JPH0570748A - Pressure-sensitive adhesive sheet and its production - Google Patents

Abstract

PURPOSE:To provide a pressure-sensitive adhesive sheet excellent in adaptability for feeding paper to a high-speed nonimpact printer and cuttability with a slitter, a guillotine cutter, a die cutter or the like and a process for producing the same. CONSTITUTION:A die-cut pressure-sensitive adhesive sheet comprising a structure produced by laminating a surface base with a pressure-sensitive adhesive and a release sheet, wherein part of the die cuts are provided with cuts pierced to the release paper, and a process for producing the same by using a lip coater.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive sheet and a method for producing the same, and particularly to a pressure-sensitive adhesive sheet which is excellent in sheet-passing suitability in a high-speed non-impact printer and at the same time is excellent in cutting (cutting) suitability such as slitter, guillotine and die cut. The manufacturing method is related.

[0002]

2. Description of the Related Art Adhesive sheets are used for a wide range of purposes such as commercial use, office use, household use, and labels, stickers, stickers,
It is used after being processed into a patch. Generally, a pressure-sensitive adhesive sheet has a structure in which a pressure-sensitive adhesive layer is formed between a surface base material and a release base as shown in FIG. 1, and paper, film, metal foil or the like is used as the surface base material. As the release substrate, high-density base paper such as glassine paper, clay-coated paper, polyethylene laminated base paper, etc. coated with a release agent such as a silicone compound or a fluorine compound is used. As the pressure-sensitive adhesive, various kinds of rubber-based, acrylic-based, vinyl ether-based emulsion, solvent or solventless pressure-sensitive adhesives are used.

Among such pressure-sensitive adhesive sheets, the demand for pressure-sensitive adhesive sheets for non-impact printers for computer output is rapidly increasing with the progress of OA in recent years. Conventionally, as the paper suitability required for such a printer, paper suitability in a printer and processing suitability in a printing machine have been mentioned, and improvements and ingenuities have been made for each.

For example, when printing information with a non-impact printer, the toner is heat-fused to the paper. For that reason, tension is applied to the paper by a tension roll, or a suction device is applied to the heat plate together with a certain amount of air. The transfer is performed while increasing the adhesion. In the case of non-impact printers that use such a paper transfer method, as long as normal high-quality paper is used, no significant problems occur, but in the case of adhesive paper with low air permeability, a suction device is used. Excessive suction will increase the resistance to the transfer direction, and not only the problem that it will not be transferred smoothly, but also the excess coating will scrub off the coating agent and stain the inside of the printer.
There was a problem that it interfered with printing.

From the above circumstances, for example, Japanese Patent Laid-Open No. 57-10
5374, JP-A-62-260880, it has been proposed to provide a through hole or an adhesive or a hole penetrating a release sheet on the entire surface of the paper or a specific portion.
In the former case, as can be seen from FIG. 2, the pressure-sensitive adhesive protrudes from the through holes, the diameter of the through holes is non-uniform, and the toner comes out from the relatively large through holes, or unnecessary due to corona discharge treatment. There are problems such as the occurrence of charring. Furthermore, when not used immediately after corona discharge treatment but used for a certain period of time, the micropores are blocked by the exudation of glue during the stationary period, resulting in poor air permeability and the desired effect cannot be obtained. Also accompanies.

On the other hand, according to the latter proposal, a double-sided release sheet body is prepared by first placing a pressure-sensitive adhesive on the center and stacking release sheets on both sides of the pressure-sensitive adhesive, and then providing through-holes over the release sheets on both sides. One of the release sheets is peeled off, and then a surface base material is attached to obtain an adhesive sheet. In producing such a pressure-sensitive adhesive sheet, an extra processing step for providing a through hole is added, resulting in economical loss or reduction in work efficiency.

Since the surface base material is not provided with through-holes, air permeability is also lowered, and troubles such as poor running and jamming are likely to occur when printing is performed with a non-impact printer or the like on a sheet of sheets.

