TW201348390A - Functional adhesive sheet - Google Patents

Abstract

A functional adhesive sheet, which has a support (10), an adhesive layer (12), and a separator (20) in said order and in which the support (10) has a functional layer (11) on the surface opposite to the surface that is in contact with the adhesive layer (12). In the separator (20), a mold release-treated layer (21) is provided on the surface in contact with the adhesive layer (12) and a texturing layer (23) is formed on the surface opposite to the surface in contact with the adhesive layer (the non-mold release surface). The surface of the texturing layer (23) is a textured surface with a peak count value (Pc) of 90 count or more at peak count level +H = 0.5 μm and of 30 count or more at a peak count level +H = 1.5 μm. With said functional adhesive sheet, because secondary transfer to the functional layer (11) of mold release agent, etc., which was adhering to the non-mold-release surface of the separator (20) during storage in rolled form, can be prevented, functional failure of the functional layer (11) due to adhesion of the mold release agent can be prevented.

Description

Functional adhesive sheet

The present invention relates to a functional adhesive sheet in which a support layer, an adhesive layer and a separator having a functional layer (a layer imparting a specific function) are sequentially provided.

In recent years, adhesive sheets having functions such as printability, light diffusibility, and light anti-glare have been widely used. Further, an adhesive sheet having printability has been used in printing labels, printer media, window films for construction, and the like.

According to this, the adhesive sheet having printability is formed by providing an adhesive layer on the surface of the support opposite to the surface having printability, and then bonding the adhesive layer and the release sheet of the separator to roll the roll. Subsequently, the image is printed on the printable surface of the support by lithography, screen printing, thermal transfer printing, inkjet printing, or dry and wet electrophotographic printing.

However, the adhesive sheet having the printability causes a problem that uneven printing occurs in the printing portion. Moreover, a functional adhesive sheet having a function other than printability also has a problem that its functional portion is hindered.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] JP-A-2002-347183 (Request 1)

Therefore, an object of the present invention is to provide a functional adhesive sheet having a support layer, an adhesive layer, and a separator which have a functional layer (a layer imparting a specific function) in sequence, and is a functional adhesive sheet which does not cause malfunction.

As a result of active research by the present inventors to solve the above problems, it has been found that the cause of malfunction is as follows. First, as shown in FIG. 3(a), the release sheet 20 is subjected to a release treatment such as polyfluorination on one surface and is wound in a roll shape, so that the release-treated surface 21 overlaps the non-release surface 22 on the back surface. The release component 21a is transferred onto the non-release surface 22. That is, as shown in FIG. 3(b), when the adhesive layer 12 of the functional adhesive sheet 10 having the functional surface 11 on one side is opposed to the release-treatment layer 22 of the separator, and rolled up, The non-release surface 22 of the spacer 20 is in contact with the functional surface 11 of the functional adhesive sheet 10. Here, when the release sheet 20 transfers the release component 21a to the non-release surface 22, the release component 21a transferred to the non-release surface 22 is secondarily transferred to the functional surface 11 of the adhesive sheet 10, because The function of the functional surface 11 is hindered by the release of the component.

In order to suppress the secondary transfer of the release component 21a transferred onto the non-release surface 22 of the separator 20, it is considered that after the separator is wound out of the separator, until it is bonded between the adhesive sheets, the separator 20 is A coating film is formed on the non-release surface 22. However, only the coating film is formed, and the release component permeates the coating film to float on the surface, and the effect of suppressing secondary transfer cannot be obtained.

Therefore, by reviewing the surface shape of the coating film and the result of secondary transfer, it was found that the secondary transfer was suppressed by applying a specific roughening treatment to the coating film, and the function of the mold release component was not obtained. Functional adhesive sheet with good function.

That is, the functional adhesive sheet of the present invention has a support body, an adhesive layer, a separator, and a functional adhesive sheet having a functional layer on the opposite side of the surface in contact with the adhesive layer. The release sheet is subjected to a mold release treatment on the surface in contact with the adhesive layer, and a peak count value Pc is applied to the opposite surface of the surface in contact with the adhesive layer at a peak count level + H = When it is 0.5 μm, it is 90 counts or more, and when the peak count level is +H=1.5 μm, it is a roughening processor of 30 count or more.

