WO2015072364A1 - 非電導性抗菌シート及びその製造方法並びに抗菌方法 - Google Patents
非電導性抗菌シート及びその製造方法並びに抗菌方法 Download PDFInfo
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- WO2015072364A1 WO2015072364A1 PCT/JP2014/079180 JP2014079180W WO2015072364A1 WO 2015072364 A1 WO2015072364 A1 WO 2015072364A1 JP 2014079180 W JP2014079180 W JP 2014079180W WO 2015072364 A1 WO2015072364 A1 WO 2015072364A1
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- Prior art keywords
- bacteria
- sheet
- antibacterial
- antibacterial sheet
- width
- Prior art date
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
- B29C59/046—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for layered or coated substantially flat surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2667/00—Use of polyesters or derivatives thereof for preformed parts, e.g. for inserts
- B29K2667/003—PET, i.e. poylethylene terephthalate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
Definitions
- the present invention relates to a non-conducting antibacterial sheet made of an acrylic resin including a fine concavo-convex surface formed by forming a plurality of concavo-convex groups by forming a plurality of protrusions or grooves on the sheet surface in a substantially square shape in plan view.
- the present invention relates to a production method and an antibacterial method using the non-conductive antibacterial sheet.
- Non-Patent Documents 1 to 4 In the field of medicine and environmental pollution, efficient means for removing bacterial contamination are constantly being sought. Bacteria that grow on the surface of materials such as catheters and drainage often form biofilms. This symbolizes the life of a complex bacterium that provides protection from environmental stress (Non-Patent Documents 1 to 4).
- Non-Patent Documents 5 and 6 Approx. 80% of all bacterial infections are biofilm related (Non-Patent Documents 5 and 6). Biofilm formation not only increases irreparability, but biofilms can effectively penetrate the biological defense system, thus hindering treatment (Non-Patent Documents 5 and 6).
- Non-Patent Documents 7 and 8 it has been reported that sharklet (registered trademark) fine patterns resembling shark skin are effective in preventing biofilm formation and migration of Staphylococcus aureus and Escherichia coli.
- the fine pattern of sharklet includes a fine concavo-convex surface formed by forming a concavo-convex group by forming a plurality of protrusions or grooves on the sheet surface in a substantially square shape in plan view.
- the terrain width (feature width) and the concave space width are 2 ⁇ m, and the terrain height (feature height) is 3 ⁇ m.
- the fine pattern of sharklet registered trademark
- living bacteria were located in the space (Non-patent Document 7).
- FIG. 6 shows a schematic cross-sectional view of a conductive antibacterial sheet having such a conventional fine pattern.
- the protrusion 102 formed on the sheet surface 104 has a height L of 3 ⁇ m or more, the hem width W of the protrusion 102 is 2 ⁇ m, and the width of the recess space 120. Since S is 2 ⁇ m, the bacteria 24 are trapped in the recess space 120.
- the fine pattern of sharklet (registered trademark) is made using a silicone elastomer. If the terrain height is shallow (preferably 1 ⁇ m or less), many materials can be used for creating a shark skin fine pattern.
- Pseudomonas aeruginosa sodA and sodBmutants defective in manganese- and iron-cofactored superoxide dismutase activity demonstrate theimportance of the iron-cofactored formbolism Sakamoto A, TeruiY, Yamamoto T, Kasahara T, Nakamura M, Tomitori H, Yamamoto K, IshihamaA, Michael AJ, Igarashi K, Kashiwagi K. 2012.Enhanced biofilm form p the two-component signal transducingsystems, and ribosome recycling factor. Int J Biochem Cell Biol. 44: 1877-1886.
- the present invention has been made in view of the above-described problems of the prior art. Since the unevenness is shallower than in the prior art, a non-conducting antibacterial sheet that can use more materials, a manufacturing method thereof, and an antibacterial method are provided. The purpose is to provide.
- a first aspect of the non-conductive antibacterial sheet of the present invention is an acrylic formed by forming a concavo-convex group by forming a plurality of protrusions having a substantially square shape in plan view on the sheet surface.
- a non-conductive antibacterial sheet including a fine uneven surface made of a resin, wherein the protrusions are regularly spaced in the x direction and the y direction perpendicular to the x direction space and the y direction space.
- the height from the sheet surface to the top of the protrusion is 0.4 ⁇ m to 1 ⁇ m
- the skirt width of the protrusion is 2 ⁇ m to 3 ⁇ m
- the width of the space in the x direction and the skirt of the protrusion Bacteria having the same width and statically contacting the surface of the fine irregularities exhibit an antibacterial action without trapping the bacteria in the x-direction space.
- the width of the y-direction space is preferably 3 ⁇ m to 8 ⁇ m.
- sheet is intended to include a wide range of sheet-like materials and includes both film-like and plate-like materials as long as they are non-conductive.
- the height from the sheet surface to the top of the protrusion is 0.4 ⁇ m to 1 ⁇ m
- the skirt width of the protrusion is 2 ⁇ m to 3 ⁇ m
- the width of the space in the x direction is the same
- bacteria having a total length of about 3 ⁇ m are not trapped in the x-direction space, but the present inventors show that an antibacterial action is exhibited even if the bacteria are not trapped in the x-direction space. I found it. That is, the non-conducting antibacterial sheet of the present invention exhibits antibacterial action even if the unevenness of the fine unevenness surface is shallow.
- the second aspect of the non-conducting antibacterial sheet of the present invention is a fine uneven surface made of an acrylic resin formed by forming a plurality of grooves by forming a plurality of groove portions having a substantially square shape in plan view on the sheet surface.
- the non-conductive antibacterial sheet includes the groove part regularly formed in the x direction and the y direction perpendicular to the x direction with a predetermined width in the x direction space and the y direction space, and the groove part from the sheet surface.