Further, when passing through a printer in the form of a continuous adhesive sheet (paper), the paper is deformed at the time of heat fixing of the toner, and the skew of the paper occurs after printing, which causes stacking failure. It was

Such an adhesive sheet is appropriately subjected to slitter cutting processing, guillotine cutting processing, die cutting processing or the like depending on the application. At the time of the processing, the adhesive adheres to the slitter cutting blade, the guillotine cutting blade, or the die-cut processing blade, and as a result, the work efficiency of the cutting processing decreases, and further, the adhesive adhered to the blade transfers to the sheet. When you wear it and print it with a printer, you cannot feed it smoothly, which causes the work efficiency to drop.

[0010]

DISCLOSURE OF THE INVENTION The present invention is directed to die cutting suitability and paper feeding (paper feeding) in a high-speed non-impact printer.
(EN) A pressure-sensitive adhesive sheet which is excellent in suitability and does not squeeze out an adhesive or the like during guillotine or slitter cutting, and a method for producing the same.

[0011]

DISCLOSURE OF THE INVENTION The present invention is a pressure-sensitive adhesive sheet in which a surface substrate, a pressure-sensitive adhesive and a release sheet are laminated, and a die-cut pressure-sensitive adhesive sheet penetrates part of the die cut to the release sheet. A pressure-sensitive adhesive sheet and a method for producing the same, characterized in that a cut line is provided.

[0012]

The release substrate used as the support of the release sheet used in the present invention includes high density base paper such as glassine paper; clay coated paper; polyethylene laminated base paper; synthetic resin film such as polypropylene and polyethylene terephthalate; Those having an undercoat layer formed for the purpose of preventing penetration of the release agent are used.

The main component of the undercoat layer is, for example, a water-dispersible acrylic ester copolymer resin containing 2 to 10% by weight of an emulsifier having a molecular weight of 1000 to 10000 and a glass transition temperature of -40 to + 30 ° C. Polymers are used. If necessary, the undercoat layer may include various water-soluble natural polymers such as cellulose derivatives and starch derivatives, synthetic polymers such as polyvinyl alcohol, defoaming agents, penetrants, wetting agents, and anti-blocking agents. Lubricant, leveling agent, hardener,
Thickeners, film-forming aids, antistatic agents, water-soluble plasticizers and the like can also be added as appropriate. The release sheet is manufactured by providing a release agent layer on the release substrate as described above.

The release sheet of the present invention has a coefficient of dynamic friction between the surface of the release agent layer on the release substrate and chloroprene rubber having a Shore A hardness of 65 ± 2 ° in accordance with JIS P8147.
It is important to use a release agent layer that is 2 or more. Incidentally, if the dynamic friction coefficient is less than 0.2, the adhesive tends to adhere to the working blade and the cutting surface, resulting in poor paper running in a high-speed non-impact printer, which is not desirable.

Specific examples of the release agent that gives such a dynamic friction coefficient include, for example, SD-7239, BY24-162 and LTC-3 manufactured by Toray Dow Corning Silicone Co., Ltd.
00B, LTC-350 A, LTC-350 G, LTC-370
G, BY14-403, BY14-405, BY14-407, BY
14-413, BY14-414, BY14-411, BY14-420
, Shin-Etsu Chemical Co., Ltd. KS-845, KS-770,
KNS-202A, KNS-305, KNS-316, KNS
-319, KNS-320, X-62-A232, X-62-1233
Etc.

The method for obtaining the pressure-sensitive adhesive sheet (laminate) of the present invention is a reverse roll coater or air knife coater in which a solvent-type pressure-sensitive adhesive, an emulsion-type pressure-sensitive adhesive or a hot-melt pressure-sensitive adhesive is placed on the release agent layer of the release sheet. Coating with a coating device such as a knife coater or die coater,
A pressure-sensitive adhesive layer is formed by drying, if necessary, and a surface base material is attached to finish.

By the way, as a coating device for obtaining the pressure-sensitive adhesive sheet of the present invention, the generally known and publicly-used devices as described above can be applied. In particular, a nozzle head having a doctor edge is arranged below the backing roll to apply the coating. By using a coater having a specification of spraying an adhesive with pressure from the nozzle head by a supply means of the liquid to be coated, a so-called lip coater, a streak caused by dirt on a metaling roll in a reverse roll coater, or air In the case of a knife coater, there is an advantage that streaks and uneven coating due to dirt on the blade of the air doctor can be eliminated, and blurring due to air inclusion in the knife coater can be eliminated. Furthermore, since the lip coater does not require paint circulation equipment for collecting paint and recycling it, energy saving and paint loss does not occur. This is one of the preferred embodiments.

