JP2002303706A - One-way visible printing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a one-way visible printing member that, when the member is stuck to a transparent window glass or the like, images of characters, figures or the like printed on the surface are visible from the outside but visible from the inside and further the outside can be observed through the member. The member can be used easily for decoration, advertisement or the like and its property hardly changes with time even after it is stuck to the objective surface while the state stuck to objective surface is maintained for a long time. SOLUTION: The one-way visible printing member has a cohesive layer consisting of a peelable pressure-sensitive adhesive on a light-transmitting base material and has a sheet material having a heat sensitive adhesive image forming layer and an opaque layer and notches penetrating the layers on the cohesive layer. When the sheet material is peeled, a part of the sheet material remains on the cohesive layer according to the notches while the cohesive layer remains as exposed in the region except for the region where the sheet material remains.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for one-way visibility printing which provides different optical effects on both sides. In detail, when pasted on a transparent window glass, etc., images such as characters and figures printed on the surface can be seen from the outside, but this image can not be seen from the inside, and the outside can be seen through, decoration and advertising TECHNICAL FIELD The present invention relates to a member for one-way visibility printing which can be used for, for example, and has improved adhesion to a surface to be bonded.

[0002]

2. Description of the Related Art When affixed to a window glass of a car or a store, a printed image such as a character or a figure can be seen from the outside, but this image cannot be seen from the inside, and the outside scene can be seen. Is attracting attention as a new advertising medium. FIG. 1 shows an example. 1A is a plan view of the sheet, and FIG. 1B is a cross-sectional view taken along the line AA ′ of FIG. 1A, showing a state in which the release sheet 101 is being peeled off. FIG. 1C shows a state where the release sheet is peeled off and then attached to a glass surface. That is, one surface is formed as a dark layer 103, and a large number of circular small holes 105 are formed on the sheet on which the image 104 is formed on the opposite surface. Then, the release sheet 101 is peeled off, and the adhesive 102 provided on the dark side is used. It is used by attaching to glass 106 or the like.

[0003]

However, when the above sheet is used as an advertising medium on an automobile or a shop window glass as an advertising medium, it is necessary to face the image outside or outside the car.
Since the dark side is coated with an adhesive, it must necessarily be attached to the outside of a window glass or the like. For this reason, there is a problem that the sheet stuck on the window glass or the like deteriorates due to the influence of water or detergent due to rain, car washing, or the like, and is easily damaged. In order to prevent this deterioration, it is possible to attach a cover film to the entire surface on which the image is formed, but this is not practical because the process becomes complicated and the cost increases.

[0004] On the other hand, in order to prevent the sheet from being affected by the outside world such as rain or car washing, it is necessary to apply an adhesive treatment to the printed image side when the sheet is to be attached to the inside of a window glass or the like. It is difficult to print an image on the printed image, and it is also difficult to apply a pressure-sensitive adhesive on the printed image.

The present inventor has disclosed a Japanese Patent Application No. 2000-8281.
Proposed a one-way visibility printing member that solved the above problems. FIG. 2 is a sectional view showing the structure. FIG.
, 201 is an image forming layer 202 and an opaque layer 203
, 204 is an adhesive layer, and 205 is a base material. Reference numeral 206 denotes a notch that penetrates only the sheet material 201, that is, the image forming layer 202 and the opaque layer 203, and does not reach the adhesive layer 204. The cutout 206 is provided in a band shape or a circular shape when viewed in plan from the image forming layer 202 side.

In order to use the printing member, printing is first performed on the image forming layer 202 and then the sheet material 201 is printed.
Peel off. As a result, a region where the sheet material 201 remains on the adhesive layer as a circular or band-like portion is formed between the region where the sheet material 201 remains and the sheet material 201.
Is peeled off to form a region where the adhesive layer 204 is exposed. Next, the exposed pressure-sensitive adhesive layer 204 is pressed against an inner surface to be bonded such as glass to bond the printing member. In this way, the printed image can be seen from the outside such as the window glass,
From the inside, it is possible to form a state in which the outside can be seen through the portion other than the remaining portion of the sheet material while the image cannot be seen.

FIG. 3 shows a state in which the printing member is adhered to the surface to be adhered. In FIG. 3, reference numeral 302 denotes an image forming layer, 303 denotes an opaque layer, 304 denotes an adhesive layer, 305 denotes a substrate, and 306 denotes glass. FIG. 3A shows the case where the adhesive layer 304 having only the end is adhered to the surface to be bonded of the glass 306, and FIG. 3B shows the case where the glass 306 is adhered with the adhesive layer 304 exposed at the end and other than the end. It represents the case where it is adhered to the surface.

