Method for manufacturing adhesive film and method for manufacturing optical film attached to adhesive film
Patent Information
- Application Number
- TW112127346
- Authority / Receiving Office
- TW · TW
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2022-07-22
- Filing Date
- 2023-07-21
- Publication Date
- 2026-08-11
- Estimated Expiration
- 2043-07-20
AI Technical Summary
In the manufacture of adhesive sheets, although energy consumption is reduced by photocuring methods, environmental load problems during the manufacturing process are not fully considered, especially the failure to effectively utilize the deprecated release liner.
By reusing the deprecated release liner during the manufacturing process, using it as a new substrate or liner, and forming an adhesive layer under light, the peeling force of the adhesive sheet is controlled by using the antioxidant in the photocuring composition to reduce the environmental load.
It effectively reduces the environmental load during the adhesive sheet manufacturing process, realizes the recycling of release liners, and reduces resource waste and energy consumption.
Smart Images

Figure TWG2TB001905246_001 
Figure TWG2TB001905246_002 
Figure TWG2TB001905246_003
Abstract
Description
Method for manufacturing adhesive film and method for manufacturing optical film attached to adhesive film This invention relates to a method for manufacturing an adhesive sheet and a method for manufacturing an optical thin film attached to the adhesive sheet. Various image display devices, such as liquid crystal displays (LCDs) and electroluminescent (EL) displays, generally possess optical laminates comprising optical films such as polarizing films and adhesive sheets. The bonding between the optical films within the optical laminate, or the bonding between the optical laminate and the image display panel, typically uses adhesive sheets. Typically, these adhesive sheets are sheets formed by polymerizing and cross-linking monomer groups containing acrylic monomers or polysiloxane monomers. Patent Document 1 discloses an example of an adhesive sheet. In Patent Document 1, the adhesive sheet is manufactured by irradiating a coating layer of an adhesive composition disposed between two release liner materials with light. (Prior Art Documents, Patent Documents) Patent Document 1: Japanese Patent No. 6688054 The problem this invention aims to solve is that the formation of adhesive sheets using curing typically requires energy such as heat or light. For example, compared to the method of heat curing a coating layer containing adhesive components and solvent using an oven (thermal curing method), the method of using light (photocuring method) can further reduce the amount of energy required to form the adhesive sheet. However, from the perspective of reducing the environmental impact of manufacturing adhesive sheets, focusing solely on the amount of energy required for coating layer curing is still insufficient. Therefore, the present invention aims to provide a method for manufacturing adhesive sheets that can further reduce the environmental impact of the adhesive sheet manufacturing process by allowing the release liner, which was previously discarded immediately after peeling, to be reused. The present invention provides a method for manufacturing an adhesive sheet, comprising the following steps: Step A, irradiating a first laminate comprising a first substrate sheet, a first coating layer containing a first photocurable composition, and a first release liner sequentially with light, thereby forming a first adhesive sheet from the first coating layer; Step B, peeling the first release liner from the first adhesive sheet; and Step C, irradiating a second laminate comprising a second substrate sheet, a second coating layer containing a second photocurable composition, and a second release liner sequentially with light, thereby forming a second adhesive sheet from the second coating layer; In Step C, the first release liner, which has been peeled off in Step B, is used as the second substrate sheet and / or the second release liner; and at least one of the group consisting of the first photocurable composition in Step A and the second photocurable composition in Step C contains an antioxidant. Furthermore, the present invention provides a method for manufacturing an optical film of an adhesive sheet, comprising the following steps: forming an optical film of an adhesive sheet by disposing an optical film on the exposed surface of an adhesive sheet formed by the above manufacturing method. Effects of the Invention According to the present invention, a method for manufacturing an adhesive sheet can be provided, which can further reduce the environmental impact of the adhesive sheet manufacturing process by allowing the release liner material, which was previously discarded immediately after peeling, to be reused. The method for manufacturing the adhesive sheet of the first embodiment of the present invention includes the following steps: Step A, irradiating a first laminate comprising a first substrate sheet, a first coating layer containing a first photocurable composition, and a first release liner sequentially with light to form a first adhesive sheet from the first coating layer; Step B, peeling the first release liner from the first adhesive sheet; and Step C, irradiating a second laminate comprising a second substrate sheet, a second coating layer containing a second photocurable composition, and a second release liner sequentially with light to form a second adhesive sheet from the second coating layer; In Step C, the first release liner that has been peeled off in Step B is used as the second substrate sheet and / or the second release liner; and at least one of the group consisting of the first photocurable composition in Step A and the second photocurable composition in Step C contains an antioxidant. Regarding the second aspect of the present invention, for example, in the production method of the first aspect, in the step C, the first release liner that has been released in the step B is used as the second release liner. Regarding the third embodiment of the present invention, for example, the manufacturing method of the second embodiment further includes the following steps: Step D, peeling the second release liner from the aforementioned second adhesive sheet; and Step E, irradiating a third laminate comprising a third substrate sheet, a third coating layer containing a third photocurable composition, and a third release liner in sequence with light, thereby forming a third adhesive sheet from the aforementioned third coating layer; In the aforementioned Step E, the aforementioned second release liner that has been peeled off in the aforementioned Step D is used as the aforementioned third substrate sheet and / or the aforementioned third release liner, or the aforementioned first release liner that has been peeled off in the aforementioned Step B is used as the aforementioned third substrate sheet and / or the aforementioned third release liner. Regarding the fourth aspect of the present invention, for example, in the manufacturing method of the second or third aspect, the peeling force PS between the second release liner and the second adhesive sheet is 1 is 1.0N / 50mm or less. Regarding the fifth aspect of the present invention, for example, in the manufacturing method of any one of the first to fourth aspects, the peel force PS between the aforementioned first release liner and the aforementioned first adhesive sheet... 0 is 0.01N / 50mm or more. Regarding the sixth state sample of the present invention, for example, in the manufacturing method of any one of the first to fifth state samples, the aforementioned first photocurable component and the aforementioned second photocurable component each contain the aforementioned antioxidant. Regarding the seventh state sample of the present invention, for example, in the manufacturing method of any one of the first to sixth state samples, the aforementioned antioxidant comprises at least one selected from the group consisting of hindered phenolic compounds and hindered amine compounds. In an eighth aspect of the present invention, for example, in the production method of any one of the first to seventh aspects, the molecular weight of the antioxidant is 1500 or less. Regarding the ninth state sample of the present invention, for example, in the manufacturing method of any of the first to eighth state samples, the aforementioned first photocurable composition and the aforementioned second photocurable composition each comprise a monomer group containing (meth)acrylic acid monomers and / or a portion of the polymer of the aforementioned monomer group. Regarding the tenth aspect of the present invention, for example, in the production method of the ninth aspect, the monomer group includes a carboxyl group-containing monomer. The method for manufacturing the optical film of the adhesive sheet of the 11th embodiment of the present invention includes the following steps: forming the optical film of the adhesive sheet by depositing an optical film on the exposed surface of the adhesive sheet formed by the manufacturing method of any one of the 1st to 10th embodiments. Regarding the twelfth aspect of the present invention, for example, in the manufacturing method of the eleventh aspect, the optical film includes at least one film selected from the group consisting of a polarizing film and a retardation film. The present invention will be described in detail below. However, the present invention is not limited to the following embodiments and can be arbitrarily modified and implemented without departing from the spirit of the present invention. The inventors of this invention conceived of a way to further reduce the environmental impact of the adhesive sheet manufacturing process by reusing the release liner material that was previously discarded immediately after release. Based on this idea, they conducted research and completed this invention. [Method for Manufacturing Adhesive Sheet Embodiment] A method for manufacturing an adhesive sheet according to this embodiment will be described with reference to FIG1 . The manufacturing method according to this embodiment includes the following steps: Step A, irradiating a first laminate 10a comprising, in order, a first substrate sheet 11a, a first coating layer 12a containing a first photocurable composition, and a first release liner 13a with light 14 to form a first adhesive sheet 1a from the first coating layer 12a; Step B, peeling the first release liner 13a from the first adhesive sheet 1a; and Step C, irradiating a second laminate 10b comprising, in order, a second substrate sheet 11b, a second coating layer 12b containing a second photocurable composition, and a second release liner 13b with light 14 to form a second adhesive sheet 1b from the second coating layer 12b. In step C, the first