- the depth to the bottom of the groove is 0.4 ⁇ m to 1 ⁇ m
- the opening width of the groove is 2 ⁇ m to 3 ⁇ m
- the width of the space in the x direction is the same as the opening width of the groove
- Bacteria that are in static contact with each other exhibit an antibacterial action without being trapped in the groove.
- the width of the y-direction space is preferably 3 ⁇ m to 8 ⁇ m.
- the groove is regularly formed with an x-direction space and a y-direction space having a predetermined width in the x direction and the y direction perpendicular thereto, and the depth from the sheet surface to the bottom of the groove. Is 0.4 ⁇ m to 1 ⁇ m, and when the opening width of the groove is 2 ⁇ m to 3 ⁇ m, bacteria having a total length of about 3 ⁇ m are not trapped in the groove, but exhibit antibacterial action even if not trapped in the groove.
- the present inventors have found that. That is, the non-conducting antibacterial sheet of the present invention exhibits antibacterial action even if the unevenness of the fine unevenness surface is shallow.
- acrylic resin polyacrylate is preferable.
- the non-conductive antibacterial sheet of the present invention is covered with bacteria that are placed on the surface so that the fine uneven surface is in static contact with the bacteria, so that the bacteria can be swarmed (chemotaxis). Is suppressed.
- the surface on which the bacteria are allowed to stand may be a filter surface. Even if it is a surface of a filter as said surface, bacterial swarming (chemotaxis) is suppressed.
- the antibacterial method of the present invention is characterized by using the non-conductive antibacterial sheet.
- the antibacterial method of the present invention it is preferable to suppress the bacterial biofilm formation by bringing bacteria into static contact with the fine uneven surface of the non-conductive antibacterial sheet.
- the non-conducting antibacterial sheet is placed on a bacterium that is placed on the surface to suppress the bacteria from warming.
- the method for producing a non-conductive antibacterial sheet of the present invention is characterized in that the fine uneven surface of the non-conductive antibacterial sheet is produced by transferring an acrylic resin to a synthetic resin film with a patterning roll.
- the acrylic resin is an ultraviolet curable acrylic resin, and the acrylic resin transferred to the synthetic resin film is cured by ultraviolet curing. Is preferred.
- the method for producing a non-conducting antibacterial sheet of the present invention is an ultraviolet curable type on the surface of a patterning roll having a fine concavo-convex pattern formed with a plurality of grooves and / or protrusions formed in a substantially square shape in plan view.
- a step of supplying the acrylic resin, a step of transferring the acrylic resin to the synthetic resin film by continuously conveying and bringing the synthetic resin film into contact with the surface of the patterning roll, and a transfer to the synthetic resin film It is preferable to include a step of curing the acrylic resin by ultraviolet irradiation by irradiating the acrylic resin.
- the unevenness may be shallower than in the prior art, it is possible to provide a non-conductive antibacterial sheet that can use more materials, a manufacturing method thereof, and an antibacterial method. .
- FIG. 1 shows one embodiment of the first aspect of the non-conductive antibacterial sheet of the present invention.
- symbol 10A shows one embodiment of the 1st aspect of this invention.
- the non-conducting antibacterial sheet 10A includes a non-conducting antibacterial surface 18a made of an acrylic resin formed by forming a plurality of projections 12a on the sheet surface 14a by forming a plurality of projections 12a having a substantially square shape in plan view.
- the protrusions 12a are regularly formed in the x direction and the y direction perpendicular to the x direction space 20a and y direction space 22a having a predetermined width.
- the x-direction space 20a is a space formed in the x-direction
- the y-direction space 22a is a space formed in the y-direction.
- the height from the sheet surface 14a to the top of the protrusion 12a is 0.4 ⁇ m to 1 ⁇ m
- the skirt width of the protrusion 12a is 2 ⁇ m to 3 ⁇ m
- the width of the x-direction space 20a and the protrusion The skirt width of the portion 12a is the same.
- the height H from the sheet surface 14a to the top of the protrusion 12a is 0.4 ⁇ m to 1 ⁇ m
- the skirt width BW of the protrusion 12a is 2 ⁇ m to 3 ⁇ m.
- polyacrylate is used as the acrylic resin for forming the fine uneven surface 18a
- a PET (polyethylene terephthalate) film is used as the sheet body 26, and the fine uneven surface 18a is formed on the sheet body 26.
- seat surface 14a was shown.
- the acrylic resin and the sheet body 26 are non-conductive.
- FIG. 2 shows one embodiment of the second aspect of the non-conductive antibacterial sheet of the present invention.
- symbol 10B shows one embodiment of the 2nd aspect of this invention.
- the non-conducting antibacterial sheet 10B includes a non-conducting surface 38a made of an acrylic resin formed by forming a concavo-convex group 36a by forming a plurality of grooves 32a having a substantially square shape in plan view on the sheet surface 34a.
- the groove portion 32a is regularly formed with an x-direction space 40a and a y-direction space 42a having a predetermined width in the x direction and the y direction perpendicular thereto.
- the x-direction space 40a is a space formed in the x-direction
- the y-direction space 42a is a space formed in the y-direction.
- the depth from the sheet surface 34a to the bottom of the groove 32a is 0.4 ⁇ m to 1 ⁇ m, the opening width of the groove 32a is 2 ⁇ m to 3 ⁇ m, the width of the x-direction space 40a and the width of the groove 32a
- the opening width is the same.
- the depth DT from the sheet surface 34a to the bottom of the groove 32a is 0.4 ⁇ m to 1 ⁇ m
- the opening width OW of the groove 32a is 2 ⁇ m to 3 ⁇ m.