Further, the peak count value Pc in the present invention is based on the American Society of Mechanical Engineers ASME B46.1 (1995). The peak count value Pc is the center line of the profile curve obtained when the center line average roughness Ra of the coating film is measured, and is set to a peak count level line which is separated from the distance by only +H in parallel, and the peak count level line and the roughness are used. When the point at which the degree curve intersects is counted twice as a mountain, and the number of peaks measured every 4 mm in length is counted.

Further, the functional adhesive sheet of the present invention is characterized in that the roughened layer contains a resin and inorganic particles, and is characterized by containing 5 to 30 parts by weight of inorganic particles having an average particle diameter of 2 μm to 10 μm with respect to 100 parts by weight of the resin component. Further, the average particle diameter of the present invention is a value measured by a coulter counter method.

The functional adhesive sheet of the present invention suppresses the secondary transfer of the release component such as polyfluorinated oxygen transferred onto the non-release surface of the separator by applying a specific roughening treatment to the non-release surface of the separator. On the surface of the support having the functional layer, it does not cause malfunction due to the release component, and exerts a good function.

10‧‧‧Support

11‧‧‧ functional layer

12‧‧‧Adhesive layer

20‧‧‧Isolation

21‧‧‧ release treatment layer

23‧‧‧Rough layer

25‧‧‧The substrate of the separator

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing a cross section of a functional adhesive sheet of the present invention.

Fig. 2 is a view showing an example of a method of producing a functional adhesive sheet of the present invention.

Fig. 3 is a view for explaining the problem of the present invention.

Fig. 4 is a view showing the surface state of the embodiment 1.

Fig. 5 is a view showing the surface state of Comparative Example 2.

The functional adhesive sheet of the present invention has a support body in sequence, An adhesive layer, a separator, and a functional adhesive sheet having a functional layer on a surface opposite to a surface in contact with the adhesive layer, wherein the separator is demolded on a surface in contact with the adhesive layer The peak count value Pc applied to the opposite surface of the surface in contact with the aforementioned adhesive layer is 90 counts or more at the peak count level + H = 0.5 μm, and is at the peak count level + H = At 1.5 μm, it is a roughening processor of 30 counts or more.

Fig. 1 is a schematic cross-sectional view showing the functional adhesive sheet of the embodiment. The functional adhesive sheet has a support 10 on which the functional layer 11 is formed, and the separator 20, and an adhesive layer 12 is formed between the support 10 and the separator 20. The separator 20 is a release-coated surface 21 on the surface in contact with the adhesive layer 12, and a roughening treatment layer 23 is formed on the opposite surface (non-release surface). Hereinafter, embodiments of each component will be described.

The support used in the functional adhesive sheet of the present invention is exemplified by a paper or plastic film. The types of paper are listed as Daolin paper, gravure paper, art paper, coat paper, synthetic paper, etc., and the plastic film is exemplified by polyester, polycarbonate, acrylic, and three. Ethylene cellulose, polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyamine, polyimine, vinylidene chloride-vinyl chloride copolymer, and the like. Further, such a support may contain various ultraviolet absorbers, antioxidants, anti-aging agents, slip agents, and the like which are generally used, or may have a layer containing the above.

The thickness of the support body cannot be generalized depending on the use, but it is considered to be 10 μm to 350 μm in consideration of functional treatment such as printability, light diffusibility, and light anti-glare property. And consider the interval described later When the peeling property of the sheet is easy, it is preferably about 30 μm to 188 μm.

The functional layer is laminated on one surface of the support, on the opposite side of the surface on which the adhesive layer is disposed, imparts a specific function to the support, and strengthens the function of the support itself, and can be adopted according to the function to be imparted. Various layers are formed. For example, when the functional layer is a layer for improving printability, a layer which is excellent in adhesion or absorbability with printing ink or carbon powder can be provided depending on the type of printing. The layer that improves the printability is a layer called an easy-to-adhere layer of printing ink in lithographic or screen printing, and a layer called an ink-acceptable layer in thermal transfer printing or inkjet printing, in dry and wet In the case of electrophotographic printing, a layer called a toner receiving layer can be formed by a known material.

