JP5737804B2 - Sticky functional film - Google Patents

Description

The present invention relates to a sticking decorative film that can be repeatedly applied or peeled off on a smooth surface by applying a printing function to a sticking functional film provided with a silicone layer on a base material. Further, the present invention relates to an adhesive functional film provided with a function other than printing, for example, a specific function such as ultraviolet blocking or infrared blocking. In addition, the present invention relates to a sealing material and a cushioning material used in a wide industrial field.

A sticky functional film having a silicone layer on a substrate is a decorative film that can be easily stuck or peeled off many times on a smooth surface such as a window by printing on the substrate. (Patent document 1) Moreover, it becomes various adhesive functional films by providing a specific function to a base material and / or lamination. Those provided with a silicone layer on a base material or those provided with a hard coat layer on a base material opposite to the silicone layer are attached to a liquid crystal screen and used as a protective film for the screen.
As other applications, adhesive functional films having a silicone layer provided on a substrate are used as sealing materials, cushioning materials, and the like as industrial materials in various fields. (Patent Document 2) However, the base material made of plastic and the silicone layer are not so familiar, and there is a problem of peeling at the interface between the base material and the silicone layer during use. Therefore, the surface of the substrate is treated with actinic radiation such as corona discharge treatment, ultraviolet irradiation treatment, plasma treatment, flame treatment, etc., or an easy-adhesion film in which an easy-adhesion layer made of a compound that improves adhesion is laminated on the surface of the substrate. A way to use was provided. However, when adhered to the adherend, there was a problem that the adhesive force increased with time and the silicone layer was peeled off from the adherend. Furthermore, the same problem occurred remarkably in direct sunlight.

No. 6-21711 JP-A-10-95071

The present invention solves the above-mentioned problem, and even if the adhesive functional film is used outdoors, indoors, etc., the adhesive function does not decrease the adhesive force between the base material and the silicone layer. A functional film is provided. Furthermore, the present invention provides an adhesive functional film in which the adhesion between the silicone layer and the adherend is not increased even in direct sunlight.

1st invention is the adhesive functional film for glass which laminated | stacked the adhesive bond layer and the silicone layer on at least one side on the base material, The acid value of resin contained in an adhesive bond layer is the range of 7-110. And a sticking function for glass comprising a polyorganosiloxane obtained from a resin selected from a polyester resin having a carboxylic acid group, wherein the silicone layer is crosslinked by a hydroxyl reaction of a vinyl group and a SiH group. It is a sex film.
The second invention is a silicone comprising a linear polyorganosiloxane having a vinyl group only at both ends, and a silicone comprising a linear polyorganosiloxane having a vinyl group at both ends and side chains; It is obtained by crosslinking at least one silicone selected from a silicone comprising a branched polyorganosiloxane having a vinyl group only at the terminal and a silicone comprising a branched polyorganosiloxane having a vinyl group at the terminal and side chain. It is an adhesive functional film for glass according to a first invention.

The pasted functional film of the present invention can be printed on a smooth surface such as a glass window, and can be repeatedly pasted and peeled. Since the adhesive force between the base material and the silicone layer is strong, there is no problem that only the silicone layer remains on the adherend even if the pasted place is peeled off from the adherend regardless of the outdoor room.

  In addition to the use of sealing materials and cushioning materials, adhesive functional films that have a specific function are UV cut film, heat ray cut film, electromagnetic wave cut film, antistatic film, inkjet ink receiving film, and LCD screen protection. It can be used for various purposes such as film.

If the base material used by this invention is a film which consists of various plastics, it will not specifically limit. Examples thereof include films made of polyolefin, polyester, polyamide, polycarbonate, fluororesin, polyphenylene oxide, polyimide, polyamideimide, acrylic resin, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, etc., but are not limited thereto. It is not a thing. A polyester film is preferably used from the viewpoints of handleability, improvement of adhesive strength with the silicone layer, and cost. The thickness of the substrate may be appropriately selected according to the use, but usually a thickness in the range of 4 to 400 μm is used.

As this polyester film, the easily adhesive polyester film which processed the surface with the active ray, or laminated | stacked the compound which improves adhesiveness on the surface of a polyester film can be used. Examples of the treatment method using actinic radiation include corona discharge treatment, ultraviolet irradiation treatment, plasma treatment, flame treatment, and the like. As the easy adhesion component of the easy adhesion layer laminated film, polyester-based, polyurethane-based, polyacryl-based compounds, Or these compounds are mentioned. The method for laminating the easy-adhesion layer may be either a so-called in-line method for laminating at the time of film formation, or a so-called offline method for laminating on the film formed. Moreover, what processed the surface of the easily bonding layer of the film which laminated | stacked the easily bonding layer with said active ray can be mentioned, However, It is not limited to these.