release liner 13a, which has been peeled off in step B, is used as the second substrate sheet 11b and / or the second release liner 13b. In other words, the first release liner 13a, which has been peeled off from the first adhesive sheet 1a in step B, is reused in step C without being discarded. As described, the manufacturing method of this embodiment performs steps A to C without discarding the first release liner 13a, thereby enabling the manufacture of the adhesive sheet under low environmental impact. In step C, it is preferable to use the first release liner 13a, which has been peeled off in step B, as the second release liner 13b. Furthermore, "using the first peeling liner 13a that has been peeled off in step B as the second substrate sheet 11b and the second peeling liner 13b" specifically means using a portion of the plurality of first peeling liners 13a that have been peeled off in step B as the second substrate sheet 11b, and using the remaining portions as the second peeling liner 13b. At this time, at least one of the first peeling liner 13a used as the second substrate sheet 11b and the first peeling liner 13a used as the second peeling liner 13b may also undergo surface treatment or other modification treatments. The manufacturing method of this embodiment further includes step D, for example, peeling the second release liner 13b from the second adhesive sheet 1b. Furthermore, in the manufacturing method of this embodiment, the second release liner 13b, after the first release liner 13a has been reused, can be used as the third substrate sheet 11c and / or the third release liner 13c after being peeled off in step D, and step E, the same as step A, can be further performed. In other words, the reused release liner 13b can be used for a third time without being discarded. In step E, light is irradiated onto the third laminate 10c, which sequentially includes the third substrate sheet 11c, the third coating layer 12c containing the third photocurable composition, and the third release liner 13c, to form the third adhesive 1c from the third coating layer 12c. Furthermore, the first release liner 13a released in step B can be used as the third base sheet 11c and / or the third release liner 13c in step E. By repeatedly using the first release liner 13a as a release liner without discarding it, the adhesive sheet can be manufactured with a lower environmental load. In the manufacturing method of this embodiment, at least one of the components selected from the group consisting of the first photocurable component in step A and the second photocurable component in step C contains an antioxidant. As described later, an antioxidant is a component suitable for inhibiting the increase of peel force between the release liner and the adhesive sheet. In particular, the first photocurable component and the second photocurable component each preferably contain an antioxidant. The third photocurable component in step E may also contain an antioxidant. <Step A> In Step A, irradiation with light 14 is typically performed from the first substrate sheet 11a side. In this case, light 14 transmits through the first substrate sheet 11a and reaches the first coating layer 12a, curing the first coating layer 12a. However, irradiation with light 14 can be performed from the first release liner 13a side, or from both the first release liner 13a and the first substrate sheet 11a. Before the first release liner 13a is removed, the first adhesive sheet 1a formed in Step A is sandwiched between the first substrate sheet 11a and the first release liner 13a, forming part of the laminate 17a. (First photocurable composition) The first photocurable composition is an adhesive composition that forms the first adhesive sheet 1a from the first coating layer 12a by irradiating light 14. The first photocurable composition, for example, includes a monomer group containing a (meth)acrylic monomer and / or a partial polymer of the monomer group. The content of the (meth)acrylic component in the first photocurable composition, that is, the (meth)acrylic monomer and its partial polymer, can be 50% by weight or more, 60% by weight or more, 70% by weight or more, or even 80% by weight or more. In this case, an acrylic first adhesive sheet 1a containing a (meth)acrylic polymer and its cross-linked product as the main component can be formed. However, the first curable composition is not limited to the above examples. In this specification, (meth)acrylic acid means acrylic acid and methacrylic acid. (Meth)acrylate means acrylate and methacrylate. Examples of (meth)acrylic monomers include alkyl (meth)acrylates having an alkyl group with 1 to 20 carbon atoms in the side chain. The alkyl group may have 7 or fewer carbon atoms, 6 or fewer carbon atoms, 5 or fewer carbon atoms, or even 4 or fewer carbon atoms. The alkyl group may be linear or branched. Examples of alkyl (meth)acrylates include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, secondary butyl (meth)acrylate, tertiary butyl (meth)acrylate, isobutyl (meth)acrylate, n-pentyl (meth)acrylate, isopentyl (meth)acrylate, n-hexyl (meth)acrylate, isohexyl (meth)acrylate, isoheptyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, n-nonyl (meth)acrylate, isononyl (meth)acrylate, n-decyl (meth)acrylate, isodecyl (meth)acrylate, n-dodecyl (meth)acrylate (lauryl (meth)acrylate), n-tridecyl (meth)acrylate, n-tetradecyl (meth)acrylate, pentadecyl (meth)acrylate, hexadecyl (meth)acrylate, heptadecanyl (meth)acrylate, and octadecyl (meth)acrylate. The alkyl (meth)acrylate may also be n-butyl (meth)acrylate. The content of the alkyl (meth)acrylate in the monomer group may be, for example, 40% by weight or greater, or may be 50% by weight or greater, 60% by weight or greater, 70% by weight or greater, 80% by weight or greater, 85% by weight or greater, 90% by weight or greater, or even 95% by weight or greater. When calculating the content, the weight of the partial polymer is converted to the weight of each monomer before polymerization. The monomer group may also include a carboxyl group-containing monomer. The carboxyl group-containing monomer may be a (meth)acrylic acid monomer. In other words, the (meth)acrylic acid monomer may also include a carboxyl group-containing monomer. Examples of carboxyl group-containing monomers are (meth)acrylic acid, carboxyethyl (meth)acrylate, carboxypentyl (meth)acrylate, itaconic acid, maleic acid, fumaric acid, and crotonic acid. The content of the carboxyl group-containing monomer in the monomer group is, for example, 10% by weight or less, and may also be 9% by weight or less, 8% by weight or less, 7% by weight or less, 6% by weight or less, 5.5% by weight or less, or even 5% by weight or less. The lower limit of the content is, for example, 0.1% by weight or more, and may also be 0.5% by weight or more, or even 1% by weight or more. The monomer group may also not include a carboxyl group-containing monomer. The monomer group may also include a hydroxyl-containing monomer. The hydroxyl-containing monomer may be a (meth)acrylic monomer. In other words, the (meth)acrylic monomer may also include a hydroxyl-containing monomer. Hydroxyl-containing monomers can help improve the cohesive strength of the adhesive sheet. Examples of hydroxyl-containing monomers include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 8-hydroxyoctyl (meth)acrylate, 10-hydroxydecyl (meth)acrylate, 12-hydroxylauryl (meth)acrylate, and (4-hydroxymethylcyclohexyl) methacrylate. Preferred hydroxyl-containing monomers are 2-hydroxyethyl (meth)acrylate and 4-hydroxybutyl (meth)acrylate. The content of the hydroxyl-containing monomer in the monomer group may be, for example, 10% by weight or less, or may be 5% by weight or less, 4% by weight or less, 3% by weight or less, 2% by weight or less, 1% by weight or less, 0.8% by weight or less, 0.5% by weight or less, 0.3% by weight or less, 0.2% by weight or less, or even 0.1% by weight or less. The lower limit of the content may be, for example, 0.01% by weight or more, or 0.03% by weight or more, or even 0.05% by weight or more. The monomer group may also not contain a hydroxyl-containing monomer. The first photocurable composition may contain each of the aforementioned monomers as a partially polymerized form. The partially polymerized form may be either a single polymer or a copolymer. The partially polymerized form may contribute to the stable formation of the coating layer by appropriately increasing the viscosity of the first photocurable composition. The first photocurable composition generally contains a photopolymerization initiator. Examples of the photopolymerization initiator include a photoradical generator that generates radicals using visible light and / or ultraviolet light having a wavelength shorter than 450 nm. Examples of photopolymerization initiators include benzoin ethers such as benzoin methyl ether, benzoin isopropyl ether, and benzyl dimethyl ketal; substituted benzoin ethers such as anisole methyl ether; substituted acetophenones such as 2,2-diethoxyacetophenone and 2,2-dimethoxy-2-phenylacetophenone; α-hydroxyalkyl phenones such as 1-hydroxycyclohexyl-phenyl ketone; substituted α-ketone alcohols such as 2-methyl-2-hydroxypropiophenone; aromatic Sulfonyl chloride; photoactive oximes such as 1-phenyl-1,1-propanedione-2-(o-ethoxycarbonyl)-oxime; diphenyl ketone compounds such as diphenyl ketone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenyldiphenyl ketone, hydroxydiphenyl ketone, acrylated diphenyl ketone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3',4,4'-tetrakis(tertiary butylperoxycarbonyl)diphenyl ketone; 9-oxysulfur 2-Chloro-9-oxysulfur 2-Methyl-9-oxosulfur Isopropyl 9-Oxysulfur 2,4-Diisopropyl-9-oxosulfur , 2,4-diethyl 9-oxosulfuron 9-Oxosulfuronium The series of compounds includes: 2,4,6-trichloro-tris(trichloromethyl) ... - Tris(t) compounds, such as 2,4-trichloromethyl-(4'-methoxystyryl)-6-tris(t) compounds; oxime esters such as 1,2-octanedione, 1-[4-(phenylthio)-,2-(O-benzoyl oxime)], and O-(acetyl)-N-(1-phenyl-2-sideoxy-2-(4'-methoxy-naphthyl)ethylene)hydroxylamine; phosphine compounds such as bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 2,4,6-trimethylbenzoyldiphenylphosphine oxide; quinone compounds such as 9,10-phenanthroquinone, camphorquinone, and ethylanthraquinone; borate compounds; carbazole compounds; imidazole compounds; and diaceticotinamide compounds. The first photocurable component may also contain one or more photopolymerization initiators. The amount of the photopolymerization initiator in the first photocurable composition is, for example, 0.02 to 10 parts by weight, or 0.05 to 5 parts by weight, relative to 100 parts by weight of the total of the monomer group and the partially polymerized monomer group. As described above, the first photocurable component may further include an antioxidant. When the first photocurable component includes an antioxidant, in step C, when the