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WO2013062082A1 - Produit de résine photosensible en couches pour plaque typographique - Google Patents

Produit de résine photosensible en couches pour plaque typographique Download PDF

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Publication number
WO2013062082A1
WO2013062082A1 PCT/JP2012/077708 JP2012077708W WO2013062082A1 WO 2013062082 A1 WO2013062082 A1 WO 2013062082A1 JP 2012077708 W JP2012077708 W JP 2012077708W WO 2013062082 A1 WO2013062082 A1 WO 2013062082A1
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Prior art keywords
photosensitive resin
weight
layer
resin layer
printing
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Ceased
Application number
PCT/JP2012/077708
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English (en)
Japanese (ja)
Inventor
本井　慶一
雪美 八和田
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Toyobo Co Ltd
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Toyobo Co Ltd
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Priority to JP2012549199A priority Critical patent/JP6241034B2/ja
Publication of WO2013062082A1 publication Critical patent/WO2013062082A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
    • G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
    • G03F7/095—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having more than one photosensitive layer

Definitions

  • the present invention relates to a photosensitive resin laminate used for producing a relief printing plate by computer plate making technology. More specifically, the present invention relates to fine independent points and image reproducibility excellent during plate making and printing. The present invention relates to an excellent photosensitive resin laminate for relief printing plates.
  • a photosensitive resin laminate (printing original plate) in which a photosensitive resin layer is provided on a support provided with an adhesive layer is used, and photolithography using a negative or positive film is performed.
  • corrugation in the photosensitive resin layer with the technique was common.
  • CTP technology Computer to Plate: CTP technology
  • digital image forming technology In recent years, in the field of letterpress printing, computer plate making technology (Computer to Plate: CTP technology) known as digital image forming technology has become extremely common.
  • CTP technique information processed on a computer is directly output on a printing plate to obtain a relief pattern that is a relief.
  • Such a CTP technique eliminates the need for a negative film manufacturing process, thereby reducing the cost and the time required to create the negative.
  • JP-A-7-506201 includes (a) a support, (b) an elastomeric binder, one or more types of monomers, and an initiator sensitive to non-infrared actinic radiation.
  • a photopolymerizable layer comprising a layer that is soluble, swellable or dispersible in a developer solution prior to exposure to actinic radiation, (c) a developer solution for the photopolymerizable layer prior to exposure to actinic radiation
  • barrier layers that are soluble, swellable, dispersible or liftable, and (d) one or more layers of an infrared sensitive material that is substantially opaque to actinic radiation, comprising infrared laser light
  • a photosensitive printing material used to prepare a flexographic printing plate comprising a material that can be ablated from the surface of a barrier layer when exposed to light.
  • an infrared ray-sensitive layer (heat-sensitive mask layer) opaque to actinic radiation is provided on a photosensitive resin layer, and the infrared-sensitive layer is evaporated by an infrared laser to form an image mask. It is formed and widely used.
  • Patent Document 2 a photosensitive resin laminate in which a soft resin cushion layer is provided on a support to improve image reproducibility
  • a photosensitive letterpress printing original plate see, for example, Japanese Patent Application Laid-Open No. 2010-26036 (Patent Document 4) whose image reproducibility has been improved by the CTP technique.
  • Patent Documents 2 to 4 any of the techniques disclosed in Patent Documents 2 to 4 described above provides a photosensitive resin laminate that can reproduce fine dots in a short exposure time in plate making and obtain a sharp printed matter with less weight during printing. Cann't get.
  • Patent Document 5 discloses a photosensitive resin laminate having at least a support, an adhesive layer, and a photosensitive resin layer, and an intermediate layer between the adhesive layer and the photosensitive resin layer.
  • a photosensitive resin, wherein the intermediate layer has a rebound resilience after photocuring of 15% or more, and the Shore D hardness of the intermediate layer is 5 ° or more lower than that of the photosensitive resin layer A laminate is disclosed.
  • the photosensitive resin laminate described in Patent Document 5 it is possible to improve the reproducibility of fine images during plate making and printing, but the adhesive strength at the interface between the intermediate layer and the photosensitive resin layer is improved. There was a problem that it was weak and caused delamination during printing.