As the pressure-sensitive adhesive used in the present invention, those known in the art can be appropriately used. JIS K630
Tensile strength and elongation according to 1 are each 3 kg / cm
It is preferable that the content of ² or more and 1000% or less is used because the adhesion of the adhesive to the cutting blade or the cutting surface is further suppressed when the adhesive sheet is cut.

Incidentally, specific examples of the adhesive showing such tensile strength and elongation are, for example, ACRONAL K-0672, K-0611, I- manufactured by Mitsubishi Petrochemical Badishe Co., Ltd.
0510, G-0412, Nicazole TS-1413, TS-1436, TS-1446, TS-144 manufactured by Nippon Carbide Industry Co., Ltd.
8. Cybinol X-490-213 manufactured by Saiden Chemical Co., Ltd.
E, X-490 -229 E, X-491 -267 E, X-491
-268E, X-491-279E, X-491-300E and the like can be mentioned.

Thus, the pressure-sensitive adhesive sheet of the present invention usually has a surface area of 30 to 300 g / m ² of high-quality paper, art paper, coated paper, cast paper, thermal paper, pressure-sensitive paper, film, metal foil, etc. By combining the base material with the pressure-sensitive adhesive and the above-mentioned release sheet, the cutability of the pressure-sensitive adhesive sheet and the protrusion of the pressure-sensitive adhesive can be prevented.

Further, as the peeling substrate and / or the surface substrate, it is desirable to arrange the fibers randomly so as to eliminate the orientation itself. When printing a continuous pressure-sensitive adhesive sheet using a release substrate and / or a surface substrate based on high-quality paper obtained by an ordinary Fourdrinier paper machine with a non-impact printer of the printing heat fixing system, the paper is When folded in the thickness direction, it tends to tilt significantly to the left and right. It is considered that this is because the dimensions were changed as a result of the stress strain being thermally relaxed. Therefore, in order to prevent tilting, it is necessary to minimize the stress strain of the non-uniformly made pulp fibers in the drying process of the wire part and the drier during paper making. For that purpose, a method of making the orientation angle of the fibers close to 0 ° or completely randomizing the orientation of the fibers to eliminate the orientation itself is conceivable, but the present inventors diligently studied and studied the latter method. As a result, it was found that there is a certain relationship between the tilt angle and the ratio of the maximum value and the minimum value of the transmitted microwave intensity.

That is, when the ratio of the maximum value and the minimum value of the transmitted microwave intensity is in the range of 1.0 to 1.3, preferably 1.0 to 1.2, in the printer of the heat fixing system, the inclination angle is 20 °.
It was found that the following was obtained, and it was possible to perform smooth printing with almost no jamming.

By the way, when the ratio of the maximum value and the minimum value of the transmitted microwave intensity exceeds 1.3, the inclination becomes severe, while 1.
When 0, the fibers have a completely random orientation, but in the actual machine making, they have some fiber orientation.
It cannot be 0. Further, since the fiber orientation pattern is determined by the papermaking conditions of the machine, it is necessary to properly operate the machine. Examples of means for controlling fiber orientation include machine speed, ratio of fiber suspension jet inflow speed to wire speed (J / W).
Ratio), wire shake, placement of homing boards and weir boards, and appropriate placement of dandy rolls. By combining one or more of these, it is possible to make the ratio of the maximum value and the minimum value of the transmitted microwave intensity close to 1, but it is necessary to achieve harmony with the texture of the paper and other paper quality. You should make adjustments while trying. On the other hand, the optimum values of the machine speed, the J / W ratio, and the like differ depending on the type of machine, and it is impossible to numerically quantify them comprehensively.

The pressure-sensitive adhesive sheet thus obtained is used as, for example, a label after finishing into a continuous sheet or a sheet (cut) sheet, and then undergoing die cutting and a printing process. In order to improve running performance and printing workability in a printer, these pressure-sensitive adhesive sheets are provided with fine pores on the entire surface of the base material or a specific portion by corona discharge treatment or the like as described above, and the air permeability of the pressure-sensitive adhesive sheet is increased. By increasing, the method of improving the running property of the pressure-sensitive adhesive sheet inside the printer can be taken, but such a treatment requires an extra step, and in order to treat the printed surface of the surface substrate, As mentioned above, it has many drawbacks.