first release liner 13a is used as the second release liner 13b, there is a tendency to adjust the peel force between the second release liner 13b and the second adhesive sheet 1b to a smaller value. Specifically, in step A, a chemical bond is formed between the first release liner 13a and the first adhesive sheet 1a by irradiation light 14, and some of the functional groups formed by the decomposition of the bond remain on the surface of the first release liner 13a even after the first adhesive sheet 1a is peeled off. There is a tendency for the peel force of the second release liner 13b (first release liner 13a) on the second adhesive sheet 1b to increase due to these functional groups. If an antioxidant is used, there is a tendency to suppress the formation of chemical bonds between the first release liner 13a and the first adhesive sheet 1a. Furthermore, the use of an antioxidant can suppress the tendency of the surface of the first release liner 13a to be contaminated by the material of the first adhesive sheet 1a regardless of the manufacturing conditions of the first adhesive sheet 1a (such as the light irradiation time). Antioxidants may include phenolic compounds (especially hindered phenolic compounds), amine compounds (especially hindered amine compounds), and phosphorus compounds. Antioxidants preferably contain at least one compound selected from the group consisting of hindered phenolic compounds and hindered amine compounds, with a particular preference for hindered phenolic compounds. The compounds contained in the antioxidant may also not contain sulfur atoms. The first photocurable component may also contain one or more antioxidants. Hindered phenolic compounds include, for example: butylated hydroxytoluene (BHT), neopentyl tert-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (BASF's "Irganox 1010"), octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (BASF's "Irganox 1076"), isooctyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (BASF's "Irganox 1135"), 3,3',3”,5,5',5”-hexa-tert-butyl-a,a',a”-(symmetric trimethylbenzene-2,4,6-tolyl)tri-p-cresol (BASF's "Irganox 1010"). 1330), 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-tris(2,4,6(1H,3H,5H)-trione ("Irganox 3114" manufactured by BASF), tris[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxyethyl]isocyanurate ("Irganox 3125" manufactured by BASF), pentaerythritol tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] ("ADK STAB" manufactured by ADEKA) AO-60), 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxyoxy]-1,1-dimethylethyl}-2,4,8,10-tetraspiro[5.5]undecane (ADEKA "ADK STAB AO-80"), 2-[1-(2-hydroxy-3,5-di-tert-pentylphenyl)ethyl]-4,6-di-tert-pentylphenyl ester (Sumitomo Chemical "Sumilizer GS"), 2-tert-butyl-4-methyl-6-(2-hydroxy-3-tert-butyl-5-methylbenzyl)phenyl ester (Sumitomo Chemical "Sumilizer") GM), 2,2'-dimethyl-2,2'-(2,4,8,10-tetraspiro[5.5]undecane-3,9-diyl)dipropane-1,1'-diyl-bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] (Sumitomo Chemical's "Sumilizer GA-80"), 1,3,5-tris(3-hydroxy-4-tert-butyl-2,6-dimethylbenzyl)-1,3,5-tris(2,4,6(1H,3H,5H)-trione) (SIETCH's "Cyanox 1790"), etc. Hindered phenolic compounds are preferably Irganox 1010 and Irganox 1135, with Irganox 1135 being more preferred. Hindered amine compounds include: bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate (BASF's "Tinuvin 123"), tetra(1,2,2,6,6-pentamethyl-4-piperidinyl)butane-1,2,3,4-tetracarboxylate (ADEKA's "ADK STAB LA-52"), tetra(2,2,6,6-tetramethyl-4-piperidinyl)butane-1,2,3,4-tetracarboxylate (ADEKA's "ADK STAB LA-57"), tetramethyl 1,2,3,4-butanetetracarboxylate, 1,2,2,6,6-pentamethyl-4-piperidinol, β,β,β',β'-tetramethyl-2,4,8,10-tetraspiro[5,5]undecane-3,9-diethanol (ADEKA's "ADK STAB") LA-63P), 1,2,3,4-butanetetracarboxylic acid tetramethyl ester, 2,2,6,6-pentamethyl-4-piperidinol, β,β,β',β'-tetramethyl-2,4,8,10-tetraspiro[5,5]undecane-3,9-diethanol (ADK STAB LA-68), bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate (ADK STAB LA-72), bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (ADK STAB LA-77Y), bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (ADK STAB LA-77Y). LA-77G), bis(1-undecyloxy-2,2,6,6-tetramethylpiperidin-4-yl) carbonate (ADK STAB LA-81 manufactured by ADEKA), 1,2,2,6,6-pentamethyl-4-piperidinyl methacrylate (ADK STAB LA-82 manufactured by ADEKA), 2,2,6,6-tetramethyl-4-piperidinyl methacrylate (ADK STAB... LA-87), SONGLIGHT 1190 (SONGWON), SONGLIGHT 1230 (SONGWON), bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate (SONGWON, "SONGLIGHT 2920"), bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (SONGWON, "SONGLIGHT 7700"), poly(4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol-n-1,4-butanedicarboxylic acid) (BASF, "Uvinul 5062H"), Uvinul 5050H (BASF), N,N'-bis(2,2,6,6,6-Tetramethyl-4-piperidinyl)-hexamethylenediamine (BASF's "Uvinul 4050H"), bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (BASF's "Uvinul 4077H"), etc. Hindered amine compounds are preferably ADK STAB LA-52. Phosphorus compounds include trioctyl phosphite, trilauryl phosphite, tridecyl phosphite, tridecyl phosphite, phenyl diisooctyl phosphite, phenyl diisodecyl phosphite, phenyl di(tridecyl) phosphite, diphenyl isooctyl phosphite, diphenyl isodecyl phosphite, diphenyl tridecyl phosphite, triphenyl phosphite, tris(nonylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite, tris(butoxyethyl) phosphite, tetra-tridecyl-4,4'-butylene phosphite Bis(3-methyl-6-tertiary butylphenol)-diphosphite, 4,4'-isopropylidene-diphenol alkyl phosphite (where the alkyl group has approximately 12-15 carbon atoms), 4,4'-isopropylidene bis(2-tertiary butylphenol)-di(nonylphenyl) phosphite, triphenyl phosphite, tetra(decayl)-1,1,3-triphenyl phosphite-2-methyl-5-tertiary butyl-4-hydroxyphenyl)butane diphosphite, triphenyl phosphite-3,5-di-tertiary butyl-4-hydroxyphenyl) phosphite, hydrogen 4,4'-Isopropylidene diphenol polyphosphite, bis(octylphenyl)-bis[4,4'-butylidene bis(3-methyl-6-tertiary butylphenol)]-1,6-hexanediol diphosphite, hexa-tetrazol-1,1,3-tris(2-methyl-4-hydroxy-5-tertiary butylphenol) diphosphite, tris(4,4'-isopropylidene bis(2-tertiary butylphenol)) phosphite, tris(1,3-distearate oxyisopropyl) phosphite, 9,10-dihydro-9-phosphaphenanthrene -10-oxide, tetrakis(2,4-di-tert-butylphenyl)-4,4'-biphenylene diphosphite, distearyl pentaerythritol diphosphite, bis(nonylphenyl) pentaerythritol diphosphite, phenyl・4,4'-isopropylidene diphenol・pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, phenylbisphenol-A-pentaerythritol diphosphite, etc. The antioxidant should have a small molecular weight. If an antioxidant with a small molecular weight is used, in step C, when the first release liner 13a is used as the second release liner 13b, it is easier to adjust the peel force between the second release liner 13b and the second adhesive sheet 1b to a smaller value. Furthermore, because the antioxidant has a small molecular weight, it should preferably be a liquid at room temperature (25°C). The molecular weight of the antioxidant can be, for example, 1500 or less, or 1000 or less, 800 or less, 500 or less, or even 400 or less. There is no particular limitation on the lower limit of the molecular weight of the antioxidant; for example, it can be 100 or more, or 200 or more, or even 300 or more. The amount of the antioxidant blended relative to 100 parts by weight of the total monomer group and its partially polymerized product is, for example, 0.01 parts by weight or more, and may also be 0.05 parts by weight or more, 0.1 parts by weight or more, or even 0.3 parts by weight or more. The upper limit of the amount of the antioxidant blended is, for example, 5 parts by weight or less, and may also be 3 parts by weight or less, 2 parts by weight or less, 1 part by weight or less, or even 0.5 parts by weight or less. The first photocurable component may also contain a crosslinking agent. Examples of crosslinking agents are polyfunctional monomers having two or more polymerizable functional groups per molecule. Polyfunctional monomers may also be (meth)acrylic acid monomers. Examples of polyfunctional monomers include monomers having two or more C=C bonds per molecule, and monomers having one or more C=C bonds and one or more epoxy, acrylonitrile, acezolinyl, hydrazine, hydroxymethyl, or other polymerizable functional groups per molecule. Polyfunctional monomers are preferably monomers having two or more C=C bonds per molecule. Examples of crosslinking agents include: polyethylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, neopentyl tert-methacrylate, neopentyl tert-methacrylate, dinepentyl tert-hexamethacrylate, 1,2-ethylene glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, 1,9-nonanediol diacrylate (NDDA), 1,12-dodecanediol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, tetramethylolmethane tri(meth)acrylate, and other polyfunctional acrylates (ester compounds of polyols and (meth)acrylates, etc.); allyl methacrylate, ethylene methacrylate, divinylbenzene, epoxy acrylate, polyester acrylate, carbamate acrylate, di(meth)acrylate, and di(meth)acrylate. The multifunctional monomer is preferably a multifunctional acrylate, more preferably trimethylolpropane tri(meth)acrylate, hexanediol di(meth)acrylate, or dipentatriol hexa(meth)acrylate. The amount of crosslinking agent to be added varies depending on the molecular weight and number of functional groups, but is, for example, 5 parts by weight or less, 3 parts by weight or less, 2 parts by weight or less, 1 part by weight or less, or even 0.5 parts by weight or less, relative to 100 parts by weight of the total monomer group and its partial polymer. The lower limit of the amount to be added is, for example, 0.01 parts by weight or more, and even 0.05 parts by weight or more. The first photocurable composition may also contain additives other than those mentioned above. Examples of the additives include chain transfer agents, silane coupling agents, viscosity modifiers, tackifiers, plasticizers, softeners, antioxidants, fillers, colorants, surfactants, antistatic agents, and ultraviolet absorbers. The solvent content in the first photocurable composition is, for example, 5% by weight or less, and may also be 4% by weight or less, 3% by weight or less, 2% by weight or less, 1% by weight or less, or even 0.5% by weight or less. The first photocurable composition may be substantially free of solvent. "Substantially free of solvent" means that a solvent derived from additives, etc., may be allowed to exist at a content of, for example, 0.1% by weight or less, preferably 0.05% by weight or less, and more preferably 0.01% by weight or less. The viscosity of the first photocurable component is preferably 5 to 100 poise. A first photocurable component with a viscosity in the above range is particularly suitable for forming the first coating layer 12a. (First Release Liner) An example of the base material of the first release liner 13a (hereinafter