JPH0284476A - Pressure sensitive adhesive sheet for cutting machines - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an adhesive sheet used for decoration or display purposes, etc.
In detail, we use a pressure-sensitive adhesive for cutting machines that has excellent workability when cutting the base material layer of an adhesive sheet using a cutting machine to create cutting patterns such as letters and paper cutouts, and when pasting the created patterns. Regarding the seat.

[Problems to be solved by conventional techniques and inventions] Conventionally,
As an adhesive sheet, one in which a base material layer is laminated on a removable support via an adhesive layer is known.The adhesive sheet is made by cutting the base material layer into a predetermined pattern, and then laminating the base material layer in the pattern. It is used for decoration or display by pasting it on the surface of an adherend, for example, a wall surface.

The above-mentioned adhesive sheet has a base material layer made of a colored film such as a vinyl chloride film, an acrylic film, or a fluororesin film, and a releasable support such as release paper attached to the base material layer via an adhesive layer. Those laminated on the body are commonly used.

As mentioned above, when creating cutting patterns such as cut letters and cut pictures, the use of computer-controlled cutting machines has recently become widespread and mainstream.

When creating a cutting pattern using a computer-controlled cutting machine as described above, the cutter moves quickly and the cut base material layer rolls up from the release layer of the release support, which prevents accurate pattern cutting. There are some things that I can't do. Therefore,
It is conceivable that the base layer enhances the adhesive force between the adhesive layer and the release layer to prevent the base layer from curling up as described above.

However, if the adhesive force between the two is increased, the removal of unnecessary parts after canting (so-called scrap removal),
The problem arises that the process (which is usually done manually) becomes difficult and work efficiency decreases.

In addition, only the necessary part after cutting (the base material layer of a predetermined cutting pattern) is transferred and temporarily fixed to another adhesive film (generally called an application tongue sheet (or tape)), and then the above-mentioned release layer is Peel it off,
Next, when adopting a method in which the base material layer with the predetermined pattern is adhered to the surface of the adherend using an adhesive layer, the work efficiency similarly decreases because it is difficult to peel off the base material layer with the predetermined cutting pattern from the release support. The problem arises that the amount of energy decreases.

Therefore, an object of the present invention is to prevent part of the base material layer from curling up even when a cutting machine with a fast cutting operation is used, so that the base material layer can be cut in an accurate pattern, and furthermore, after cutting, the base material layer can be cut in an accurate pattern. An object of the present invention is to provide a pressure-sensitive adhesive sheet for a cutting machine that has excellent workability and allows the base material layer to be easily and accurately peeled off from a releasable support.

[Means to solve the problem]

As a result of various studies, the present inventors have determined that the peel resistance between the pressure-sensitive adhesive layer of the base layer and the release layer of the release support,
It has been found that the above object can be achieved by adjusting the dynamic peel resistance under two specific conditions to a value within a specific range.

The present invention was made based on the above findings, and comprises a base material layer having a pressure-sensitive adhesive layer, which is laminated on the release layer of a peelable support having a release layer via the pressure-sensitive adhesive layer. A pressure-sensitive adhesive sheet for a canting machine, wherein the dynamic peel resistance between the pressure-sensitive adhesive layer of the base layer and the release layer of the release support is 8 at a tensile speed of 0.3 m for 7 minutes. ~40g/
25-100g/inch and tensile speed 9m/min
The present invention provides a pressure-sensitive adhesive sheet for a cutting machine, which is characterized in that it has a diameter of 1 inch.

Hereinafter, the pressure-sensitive adhesive sheet for cutting machines of the present invention will be described in detail.

The pressure-sensitive adhesive sheet for cutting machines of the present invention has a base material layer having a pressure-sensitive adhesive layer laminated on the release layer of a release support having a release layer via the pressure-sensitive adhesive layer. It has a structure.

The above pressure-sensitive adhesive sheet for cutting machines is
The dynamic peel resistance between the pressure-sensitive adhesive layer of the base layer and the peelable H layer of the peelable support is 8 to 8 at a tensile speed of 0°3 m/min.
25-1 at 40 g/inch and tensile speed 9 m/min
00 g/inch.

As a result, the pressure-sensitive adhesive sheet for cutting machines of the present invention is suitable for cutting the base layer into a predetermined pattern using, for example, a computer-controlled cutting machine capable of cutting at high speed. Even when cutting, corners and small parts do not curl up, so even detailed cutting patterns can be cut accurately. Furthermore, since the desired base material layer portion after cutting can be easily and accurately peeled off from the releasable support, scrap removal work to remove unnecessary parts of the base material layer and scraping work can be performed after removing unnecessary parts. This makes it possible to efficiently transfer the necessary parts to the application sheet.

In addition, in the measurement of the dynamic peel resistance described above, specifically, the pressure-sensitive adhesive sheet for cutting machine was
A test piece was prepared by cutting it into a size of 0 m, and the releasable support of the test piece was fixed on a smooth panel using double-sided tape, and the end base material layer and accompanying material were peeled off from the release layer. The pressure sensitive adhesive layer was moved and peeled off from the peelable support in a direction of 180° at the predetermined speed, and the tensile force at that time was measured.

Next, the pressure-sensitive adhesive sheet for cutting machines of the present invention will be described in more detail.

The base material layer in the present invention is preferably a resin film, paper such as Japanese paper, Western paper, natural paper, or synthetic paper, cloth such as synthetic cloth or natural cloth such as linen or silk, aluminum sheet, copper sheet,
Examples include metal sheets such as synthetic metal sheets, and particularly preferred are resin films.

Preferred embodiments of the synthetic resin forming the resin film include polyvinyl chloride, polystyrene, low-density polyethylene, polypropylene, methyl (meth)acrylic resin, polycarbonate, and cotton-like polyester, which have good transparency. A synthetic resin is suitable. Among these, vinyl chloride resins and methyl (meth)acrylic resins are preferred, and among these, polyvinyl chloride resins are most preferred.

In addition to vinyl chloride homopolymers, the vinyl chloride resins include vinyl chloride copolymers containing about 30% by weight or less of a copolymer component, and blends of vinyl chloride homopolymers and vinyl chloride copolymers. Available. Examples of such copolymer components include monomers such as ethylene, propylene, butene, acrylic ester, vinylidene chloride, vinyl ester, vinyl ether, and vinyl acetate.

Furthermore, vinyl chloride resin blends in which these vinyl chloride resins are blended with polymers other than vinyl chloride resins at a ratio of about 30% by weight or less can also be used.

Furthermore, a semi-rigid vinyl chloride resin molding composition disclosed in JP-A No. 60-4543 can also be used. That is,
The vinyl chloride resin paste composition is a vinyl chloride paste resin composition consisting of the following (A) and/or (B) and/or (C).

(A) 0 to about 20% by weight, preferably 0 to about 10% by weight
(B) has a number average molecular weight (Mn) of about 1,500 or more, preferably about 1,500 to 6,000. More preferably about 1500
-4000, more preferably about 2000-4000, about 10 to about 80 parts by weight, preferably about 20 to 60 parts by weight, more preferably about 25 to 5 parts by weight of a liquid polyester plasticizer.
0 parts by weight and other plasticizers for vinyl chloride resins from O to about 10 parts by weight.
parts by weight, preferably 0 to about 5 parts by weight, and (C) a number average molecular weight (Mn) of about 1500 to about 5000.
The above (B
) from about 0.2 to about 200% by weight based on the total amount of plasticizer;
Compositions comprising preferably from about 10 to about 150% by weight, more preferably from about 20 to about 100% by weight are also preferred.

When the base layer is made of resin, the base layer may contain additives such as stabilizers, antioxidants, lubricants, plasticizers, and ultraviolet absorbers. The amount of these additives to be used can be selected as appropriate, but based on 100 parts by weight of the resin component, approximately 0.
．． 5 to about 10 parts by weight stabilizer, about 0.01 to about 2 parts by weight antioxidant, about 0.2 to about 10 parts by weight lubricant, about 1 to about 60 parts by weight plasticizer, about 0. An example of the amount used is .05 to 5 parts by weight of the ultraviolet absorber.

Specific examples of these additives include, for example, calcium-zinc stabilizer (manufactured by Katsuta Kako Co., Ltd., CZ-19J), tin-based stabilizer (manufactured by Katsuta Kako Co., Ltd., 7M181FSJ), barium zinc-based stabilizer (manufactured by Katsuta Kako Co., Ltd., 7M181FSJ), , BZlooJ), lead stearate stabilizer (manufactured by Kosei ■, pb-st):
For example, monophenolic antioxidants (manufactured by Yoshitomi Pharmaceutical ■,
Antioxidants such as Yoshinox BHT), amine antioxidants (Yoshitomi Pharmaceutical ■, Yoshinox EQ), and polyphenol antioxidants (Ciba-Geigi, Irganox 1010); for example, hydrocarbon lubricants (Allied Chemical, Yoshinox EQ);
Ac-6A), fatty acid-based lubricant (F-3, manufactured by Shuuki Fine Chemical Co., Ltd.), fatty acid ester-based lubricant (manufactured by Hoechst Javan, Hoechst Waxop), fatty alcohol-based lubricant (
Lubricants such as alcohol 86 (manufactured by Kao Soap); e.g. phthalic acid plasticizer (manufactured by Sanken Kako ■, DOP), epoxy plasticizer (manufactured by Adeka Argus ■, Adeka Cider 0130p)
), adipate ester plasticizer (manufactured by Tanemizu Chemical Industry ■,
DOA), polyester plasticizers (Rohm & Haas, Baraflex G25); for example, benzotriazole ultraviolet absorbers (Ciba-Geigi, Co., Ltd.);
Examples include ultraviolet absorbers such as Tinuvin P, Tinuvin 326, 327), and hydroxybenzophenone ultraviolet absorbers (Ciasorb UV-9, manufactured by American Cyanamid).

As the base material layer made of the synthetic resin, preferably a cast film is used, and a solution containing the resin component is
It can be formed by a method known per se, for example, a casting method, a film forming method such as a coater method,
Preferably, it is utilized in the form of an unstretched film. Examples of solvents used in this case include tetrahydrofuran, methyl ethyl ketone, methylene chloride, dimethylformamide, alcohol, and the like.

The yield stress of the base material layer thus obtained is preferably 1 to 5.
kg/m”, particularly preferably 1.2 to 4.5 kg/■
2, more preferably 1.5 to 4 kg/IIIlz theal.

The pressure-sensitive adhesive layer in the present invention can be formed of a type of pressure-sensitive adhesive generally referred to as a pressure-sensitive adhesive that exhibits tackiness at room temperature. Examples of such pressure sensitive adhesives include rubber adhesives, acrylic adhesives, vinyl acetate adhesives, urethane adhesives, silicone adhesives, other adhesives, and appropriate mixtures thereof. Examples include adhesives.

Examples of the rubber adhesive include natural rubber, isobutylene rubber, styrene-butadiene rubber, styrene-butane diene block copolymer, styrene-isoprene block copolymer, butyl rubber, polyisobutylene, silicone rubber, polyvinyl isobutyl ether, and chlorobrene. Examples include those made of rubber, nitrile rubber, etc., and mixtures thereof, or those made of at least one of them as a main component. Moreover, those having a slight crosslinked structure between molecules can also be preferably used.

Acrylic adhesives and vinyl acetate adhesives are, for example, adhesive layers formed with solvent-type adhesives containing unsaturated carboxylic acid ester copolymers as a main component, and in particular unsaturated carboxylic acid ester copolymers. The glass transition temperature (Tg) derived from 99.9 to 85 parts by weight and 0.1 to 15 parts by weight of a vinyl monomer having a crosslinkable functional group is -20
100 parts by weight of copolymer, 70 to 400 parts by weight of solvent, and 0.01 part of a crosslinking agent capable of crosslinking with the above crosslinkable functional group.
Adhesive layers formed from solvent-type adhesives comprising ~20 parts by weight are preferred.

Examples of unsaturated carboxylic acid ester monomers for obtaining the copolymer constituting the adhesive include methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, and pentyl (meth)acrylate. , hexyl (meth)acrylate, hebutyl (meth)acrylate and (
Examples include (meth)acrylic acid ester monomers such as meth)acrylic acid octicle, vinyl ester monomers such as vinyl acetate and vinyl propionate, and the like.

In addition, vinyl monomers having a crosslinkable functional group for obtaining the above copolymer include vinyl monomers having a carboxyl group such as acrylic acid, methacrylic acid, and itaconic acid, hydroxymethyl ester of (meth)acrylic acid, and hydroxymethyl ester of (meth)acrylic acid. Examples include vinyl monomers having a hydroxyl group such as ethyl ester, hydroxypropyl ester, hydroxybutyl ester, hydroxypentyl ester, and hydroxyhexyl ester, and further examples include vinyl monomers having an epoxy group and an amino group.

Moreover, as a solvent, ethyl acetate, toluene, acetone, isopropyl alcohol, etc. are preferable.

Further, examples of the crosslinking agent include organic polyvalent isocyanate compounds, and specific examples thereof include P-phenyl diisocyanate, 4°4-diphenylmethane diisocyanate, 24-tolylene diisocyanate,
2.6-Toluylene diisocyanate, xylylene diisocyanate, triisocyanate, so-called aromatic polyisocyanates such as naphthalene 15 diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, heptamethylene diisocyanate, 4.4
-Dicyclohexylmethane diisocyanate, etc.

Incidentally, the glass transition temperature Tg of the copolymer is a value determined by the following measuring method.

Weigh out 10+ mg of resin solution sample into a cell and heat at 100°C.
The sample that has been dried for 2 hours is used as the measurement sample. Shimadzu DT-30 differential scanning calorimeter
al Scanning Calorimeter)
The temperature is increased from -80"C to 20° (:/win). Nitrogen gas is used as the carrier gas.
Measurement is performed using a flow rate of 0 cc/sin.

Examples of the urethane adhesives include triphenylmethane=p,p,p'''-triisocyanate, hexamethylene diisocyanate, diphenylmethane-4,
A polymer compound produced by the reaction of an isocyanate such as 4-diisocyanate or toluene diisocyanate with a compound having an active hydrogen atom, such as polyester, polyether glycol, polyacrylate, polyamide, etc. having an active hydrogen atom; Examples include mixtures thereof, or those containing at least one of them as a main component.

Furthermore, examples of silicone adhesives include linear or kraft compounds containing dimethylpolysiloxane, diphenylpolysiloxane, and organopolysiloxane as main components.

The releasable support in the present invention is particularly limited as long as it has a releasable support and has a releasable layer on the surface that can peel off the pressure-sensitive adhesive layer of the base layer. For example, various sheet materials such as nonwoven fabrics, synthetic fibers, nets, paper, plastic films, or laminates of paper and polyolefin films such as polyethylene films are coated with a material to form a release layer. I can list some things as preferred. Examples of the material forming the release layer include silicone resin, polyethylene, polypropylene, polyester, vinyl chloride,
Vinylidene chloride, tetrafluoroethylene polymer, vinyl fluoride, vinylidene fluoride, aminoaldehyde, seracta, wax paraffins, chromium chloride stearate,
Alkyl acid phosphates, titanium dioxide and nitrocellulose, fluorocarbons, perfluorocarbon oxylic acids, polybutadiene and acrylonitrile copolymers, sodium alginate and hydrated sodium silicate and clay blends, polyvinyl butyral and hydrogenated castor oil and stearic acid blends, vinyl Pyrrolidone and vinyl stearate copolymer, polyvinyl alcohol and vinyl stearate copolymer, vinyl stearate, maleic anhydride and vinyl acetate copolymer, higher alkylamines, polyvinyl octadecyl urethane, acrylic acid and acrylic acid Examples include octadecyl copolymer, polyvinyl alcohol and N octadecyl carbamate copolymer, polyvinyl alcohol and N dihydroperfluoroalkyl isocyanate copolymer, and carbamic acid and polyvinyl alcohol. Particularly preferable examples of the releasable support having a release layer include silicone resin-coated release paper, polyester film, and polypropylene terpolymer-coated paper.

Note that the present pressure-sensitive adhesive sheet for cutting machines can be manufactured, for example, as follows, although it is not limited thereto.

First, a pressure-sensitive adhesive layer on a release layer on a release support having a release layer is dried to have a thickness of about 35 μm. Thereafter, a pressure sensitive adhesive sheet is manufactured by pressure laminating the base material onto the pressure sensitive adhesive layer.

(Example) Next, examples conducted to clarify the effects of the present invention will be described together with comparative examples.

First, various evaluation tests, evaluation methods, etc. conducted in Examples etc. will be explained.

(1) Cut the dynamic peel resistance adhesive sheet to a size of 25.4+o Place the peeled end base material layer and adhesive layer on the above releasable support.
It was moved and peeled off in the direction of 80' at two speeds: 00.3 m/min and 9 m/min, and the tensile force at that time was measured.

The following device was used for the measurement.

(2) Cutting properties Using a cutting machine D-860 series (manufactured by Signum), a 15aa square Gothic letter rABCDEF was cut.
The letter J was cut and the appearance after cutting was observed. Evaluation was made based on lifting of the film (base material layer), turning up, and degree of positional deviation between the starting and ending points of cutting for each character. Evaluation was performed on the following five levels.

5: There is no lifting or sagging of the film, and the starting point and ending point of cutting coincide.

4: There is some lifting or peeling of the film at acute angle cuts, circles with small radii, etc., but the starting and ending points of the cutting match.

3: There is some lifting and curling throughout, but the starting and ending points of cutting are aligned.

2: There is some lifting and waviness throughout, and the starting and ending points of cutting are slightly shifted.

1; Severe lifting and curling, and the starting and ending points of cutting are clearly misaligned.

(3) Scrap Removal Using a cutting machine D-860 series (manufactured by Signum), the square Gothic letters "Nippon Carbide Industries" were cut, and then scraps were removed (unnecessary part removal work). One end of the unnecessary part was pulled at a speed of approximately 5 m/min so as not to be torn off all at once, and the following 5-level evaluation was performed based on the degree of remaining character pattern.

5; - All character patterns remain even if the character size is 151111 squares.

4;-If the character size is 30 squares, all character patterns remain.

3;- If the character size is 30 squares, the dakuten pattern will not remain, but other character patterns will remain.

2;- If the character size is 30m square, about 50% of the character pattern remains.

1; - Even if the character size is 30m square, almost no character pattern remains.

(4) Using a transferable cutting machine D-860 series (manufactured by Signum), cut the 15w square Gothic letters "ABCDEFJ", remove the scraps, and create an application tape (sheet) of the remaining character pattern. The application tape was Y-37PH (trade name) manufactured by Sunny Kagaku ■, and the application tape was pasted onto the cut character pattern and thoroughly crimped with a squeegee. After 10 minutes, the application tape was peeled off from the releasable support and evaluated on the following five scales.

5; When the application tape is peeled off with the removable support fixed, all six characters are transferred to the application tape even when the application tape is pulled in a 180° direction with respect to the support.

4; When peeling off the application tape with the removable support fixed, if the application tape is pulled in a 90° direction with respect to the support, all six characters are transferred to the application tape.

3; When fixing the application silane tape and peeling off the releasable support by pulling it in a 180° direction with respect to the tape,
Transfer all six characters to the application tape.

2; When fixing the application tape and peeling off the releasable support by pulling it in a 180° direction with respect to the tape,
Transfer 1 to 5 characters out of 6 characters.

l; When the application tape is fixed and the releasable support is pulled in a 180° direction with respect to the tape and peeled off,
Does not transfer at all.

The above evaluation was repeated several times, and if the same evaluation was obtained three times in a row, that situation was considered as the actual evaluation.

(5) Comprehensive cutting suitability evaluation Based on the evaluation of cutting performance, waste removal performance, and adhesion performance as explained in (2) to (4) above, suitability for computer-controlled cutting machines was comprehensively evaluated, and the following content was determined. A comprehensive evaluation was conducted on a three-level scale.

O: All evaluations (cutting, scrap removal properties, transfer properties) are 4 or more. Suitable for cutting machines.

Δ: 3 or more in all evaluations. Although it can be used for cutting machines, its suitability is not sufficient.

×: There is an evaluation of 2 or less in cutting property, scrap removal property, and transfer property. It is not suitable for cutting machines and is sometimes difficult to use.

