EP1850308A2 - Klebeetikett, Schichtklebeetikett mit Abziehschicht und Informationsleseverfahren - Google Patents

Klebeetikett, Schichtklebeetikett mit Abziehschicht und Informationsleseverfahren Download PDF

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Publication number
EP1850308A2
EP1850308A2 EP07106580A EP07106580A EP1850308A2 EP 1850308 A2 EP1850308 A2 EP 1850308A2 EP 07106580 A EP07106580 A EP 07106580A EP 07106580 A EP07106580 A EP 07106580A EP 1850308 A2 EP1850308 A2 EP 1850308A2
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EP
European Patent Office
Prior art keywords
adhesive label
printing
adhesive
light
release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07106580A
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English (en)
French (fr)
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EP1850308A3 (de
Inventor
Satoru Oji Tac Co. Ltd. Matsubayashi
Masahiro Oji Tac Co. Ltd. Fukimbara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Oji Paper Co Ltd
Oji Tac Co Ltd
Original Assignee
Oji Paper Co Ltd
Oji Tac Co Ltd
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Publication date
Application filed by Oji Paper Co Ltd, Oji Tac Co Ltd filed Critical Oji Paper Co Ltd
Publication of EP1850308A2 publication Critical patent/EP1850308A2/de
Publication of EP1850308A3 publication Critical patent/EP1850308A3/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like

Definitions

  • the present invention relates to an adhesive label on which information such as bar codes is printed with an ink which emits fluorescence due to the irradiation of excitation light, as well as an adhesive label where a release sheet is laminated.
  • the present invention relates to an information reading method by which the information printed with the ink which emits fluorescence due to the irradiation of excitation light is read.
  • an ink which emits fluorescence due to the irradiation of excitation light is used (hereinafter, the ink which emits fluorescence due to the irradiation of excitation light is referred to as a "fluorescent ink").
  • a bar code reading method a method where ultraviolet radiation is irradiated on bar codes as an excitation light and the bar codes are read due to a sensor, which detects light having a wavelength for detection in the fluorescence emitted from the bar codes, is usually adopted.
  • the peak wavelength of a fluorescence which is emitted from bar codes is selected as the wavelength for detection.
  • Patent document 1 Japanese Unexamined Patent Application, First Publication No. Hei 08-150375
  • Patent document 2 Japanese Unexamined Patent Application, First Publication No. Hei 08-337228
  • the present invention is made in view of the aforementioned circumstances and it is an object to provide an adhesive label where the information printed with a fluorescent ink on a printing surface is read accurately as well as a release-sheet laminated adhesive label. Additionally, an object of the present invention is to provide an information-reading method by which the information printed with the fluorescent ink on the printing surface of the adhesive label can be read accurately.
  • the present inventors invented the adhesive label, release-sheet laminated adhesive label, and information reading method below as a result of further studies.
  • the present invention contains the following configurations.
  • the adhesive label of the present invention By using the adhesive label of the present invention, the information printed on a printing surface with a fluorescent ink is read accurately.
  • first and second light absorbing agents are contained in the adhesive layer in the adhesive label of the present invention, it is readily possible to contain the first and second light absorbing agents in the adhesive label.
  • the adherend, onto which the adhesive label is pasted is readily visible through the adhesive label.
  • the adhesive label of the present invention When the adhesive layer of the adhesive label of the present invention has removability, the adhesive label can be released again after being pasted onto an adherend.
  • the release-sheet laminated adhesive label of the present invention By using the release-sheet laminated adhesive label of the present invention, the information printed on a printing surface with a fluorescent ink is read accurately.
  • the information printed on a printing surface of an adhesive label with a fluorescent ink can be read accurately.
  • Fig. 1 shows an adhesive label of the present embodiment.
  • An adhesive label 10 of the present embodiment is pasted onto postal matter such as postcards and envelopes, has a printing surface 11a where bar codes, which are information, are printed with a fluorescent ink, and is irradiated with ultraviolet radiation, which is excitation light, in order to read the bar codes.
  • the adhesive label 10 of the present embodiment has a substrate for printing 11, one surface of which is the printing surface 11a, and an adhesive layer 12, which is provided on the other surface of the substrate for printing 11.