Even if a silicone layer is laminated on a substrate for the treatment of active rays or an easy-adhesion layer on the substrate, the adhesive force between the substrate and the silicone layer is not sufficient, and it is peeled off when a light resistance test is performed. It is what will end up. As a countermeasure, an adhesion improver is blended in the silicone layer. However, the adhesive layer of the present invention adheres the base material and the silicone layer with a strong adhesive force even without adding an adhesion improver to the silicone layer, and the base material does not peel off from the silicone layer even in the light resistance test. It shall be not.

For the adhesive layer, a resin selected from polyester resins having an acid value in the range of 7 to 110 is used. Two or more polyester resins may be used in combination. When the acid value is less than the above range, the adhesion between the silicone layer and the adherend becomes too high with time, and the film of the present invention is hardly peeled off when peeled off from the adherend. A polyester resin having an acid value exceeding the above range is difficult to produce. A more preferable acid value is a polyester resin in the range of 8 to 100.

The polyester resin is preferably a water-soluble polyester resin or a water-dispersed polyester resin. The reason for this is that when an antistatic function is imparted to the adhesive layer, the adhesive layer coating solution is more water-based than the organic solvent type, and the coating solution has a high dispersibility in water with a high antistatic effect. A large amount of an antistatic agent can be contained. For example, by including 40 to 70% by weight of an antistatic agent in the solid content of the adhesive layer, uneven coating of the silicone coating liquid applied on the adhesive layer can be prevented, When the silicone layer of the adhesive functional film of the present invention is attached to an adherend and then peeled off, generation of static electricity, so-called peeling charging can be prevented.

By using the above resin, the acid group in the resin and the SiH group remaining in the silicone layer undergo a crosslinking reaction, the number of SiH groups remaining after the crosslinking reaction of the silicone itself is reduced, and the adherend is adhered at the time of sticking. An increase in adhesion due to the reaction between the surface, particularly the glass surface and the silicone layer, can be prevented. Examples of the acid group in the polyester resin include a carboxylic acid group, a sulfonic acid group, and a phosphoric acid group. As the acid group, a carboxylic acid group is particularly preferable.

The thickness of the adhesive layer is preferably in the range of 0.01 to 5 μm. More preferably, it is the range of 0.1-3 micrometers. When the thickness of the adhesive layer is less than the above range, the silicone layer is easily detached from the substrate. When the above range is exceeded, the adhesive layer itself becomes inflexible and becomes a hard layer, and the adhesion of the adhesive layer to the base material becomes worse.

A thermoplastic resin other than the above resin may be added to the adhesive layer as long as the effect of the present invention is not lowered. Examples of the thermoplastic resin include acrylic resin, polyamide resin, phenol resin, xylene resin, ethylene-vinyl acetate copolymer, alkyd resin, urethane resin, polycarbonate resin, and the like, and one or more of these may be used. .

  As the silicone used in the silicone layer of the present invention, for example, an addition polymerization type silicone polymer can be used. Examples of the addition polymerization type silicone resin include those polymerized by a platinum catalyst. As a property of the silicone layer that meets the object of the present invention, it is required that the surface of the silicone layer be along the unevenness even with respect to the unevenness of the surface of the adherend, which is flexible like rubber. Further, when peeling, it is required to be easily peeled with a small peeling force.

  As silicone having such properties, a silicone composed of a linear polyorganosiloxane having vinyl groups only at both ends, a silicone composed of a linear polyorganosiloxane having vinyl groups at both ends and side chains, and a terminal. When using a product obtained by crosslinking at least one silicone selected from a silicone comprising a branched polyorganosiloxane having only a vinyl group and a silicone comprising a branched polyorganosiloxane having a vinyl group at the terminal and side chain. good.

  As one form of these silicones, a linear polyorganosiloxane having vinyl groups only at both ends is a compound represented by the following general formula (Formula 1).

  (Wherein R represents the following organic group, and n represents an integer)

  (Wherein R represents the following organic group, m represents an integer)

The organic group (R) bonded to the silicon atom other than the vinyl group may be different or of the same type. Specific examples include alkyl groups such as methyl, ethyl and propyl groups, and aryl groups such as phenyl and tolyl groups. Or a monovalent hydrocarbon group other than the same or different unsubstituted or substituted aliphatic unsaturated group in which part or all of the hydrogen atoms bonded to the carbon atoms of these groups are substituted with a halogen atom, a cyano group, or the like. Preferable examples include those having at least 50 mol% of a methyl group. These diorganopolysiloxanes may be used alone or as a mixture of two or more thereof.

