4, the sheet is cut to have final dimensions.

In the above-described embodiment, since the uneven portion H for preventing slip is formed by embossing, for example, a pedestrian is prevented from slipping and falling on the display sticking sheet 1 when it is slippery in the rain.
Further, since the hard coat layer 6 is formed on the surface of the transparent soft sheet layer 5, the wear resistance is improved and the uneven portion H by the embossing is accurately retained, so that sufficient slipping can be achieved over a long period of time. It is possible to exert a stopping function.
Further, since the reflected light is softened by the hard coat layer 6, the display pattern print layer 4 can be clearly seen.

  Further, by changing the thickness of the hard coat layer 6 during production, it is possible to easily cope with the restoring force due to the difference in the material of the soft sheet layer 5.

The present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the essence thereof.
For example, in the above-described embodiment, the example in which the pressure-sensitive adhesive layer 3 is formed flat has been described. For example, as illustrated in FIG. 12, the protruding line 2 a is formed on the release paper 2 and bites into the pressure-sensitive adhesive layer 3. You may do it.

Since the protruding line 2a bites into the pressure-sensitive adhesive layer 3, when the release paper 2 is peeled off, a depression line is formed in the pressure-sensitive adhesive layer 3, which becomes the air vent groove 3a (see FIG. 13).
Since the air between the adhesive layer 3 and the surface to be pasted can be released through the air vent groove 3a when the display pasting sheet 1 is pasted in a predetermined place, There is no accumulation.
Note that a large number of the air vent grooves 3a may be formed in parallel, or may be formed in a lattice shape or a ladder shape.

  Moreover, although the uneven | corrugated | grooved part H formed by the embossing demonstrated by the case where the function of anti-slip was exhibited, even if it is a thing which produces a solid pattern or a function for braille recognition, it is employable.

FIG. 1 is a view of the display adhesive sheet of the present invention as viewed from above. FIG. 2 is an explanatory view showing a cross-sectional structure of the display adhesive sheet of FIG. FIG. 3 is a flowchart showing a manufacturing method of the display adhesive sheet of FIG. FIG. 4 is an explanatory view showing a state in which a black layer is printed on the soft sheet layer. FIG. 5 is an explanatory diagram showing a state in which a white layer is printed on the soft sheet layer. FIG. 6 is an explanatory diagram showing a form in which the soft sheet layer printed in FIG. 5 is turned over. FIG. 7 is an explanatory view showing a state in which a hard coat layer is formed on the surface of the soft sheet layer in FIG. FIG. 8 is an explanatory view showing a state in which the sheet of FIG. 7 is placed on the lower mold. FIG. 9 is an explanatory view showing a state where the sheet of FIG. 7 is embossed by the lower mold and the upper mold. FIG. 10 is an explanatory view showing the die-cut state of FIG. FIG. 11 is an explanatory view showing the form of the sheet after being embossed. FIG. 12 is an explanatory view showing a modification of the display adhesive sheet of the present invention. FIG. 13 shows a state in which the release paper is removed from the display sticking sheet of FIG. FIG. 14 is a diagram for explaining flattening of the uneven portion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display sticking sheet 2 Release paper 2a Protrusion line 3 Adhesive layer 3a Air vent groove 4 Display pattern printing layer 4a White layer 4b Black layer 5 Soft sheet layer 6 Hard coat layer 7A Lower die 7B Upper die H Uneven part

Claims (7)

A soft sheet layer having a restoring force and made of a colorless and transparent polyurethane resin ;
Formed on the surface of the soft quality sheet layer, and the hard coat layer pencil hardness defined in JIS K5410 is Ri der least 2H, made of a transparent fluororesin,
A display pattern printing layer formed on the back surface of the soft sheet layer;
With
Embossing is performed from the hard coat layer side to form an uneven portion in the hard coat layer and the soft sheet layer, and the uneven portion of the soft sheet layer is retained by the hard coat layer We have been,
The display pattern printed layer, Paste display characterized Rukoto such and a white layer containing titanium oxide fine particles as a background color of the colored layer and the colored layer to display a pattern sheet. The white layer for display pasting sheets of Der Ru claim 1, wherein those obtained by containing titanium oxide fine particles in a urethane resin.   The display adhesive sheet according to claim 1, wherein an adhesive layer is formed on the display pattern printing layer. The adhesive sheet for display according to claim 3 , wherein release paper is applied to the adhesive layer. The adhesive sheet for display according to claim 3 , wherein the adhesive layer is formed of an acrylic resin adhesive. The display release sheet according to claim 4 , wherein the release paper has a protrusion line, and an air vent groove is formed in the adhesive layer by the protrusion line. It is a manufacturing method of the sticking sheet for a display as described in any one of Claims 1-6 ,
Printing a colored layer on a transparent soft sheet layer, and further printing a white layer on the entire surface of the soft sheet layer so as to cover the colored layer;
Reversing the soft sheet layer and forming a hard coat layer on the surface of the soft sheet layer;
Embossing the hard coat layer and the soft sheet layer from the hard coat layer side;
Cutting to final dimensions,
The manufacturing method of the sticking sheet for a display provided with.

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