JPH02289190A - Displaying sheet and production thereof - Google Patents

Abstract

PURPOSE:To obtain the subject bright sheet capable of sufficiently transmitting illumination light by laminating a transparent vinyl chloride resin layer to one surface of a cloth made of a synthetic resin and further a white vinyl chloride resin layer to the other surface thereof, coating the resultant white vinyl chloride resin layer with a urethane-based resin and carrying out heat transfer of a displaying pigment from the above-mentioned coating layer surface coated with the urethane-based resin. CONSTITUTION:The first layer of transparent vinyl chloride resin is laminated to one surface of a cloth made of a synthetic resin and the second layer of the vinyl chloride resin is then laminated to the side of the other surface. A urethane-based resin is subsequently applied onto the above-mentioned second layer and a displaying pigment is subjected to heat transfer to the coating layer to permeate and transfer the aforementioned pigment from the above- mentioned coating layer to the aforementioned second resin layer (without permeating to the first resin layer). Thereby, a displaying sheet having a bright display surface and capable of sufficiently transmitting light from the back side thereof without dimming the display contents is obtained.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a display sheet and a method for manufacturing the display sheet, and its purpose is to provide a display sheet with a clear display surface and a lighting device inside. When used as a signboard by attaching this display sheet to a signboard frame equipped with a signboard frame, the illumination from the lighting device inside the signboard will transmit well to the display surface, and the light from the outside of the signboard will be well reflected. The present invention provides a display sheet and a method for manufacturing the display sheet.

(Prior Art) Conventionally, acrylic boards have been widely used as display members attached to signboard frames, but acrylic boards have problems such as being heavy, making them inconvenient to carry, and being easily broken.

Therefore, recently, a display sheet has appeared in which display contents are expressed on a transparent flexible vinyl chloride sheet and the display sheet is attached to a signboard frame.

This sheet (d) is made of woven fabric (a) as shown in FIG.
A first resin layer (b) made of transparent vinyl chloride is laminated on one side, and a second resin layer (C) made of white vinyl chloride is laminated on the other side.

This sheet (d) is more flexible than acrylic boards, etc., so it is convenient to carry and attach to the sign frame, and it also allows light from inside the sign to pass through to the outside and reflects light from outside the sign. It is an excellent product with the following functions.

To express characters, designs, etc. on this sheet (d), the designer uses an airbrush to draw designs on the surface of the sheet (d), or uses a silk screen to create characters, designs, etc. on the sheet (d).
) A method of printing a pattern etc. on the surface (the surface of the second resin layer (C)), and a method of thermally transferring a transfer paper coated with a display pigment.

When drawing a design on the surface of the sheet (d) (the surface of the second resin layer (C)) with an airbrush or printing with a silk screen, the display pigment (el is
) (the surface of the second resin layer (c)). However, light from inside the signboard does not pass through the display pigment to the outside, and there is a problem in that the displayed content becomes difficult to see, especially at night or during the day when it is dark, such as on a cloudy day.

On the other hand, a display sheet (f) obtained by thermally transferring a transfer paper (g) coated with a display pigment (e) to the sheet (d)
The pigment (e) penetrates into the interior of the display sheet, so if this display sheet is attached to a signboard frame and illuminated from inside the signboard, the light will penetrate into the display sheet. It is transparent to the outside of the screen, allowing the display contents to be displayed brightly even in the dark.

The method for manufacturing display sheets by thermal transfer is shown in Figure 1O.
As shown in FIG. 11, the second resin layer (C
) is placed on a transfer paper (g) (not shown), and then the pigment (e) applied to the transfer paper (g) is transferred by a thermal transfer device (not shown).

(Problem U to be Solved by the Invention) However, the display sheet manufactured by the conventional thermal transfer method to the sheet (d) has the following problems.

That is, when thermally transferring the pigment to this sheet (d), the first resin layer (b) and the second resin layer (
C) is usually composed of vinyl chloride containing a plasticizer such as DOP, so during thermal transfer, the pigment (e) is dissolved in the plasticizer and transferred to the second resin layer of the sheet (d). (
C), it permeates (bleeds) through the woven fabric (a) and reaches the first resin layer (b) (see FIG. 11).

When the pigment (e) permeates to the first resin layer (b) in this way, the pigment tel diffuses within the first resin layer (b), so that the display sheet is removed as shown in Figure 12). The displayed content was often blurry when viewed from the surface.

In this invention, when the pigment is thermally transferred to the sheet, the pigment does not diffuse too much within the sheet, and the pigment penetrates into the middle of the thickness of the sheet to improve the transmittance of light from inside the signboard. It is an object of the present invention to provide an improved display sheet and a method for manufacturing the display sheet.