referred to as "base material") is a resin film. Examples of resins that may be contained in the base material include polyesters such as polyethylene terephthalate and polyethylene naphthalate, acetate resins, polyether sulfones, polycarbonates, polyamides, polyimides, polyolefins, (meth)acrylic resins, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl alcohol, polyarylates, and polyphenylene sulfide. The resin is preferably a polyester such as polyethylene terephthalate. The first release liner 13a may have the transmissivity of the light 14 irradiated in step A, or it may have the same degree of transmissivity of the light 14 as the first substrate sheet 11a. The thickness of the first stripping liner 13a is, for example, 10~200µm, or 25~150µm. The first release liner 13a may also include layers other than a liner substrate. The first release liner 13a may also include a release layer. The first release liner 13a in Figure 2 includes a liner substrate 131 and a release layer 132 formed on one surface of the liner substrate 131. The first release liner 13a in Figure 2 can be used with the release layer 132 on the first coating layer 12a side. The release layer 132 is typically a hardened layer containing a release agent composition. Various release agents can be used, such as polysiloxane-based release agents, fluorine-based release agents, long-chain alkyl-based release agents, fatty acid amide-based release agents, and silicone powder. The first release liner 13a may also have a hardened layer containing a polysiloxane-based release agent as the main component (hereinafter referred to as the "polysiloxane release layer"). The polysiloxane release layer is particularly suitable for balancing adhesion and peelability to the first adhesive sheet 1a. Furthermore, in this specification, the main component refers to the component with the highest content. Polysiloxane-based release agents include various types of curable polysiloxane materials, such as addition-reaction type, condensation-reaction type, UV-curing type, electron beam curing type, and solvent-free type, with addition-reaction-curing polysiloxane materials being preferable. Addition-reaction-curing polysiloxane materials are particularly suitable for forming a release layer that balances adhesion and peelability to the first adhesive sheet 1a. Curable polysiloxane materials can also be polysiloxane-modified resins that have incorporated reactive polysiloxanes into organic resins such as terephthalates, epoxy resins, and alkyd resins through graft polymerization or other methods. Examples of addition-curable polysiloxanes are polyorganosiloxanes containing vinyl or alkenyl groups within the molecule. Addition-curable polysiloxanes may also lack hydrosilyl groups. Examples of alkenyl groups include: 3-butenyl, 4-pentenyl, 5-hexenyl, 6-heptenyl, 7-octenyl, 8-nonenyl, 9-decenyl, 10-undecenyl, and 11-dodecenyl. Examples of polyorganosiloxanes include: polydimethylsiloxane, polydiethylsiloxane, and polymethylethylsiloxane, as well as polyalkylalkylsiloxanes, polyalkylarylsiloxanes, and copolymers of multiple monomers containing Si atoms, such as poly(dimethylsiloxane-diethylsiloxane). Polyorganosiloxanes are preferably polydimethylsiloxanes. Release agent compositions containing polysiloxane-based release agents as the main component (hereinafter referred to as "polysiloxane release agent compositions") typically contain crosslinking agents. Examples of crosslinking agents are polyorganosiloxanes with hydrogen silicone groups. Crosslinking agents may also have more than two hydrogen silicone groups per molecule. Polysiloxane release agent compositions may also contain a curing catalyst. Examples of curing catalysts are platinum-based catalysts. Examples of platinum-based catalysts include platinum chloride, platinum olefin complexes, and platinum chloride olefin complexes. The amount of platinum-based catalyst used relative to the total solids content of the composition is, for example, 10 to 1000 ppm (by weight, converted to platinum). The silicone release agent composition may also contain additives. Examples of additives include release control agents and adhesion promoters. Examples of release control agents include unreacted silicone resins, more specifically organosiloxanes such as octamethylcyclotetrasiloxane, and MQ resins. The total amount of release control agents and adhesion promoters used is, for example, 1 to 30% by weight relative to the total solids content of the composition. Other examples of additives include fillers, antistatic agents, antioxidants, UV absorbers, plasticizers, and colorants. The total amount of other additives used is, for example, 10% by weight or less relative to the total solids content of the composition. The silicone release agent composition may also contain an organic solvent. Examples of organic solvents include hydrocarbon solvents such as cyclohexane, n-hexane, and n-heptane; aromatic solvents such as toluene and xylene; ester solvents such as ethyl acetate and methyl acetate; ketone solvents such as acetone and methyl ethyl ketone; and alcohol solvents such as methanol, ethanol, and butanol. Two or more organic solvents may also be included. The amount of organic solvent used is preferably 80-99.9% by weight of the silicone release agent composition. The release layer 132 can be formed, for example, by heating and drying a coating film containing a release agent composition formed on the lining substrate 131. The release agent composition can be applied using various coating methods, including roll coating, contact roll coating, gravure coating, reverse coating, roller brushing, spraying, dip roll coating, rod coating, blade coating, air knife coating, curtain coating, lip coating, and die coating. Heating and drying can be performed using, for example, hot air drying. The heating temperature and time vary depending on the heat resistance of the lining substrate, but are typically 80-150°C and approximately 10 seconds to 10 minutes. Irradiation with active energy rays, such as ultraviolet rays, may also be used as needed. The thickness of the release layer 132 is, for example, 10 to 300 nm. The upper limit of the thickness may be 200 nm or less, 150 nm or less, 120 nm or less, 110 nm or less, 100 nm or less, less than 100 nm, 90 nm or less, 80 nm or less, 70 nm or less, less than 70 nm, or even less than 65 nm. The lower limit of the thickness may be 15 nm or more, 20 nm or more, 25 nm or more, 30 nm or more, 35 nm or more, 40 nm or more, 45 nm or more, or even more than 50 nm. The thickness of the release layer 132 may also be 110 nm or less. In other words, the first release liner 13a has the release layer 132 on the first coating layer 12a side, and the thickness of the release layer 132 may also be 110 nm or less. The first stripping lining material 13a can be a single sheet or a strip. The peel force PS between the first peel liner 13a, especially the first peel liner 13a in its unused state, and the first adhesive sheet 1a. 0 has no particular limitation; for example, it can be 1.0N / 50mm or less, or it can be 0.5N / 50mm or less, 0.2N / 50mm or less, 0.15N / 50mm or less, 0.12N / 50mm or less, 0.1N / 50mm or less, 0.08N / 50mm or less, or even 0.05N / 50mm or less. Peel strength PS 0 may be 0.01 N / 50 mm or more, may be 0.02 N / 50 mm or more, and may be 0.03 N / 50 mm or more. Peel strength PS Evaluation can be performed as follows: The laminate 17a formed in step A is cut into 50 mm wide test pieces to prepare test pieces. A 180° peel test is then performed by peeling only the first release liner 13a from the prepared test piece. The peel test is performed approximately 0.5 to 1 hour after the formation of the first adhesive sheet 1a. From the formation of the first adhesive sheet 1a until the peel test, the laminate 17a and the test piece are placed in an atmosphere of 23°C ± 5°C. The peeling speed for the peel test is set at 300 mm / minute, and the test temperature is set at 23°C ± 5°C. If the width of the laminate 17a is less than 50 mm, the measured value at the original width can be converted to a value equivalent to a 50 mm width. If the formation direction of the first coating layer 12a can be determined, the width direction of the test piece can be defined as the TD direction, which is perpendicular to the MD direction. When the first base sheet 11a and the first release liner 13a are in a long strip shape, the width direction thereof can be set as the width direction of the test piece. (First substrate sheet) An example of the first substrate sheet 11a is a resin film. An example of the resin contained in the first substrate sheet 11a is the same as an example of the resin that may be contained in the liner substrate. The first base sheet 11a preferably has excellent transmittance to the light 14 irradiated in step A. The thickness of the first base sheet 11 a is, for example, 10 to 200 μm, or 25 to 150 μm. The first substrate sheet 11a may also include a release layer on the surface facing the first coating layer 12a. Examples of release layers that may be included on the first substrate sheet 11a and their methods of production are the same as those for the first release liner 13a and their methods of production. Both the first release liner 13a and the first substrate sheet 11a may include release layers. In this case, both release layers may be formed from a release agent composition containing the same release agent as a main component. Furthermore, the thickness of the two release layers may differ; for example, the release layer included on the first substrate sheet 11a may be thicker. The first base sheet 11 a is generally selected to have a greater release force from the first adhesive sheet 1 a than the first release liner 13 a . The first base sheet 11 a may be in a single sheet form or in a long strip form. (First Laminated Body and Its Formation) The first laminate 10a may include layers other than the first substrate sheet 11a, the first coating layer 12a, and the first release liner 13a. These other layers may be disposed on the side of the first substrate sheet 11a and / or the first release liner 13a opposite the first coating layer 12a. The first coating layer 12a is preferably in contact with the first substrate sheet 11a and the first release liner 13a. The first laminate 10a can be formed, for example, by forming a first coating layer 12a on a first substrate sheet 11a (or a first release liner 13a), and placing a first release liner 13a (or a first substrate sheet 11a) on the formed first coating layer 12a. Alternatively, a photocurable component can be flowed into the space formed between the first substrate sheet 11a and the first release liner 13a, which are spaced at a predetermined interval with their main surfaces facing each other, to form the first laminate 10a. In step C, the first release liner 13a after peeling can also be used in such a way that the surface of