Further, the layer for improving or imparting optical characteristics such as light diffusibility, antiglare property, and antireflection property may be a light diffusion layer, an antiglare layer, or an antireflection layer, and the layer for imparting hardness or elasticity may be hard coated. A layer such as a layer or an elastomer layer that absorbs light of a predetermined wavelength or the like may be an ultraviolet absorbing layer or an infrared absorbing layer. As long as one functional layer does not hinder each other's functions, it may have a plurality of functions, and may also laminate functional layers of a plurality of layers.

The adhesive layer is a layer formed by attaching the functional adhesive sheet of the present invention to a desired adherend and the main component is composed of an adhesive. As the adhesive, an acrylic adhesive, a polyoxynoxy adhesive, a urethane-based adhesive, a rubber-based adhesive, or the like which are generally used is used. In addition, an adhesive having antistatic properties can also be used. The thickness of the adhesive layer is not particularly limited, and it is preferably 2 μm to 60 μm, preferably 5 μm to 40 μm, in consideration of the adhesion and peelability of the functional adhesive sheet to the adherend.

The adhesive layer generally dissolves or separates the above adhesive as needed. The coating liquid is dispersed in a solvent, and the coating liquid is applied onto the opposite surface of the support and the surface having printability by a conventional coating method, and dried.

The separator of one of the constituent elements of the functional adhesive sheet of the present invention is bonded to the adhesive layer between the functional adhesive sheet of the present invention and the adhesive layer, and is on one side of the substrate. The surface in contact with the adhesive layer has a release-treated surface and the other surface has a roughened layer.

The substrate of the separator is exemplified by polyethylene laminated paper, or polypropylene, polyethylene, polyester, polycarbonate, triacetyl cellulose, polyvinyl chloride, acrylic, polystyrene, polyamine, polyfluorene. Plastic film such as imine, vinylidene chloride-vinyl chloride copolymer. The thickness of the separator is considered to be easy to peel off from the functional adhesive sheet, and is preferably from 10 μm to 250 μm, preferably from 25 μm to 125 μm.

The release-treated surface can be obtained by mixing a resin having a good mold release property such as a fluorine-based or polyfluorene-based resin or a release agent such as a fluorinated oil into a resin, and dissolving or dispersing it in a solvent to form a coating liquid. Coating Method This coating liquid is applied to the surface of a substrate and dried to form. The thickness of the coating layer is not particularly limited, but is preferably about 0.03 to 1.0 μm in order to impart appropriate mold release property and to prevent the release agent from permeating the separator and floating on the roughening layer side.

The roughening layer formed on the surface opposite to the mold release surface (non-release surface) is formed by coating the release sheet after the mold release treatment in a roll form for transfer onto the non-release surface a release agent for protecting the functional layer in contact with the non-debonding surface. Therefore, the roughening layer is formed by a resin layer formed by coating a non-release surface, and the surface is made to have a specific surface. The roughening of the shape. Hereinafter, the surface shape of the roughened layer will be described.

The peak count value Pc of the roughening layer is 90 or more at the peak count level + H = 0.5 μm, and is 30 or more at the peak count level + H = 1.5 μm. Further, it is more preferably 120 counts or more, more preferably 140 counts or more, when the peak count level is +H = 0.5 μm. Further, it is preferably 45 or more, more preferably 60 or more, at the peak count level + H = 1.5 μm.

By setting the peak count value Pc to 90 counts or more at the peak count level + H = 0.5 μm, and the roughening layer of 30 count or more at the peak count level + H = 1.5 μm, the demolding component can be suppressed. Secondary transfer, and can suppress functional defects. The reason is considered as follows.