  A silicone comprising a linear polyorganosiloxane having vinyl groups at both ends and side chains is a compound in which a part of R in the above general formula (Formula 1) is a vinyl group. Silicone comprising a branched polyorganosiloxane having a vinyl group only at the terminal is a compound represented by the above general formula (Formula 2). A silicone comprising a branched polyorganosiloxane having vinyl groups at the terminals and side chains. A compound in which a part of R in the above general formula (Formula 2) is a vinyl group.

  Here, a known crosslinking agent may be used for the crosslinking reaction. Examples of the crosslinking agent include organohydrogenpolysiloxane. Organohydrogenpolysiloxane has at least three hydrogen atoms bonded to silicon atoms in one molecule, but from a practical viewpoint, one having two ≡SiH bonds in the molecule is 50% by weight of the total amount. It is preferable that the remainder contains at least three ≡SiH bonds in the molecule.

  The platinum-based catalyst used for the crosslinking reaction may be a known one, including chloroplatinic acid such as chloroplatinic acid and chloroplatinic acid, alcohol compounds of chloroplatinic acid, aldehyde compounds or chloroplatinic acid and various olefins. And chain salts. The crosslinked silicone layer has flexibility such as silicone rubber, and this flexibility facilitates the close contact with the adherend.

  The shape of the commercially available silicone product according to the present invention includes a solventless type, a solvent type, and an emulsion type, but any type can be used. Above all, the solventless type is very advantageous in terms of safety, hygiene, and air pollution because it does not use a solvent. In addition, the coating thickness of the silicone layer needs to exceed 1.1 μm, and in some cases, it is provided with a thickness of several millimeters. Therefore, in the case of solvent type silicone or emulsion type silicone, the solvent is dried at the time of coating. Therefore, it is preferable to use a solventless silicone as the silicone used in the present invention.

As described above, the adhesive force between the adhesive layer and the silicone layer of the present invention has a sufficiently high adhesive force. However, if a higher adhesive force is required, a small amount of adhesive improver is added to the silicone layer. May be included. This adhesion improver is preferably a compound containing a functional group active against radical reaction. Examples of this compound include acrylic acid derivatives, methacrylic acid derivatives, and allyl derivatives. Among these derivatives, compounds having two or more unsaturated bonds, particularly three or more are preferable. These compounds are widely used as rubber cross-linking agents such as polyhydric alcohol acrylic acid esters and methacrylic acid esters, polyhydric carboxylic acid allyl esters, triallyl isocyanurate, triallyl cyanurate and the like. Can be mentioned.

A separator such as a resin film can be bonded to the surface of the silicone layer in order to prevent contamination of the surface of the silicone layer and adhesion of foreign substances, or to improve handling of the adhesive functional film.

In general, the thickness of the silicone layer is preferably in the range of 1.1 to 3000 μm.
If it is a display film for decoration, it is good in it being 1.1-50 micrometers preferably. When the thickness of the silicone layer is less than 1.1 μm, it is difficult to adhere to the adherend, and the shearing force in the adhesion surface direction of the adhesive functional film on the adherend is less than 1.0 N / cm ² , When sticking for a long time, the sticking functional film may be peeled off. When the thickness of the silicone layer exceeds 50 μm, the amount of silicone used increases, which is uneconomical in terms of cost.

  As for the thickness of the silicone layer when using it for industrial uses, such as a sealing material and a cushioning material, 30-500 micrometers is preferable. The adhesive functional film to which other specific functions are imparted appropriately sets the thickness of the silicone layer according to the application.

The adhesive layer is applied by coating and drying the above-mentioned various polyesters dissolved and dispersed in an optimum solvent. As a coating method for the adhesive layer coating solution and the silicone layer coating solution, a multi-stage roll coater represented by a three-offset gravure coater or a five-roll coater, a direct gravure coater, a bar coater, an air knife coater or the like is used as appropriate. Is done.

  In order to prevent contamination of the surface of the silicone layer and adhesion of foreign substances, and to improve the handling of the fixed sheet, a separator made of a resin film can be bonded to the silicone layer surface.