(Means for Solving the Problems) The present invention includes a woven fabric made of synthetic resin, a first resin layer made of transparent vinyl chloride laminated on one side of the woven fabric, and a first resin layer made of transparent vinyl chloride laminated on one side of the woven fabric, and A display pigment is applied by thermal transfer to the surface side of the coating layer of a sheet consisting of a second resin layer made of white vinyl chloride laminated on the surface of the sheet, and a coating layer made of urethane resin applied to the surface of the second resin layer. A display sheet formed by transferring the coating layer or the coating layer to the second resin layer so as to be transparent, a synthetic resin woven fabric, and a transparent vinyl chloride layer laminated on one side of the woven fabric. A coating agent made of urethane resin is applied to the surface of the second resin layer of a sheet consisting of one resin layer and a second resin layer made of white vinyl chloride laminated on the other side of the woven fabric. forming a coating layer, then placing a transfer paper coated with a display pigment on the surface of the coating layer of this sheet, and then transferring the display pigment in the transfer paper to the sheet using a thermal transfer device. All of the above problems are solved by providing a method for manufacturing a display sheet with characteristics.

(Function) Due to the presence of the coating layer made of urethane resin applied to the surface of the second resin layer made of white vinyl chloride, the coating layer allows the display pigment to be transferred onto the sheet when thermally transferring the display pigment. Transmission is suppressed.

That is, the display pigment remains in the second resin layer and does not pass through the first resin layer.

In a display sheet in which the display pigment is allowed to pass through the above-mentioned portions, the pigment does not diffuse within the sheet, and therefore, the displayed content does not become blurred.

When this display sheet is attached to a signboard frame, the light (transmitted light) from the illumination inside the signboard passes through the sheet uniformly, resulting in uniform brightness and is also good against light from outside the sheet. reflect.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

1 and 2 show a front view and a sectional view of a display sheet according to the present invention.

This display sheet (1) has a display pigment (
7) is thermally transferred.

The sheet (2) consists of a woven fabric (3), a first resin layer (4), a second resin layer (5), and a coating layer (6).

The woven fabric (3) is a fabric woven from synthetic resin fibers such as low-shrinkage polyester, which gives the sheet (2) appropriate elasticity and strength, and evens out the light that hits the sheet (2). Spread it.

A first resin layer (4) is laminated on the negative side of the woven fabric (3).

This first resin layer (4) is made of transparent polyvinyl chloride.

This polyvinyl chloride contains a commonly used plasticizer such as DOP to give it flexibility.

A second resin layer (5) is laminated on the other side of the woven fabric (3).

This second resin layer (5) is made of white (milky white) polyvinyl chloride.

Similar to the first resin layer (4), this polyvinyl chloride also has the following properties:
A plasticizer is contained according to a conventional method.

A coating layer (6) formed by applying a coating agent is formed on the surface of this second resin layer (5).

For this coating layer (6), a urethane resin is used, and in the examples, a copolymer resin or a mixed resin (acrylic urethane resin) of an acrylic resin and a urethane resin is preferably used.

The thickness of the sheet (2) excluding the coating layer (6) is, for example, 350 μm to 600 μm, and the thickness of the coating layer (6) is about 10 μm to 13 μm.

A display pigment (7) is thermally transferred from the surface side of the coating layer (6) of this sheet (2).

This display pigment (7) is transmitted from the coating layer (6) into the second resin layer (5), but not into the first resin layer (4).

Display pigment (7) of display sheet (1) that looks like this
The cast paper (8) is thermally transferred to the side to which the image is transferred, thereby imparting gloss.

The display sheet (1) is installed outdoors or indoors by being attached to a signboard frame (9) as shown in the first diagram.

This display sheet (1) contains display pigments (7
) is transmitted only to the middle of the sheet (2), that is, to the second resin layer (5), and the diffusion of the display pigment (7) inside the sheet (2) (in the direction of the sheet surface) is suppressed. It is being

Next, a method for manufacturing a display sheet according to the present invention will be explained based on FIGS. 3 to 8.

FIG. 3 shows a prefabricated flexible sheet.

This flexible sheet consists of the first resin layer (4) laminated on the negative side of the woven fabric (3) and the woven fabric (3) as described above.
3) a second resin layer (5) laminated on the other side.

A coating agent made of urethane resin is applied to this flexible sheet to form a coating layer (6) (see FIG. 4).

The thickness of this coating is approximately <10 μm to 13 μm as described above.

Next, a transfer paper αω coated with a display pigment (7) is placed on this sheet (2) (see FIG. 5).

αD is the backing paper of this transfer paper αω.

Next, this sheet (2) is transferred to a thermal transfer device α' as shown in the sixth figure.
This thermal transfer device α2 is placed in the IJ (only the main part is shown).
The display pigment (7) is thermally transferred.

This thermal transfer device αD has a plurality of air suction holes (14) formed on a base (13).

The action during thermal transfer is as follows.

First, heat of about 110° C. is applied to the transfer paper a (I) for about 1 minute using a heat source (not shown) of a thermal transfer device αυ.

At the same time, air is sucked in (vacuum) from the air suction hole (14) to bring the sheet (2) into close contact with the base (13).

The force during this suction is lrr! in this embodiment. 1 per
It is said to be 01.

When heat is applied to the transfer paper aω, the display pigment (7) sublimates and the particles in the second resin layer (5) and the first resin layer (4) constituting the sheet (2) expand.

This expansion creates gaps between the particles, through which the sublimated display pigment is transmitted.