  • the present invention has been made in order to solve the above-mentioned problems, and its object is to provide a photosensitive resin for letterpress printing plates which is excellent in fine independent points and image reproducibility during plate making and printing. It is to provide a laminate.
  • the present inventors finally completed the present invention in order to reproduce fine independent points and images with a short exposure time in plate making and to obtain a sharp printed material with less weight at the time of printing. It was. That is, the present invention is as follows.
  • the photosensitive resin laminate for a relief printing plate of the present invention is a photosensitive resin laminate for a relief printing plate comprising a support, an adhesive layer, a photosensitive resin layer, and a heat-sensitive mask layer. , Formed between the adhesive layer and the photosensitive resin layer with a resin having the same skeleton as the photosensitive resin constituting the photosensitive resin layer, having adhesiveness to the photosensitive resin layer, and after photocuring An intermediate layer having a Shore D hardness that is 5 ° or more lower than the Shore D hardness of the photosensitive resin layer is provided, and the thickness of the photosensitive resin layer is in the range of 350 to 700 ⁇ m.
  • the photosensitive resin laminate for relief printing plates of the present invention preferably has a total thickness in the range of 500 to 1000 ⁇ m.
  • the Shore D hardness of the photosensitive resin layer after photocuring is preferably in the range of 45 to 75 °.
  • FIG. 1 is a view schematically showing a photosensitive resin laminate 1 for a relief printing plate as a preferred example of the present invention.
  • the photosensitive resin laminate 1 of the present invention comprises a support 2, an adhesive layer 3, an intermediate layer 4, a photosensitive resin layer 5, and a mask layer 6 in this order. It has a stacked basic structure.
  • the support 2 used in the photosensitive resin laminate 1 of the present invention is flexible, but a material excellent in dimensional stability is preferable.
  • Examples of such support 2 include metal supports such as steel, aluminum, copper, and nickel, and thermoplastic resin supports such as polyethylene terephthalate film, polyethylene naphthalate film, polybutylene terephthalate film, and polycarbonate film.
  • metal supports such as steel, aluminum, copper, and nickel
  • thermoplastic resin supports such as polyethylene terephthalate film, polyethylene naphthalate film, polybutylene terephthalate film, and polycarbonate film.
  • a suitable example is given.
  • the thickness of the support 2 is not particularly limited, but is preferably in the range of 50 to 350 ⁇ m, preferably 100 to 250 ⁇ m from the viewpoints of mechanical properties, shape stability, and handleability during plate making. It is more preferable to be within the range.
  • the thickness of the support 2 is less than 50 ⁇ m, there is a tendency that the dimensional stability of the printing plate is impaired or the support is damaged at the time of release, and the thickness of the support 2 exceeds 350 ⁇ m. This is because the printing plate tends to be difficult to follow along the cylinder when being applied to the cylindrical cylinder.
  • the adhesive layer 3 used in the photosensitive resin laminate 1 of the present invention is formed using a known appropriate adhesive.
  • the type of the adhesive used for forming the adhesive layer 3 is not particularly limited.
  • a polyester urethane adhesive obtained by curing a soluble polyester with a polyvalent isocyanate, an epoxy adhesive, and the like are preferable examples.
  • a polyester urethane-based adhesive is preferable because of its excellent adhesiveness to a photosensitive resin, and among polyester urethane-based adhesives, an adhesive composed of polyester and isocyanurate type polyisocyanate is more desirable.
  • the adhesive used for forming the adhesive layer 3 may contain an additive as long as the object of the present invention is not impaired.
  • the additives include plasticizers, dyes, ultraviolet absorbers, antihalation agents, surfactants, and photopolymerizable vinyl monomers.
  • the thickness of the adhesive layer 3 in the present invention is not particularly limited, but is preferably in the range of 1 to 50 ⁇ m, and more preferably in the range of 5 to 30 ⁇ m. This is because when the thickness of the adhesive layer 3 is less than 1 ⁇ m, the antihalation function tends to be insufficient, and when the thickness of the adhesive layer 3 exceeds 50 ⁇ m, the production processability decreases. It is because it is in a tendency.