On the other hand, the feature of the pressure-sensitive adhesive sheet in the present invention is that it is finished as a continuous sheet or a sheet (cut) sheet and undergoes a die-cutting or printing step, but it is the same as the conventional one. For example, as shown in FIG. 3, FIG. 4, and FIG. 5, it has an extremely great feature in that it is finished as an adhesive sheet partially provided with cuts penetrating from the surface base material to the release sheet.

That is, in order to perform the cut processing as in the present invention at the same time in the die cutting step which is one of the processing steps of the pressure-sensitive adhesive sheet, unlike the conventionally proposed corona discharge processing, an extra and complicated work is performed. What you don't need,
Furthermore, since the holes are not open on the printed surface, problems such as lack of toner or scorching due to corona discharge treatment are eliminated, so that the printed surface of the surface base material is kept clean and the running property inside the printer is extremely high. It has the advantage of being excellent.

Here, it is preferable that the size of the cut provided in the die cut portion is 0.01 to 10 mm, and that the air permeability according to JIS P8117 is adjusted to about 10 to 500 seconds.

[0028]

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.
In addition, unless otherwise indicated, the part and% in an example show a "weight part" and "weight%", respectively.

Example 1 "Production of release sheet" A butyl acrylate-acrylonitrile-acrylic acid terpolymer containing 2% of an emulsifier having a molecular weight of 2500 (trade name: Ricabond-ET-L-924-1)
/ Butyl acrylate-acrylonitrile-containing 100 parts and 2% of an emulsifier with a molecular weight of 2500
Methyl methacrylate-acrylic acid quaternary copolymer (trade name: Ricabond-ET-L-924-2 / manufactured by Chuo Rika Kogyo Co., Ltd.) was mixed with 20 parts of an aqueous copolymer, 10 parts of polyvinyl alcohol, 1 part glycerin, 2 colloidal silica
Parts and 0.1 part of an antifoaming agent were added to prepare an aqueous treatment liquid (paint) for an undercoat layer having a concentration of 40%. 49g of this paint
m ^2, and obtained after drying in a rod blade coater on a high-quality paper having a thickness of 65μm coated amount to be coated so as to 4g / m ^2, the release substrate and dried to have a subbing layer.

A silicone release agent (trade name: KS-845 / manufactured by Shin-Etsu Chemical Co., Ltd.) was coated on the undercoat layer of this release substrate with a bar coater so that the dry weight was 1.0 g / m ^2, and dried. To obtain a release sheet.

"Production of Adhesive Sheet" Acrylic emulsion adhesive (trade name: Cybinol X-491-279 E / manufactured by Saiden Chemical Co., Ltd.) on the release agent layer surface of the release sheet obtained above was dried in an amount of 17 g. The adhesive layer was formed by coating with a reverse roll coater so as to be / m ² and drying. Next, on this adhesive layer surface,
A high-quality paper of 64 g / m ² was overlaid, passed through a press roll, and laminated to obtain an adhesive sheet.

This pressure-sensitive adhesive sheet was subjected to die cutting and slitting with a business form printing machine manufactured by Akira Seisakusho to obtain continuous printing paper. The paper thus obtained is used as a high-speed non-impact printer (trade name: FACOM6715D
/ Fujitsu) and printed, the printability was good.

Example 2 A pulp mixture comprising 30 parts of bleached softwood kraft pulp (NBKP) and 70 parts of bleached hardwood kraft pulp (LBKP),
After adding paper sizing agent (1.3%) and filler (5%) to pulp to prepare paper stock, use a Fourdrinier machine
m2 ^high- quality paper was made.

The papermaking conditions at this time are machine speed 600 m
/ Min, pulp slurry outflow rate (jet) and wire speed ratio (J / W ratio) was 1.015. Then, a paper having a machine take-up width of 3200 mm after papermaking was obtained. Next, to measure the transmitted microwave intensity of this paper, measure 381 mm in the width direction.
The paper was cut into 8 sections (from the operating side of the paper machine, N
o.1, No.2, ... No.8 sample No.). The angle dependence of the transmitted microwave intensity was measured with a molecular orientation meter (MOA-2001A) manufactured by Kanzaki Paper Co., Ltd. on the eight types of paper samples cut in this way, and the maximum value of the transmitted microwave intensity was determined from the measurement results. The ratio (R) to the minimum value was obtained and used as an index to see the orientation of the fiber (for reference, R = 1 means that there is no orientation and is random). The results at this time are shown in Table 1. Further, the above-mentioned high-quality paper having a width of 3200 mm was half-cut into a width of 1600 mm to obtain a base paper for a surface base material and a base paper for a release substrate.