Here, in either case of FIGS. 3A and 3B, since the image forming layer 302 which is in contact with the surface to be bonded of glass has no tackiness, it is natural that 302 is not bonded to the surface to be bonded. Therefore, when the printing member to be pasted is large, it is adhered only with the pressure-sensitive adhesive layer 304 even if there is no problem at first when pasted to the surface to be adhered. This may reduce the adhesive strength and cause partial peeling. Also, in order to adhere to the surface to be adhered,
A certain area of the exposed adhesive layer is necessary,
The sheet material left on the adhesive layer, that is, the area where an image can be formed is absolutely limited. If there is a fine portion in the image to be formed and the fine portion is formed on the portion of the sheet material to be peeled off, the image itself may be lost. Therefore, in such a case, the image to be formed may be restricted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a simple configuration, can keep the production cost low, and can be used by a general consumer such as a commercially available printer. Print the image easily using
An object of the present invention is to provide a printing member that can be attached to window glass or the like and that is easy to handle.

Another object of the present invention is to provide a printing member which can be pasted on a sheet on which an image is formed, which has been difficult in the past, from the inside of a car or a store, and is hardly affected by the outside world. .

Another object of the present invention is to provide a printing member which is hardly affected by aging even after pasting on a surface to be adhered, and which can maintain the adhesion state with the surface to be adhered for a long period of time.

Still another object of the present invention is to provide a printing member in which an image to be formed is less restricted.

[0013]

According to the present invention, there is provided a member for one-way visibility printing, comprising: a pressure-sensitive adhesive layer formed of a removable pressure-sensitive adhesive on a light-transmitting substrate; and heat-sensitive adhesive image formation on the pressure-sensitive adhesive layer. A sheet material having a layer and an opaque layer and having a cut through the sheet material, and when the sheet material is peeled off, a part of the sheet material remains on the adhesive layer in accordance with the cut, and other than the remaining portion Wherein the adhesive layer remains on the substrate and is exposed.

The light-transmitting substrate used in the present invention may be any one that transmits light, and is preferably a transparent or translucent film. For example, films of polyvinyl chloride, polypropylene, nylon, polyester, polyvinyl alcohol and the like can be used.

A commercially available pressure-sensitive adhesive can be used as the removable pressure-sensitive adhesive used to form the pressure-sensitive adhesive layer. For example, a pressure-sensitive adhesive such as a rubber-based, acrylic-based, or silicone-based pressure-sensitive adhesive may be used, and any of these solvent-type, emulsion-type, and hot-melt-type adhesives may be used depending on the form used. These adhesives are applied to the above-mentioned base material using a reverse coater, a gravure coater, a fountain die coater, an air knife coater, a Mya coater, or a comma coater to form an adhesive layer.

The sheet material provided on the adhesive layer comprises a heat-sensitive adhesive image forming layer and an opaque layer. The opaque layer is obtained by providing a light-shielding or reflective material on the adhesive layer, and has several modes as described below.

As a first embodiment of the opaque layer, there is a opaque layer formed by integrally coating a black or dark or metallic ink or paint on paper or film. Further, an opaque layer may be formed by integrally bonding a paper or a film having a light-shielding property or a reflective property with another paper or a film. Examples of usable paper include high-quality paper, coated paper, and synthetic paper. Examples of the film include polyethylene terephthalate, nylon, and vinyl chloride formed into a film. In addition,
To ensure that the opaque layer is separated from the adhesive layer, a release agent is applied to the surface of the paper or film in contact with the adhesive layer to form a release layer between the adhesive layer and the paper or film that forms the opaque layer. It may be provided.

As a second embodiment of the opaque layer, a paper or a film obtained by depositing a metal or the like on a paper or a film, or a film in which a pigment such as carbon black is kneaded may be used as the opaque layer. In this case as well, in order to ensure that the adhesive layer and the opaque layer are peeled off, a release agent is applied to the surface of the paper or film in contact with the adhesive layer, thereby releasing the mold between the adhesive layer and the paper or film. A layer may be provided. The same paper and film as those described in the first embodiment can be used.

As a third embodiment of the opaque layer, a black, dark or metallic color ink or paint is applied on the adhesive layer to form a layer having a light-shielding property or a reflective property to form an opaque layer. Is mentioned. In this case, in order to ensure separation between the adhesive layer and the opaque layer, a release agent may be contained in the opaque layer, or a release layer containing silicone or the like may be provided between the adhesive layer and the opaque layer. preferable.