  The material of the adherend is generally glass, a resin plate, a metal plate, a painted plate or the like, and the surface of the adherend needs to be as smooth as possible. If the surface irregularities are large, it will be difficult for the silicone layer surface to follow the irregularities, making it impossible to adhere.

  The specific functions of the fifth invention are ultraviolet ray shielding property, infrared ray shielding property, electromagnetic wave shielding property, antistatic property, electrical conductivity, deodorizing property, deodorizing property, antibacterial property, printing property, ink acceptability, hydrophilic property, antifogging property. Property, water repellency, scratch resistance, thermal conductivity, etc.

Said specific function can be provided by making a functional agent contain in any one layer or multiple layers of said base material and lamination | stacking, or setting it as a functional layer.
Among the various functions described above, the ultraviolet blocking property is imparted by blending an inorganic or organic ultraviolet absorber into any one of the substrate and the laminate, preferably a transparent substrate. The obtained functional film can be applied to, for example, a window glass of a residence, a building, or a vehicle to absorb ultraviolet rays and prevent ultraviolet damage such as sunburn. In addition, it can be attached to the glass part of an art museum or a display case of a museum to suppress the deterioration of the display, or it can be attached to the surface of a poster, an advertising medium, a certificate or the like to prevent discoloration. It can also be applied to the surface of various photographs and color copies to suppress the discoloration, or it can be applied to a transparent part of a storage case for food or clothing to prevent deterioration.

The infrared shielding property is imparted by blending an inorganic or organic infrared absorber in any of the transparent substrate and the laminate. Further, a thin film of metal oxide may be formed on the surface of the base material to impart infrared reflectivity. When the functional film is applied to the window glass of a residence, building, or vehicle, the temperature rise in the room or vehicle can be suppressed, cooling efficiency can be improved, and it can be applied to the window glass of a showcase for freezing / refrigeration. When worn, the cooling efficiency is improved. In addition, it can be attached to the screen surface of a plasma display to block infrared rays generated by the plasma and prevent remote control malfunctions. Moreover, it sticks on the surface of glass or a transparent plastic plate, and uses it as an optical filter.

The electromagnetic wave shielding property is obtained by adding an inorganic or organic conductive agent or a magnetic material to any of the base material and the laminate, and by forming a metal or metal oxide thin film on the base material, It can be applied by laminating these fabrics or by combining these means. The obtained functional film is attached to various OA devices, home appliances, information devices, medical devices, and other display units and housing units, shields electromagnetic waves generated from the devices, and protects the human body. It also prevents malfunction of equipment due to electromagnetic interference. In addition, it sticks to the walls and other partitions of the space where hospital medical equipment, transportation facilities, improvement control systems, etc. are placed, and shields it from disturbing electromagnetic waves, thus preventing malfunction of the equipment.

Antistatic and conductive properties are imparted by either a base material or a laminate, preferably by adding an antistatic agent or conductive agent to the base material, or by forming a metal or metal oxide thin film on the base material. Is done. The obtained functional film is adhered to a window glass of a semiconductor factory, thereby preventing alkali ions from being emitted from the window glass and preventing dust from being adsorbed. In addition, by sticking to a partition such as a window glass or wall of a clean room, particle contamination is suppressed, and by sticking to a semiconductor chip tray or the like, a static electricity failure of the semiconductor is prevented.

The deodorizing property and deodorizing property are imparted by blending an inorganic or organic deodorant or deodorant into the base material or the laminate, preferably the base material. By sticking to the window glass and walls of vehicles, etc., the odor of cigarettes and excrement is eliminated and a comfortable space is created.

Antibacterial property is imparted by either a base material or a laminate, preferably by blending the base material with an inorganic or organic antibacterial agent, and by laminating an active layer containing a photocatalyst such as titanium oxide on the base material. . The functional film obtained is used to touch the hands of household appliances, OA equipment, stationery and other daily-use equipment and utensils, windows and walls of residences, hospitals, cafeterias, and other partitions or cooking utensils, cooking It sticks to the surface of a table, food container, storage, etc. to suppress the growth of bacteria.

Printability is provided by improving the adhesion of printing ink and toner by modifying the surface of the substrate. Further, by forming a hydrophilic polymer layer or a hydrophilic polymer layer in which porous fine particles are blended on the surface of the substrate, the acceptability of the inkjet ink is enhanced. The resulting functional film is used on posters and other advertising media depending on the contents of prints or copies, and on a whiteboard, wall, or bulletin board as a means of meeting materials, communication, or notification. can do.