- polyacrylate is used as an acrylic resin for forming the fine uneven surface 38a
- a PET (polyethylene terephthalate) film is used as the sheet body 26
- the fine uneven surface 38a is formed on the sheet body 26.
- seat surface 34a was shown.
- the acrylic resin and the sheet body 26 are non-conductive.
- FIG. 3 shows another embodiment of the first aspect of the non-conductive antibacterial sheet of the present invention.
- symbol 10C shows another embodiment of the 1st aspect of this invention.
- the non-conductive antibacterial sheet 10C includes a non-concavity surface 16b made of an acrylic resin formed by forming a plurality of projections 12b having a substantially square shape in plan view on the sheet surface 14b to form a concavo-convex group 16b.
- the protrusions 12b are regularly formed with an x-direction space 20b and a y-direction space 22b having a predetermined width in the x direction and the y direction perpendicular thereto.
- the x-direction space 20b is a space formed in the x-direction
- the y-direction space 22b is a space formed in the y-direction.
- the height from the sheet surface 14b to the top of the protrusion 12b is 0.4 ⁇ m to 1 ⁇ m
- the skirt width of the protrusion 12b is 2 ⁇ m to 3 ⁇ m
- the skirt width of the portion 12b is the same width. Even in the case of the non-conductive antibacterial sheet 10C, the antibacterial effect is exhibited even if bacteria are not trapped in the x-direction space 20b.
- polyacrylate is used as the acrylic resin for forming the fine uneven surface 18b
- a PET (polyethylene terephthalate) film is used as the sheet body 26
- the fine uneven surface 18b is formed on the sheet body 26.
- seat surface 14b was shown.
- the acrylic resin and the sheet body 26 are non-conductive.
- FIG. 4 shows another embodiment of the second aspect of the non-conductive antibacterial sheet of the present invention.
- the non-conducting antibacterial sheet 10D includes a non-conducting surface 38b made of an acrylic resin formed by forming a concavo-convex group 36b by forming a plurality of grooves 32b having a substantially square shape in plan view on the sheet surface 34b.
- the groove portion 32b is regularly formed with an x-direction space 40b and a y-direction space 42b having a predetermined width in the x direction and the y direction perpendicular thereto.
- the x-direction space 40b is a space formed in the x-direction
- the y-direction space 42b is a space formed in the y-direction.
- the depth from the sheet surface 34b to the bottom of the groove 32b is 0.4 ⁇ m to 1 ⁇ m, the opening width of the groove 32b is 2 ⁇ m to 3 ⁇ m, the width of the x-direction space 40b and the width of the groove 32b
- the opening width is the same. Even in the case of the non-conductive antibacterial sheet 10D, even if bacteria are not trapped in the groove 32b, the antibacterial action is exhibited.
- polyacrylate is used as the acrylic resin for forming the fine uneven surface 38b
- a PET (polyethylene terephthalate) film is used as the sheet body 26
- the fine uneven surface 38b is formed on the sheet body 26.
- seat surface 34b was shown.
- the acrylic resin and the sheet body 26 are non-conductive.
- Bacteria having moisture such as in solution form a biofilm, but are in static contact with the fine uneven surfaces 18a, 38a, 18b, and 38b of the non-conductive antibacterial sheets 10A to 10D of the present invention. Bacterial biofilm formation is suppressed.
- FIG. 7 schematically shows a state where biofilm formation is suppressed by the non-conductive antibacterial sheet of the present invention.
- the formation of the biofilm 37 of bacteria 24 that is in static contact with the fine uneven surface 18a of the nonconductive antibacterial sheet 10A in the solution 35 is suppressed. For this reason, the biofilm 37 is hardly formed.
- contacting statically means contacting in a quiet state without stirring or the like.
- non-conductive antibacterial sheet of the present invention is covered with bacteria that are placed on the surface so that the fine uneven surface is in static contact with the bacteria, thereby suppressing bacterial warming.
- FIG. 9 The state where the warming of bacteria is suppressed by covering the non-conductive antibacterial sheet of the present invention on the bacteria placed on the surface so that the fine uneven surface is in static contact with the bacteria is illustrated.
- FIG. 9 the bacteria 24 are placed on the surface 39 so that the bacteria 24 are statically in contact with the fine uneven surface 18 a of the non-conductive antibacterial sheet 10 ⁇ / b> A. Ming is suppressed.
- a filter surface is shown as the surface 39.
- standing means that the head is placed in a quiet state without stirring.
- the antibacterial method of the present invention is an antibacterial method using the non-conductive antibacterial sheet.
- the non-conducting antibacterial sheet of the present invention is applied to various surfaces such as medical facilities and nursing homes, flooring of buildings, hallways, tables, chairs, toilets, bathrooms, and suspensions of vehicles such as trains. If attached, the swarming of bacteria existing on the fine uneven surface of the non-conductive antibacterial sheet is effectively suppressed, and the formation of biofilm is also effectively suppressed. In this way, antibacterial is realized.
- the antibacterial method of the present invention can suppress the formation of the biofilm of the bacteria by statically bringing the bacteria into contact with the fine uneven surface of the non-conductive antibacterial sheet as described above.
- the antibacterial method of the present invention covers the non-conductive antibacterial sheet by placing the non-conductive antibacterial sheet on the bacteria that are placed on the surface so that the fine uneven surface is in static contact with the bacteria. Swarming can be suppressed.
- the fine uneven surface of the nonconductive antibacterial sheet is produced by transferring an acrylic resin to a synthetic resin film with a patterning roll.
- the acrylic resin is preferably an ultraviolet curable acrylic resin, and the acrylic resin transferred to the synthetic resin film is preferably cured by ultraviolet curing.
- an ultraviolet curable type surface is formed on the surface of a patterning roll 44 provided with a fine concavo-convex pattern 42 having a plurality of grooves and / or protrusions formed in a substantially square shape in plan view.