  • materials as the substrate for printing 11 may be translucent or transparent to visible light, those which are transparent are preferable since the surface of postal matter is readily visible through the adhesive label 10 when pasted on the postal matter.
  • transparent substrates examples include glassine paper which is subjected to an intensive super calendar treatment, enamel paper where a clarifying agent is impregnated or coated, parchment paper, transparent plastic films, and translucent synthetic paper.
  • the total light transmittance of visible light of the substrate for printing 11 is preferably 60% or more and more preferably 80% or more since the surface of postal matter will become readily visible through the adhesive label 10.
  • the total light transmittance of visible light in the present invention is a value measured according to JIS K 7361-1 using a D65 light.
  • the substrate for printing 11 include an ink accepting layer which contains inorganic particles such as silica, a cationic compound, and binders such as polyvinyl alcohol, on the printing surface 11a side.
  • ink accepting layer which contains inorganic particles such as silica, a cationic compound, and binders such as polyvinyl alcohol
  • the average primary-particle diameter of the inorganic particles contained in the ink accepting layer is preferably 30 nm or less and more preferably 3 to 15 nm.
  • an ink accepting layer which is highly transparent and is more excellent in printing concentration, bleeding prevention, and ink absorbability, can be achieved.
  • All the average particle diameters in the present invention refer to the particle diameter observed by electron microscopes (SEM and TEM) and are those derived by taking electron micrographs with a magnification of 10 to 400 thousand-fold, measuring the Martin's diameters of particles in a 5-cm square therein, and averaging them (described in " Particle Handbook” published by Asakura Publishing Co., Ltd., p52, 1991 , or the like).
  • inorganic particles are agglomerated particles (secondary particles) where primary particles are agglomerated
  • secondary particles although the average secondary-particle diameter is not particularly limited, 0.05 to 1.0 ⁇ m is preferable and 0.05 to 0.5 ⁇ m is more preferable.
  • Specific surface area of inorganic particles measured by the BET method is preferably within the range of 100 m 2 /g and approximately 1000 m 2 /g and more preferably 200 to 400 m 2 /g.
  • the BET method referred to in the present invention is one of the methods for measuring powder surface area due to a gas phase adsorption method and is a method to determine the total surface area of 1 g of sample from adsorption isotherms, that is, the specific surface area.
  • Examples of the materials for inorganic particles include zeolites, precipitated calcium carbonate, heavy calcium carbonate, magnesium carbonate, kaolin, talc, silica, calcium sulfate, barium sulfate, titanium oxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, aluminum hydroxide, alumina, alumina hydrates, aluminosilicate, boehmite, and pseudoboehmite.
  • Silica, alumina, alumina hydrates, and aluminosilicate are particularly preferable among them in view of their ink absorbability and silica is especially preferable.
  • gas phase method silica is preferable since transparency is further enhanced.
  • Gas phase method silica is formed by the flame hydrolysis method and the method is also called the dry method in contrast to the wet method. Specifically, gas phase method silica is formed by combusting silicon tetrachloride together with hydrogen and oxygen.
  • silanes such as methyltrichlorosilane and trichlorosilane are used alone instead of silicon tetrachloride, or used by being mixed with silicon tetrachloride.
  • Gas phase method silica is commercially available as a powder having very low bulk density.
  • particles of silica-cationic compound agglomerates as silica since the transparency of an ink accepting layer, color developing properties of an ink, and weather resistance thereof are enhanced and ink absorbability is also improved.
  • particles of silica-cationic compound agglomerates used here refers to those obtained by grinding the grains of silica-cationic compound agglomerates, which are obtained by mixing and agglomerating amorphous silica and cationic compounds. These particles of silica-cationic compound agglomerates are substantially formed from secondary particles, which are produced as a result of the agglomeration of primary particles.
  • the amorphous silica constituting the particles of silica-cationic compound agglomerates preferably has an average primary-particle diameter of 3 to 30 nm.
  • the average primary-particle diameter is less than 3 nm, voids between primary particles will be extremely small resulting in a considerable reduction in the capability thereof to absorb ink or the solvents in ink.
  • the average primary-particle diameter exceeds 30 nm, secondary particles will be large resulting in a possible reduction in the transparency of ink accepting layers.
  • cationic compounds generally used in the sheet for ink jet printing can be used as the cationic compounds used in the particles of silica-cationic compound agglomerates.