The peak count value Pc is 90 or more in the case of +H=0.5 μm, and is 90 or more in the number of peaks where the peak value of the peak value of +0.5 μm is parallel to the center line of the cross-sectional curve and the thick curve intersects. Since the coating film has a large number of mountains, the release component which is floated out is less likely to accumulate on the surface of the coating film (in the state of a plurality of valley portions accumulated between the mountain and the mountain). However, in the case where the number of peaks is large and the peaks are low, the contact between the surface of the coating film and the functional surface cannot be prevented. On the other hand, the peak count value Pc is 30 counts or more when =H=1.5 μm, and the number of peaks crossing the peak value of the +1.5 μm peak line and the thick curve are parallel to the center line of the profile curve. More than one. In such a coating film, since the mountain is high, the contact between the surface of the coating film and the functional surface can be easily prevented. However, when the number of mountains is higher, the amount of mold release will accumulate between the peaks and peaks. The surface of the coating film is easily accumulated on the surface of the coating film.

On the other hand, as described in the present invention, it is considered that by simultaneously setting a mountain peak and a high peak which can be specified by the specific peak count value Pc, the mold release component is less likely to accumulate on the surface of the coating film, and the surface of the coating film is easily prevented. The contact with the functional surface prevents the release component of the non-release surface transferred to the separator from being secondarily transferred onto the functional surface of the support.

Further, the upper limit of the peak count value Pc of the roughening layer is preferably 200 counts or less when the peak count value level + H = 0.5 μm, and 130 counts when the peak count value level + H = 1.5 μm. the following. Further, when the peak count value level + H = 0.5 μm, it is preferably 180 or less, and more preferably 160 or less. Further, when the peak count value level + H = 1.5 μm, it is preferably 100 counts or less, more preferably 70 counts or less.

By setting the peak count value Pc to 200 counts or less at the peak count level + H = 0.5 μm, and suppressing the roughening layer of 130 count or less at the peak count level + H = 1.5 μm. The secondary transfer of the release component easily suppresses functional defects. When the peak count value of the peak count value level becomes large, it is considered that since the height of the mountain peak is constant but the valley depth is shallow, the surface of the coating film becomes flat, so that the mold release component in the flat valley portion is easy. Secondary transfer.

Further, the arithmetic mean slope RΔa of the roughened layer is preferably 0.25 or more and 0.45 or less. Since the slope of the peak of the coating film is within a certain range, the released mold release component is less likely to accumulate on the surface of the coating film, and the secondary transfer of the mold release component is suppressed, and the functional failure can be suppressed.

Moreover, the arithmetic mean slope RΔa of the present invention is based on the United States. Institute of Mechanical Engineering ASME B46.1 (1995). The arithmetic mean slope R Δa means a section length measurement L obtained from the measurement of the center line average roughness Ra of the coating film, and the slope portion is obtained by differentiating the slope portion, and the absolute value of each point of the curve is obtained. , the arithmetic mean of the majority of the absolute values. In other words, the arithmetic mean slope R Δa is a profile curve function g(x) obtained by taking the coordinate in the measurement direction of the profile curve as x, and the measurement length is L as the value obtained by the following equation.

RΔa=(1/L)∫ _O ^L |(d/dx)g(x)|dx

The method of forming the roughened layer may be a method of forming a roughened layer by adding a roughening agent to a resin component by coating, or applying an embossing treatment to the surface of the layer formed of the resin. Or sandblasting method. When the roughening layer is formed using a roughening agent, the thickness of the layer or the type of the roughening agent used (including the average particle diameter and the particle size distribution) is adjusted so as to satisfy the peak count value. In the embossing process, an embossing roll having a desired surface shape (a shape in which the shape is irregularly reversed by a peak count value) is formed by an ultra-small machine manufacturing technique. Further, in the case of sand blasting, a method of performing treatment or the like in a plurality of stages in which the types (materials or particle diameters) of the abrasive used in the treatment are different may be employed.

The resin component contained in the roughening layer is exemplified by a vinyl chloride resin, a vinyl acetate resin, a vinylidene chloride resin, a polyester resin, a urethane resin, a polyamide resin, and a poly Styrene resin, acrylic resin, cellulose resin, acetal resin, epoxy A thermoplastic resin such as a resin, a phenol resin, a melamine resin or a polysiloxane resin, or a thermosetting resin, an ultraviolet curable resin, an electron beam curable resin, or the like may be used alone or in combination of two or more. .