- the acrylic resin 46 transferred to the resin film 48 is cured with ultraviolet rays by irradiating with ultraviolet rays 50.
- the synthetic resin film 48 for example, a PET film can be applied.
- transport rolls 52 and 54 for transporting the synthetic resin film 48 are provided.
- ultraviolet irradiation devices 56 and 58 for irradiating ultraviolet rays are also provided. In this way, the nonconductive antibacterial sheet 10A can be manufactured.
- a plate base material (aluminum hollow roll) having a circumference of 600 mm and a surface length of 1100 mm was prepared, and a patterning roll was produced using New-FX (a fully automatic laser gravure plate making apparatus manufactured by Sink Laboratories, Inc.).
- New-FX a fully automatic laser gravure plate making apparatus manufactured by Sink Laboratories, Inc.
- a plate base material (aluminum hollow roll) was mounted in a copper plating tank, and the hollow roll was completely immersed in a plating solution to form a 40 ⁇ m copper plating layer at 20 A / dm 2 and 6.0 V.
- the plating surface was free of bumps and pits, and a uniform copper plating layer was obtained.
- the surface of this copper plating layer was polished using a two-head type polishing machine (Sink Laboratory Co., Ltd. polishing machine) to make the surface of the copper plating layer a uniform polishing surface.
- a photoresist thermal resist: TSER-NS (manufactured by Sink Laboratories)
- TSER-NS manufactured by Sink Laboratories
- the film thickness of the obtained photoresist was 7 ⁇ m as measured by a film thickness meter (F20 manufactured by FILLMETRICS, sold by Matsushita Techno Trading). The image was then developed with laser exposure.
- a laser stream FX was used and a predetermined pattern exposure was performed under an exposure condition of 300 mJ / cm 2 .
- the above development is performed using a TLD developer (Developer manufactured by Sink Laboratories, Inc.) at a developer dilution ratio (stock solution 1: water 7) at 24 ° C. for 90 seconds, and a predetermined resist pattern portion and a non-resist pattern. Part was formed.
- a copper chloride corrosive solution was spray-etched for 20 seconds on the copper plating layer of the non-resist pattern portion to form an etching recess having an etching depth of 0.4 ⁇ m. Thereafter, the photoresist in the resist pattern portion was peeled off with a 5% KOH aqueous solution.
- the hollow roll was mounted on a nickel plating tank and immersed in a plating solution to form a 1 ⁇ m nickel plating layer at 2 A / dm 2 and 7.0 V.
- the plating surface was free of bumps and pits, and a uniform nickel plating layer was obtained.
- a DLC coating film was formed on the upper surface of the nickel plating layer by a CVD method.
- the atmosphere was an argon / hydrogen gas atmosphere, the source gas was toluene, a film formation temperature of 80 to 120 ° C., and a film formation time of 180 minutes, and a DLC coating film having a thickness of 1 ⁇ m was formed.
- the patterning roll was provided with a fine concavo-convex pattern having a plurality of grooves and / or protrusions formed in a substantially square shape in plan view on the surface. was observed.
- an etching recess is formed by etching after development.
- a fine concavo-convex pattern in which a protrusion having a height of 1 ⁇ m or a groove having a depth of 1 ⁇ m is formed.
- the resist pattern portion and the non-resist pattern portion are covered with a hard coating film such as DLC without etching, so that a protrusion portion having a height of 1 ⁇ m or a groove portion having a depth of 1 ⁇ m is formed. It is preferable to form a fine uneven pattern.
- ⁇ Materials and methods> [Fine uneven surface of non-conductive antibacterial sheet]
- a topographic polyacrylate plate produced as described above and having the following four types of fine uneven surfaces was used as the non-conductive antibacterial sheet.
- Comparative Example 1 a polyacrylate plate having a smooth surface obtained by applying an acrylic resin to a PET film and curing it by ultraviolet rays was used.
- Example 1 The fine uneven surface of the polyacrylate plate was a fine uneven surface in which a plurality of protrusions having a substantially square shape in plan view as shown in FIG. 1 were regularly formed.
- the height from the sheet surface to the top of the protrusion is 0.4 ⁇ m
- the skirt width of the protrusion is 2 ⁇ m
- the width of the x-direction space is 2 ⁇ m
- the width of the y-direction space is 4 ⁇ m.
- Example 2 The fine uneven surface of the polyacrylate plate was a fine uneven surface in which a plurality of grooves having different lengths were regularly formed as shown in FIG.
- the depth from the sheet surface to the bottom of the groove is 0.4 ⁇ m, the opening width of the groove is 2 ⁇ m, the width in the x direction space is 2 ⁇ m, and the width in the y direction space is 4 ⁇ m.
- Example 3 The fine uneven surface of the polyacrylate plate was a fine uneven surface in which a plurality of protrusions with a length of 16 ⁇ m were regularly formed as shown in FIG. The height from the sheet surface to the top of the protrusion is 0.4 ⁇ m, the skirt width of the protrusion is 2 ⁇ m, the width of the x-direction space is 2 ⁇ m, and the width of the y-direction space is 6 ⁇ m.
- Example 4 The fine uneven surface of the polyacrylate plate was a fine uneven surface in which a plurality of grooves with a length of 16 ⁇ m were regularly formed in a plan view as shown in FIG.
- the depth from the sheet surface to the bottom of the groove is 0.4 ⁇ m
- the opening width of the groove is 2 ⁇ m
- the width in the x direction space is 2 ⁇ m
- the width in the y direction space is 6 ⁇ m.