This base paper for release substrate was coated with the same undercoat layer coating material as in Example 1 using a rod blade coater to a dry weight of 4 g / m ^2, and dried to obtain a release substrate having an undercoat layer. Obtained. Next, a silicone release agent (trade name: BY24-162: manufactured by Toray Dow Corning Silicone Co., Ltd.) was applied on the undercoat layer of this substrate in a dry weight of 1 g /
A release sheet was obtained by coating with a bar coater and drying so as to obtain m ² .

Example 1 was applied to the release agent coated surface of this release sheet.
18 g / dry weight of the same pressure-sensitive adhesive as above with a lip coater type coating device (lip coater / Hirano Techseed Co., Ltd.)
It was coated and dried so as to be m ² . Next, the surface substrate having a width of 1600 mm was overlaid on the pressure-sensitive adhesive layer and laminated with a press roll to obtain a pressure-sensitive adhesive sheet. This adhesive sheet was die-cut in the same manner as in Example 1 to obtain a continuous print paper. Pass this paper through a high-speed non-impact printer (trade name: MELCOM8270 / manufactured by Mitsubishi Electric Corporation),
When printed, there was no slanting, and both runnability and printability were good.

[0037]

[Table 1]

Example 3 A pressure-sensitive adhesive sheet obtained in the same manner as in Example 1 was used as a product of Ukida Industry Co., Ltd.
A sheet-cut sheet was obtained by performing a slitting process at the same time as the die-cutting process by a Lotus rotary press (BFS-2030 type), and then performing a sheet cutting process. This adhesive sheet is a high-speed non-impact printer (Product name: 9790KPS /
After passing through Fuji Xerox Co., Ltd., and printing,
The runnability and printability were good.

Example 4 In Example 3, as the silicone release agent and the adhesive, the trade name; SD-7239 (manufactured by Toray Dow Corning Silicone Co., Ltd.) and the trade name; X-491-268, respectively.
Example 3 except that E (manufactured by Saiden Chemical Co., Ltd.) was used.
An adhesive sheet was obtained in the same manner as. The adhesive sheet had good running properties and printability in a printer.

Example 5 In Example 3, as the silicone release agent and the pressure-sensitive adhesive, respectively, trade name; KS-857 (Shin-Etsu Chemical Co., Ltd.)
Manufactured) and trade name; Nicazole L-122 (manufactured by Nippon Carbide Industry Co., Ltd.) was used to obtain an adhesive sheet in the same manner as in Example 3. The adhesive sheet had good printability on a printer, but due to some protrusion of the adhesive, there was occasionally a tendency for jamming, but there was no particular problem in practice.

Comparative Example 1 A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 3 except that cutting was not performed. In this case, the pressure-sensitive adhesive sheet had good printability on the printer, but jamming occurred and the runnability deteriorated.

Comparative Example 2 A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 3 except that fine holes were formed by corona discharge treatment. At this time, the running property of the pressure-sensitive adhesive sheet in the printer was good, but the lack of toner was large and the printability was insufficient.

The measurements of Examples 1 to 5 and Comparative Examples 1 and 2 were carried out, and the obtained results are shown in Table 2. Each measuring method at this time is as follows.

[Tensile Strength of Adhesive] According to the tensile strength measuring method defined in JIS K6301, the maximum load until the adhesive piece was cut was measured (Kg / cm ² ).

[Elongation of Adhesive] The elongation measured according to JIS K6301 was measured by the following (%). E = 100 (L ₁ −L ₀ ) ÷ L ₀ Here, E: elongation (%), L ₀ : marked line distance (mm),
L ₁ ; Mark distance at the time of cutting (mm)

[Dynamic Friction Coefficient] According to JIS P8147, the dynamic friction coefficient between the surface of the release agent layer of the release sheet and the chloroprene rubber (Shore A hardness 65 ± 2 °) was measured. Specifically, the following formula is used. μ = Fμ ÷ F where μ: dynamic friction coefficient, Fμ: average dynamic friction coefficient (g), F: vertical load by weight (g)

[Evaluation of Printer Suitability] (Printer Travelability) The paper was passed through various high-speed non-impact printers and the running condition was observed. ◯: Jamming does not occur and running performance is stable. Δ: A tendency of jamming is occasionally recognized, but there is no problem in practical use. X: Jamming occurs and running property is poor.