When a roughening agent is used, it is exemplified as calcium carbonate, magnesium carbonate, aluminum hydroxide, magnesium hydroxide, titanium oxide, cerium oxide, aluminum oxide, clay, kaolin, perlite, calcium sulfate. Inorganic fine particles such as barium sulfate, calcined alumina, calcium citrate, talc, mica titanium dioxide, or zirconium oxide, or acrylic resin particles, polyfluorene-based resin particles, nylon resin particles, styrene resin particles, and polyethylene Resin particles such as resin particles, benzofluorene-based resin particles, and urethane-based resin particles. These may be used alone or in combination of two or more. In particular, the inorganic particles are preferably used because they are excellent in the effect of suppressing the release of the release component on the non-release surface of the separator and the transfer to the functional surface of the support.

The average particle diameter of the roughening agent cannot be generalized depending on the thickness of the roughened layer, but is preferably from 1 μm to 20 μm, more preferably from 2 μm to 10 μm, still more preferably from 3 μm to 5 μm. Further, the particle size distribution of the particle size of the roughening agent is wider, and the coefficient of variation of the particle diameter is preferably more than 10%. Further, the amount of the roughening agent to be added may not be uniform depending on the type or particle diameter of the roughening agent, but it is preferably from 1 part by weight to 50 parts by weight, more preferably 5 parts by weight based on 100 parts by weight of the resin component. It is preferably from 30 parts by weight to 15 parts by weight, more preferably from 8 parts by weight to 15 parts by weight. Further, the thickness of the roughening treatment layer is not particularly limited as long as it is combined with the average particle diameter of the roughening agent to be used, but is preferably from 0.1 μm to 18 μm, more preferably from 0.5 μm to 10 μm. So that the flat The average particle diameter, the added amount, and the thickness are in the above range, and the peak count value Pc of the roughened layer is easily adjusted to the range of the present invention, and it is easy to suppress the migration of the release component toward the functional surface.

In addition to the resin component and the roughening agent described above, the roughening layer may be added with a conductive agent, a colorant, an antistatic agent, a crosslinking agent, a leveling agent, or a defoaming agent within a range that does not impair the above properties. Additives such as agents. In particular, in order to impart antistatic properties so that the printing sheets or dust or the like do not adhere to static electricity, it is preferable to add a conductive agent such as a metal fine powder or an antistatic agent such as a surfactant or an antistatic resin.

When the roughening layer is subjected to the roughening treatment using the above-mentioned resin or roughening agent, the roughening agent and optionally added additives may be dissolved or dispersed in a solvent by a conventional coating method. The resulting coating liquid is formed by drying. When the roughening agent is not used, the resin is formed into a layer, and then embossing or sandblasting is performed.

Next, a method of manufacturing the functional adhesive sheet of the present invention will be described. Fig. 2 shows an example of a method of manufacturing a functional adhesive sheet. First, the release-treated layer 21 is formed on one surface of the substrate 25 of the separator 20 and wound into a roll shape (Fig. 2(a)). On the other hand, the functional layer 11 is formed on the support 10 and wound in a roll shape (Fig. 2(b)). Next, the separator 20 and the support member 10 on which the functional layer 11 is formed are respectively wound out from the roll, and the two are laminated via the adhesive layer. Thereby, first, as shown in FIG. 2(c), a roughening layer 23 is formed on the surface of the separator 20 opposite to the mold release treatment layer 21, and then an adhesive layer 12 is formed on the release treatment layer 21 of the separator. The adhesive layer 12 is laminated to the surface of the support 10 opposite to the functional layer 11 (Fig. 2(d)).

2(c), although the adhesive layer 12 is formed on the release-treated layer 21 of the separator 20, the adhesive layer 12 may be formed on the surface of the support 10 opposite to the functional layer 11, and The surface of the release sheet 20 on which the release treatment layer 21 is formed is opposed to the adhesive layer 12 and laminated.

2, the case where the roughening layer 23 is formed on the non-release surface of the spacer 20, and the spacer 20 is laminated with the support 10 on which the functional layer 11 is formed, but the spacer 20 may be used. After laminating with the support 10 on which the functional layer 11 is formed, a roughening layer 23 is formed on the non-release surface of the separator 20.