- Non-Patent Document 10 5 ml of Pseudomonas aeruginosa (approximately 10 8 cells / ml) in an L-type glass tube (diameter 1.5 cm, horizontal length 13.5 cm, height 8 cm). In glucose (0.4%) VBMM minimal medium (9) at 37 ° C. with stirring at 120 rpm. Bacterial cell growth of Pseudomonas aeruginosa was observed by measuring the absorbance at 540 nm. To adjust the ratio of plate area to media volume, 25 piece polyacrylate plates (1 cm x 2 cm) with different surface shapes were added to L-type glass tubes.
- Crystal violet stain was solubilized with 20% acetic acid (0.2 ml) and the absorbance at 570 nm was measured. Biofilm formation was expressed in A 570 / A 595.
- a polyacrylate plate (diameter 6 mm) having a different surface shape was laid with the fine uneven surface facing upward so that bacteria were in static contact therewith.
- FIG. 11 shows the effect of various types of fine pattern plates on the growth of Pseudomonas aeruginosa cells upon agitation. Cell growth was observed by measuring absorbance [A 540 ] in the presence of various types of plates. As shown in FIG. 11, when bacterial cells were stirred and cultured, cell growth of Pseudomonas aeruginosa was not suppressed in any type of plate.
- Examples 1 to 4 and Comparative Example 1 Standing Experiment- The microtiter static biofilm assay was performed by placing the various plates of Examples 1 to 4 and Comparative Example 1 in each well with the micro uneven surface on top so that the bacteria were in static contact therewith. In contrast to the bacterial cell growth with agitation, biofilm formation on the plate was obtained when the topographical plate with the fine relief surface of Examples 1-4 was used instead of a smooth plate (Comparative Example 1) Was significantly suppressed. The suppression rate of biofilm formation by the topographical plate having the fine uneven surface of Examples 1 to 4 was approximately 70%. Even when the topographical plate having the fine uneven surface of Examples 3 and 4 was used, the formation of the biofilm was suppressed.
- FIG. 12 is a graph showing Pseudomonas aeruginosa biofilm formation after incubation on various types of plates without agitation. Biofilm formation was evaluated as described in the “Materials and Methods” section above.
- FIG. 13 is a photograph of cell swarming
- FIG. 14 is a graph showing the relative width of the swarming area of the cells covered with the topographical plate having the fine uneven surface of Examples 1 to 4. It is shown as a percentage compared to the cells covered by the plate.
- Student's t test For the values obtained in the presence of the smooth plate of Comparative Example 1 versus the values obtained in the presence of the topographical plate having the fine relief surface of Examples 1-4, Student's t test).
- the swarming of bacterial cells is strongly suppressed by the topographic plate having the fine uneven surface of Example 1 and Example 2, and the fine uneven surface of Example 3 and Example 4 is used.
- the topographical plate with the was weakly suppressed.
- the suppression rate of the swarming by the plates of Example 1 and Example 2 was about 65%.
- the suppression rate of the swarming by the plate of Example 4 was about 50%.
- the suppression rate of the swarming was almost the same even when the concave type plate (Example 2 and Example 4) provided with the groove was used. This result shows that the warming of bacterial cells is suppressed by the topographic plate having the fine uneven surface used in the examples.
- FIG. 15 shows the number of Pseudomonas aeruginosa cells after culturing on various types of plates without stirring.
- A is an SEM photograph of various types of plates, and B is various types of plates. It is a SEM photograph of the upper Pseudomonas aeruginosa. Bacterial cells were cultured as described in the description of FIGS.
- the number of bacterial cells on the plate was reduced to about 30% in both Example 1 and Example 2 compared to the smooth plate in Comparative Example 1.
- the plates of Example 3 and Example 4 were reduced by about 50% compared to the smooth plate of Comparative Example 1. Since the terrain height is small (0.4 ⁇ m), the bacterial cells are located on top of the protrusions on the plate surface of Example 1 and Example 3 and on the x-direction space of the plates of Examples 2 and 4 It was not located in the x direction space of the plate surface of Example 1 and Example 3 and the groove part of the plate of Example 2 and 4 (FIG. 15B).
- the location of bacterial cells in a topographical plate having a shallow concavo-convex (0.4 ⁇ m) surface is determined by a deep concavo-convex (3 ⁇ m) m surface like a conventional sharklet® micropattern. It was in contrast to the location of bacterial cells in the topographical plate.
- the present inventors suppress the formation of Pseudomonas aeruginosa biofilms even on topographical plates with a fine concavo-convex surface with a shallow terrain height (topography width and gap of 2 ⁇ m and topography height of 0.4 ⁇ m) made of polyacrylate. Confirmed to do.
- suppression of biofilm formation was also observed in E. coli (data not shown).
- suppression of biofilm formation was also observed in S. aureus (data not shown). Therefore, the effect was confirmed in both gram-negative and gram-positive bacteria.
- the rate at which biofilm formation and swarming motility are suppressed by the non-conductive antibacterial sheet of the present invention is further increased.
- the non-conductive antibacterial sheet of the present invention can be almost completely removed if the number of contaminated bacterial cells is smaller than 1 ⁇ 10 4 cells / cm 2 . Taken together, these results can significantly reduce bacterial infections if buildings and equipment in medical treatment-related facilities and places where people gather are covered by the non-conductive antibacterial sheet of the present invention. Is shown.
- 10A, 10B, 10C, 10D non-conducting antibacterial sheet of the present invention
- 12a, 12b protrusions
- 14a, 14b, 34a, 34b sheet surface
- 16a, 16b, 36a, 36b concavo-convex group
- 18a, 18b, 38a, 38b fine uneven surface
- 20a, 20b, 40a, 40b x-direction space
- 22a, 22b, 42a, 42b y-direction space
- 24 bacteria
- 26 sheet body
- 32a, 32b groove
- 35 solution
- 37 Biofilm
- 39 Surface
- 56, 58 Irradiation with ultraviolet Device: 100: Conventional conductive antibacterial sheet
- 104 Conventional sheet surface
- 102 Conventional protrusion
- 120 Conventional recess 130: sheet having a conventional smooth surface
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Abstract
Description
円周600mm、面長1100mmの版母材(アルミ中空ロール)を準備し、New-FX(株式会社シンク・ラボラトリー製全自動レーザーグラビア製版ロール製造装置)を用いてパターニングロールの製造を行った。まず、版母材(アルミ中空ロール)を銅メッキ槽に装着し、中空ロールをメッキ液に全没させて20A/dm2、6.0Vで40μmの銅メッキ層を形成した。メッキ表面はブツやピットの発生がなく、均一な銅メッキ層を得た。この銅メッキ層の表面を2ヘッド型研磨機(株式会社シンク・ラボラトリー製研磨機)を用いて研磨して当該銅メッキ層の表面を均一な研磨面とした。上記形成した銅メッキ層を基材としてその表面にフォトレジスト(サーマルレジスト:TSER-NS(株式会社シンク・ラボラトリー製))を塗布(ファウンテンコーター)、乾燥した。得られたフォトレジストの膜厚は膜厚計(FILLMETRICS社製F20、松下テクノトレーデイング社販売)で計ったところ、7μmであった。ついで、画像をレーザー露光し現像した。上記レーザー露光は、Laser Stream FXを用い露光条件300mJ/cm2で所定のパターン露光を行った。また、上記現像は、TLD現像液(株式会社シンク・ラボラトリー製現像液)を用い、現像液希釈比率(原液1:水7)で、24℃90秒間行い、所定のレジストパターン部と非レジストパターン部を形成した。
次に、図10と同様にして、パターニングロールの表面に紫外線硬化型のアクリル系樹脂を供給し、前記パターニングロールの表面に合成樹脂フィルムとしてPETフィルムを連続的に搬送し当接せしめることで前記PETフィルムにアクリル系樹脂を転写した。そして、前記PETフィルムに転写された前記アクリル系樹脂に、紫外線を照射して紫外線硬化せしめ、図1~図4に示したような4種類の微細凹凸表面を有する非電導性抗菌シートを製造した。
[非電導性抗菌シートの微細凹凸表面]
実施例1~4では、非電導性抗菌シートとして、上述のように製造し、下記のような4種類の微細凹凸表面を有するトポグラフィカルなポリアクリレートプレートを用いた。また、比較例1として、PETフィルムにアクリル系樹脂を塗布して紫外線硬化させただけの平滑表面を有するポリアクリレートプレートを用いた。
実施例2: ポリアクリレートプレートの微細凹凸表面は、図2に示すような平面視が略四角形状であり長さの異なる複数の溝部が規則的に形成された微細凹凸表面とした。シート表面から溝部の底までの深さが0.4μm、溝部の開口幅が2μm、x方向スペースの幅が2μm、y方向スペースの幅が4μm。
実施例3: ポリアクリレートプレートの微細凹凸表面は、図3に示すような平面視が略四角形状であり長さ16μmの複数の突起部が規則的に形成された微細凹凸表面とした。シート表面から突起部の頂上までの高さが0.4μm、突起部の裾幅が2μm、x方向スペースの幅が2μm、y方向スペースの幅が6μm。
実施例4: ポリアクリレートプレートの微細凹凸表面は、図4に示すような平面視が略四角形状であり長さ16μmの複数の溝部が規則的に形成された微細凹凸表面とした。シート表面から溝部の底までの深さが0.4μm、溝部の開口幅が2μm、x方向スペースの幅が2μm、y方向スペースの幅が6μm。
Hassett et al.(非特許文献10)の方法に従い、緑膿菌(およそ108cells/ml)をL-タイプガラスチューブ(直径1.5cm、水平長さ13.5cm、高さ8cm)中で、5mlのグルコース(0.4%)VBMM最小培地(9)中で37℃で120rpmで撹拌しながら培養した。緑膿菌の細菌細胞増殖は540nmでの吸光度を測定することによって観察された。培地の量に対するプレートの領域の比率を調整するために、異なる表面形状を備えた25ピースのポリアクリレートプレート(1cm x 2cm)をL-タイプガラスチューブに加えた。
非特許文献11に記載された方法に準じて、マイクロタイター静的バイオフィルムアッセイを行った。細菌細胞を一晩培養した液を初期吸光度(A540)が0.01~0.02(およそ106 cell/ml)となるようにVBMM培地中で1:1000で希釈した。希釈した培養液(50μl)を撹拌せずに37℃で24時間96ウェルのマイクロタイタープレート中で培養し、細菌細胞密度を吸光度(A595)で測定して決定した。浮遊性細菌細胞を取り除いた後、室温で30分間0.1%クリスタルバイオレット溶液(0.2ml)でバイオフィルムを染色し、蒸留水で5回洗浄した。クリスタルバイオレット染色(Crystal violet stain)を20%酢酸(0.2 ml)で可溶化し、570nmでの吸光度を測定した。バイオフィルムの形成は、A570/A595で発現した。各々のウェルに、異なる表面形状のポリアクリレートプレート(直径6mm)を微細凹凸表面を上にして細菌がその上に静的に接するように敷設した。