There are several embodiments of the heat-sensitive adhesive image forming layer provided on the opaque layer. As a first embodiment, there is a case where a heat-sensitive adhesive resin capable of forming an image directly on the resin and having an adhesive force by applying heat is coated on the opaque layer. No. Examples of resins that can be used in the present embodiment include ethylene and ethylene-acryl modified resins, ethylene copolymers such as ethylene-vinyl acetate copolymer, polyamide resins, nylon resins, polyester resins, polyolefin resins, and polyvinyl acetate resins. And polystyrene resins. It is an essential condition that the layer formed of resin is formed so that the film is not damaged when the sheet material is peeled off from the adhesive layer, and it is necessary to pay attention to the layer mixing conditions and the drying conditions after coating. There is.

When an aqueous ink such as an ink-jet ink is used to form an image, it is preferable that the resin used has both water solubility and water absorption. For example, polyvinyl alcohol, polyether-based polyester, polyalkylene oxide copolymer,
Polyvinylpyrrolidone, cellulose or a derivative thereof,
And polyvinyl ethers.

The heat-sensitive adhesive image-forming layer may be formed of only the above resin, but if necessary, a filler, a cationic resin, a surfactant, a defoaming agent, an antioxidant, an ultraviolet absorber, etc. May be added. Examples of the filler include inorganic fillers such as silica, alumina, aluminum silicate, magnesium silicate, basic magnesium carbonate, talc, clay, hydrosulfite, calcium carbonate, titanium oxide, zinc chloride, and polyethylene, polystyrene, Organic fillers such as polyacrylates are included. In particular, when an aqueous ink is used, an inorganic filler is preferable because it has a function of enhancing the absorbability of the aqueous ink and improving the ink receptivity and fixability, in addition to the inherent function of the filler.

In addition, since the cationic resin binds to a dye or the like in an aqueous ink which is generally anionic, it is possible to fix the printing ink in the heat-sensitive adhesive image forming layer and to increase the water resistance of the printed matter. it can. Examples of such a cationic resin include a cationic acrylic resin having a cationic group introduced into a side chain.

As a second embodiment of the heat-sensitive adhesive image forming layer, a resin capable of forming an image directly on the resin and having an adhesive force by applying heat to the resin is used for paper or film. There is a case where a heat-sensitive adhesive image forming layer is integrally formed by coating on the top. In this case, as the resin, those listed in the first embodiment can be used. In addition, as in the first embodiment, only the above-mentioned resin may be used, but if necessary, a filler, a cationic resin, a surfactant, an antifoaming agent, an antioxidant, an ultraviolet absorber and the like are conventionally used. Various additives described above may be added. In this embodiment, unlike the first embodiment, since the resin is applied on paper or a film, the applied resin itself does not need to have a film strength that does not break when the sheet material is peeled off.

A third embodiment of the heat-sensitive adhesive image forming layer is to use a film which can directly form an image on a film and which itself has an adhesive force by applying heat. And heat-sensitive adhesive image forming layers. Examples of the film in this case include a thermoplastic resin film having heat sealing properties such as a polyester film, a polyethylene film, a polypropylene film, and a nylon film. When the ink used to form an image is water-based, the film preferably has both water solubility and water absorption. For example, a polyether-based polyester film, a polyvinyl alcohol-based film, a polyalkylene oxide-based film, a cellulose-based film, a polyvinyl pyrrolidone-based film and the like can be mentioned.

The total thickness of the sheet material comprising the heat-sensitive adhesive image forming layer and the opaque layer is different from the case where each layer is formed of paper or film, or the case where the coated resin itself is formed as a film. However, as long as clear printing is possible, the exposed adhesive layer of the printing member easily adheres to the surface to be adhered such as glass.

The sheet material is provided with a cut which penetrates the sheet material itself but does not reach the adhesive layer, that is, a so-called half cut. This cut (half cut) can be formed by a conventional method such as using a cutting machine, a Thompson, a press, or a laser.