  • Examples thereof include primary amine-type cationic polymers having, as building blocks thereof, primary amine salts such as monoallylamine salts, urethane-modified allylamine salts, vinylamine salts, polyamidine-based compounds, N-vinyl acrylic amidine salts, dicyandiamide/formalin polycondensates, and dicyandiamide/polyethyleneamine polycondensates; secondary amine-type cationic polymers having, as building blocks thereof, secondary amine salts such as diallylamine salts, and ethyleneimine salts; tertiary amine-type cationic polymers having, as building blocks thereof, tertiary amine salts such as diallylmethylamine salts; quaternary ammonium-type cationic polymers having, as building blocks thereof, quaternary ammoni
  • the amount of the cationic compounds added is preferably adjusted within the range of 1 to 30 mass parts relative to 100 mass parts of the amorphous silica and more preferably 5 to 20 mass parts.
  • the breaking down method (method to break down aggregated materials) where a strong force is applied by mechanical means is adopted.
  • mechanical means include supersonic waves, high speed mill, roller mill, container-driven medium mill, medium stirring mill, jet mill, grinder, sand grinder, and homogenizer,
  • the average particle diameter of particles of the silica-cationic compound agglomerates is preferably 700 nm or less, more preferably 10 to 300 nm, and particularly preferably 20 to 200 nm.
  • the average particle diameter of particles of silica-cationic compound agglomerates exceeds 700 nm, there is a concern that transparency is considerably deteriorated and printing concentration is highly reduced.
  • the average particle diameter of particles of silica-cationic compound agglomerates is extremely small, there is a concern that sufficient ink absorption rate is not achieved.
  • Examples of the cationic compounds contained in the ink accepting layer include those similar to the ones used in the particles of silica-cationic compound agglomerates.
  • the thickness of the substrate for printing 11 is preferably 25 to 150 ⁇ m. When the thickness of the substrate for printing 11 is 25 ⁇ m or more, the adhesive label 10 will be difficult to tear and when the thickness is 150 ⁇ m or less, flexibility of the adhesive label 10 is not impaired, resulting in excellent handling properties.
  • the adhesive layer 12 in the present embodiment is a layer configured from the adhesive composition, which contains an adhesive and the first and second light absorbing agents.
  • Adhesives are not particularly limited and, for example, natural rubber-based adhesives, synthetic rubber-based adhesives, acrylic adhesives, urethane adhesives, silicone adhesives, or the like are used. Additionally, these adhesives may be any of a solvent type, emulsion type, and water type.
  • acrylic adhesives, urethane adhesives, and silicone adhesives which are solvent type are preferable from the viewpoint of transparency to visible light and compatibility with the second light absorbing agent.
  • adhesive label 10 can be readily released from postal matter after the adhesive label 10 has finished playing its role when the adhesive layer 12 has removability, it is preferable that adhesives be those having removability.
  • the adhesives having removability are not particularly limited as long as they have removability and examples thereof include those having removability in which adhesives are cross-linked by crosslinkers.
  • auxiliaries may be added to the adhesives where necessary.
  • auxiliaries include thickening agents, pH adjusting agents, tackifiers, binders, crosslinkers, adhesive particles, antifoaming agents, antiseptic/mildewproofing agents, pigments, inorganic fillers, stabilizers, wetting agents, and moistening agents.
  • the first light absorbing agent in the present embodiment absorbs the ultraviolet radiation, which is irradiated in order to read the bar codes printed with a fluorescent ink on the printing surface 11a of the substrate for printing 11, and is one which is generally called an ultraviolet absorber.
  • Examples of the first light absorbing agents in the present embodiment include benzotriazole-based ultraviolet absorbers and benzophenone-based ultraviolet absorbers.
  • Benzotriazole-based ultraviolet absorbers particularly absorb the ultraviolet radiation having a wavelength of 280 to 360 nm.
  • benzotriazole-based ultraviolet absorbers include 2-(2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole (for example, Cinubin P (trade name) manufactured by Ciba Specialty Chemicals K.K.), 2-(5-t-octyl-2-hydroxyphenyl)benzotriazole (for example, Chemisorb 79 (trade name) manufactured by Chemipro Kasei Kaisha, Ltd.), 2-(2'-hydroxy-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3-di-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxyphenyl
  • Benzophenone-based ultraviolet absorbers particularly absorb the ultraviolet radiation having a wavelength of 300 nm or less.