de la Fuente-Nunez et al. (非特許文献12)の方法に従い、スウォーミング運動性の実験を行った。細菌細胞は一晩培養したものを、VBMM培地で吸光度(A540)が0.05となるまで希釈した。5 μlの希釈した細菌細胞を、Luria-Bertani (LB) 培地を含む0.5%寒天プレートの中央にスポットし、異なる表面形状を備えたポリアクリレートプレート(1cm x 1cm)で蓋をした。寒天プレートを37℃で24時間培養した。写真をとり、スウォーミングエリアを測定した。
Lamppa and Grieswold(非特許文献13)の方法に準じて、SEMで観察した。細胞は、“スウォーミング運動性”の項で記述したように培養され、ポリアクリレートプレートは、4℃で一晩2%グルタルアルデヒドで固定した。プレートの脱水を、50%, 70%, 80%, 90% 及び 95%アセトンでそれぞれ15分間行い、100%アセトンと100%第三ブチルアルコールでの15分間の脱水に3回ずつ変えて行った。プレートはその後、真空蒸発器(JFD-310, JEOL,Japan)で3時間空気乾燥し、溶かしたアピエゾンワックス層とともにSEMのスタブに装着した。装着したプレートをその後、金及びパラジウムでスパッタコーティングし、SEM (JSM-6060LV, JEOL, Japan)で観察した。
[非電導性抗菌シート上のバイオフィルムの形成の減少]
非電導性抗菌シート自体が緑膿菌のバイオフィルム形成の減少にとって重要であるか否かを調べるために、細菌細胞の成長及び緑膿菌のバイオフィルム形成について、比較例1の平滑な表面を有するプレート及び実施例1~4の微細凹凸表面を有するプレートで比較した。
実施例1、実施例3及び比較例1の25ピースの種々のプレート (1 cm x 2 cm) を含む5mlのグルコースVBMM培地中で細菌細胞を撹拌培養した。また、プレートなしのものも比較のために同様に細菌細胞を撹拌培養した。図11に、撹拌しての緑膿菌の細胞成長における、種々のタイプの微細パターンプレートの効果を示す。細胞成長は種々のタイプのプレートの存在下で吸光度[A540]を測定することにより観察された。図11に示すように、細菌細胞を撹拌培養した場合には、どの種類のプレートでも緑膿菌の細胞成長は抑制されなかった。
それぞれのウェルに実施例1~4及び比較例1の種々のプレートを微細凹凸表面を上にして細菌がその上に静的に接するように置いてマイクロタイター静的バイオフィルムアッセイを行った。撹拌での細菌細胞成長とは対照的に、平滑なプレート(比較例1)の代わりに、実施例1~4の微細凹凸表面を有するトポグラフィカルなプレートを使用した場合、プレート上のバイオフィルム形成は著しく抑制された。実施例1~4の微細凹凸表面を有するトポグラフィカルなプレートによるバイオフィルム形成の抑制率は、およそ70%であった。実施例3及び4の微細凹凸表面を有するトポグラフィカルなプレートを使用した場合でも、バイオフィルムの形成は抑制された。実施例3及び4のプレートによるバイオフィルム形成の抑制率は、およそ30%であった。また、バイオフィルム形成の減少は、突起部を設けた凸部タイプのプレート(実施例1及び実施例3)に対して、溝部を設けた凹部タイプのプレート(実施例2及び実施例4)が使用された場合であっても、バイオフィルム形成の抑制効果は、ほとんど同じであった。結果を図12に示す。図12は、撹拌なしで、種々のタイプのプレート上で培養後の緑膿菌のバイオフィルム形成を示すグラフである。バイオフィルム形成は上述の「材料及び方法」の項に記載したように評価した。実施例1~4の微細凹凸表面を有するトポグラフィカルなプレートの存在下で得られた値に対する比較例1の平滑なプレートの存在下で得られた値に対して、スチューデントのt検定(Student’s t test)を行った。図12において、* p< 0.05; ** p< 0.01である。
それから、緑膿菌のスウォーミング運動性も非電導性抗菌シートによって抑制されるかどうかを検証した。何故ならば、細菌細胞のスウォーミングは細菌感染のための一つの重要な要素だからである。希釈した細胞を、柔らかい寒天面上にスポットし、実施例1~4及び比較例1の種々のプレートを、寒天面上に静置した細菌の上に被せてカバーし、37℃で24時間の条件下で培養した。図13及び図14に、種々のタイプのプレートでカバーした0.5%寒天プレート上での緑膿菌のスウォーミングを示す。細胞のスウォーミングは、上述した「材料及び方法」の項に記載したように評価した。図13が細胞のスウォーミングの写真、図14が、実施例1~4の微細凹凸表面を有するトポグラフィカルなプレートでカバーされた細胞のスウォーミング領域の相対幅を比較例1の平滑なプレートでカバーされた細胞と比較したパーセンテージで示したものである。実施例1~4の微細凹凸表面を有するトポグラフィカルなプレートの存在下で得られた値に対する比較例1の平滑なプレートの存在下で得られた値に対して、スチューデントのt検定(Student’s t test)を行った。図14において、* p< 0.05; ** p< 0.01である。
上述したスウォーミング運動性アッセイのために使用した実施例1~4及び比較例1の種々のプレート上の細菌細胞の状態を、より詳細に走査型電子顕微鏡(SEM)で分析した(図15)。種々のプレートの表面の微細パターントポグラフィを図15Aに示す。図15は、撹拌なしで、種々のタイプのプレート上で培養後の緑膿菌の細胞の数を測定したものであり、Aが種々のタイプのプレートのSEM写真、Bが種々のタイプのプレート上の緑膿菌のSEM写真である。細菌細胞は、図13及び図14の説明中に記載したように培養し、SEM上の10μm2における細胞を20の異なるプレートにおいてカウントした。種々のタイプのプレート上の平均細胞数は、平滑なプレート上で培養した細胞と比較したパーセンテージで示した。パーセントの細胞数は、標準誤差の平均値(mean ± S. E.)である。実施例1~4の微細凹凸表面を有するトポグラフィカルなプレートの存在下で得られた値に対する比較例1の平滑なプレートの存在下で得られた値に対して、スチューデントのt検定(Student’s t test)を行った。* p < 0.05; ** p < 0.01である。