The cuts are preferably circular, polygonal or band-like. The circle here is not only a circle,
It may be an ellipse. The polygon may be a triangle or more, but is preferably a quadrangle to an octagon in consideration of the ease of peeling of the sheet material. Also, the shape of the band is straight,
Zigzag, wavy or a combination of these,
Either one may be used. In addition, the circular shape after peeling off the sheet material,
It is preferable that the remaining portions of the polygonal or band-shaped sheet member have a shape independent of the adjacent remaining portions. FIG. 4 shows an embodiment in which a circular cut is provided, and FIG. 5 shows an embodiment in which a straight band-like cut is provided. Although not shown, a polygonal cut is provided by replacing each circle of the cut shape in FIG. 4 with, for example, a pentagon, a hexagon, an octagon, or the like.

FIG. 6 (a) is a modified version of a straight band-shaped cut as shown in FIG. 4, and is an enlarged view of one of the shapes having corners at both short side ends. . FIG.
FIG. 6A shows a circular cut in which corners similar to those in FIG. 6A are provided, and also shows an enlarged cut shape. FIG. 6 (b) shows the embodiment of FIG. 6 (a), and FIG. 7 (b) shows the embodiment of FIG. 7 (a). Represents an embodiment. 8A and 8B show a pentagonal shape and a hexagonal shape in FIG. 8B as examples of polygonal cuts.

It is preferable that at least two opposing sides around the printing member of the present invention are provided with a portion having a fixed width and not cutting the sheet material. FIGS. 4A and 5
(A) shows a mode in which no cut is formed in two opposing sides, and FIGS. 4 (b) and 5 (b) show a mode in which no cut is formed in four surrounding sides. In these figures, 403 and 503 are portions where no cut is provided. Peel off the sheet material of the part where this notch is not provided from the end to expose the adhesive layer,
The printing member is adhered by bonding the exposed adhesive layer portion and the heat-sensitive adhesive image forming layer which has become tacky by applying heat to the surface to be adhered such as a window glass. Fix on the surface. Thereby, it is possible to prevent the printing member from being peeled off from the end. The widths of the portions where the cuts are not provided at the ends may be different from each other.

The reference numeral 401 in FIG. 4 and 501 in FIG. 5 are the remaining portions of the sheet material after the sheet material is peeled off. In this portion, the heat-sensitive adhesive image forming layer having adhesiveness due to application of heat becomes the outermost surface. Adhere to the surface to be adhered. The portion 402 and the end 403 in FIG. 4 and the portion 502 and the end 503 in FIG. 5 are portions where the adhesive layer is exposed. As in the case of FIG. 3A described above, only the ends 403 and 503 of the exposed portion of the adhesive layer and the remaining portions 401 and 501 of the sheet material may be bonded to the surface to be bonded. . Here, the end portions 403 and 503, together with the heat-sensitive adhesive image forming layer on the outermost surface of the remaining portions 401 and 501 of the sheet material, firmly adhere to the surface to be adhered. However, in the case where the area of the printing member is large, not only the ends 403 and 503 but also the portions 402 and 502 where the adhesive layer is exposed other than the ends are attached to the surface to be adhered in order to make the whole adhesion more uniform. It is preferable to make them adhere (see FIG. 3B).

In this case, the area of the part where the adhesive layer is exposed other than the end is 10 to 10% of the area of the whole part other than the end.
When it is 70%, preferably 40 to 60%, better uniform adhesiveness can be obtained. If the area ratio is too small, the adhesiveness may be insufficient or the outside may be difficult to see, while if too large, the image forming portion may be too small. The area ratio may be appropriately selected in consideration of the type of the adhesive, the thickness of the sheet material, the thickness of the light-transmitting substrate, and the like.

When the cut shape is a band shape having a corner, a circle or a polygon as shown in FIGS. 6, 7 and 8, the peeling of the sheet material becomes easier than that having no corner. In particular, a printing member having a large area is very effective. The angle α of the angle is 0 ° <α <
What is necessary is to satisfy the relationship of 180 °. FIG. 6B,
As shown in FIGS. 7 (b), 8 (a) and 8 (b), when the extended half cut is provided, the sheet material is further easily peeled. Here, the length b of the extended half cut is preferably not more than twice the length a of one short side, particularly preferably 0.5 to 1.5 times. If it is larger than twice, the shape of the remaining image is limited, and the half-cut lines that extend extend, leaving undesired unnecessary ones. On the other hand, when the area is smaller than 0.5 times, it is difficult to remove the printing member when the area of the printing member is large, and the workability may be deteriorated as compared with the case where the half cut is provided.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The production of a printing member according to the present invention will be specifically described with reference to FIG. First, an adhesive such as an acrylic solvent type is applied on a base material 905 of a light transmitting film such as polyethylene terephthalate or vinyl chloride using a reverse coater or the like to form an adhesive layer 904 (FIG. 9 ( a)).