The hydrophilicity and antifogging property are given by blending or laminating a hydrophilic agent and an antifogging agent on the substrate. Moreover, it provides by laminating | stacking a hydrophilic layer, an anti-fogging layer, or a photocatalytic active layer on the surface of a base material. The obtained functional film is stuck on the surface of various mirrors and used for preventing fogging. In addition, it is attached to the surface of windows and walls of houses, buildings, vehicles, etc., and used for self-cleaning and prevention of condensation. Moreover, it sticks on the surface of advertising media, such as a signboard, and gives self-cleaning property, and sticks it on the window of a refrigerated showcase, and uses it for prevention of dew condensation.

Water repellency is provided by forming a water repellent layer composed of a single fluorine compound or a composite of a fluorine compound and a photocatalyst on the surface of the substrate, and is used for the same purpose as the above hydrophilicity and antifogging property. The

Scratch resistance is imparted by forming a hard coat layer made of an organic or inorganic material or a composite thereof on the surface of the substrate. The obtained functional film is affixed to the surface of a liquid crystal display part or an input part of home appliances, OA equipments, information equipments, etc., for membrane switches, antiglare filters, touch panels and the like for protection. Moreover, it sticks and uses it for surface protection, such as a nameplate, a display board, a wall material, and a decorative board.

Thermal conductivity may be achieved by adding a thermally conductive filler to the laminate. Examples of the thermally conductive filler include aluminum oxide, boron nitride, aluminum nitride, zinc oxide, aluminum oxide, silicon carbide, quartz, and aluminum hydroxide. Etc. The resulting functional film has reduced characteristics due to heat generated from heat-generating electronic components such as power transistors and thyristors used in various electronic devices and integrated circuit elements such as IC, LSI, CPU, and MPU. Used as a heat dissipation film to prevent

In the present invention, any composite means of lamination other than the base material, the adhesive layer, and the silicone layer is optional. That is, the film obtained by individually molding may be bonded by an adhesive, a pressure-sensitive adhesive, or heat bonding, or may be directly integrated by a coating method, a topping method, an extrusion laminating method, or the like. This direct integration method is particularly preferable from the viewpoint of economy.

The present invention will be described more specifically with reference to the following examples.
[Formation of ink image-receiving layer]
The following image-receiving layer coating solution was dispersed on one side of a 50 μm-thick polyethylene terephthalate film with a disperser, and then coated and dried to form an image-receiving layer for an ink-jet printer having a thickness of 25 μm.
-Image receiving layer coating solution synthetic amorphous silica 4.2 parts by weight hydrophilic urethane resin 6.2 parts by weight polyacrylic ester aqueous solution (solid content 30%) 1 part by weight dicyandiamide resin aqueous solution (solid content 25%) 2 Parts by weight water 37.6 parts by weight methanol 49 parts by weight total 100 parts by weight

[Synthesis of adhesive layer resin]
The synthesis methods of the resins contained in the adhesive layers of Examples 1-4 and Comparative Examples 1-2 were as follows.
The raw material compounds shown in Tables 1 and 2 were charged into the reaction vessel in the amounts (mol parts) shown in Tables 1 and 2, and the esterification reaction was performed under a nitrogen stream at a pressure of 0.3 MPaG and a temperature of 260 ° C. for 3.5 hours. Went. To the obtained esterified product, antimony trioxide was added at 2.5 × 10 ⁻⁴ mol / acid content 1 mol, the pressure was reduced to 0.5 hPa, and a polycondensation reaction was performed at 280 ° C. for 3 hours to obtain a polyester. Next, to this polyester, the depolymerizing agents shown in Tables 1 and 2 were added in the amounts (molar amounts) shown in Tables 1 and 2 and subjected to a depolymerization reaction at 250 ° C. for 2 hours under normal pressure. A polyester resin having the following characteristics was obtained. Further, hot water at 90 ° C. was added to obtain a polyester aqueous solution having a solid content of 20%.
The synthesis method of the resin contained in the adhesive layers of Comparative Examples 3 to 4 was as follows.
The raw material compounds shown in Table 3 were charged in an amount (mol parts) shown in Table 3 and 5.0 × 10 ⁻² mol parts of azobisisobutyronitrile in a reaction vessel, and the mixture was 115 ° C. under nitrogen flow. Reacted for hours. After completion of the reaction, the mixture was neutralized with dimethylethanolamine in an equivalent amount, and further butyl cellosolve was added to obtain an acrylic copolymer solution having the characteristics shown in Table 2 having a solid content of 20%.

[Formation of adhesive layer]
The resin solutions of Examples 1 to 4 and Comparative Examples 1 to 4 were coated on the opposite surface of the substrate and dried to form an adhesive layer having a thickness of 0.3 μm.

[Formation of silicone layer]
On the adhesive layers of Examples 1 to 4 and Comparative Examples 1 to 4, the following silicone coating solution was applied, heated at 150 ° C. for 100 seconds to crosslink the silicone, and a silicone layer having a thickness of 25 μm. Was formed to produce an ink jet recording film.

100 parts by weight of a linear polyorganosilicone having vinyl groups only at both ends of the silicone coating solution
(Solventless type) (trade name "X-62-1347" manufactured by Shin-Etsu Chemical Co., Ltd.)
Platinum catalyst (trade name “CAT-PL-56” manufactured by Shin-Etsu Chemical Co., Ltd.) 2 parts by weight The performance of each sample was evaluated based on the following evaluation method.

[Method for measuring acid value of resin]
Weigh exactly 30 g of sample into an Erlenmeyer flask with a stopper. (Sg)
100 mL of a mixed solvent (toluene: methanol = 9: 1 Vol ratio) is added to dissolve the sample. To this, 1% phenolphthalein solution is added as an indicator, and a 0.1 mol / L alcoholic potassium hydroxide solution is titrated with the point of maintaining a red color for 30 seconds as the end point. (AmL)
Perform a blank test in the same manner. (BmL)

Acid value (mgKOH / g) = (A−B) × f × 56.1 / S

In the above formula, A: Amount of 0.1 mol / L alcoholic potassium hydroxide solution required for the sample (mL)
B: Amount used of 0.1 mol / L alcoholic potassium hydroxide solution required for the blank test (mL)
f: Molar concentration of 0.1 mol / L alcoholic potassium hydroxide solution S: Sampling amount (g)

Evaluation method 1. Light Resistance Test The silicone layer surface of a sample obtained by cutting the film of each example and comparative example into an appropriate size is attached to transparent glass. A cut sample attached to the glass irradiated for 100 hours in a carbon arc light resistance test for irradiating a carbon arc is prepared on the glass surface side.
A. Evaluation of Adhesiveness between Adhesive Layer and Silicone Layer The edge of the cut sample was rubbed with a finger, and the degree of peeling of the silicone layer was evaluated according to the following criteria. The evaluation results are shown in Table 1.
○: No peeling occurs.
(Triangle | delta): It peels partially from a base material.
X: Completely peeled off.

B. Evaluation of Peeling of Silicone Layer at the Time of Glass Adhesion A cut sample of polyethylene terephthalate film adhered to glass was peeled off by 180 ° peel, and the degree of peeling of the silicone layer against the glass was evaluated according to the following criteria. The evaluation results are shown in Table 1.
○: The silicone layer was completely peeled off from the glass.
Δ: Transition to glass partially occurred due to cohesive failure of the silicone layer.
X: Transition to glass occurred due to cohesive failure of the silicone layer on the entire surface of the sticking part.

2. Image-forming property In the samples of Examples 1 to 3 and Comparative Examples 1 to 5, the thickness of the sample was formed in order to protect the surface of the sample silicone layer formed on the PET film up to the image receiving layer, the adhesive layer, and the silicone layer. A 25 μm transparent PET film was bonded as a separator. Each sample was cut into A4 size to prepare a sheet sample. A full color image was formed on the sheet sample using an ink jet printer PM-900C (dye ink) manufactured by Seiko Epson. A clear full-color image could be formed on any sheet sample.

Claims (2)

In an adhesive functional film for glass in which an adhesive layer and a silicone layer are laminated on at least one surface on a substrate, the acid value of the resin contained in the adhesive layer is in the range of 7 to 110, and the carboxylic acid Adhesive function for glass, comprising a resin selected from polyester-based resins in which groups are present, and wherein the silicone layer is made of a polyorganosiloxane obtained by crosslinking by a hydroxyl reaction between a vinyl group and a SiH group Sex film. The silicone layer comprises a silicone composed of a linear polyorganosiloxane having vinyl groups only at both ends, a silicone composed of a linear polyorganosiloxane having vinyl groups at both ends and side chains, and a vinyl group only at the ends. It is obtained by crosslinking at least one silicone selected from a silicone composed of a branched polyorganosiloxane having a branched chain and a silicone composed of a branched polyorganosiloxane having vinyl groups at the terminals and side chains. The adhesive functional film for glass according to claim 1.