  • the intermediate layer 4 used in the photosensitive resin laminate 1 of the present invention is formed of a resin having the same skeleton as the photosensitive resin layer 5 described later, and has adhesiveness to the photosensitive resin layer 5. It is. Since the intermediate layer 4 is formed of a resin having the same skeleton as the photosensitive resin layer 5, the adhesive strength at the interface between the intermediate layer 4 and the photosensitive resin layer 5 can be improved, and a fine image can be retained. In addition to the improvement, it is possible to prevent peeling of the interface between the intermediate layer 4 and the photosensitive resin layer 5 that occurs when mounted on a small-diameter cylinder during printing.
  • Examples of the resin having the same skeleton as the photosensitive resin layer 5 forming the intermediate layer 4 include polyether amide (Japanese Patent Laid-Open No. 55-79437), polyether ester amide (Japanese Patent Laid-Open No. 58-117537, etc.).
  • Tertiary nitrogen-containing polyamide JP-A-50-7605, etc.
  • ammonium salt type tertiary nitrogen atom-containing polyamide JP-A-53-35555, etc.
  • an amide compound having at least one amide bond Addition polymers with organic diisocyanate compounds (JP-A-58-140737, etc.), addition polymers of diamines having no amide bond and organic diisocyanate compounds (JP-A-4-97154, etc.) Those having the same skeleton are selected according to the resin forming the photosensitive resin layer 5.
  • the photosensitive resin layer 5 and the intermediate layer 4 by forming the photosensitive resin layer 5 and the intermediate layer 4 with an addition polymer of a diamine having no amide bond and an organic diisocyanate compound, the resilience of the printing plate is increased, and the printability of fine images is increased. This is particularly preferable since the effect of further improving is achieved.
  • resin having the same skeleton means that one or more constituent chemical bonds are the same, and preferable chemical bonds include amide bonds, urethane bonds, Examples include urea bonds and ether bonds.
  • resin having the same skeleton for example, when the resin forming the intermediate layer 4 and the resin forming the photosensitive resin layer 5 are both polyureaurethane skeletons represented by the following structural formula (1) (Example 1 described later) 4 to 8), when both the resin forming the intermediate layer 4 and the resin forming the photosensitive resin layer 5 have a polyamide skeleton as shown in the following structural formula (2) (Examples 2 and 3 described later) In the case of the above), the resin that forms the intermediate layer 4 and the resin that forms the photosensitive resin layer 5 both have a polyetheramide skeleton (in the case of Example 9 described later).
  • R 1 is a hydrocarbon group having 2 to 10 carbon atoms, an aliphatic ring or an aromatic ring
  • R 2 is a hydrocarbon group having 2 to 10 carbon atoms, an aliphatic ring or It is an aromatic ring
  • R 3 represents ethylene, propylene or tetramethylene.
  • R 4 is a hydrocarbon group having 4 to 10 carbon atoms
  • R 5 is a hydrocarbon group having 2 to 10 carbon atoms, an aliphatic ring or an aromatic ring
  • R 6 Represents a hydrocarbon group having 4 to 10 carbon atoms.
  • the resin having the same skeleton is preferably the same skeleton as described above, but one or more of the chemical bonds configured as described above may be the same, and not necessarily the same skeleton.
  • the resin forming the intermediate layer 4 is a polyurethane skeleton and the resin forming the photosensitive resin layer 5 is a polyureaurethane skeleton is also included.
  • the intermediate layer 4 in the present invention has a Shore D hardness that is 5 ° or more lower than the Shore D hardness of the photosensitive resin layer 5 after photocuring. Since the intermediate layer 4 has such Shore D hardness, the cushioning effect due to the low hardness and high resilience of the intermediate layer 4 reduces the deformation of the photosensitive resin layer 5 due to the printing pressure, and the fineness at the time of printing. There is an effect that the reproducibility of the points can be improved. From the viewpoint of making such an effect more remarkable, the Shore D hardness of the intermediate layer 4 is preferably 10 ° or more lower than the Shore D hardness of the photosensitive resin layer 5 after photocuring, and is 20 °. More preferably, it is lower.
  • the difference between the Shore D hardness of the intermediate layer and the Shore D hardness of the photosensitive resin layer 5 after photocuring is less than 5 °, it is not preferable because the printability of the solid portion will be blurred.
  • the Shore D hardness of the intermediate layer 4 and the photosensitive resin layer 5 was measured at 25 ° C. using, for example, a Shore type durometer (Shore D type) (manufactured by West German Zubik) in accordance with JIS K6253. Points to the value.