On the adhesive layer 904, a black, dark or metallic powder coating is dry-coated, and is heated and melted.
After fixing, an opaque layer 903 is formed (FIG. 9B-
1)). In this case, the adhesive layer 904 and the opaque layer 903
It is preferable to include a release agent in the opaque layer 903 or to provide a release layer containing silicone or the like between the adhesive layer 904 and the opaque layer 903 in order to surely separate the opaque layer from the opaque layer 903.

As another method of forming the opaque layer, instead of applying a resin as described above, a dark or black or metallic color is applied to the paper by depositing or kneading a pigment. Alternatively, an opaque layer 903 may be provided by providing a film or a film on the adhesive layer.

As another method for forming an opaque layer, as shown in FIG.
a, a layer 903b is formed by applying black, dark, or metallic ink or paint, and a paper or film 903a is formed.
And an ink or paint layer 903b to form an opaque layer 9
03 may be formed (FIG. 9B-2). In any of the above cases, a barrier layer (not shown) is provided between the opaque layer 903 and the adhesive layer 904 in order to prevent the ink or the like of the opaque layer 903 from migrating to the adhesive layer 904 and reducing the adhesiveness. It may be provided.

Next, a polyester resin, a polyamide resin, or the like is coated on the formed opaque layer 903 with a gravure coater or the like, and then dried by, for example, a method of contacting with a hot roll or a method of high-speed air cap hot air jetting. Then, a heat-sensitive adhesive image forming layer 902 is formed (FIG. 9C-).
1)). This high-speed air cap type hot air injection is
This is a method in which hot air is quickly blown from the nozzle toward the coated resin, while the air is quickly exhausted. The formed opaque layer 90
3 and the heat-sensitive adhesive image forming layer 902 form a sheet material 901.

As another method for forming the heat-sensitive adhesive image forming layer, instead of applying a resin as described above, a thermoplastic resin such as a polyester film or a water-absorbing film such as a polyether-based polyester film is used. The heat-sensitive adhesive image forming layer 902 may be provided on the opaque layer 903 (FIG. 9C-1).

FIG. 9 (c-2) shows another creation method.
As shown in FIG. 7, a polyester resin, a polyamide resin or the like is applied on a paper or film 902a with a gravure coater or the like to form a layer 902b, and the paper or film 902a and the resin layer 902b are integrated into a heat-sensitive adhesive image forming layer. 902
May be formed. In this case, paper or film 90
It is preferable that 2a also serves as the opaque layer 903.

Several methods for forming the opaque layer and the heat-sensitive adhesive image forming layer described above can be appropriately combined as needed.

Next, a cut (half cut) 9 that penetrates the sheet material 901 but does not reach the adhesive layer 904
06 is provided (FIG. 9D). Here, as shown in FIG. 4 (a) and FIG. 5 (a), two opposite sides around the sheet material,
Alternatively, as shown in FIG. 4B and FIG. 5B, portions 4 which are not cut with a constant width are formed on four sides around the sheet material.
03 and 503 are provided. For example, 4 around the sheet material
A3 from the side or the end of the opposite two sides toward the inside
5-40mm for printing members smaller than plate
For printing members of a larger size, 5 to 100
It is preferable to provide a portion that does not have a notch of mm.

When making a circular cut, the cut is made so that each of the adjacent circular portions remains independently. The diameter of the circle in this case is 0.5 to 10 m
m, and the distance between adjacent circular portions is preferably 10 to 150% of the diameter of the circular portion.

When making a band-shaped cut,
The band width of the remaining sheet material is 0.5 to 10 mm, and the interval between adjacent band portions is 10 mm of the band portion.
Preferably, it is 150%. Further, it is preferable to make cuts so that every other band-shaped cut can be connected and peeled when the sheet material is peeled, in other words, every other band-shaped cut remains.

If the circular or band-shaped portion is smaller than the above range, processing is difficult. On the other hand, if it is larger than the above range, the unit portion of the image forming portion to be printed is too large, the appearance is poor, and the outside is difficult to see.

If the distance between adjacent parts is smaller than the above range, it is difficult to process. Further, the outside becomes difficult to see due to the light diffraction phenomenon. On the other hand, if the interval is larger than the above range, it becomes difficult to recognize the printed image.