The functional adhesive sheet having such a structure is stored in a roll shape so as to be placed on the roughening layer 23 side or the functional layer 11 side inside. In the state of being wound into a roll, although the roughening layer 23 is in contact with the functional layer 11, the roughening layer 23 can prevent the functional layer 11 from being transferred to the non-release surface even when the separator is stored. Secondary transfer. When the functional adhesive sheet is used, since the protected adhesive layer 12 is peeled off at the interface with the release surface 21 of the separator 2, the exposed adhesive layer 12 is attached to the desired adherend, and will be formed. The support 10 having the functional layer 11 is attached to the desired adherend.

[Examples]

The invention is further illustrated by the following examples. In addition, "parts" and "%" are weight basis unless otherwise specified.

1. Production of functional adhesive sheets

On a single side of a 75 μm thick polyester film (S-10, Toray), a solvent-dissolved polyoxyl resin (SRX370: Toray. Dowconing. Silicone) and a catalyst (SRX212: Toray. Dowconing) were applied. .Silicone Company), dried to form a release-treated layer having a thickness of 0.5 μm, and wound into a roll to form a separator. The separator wound into a roll was stored for 7 days.

Next, a 500% alumina sol (Kawasaki Precision Chemical Co., Ltd.) was added to polyvinyl alcohol (GOHSENOL KH-17: Japan Synthetic Chemical Industry Co., Ltd.) by a Mayer coater method, and adjusted to The 10% solution was applied to a transparent polyester film (T600E, Mitsubishi Plastics Co., Ltd.) having a thickness of 50 μm and dried to form an ink receiving layer having a thickness of 5 μm to obtain an ink jet printing material. The inkjet printing material is also stored in a state of being wound into a roll.

Then, the separator which was stored in the form of a roll as described above was taken up from the roll, and coated on the surface opposite to the release surface-treated layer by a bar coating method so as to have a thickness of 2 μm after drying. The roughening layer coating liquids of Examples 1 to 4 and Comparative Examples 1 to 4 were dried to form a roughened layer. Next, an acrylic adhesive (manufactured by Japan CARBIDE Industrial Co., Ltd., product name: NISSETSU KP-1410) which was dissolved in a solvent was applied onto the release-treated layer of the separator, and dried to form an adhesive layer having a thickness of 15 μm. The functional adhesive sheets of Examples 1 to 4 and Comparative Examples 1 to 4 were produced by laminating the surfaces of the above-described inkjet printing material opposite to the ink receiving layer. These functional adhesive sheets were also wound into a roll at the time of production, and were stored in this state for 7 days.

<Roughening layer coating liquid>

. Thermoplastic polyester resin 8 parts (BTRON 200, Toyobo Co., Ltd., 100% solid content)

. 1 part of the roughening agent shown in Table 1

. Dilution solvent 91 parts

2. Evaluation

The following evaluations were performed on the functional adhesive sheets obtained in Examples 1 to 4 and Comparative Examples 1 to 4. The results are shown in Table 2. Further, the cross-sectional curves of the roughening treatment layers of Example 1 and Comparative Example 2 are shown in Figs. 4 and 5 . In addition, the profile curve was obtained by measuring the center line average roughness Ra according to JIS B0601:2001 using a stylus type surface roughness measuring machine (SURFCOM 1500SD2-3DF: Tokyo Precision Co., Ltd.).

(1) Peak count value of the roughened layer Pc

The center line average roughness Ra of the roughened layer of the separator of the functional adhesive sheet is determined, and the peak count value is set at a distance from +H=0.5 μm and +H=1.5 μm in parallel to the center line of the obtained profile curve. The position line is counted as 1 mountain peak at the point where the peak count value level line intersects the roughness curve, and the number of peaks per 4 mm is counted to determine the peak count level + H = 0.5 μm and +H = 1.5 Peak count value Pc of μm.