While there is a gap between the particles, there is a risk that air other than the display pigment (7) may enter the gap, but since air is sucked in from the air intake hole (14), there is a possibility that air may enter the gap between the particles. It doesn't trap air.

This prevents the display pigment (7) from being poorly fixed to the particles due to air trapped between the particles, and prevents air particles from forming and causing color unevenness of the display pigment. .

As a result of this thermal transfer, the sublimated display pigment (7) is transferred and fixed within the sheet (2) (see FIG. 7).

In this invention, the coating layer (6) is formed on the second resin layer (5) of the flexible sheet before the transfer paper is thermally transferred. (7) is not transmitted to the vicinity of the back surface of the sheet (2) (that is, to the first resin layer (4)), but is transmitted only to the middle of the sheet (2), that is, to the inside of the second resin layer (5).

Therefore, the display content is prevented from becoming blurred and unclear due to the display pigment (7) being transmitted close to the back surface of the sheet (2).

After the thermal transfer is completed, transfer the backing paper αυ of the transfer paper aω from sheet (2).
is peeled off to complete the display sheet (1).

Further, as shown in Figure 8, a transparent cast paper (8) is applied to the coating agent (6) of the display sheet (1).
) side, and this cast paper (8) is thermally transferred onto the display sheet (1) using a thermal transfer device.

After this thermal transfer process is completed, the backing paper α9 of the cast paper (8) is peeled off to obtain a display sheet (1) as shown in the second figure.

By transferring this cast paper (8) to the display sheet (1), gloss is imparted to the display surface.

(Effects of the Invention) This invention comprises a woven fabric made of synthetic resin, a first resin layer made of transparent vinyl chloride laminated on one side of the woven fabric, and a white resin layer laminated on the other side of the woven fabric. A display pigment is thermally transferred onto the surface side of the coating layer of a sheet consisting of a second resin layer made of vinyl chloride and a coating layer made of urethane resin applied to the surface of the second resin layer. Since it is a display sheet that is transferred from the coating layer to the second resin layer so as to be transparent, it has the following effects.

That is, due to the presence of the coating layer made of urethane resin, the display pigment is transferred to pass through the coating layer or from the coating layer to the second resin layer, so that the display pigment passes through the sheet too much. In particular, the light is not diffused within the first resin layer, so that the displayed content is not blurred, the display surface is clear, and light from the direction of the back surface of the display sheet is transmitted well.

When this display sheet is attached to a signboard frame and used, the displayed content itself is clear, the display surface is uniformly brightened by illumination from inside the signboard, and light from outside the display sheet is well reflected. .

The present invention also provides a woven fabric made of synthetic resin, a first resin layer made of transparent vinyl chloride laminated on one side of the woven fabric, and a first resin layer made of transparent vinyl chloride laminated on the other side of the woven fabric. A coating agent made of urethane resin is applied to the surface of the second resin layer of a sheet consisting of a second resin layer made of vinyl to form a coating layer, and then a display pigment is applied to the surface of the coating layer of this sheet. This is a method for producing a display sheet, in which a transfer paper coated with is placed, and then the display pigment in the transfer paper is transferred to the sheet using a thermal transfer device, so that the following effects are achieved.

That is, due to the presence of a coating layer made of urethane resin applied to the surface of the second resin layer made of white vinyl chloride, when the display pigment is thermally transferred, the first resin layer of the display pigment is A display sheet with the above-mentioned clear display surface can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view of a display sheet according to the present invention attached to a signboard frame, FIG. 2 is a sectional view of the display sheet, and FIGS. 3 to 8 are a front view of the display sheet according to the present invention. 9 to 11 are cross-sectional views showing each step of the manufacturing method, and FIG. 12 is a sectional view showing each step of the conventional manufacturing method of display sheets.
The figure is a front view of a display sheet manufactured by a conventional thermal transfer method, and FIG. 13 is a front view of a display sheet in the dark, with a display pigment coated only on the surface. (1)... Display sheet (2)... Sheet (3)
...Woven fabric (4)...First resin layer (5)...
・Second resin layer (6)...Coating layer (7)・
・・Display pigment a・・Transfer paper ■・・Thermal transfer device Fig.

Claims (2)

[Claims] (1) A woven fabric made of synthetic resin, a first resin layer made of transparent vinyl chloride laminated on one side of the woven fabric, and a first resin layer made of white vinyl chloride laminated on the other side of the woven fabric. A display pigment is transferred from the coating layer to the coating layer by thermal transfer to the surface side of the coating layer of a sheet consisting of a second resin layer and a coating layer made of urethane resin applied to the surface of the second resin layer. Second
A display sheet that is transferred to the resin layer so that it is transparent. (2) A woven fabric made of synthetic resin, a first resin layer made of transparent vinyl chloride laminated on one side of the woven fabric, and a first resin layer made of white vinyl chloride laminated on the other side of the woven fabric. A coating agent made of urethane resin is applied to the surface of the second resin layer of a sheet consisting of a second resin layer to form a coating layer, and then a display pigment is applied to the surface of the coating layer of this sheet. 1. A method for manufacturing a display sheet, comprising: placing a transfer paper on the display sheet, and then transferring display pigments in the transfer paper onto the sheet using a thermal transfer device.