シリコンエラストマーからなる鮫肌トポグラフィプレート(sharklet(登録商標))(地形幅及び隙間が2μmで地形高さが3μm)が、黄色ブドウ球菌(7)及び大腸菌(8)のバイオフィルム形成及びスウォーミングを抑制したことが報告されている。このプレートはまた、ウスバアオノリの遊走子(15)の付着も抑制した。
本発明者らは、ポリアクリレートからなる浅い地形高さ(地形幅及び隙間が2μmで地形高さが0.4μm)の微細凹凸表面を有するトポグラフィカルなプレートでも緑膿菌のバイオフィルム形成を抑制することを確認した。本発明の非電導性抗菌シートによれば、バイオフィルム形成の抑制はまた、大腸菌でも観察された(データは非表示)。さらに、本発明の非電導性抗菌シートによれば、バイオフィルム形成の抑制はまた、黄色ブドウ球菌でも観察された(データは非表示)。したがって、グラム陰性菌及びグラム陽性菌のいずれの菌でも効果が確認された。バイオフィルム形成及びスウォーミング運動性の減少には幾つかのファクターが関連しているものと考えられる。
Claims (11)
- 平面視が略四角形状の複数の突起部がシート表面に形成されることで凹凸群を形成してなるアクリル系樹脂製の微細凹凸表面を含む非電導性抗菌シートであって、
前記突起部が、x方向及びそれに直交するy方向に、所定の幅のx方向スペース及びy方向スペースをあけて規則的に形成され、
前記シート表面から前記突起部の頂上までの高さが0.4μm~1μmであり、
前記突起部の裾幅が2μm~3μmであり、前記x方向スペースの幅と前記突起部の裾幅が同一幅であり、
前記微細凹凸表面に静的に接している細菌が、前記x方向スペースに細菌がトラップされることなしに抗菌作用を発揮してなることを特徴とする非電導性抗菌シート。 - 平面視が略四角形状の複数の溝部がシート表面に形成されることで凹凸群を形成してなるアクリル系樹脂製の微細凹凸表面を含む非電導性抗菌シートであって、
前記溝部が、x方向及びそれに直交するy方向に、所定の幅のx方向スペース及びy方向スペースをあけて規則的に形成され、
前記シート表面から前記溝部の底までの深さが0.4μm~1μmであり、
前記溝部の開口幅が2μm~3μmであり、前記x方向スペースの幅と前記溝部の開口幅が同一幅であり、
前記微細凹凸表面に静的に接している細菌が、前記溝部に細菌がトラップされることなしに抗菌作用を発揮してなることを特徴とする非電導性抗菌シート。 - 前記非電導性抗菌シートの前記微細凹凸表面に静的に接している細菌のバイオフィルム形成が抑制されることを特徴とする請求項1又は2記載の非電導性抗菌シート。
- 前記非電導性抗菌シートを、前記微細凹凸表面が細菌に静的に接するように、面上に静置した細菌の上に被せることで、前記細菌のスウォーミングが抑制されることを特徴とする請求項1~3いずれか1項記載の非電導性抗菌シート。
- 前記面がフィルターの面であることを特徴とする請求項4記載の非電導性抗菌シート。
- 請求項1~5いずれか1項記載の非電導性抗菌シートを用いることを特徴とする抗菌方法。
- 請求項1~5いずれか1項記載の非電導性抗菌シートの前記微細凹凸表面に細菌を静的に接しせしめることにより、前記細菌のバイオフィルム形成を抑制することを特徴とする抗菌方法。
- 請求項1~5いずれか1項記載の非電導性抗菌シートを、面上に静置した細菌の上に被せることで、前記細菌のスウォーミングを抑制してなることを特徴とする抗菌方法。
- 請求項1~5いずれか1項記載の非電導性抗菌シートの製造方法であり、前記非電導性抗菌シートの前記微細凹凸表面が、パターニングロールでアクリル系樹脂を合成樹脂フィルムに転写することにより作製されることを特徴とする非電導性抗菌シートの製造方法。
- 前記アクリル系樹脂が紫外線硬化型のアクリル系樹脂であり、前記合成樹脂フィルムに転写された前記アクリル系樹脂が、紫外線硬化によって硬化せしめられてなることを特徴とする請求項9記載の非電導性抗菌シートの製造方法。
- 請求項1~5いずれか1項記載の非電導性抗菌シートの製造方法であり、
平面視が略四角形状の複数の溝部及び/又は突起部が形成されてなる微細凹凸パターンを表面に備えてなるパターニングロールの表面に紫外線硬化型のアクリル系樹脂を供給する工程と、
前記パターニングロールの表面に合成樹脂フィルムを連続的に搬送し当接せしめることで前記合成樹脂フィルムにアクリル系樹脂を転写する工程と、
前記合成樹脂フィルムに転写された前記アクリル系樹脂に、紫外線を照射することで紫外線硬化せしめる工程と、
を有することを特徴とする非電導性抗菌シートの製造方法。
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WO2022230533A1 (ja) * | 2021-04-30 | 2022-11-03 | 株式会社クレハ | 抗菌用成形体、食品用包装材、および生体内留置用装置 |
WO2024190201A1 (ja) * | 2023-03-15 | 2024-09-19 | メック株式会社 | 樹脂部材の抗ウイルス処理方法 |
JP7557220B1 (ja) | 2023-03-15 | 2024-09-27 | メック株式会社 | 樹脂部材の抗ウイルス処理方法 |
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US20160249610A1 (en) | 2016-09-01 |
TW201609363A (zh) | 2016-03-16 |
JP6427106B2 (ja) | 2018-11-21 |
JPWO2015072364A1 (ja) | 2017-03-16 |
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