the first coating layer 12a, for example, the surface of the release layer 132, located in step A before peeling is located on the side of the second coating layer 12b. The first coating layer 12a can be formed by various coating methods such as roll coating, contact roll coating, gravure coating, reverse coating, roller brush, spray coating, dip roll coating, rod coating, doctor blade coating, air knife coating, curtain coating, lip coating, and die coating. The thickness of the first coating layer 12a can be adjusted according to the desired thickness of the first adhesive sheet 1a, for example, 5~100µm, or 5~50µm, 5~25µm, or even 5~20µm. The first laminate 10a may also include a long first substrate sheet 11a, a long first coating layer 12a, and a long first release liner 13a. In other words, it may also be in a long strip shape. The long first laminate 10a can be obtained, for example, by forming the first coating layer 12a between the first substrate sheet 11a and the first release liner 13a, which have been unwound from a roll, while feeding them. (Light Irradiation) The light 14 irradiating the first laminate 10a is, for example, visible light or ultraviolet light having a wavelength shorter than 450 nm. The light 14 may also include light having a wavelength in the same region as the absorption wavelength of the photopolymerization initiator contained in the first photocurable composition. Alternatively, the light 14 may be short-wavelength light having a cutoff wavelength of 300 nm or less, which is suitable for suppressing degradation of the first substrate sheet 11a caused by the light 14, by passing through an optical filter or the like. The light source of the light 14 is, for example, a light irradiation device including an ultraviolet lamp. Examples of ultraviolet lamps include ultraviolet LEDs, low-pressure mercury lamps, medium-pressure mercury lamps, high-pressure mercury lamps, ultrahigh-pressure mercury lamps, metal halide lamps, xenon lamps, microwave-excited mercury lamps, blacklight lamps, chemical lamps, germicidal lamps, low-pressure discharge mercury lamps, and excimer lasers. Two or more ultraviolet lamps may also be used in combination. The irradiation of the light 14 may be continuous or intermittent. The illumination of the light 14 is, for example, 1-20 mW / cm 2 The irradiation time of the light 14 is, for example, 5 minutes to 5 hours. The cumulative light intensity of the light 14 on the first layered body 10a is, for example, 100 to 5000 mJ / cm 2 . (First Adhesive Sheet) The polymerization rate of the monomer group of the first adhesive sheet 1a formed of the first photocurable composition is preferably 90% or higher. The polymerization rate may be 95% or higher, 98% or higher, or even 99% or higher. The gel fraction of the first adhesive sheet 1 a is, for example, 50% or more, or may be 75% or more, 80% or more, or even 85% or more. The latent variable of the first adhesive sheet 1a is, for example, 180 μm or less, or 160 μm or less. The lower limit of the latent variable is, for example, 5 μm or more, or 10 μm or more. The latent variable of the first adhesive sheet 1a can be evaluated as follows (refer to Figures 3A and 3B). First, the laminate of the first adhesive sheet 1a and the support film 51 is cut into short strips of 10mm × 50mm to form a test piece 52. The purpose of the support film 51 is to suppress the deformation of the load-bearing portion of the first adhesive sheet 1a under load during the test, so as to more accurately measure the latent variable. For the support film 51, a resin film such as polyethylene terephthalate (PET) film can be used. The support film 51 can be an optical film or a laminate containing an optical film. The thickness of the support film 51 should be such that it will not deform under the aforementioned load, for example, 20~200µm. Next, as shown in Figures 3A and 3B, the test piece 52 is attached to the surface of the stainless steel test plate 53 with the first adhesive sheet 1a at a joint surface of 10mm long × 10mm wide. Furthermore, Figure 3B is a cross-section BB of Figure 3A. The attachment of the test piece 52 to the test plate 53 is carried out in a manner that prevents air bubbles from being introduced between the test plate 53 and the first adhesive piece 1a. After attachment, the plate is placed in an autoclave at 50°C and 5 atm (absolute pressure) for 15 minutes to homogenize the bond between the test plate 53 and the first adhesive piece 1a. Next, the test plate 53 and the test piece 52 are held vertically with the test plate 53 positioned above, and placed in a gas environment at 25°C for at least 5 minutes. With the test plate 53 fixed, a 500g weight is fixed to the center of the lower end of the test piece 52, and a vertically downward load 54 of 500gf is added. The latent displacement (offset) of the first adhesive piece 1a relative to the test plate 53 is measured at a time point 3600 seconds after the start of the load 54 increase, which is taken as the amount of weight drop. A laser displacement meter can be used to measure the amount of weight drop. The thickness of the first adhesive sheet 1a is, for example, 2~70µm, or 2~50µm, 5~40µm, 10~30µm, 10~25µm, or even 10~20µm. <Step B> In Step B, the first release liner 13a is peeled off from the hardened laminate 17a. The laminate 17a sequentially comprises a first substrate sheet 11a, a first adhesive sheet 1a, and a first release liner 13a. Through the above peeling, the first release liner 13a and the laminate 15a comprising the first substrate sheet 11a and the first adhesive sheet 1a can be obtained. The peel force between the first release liner 13a and the first adhesive sheet 1a may, for example, be less than the peel force between the first substrate sheet 11a and the first adhesive sheet 1a. The peel force between the first substrate sheet 11a and the first adhesive sheet 1a may be, for example, 0.1~10N / 50mm, or 1~8N / 50mm, 2~7N / 50mm, or even 3~5N / 50mm. The first stripped lining material 13a can also be used in step C after being wound into a coil. <Step C> In step C, the irradiation of light 14 is typically performed from the side of the second substrate sheet 11b. At this time, light 14 will pass through the second substrate sheet 11b to reach the second coating layer 12b, causing the second coating layer 12b to harden. However, the irradiation of light 14 can be performed from the side of the second release liner 13b, or from both sides of the second release liner 13b and the second substrate sheet 11b. Before the second release liner 13b is peeled off, the second adhesive sheet 1b formed in step C is sandwiched between the second substrate sheet 11b and the second release liner 13b to form part of the laminate 17b. (Second Photocurable Composition) The second photocurable composition is an adhesive composition that forms the second adhesive sheet 1b from the second coating layer 12b by irradiation with light 14. The material of the second photocurable composition can be used as described above with respect to the first photocurable composition. That is, the second photocurable composition may, for example, contain a monomer phase containing (meth)acrylate monomers and / or a portion of the polymer of that monomer group, and a photopolymerization initiator, and may further contain an antioxidant if desired. The second photocurable composition may also further contain a crosslinking agent or other additives. The composition of the second photocurable composition may be the same as or different from that of the first photocurable composition. For example, both the first and second photocurable compositions may preferably contain a monomer group containing (meth)acrylate monomers and / or a portion of the polymer of that monomer group. Also, as mentioned above, both the first and second photocurable compositions may preferably contain an antioxidant. As described above, the second photocurable component may further contain an antioxidant. Similar to the first photocurable component, when the second photocurable component contains an antioxidant, when the second release liner 13b is used as the third release liner 13c to perform step E, there is a tendency to adjust the peel force between the third release liner 13c and the third adhesive sheet 1c to a smaller value. Furthermore, by using an antioxidant, regardless of the manufacturing conditions of the second adhesive sheet 1b (such as the time of light irradiation), there is a tendency to suppress the surface of the second release liner 13b from being contaminated by the material of the second adhesive sheet 1b. Similar to the first photocurable composition, the solvent content in the second photocurable composition may be, for example, 5 wt% or less, or may be 4 wt% or less, 3 wt% or less, 2 wt% or less, 1 wt% or less, or even 0.5 wt% or less. The second photocurable composition may also be substantially solvent-free. The viscosity of the second photocurable composition is preferably 5 to 100 poise. The second photocurable composition having a viscosity within the above range is particularly suitable for forming the second coating layer 12b. (Second Release Liner) The second release liner 13b can be the same as that described above for the first release liner 13a. The second release liner 13b may be the first release liner 13a itself that has been peeled off from the first adhesive sheet 1a in step B. The peeling force PS between the second release liner 13b, especially the first release liner 13a peeled from the first adhesive sheet 1a in step B, and the second adhesive sheet 1b The peel strength should ideally be below 1.0 N / 50 mm, but can also be below 0.9 N / 50 mm, 0.8 N / 50 mm, 0.7 N / 50 mm, 0.6 N / 50 mm, 0.5 N / 50 mm, 0.4 N / 50 mm, 0.3 N / 50 mm, 0.2 N / 50 mm, or even below 0.15 N / 50 mm. (PS peel strength) The lower limit of 1 is, for example, 0.01 N / 50 mm or more, and may be 0.03 N / 50 mm or more, 0.05 N / 50 mm or more, 0.08 N / 50 mm or more, or even 0.1 N / 50 mm or more. The above peeling force PS 1 Relative peel force PS 0 PS 1 / PS 0 can be less than 10, or less than 8, less than 6, or less than 5. 