FIG. 6 (a) shows a case where the cut has a band shape, and FIG. 7 (a) shows a case where the cut has a circular shape.
It is preferable that each of them has a shape as shown in FIG. In the case of a polygonal shape having an odd number of corners, such as a triangle, a pentagon, or the like, if the side having the corner on the side to be peeled is arranged, the sheet material is easily peeled. In each case, the angle α of the angle may satisfy the relationship of 0 ° <α <180 °. Further, as shown by a dotted line in FIGS. 6B, 7B, 8A, and 8B, it is more preferable to provide an extended half cut. The length b of the extending half cut is preferably not more than twice the length a of one short side.

Next, a method for specifically using the produced printing member will be described. First, the printer is set so that printing can be performed on the printable surface of the printing member, and a desired image is printed. Next, the sheet material is peeled off from the edge of the sheet material. As a result, a portion corresponding to the cut of the sheet member remains, and a printing member in which the adhesive layer is exposed in a portion other than the remaining portion. This is brought into contact with the surface of the image formed on the glass surface from inside, such as the window glass of a car or store,
The exposed adhesive layer adheres to the glass surface. In this state, it is temporarily fixed. If you want to change the position to stick, because the adhesive layer uses a removable adhesive,
You can change it over and over again.

When the position to be stuck is determined, the entire printing member may be pressed against the surface to be adhered by blowing hot air with a drier or the like. Exposure to the hot air causes the heat-sensitive adhesive image forming layer to have an adhesive force and, together with the exposed pressure-sensitive adhesive layer, adhere firmly to the surface to be bonded. In this manner, the printed image can be seen from the outside of the window glass or the like, but the inside can be seen through from the inside through a portion other than the remaining portion of the sheet material, while the image can not be seen.

[0050]

[Example 1] A heat-sensitive adhesive was prepared by applying an emulsion having the following composition to a top surface of a 50 μm-thick white polyethylene terephthalate (PET) film at a thickness of 30 μm using a gravure coater. An image forming layer was formed. (Composition) Paogen (polyether-based polyester; manufactured by Dai-ichi Kogyo Co., Ltd.): 20.0 parts by weight Pure water: 80.0 parts by weight Then, the opposite of the heat-sensitive adhesive image forming layer of this PET film was formed. An opaque layer was formed by applying black ink over the entire surface. Next, silicone was applied on the applied black ink to form a release layer, and a sheet material was prepared.

Next, as a light-transmitting substrate, a thickness of 50 μm was used.
m transparent PET film was prepared, and Polysic 610 (Sanyo Chemical Industry Co., Ltd.) was formed on the entire surface of one side of this film.
Was applied uniformly using a reverse coater to form an adhesive layer. Next, the two films were superposed on each other such that the release layer on the black side of the white PET film and the adhesive layer of the transparent PET film were in close contact with each other.
It was cut to the size of 4 plates.

Next, on the opposite two sides on the long side of the A4 plate, a width of 1. mm is set using a cutting machine at locations except for a width of 5 mm per side so as to be independent of each other. The sheet material was penetrated so as to prevent the band-shaped cut at 5 mm from reaching the adhesive layer. The interval between one strip and an adjacent strip was 1.0 mm. Thus, a printing member according to the present invention was prepared.

Example 2 A 30 μm-thick Flexine Paogen film (polyether-based polyester film) manufactured by Daiichi Kogyo Co., Ltd. was used as a heat-sensitive adhesive image forming layer. Was used to vapor-deposit aluminum to a thickness of 35 nm to form an opaque layer, and silicone was applied on the surface of the vapor-deposited aluminum to form a release layer.

Next, as a light-transmitting substrate, a 50 μm-thick
m transparent PET film was prepared, and Polysic 610 (Sanyo Chemical Industry Co., Ltd.) was formed on the entire surface of one side of this film.
Was applied uniformly using a reverse coater to form an adhesive layer. Next, the two films were overlaid so that the release layer of the Flexinu Paogen film and the adhesive layer of the transparent PET film were in close contact with each other, and then cut to the size of an A4 plate. Next, a belt-shaped cut was provided in the same manner as in Example 1 to prepare a printing member.

Example 3 Black PET having a thickness of 25 μm
A film (B100 manufactured by Diafoil Co., Ltd.) was used as an opaque layer, and one side of the film was coated with an ink having the composition described in Example 1 to a thickness of 30 μm using a gravure coater to form a heat layer. After drying, a heat-sensitive adhesive image forming layer was formed. Next, silicone was applied to the surface on the side opposite to the side provided with the heat-sensitive adhesive image forming layer to form a release layer.

Next, as a light-transmitting substrate, a 50 μm-thick
m transparent PET film was prepared, and Polysic 610 (Sanyo Chemical Industry Co., Ltd.) was formed on the entire surface of one side of this film.
Was applied uniformly using a reverse coater to form an adhesive layer. Next, after the release layer provided on the black PET film and the adhesive layer of the transparent PET film are in close contact with each other, and the two films are laminated,
Cut to A4 size. Next, a belt-shaped cut was provided in the same manner as in Example 1 to prepare a printing member.

Example 4 A printing member was produced in the same manner as in Example 1 except that both ends of the cut having a width of 1.5 mm were formed as shown in FIG. 6A.

Example 5 Both ends of a cut having a width of 1.5 mm were shaped as shown in FIG. 6B, and the length b of the extended half cut was made equal to the length a of the short side. A printing member was prepared in the same manner as in Example 1 except for the above.

Example 6 A printing member was prepared in the same manner as in Example 1 except that the length b of the extended half cut was twice the length a of the short side.

Comparative Example 1 The procedure of Example 1 was repeated except that the ink for the heat-sensitive adhesive image forming layer of Example 1 was changed to the ink of the image forming layer having the following composition and having no heat-sensitive adhesive property. A printing member was prepared in the same manner. (Composition) Iodosol A-4100 (manufactured by NSC Japan Ltd .: self-crosslinking type acrylic copolymer emulsion: solid content 60%) 10 parts by weight SEBIAN 3754 (manufactured by Daicel Chemical Industries, Ltd .: cationic acrylic acid ester copolymer) Resin emulsion: solid content 30%) 10 parts by weight Silica 10 parts by weight Pure water 70 parts by weight

Comparative Example 2 A printing member was prepared in the same manner as in Example 5 except that the length b of the extended half cut was set to be three times the length a of the short side.

[Evaluation Test] Examples 1 to 6 and Comparative Example 1
The printing member prepared in Nos. 1 to 2 was set on a printer (PM-3000C, manufactured by Seiko Epson Corporation) to print on a white surface, and an image was printed. Thereafter, the sheet member was peeled from the end. As a result, while a part of the sheet member corresponding to the cut was left, the adhesive layer was exposed in a portion other than the remaining portion. This is wiped with ethanol, and from the inside of the flat window glass from which dirt and oil have been removed, the surface on which the image has been formed is brought into contact with the glass surface,
The exposed adhesive layer was lightly pressed so as to adhere to the glass surface, thereby temporarily fixing the adhesive layer. Next, after hot air was blown on the printing member side with a dryer, the entire printing member was pressed uniformly by a roller. The window glass was facing south and the sunshine was selected during the day.

[Evaluation Results] The printing member according to the fourth embodiment having the corners at the end portions is more excellent than the printing member according to the first to third embodiments. It was easier to peel off the sheet material than in Example 4, and the workability was better. On the other hand, in Comparative Example 2 in which the length of the extended half cut is three times the short side, the amount of overlapping is large, and therefore, it is necessary to carefully peel off the printing member, and to peel off more than in Examples 1 to 3. Although easy, it was harder to peel off than in Examples 5 and 6, and the workability was lowered.

The attached printing member was observed from the outside and the inside of the window glass. In all the printing members of Examples 1 to 6 and Comparative Examples 1 and 2, the image printed from the outside can be confirmed, and the image of the outside can not be confirmed from the inside, and the outside scenery can be seen well, and the one-way visibility can be improved. It could be confirmed.

Next, one month, three months and six months
After standing for a month, the state of the printing member was observed. As a result, no change was observed in the printing members of Examples 1 to 6 and Comparative Example 2 even after 6 months, and the state of the first application was maintained. On the other hand, in the printing member of Comparative Example 1, a portion where the printing member slightly floated from the glass surface was observed after three months, and a portion where the printing member floated from the glass surface six months later. In addition, there were some parts that were peeled off at the ends.

[0066]

When the printing member of the present invention is attached to a transparent window glass or the like, images such as characters and figures printed on the surface can be visually recognized from the outside, but this image cannot be seen from the inside. It can be used for decoration, advertising, etc. Further, the configuration is simple, and the production cost can be kept low. Further, even a general consumer can easily print an image using a commercially available printer or the like and paste it on a window glass of a car or a house, and enjoy the decoration made by himself.

If the adhesive is applied to a window glass or the like from which dirt or oil has been removed from the surface, a removable adhesive is used, so that the adhesive can be peeled off and applied many times. be able to. When it is no longer needed,
It can be easily peeled off without staining the surface to be bonded such as a glass surface.

Further, since the printing member on which the image is formed is stuck from the inside of the window glass or the like, it is hardly affected by the external environment such as water or detergent due to car washing or rain, and the initial stuck state should be maintained for a long time. Can be. Therefore, even when used for an advertisement or the like, the advertising effect can be maintained for a long time.

Further, the printing member of the present invention is hardly affected by aging even after pasting on the surface to be adhered, and can maintain the adhesion state with the surface to be adhered for a long time. Furthermore, even if the image is fine, there is little restriction on the image to be formed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a conventional one-way visibility printing member.

FIG. 2 is a sectional view showing a structure of a member for one-way visibility printing according to Japanese Patent Application No. 2000-8281.

FIG. 3 is a cross-sectional view when a printing member according to Japanese Patent Application No. 2000-8281 is adhered to a glass surface.

FIG. 4 is a plan view showing an example of a cut of a printing member of the present invention.

FIG. 5 is a plan view showing an example of another cut of the printing member of the present invention.

FIG. 6 is an enlarged view of an example of a cut of a printing member of the present invention.

FIG. 7 is an enlarged view of another example of the cut of the printing member of the present invention.

FIG. 8 is an enlarged view of another example of the cut of the printing member of the present invention.

FIG. 9 is a cross-sectional view showing a step of producing a printing member of the present invention.

[Explanation of symbols]

 101 ... Release sheet 102 ... Adhesive 103 ... Dark layer 104 ... Image 105 ... Small hole 106 ... Glass 201 ... Sheet material 202 ... Image forming layer 203 ..Opaque layer 204 ... Adhesive layer 205 ... Base material 206 ... Cut 302 ... Image forming layer 303 ... Opaque layer 304 ... Adhesive layer 305 ... Base material 306 ... Glass 401 ・ ・ ・ Remaining part 402 ・ ・ ・ Part where the adhesive layer is exposed 403 ・ ・ ・ Part where no cut is provided 501 ・ ・ ・ Remaining part 502 ・ ・ ・ Part where the adhesive layer is exposed 503 ・ ・ ・ No cut is provided Part 901 sheet material 902 heat-sensitive adhesive image forming layer 902 a paper or film 902 b resin layer 903 opaque layer 903 a paper or film 9 3b: ink or paint layer 904: adhesive layer 905: base material 906: cut a: length of short side b: length of extended half cut α: .Angular angles

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H042 AA01 AA07 AA33 4J004 AA05 AA10 AA11 AB01 AB03 CA04 CA05 CC02 CE01 DB04 DB05 EA04 FA01

Claims (9)

[Claims] 1. A pressure-sensitive adhesive layer made of a removable pressure-sensitive adhesive on a light-transmitting substrate, and a sheet material having a heat-sensitive adhesive image forming layer and an opaque layer on the pressure-sensitive adhesive layer and having a cut-out penetrating therethrough. When the sheet material is peeled off, a part thereof remains on the adhesive layer in accordance with the cut, and the adhesive layer remains on the base material in a part other than the remaining part. A one-way visibility printing member characterized by being exposed. 2. The member for one-way visibility printing according to claim 1, wherein the heat-sensitive adhesive image forming layer is made of a heat-sensitive adhesive resin. 3. The one-way visible printing member according to claim 2, wherein the heat-sensitive adhesive resin has water absorbency or water solubility. 4. The one-way visibility printing member according to claim 1, wherein the shape of the cut is a large number of circles, polygons, or bands. 5. The polygon according to claim 4, wherein the polygon is a rectangle to an octagon.
The member for unidirectional visibility printing according to the above. 6. The one-way visibility printing member according to claim 4, wherein a plurality of circular or band-shaped cuts are provided, wherein the cuts on opposite sides have corners. 7. A plurality of circular or band-shaped cuts having opposing sides of the cut having corners, and having a half cut cut in a direction in which each of the corner sides extends. 4. The member for unidirectional visibility printing according to 4. 8. The one-way visibility printing according to claim 4, wherein on the side having the corner, a number of polygonal notches are provided, each of which has a half-cut notch in a direction in which each of the sides forming the corner extends. Parts. 9. The member for one-way visibility printing according to claim 7, wherein the length of the extended half cut is not more than twice the length of a side forming an angle.