  • the intermediate layer 4 may have a Shore D hardness that is 5 ° or less lower than the Shore D hardness of the photosensitive resin layer 5 after photocuring, but widens the printability of the solid portion.
  • the intermediate layer 4 in the present invention preferably has a rebound resilience of 15% or more, more preferably 20% or more, and particularly preferably 30% or more.
  • the rebound resilience of the intermediate layer 4 is 15% or more, and the Shore D hardness is lower by 5 ° or more than the Shore D hardness of the photosensitive resin layer 5 as described above.
  • the intermediate layer 4 in the present invention preferably has a thickness of 50 ⁇ m or more, and more preferably 80 ⁇ m or more, from the viewpoint of cushion effect and strength. This is because when the thickness of the intermediate layer 4 is less than 50 ⁇ m, the cushioning effect tends to be poor.
  • the thickness of the intermediate layer 4 is preferably 200 ⁇ m or less, and more preferably 150 ⁇ m or less so that ink does not adhere to the intermediate layer on the support.
  • the total thickness of the photosensitive resin laminate 1 of the present invention is not particularly limited, but is preferably in the range of 500 to 1000 ⁇ m, and more preferably in the range of 700 to 950 ⁇ m. This is because if the total thickness of the photosensitive resin laminate 1 is less than 500 ⁇ m, ink may adhere to the floor portion of the plate during printing, and if it exceeds 1000 ⁇ m, it is costly. This is because it may be disadvantageous.
  • a non-exposed portion is dissolved and removed using an appropriate solvent, preferably water, particularly neutral water, so that development can be carried out quickly and a printing plate (relief plate) can be obtained.
  • an appropriate solvent preferably water, particularly neutral water
  • a spray developing device it is preferable to use a spray developing device, a brush developing device, or the like.
  • an adhesive layer 3 having a thickness of 20 ⁇ m was provided on a polyethylene terephthalate film having a thickness of 188 ⁇ m as the support 2 with a polyurethane adhesive.
  • a polyester resin Byron RV-300, manufactured by Toyobo
  • the rebound elastic modulus of the formed intermediate layer 4 was measured and found to be 30%. Further, the solvent absorption weight increase rate of the intermediate layer 4 with respect to normal hexane was 7.3%, and it was confirmed that the ink was sufficiently resistant to the washing oil.
  • a mask layer 6 having heat sensitivity was formed on the photosensitive resin layer 5.
  • a dispersion binder a butyral resin, a tertiary amino group-containing polyamide, an ether group-containing polyamide, a polar group-free polyamide, and polyvinyl alcohol were prepared.
  • BM-5 manufactured by Sekisui Chemical Co., Ltd.
  • tertiary amino group-containing polyamide and ether group-containing polyamide those synthesized as follows were used.
  • the polyamide containing no polar group Macromelt 6900 (Henkel) was used.
  • GH23 manufactured by Nippon Synthetic Chemical Co., Ltd.
  • a dispersion binder As a dispersion binder, 27 parts by weight of a butyral resin and 39 parts by weight of a tertiary amino group-containing polyamide were dissolved in a solvent, and 34 parts by weight of carbon black was dispersed therein to prepare a dispersion liquid, which was used as a mask layer coating liquid. .
  • (Create mask layer) A bar coater that has been appropriately selected so that the layer thickness is 1.5 ⁇ m on a PET film support (E5000, manufactured by Toyobo Co., Ltd., thickness: 100 ⁇ m) subjected to mold release treatment on both sides. was applied and dried at 120 ° C. for 5 minutes to form a mask layer 6.
  • the exposure time to reproduce 100 ⁇ m independent points is 6 minutes. It was a relief printing original plate having high sensitivity and excellent independent point reproducibility. Regarding the relief obtained at that time, when the relief reproducibility was evaluated among the fine line reproducibility, a thin line having a width of 15 ⁇ m was reproduced. Next, in the same manner as in Example 1, when the evaluation of the presence / absence of printing fat among the thin line reproducibility was evaluated, there was no printing fat. Furthermore, as a result of evaluating the printability of the solid portion in the same manner as in Example 1, there was no blur. Further, the non-image area ink stain was not observed visually.
  • Example 4 A photosensitive resin laminate 1 having a total thickness of 800 ⁇ m was obtained in the same manner as in Example 1 except that the thickness of the photosensitive resin layer 5 was changed to 490 ⁇ m.
  • the exposure time for reproducing independent points having a diameter of 100 ⁇ m is This was a letterpress printing original plate having a high sensitivity and excellent independent point reproducibility for 4 minutes.
  • the relief reproducibility of the fine line reproducibility was evaluated, and a 10 ⁇ m wide thin line was reproduced.
  • Example 5 The photosensitive resin laminated body 1 was obtained like Example 1 except having changed the photosensitive resin layer 5 as follows. 2.9 parts by weight of 2-methylpentamethylenediamine (MPDA), 6.8 parts by weight of 1,4-bisaminopropylpiperazine (BAPP), 45.4 parts by weight of a polyethylene glycol hexamethylene diisocyanate reactant (HE-600) and 1.7 parts by weight of adipic acid was placed in 100 parts by weight of methanol and a heating and melting kettle equipped with a stirring blade, and after sufficient nitrogen substitution, the mixture was sealed and gradually heated to 65 ° C and stirred.
  • MPDA 2-methylpentamethylenediamine
  • BAPP 1,4-bisaminopropylpiperazine
  • HE-600 polyethylene glycol hexamethylene diisocyanate reactant
  • adipic acid 1.7 parts by weight of adipic acid was placed in 100 parts by weight of methanol and a heating and melting kettle equipped with a stirring blade, and after
  • Example 6> For only diglycidyl ether diacrylate, the Shore D hardness was the same as in Example 1 except that the crosslinker epoxy ester 400EA (manufactured by Kyoeisha Chemical Co., Ltd.) was changed to the crosslinker epoxy ester 200EA (manufactured by Kyoeisha Chemical Co., Ltd.). Was formed in the same manner as in Example 1 except that the intermediate layer 4 having a thickness of 950 ⁇ m was obtained.
  • the exposure time to reproduce 100 ⁇ m independent points is 4 times. It was a relief printing original plate having high sensitivity and excellent independent point reproducibility. Regarding the relief obtained at that time, the relief reproducibility of the fine line reproducibility was evaluated. As a result, a thin line having a width of 10 ⁇ m was reproduced. Next, in the same manner as in Example 1, when the evaluation of the presence / absence of printing fat among the thin line reproducibility was evaluated, there was no printing fat. Furthermore, as a result of evaluating the printability of the solid portion in the same manner as in Example 1, there was no blur. Further, the non-image area ink stain was not observed visually.
  • the photosensitive resin composition had a Shore D hardness of 48 ° after ultraviolet exposure and a rebound resilience of 27%.
  • the exposure time for reproducing independent points having a diameter of 100 ⁇ m is reproduced.
  • the exposure time was 4 minutes, and it was a relief printing original plate having high sensitivity and excellent independent point reproducibility.
  • the relief reproducibility of the fine line reproducibility was evaluated.
  • a thin line having a width of 10 ⁇ m was reproduced.
  • Example 9 The photosensitive resin laminated body 1 was obtained like Example 1 except having changed the intermediate
  • the polyureaurethane used as the synthetic polymer compound was changed to polyetheramide.
  • the temperature was gradually raised to distill methanol and water, and the mixture was concentrated until the temperature in the kettle reached 110 ° C. At this stage, a fluid and viscous photosensitive resin composition was obtained.
  • the photosensitive resin composition obtained after photocuring was coated on a 188 ⁇ m thick polyester film so as to have a film thickness of 100 ⁇ m and dried at 70 ° C., and then a 125 ⁇ m polyester film was further formed.
  • a support having a 310 ⁇ m intermediate layer that was superposed and exposed to light for 60 seconds using a chemical lamp having an illuminance of 10 mw / m 2 was obtained.
  • the Shore D hardness of the formed intermediate layer 4 was 35 °.
  • the photosensitive resin composition is an equimolar salt of ⁇ , ⁇ -diaminopolyoxyethylene obtained by adding acrylonitrile to both ends of polyethylene glycol having a number average molecular weight of 600 and reducing this with hydrogen: 60 parts by weight , ⁇ -caprolactam: 20 parts by weight and equimolar salt of hexamethylenediamine and adipic acid: 60 parts by weight of polyetheramide obtained by melt polymerization of 20 parts by weight was dissolved in methanol by stirring at 60 ° C. for 1 hour.
  • the exposure time for reproducing independent points having a diameter of 100 ⁇ m is reproduced.
  • the exposure time was 6 minutes, and it was a relief printing original plate having high sensitivity and excellent independent point reproducibility.
  • the relief obtained at that time when the relief reproducibility was evaluated among the fine line reproducibility, a thin line having a width of 15 ⁇ m was reproduced.
  • Example 1 when the evaluation of the presence / absence of printing fat among the thin line reproducibility was evaluated, there was no printing fat.
  • the photosensitive resin laminated body 1 was obtained like Example 1 except having changed the intermediate
  • the intermediate layer 4 was produced by changing the polyureaurethane used as the synthetic polymer compound to polyurethane. 50 parts by weight of polyurethane having a number average molecular weight of 600, 10 parts by weight of 1,5-butanediol and 32.7 parts by weight of hexamethylene diisocyanate were mixed and polymerized at 150 ° C. to obtain a polyurethane containing an ether bond. After 60 parts by weight of the obtained polyurethane was dissolved in methanol by stirring at 60 ° C.
  • a photosensitive resin laminate was prepared in the same manner as in Example 1 except that a photosensitive resin layer having a thickness of 680 ⁇ m was formed without providing an intermediate layer so that the total thickness was 950 ⁇ m.
  • the exposure time for reproducing independent points having a diameter of 100 ⁇ m was 12 times. This was a letterpress printing original plate having a low sensitivity and a satisfactory reproducibility of independent points.
  • a line having a width of 20 ⁇ m was reproduced.
  • Example 2 In the same manner as in Example 1, when the evaluation of the presence / absence of printing fat among the thin line reproducibility was evaluated, there was no printing fat. Furthermore, as a result of evaluating the printability of the solid portion in the same manner as in Example 1, there was no blur. Further, the non-image area ink stain was not observed visually. Peeling during printing was observed at the interface between the intermediate layer and the photosensitive resin layer, and the presence or absence of peeling of the photosensitive resin layer during cylindrical molding was evaluated in the same manner as in Example 1. As a result, the photosensitive resin layer Peeling of was observed.
  • Example 3 A photosensitive resin laminate having a total thickness of 700 ⁇ m was produced in the same manner as in Example 1 except that the thickness of the intermediate layer was changed to 250 ⁇ m and the thickness of the photosensitive resin layer was changed to 240 ⁇ m.
  • the exposure time for reproducing independent points having a diameter of 100 ⁇ m was 4 times. This was a high-sensitivity letterpress printing original plate. About the relief obtained at that time, when the relief reproducibility was evaluated among the fine line reproducibility, a 10 ⁇ m wide line was reproduced.
  • a photosensitive resin laminate was prepared in the same manner as in Example 1 except that the photosensitive resin composition for forming an intermediate layer was changed to a photosensitive resin composition for forming a photosensitive resin layer having a Shore D hardness of 55 °. Produced.
  • the exposure time for reproducing independent points having a diameter of 100 ⁇ m was 4 times. This was a high-sensitivity letterpress printing original plate. About the relief obtained at that time, when the relief reproducibility was evaluated among the fine line reproducibility, a 10 ⁇ m wide line was reproduced.
  • the obtained printed matter does not exhibit the cushion function of the intermediate layer, and the relief layer is deformed by the printing pressure, so that the fine image is thickened and the solid portion is distorted. It was not obtained. In addition, the non-image area ink stain was not visually observed. No peeling was observed during printing at the interface between the intermediate layer and the photosensitive resin layer. Furthermore, as a result of evaluating the presence or absence of peeling of the photosensitive resin layer during cylindrical molding in the same manner as in Example 1, peeling of the photosensitive resin layer was not observed.
  • the exposure time to reproduce 100 ⁇ m independent points is 4 minutes. It was a relief printing original plate having high sensitivity and excellent independent point reproducibility. Regarding the relief obtained at that time, the relief reproducibility of the fine line reproducibility was evaluated. As a result, a thin line having a width of 10 ⁇ m was reproduced. Next, as in Example 1, when evaluating the presence or absence of printing fat among the thin line reproducibility, printing fat was observed. Furthermore, as a result of evaluating the printability of the solid portion in the same manner as in Example 1, there was no blur. Further, the non-image area ink stain was not observed visually.
  • the photosensitive resin laminated body 1 was obtained like Example 1 except having changed the photosensitive resin layer as follows.
  • the photosensitive resin composition for forming the photosensitive resin layer was changed by changing only the ratio of glycerin dimethacrylate (crosslinking agent light ester G101P, manufactured by Kyoeisha Chemical Co., Ltd.) and epoxy ester 40EM (produced by Kyoeisha Chemical Co., Ltd.) 29.5 parts by weight and 4.0 parts by weight of epoxy ester 40EM.
  • the photosensitive resin composition had a Shore D hardness of 74 ° and an impact resilience of 28% after ultraviolet exposure.
  • the exposure time to reproduce 100 ⁇ m independent points is 4 minutes. It was a relief printing original plate having high sensitivity and excellent independent point reproducibility. Regarding the relief obtained at that time, the relief reproducibility of the fine line reproducibility was evaluated. As a result, a thin line having a width of 10 ⁇ m was reproduced. Next, as in Example 1, when evaluating the presence or absence of printing fat among the thin line reproducibility, printing fat was observed. Furthermore, as a result of evaluating the printability of the solid portion in the same manner as in Example 1, blurring occurred. Further, the non-image area ink stain was not observed visually.
  • Example 7 A photosensitive resin laminate having a total thickness of 1050 ⁇ m was produced in the same manner as in Example 1 except that the thickness of the photosensitive resin layer was 740 ⁇ m.
  • the exposure time to reproduce 100 ⁇ m independent points is 6 minutes. It was a relief printing original plate having high sensitivity and excellent independent point reproducibility. Regarding the relief obtained at that time, the relief reproducibility of the fine line reproducibility was evaluated. As a result, a thin line having a width of 30 ⁇ m was reproduced.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Materials For Photolithography (AREA)

Abstract

La présente invention concerne un produit de résine photosensible en couches (1) pour des plaques typographiques. Ledit produit comprend un support (2), une couche adhésive (3), une couche de résine photosensible (5) et une couche de masque thermosensible (6), le produit de résine photosensible en couches (1) comprenant en outre une intercouche (4) entre la couche adhésive (3) et la couche de résine photosensible (5), l'intercouche (4) étant constituée d'une résine qui possède le même squelette que la résine photosensible qui constitue la couche de résine photosensible (5), possédant une adhésivité à la couche de résine photosensible (5) et possédant une dureté Shore D inférieure d'au moins 5° à la dureté Shore D de la couche de résine photosensible (5) qui a été photopolymérisée. La couche de résine photosensible (5) possède une efficacité dans la plage de 350 à 700 µm. Ainsi, il est possible de proposer un produit de résine photosensible en couches pour des plaques typographiques, qui soit excellent en termes de reproductibilité de points et d'images indépendants et fins pendant la fabrication des plaques et l'impression.
PCT/JP2012/077708 2011-10-28 2012-10-26 Produit de résine photosensible en couches pour plaque typographique Ceased WO2013062082A1 (fr)

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JP2012549199A JP6241034B2 (ja) 2011-10-28 2012-10-26 凸版印刷版用感光性樹脂積層体

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JP2009541786A (ja) * 2006-06-22 2009-11-26 フリント グループ ジャーマニー ゲーエムベーハー フレキソ印刷要素を製造するための光重合可能な積層体
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JP2009541786A (ja) * 2006-06-22 2009-11-26 フリント グループ ジャーマニー ゲーエムベーハー フレキソ印刷要素を製造するための光重合可能な積層体
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WO2018181354A1 (fr) * 2017-03-31 2018-10-04 東洋紡株式会社 Plaque d'impression flexographique ctp photosensible
JP6414375B1 (ja) * 2017-03-31 2018-10-31 東洋紡株式会社 感光性ｃｔｐフレキソ印刷原版
CN110462519A (zh) * 2017-03-31 2019-11-15 东洋纺株式会社 感光性ctp柔性版印刷原版
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CN110462519B (zh) * 2017-03-31 2023-05-02 东洋纺株式会社 感光性ctp柔性版印刷原版

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