1 / PS The lower limit of 0 is, for example, 1.1 or above, or 2.0 or above. (Second Substrate Sheet) The second substrate sheet 11b can be used as described above with respect to the first substrate sheet 11a. The second substrate sheet 11b can also be the first release liner 13a that has been peeled off from the first adhesive sheet 1a in step B. (Second laminate and its formation) The second laminate 10b may also include layers other than the second substrate sheet 11b, the second coating layer 12b, and the second release liner 13b. These other layers may also be disposed on the side of the second substrate sheet 11b and / or the second release liner 13b opposite to the side of the second coating layer 12b. The second coating layer 12b is preferably in contact with the second substrate sheet 11b and the second release liner 13b. The second layered body 10b can be formed by the method described above for the first layered body 10a. The second laminate 10b may also include a strip-shaped second substrate sheet 11b, a strip-shaped second coating layer 12b, and a strip-shaped second release liner 13b; in other words, it may also be strip-shaped. The strip-shaped second laminate 10b can be obtained, for example, by forming the second coating layer 12b between the second substrate sheet 11b and the second release liner 13b while conveying them from the winding body. (Irradiation with Light) The light 14 irradiated onto the second layered body 10 b and the irradiation conditions of the light 14 can be the same as those described in step A above. (Second Adhesive Sheet) The polymerization rate of the monomer group of the second adhesive sheet 1b formed of the second photocurable composition is preferably 90% or higher. The polymerization rate may be 95% or higher, 98% or higher, or even 99% or higher. The gel fraction of the second adhesive sheet 1 b is, for example, 50% or more, and may be 75% or more, 80% or more, or even 85% or more. The latent variable of the second adhesive sheet 1b is, for example, 180 μm or less, or 160 μm or less. The lower limit of the latent variable is, for example, 5 μm or more, or 10 μm or more. The thickness of the second adhesive sheet 1b is, for example, 2~70µm, or 2~50µm, 5~40µm, 10~30µm, 10~25µm, or even 10~20µm. <Step D> In Step D, the second release liner 13b is peeled from the cured laminate 17b. Laminate 17b comprises, in this order, a second base sheet 11b, a second adhesive sheet 1b, and a second release liner 13b. This peeling process yields the second release liner 13b and a laminate 15b comprising the second base sheet 11b and the second adhesive sheet 1b. The peel force between the second release liner 13b and the second adhesive sheet 1b may be smaller than the peel force between the second base sheet 11b and the second adhesive sheet 1b. The peel force between the second base sheet 11b and the second adhesive sheet 1b may be, for example, 0.1-10 N / 50 mm, 1-8 N / 50 mm, 2-7 N / 50 mm, or even 3-5 N / 50 mm. The peeled second release liner 13b can be used in step E after being wound into a roll. <Step E> Step E can be performed under the same methods and conditions as Step A. Specifically, the third release liner 13c, the third photocurable composition, the third adhesive sheet 1c, and the third substrate sheet 11c can each be used as the liner, composition, or sheet described for the first release liner 13a, the first photocurable composition, the first adhesive sheet 1a, and the first substrate sheet 11a. As described above, in Step D, the second release liner 13b, which has been peeled from the second adhesive sheet 1b, can be used, for example, as the third substrate sheet 11c and / or the third release liner 13c. In other words, at least one of the third release liner 13c and the third substrate sheet 11c is the second release liner 13b itself, which has been peeled from the second adhesive sheet 1b in Step D. Furthermore, in step B, the first release liner 13a that has been peeled off from the first adhesive sheet 1a may be used as the third base sheet 11c and / or the third release liner 13c. In other words, at least one of the third release liner 13c and the third base sheet 11c may be the first release liner 13a itself that has been peeled off from the first adhesive sheet 1a in step B. Next, another example of a method for manufacturing an adhesive sheet will be described with reference to FIG4 . In this example, a first coating layer 12a of a first photocurable composition is formed on one surface of a first elongated substrate sheet 11a unwound from a roll 31 by a coating device 32 . Next, a first elongated release liner 13a unwound from a roll 33 is placed on the first coating layer 12a to form a first elongated laminate 10a. Next, a light irradiation device 34 irradiates the first laminate 10a with light 14 to form a first elongated adhesive sheet 1a. Next, the first release liner 13a is peeled from the laminate 17a containing the first adhesive sheet 1a and wound onto a roll 35 . The above steps are performed while the first substrate sheet 11a and the first release liner 13a are conveyed. Thus, Steps A and B described above are performed. The wound first release liner 13a is reused in step C. Steps C and D can also be performed in the same manner as in Figure 4. The method in Figure 4 is particularly suitable for mass production of adhesive sheets. Another example of a method for manufacturing an adhesive sheet is described with reference to FIG5 . In this example, the first release liner 13a that has been peeled off from the laminate 17a is not wound onto a roll 35 and is used to manufacture the second adhesive sheet 1b. The second adhesive sheet 1b is manufactured by the same method as the first adhesive sheet 1a. Except for the above, the example of FIG5 is the same as the example of FIG4 . The method of FIG5 is particularly suitable for mass production of adhesive sheets. In addition, in FIG5 , the first release liner 13a that has been peeled off from the laminate 17a is used as the second release liner 13b. However, as mentioned above, the first release liner 13a can also be used as the second substrate sheet 11b. [Method for Manufacturing an Optical Film with Adhesive Sheet] An example of a method for manufacturing an optical film with an adhesive sheet according to this embodiment will be described with reference to FIG6 . The following example describes a method for manufacturing an optical film with an adhesive sheet using a first adhesive sheet 1a. However, a second adhesive sheet 1b or a third adhesive sheet 1c may be used in place of the first adhesive sheet 1a. In the example of Figure 6, the first release liner 13a is peeled off from a laminate 17a comprising, in sequence, a first substrate sheet 11a, a first adhesive sheet 1a, and a first release liner 13a, and an optical film 2 is arranged on the exposed surface 18 of the first adhesive sheet 1a thus formed, thereby forming an optical film 21 with an adhesive sheet. The optical film 21 with an adhesive sheet comprises, in sequence, a first substrate sheet 11a, a first adhesive sheet 1a, and an optical film 2. The laminate 17a can be formed by the above-mentioned step A. The peeling of the first release liner 13a can also be carried out in the manner of the above-mentioned step B. The optical film 21 with an adhesive sheet can be used in an image display device, etc., directly or after peeling off the first substrate sheet 11a, in the form of an optical laminate comprising, for example, the first adhesive sheet 1a and the optical film 2. The optical laminate can also be attached to an object (for example, an image forming panel) through the first adhesive sheet 1a. However, the use of the adhesive sheet-attached optical film 21 is not limited to the above example. Alternatively, an optical film or other component may be placed on the exposed surface 18 formed by peeling the first base sheet 11a from the adhesive sheet-attached optical film 21. For example, an adhesive sheet-attached optical film 22 may be formed that includes, in order, the optical film 2A, the first adhesive sheet 1a, and the optical film 2B (see FIG. 7 ). The optical films 2A and 2B may be the same or different. The optical film 2 may be disposed directly or indirectly on the exposed surface 18. In other words, the optical film 2 may be disposed in contact with the exposed surface 18 or may be disposed with another layer interposed therebetween. Another example of a method for manufacturing an optical film with an adhesive sheet according to this embodiment will be described with reference to FIG8 . In this example, a long strip of optical film 2 is placed on the exposed surface 18 of the first adhesive sheet 1a of the laminate 15a formed by the method of FIG4 , thereby forming a long strip of optical film with an adhesive sheet 21. The optical film 2 is unwound from the roll 36 and placed on the exposed surface 18. As shown in FIG8 , the formation of the first adhesive sheet 1a and the formation of the optical film with an adhesive sheet 21 can also be performed continuously. The method of FIG8 is particularly suitable for mass production of the optical film with an adhesive sheet 21. The optical film 2 may be, for example, a film comprising at least one selected from the group consisting of a polarizing film and a retardation film. Alternatively, the optical film 2 may be a laminated film comprising a polarizing film and / or a retardation film. Alternatively, the optical film 2 may comprise a glass film. However, the optical film 2 is not limited to the above examples. Polarizing film includes a polarizer. Typically, a polarizing film includes a polarizer and a protective film (transparent protective film). The protective film is, for example, positioned in contact with the main surface (the surface with the widest area) of the polarizer. The polarizer can also be positioned between two protective films. The protective film can also be positioned on at least one side of the polarizer. There are no particular limitations on polarizing elements. Examples include hydrophilic polymer films such as polyvinyl alcohol (PVA) films, partially formalized PVA films, and partially saponified ethylene-vinyl acetate copolymer films, which are obtained by adsorbing dichroic substances such as iodine and dichroic dyes and then uniaxially extending them; and polyene-based oriented films such as dehydrated PVA products and dehydrochlorinated polyvinyl chloride products. Typically, polarizing elements are composed of PVA films (including partially saponified ethylene-vinyl acetate copolymer films) and dichroic substances such as iodine. There is no particular limitation on the thickness of the polarizing element; for example, it can be less than 80µm, or less than 50µm, 30µm, or 25µm, or even less than 20µm. There is no particular limitation on the lower limit of the thickness of the polarizing element; for example, it can be more than 1µm, or more than 5µm, 10µm, or even more than 15µm. Dimensional variations in thin polarizing elements (e.g., less than 20µm thick) are suppressed, which helps improve the durability of optical laminates, especially their durability at high temperatures. The protective film can be made of thermoplastic resins with excellent properties such as transparency, mechanical strength, thermal stability, moisture barrier properties, and isotropy. Specific examples of such thermoplastic resins include: cellulose resins such as cellulose triacetate, polyester resins, polyether resins, polyether resins, polyether resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, (meth)acrylic resins, cyclic polyolefin resins (norphine-based resins), polyarylate resins, polystyrene resins, polyvinyl alcohol resins, and mixtures thereof. The protective film material can also be thermosetting resins or UV-curing resins such as (meth)acrylic, carbamate, acrylate, epoxy, and polysiloxane-based resins. When the polarizing film has two protective films, the materials of the two protective films can be the same or different. For example, a protective film made of thermoplastic resin can be bonded to one main surface of the polarizing element through an adhesive, and a protective film made of thermosetting resin or UV-curing resin can be bonded to the other main surface of the polarizing element. The protective film may also contain one or more additives. Examples of additives include UV absorbers, antioxidants, lubricants, plasticizers, mold release agents, anti-coloring agents, flame retardants, nucleating agents, antistatic agents, pigments, and colorants. The thickness of the protective film can be determined appropriately, but it is generally around 10~200μm, depending on factors such as strength, operability, and film properties. The polarizer and protective film are typically bonded using a water-based adhesive. Examples of water-based adhesives include isocyanate adhesives, polyvinyl alcohol adhesives, gelatin adhesives, vinyl latex, water-based polyurethanes, and water-based polyesters. Other adhesives besides the above include UV-curable adhesives and electron beam-curable adhesives. Electron beam-curable adhesives for polarizing plates exhibit suitable adhesion to various protective films. Adhesives may also contain metal compound fillers. In polarizing films, phase retardation films or the like can be formed on the polarizing element to replace the protective film. Other protective films, phase retardation films, etc., can also be further formed on the protective film. Regarding the protective film, a hard coating can be provided on the surface opposite to the surface that is in contact with the polarizer, or it can be treated to prevent reflection, sticking, diffusion, glare, etc. Polarizing films can also be circularly polarized films. Phase refraction films can be obtained by stretching polymer films or by aligning and immobilizing liquid crystal materials. For example, phase refraction films may exhibit birefringence in the in-plane and / or thickness direction. Phase difference films include: anti-reflection phase difference films (refer to Japanese Patent Laid-Open No. 2012-133303
[0221] ,
[0222] ,
[0228] ), viewing angle compensation phase difference films (refer to Japanese Patent Laid-Open No. 2012-133303
[0225] ,
[0226] ), and tilted orientation phase difference films for viewing angle compensation (refer to Japanese Patent Laid-Open No. 2012-133303
[0227] ). There are no particular restrictions on the specific composition of the phase retardation film, such as the phase difference value, the configuration angle, the 3D birefringence, and whether it is a single layer or multiple layers; known phase retardation films can be used. The thickness of the phase retardation film should preferably be less than 20µm, more preferably less than 10µm, even more preferably 1~9µm, and especially preferably 3~8µm. The phase retardation film may also include, for example, a 1 / 4 wavelength plate and / or a 1 / 2 wavelength plate in which liquid crystal material has been oriented and immobilized. An image display device can also be formed using the optical film with an adhesive sheet formed by the above-mentioned method. The image display device can be formed, for example, by joining the optical films 21 and 22 with an adhesive sheet to an image display panel. The joining can also be performed by the first adhesive sheet 1a. The image display device can be an organic EL display or a liquid crystal display. However, the image display device is not limited to the above examples. The image display device can also be an electroluminescent (EL) display, a plasma display (PD), a field emission display (FED: Field Emission Display), etc. The image display device can be used for home appliances, in-vehicle applications, public information displays (PID), etc. The present invention will be further described in detail below by way of examples. The present invention is not limited to the examples shown below. (Example 1) [Preparation of Release Liner A] 30 parts by weight of addition-reaction-curing polysiloxane (LTC761 containing hexenyl-containing polyorganosiloxane, 30% by weight toluene solution, manufactured by Dow Corning Toray Co., Ltd.), 0.9 parts by weight of release control agent (BY24-850 containing unreacted polysiloxane resin, manufactured by Dow Corning Toray Co., Ltd.), 2 parts by weight of curing catalyst (SRX212 containing platinum catalyst, manufactured by Dow Corning Toray Co., Ltd.), and a toluene / hexane mixed solvent (volume ratio 1:1) as a diluent were mixed to obtain polysiloxane-based mold release agent composition A. The concentration of polysiloxane solids in mold release agent composition A is 1.0% by weight. Next, using a wire rod, release agent composition A is coated onto one side of the substrate (polyester film Lumirror XD500P, 75µm thick), and heated at 130°C for 1 minute to produce a release liner A with a release layer (60nm thick) on one side. [Preparation of Photocurable Component A] 95.1 parts by weight of n-butyl acrylate (BA), 4.8 parts by weight of acrylic acid (AA), 0.1 parts by weight of 4-hydroxybutyl acrylate (HBA), 0.05 parts by weight of 2,2-dimethoxy-1,2-diphenylethyl-1-one (Omnirad 651, manufactured by IGM Resins BV) as a photopolymerization initiator, and 0.05 parts by weight of bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide (Omnirad 819, manufactured by IGM Resins BV) were added to a four-necked flask and irradiated with ultraviolet light under a nitrogen atmosphere to obtain a partially photopolymerized monomer slurry. Ultraviolet irradiation was continued until the viscosity of the liquid in the flask (measurement conditions: BH viscometer No. 5 rotor, 10 rpm, measurement temperature 30°C) reached approximately 20 Pa·s. Next, relative to 100 parts by weight of monomer paste, 0.09 parts by weight of 1,9-nonanediol diacrylate (NDDA) as a crosslinking agent and 0.3 parts by weight of isooctyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate (BASF "Irganox 1135") as an antioxidant were added and mixed evenly to obtain photocurable composition A. [Preparation of the first adhesive sheet] The photocurable composition A is applied to one side of the first substrate sheet (a polyester film Lumirror XD500P without a release layer, thickness 75µm) using a dispenser to form a first coating layer (thickness 20µm). Next, a release liner A is arranged on the formed first coating layer as the first release liner to obtain a first laminate. The first release liner is arranged so that the release layer is in contact with the first coating layer. Next, a light source is applied from the first substrate sheet side of the first laminate at an illumination of 2.42mW / cm 2 Under the condition of irradiation time of 10 minutes, ultraviolet light (black light lamp source) is used to photo-cur the first coating layer, thereby forming a laminate consisting of the first substrate sheet, the first adhesive sheet (thickness 20µm) and the first release liner. A test piece of 220 mm in length and 50 mm in width was cut from the formed laminate (the longitudinal direction is the coating direction of the photocurable composition). A 180° peeling test was performed on the test piece using a tensile testing machine, with only the first release liner peeled in the longitudinal direction, to evaluate the peeling force PS. 0. The peeling test conditions are as above. [Preparation of the second adhesive sheet] A laminate comprising the first adhesive sheet was prepared by the above method, and the first release liner was peeled off from the first adhesive sheet. Next, the photocurable composition A was applied to one side of the second substrate sheet (a polyester film Lumirror XD500P without a release layer, 75µm thick) using a dispenser to form a second coating layer (20µm thick). Next, a second release liner was placed on the formed second coating layer to obtain a second laminate. The second release liner used was the first release liner that had been peeled off from the first adhesive sheet. The second release liner was placed so that the release layer and the second coating layer were in contact. Next, the second laminate was irradiated with ultraviolet light under the same conditions as when the first adhesive sheet was prepared, so that the second coating layer was photocured, thereby forming a laminate consisting of the second substrate sheet, the second adhesive sheet (20µm thick) and the second release liner. A test piece of 220 mm in length and 50 mm in width was cut from the formed laminate (the longitudinal direction is the coating direction of the photocurable composition). A 180° peeling test was performed on the test piece using a tensile testing machine, with only the second release liner peeled in the longitudinal direction, to evaluate the peeling force PS. 1. The conditions for the peeling test are as described above. (Example 2) [Preparation of Release Liner B] A release liner B having a release layer (thickness 120 nm) on one side was prepared by the same method as that of the release liner A, except that the thickness of the release agent composition A to be coated on the liner substrate was changed. [Preparation of the First Adhesive Sheet] A first adhesive sheet was prepared in the same manner as in Example 1, except that release liner B was used as the first release liner. Furthermore, the peel force PS was evaluated using the laminate containing the first adhesive sheet in the same manner as in Example 1. 0. [Preparation of Second Adhesive Sheet] A laminate containing the first adhesive sheet was prepared by the above method, and the first release liner was peeled off from the first adhesive sheet. Next, a second adhesive sheet was prepared by the same method as in Example 1, using the first release liner peeled off from the first adhesive sheet as the second release liner. Furthermore, the peel force PS was evaluated using the laminate containing the second adhesive sheet by the same method as in Example 1. 1. (Example 3) [Preparation of photocurable component B] Photocurable component B was prepared by means of the same method as that used to prepare photocurable component A, except that no antioxidant was used. [Preparation of the First Adhesive Sheet] A first adhesive sheet was prepared by the same method as in Example 1, except that release liner B was used as the first release liner and photocurable composition B was used. Furthermore, the peel force PS was evaluated using the laminate including the first adhesive sheet by the same method as in Example 1. 0. [Preparation of Second Adhesive Sheet] A laminate containing the first adhesive sheet was prepared by the above method, and the first release liner was peeled off from the first adhesive sheet. Next, a second adhesive sheet was prepared by the same method as in Example 1, using the first release liner peeled off from the first adhesive sheet as the second release liner. Furthermore, the peel force PS was evaluated using the laminate containing the second adhesive sheet by the same method as in Example 1. 1. (Example 4) [Preparation of the first adhesive sheet] A first adhesive sheet was prepared in the same manner as in Example 1, except that release liner B was used as the first release liner. Furthermore, the peel force PS was evaluated using the laminate including the first adhesive sheet in the same manner as in Example 1. 0. [Preparation of the Second Adhesive Sheet] A laminate containing the first adhesive sheet was prepared by the above method, and the first release liner was peeled off from the first adhesive sheet. Next, a second adhesive sheet was prepared by the same method as in Example 1, except that the first release liner peeled off from the first adhesive sheet was used as the second release liner and the photocurable composition B prepared in Example 3 was used. Furthermore, the peeling force PS was evaluated using the laminate containing the second adhesive sheet by the same method as in Example 1. 1. (Examples 5 to 7) The first and second adhesive sheets were prepared in the same manner as in Example 2, except that the UV irradiation conditions during the preparation of the first and second adhesive sheets were changed as shown in Table 1. Furthermore, the peeling force PS was evaluated using the laminate containing the first adhesive sheet in the same manner as in Example 1. 0, and the peeling force PS was evaluated using a laminate containing a second adhesive sheet 1. (Examples 8 to 10) The first and second adhesive sheets were prepared for Examples 8 to 10 respectively by the same method as in Example 2, except that the compound listed in Table 1 was used as the antioxidant contained in the photocurable composition A. Furthermore, the peeling force PS was evaluated using the laminated body including the first adhesive sheet by the same method as in Example 1. 0, and the peeling force PS was evaluated using a laminate containing a second adhesive sheet 1. (Comparative Example 1) The first and second adhesive sheets were prepared in the same manner as in Example 2, except that the photocurable composition B prepared in Example 3 was used in the preparation of the first and second adhesive sheets. Furthermore, the peeling force PS was evaluated using the laminate including the first adhesive sheet in the same manner as in Example 1. 0, and the peeling force PS was evaluated using a laminate containing a second adhesive sheet 1. [Table 1] The abbreviations in Table 1 are as follows: Irg1135: Isooctyl-3-(3,5-di-tertiary butyl-4-hydroxyphenyl)propionate (BASF's "Irganox 1135", molecular weight 390) Irg1010: Neopentyl tetrakis[3-(3,5-di-tertiary butyl-4-hydroxyphenyl)propionate] (BASF's "Irganox 1010", molecular weight 1178) LA-52: Tetra(1,2,2,6,6-pentamethyl-4-piperidinyl)butane-1,2,3,4-tetracarboxylic acid ester (ADEKA's "ADK STAB LA-52", molecular weight 847) 2112: Tris(2,4-di-tertiary butylphenyl) phosphite (ADEKA's "ADK STAB 2112", molecular weight 647) As shown in Table 1, the embodiment is selected from the group consisting of the photocurable composition for forming the first adhesive sheet (first photocurable composition) and the photocurable composition for forming the second adhesive sheet (second photocurable composition) in which at least one of the photocurable compositions contains an antioxidant. Therefore, compared with the comparative example, the peeling force PS of the embodiment is From this result, we infer that the conditions of the embodiment are suitable for recycling the release liner. Furthermore, in the embodiments, the first release liner that has been peeled off from the first adhesive sheet is reused as the second release liner. However, by appropriately setting the manufacturing conditions of the second adhesive sheet, the first release liner can also be reused as the second substrate sheet. Industrial Applicability The adhesive sheet obtained by the production method of the present invention can be used, for example, in an optical layered body or an image display device. 1a: First adhesive sheet; 1b: Second adhesive sheet; 1c: Third adhesive sheet; 2, 2A, 2B: Optical film; 10a: First laminate; 10b: Second laminate; 10c: Third laminate; 11a: First substrate sheet; 11b: Second substrate sheet; 11c: Third substrate sheet; 12a: First coating layer; 12b: Second coating layer; 12c: Third coating layer; 13a: First release liner; 13b: Second release liner. 13c: Third release liner; 14: Light; 15a, 15b: Laminates; 17a, 17b, 17c: Laminates; 18: Exposed surfaces; 21, 22: Optical films of the attached sheet; 31, 33, 35, 36: Wrapped body; 32: Coating apparatus; 34: Light irradiation apparatus; 51: Supporting film; 52: Test piece; 53: Test plate; 54: Load; 131: Liner substrate; 132: Release layer; BB: Cross section. FIG1 is a schematic diagram illustrating an example of a method for manufacturing an adhesive sheet of the present invention. FIG2 is a cross-sectional view schematically showing an example of a release liner that can be used in the method for manufacturing an adhesive sheet of the present invention. FIG3A is a schematic diagram illustrating a method for measuring a latent variable of an adhesive sheet. FIG3B is a schematic diagram illustrating a method for measuring a latent variable of an adhesive sheet. FIG4 is a schematic diagram illustrating an example of a method for manufacturing an adhesive sheet of the present invention. FIG5 is a schematic diagram illustrating an example of a method for manufacturing an adhesive sheet of the present invention. FIG6 is a schematic diagram illustrating an example of a method for manufacturing an optical film attached to an adhesive sheet of the present invention. FIG7 is a schematic diagram illustrating an example of a method for manufacturing an optical film attached to an adhesive sheet of the present invention. FIG8 is a schematic diagram illustrating an example of a method for manufacturing an optical film attached to an adhesive sheet of the present invention. 1a: 1st adhesive sheet 1b: Second adhesive sheet 1c: 3rd adhesive sheet 10a: 1st laminated body 10b: Second layer 10c: Third layer 11a: 1st base sheet 11b: Second substrate sheet 11c: Third substrate sheet 12a: 1st coating layer 12b: 2nd coating layer 12c: Third coating layer 13a: First stripped lining material 13b: Second release liner 13c: 3rd release liner 14: Light 15a, 15b: Laminated body 17a, 17b, 17c: Laminated bodies
Claims
1. A method for manufacturing an adhesive sheet, comprising the following steps: Step A, irradiating a first laminate comprising a first substrate sheet, a first coating layer containing a first photocurable composition, and a first release liner sequentially with light to form a first adhesive sheet from the first coating layer; Step B, peeling the first release liner from the first adhesive sheet; and Step C, irradiating a second laminate comprising a second substrate sheet, a second coating layer containing a second photocurable composition, and a second release liner sequentially with light to form a second adhesive sheet from the second coating layer; wherein in Step C, the first release liner previously peeled off in Step B is used as the second substrate sheet and / or the second release liner; and at least one of the group consisting of the first photocurable composition in Step A and the second photocurable composition in Step C contains an antioxidant.
2. The manufacturing method of claim 1, wherein in the aforementioned step C, the aforementioned first stripped lining material, which has been stripped in the aforementioned step B, is used as the aforementioned second stripped lining material.
3. The manufacturing method of claim 2 further includes the following steps: Step D, peeling the aforementioned second release liner from the aforementioned second adhesive sheet; and Step E, irradiating a third laminate comprising a third substrate sheet, a third coating layer containing a third photocurable composition, and a third release liner in sequence with light, thereby forming a third adhesive sheet from the aforementioned third coating layer; In Step E, the aforementioned second release liner that has been peeled off in Step D is used as the aforementioned third substrate sheet and / or the aforementioned third release liner, or the aforementioned first release liner that has been peeled off in Step B is used as the aforementioned third substrate sheet and / or the aforementioned third release liner.
4. The manufacturing method of claim 2, wherein the peel force PS1 between the aforementioned second release liner and the aforementioned second adhesive sheet is 1.0 N / 50 mm or less.
5. The manufacturing method of claim 1, wherein the peel force PS0 between the first release liner and the first adhesive sheet is 0.01 N / 50 mm or more.
6. The manufacturing method of claim 1, wherein the first photocurable component and the second photocurable component each contain the aforementioned antioxidant.
7. The manufacturing method of claim 1, wherein the aforementioned antioxidant comprises at least one selected from the group consisting of hindered phenolic compounds and hindered amine compounds.
8. The manufacturing method of claim 1, wherein the molecular weight of the aforementioned antioxidant is 1500 or less.
9. The manufacturing method of claim 1, wherein the first photocurable composition and the second photocurable composition each comprise a monomer group containing (meth)acrylic acid monomers and / or a portion of the polymer of the aforementioned monomer group.
10. The manufacturing method of claim 9, wherein the aforementioned group of monomers includes carboxyl-containing monomers.
11. A method for manufacturing an optical film for an adhesive sheet, comprising the step of: depositing an optical film on the exposed surface of an adhesive sheet formed by any one of claims 1 to 10 to form an optical film for the adhesive sheet.
12. The manufacturing method of claim 11, wherein the aforementioned optical thin film comprises at least one thin film selected from the group consisting of polarizing thin films and phase difference thin films.
Citation Information
Patent Citations
Sheet-shaped adhesive peeling device capable of peeling the sheet-shaped adhesive attached to the workpiece without causing abnormalities such as cracks in the workpiece
TW202123361A
Adhesive sheet with release film and manufacturing method thereof
TW202138521A
Pressure-sensitive adhesive composition, method for producing same, and removable sheet comprising pressure-sensitive adhesive layer
TW202144527A
Mold release film
TW202227582A
Release film and method for producing same
WO2021192896A1