(2) The arithmetic mean slope RΔa of the roughened layer

The center line average roughness Ra of the roughened layer of the separator of the functional adhesive sheet was measured, and the measured length L (4 mm) was taken from the obtained cross-sectional curve, and the extracted portion was differentiated to obtain a tilt curve. Next, based on the curve, the arithmetic mean slope RΔa is calculated by the following equation.

RΔa=(1/L)∫ _O ^L |(d/dx)g(x)|dx

(3) Uneven printing of the ink receiving layer

An ink-receiving layer of a functional adhesive sheet was printed using an inkjet printer (Luxel Jet, FUJI FILM) to evaluate uneven printing. The evaluation of the printing unevenness is described as "◎" in the case where no unevenness is generated, and "○" is generated when the printing unevenness is slightly caused, and the printing unevenness is recorded as "X". The results are shown in Table 2.

3. Discussion

It can be understood from Table 2 as follows.

The functional adhesive sheets of Examples 2 to 4 have a peak count value Pc applied to the opposite surface of the surface of the separator which is in contact with the adhesive layer, and are 90 count or more at the peak count level + H = 0.5 μm, and are in the peak meter. When the number is +H=1.5 μm, it is a roughening layer of 30 or more. Therefore, printing unevenness is slightly generated in the ink receiving layer, but there is no hindrance.

In particular, the peak count value Pc of the roughened layer of the functional adhesive sheet of the first embodiment is 140 counts or more at the peak count value level + H = 0.5 μm, and 60 counts or more when +H = 1.5 μm. No printing unevenness was produced in the ink receiving layer.

On the other hand, the functional adhesive sheets of Comparative Examples 1, 3 and 4 have not reached 90 counts due to the peak count value Pc of the roughened layer at the peak count value level + H = 0.5 μm, and are +H = 1.5 μm. Not up to 30 counts Therefore, the ink receiving layer is unevenly printed. Further, in the functional adhesive sheet of Comparative Example 2, since the peak count value Pc of the roughened layer is 30 counts or more at the peak count value level + H = 1.5 μm, it is less than 90 counts at +H = 0.5 μm. Therefore, uneven printing occurs in the ink receiving layer.

10‧‧‧Support

11‧‧‧ functional layer

12‧‧‧Adhesive layer

20‧‧‧Isolation

21‧‧‧ release treatment layer

23‧‧‧Rough layer

25‧‧‧Isolation sheet substrate

Claims (5)

A functional adhesive sheet having a support body, an adhesive layer and a separator in sequence, and the support body is a functional adhesive sheet having a functional layer on a surface opposite to a surface in contact with the adhesive layer, which is characterized by the foregoing The separator is subjected to a mold release treatment on the surface in contact with the aforementioned adhesive layer, and a peak count value Pc is applied on the opposite surface of the surface in contact with the adhesive layer at a peak count level + H = 0.5 μm. The time is 90 counts or more, and when the peak count level + H = 1.5 μm, it is a roughening processor of 30 count or more. The functional adhesive sheet of claim 1, wherein the peak count value Pc of the roughening treatment of the spacer is 200 counts or less at the peak count level + H = 0.5 μm, and the peak count level + H = 1.5 When it is μm, it is 130 count or less. A functional adhesive sheet having a support body, an adhesive layer and a separator in sequence, and the support body is a functional adhesive sheet having a functional layer on a surface opposite to a surface in contact with the adhesive layer, which is characterized by the foregoing The spacer forms a roughening layer containing a roughening agent and a resin on the opposite surface of the surface in contact with the adhesive layer, and the surface peak value Pc of the roughening layer is at a peak count level + H = 0.5 When it is μm, it is 90 counts or more, and when the peak count level is +H=1.5 μm, it is a rough surface of 30 count or more. The functional adhesive sheet of claim 3, wherein the surface of the roughening layer is a peak count value Pc of 200 count or less at a peak count level + H = 0.5 μm, and at a peak count level + H = 1.5 μm It is 130 counts below the rough side. The functional adhesive sheet according to claim 3 or 4, wherein the roughening layer contains a resin and inorganic particles, and contains 5 to 30 parts by weight of inorganic particles having an average particle diameter of 2 μm to 10 μm with respect to 100 parts by weight of the resin component.