(Printability) Paper is printed on various high-speed non-impact printers and a dot analyzer (DA-3000) is used.
/ Manufactured by Kanzaki Paper Co., Ltd.) was used to magnify 10 times and the dropout of dots (halftone dots) was visually evaluated. ◯: Good with no missing dots. X: Many dots are missing, which is not practical.

(Cutting suitability) The cutting suitability is determined by cutting an adhesive sheet into a length of 20 cm and a width of 15 cm, stacking 100 sheets and using a guillotine tester (trade name: CM-450 / Rokugo Seisakusho Co., Ltd.) to measure 20 in the width direction. After cutting continuously, the amount of adhesive attached to the guillotine blade was visually evaluated. ⊚: Adhesion of the adhesive to the guillotine blade is not recognized. ◯: Adhesion of the adhesive to the guillotine blade is hardly observed. Δ: Adhesion of the adhesive to the guillotine blade is recognized, but there is no practical problem.

[0050]

[Table 2]

[0051]

As is apparent from Table 2, the pressure-sensitive adhesive sheets obtained in the examples of the present invention are excellent in printability and paper-passing suitability in a high-speed non-impact printer and at the same time excellent in cutting (cutting) suitability. It was a sheet.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a general pressure-sensitive adhesive sheet.

FIG. 2 is a schematic cross-sectional view (A) and a plan view (B) of a pressure-sensitive adhesive sheet having a through hole according to a prior art.

FIG. 3 is a schematic cross-sectional view of a pressure-sensitive adhesive sheet in which a die cut portion of the present invention is provided with a cut.

FIG. 4 is a plan view (in the case of a single sheet) of an adhesive sheet in which a die cut portion of the present invention is provided with a cut.

FIG. 5 is a plan view (in the case of a continuous sheet) of the pressure-sensitive adhesive sheet in which the die-cut portion of the present invention has a cut.

[Explanation of symbols]

 1 ... Surface substrate 2 ... Adhesive 3 ... Release sheet 4 ... Through hole 5 ... Marginal punch 6 ... Perforation 7 ... Cut 8 ... Die cut part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideaki Suzuki 4-3-1, Jokoji Temple, Amagasaki City, Hyogo Prefecture Kanzaki Paper Manufacturing Co., Ltd. Kanzaki Mill

Claims (5)

[Claims] 1. In a pressure-sensitive adhesive sheet having a structure in which a surface base material, an adhesive, and a release sheet are laminated, and a die-cut is applied, a part of the die cut is provided with a cut line that penetrates to the release sheet. Characteristic adhesive sheet. 2. The pressure-sensitive adhesive sheet according to claim 1, wherein the tensile strength and elongation of the pressure-sensitive adhesive according to JIS K6301 are 3 kg / cm ² or more and 1000% or less, respectively. 3. The pressure-sensitive adhesive sheet according to claim 1, wherein the release agent layer surface of the release sheet and the chloroprene rubber having a Shore A hardness of 65 ± 2 ° have a dynamic friction coefficient of 0.2 or more according to JIS P8147. 4. The pressure-sensitive adhesive sheet according to claim 1, wherein the ratio of the maximum value and the minimum value of the transmitted microwave intensity of the release sheet and / or the surface base material measured by the microwave method is 1.0 to 1.3. 5. A lip coater in which a nozzle head having a doctor edge is disposed below a backing roll, and the coating liquid is jetted by pressure from the nozzle head by means of the coating liquid supply means. Then, a die-cut is applied to the pressure-sensitive adhesive sheet obtained by coating a pressure-sensitive adhesive on the surface of the release sheet, and then a surface base material is laminated on the surface of the pressure-sensitive adhesive layer, and a part of the die-cut portion is cut into the release sheet. The method for producing a pressure-sensitive adhesive sheet according to claim 1, further comprising: