KR20070016982A - Release-Treated Substrate and Preparation Method thereof - Google Patents

Abstract

This invention provides the peeling process base material excellent in the adhesiveness of the peeling agent layer and base material by a cationically polymerizable ultraviolet curing silicone type peeling agent.

A peeling process base material is a peeling process base material which has a peeling agent layer by a cationically polymerizable ultraviolet curable silicone type peeling agent at least partially on one or more surfaces of a base material, and a cationically polymerizable ultraviolet curable silicone type peeling agent is at least 1 side or more of a base material. The heat treatment is performed after the partial coating or before the ultraviolet irradiation treatment. As a cationically polymerizable ultraviolet curable silicone type peeling agent, the cationically polymerizable ultraviolet curable silicone type peeling agent which has a modified silicone type polymer component which has two or more epoxy groups in a molecule as an active component is preferable. As temperature at the time of heat processing, it is preferable that it is 35-120 degreeC.

Cationically polymerizable ultraviolet curing silicone peeling treatment agent, modified silicone polymer component, peeling treatment base material,

Description

Release Treatment Substrate and Method for Manufacturing the Same {Release-Treated Substrate and Preparation Method Young}

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing which shows the example of the peeling process base material of this invention.

<Brief description of symbols for the main parts of the drawings>

11 to 13: peeling treatment substrate, respectively

2: description

3: Heat Treatment UV Cationic Silicone Peeling Agent Layer

4: adhesive layer

5: adhesive tape or sheet

[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-226592

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a peeling treatment base material such as a peeling liner used for an adhesive tape or a sheet or a backing substrate having a peeling treatment, and a manufacturing method thereof, and more particularly to a cationic polymerizable ultraviolet curable silicone-based peeling. Excellent adhesion between the release treatment agent layer and the substrate by the treatment agent, and even when exposed to excessive heating or humidification conditions or stored for a long time, the dropping of the silicone component in the release treatment agent layer from the substrate can be suppressed or prevented. A peeling treatment base material and its manufacturing method are related.

Examples of the ultraviolet curing silicone peeling treatment agent include a cationic polymerizable ultraviolet curing silicone peeling agent (cationic polymerization type ultraviolet curing silicone peeling agent) that is cured by cationic polymerization, a radically polymerizable ultraviolet curing silicone peeling agent that is cured by radical polymerization, and radical addition. The radical addition polymerizable ultraviolet curing silicone type peeling agent hardened | cured by superposition | polymerization, the hydrosilylation-reactive ultraviolet curable silicone type peeling agent hardened | cured by hydrosilylation reaction, etc. are used. In such an ultraviolet curable silicone peeling treatment agent, the cationic polymerizable ultraviolet curable silicone peeling treatment agent has a volume shrinkage after curing than a radically polymerizable ultraviolet curable silicone peeling treatment agent, a radical addition polymerizable ultraviolet curable silicone peeling treatment agent or a hydrosilylation reactive ultraviolet curable silicone peeling treatment agent. Since there is little, the peeling agent layer by a cationically polymerizable ultraviolet curing silicone type peeling agent is said to be favorable adhesiveness to a base material (refer Unexamined-Japanese-Patent No. 2001-226592). However, depending on the material or structure of the substrate in the peeling substrate, the coating thickness of the cationic polymerizable ultraviolet curable silicone-based peeling agent, and the like, the peeling agent layer by the cationic polymerizable ultraviolet curable silicone-based peeling agent may not have sufficient adhesiveness to the substrate. there was.

In addition, even when there is no problem in use under a normal mild environment, when the peeling treatment substrate is exposed alone or under conditions of excessive heating or humidification in a state of being bonded to the pressure sensitive adhesive layer, or when stored for a long time, the peeling treatment agent layer In the case where the silicone component in the substrate is removed from the substrate, and the peeling substrate is bonded to the pressure-sensitive adhesive layer, for example, the silicone component may remain on the surface of the pressure-sensitive adhesive layer and significantly hinder the adhesion characteristics. Therefore, in order to maintain the peeling characteristic of a peeling process base material, and the adhesive characteristic of an adhesive tape or a sheet in a stable state, the peeling agent layer by a cationically polymerizable ultraviolet curable silicone type peeling agent is fully stuck with the base material in a peeling process base material, It is desired to be.

Therefore, the objective of this invention is providing the peeling process base material excellent in the adhesiveness of the peeling agent layer and base material by a cationically polymerizable ultraviolet curing silicone type peeling agent, and its manufacturing method.

Another object of the present invention is to provide a peeling treatment substrate and a method for producing the peeling treatment substrate which can suppress or prevent the dropping of the silicone component in the peeling treatment agent layer from the substrate even when exposed to excessive heating or humidification conditions or stored for a long time. It is to offer.

MEANS TO SOLVE THE PROBLEM As a result of earnestly examining in order to achieve the said objective, when a cationically polymerizable ultraviolet curable silicone type | system | group peeling agent is used as a peeling processing agent, when the peeling agent layer formed by a cationically polymerizable ultraviolet curable silicone type | system | group peeling agent is formed through heat processing, It has been found that the adhesion to the base material of the peeling treatment agent layer by the cationic polymerizable ultraviolet curing silicone type peeling treatment agent can be remarkably improved. This invention is completed based on these knowledge.

That is, this invention is a peeling process base material which has a peeling agent layer by a cationically polymerizable ultraviolet curable silicone type | system | group peeling agent at least partially on one side or more of a base material, and has a cationically polymerizable ultraviolet curable silicone type | system | group peeling agent on one or more surface of a base material. It is the peeling process base material characterized by heat-processing after apply | coating at least partially or before performing an ultraviolet irradiation process.

As said cationically polymerizable ultraviolet curable silicone type peeling treatment agent, the cationically polymerizable ultraviolet curable silicone type peeling agent which uses the modified silicone type polymer component which has two or more epoxy groups in an molecule | numerator as an active component can be used preferably.

As temperature at the time of performing heat processing in this invention, it is preferable that it is 35-120 degreeC.

Moreover, as said peeling process base material, the surface of the side in which the film | membrane by the cationically polymerizable ultraviolet curable silicone type peeling agent layer is formed is put on a glass plate, and the Shore A hardness of the contact area of 10 mm x 10 mm size (JISK6301 spring type A). When the silicone rubber having a mold) of 70 is placed on the coating and subjected to the operation of amplifying 10 cm at a speed of 1 m / min with a pressure friction of 0.5 MPa five times, it is preferable that the coating does not fall off from the substrate.

As a peeling process base material of this invention, the peeling liner which has a peeling liner which has a peeling agent layer by a cationically polymerizable ultraviolet curable silicone type | system | group peeling agent on one side or both surfaces of a base material, or a peeling agent by a cationically polymerizable ultraviolet curable silicone type peeling agent on one side of a base material It is preferable that it is a base material for adhesive tapes or sheets which have a layer, and the other surface was the back surface process which is the surface for forming an adhesive layer.

The present invention is also a method of manufacturing the above peeling substrate, wherein the cationic polymerizable ultraviolet curable silicone-based peeling agent is at least partially applied to at least one side of the substrate and formed, and the cationic polymerizable without ultraviolet irradiation treatment. The manufacturing method of the peeling process base material is provided with the process of heat-processing about the application layer of an ultraviolet curable silicone type peeling agent.

Best Mode for Carrying Out the Invention

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described in detail, referring drawings as needed. In addition, the same code | symbol may be attached | subjected to the same member or part.

[Peeling treatment base material]

As shown in FIG. 1, the peeling treatment substrate of the present invention is at least partially formed on at least one surface of the substrate by a cationic polymerizable ultraviolet curing silicone peeling treatment agent (sometimes referred to as an "UV cationic silicone peeling treatment agent"). Having a release agent layer (sometimes referred to as "UV cationic silicon release agent layer"), wherein the UV cationic silicon release agent layer is at least partially coated with a UV cationic silicon release agent on at least one side of the substrate It is formed by performing a heat treatment after that or before performing an ultraviolet irradiation treatment. Therefore, the UV cationic silicone peeling treatment agent layer ("heating treatment UV cationic silicone peeling treatment agent layer") formed by applying heat treatment after applying the UV cationic silicone peeling treatment agent or before performing the ultraviolet irradiation treatment may be referred to. ()) Is formed on the substrate with excellent adhesion, depending on the material or structure of the substrate, the type of the UV cationic silicone peeling treatment agent and the thickness of the heat treatment UV cationic silicone peeling treatment agent layer, and exposed under conditions of excessive heating or humidification Even if it is stored or stored for a long time, it is suppressed or prevented that the silicone component in the heat treatment UV cationic silicone release treatment agent layer is removed from the substrate. Therefore, when using the peeling process base material of this invention, the peeling characteristic as a peeling liner, and the adhesiveness characteristic of an adhesive tape or a sheet can be kept in a stable state.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing which shows the example of the peeling process base material of this invention. In Fig. 1, (11) to (13) are peeled substrates, (2) are substrates, (3) are heat treated UV cationic silicone peeling agent layers, (4) are pressure sensitive adhesive layers, and (5) are adhesive tapes or Sheet. The peeling treatment base material 11 shown by FIG. 1 (a) is a peeling liner which has a structure in which the heat-processing UV cationic silicone peeling agent layer 3 was formed in both surfaces of the base material 2. As shown in FIG. In addition, the peeling process base material 12 shown in FIG.1 (b) is a peeling liner which has the structure in which the heat processing UV cationic silicone peeling agent layer 3 was formed in one surface of the base material 2. As shown in FIG. 1 (c), the heat treatment UV cationic silicon release treatment agent layer 3 is formed on one side of the base material 2, and the other side has a pressure-sensitive adhesive layer. It is a base material for adhesive tapes or sheets which were the back surface process which is a surface for forming, and the surface (namely, heat-processing UV cationic silicone peeling agent layer 3) for forming the adhesive layer in the said peeling process base material 13 is formed. The adhesive layer 4 is formed in the surface which is not provided, and the whole of the peeling process base material 13 and the adhesive layer 4 becomes the adhesive tape or the sheet | seat 5.

However, the heat treatment UV cationic silicone peeling treatment agent layer (3) is at least partially coated with a UV cationic silicone peeling treatment agent on at least one side of the substrate, and then subjected to heat treatment, and then subjected to ultraviolet irradiation treatment. Formed. That is, after apply | coating a UV cationic silicone peeling processing agent, heat processing is performed before performing an ultraviolet irradiation process. Since this heat treatment is performed before curing by the ultraviolet irradiation treatment, when the heat treatment is performed, the UV cationic silicone peeling treatment agent in an uncured state may have a detail on the surface of the substrate, thereby exhibiting an interfacial compatibility effect. Therefore, when the ultraviolet irradiation treatment is performed and cured after the heat treatment, the heat treatment UV cationic silicone release treatment agent layer can be formed on the substrate with excellent adhesion.

(Heat Treatment UV Cationic Silicone Peeling Agent Layer)

Heat Treatment The UV cationic silicone peeling treatment agent layer is formed at least partially on one or both surfaces of the substrate by applying a heat treatment after applying the UV cationic silicone peeling treatment agent or before performing the ultraviolet irradiation treatment. In addition, the UV cationic silicone peeling treatment agent can be cured (crosslinked) by ultraviolet irradiation to form a peelable film to form a UV cationic silicone peeling treatment agent layer that exhibits peeling properties excellent in thermal stability. The UV cationic silicone peeling treatment agent is not particularly limited as long as it is a cationic polymerization type silicone peeling treatment agent that can be cured (crosslinked) by ultraviolet irradiation. UV cationic silicone peeling treatment agents can be used alone or in combination of two or more thereof.

In the UV cationic silicone peeling treatment agent, a modified silicone polymer component (modified polysiloxane component) in which one or two or more kinds of cationic polymerization reactive functional groups (or cation polymerization reaction sites) are introduced into the polysiloxane component of the main chain is one or two or more. It is used in combination. In such a modified silicone-based polymer component, for example, an epoxy group (especially an alicyclic epoxy group) can be preferably used as the cationic polymerization reactive functional group. Moreover, it is preferable that 2 or more of the said cationic polymerization reactive functional groups are introduce | transduced in 1 molecule of modified silicone type polymer components. In addition, the cationic polymerization reactive functional group may be directly bonded to the main chain or side chain silicon atoms in the modified silicone polymer component, and is bonded via a divalent group (for example, a divalent organic group such as an alkylene group and an alkyleneoxy group). You may.

Therefore, as a modified silicone polymer component into which a cationic polymerization reactive functional group is introduced, a modified silicone polymer component having two or more epoxy groups in a molecule can be preferably used. Although it does not restrict | limit especially as a modified silicone type polymer component which has two or more epoxy groups in a molecule | numerator, For example, (gamma)-glycidyloxypropyl group, (beta) (3, 4- epoxycyclohexyl) ethyl group, and ( The modified silicone polymer component etc. which introduce | transduced two or more epoxy group containing groups (especially group containing an alicyclic epoxy group), such as 4-methyl-3, 4- epoxycyclohexyl) propyl group, in 1 molecule are mentioned. Also, by example, the epoxy group-containing group is, for example, as a monomer component using a ^{"HOSi (R l) (R} 2) OH" (R l is a group, containing an epoxy group R ² is a hydrogen atom or a hydrocarbon group), to introduce in the molecule Can be.

In addition, the modified silicone-based polymer component may have a chain form of any one of linear and branched chains, or a mixture thereof.

Moreover, in the UV cationic silicone peeling treatment agent, various ultraviolet cleavage type initiators (photopolymerization initiators) are used 1 type or in combination of 2 or more types. As such an ultraviolet cleavage initiator, an onium salt-based ultraviolet cleavage initiator (onium salt-based photopolymerization initiator) can be preferably used. In addition, an ultraviolet cleavage type initiator can be used individually or in combination of 2 or more types.

As an onium salt-based ultraviolet cleavage initiator used as an ultraviolet cleavage initiator, it is described in the onium salt photoinitiator of Unexamined-Japanese-Patent No. 6-32873, or Unexamined-Japanese-Patent No. 2000-281965, for example. Onium salt type photoinitiator, Onium salt type photoinitiator described in Unexamined-Japanese-Patent No. 11-228702, Onium salt type photoinitiator described in Unexamined-Japanese-Patent No. 8-26120, etc. are mentioned. . Examples of such onium salt-based ultraviolet cleavage initiators include diaryl iodonium salts, triarylsulfonium salts, triaryl selenium salts, tetraarylphosphonium salts, and aryldiazonium salts. The diaryl iodonium salt is preferable as the onium salt-based ultraviolet cleavage initiator.

More specifically, for example, diaryl iodonium salts as represented by _{^{"Y 2 I + X - -}} ( the non-nucleophilic or being the anion of a non-basic Y represents an aryl group which may have a substituent also, X.)" The compound can be mentioned. In addition, X ^- Examples of non-nucleophilic, or the anion of a non-basic in, for _{^{example, SbF 6 -, SbCl 6 -}} , BF 4 -, [B (C 6 H 5) 4] -, [B (C 6 F 5) 4 ] ^- , [B (C ₆ H ₄ CF ₃ ) ₄ ] ^- , [(C ₆ F ₅ ) ₂ BF ₂ ] ^- , [C ₆ F ₅ BF ₃ ] ^- , [B (C ₆ H ₃ F ₂ ) _{^{4] -, AsF 6 -,}} PF 6 -, HSO 4 - and ClO ₄ ^-, and the like.

Moreover, the triaryl sulfonium salt, the triaryl selenium salt, the tetraaryl phosphonium salt, and the aryl diazonium salt can mention the compound corresponding to the said diaryl iodonium salt. Specifically, the triarylsulfonium salt, triaryl seleno salts, tetra aryl phosphonium salts, and aryl diazonium salts as, _{^{respectively, "Y 3 S + X -}} ", "Y 3 Se + X -", "Y 4 P + The compound represented by X < ^- > and "YN <_2> ⁺ X < ^- > (Y, X <^->) is the same can be used.

As the onium salt-based UV cleavage initiator, an ultraviolet cleavage initiator containing an antimony atom (antimony ultraviolet cleavage initiator), an ultraviolet cleavage initiator containing a boron atom (boron-based ultraviolet cleavage initiator) can be preferably used. In particular, the diaryl iodonium salt type | system | group ultraviolet-ray cleavage initiator containing an antimony atom or the diaryl iodonium salt type | system | group ultraviolet ray cleavage initiator containing a boron atom is preferable.

Therefore, as a UV cationic silicone peeling treatment agent, what contains the modified silicone type polymer component (epoxy group containing polysiloxane component) which has two or more epoxy groups in a molecule, and an ultraviolet cleavage initiator at least, etc. are mentioned, for example. In the UV cationic silicone peeling treatment agent, the ratio of the ultraviolet cleavage initiator is not particularly limited as long as it is a catalytic amount. For example, 0.1 to 8 parts by weight (preferably 0.3 to 5 parts by weight), based on 100 parts by weight of the epoxy group-containing polysiloxane component, More preferably from 0.5 to 3 parts by weight).

The heat treatment UV cationic silicone peeling treatment agent layer is applied to a predetermined portion at least partially (whole surface or partial) on at least one surface of the substrate, and then is subjected to heat treatment at a predetermined temperature. Then, it can form by performing an ultraviolet irradiation process. When apply | coating a UV cationic silicone peeling processing agent, it is important to apply | coat in a suitable coating amount. If the application amount of the UV cationic silicone peeling treatment agent is too small, the peel strength (the force required for peeling) becomes large, and a problem arises in practical use. On the other hand, if it is too large, the cost is high and economically disadvantageous. As an appropriate coating amount (solid content) of a UV cationic silicone peeling processing agent, the adhesive layer in which the kind of UV cationic silicone peeling processing agent, the kind of base material which apply | coats a UV cationic silicone peeling processing agent, and the heat-processing UV cationic silicone peeling processing agent layer overlaps, Although it can select suitably according to the kind etc. of the adhesive which forms ,, it is about 0.01-10 g / m <2>, Preferably it is 0.05-5 g / m <2>.

In addition, a well-known heating apparatus can be used when heat-processing to the coating layer (uncured UV cationic silicone peeling processing agent layer) of a UV cationic silicone peeling processing agent. For example, the method of heat-processing by putting in the heating oven set to predetermined temperature for a predetermined time, etc. are mentioned. As heat processing temperature, it can select from the range of 35-120 degreeC according to the kind of UV cationic silicone peeling processing agent, the kind of base material, etc., Preferably it is 40-110 degreeC (more preferably 50-100 degreeC) )to be. Moreover, as heat processing time, it can select from the range of 3 second-2 minutes (preferably 5 second-1 minute), for example. Moreover, when heat processing temperature is less than 35 degreeC, the adhesive improvement effect of a heat processing UV cationic silicone peeling processing agent layer and a base material will fall, and when it exceeds 120 degreeC, it is contained as an active ingredient in a UV cationic silicone peeling processing agent. The modified silicone polymer component (modified silicone polymer component in which a cationic polymerization reactive functional group is introduced into the polysiloxane component of the main chain) may be volatilized, which is not preferable.

In addition, when performing an ultraviolet irradiation process to the uncured UV cationic silicone peeling agent layer to which heat processing was performed, a well-known ultraviolet irradiation treatment method can be used suitably. The irradiation energy or irradiation time of the ultraviolet ray is not particularly limited, and the ultraviolet ray cleavage initiator (photopolymerization initiator) can be activated to cure the uncured UV cationic silicone release treatment agent layer.

Although it does not restrict | limit especially as thickness of a heat processing UV cationic silicone peeling processing agent layer, For example, it can select from the range of 0.01-5 micrometers (preferably 0.05-4 micrometers, More preferably, 0.1-3 micrometers).

(materials)

As mentioned above, the peeling base material of this invention has the heat processing UV cationic silicone peeling agent layer at least partially on one side or both surfaces of a base material. Specifically, the release treatment base material is heat treated UV on one side of the release liner or base material (adhesive tape or sheet base material) having a heat-treated UV cationic silicon release treatment agent layer on one or both sides of the base material (base material for peeling liner). It has a cationic silicone peeling treatment agent layer, and can be used as a base material for adhesive tapes or sheets on which the other side is a back surface treatment which is a surface for forming an adhesive layer. Therefore, the base material for peeling liners, the adhesive tape, or the base material for a sheet can be used as a base material. As such a base material, it can select suitably from various base materials, such as a paper base material, a plastic base material, a fibrous base material, and a metal base material, for example according to the kind of base material (base material for peeling liner, an adhesive tape, a base material etc.). . A base material can be used individually or in combination of 2 or more types. The substrate may have the form of a single layer or may have a stacked form. Therefore, the substrate may be, for example, a laminate of a metal substrate and a plastic substrate or a laminate of a paper substrate and a plastic substrate. However, as a base material, it contains the component which inhibits hardening of a UV cationic silicone peeling processing agent, and when it coats a UV cationic silicone peeling processing agent, it extracts in a UV cationic silicone peeling processing agent, The base material which produces hardening defect is not preferable.

Moreover, as a paper base material, for example, Japanese paper, Japanese paper, good quality paper, glassine paper, kraft paper, crew pack paper, crepe paper, clay coated paper, top coated paper, synthetic paper, plastic laminate paper, plastic coated paper, etc. Can be. It is important to use the base component which does not appear in the surface layer or does not come out on the surface to which the UV cationic silicone peeling treatment agent is apply | coated as a paper base material so that hardening inhibition of a UV cationic silicone peeling treatment agent may not generate | occur | produce. Moreover, as a paper base material, the paper base material which has heat resistance can also be used preferably. As a paper base material which has heat resistance, the paper base material (for example, neutral paper etc.) to which the neutralization process was performed is mentioned.

As the plastic base material, for example, a polyolefin sheet or film (polyethylene sheet or film, polypropylene sheet or film, ethylene-propylene copolymer sheet or film, etc.), vinyl chloride resin sheet or film, acetic acid Vinyl resin sheets or films, fluorine resin sheets or films, cellophanes, and the like. Moreover, as a plastic base material, the plastic base material which has heat resistance can also be used preferably. As the plastic base material having heat resistance, for example, a polyester sheet or film (polyethylene terephthalate sheet or film, polyethylene naphthalate sheet or film and polybutylene terephthalate sheet or film, etc.), polyphenylene sulfide First sheet or film, polyether ether ketone sheet or film, polyamideimide sheet or film, polyetherimide sheet or film, polyimide sheet or film, and amide resin sheet or film (polyamide sheet or Film, a wholly aromatic polyamide sheet or film, etc.), etc. are mentioned.

Moreover, as a fibrous base material, natural fiber, semisynthetic fiber, or synthetics, such as cotton fiber, artificial fiber, manila hemp, pulp, rayon, acetate fiber, polyester fiber, polyvinyl alcohol fiber, polyamide fiber, and polyolefin fiber, for example Cloth-based substrates such as woven or nonwoven fabrics such as single or mixed fibers containing fibrous materials of fibers, and the like. Examples of the metal-based substrates include aluminum foil, copper foil, stainless steel foil, iron foil, and the like. Can be mentioned. In addition, it is preferable that the metallic substrate having a basic surface as the metallic substrate causes the inhibition of curing of the UV cationic silicone release treatment agent, and thus is deactivated.

It does not restrict | limit especially as thickness of a base material, According to the kind of base material, the use of a peeling process base material, etc., it can select suitably, For example, it can select from the range of 2-1000 micrometers. Specifically, the thickness of the paper substrate is preferably 50 to 150 µm, and the thickness of the plastic substrate is preferably 6 to 250 µm.

Moreover, in order to improve adhesiveness with the heat treatment UV cationic silicone peeling treatment agent layer, etc., on the surface of a base material, in addition to coating treatment with various coating agents, such as conventional surface treatment, for example, an undercoat (undercoat agent), chromic acid treatment, ozone Various treatments, such as exposure, flame exposure, high pressure electric shock exposure, and ionizing radiation treatment, may be performed. As the primer, known primers (preferably acrylic primers) such as acrylic primers and rubber primers (styrene-butadiene block copolymerization primers) can be used. Moreover, although it is preferable that the undercoat layer by a undercoat agent has transparency, it may be colored according to a use etc. However, the surface treatment which inhibits hardening of a UV cationic silicone peeling processing agent as surface treatment is not preferable. For example, in the case where the surface treatment is a coating treatment with a primer, the primer contains a component that inhibits the curing of the UV cationic silicone peeling treatment agent, and the UV cationic silicone peeling treatment agent is applied after the treatment with the primer. When coating, the undercoat agent which extracts in a UV cationic silicone peeling processing agent and produces | generates the hardening of a UV cationic silicone peeling processing agent is not preferable.

When the peeling process base material of this invention is a peeling liner, it has the heat processing UV cationic silicone peeling agent layer at least partially on one side or both surfaces of a base material (base material for peeling liners) as mentioned above. That is, when the release treatment base material is a release liner, the heat treatment UV cationic silicone release treatment agent layer may be formed entirely or partially on one side of the release liner base material, or may be entirely on one side of the release liner base material or It may be partially formed and may be formed entirely or partially on the other side. For example, when the heat treatment UV cationic silicone release agent layer is partially formed on either side of the base material for the release liner, the heat treatment UV cationic silicon release treatment agent layer is not formed on the portion where the heat treatment UV cationic silicone release agent layer is not formed. Peeling agent layers other than a cationic silicone peeling agent layer may be formed.

In addition, when the heat treatment UV cationic silicone release agent layer is formed on one side (cross section) of the base material for release liner, a release agent layer other than the heat treatment UV cationic silicone release agent layer may be formed on the other side. have. Moreover, as peeling agent layers other than a heat-processing UV cationic silicone peeling agent layer, after apply | coating a UV cationic silicone peeling treatment agent, the UV cationic silicone peeling agent layer formed by performing an ultraviolet irradiation process, without performing heat processing, or Peeling agents formed by using a peeling agent other than the UV cationic silicone peeling agent (for example, a fluorine-based peeling agent, a long-chain alkyl-based peeling agent, etc., in addition to an ultraviolet curable silicone-based peeling agent such as a radical addition polymerizable ultraviolet curable silicone-based peeling agent). Layer etc. are mentioned.

In addition, when the heat processing UV cationic silicone peeling treatment agent layer is formed in both surfaces of the base material for peeling liners, the heat treatment UV cationic silicone peeling treatment agent layer of both surfaces has the same UV cationic system as two UV cationic silicone peeling treatment agents. It may be formed by a silicone peeling treatment agent, or may be formed by another UV cationic silicone peeling treatment agent. In addition, the thickness of each heat treatment UV cationic silicone peeling agent layer may be the same, and may differ.

Thus, in the case of a peeling liner of this invention, when it is a peeling liner, it can be used as a peeling liner for protecting the adhesive surface (for example, the adhesive layer surface in an adhesive tape or a sheet) in various adhesive products. In addition, the adhesive product to which the peeling treatment base material can be applied is not particularly limited as long as it has an adhesive surface, and shapes other than the sheet shape other than the adhesive product having a sheet shape such as adhesive tape or sheet, adhesive film and adhesive label. And various products having, for example, a circuit board having an adhesive layer formed at least partially on one or more surfaces thereof. As such an adhesive product, according to the kind of each adhesive product, it can select from a well-known adhesive product suitably, and can use. Specifically, when the adhesive product is an adhesive tape or sheet, as the adhesive tape or sheet, a substrate having a pressure-sensitive adhesive layer made of a known adhesive is attached to at least one surface of a known adhesive tape or sheet (for example, a known substrate). The adhesive tape or sheet of the attached form, the adhesive tape or sheet of the form in which the base material which has only the adhesive layer by a well-known adhesive agent is not affixed, etc. are mentioned.

In addition, when the peeling process base material of this invention is an adhesive tape or a base material for a sheet | seat, it heat-processes UV cation at least partially (whole or partly) to one side of a base material (adhesive tape or sheet base material) as mentioned above. It has a type | system | group silicone peeling treatment agent layer, and the other surface is a surface for forming an adhesive layer. That is, when the peeling base material of this invention is a base material for adhesive tapes or sheets, the surface in which the heat processing UV cationic silicone peeling agent layer in a peeling base material is not formed, or the surface which is not formed (for forming an adhesive layer By providing an adhesive layer in the surface), an adhesive tape or a sheet is obtained. In this case, an adhesive layer may be previously formed in the base material (adhesive tape or sheet | seat base material) at the time of forming a heat processing UV cationic silicone peeling agent layer. Therefore, the peeling processing base material may be a base material used when manufacturing an adhesive tape or sheet, and may be a base material in an adhesive tape or sheet.

(Adhesive layer)

As an adhesive which forms the said adhesive layer, a well-known adhesive can be used, for example. Examples of the pressure-sensitive adhesives include acrylic pressure-sensitive adhesives, rubber pressure-sensitive adhesives, silicone pressure-sensitive adhesives, vinyl alkyl ether pressure-sensitive adhesives, polyester pressure-sensitive adhesives, polyamide pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, fluorine-based pressure-sensitive adhesives, styrene-diene block copolymer-based pressure-sensitive adhesives and melting points thereof. A creep characteristic improvement type adhesive etc. which mix | blended this heat-melt resin which is about 200 degrees C or less are mentioned. An adhesive can be used individually or in combination of 2 or more types.

As an adhesive, an acrylic adhesive and a rubber adhesive can be used preferably from a viewpoint of heat resistance. As an acrylic adhesive, 1 type (s) or 2 or more types of (meth) acrylic-acid alkylester is used as a monomer main component, and 1 type (s) or 2 or more types of monomer (copolymerizable monomer) which can copolymerize with (meth) acrylic-acid alkylester as needed is used. The acrylic adhesive which has an acrylic polymer (a single polymer or a copolymer) as a base polymer or a polymer main component is mentioned.

In the acrylic polymer, since the (meth) acrylic acid alkyl ester is used as the monomer main component, it is important that the ratio of the (meth) acrylic acid alkyl ester is 50% by weight or more relative to the total amount of the monomer component, and preferably 85 to 98% by weight. (Particularly 90 to 97% by weight). Therefore, it is important that the proportion of the copolymerizable monomer is 50% by weight or less based on the total amount of the monomer components, and preferably 2 to 15% by weight (particularly 3 to 10% by weight).

As (meth) acrylic-acid alkylester in the said acrylic adhesive, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, butyl (meth) acrylate, (meth), for example Isobutyl acrylate, s-butyl (meth) acrylate, t-butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, octyl (meth) acrylate, (meth) acrylic acid 2- Ethylhexyl, Isoocyl (meth) acrylate, Nonyl (meth) acrylate, Iononyl (meth) acrylate, Decyl (meth) acrylate, Isodecyl (meth) acrylate, Undecyl (meth) acrylate, Dodecyl (meth) acrylate , Tridecyl (meth) acrylate, tetradecyl (meth) acrylate, pentadecyl (meth) acrylate, hexadecyl (meth) acrylate, heptadecyl (meth) acrylate, octadecyl (meth) acrylate, nondecyl (meth) acrylate, and Such as (meth) acrylic acid (Meth) acrylic acid C _{1 -20} alkyl esters [preferably (meth) acrylic acid C _{2 -14} alkyl (straight chain or branched alkyl) esters] and the like.

As a copolymerizable monomer in an acrylic adhesive, For example, Carboxyl group containing monomers, such as (meth) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, and isocrotonic acid, or its anhydride; Amide group-containing monomers such as acrylamide, methacrylamide, N-vinylpyrrolidone and N, N-dimethyl (meth) acrylamide; Amino group-containing monomers such as aminoethyl (meth) acrylate and (meth) acryloyl morpholine; Hydroxyl group-containing monomers such as hydroxyalkyl (meth) acrylate or glycerin dimethacrylate such as hydroxyethyl (meth) acrylate or hydroxypropyl (meth) acrylate; Epoxy group-containing monomers such as glycidyl (meth) acrylate and methylglycidyl (meth) acrylate; Imide group-containing monomers such as cyclohexyl maleimide and isopropyl maleimide; Isocyanate group-containing monomers such as 2-methacryloyloxyethyl isocyanate; Sulfonic acid group-containing monomers such as sodium vinyl sulfonate; Aromatic vinyl compounds such as styrene and substituted styrene; Cyano group-containing monomers such as acrylonitrile or methacrylonitrile; Olefins or dienes such as ethylene, butadiene, isoprene and isobutylene; Vinyl esters such as vinyl acetate; Vinyl ethers such as vinyl alkyl ethers; Vinyl chloride etc. are mentioned. Moreover, as a copolymerizable monomer, the monomer (polar group containing monomer) which has polar groups, such as a carboxyl group, an amide group (amide bond containing group), an amino group, and a hydroxyl group (hydroxyl group), can be used preferably.

A crosslinking agent (crosslinking agent) known as a crosslinking agent can be used for an acrylic adhesive in order to improve the retention characteristic of an adhesive, etc. Although it does not restrict | limit especially as such a crosslinking agent, For example, an epoxy type crosslinking agent (polyethylene glycol diglycidyl ether, diglycidyl ether, trimethylol propane triglycidyl ether etc.), an isocyanate type crosslinking agent (tolylene diisocyanate, trimethylol propane) Triisocyanate, diphenylmethane diisocyanate, etc.), a metal chelate crosslinking agent, a metal salt crosslinking agent, a peroxide crosslinking agent, a melamine type crosslinking agent, an amino crosslinking agent, and a coupling agent crosslinking agent (silane coupling agent etc.) etc. are mentioned.

In the acrylic pressure sensitive adhesive, when performing photopolymerization, a polyfunctional copolymerizable monomer (polyfunctional monomer) may be used as the copolymerizable monomer. As such a polyfunctional monomer, for example, ethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, and propylene glycol Di (meth) acrylate, 1,4-butylene glycoldi (meth) acrylate, neopentylglycoldi (meth) acrylate, 1,6-hexanedioldi (meth) acrylate, trimethylolpropane or modified thereof Chain tri (meth) acrylate, bisphenol A or its modified di (meth) acrylate, tetramethylolmethanetetra (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylic Di (meth) acrylate and tris (2-hydroxy) of latex, dipentaerythritol hexa (meth) acrylate, divinylbenzene, tris (2-hydroxyethyl) isocyanurate Butyl) isocyanurate may be mentioned tri (meth) acrylate such as a cyanurate. In addition, when performing photopolymerization, an acetophenone type photoinitiator, a benzophenone type photoinitiator, a benzoin type photoinitiator, a benzyl type photoinitiator, a benzoin alkyl ether type photoinitiator, a ketal type photoinitiator, a thioxanthone type photoinitiator, for example. Known or conventional photoinitiators such as an initiator, an α-ketol photoinitiator, an aromatic sulfonyl chloride photoinitiator and a photoactive oxime photoinitiator can be used.

As the rubber-based pressure-sensitive adhesive, natural rubber or synthetic rubber is used as the base polymer. Examples of the synthetic rubber include acrylonitrile-butadiene rubber, polyisoprene rubber, polybutadiene rubber, styrene-isoprene (SI) rubber, styrene-butadiene (SB) rubber and styrene-isoprene-styrene block copolymer (SIS). Rubber, styrene-butadiene-styrene block copolymer (SBS) rubber, styrene-ethylene-butylene-styrene block copolymer (SEBS) rubber, styrene-ethylene-propylene-styrene block copolymer (SEPS) rubber, styrene-ethylene- Propylene block copolymer (SEP) rubber, ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber, recycled rubber, butyl rubber, polyisobutylene or modified substances thereof. In particular, carboxyl-modified acrylonitrile-butadiene rubber is preferable as the rubber-based adhesive from the viewpoint of heat resistance.

As the rubber-based pressure-sensitive adhesive, a crosslinking agent (cross-linking agent) known as a cross-linking agent can be used as the acrylic pressure-sensitive adhesive in order to improve the retention characteristics and the like of the pressure-sensitive adhesive. Although it does not restrict | limit especially as such a crosslinking agent, For example, sulfur, a peroxide crosslinking agent, a metal chelate crosslinking agent, a quinoid crosslinking agent, an epoxy crosslinking agent, an isocyanate type crosslinking agent, a metal salt type crosslinking agent, a melamine type crosslinking agent, an amino type crosslinking agent, and a peeling agent type Crosslinking agents (silane coupling agents etc.) etc. are mentioned.

When high heat resistance is required as an adhesive, the base polymer (acrylic polymer or synthetic rubber, etc.) of an adhesive can be superposed | polymerized by ultraviolet irradiation, or its polymer or crosslinking agent (for example, epoxy crosslinking agent etc.) What can be bridge | crosslinked or its crosslinked material can be used preferably. As described above, when a base polymer (such as an acrylic polymer or a synthetic rubber) of the pressure-sensitive adhesive is capable of crosslinking with a crosslinking agent or a crosslinked product thereof, reactive functional groups such as carboxyl groups, hydroxyl groups and amino groups are introduced into the base polymer. It is desirable to have.

The pressure-sensitive adhesive may include, if necessary, a tackifier (for example, a tackifier including a rosin derivative resin, a polyterpene resin, a petroleum resin, and an oil-soluble phenol resin), a plasticizer, a softener, a filler, a coloring agent (such as a pigment or a dye), and the like. And various known additives such as anti-aging agents may be added.

Although it does not restrict | limit especially as thickness of an adhesive layer, For example, it can select from the range of 1 micrometer-1.2 mm, Preferably it is 5-80 micrometers.

The pressure-sensitive adhesive layer may have a form of a single layer or may have a form laminated in multiple layers.

An adhesive layer can be formed using the formation method of a well-known adhesive layer. For example, the method of forming an adhesive by applying it directly to the surface for forming the adhesive layer in an adhesive tape or a sheet | seat base material, and drying or hardening | curing in the coating amount whose thickness after drying becomes a predetermined thickness, or a suitable separator (foil A pressure-sensitive adhesive layer is coated on a ridge or the like) in an application amount such that the thickness after drying becomes a predetermined thickness, and the pressure-sensitive adhesive layer is formed by drying or curing, and the pressure-sensitive adhesive layer is formed on the surface for forming the pressure-sensitive adhesive layer in the base material for adhesive tape or sheet. The pressure-sensitive adhesive layer can be formed by a method of transferring (adhering: coating) and forming.

In addition, when forming an adhesive layer, as needed, a crosslinking process can be performed by heating etc., or superposition | polymerization can be performed by irradiation of an electromagnetic wave (ultraviolet ray, an electron beam, etc.). Moreover, an adhesive layer can also be formed using a melt extrusion method.

In addition, an adhesive layer may be previously formed in the predetermined surface of an adhesive tape or sheet base material, before forming a heat treatment UV cationic silicone peeling agent layer, and may heat-process UV cation on one side of an adhesive tape or sheet base material It can also form in the predetermined surface of the peeling process base material used as a type | system | group silicone peeling agent layer.

The adhesive layer surface (adhesive surface) in such an adhesive tape or sheet can be protected by overlapping with the heat processing UV cationic silicone peeling agent layer in the peeling process base material as an adhesive tape or sheet base material, and winding in roll shape.

Since the peeling base material of this invention is manufactured by heat-processing after apply | coating a UV cationic silicone peeling process agent or before performing an ultraviolet irradiation process as mentioned above, when ultraviolet irradiation process is performed, reaction rate will become high. In some cases, the effect of increasing the conversion rate is increased. In addition, when conversion rate becomes high in this way, it is not necessary to perform aging after an ultraviolet irradiation process. Moreover, it is also possible to remove the moisture of the reaction inhibitor at the time of performing an ultraviolet irradiation process at the time of heat processing. Moreover, the leveling effect of a coating surface can also be exhibited.

[Production Method of Peeling Substrate]

The manufacturing method of the peeling process base material of this invention is a method of manufacturing the said peeling process base material, Not only the cationically polymerizable ultraviolet curing silicone type peeling agent is apply | coated and formed at least partially on one side or more of a base material, The process of heat-processing is provided with respect to the coating layer of the cationically polymerizable ultraviolet curable silicone type peeling agent which is not performed. Therefore, the said peeling process base material can be manufactured by the manufacturing method provided with the following process (A)-(C).

Process (A): The process of apply | coating a UV cationic silicone peeling treatment agent at least partially on one side or more of a base material (coating process)

Process (B): The process of heat-processing about the coating layer of a UV cationic silicone peeling processing agent (heat processing process)

Process (C): The process of performing an ultraviolet irradiation process with respect to the coating layer of the heat-treated UV cationic silicone peeling treatment agent (ultraviolet irradiation process process)

In a process (A), the UV cationic silicone peeling process agent is apply | coated to the predetermined | prescribed site | part on the predetermined surface of a base material (base material for peeling liners, an adhesive tape, a sheet base material, etc.). When applying the UV cationic silicone release treatment agent, a conventional coater (for example, a gravure roll coater, a reverse roll coater, a kiss roll coater, a dip roll coater, a bar coater, a knife coater, a spray coater, etc.) can be used. . In addition, it is important that the application amount of a UV cationic silicone peeling treatment agent is an appropriate application amount (for example, 0.01 to 10 g / m 2).

In addition, after performing said process (A) at a process (B), it is applied to the application layer (uncured UV cationic silicone peeling treatment agent layer) of the UV cationic silicone peeling treatment agent in the base material with which the UV cationic silicone peeling treatment agent was apply | coated. The heat treatment is performed. When heat-processing to the coating layer of a UV cationic silicone peeling processing agent, well-known heating apparatuses (for example, heating apparatuses, such as a heating oven, a hotplate, a hot air dryer, a near-infrared lamp, and an air dryer), can be used. As heating temperature, it can select from the range of 35-120 degreeC (preferably 40-110 degreeC, more preferably 50-100 degreeC), and as heating time, it is 3 second-2 minutes (preferably 5 second-1 minute). You can choose from the range of.

In addition, when heat-processing to the coating layer of a UV cationic silicone peeling agent, it can also heat-process so that only a coating layer of a UV cationic silicone peeling agent can be heat-processed, and application of a UV cationic silicone peeling agent is apply | coated You may heat-process the whole base material which has a layer.

In addition, in the process (C), after performing the said process (B), after the UV cationic silicone peeling agent is apply | coated, the ultraviolet ray irradiation process is performed with respect to the application layer of the UV cationic silicone peeling agent which heat-processed. . When performing an ultraviolet irradiation process to the coating layer of the heat-treated UV cationic silicone peeling treatment agent, a well-known ultraviolet irradiation apparatus (for example, a fusion (H) lamp, a metal halogen lamp, a high pressure mercury lamp as a light source (ozone) Ultraviolet irradiation device using a generation type, a type without ozone) and the like can be used. In particular, by using a fusion (H) lamp as a light source, the ultraviolet irradiation treatment can be performed with high productivity. Moreover, as roughness [roughness measured using "microcure" by the EIT company], for example, 10 to 3000 (cc / cm 2) [preferably 50 to 2500 (cc / cm 2), more preferably 100 to 2200 (cc / cm 2)] can be appropriately selected. Moreover, as line speed at the time of irradiation, it can select suitably from the range of 1-200 m / min (preferably 3-180 m / min, More preferably, 10-150 m / min).

In addition, when performing an ultraviolet irradiation process to the coating layer of the heat-treated UV cationic silicone peeling treatment agent, an ultraviolet irradiation treatment is performed so that only the coating layer of the heat-treated UV cationic silicone peeling treatment agent may be performed. May be performed, and ultraviolet irradiation treatment may be performed on the entire substrate having a coating layer of a heat treatment UV cationic silicone release treatment agent.

In this invention, (1) method (A), a process (B), and a process (C) are discontinuously implemented as independent processes, respectively, (2) process (A) and a process (B) as a series of processes. After carrying out continuously, the method of performing a process (C), (3) After carrying out a process (A), a process of carrying out a process (B) and a process (C) continuously as a series of processes, (4) process Each process can be performed by the method of continuously performing (A), a process (B), and a process (C) as a series of process.

<Example>

Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited by these Examples. In addition, the following "parts" mean "weight part" and "%" means "weight%", respectively. In addition, in manufacture or measurement of a peeling process base material, conditions, such as temperature, when not restrict | limiting conditions, such as temperature, are conditions of 23 degreeC and 50% RH.

(Example 1)

To 100 parts of trade name "X-62-7629" (manufactured by Shin-Etsu Chemical Co., Ltd.), 1 part of trade name "CAT-7603" (manufactured by Shin-Etsu Chemical Co., Ltd.) is added and stirred to form a cationically polymerizable polymer. The peeling process liquid as an ultraviolet curing silicone crab peeling process agent was obtained.

This peeling treatment liquid was applied to one side of the good-quality paper (70 g basis weight), heated in a batch heating oven (set temperature: 80 ° C.) for 30 seconds, and then a high-pressure mercury lamp (ozone generation type, output: 80 W / Cm) The ultraviolet irradiation process was performed by conveyor conveyance of the line speed of 10 m / min per light, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 1.5 g / m <2> (solid content).

In addition, the maximum temperature of the material surface at the time of heat processing with the heating oven was 77 degreeC. The measurement of this surface temperature was performed by the simple temperature detection label (brand name "thermo label" made by Nichiyu Gijutsu Co., Ltd.).

(Example 2)

A peeling treatment liquid was obtained in the same manner as in Example 1. This peeling treatment liquid was applied to one side of the same quality paper (70 g basis weight) as in Example 1, and heated in a batch heating oven (set temperature: 40 ° C.) for 60 seconds, followed by a high pressure mercury lamp (ozone generation type, Output: 80 W / cm) Ultraviolet irradiation process was performed by conveyor conveyance of the line speed of 10 m / min per light, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 1.6 g / m <2> (solid content). In addition, the maximum temperature of the material surface at the time of heat processing with the heating oven was 40 degreeC.

(Example 3)

A peeling treatment liquid was obtained in the same manner as in Example 1. This peeling treatment liquid was applied to one side of the same quality paper (70 g basis weight) as in Example 1, heated in a batch heating oven (set temperature: 110 ° C) for 30 seconds, and then a high-pressure mercury lamp (ozone generation type, Output: 80 W / cm) Ultraviolet irradiation process was performed by conveyor conveyance of the line speed of 10 m / min per light, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 1.4 g / m <2> (solid content). In addition, the maximum temperature of the material surface at the time of heat processing by the heating oven was 107 degreeC.

(Example 4)

To 100 parts of brand name "UV9300" (GE Toshiba Silicone Co., Ltd.), 1.5 parts of brand name "UV9380C" (GE Toshiba Silicone Co., Ltd.) was added and stirred to obtain a peeling treatment liquid as a cationically polymerizable ultraviolet curable silicone-based peeling treatment agent.

This peeling treatment liquid was applied to one side of a polyethylene film (trade name "NSO" manufactured by Kokura Kogyo Co., Ltd.), heated in a batch heating oven (set temperature: 80 ° C) for 30 seconds, and then a high-pressure mercury lamp (ozone generation type) , Output: 80 W / cm) Ultraviolet irradiation treatment was performed by conveyor conveyance of the line speed of 10 m / min per light, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 1.0 g / m <2> (solid content). In addition, the maximum temperature of the material surface at the time of heat processing with the heating oven was 78 degreeC.

(Example 5)

A peeling treatment liquid was obtained in the same manner as in Example 1. This peeling treatment liquid was applied to one side of the same quality paper (70 g basis weight) as in Example 1, heated in a batch heating oven (set temperature: 80 ° C) for 30 seconds, and then a high-pressure mercury lamp (ozone generation type, Output: 80 W / cm) Ultraviolet irradiation process was performed by conveyor conveyance of the line speed of 10 m / min per light, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 0.3 g / m <2> (solid content). In addition, the maximum temperature of the material surface at the time of heat processing with the heating oven was 77 degreeC.

(Example 6)

A peeling treatment liquid was obtained in the same manner as in Example 1. This peeling treatment liquid was applied to one side of the same quality paper (70 g basis weight) as in Example 1, heated in a batch heating oven (set temperature: 80 ° C) for 30 seconds, and then a high-pressure mercury lamp (ozone generation type, Output: 80 W / cm) Ultraviolet irradiation process was performed by conveyor conveyance of the line speed of 10 m / min per light, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 3.5 g / m <2> (solid content). In addition, the maximum temperature of the material surface at the time of heat processing with the heating oven was 77 degreeC.

(Comparative Example 1)

A peeling treatment liquid was obtained in the same manner as in Example 1. After applying this peeling treatment liquid to one side of the same high-quality paper (70 g basis weight) as in Example 1, a high-speed mercury lamp (ozone generation type, output: 80 W / cm) at a line speed of 10 m / min per light An ultraviolet irradiation process was performed by conveyor conveyance. Then, it heated in the batch heating oven (set temperature: 80 degreeC) for 30 second, and obtained the peeling process base material. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 1.5 g / m <2> (solid content). In addition, the maximum temperature of the material surface at the time of heat processing with the heating oven was 78 degreeC.

(Comparative Example 2)

A peeling treatment liquid was obtained in the same manner as in Example 1. After applying this peeling treatment liquid to one side of the same high-quality paper (70 g basis weight) as in Example 1, a high-speed mercury lamp (ozone generation type, output: 80 W / cm) at a line speed of 10 m / min per light Ultraviolet irradiation processing was performed by conveyor conveyance, and the peeling process base material was obtained. In addition, in the obtained peeling process base material, the application amount of the cationically polymerizable ultraviolet curable silicone type peeling agent was 1.6 g / m <2> (solid content).

(evaluation)

Regarding the peeling substrates obtained in Examples 1 to 6 and Comparative Examples 1 and 2, the adhesiveness to the substrate of the cationic polymerizable ultraviolet curable silicone-based peeling agent layer and the peeling force to the pressure-sensitive adhesive layer of the peeling substrate are as follows. It measured or evaluated by the measuring method or evaluation method of. Measurement or evaluation results are shown in Table 1.

(Evaluation method of adhesiveness)

The peeling substrate is placed on the glass plate with the surface on the side where the film formed by the cationically polymerizable ultraviolet curable silicone-based peeling agent layer is formed facing up, and the Shore A hardness (JISK6301 spring type A) having a contact area of 10 mm × 10 mm is 70. The film (cationic polymerizable UV curable silicone-based peeling treatment agent layer) when the phosphorus silicone rubber was placed on the film and subjected to five or ten times an operation of amplifying 10 cm at a speed of 1 m / min with a pressure friction of 0.5 MPa. The dropping state was observed and the adhesiveness with respect to the base material of a cationically polymerizable ultraviolet curable silicone type peeling processing agent layer was evaluated by the following reference | standard.

Evaluation standard

(Double-circle): Even if it rubs 10 times, there is no fall | off of a film at all.

(Circle): Even if it rubs five times, there is no fall | off of a film, but when rubbed ten times, the surface layer is slightly scratched.

(Triangle | delta): When rubbed 5 times, a part of film will fall.

X: When rubbed 5 times, most of a film falls out. Or smears occur.

(Measuring method of peeling force)

120 degreeC when the said adhesive solution is apply | coated on the peeling process surface (namely, the surface in which the film | membrane by the cationically polymerizable ultraviolet curable silicone type peeling agent layer is formed) of a peeling process base material, and the base material in a peeling process base material is a quality paper. 2 minutes, in the case of a polyethylene film, the drying process was performed at 80 degreeC for 3 minutes, the adhesive layer (pressure sensitive adhesive layer) of thickness 50micrometer was formed, and the adhesive sheet was manufactured.

95 parts of pressure-sensitive adhesive solutions butyl acrylate and 5 parts of acrylic acid were added, and solution polymerization was carried out while stirring ethyl acetate as a solvent at 60 ° C under nitrogen substitution, to obtain a pressure-sensitive adhesive composition having a viscosity of about 100 Pa.s, a polymerization rate of 99.3%, and a solid content of 32%. A solution was prepared, and 0.1 part (solid content) of a polyfunctional epoxy crosslinking agent (brand name "Tetrade C" Mitsubishi Gas Chemical Co., Ltd. product) was added to 100 parts (solid content) of this solution, and the adhesive solution was obtained.

After the 25-micrometer-thick polyester film was adhere | attached on the surface of the adhesive layer side of an adhesive sheet, it cut into length of 150 mm by 50 mm width. The cut pieces are attached to each other to form a plate, and the peeled base material side is stretched at an angle of 300 mm / min and an angle of 180 ° C. with a Tensilon tensile tester under the conditions of 23 ° C. and 50% RH. The stress (N / 50 mm) (maximum value except the peak top of the measurement initial stage) was measured, and this maximum stress was made into peeling force (N / 50 mm).

As is apparent from Table 1, since the peeling treatment base material according to the embodiment is subjected to heat treatment before performing the ultraviolet irradiation treatment, the cationic polymerizable ultraviolet curable type hardly changes the peeling force on the pressure-sensitive adhesive layer of the peeling treatment base material. It was confirmed that the adhesiveness with respect to the base material of a silicone type peeling agent layer can be improved.

According to the peeling base material of this invention, the adhesiveness of the peeling agent layer and base material by a cationically polymerizable ultraviolet curing silicone type peeling agent is excellent. Therefore, even when exposed under conditions of excessive heating or humidification or stored for a long time, dropping of the silicon component in the release agent layer from the substrate can be suppressed or prevented.

Claims (7)

At least partially on at least one surface of the substrate, at least partially having a release treatment agent layer by a cationically polymerizable ultraviolet curable silicone release treatment agent, and at least partially applying a cationically polymerizable ultraviolet curable silicone release treatment agent to at least one surface of the substrate, or an ultraviolet ray The heat treatment is performed before performing an irradiation process, The peeling process base material characterized by the above-mentioned. The peeling treatment base material of Claim 1 whose cationically polymerizable ultraviolet curable silicone type | system | group peeling agent is a cationically polymerizable ultraviolet curable silicone type | system | group peeling agent which uses the modified silicone type polymer component which has two or more epoxy groups in a molecule as an active component. The peeling treatment base material of Claim 1 whose temperature at the time of heat processing is 35-120 degreeC. The surface of the side where the film | membrane by the cationically polymerizable ultraviolet curable silicone type | system | group peeling agent layer is formed is put on a glass plate, and is measured by the spring type A type according to the contact area of 10 mm x 10 mm size, and JlSK6301. When the silicone rubber having a predetermined Shore A hardness of 70 is placed on the coating and subjected to the operation of amplifying 10 cm at a speed of 1 m / min with a pressure friction of 0.5 MPa five times, the coating does not fall off from the substrate. Peeling treatment base material. The peeling treatment base material of Claim 1 whose peeling process base material is a peeling liner which has the peeling agent layer by a cationically polymerizable ultraviolet curable silicone type peeling agent on one side or both surfaces of a base material. The pressure-sensitive adhesive tape according to claim 1, wherein the peeling treatment base material has a peeling treatment agent layer of a cationic polymerizable ultraviolet curable silicone-based peeling treatment agent on one surface of the substrate, and the other surface is a surface for forming an adhesive layer, or Peeling process base material which is a base material for sheets. Not only the cationic polymerizable ultraviolet curable silicone-based peeling agent is at least partially applied to at least one surface of the base material and formed, but also a heat treatment is applied to the coating layer of the cationic polymerizable ultraviolet curable silicone-based peeling agent that is not subjected to ultraviolet irradiation treatment. It is equipped with the process to implement, The manufacturing method of the peeling process base material in any one of Claims 1-6 characterized by the above-mentioned.

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