  • benzophenone-based ultraviolet absorbers include 2,4-dihydroxybenaophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octyloxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-hydroxy-4,4'-dimethoxybenzophenone, and 2-hydroxy-4-methoxy-5-sulfabenzophenone.
  • One kind of the first light absorbing agent may be used alone or two or more kinds thereof may be used concomitantly.
  • the content of the first light absorbing agent in the adhesive layer 12 is preferably 0.1 to 10 mass parts relative to 100 mass parts of the adhesive solid content and more preferably 1 to 7 mass parts.
  • the content of the first light absorbing agent is 0.1 mass parts or more relative to 100 mass parts of the adhesive solid content, more of the ultraviolet radiation irradiated for reading bar codes can be absorbed thus further preventing the ultraviolet radiation from transmitting through the adhesive label 10.
  • the content of the first light absorbing agent is 10 mass parts or less relative to 100 mass parts of the adhesive solid content, reductions in adherence of the adhesive layer 12 can be prevented, and this is also economical since the agent is not contained in excess.
  • the second light absorbing agent absorbs light having the wavelength for detection in the fluorescence (usually visible light), which is emitted due to the ultraviolet radiation irradiated in order to read bar codes. Due to this agent, light having the wavelength for detection among the noise fluorescence emitted from the parts other than the bar codes can be absorbed.
  • coloring agents whose maximum absorption wavelength is close to the wavelength for detection can be used.
  • the wavelength for detection is within the range of 420 and 440 nm, which is in the blue region, it is preferable to use a yellowish coloring agent which absorbs light having a wavelength of 420 to 440 nm as the second light absorbing agent.
  • the yellowish coloring agents include Kayaset Yellow 2G (trade name), which has a maximum absorption wavelength of 424 nm and half-width of absorption wavelength of 62 nm and is manufactured by Nippon Kayaku Co., Ltd.
  • reddish coloring agent which absorbs light having a wavelength of 530 to 550 nm as the second light absorbing agent.
  • reddish coloring agents include Kayaset Red B (trade name), which has a maximum absorption wavelength of 516 nm and half-width of absorption wavelength of 93 nm and is manufactured by Nippon Kayaku Co., Ltd.
  • the wavelength for detection is within the range of 610 and 630 nm, which is in the red region, it is preferable to use a bluish coloring agent which absorbs light having a wavelength of 610 to 630 nm as the second light absorbing agent.
  • Examples of the bluish coloring agents include Kayaset Blue N (trade name), which has a maximum absorption wavelength of 649 nm and half-width of absorption wavelength of 94 nm and is manufactured by Nippon Kayaku Co., Ltd., Kayaset Blue 714 (trade name), which has a maximum absorption wavelength of 639 nm and half-width of absorption wavelength of 108 nm and is manufactured by Nippon Kayaku Co., Ltd., TAP 10 (trade name), which has a maximum absorption wavelength of 604 nm and half-width of absorption wavelength of 26 nm and is manufactured by Yamada Kagaku Co., Ltd., and Daiplacoat Blue NV20 (trade name), which has a maximum absorption wavelength of 624 nm and half-width of absorption wavelength of 188 nm and is manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd.
  • One kind of the second light absorbing agent may be used alone or two or more kinds thereof may be used concomitantly.
  • the content of the second light absorbing agent in the adhesive layer 12 is preferably 0.01 to 1.5 mass parts relative to 100 mass parts of the adhesive solid content and more preferably 0.015 to 1.0 mass parts.
  • the content of the second light absorbing agent is 0.01 mass parts or more relative to 100 mass parts of the adhesive solid content, more light having the wavelength for detection among the noise fluorescence can be absorbed.
  • the content of the second light absorbing agent is 1.5 mass parts or less relative to 100 mass parts of the adhesive solid content, the coloring of the adhesive layer 12 can be prevented and the reductions in adherence of the adhesive layer 12 can also be prevented.
  • the adhesive layer 12 those which are formed by coating an adhesive composition so that the coated amount thereof after drying is 5 to 40 g/m 2 are preferable and those which are formed by coating an adhesive composition so that the coated amount thereof after drying is 10 to 30 g/m 2 are more preferable.