(6) Adhesive Strength After cutting the adhesive sheet into 25.4 x 150 cm and peeling off the base layer from the releasable support, the base layer was coated on an alkyd melamine coated board (Japan Test Panel Industry) using a squeegee. (manufactured by). After leaving this at room temperature for 72 hours, Strograph M-50 (■ Toyo Seiki manufactured rupture)
The adhesive strength was measured by peeling off the base layer from the coated board in a 180° direction using a . However, the tensile speed is 0.
The speed was 3 m/min.

(7) Adhesive strength after immersion in warm water Cut the adhesive sheet into 25.4 x 150 m pieces, peel off the base layer from the releasable support, and press the base layer onto a 3-inch-thick lined glass using a squeegee. did. After leaving this at room temperature for 72 hours, it was immersed in water at 40°C for 162 hours, taken out, air-dried at 23°C, and after 1 minute diameter was applied to the above-mentioned painted board using Strograph M-50. 180°
The adhesive strength was measured by peeling off the base layer in the direction shown in FIG. However, the tensile speed was 0.3 m/min.

(8) The gasoline-resistant adhesive sheet was cut into a size of 60 x 60 m, and after peeling off the base layer from the release support, it was pressed onto an alkyd melamine coated plate (manufactured by Nippon Test Panel Industry ■) using a squeegee. After this was left at room temperature for 72 hours, it was immersed in unleaded gasoline for 30 minutes, taken out and dried, and the surface condition of the base material layer was evaluated.

Evaluation was performed using the following three-level evaluation of O1Δ and ×.

O: Almost no change in surface condition.

8; Approximately 30 blisters with a diameter of 0.5 tm or less are observed, or the edge of the test piece is curled up by 1 to 2 m.

×: Is the blister larger or more than in the case of Δ above?
Or the edge of the test piece curls up significantly.

(9) The weather-resistant adhesive sheet was cut into 35x60 pieces, and the base layer was crimped onto an alkyd melamine coated board (manufactured by Nippon Carbide Industries Ltd.) using a squeegee. It was exposed outdoors for 2 years on a 45° slope facing south in a factory (location: Oshima, Nameyo City, Toyama Prefecture), and its appearance was evaluated. Evaluation was performed using the following three-level evaluation of O1Δ and ×.

O: No significant discoloration or fading, and no peeling of the sheet was observed.

Δ: Slight discoloration is observed, but no peeling of the sheet is observed.

×: Significant discoloration or fading or peeling of the sheet is observed.

(Example 1) Using silicone release paper A as a releasable support, 100 parts by weight of an acrylic adhesive (trade name: PE121, manufactured by Nippon Carbide Industries ■) and a crosslinking agent (trade name:
Apply 1 part by weight of Coronate L (manufactured by Nippon Polyurethane Industries) and dry it to form a pressure-sensitive adhesive layer with a thickness of approximately 35 μm.Next, on top of this heat-sensitive adhesive layer, a base material layer ( (Product name: Hynis Paint 5010M (manufactured by Nippon Carbide Industries, Ltd.)) was bonded together to create an adhesive sheet, which was then stored at room temperature for one month.

Thereafter, the above adhesive sheet was cut into 25.4 x 150 cm, and the dynamic peel resistance of the test piece was measured according to the method explained in (1) above, and the various evaluations described above were performed. The results are shown in Table 1 below. The results of Example 2 to Comparative Example 5 are also shown in Table 1 below.

(Example 2) Using silicone release paper B as a releasable support, an acrylic adhesive (trade name:
This is the same as the case of Example 1 except that an acrylic adhesive (trade name: KP-982, manufactured by Nippon Carbide Industries ■) was used instead of PE-121, manufactured by Nippon Carbide Industries ■.

(Example 3) In order to form a pressure-sensitive adhesive layer, 100 parts by weight of the aforementioned acrylic adhesive (product name: PE-121, manufactured by Nippon Carbide Industries ■) and a silicone adhesive (product name: PSA-
The same procedure as in Example 2 was used, except that a mixture of 2 parts by weight of 6540 (manufactured by Toshiba Silicone ■) was used.

(Example 4) The same procedure as in Example 1 except that silicone release paper C was used as the releasable support and an acrylic resin film (trade name: HiS Paint A Film, manufactured by Nippon Carbide Kogyo ■) was used as the base layer. Case and consultation.

(Comparative Example 1) This was the same as in Example 1 except that silicone release paper E was used as the releasable support.

(Comparative Example 2) Acrylic adhesive: PE to form a pressure sensitive adhesive layer
The procedure was the same as in Example 3, except that 4 parts by weight of the silicone adhesive (trade name: PSA-6540, manufactured by Toshiba Silicone ■) mixed with 121 (Nippon Carbide Industries ■) was used.

(Comparative Example 3) This was the same as Example 1 except that a silicone-based release paper was used as the release support.

(Comparative Example 4) This is the same as Example 1 except that silicone-based peeled #PET-F (indicated as PF in Table 1) was used as the peelable support.

(Comparative Example 5) Silicone release paper B was used as the release support, and vinyl chloride resin film (product name: FC-11) was used as the base layer.
64, manufactured by Riken Vinyl ■) was used, but the same as in Example 1 above.

The characteristics of the peelable support used in the Examples and Comparative Examples described above are as follows.

Silicone-based release papers A to D are all made by laminating a polyethylene layer on high-quality paper and further coating a silicone resin thereon as a release layer, and the differences between them are as follows.

An acrylic adhesive (product name: PE-121) is placed on the support.
・A mixed solution of 100 parts by weight of Nippon Carbide Kogyo Co., Ltd. and 1 part by weight of a crosslinking agent (product name: Coronate L, made by Nippon Polyurethane Kogyo Co., Ltd.) was applied and dried to form a pressure-sensitive adhesive layer with a thickness of about 35 μm. Next, a base material layer (trade name: Hynis Paint 5010M, manufactured by Nippon Carbide Industries ■) was pasted on top of this heat-sensitive adhesive layer to create an adhesive sheet, and then stored at room temperature for one month. Thereafter, the adhesive sheet was cut into a size of 25.4 x 150 m+, and the dynamic peel resistance of the test piece was measured according to the method described in (1) above. It is characterized by its dynamic peel resistance as follows.

A: Dynamic peel resistance is 18 g/inch at 0.13 m/min and 50 g/inch at 9 m/min.

B: Dynamic peel resistance is 7 g/inch at 0.3 m/min,
17 g/inch at 9 m/min.

C: Dynamic peel resistance is 22 g/inch at 0.3 m/min and 28 g/inch at 9 m/min.

D: Dynamic peel resistance is 20 g/inch at 0.3 m/min and 20 g/inch at 9 m/min.

Silicone release paper E is made by clay coating the surface of super calendar paper and then coating silicone resin as a release layer on top of the clay coating.
TF is a PET film coated with silicone resin as a release layer.

Similar to A-D, ESF is also characterized as follows.

E; 18 g/inch when dynamic peel resistance is 0.3 m/min;
110 g/inch at 9 m/min.

F: 7 g/inch when dynamic peel resistance is 0.3 m/min, 9
15 g/inch at m/min.

As is clear from the description in Table 1 above, the pressure-sensitive adhesive sheet for cutting machines of the present invention has excellent cutting properties,
Has scrap removal and transfer properties.

This makes it possible to efficiently remove scraps and transfer to the abrasion sheet.

Although the present invention has been specifically explained above, the pressure-sensitive adhesive sheet for cutting machines of the present invention is not limited to those shown in the above embodiments, and various changes can be made without departing from the gist of the present invention. Needless to say.

Furthermore, the pressure-sensitive adhesive sheet for cutting machines of the present invention can be applied to devices other than computer-controlled cutting machines.

(Effect of the invention〕

Claims (1)

[Claims] A pressure-sensitive adhesive sheet for a cutting machine, in which a base layer having a pressure-sensitive adhesive layer is laminated on the release layer of a release support having a release layer via the pressure-sensitive adhesive layer,
The dynamic peel resistance between the pressure-sensitive adhesive layer of the base layer and the release layer of the release support is 8 to 8 at a tensile speed of 0.3 m/min.
25-1 at 40 g/inch and tensile speed 9 m/min
1. A pressure-sensitive adhesive sheet for cutting machines, characterized in that the adhesive strength is 00 g/inch.