  • the adhesive layer 12 is one which is formed by coating an adhesive composition so that the coated amount thereof after drying is 5 g/m 2 or more, the adhesive label 10 can be reliably pasted onto postal matter.
  • the adhesive layer 12 is one which is formed by coating an adhesive composition so that the coated amount thereof after drying is 40 g/m 2 or less, there is no need to use the adhesive composition more than necessary.
  • the adhesive label 10 preferably has high transparency to visible light. Specifically, the total light transmittance of visible light is preferably 50% or more in the adhesive label 10.
  • the adhesive label 10 of the present embodiment may be a release-sheet laminated adhesive label, which is made by laminating the release sheet onto the adhesive layer 12, or may be one which is made into a rolled form by pasting the adhesive layer 12 onto the printing surface 11a of the substrate for printing 11 while rolling it.
  • a release agent onto the printing surface 11a so that the adhesive layer 12 can readily be released from the printing surface 11a of the substrate for printing 11.
  • non-silicone type release agents are preferable since they do not repel fluorescent inks.
  • the abovementioned adhesive label 10 is used by being pasted onto postal matter via the adhesive layer 12 and bar codes being printed on the printing surface 11a of the substrate for printing 11 with a fluorescent ink.
  • the ultraviolet radiation which is not absorbed by the first light absorbing agent in the adhesive layer 12 and which has reached postal matter causes the emission of the noise fluorescence due to the fluorescent substances in the postal matter or the fluorescent ink used in prints of the postal matter, and even if the noise fluorescence contains light having the wavelength for detection, light having the wavelength for detection among the noise fluorescence can be absorbed by the second light absorbing agent in the adhesive layer 12.
  • light having the wavelength for detection can selectively be detected by a sensor and bar codes can be read accurately since noise fluorescence is unlikely to be emitted, and even when it is emitted, light having the wavelength for detection among the noise fluorescence can be absorbed.
  • first and second light absorbing agents are contained in adhesive layers, it is easy to contain the first and second light absorbing agents in the adhesive label 10.
  • Fig. 2 shows the release-sheet laminated adhesive label of the present embodiment.
  • the release-sheet laminated adhesive label 1 is one which has the abovementioned adhesive label 10 and a release sheet 20, which is laminated onto the adhesive layer 12 of the adhesive label 10.
  • Examples of the release sheet 20 include those having a substrate for release sheet and release-agent layer, which is provided in the substrate for release sheet in the side facing the adhesive layer 12.
  • Examples of the substrates for release sheet include paper such as woodfree paper and glassine paper, and plastic films such as polyethyleneterephthalate films and polypropylene films.
  • an addition- or condensation-type silicone-based release agent for general purpose and compounds containing a long-chain alkyl group are used.
  • the addition-type silicone-based release agents which are highly reactive are preferably used.
  • silicone-based release agents include BY 24-4527 and SD-7220 (product names) manufactured by Dow Corning Toray Silicone Co., Ltd., and KS-3600, KS-774, and X62-2600 (product names) manufactured by Shin-Etsu Chemical Co., Ltd.
  • silicone resins include BY 24-843, SD-7292, and STIR-1404 (product names) manufactured by Dow Corning Toray Silicone Co., Ltd., and KS-3800 and X92-183 (product names) manufactured by Shin-Etsu Chemical Co., Ltd.
  • Examples of the methods to produce the release-sheet laminated adhesive label 1 include a method in which an adhesive composition in the liquid form is coated on one surface of the substrate for printing 11 and dried to form the adhesive layer 12 and the release sheet 20 is laminated onto the adhesive layer 12.
  • Examples of the methods to obtain adhesive compositions in the form of a liquid include a method in which the first and second light absorbing agents are dissolved or dispersed in adhesives of solvent type, emulsion-type, or water-type.
  • the adhesives of solvent-type are used and those which dissolve in the solvent arc used as the first and second light absorbing agents, it is possible to obtain the adhesive composition in which the first and second light absorbing agents are uniformly contained in the adhesive,
  • a comma coater As an apparatus for coating the adhesive composition in the liquid form, a comma coater, roll coater, knife coater, bar coater, air knife coater, gravure coater, curtain coater, lip coater, die coater, or the like can be used.
  • Drying methods may be air drying, or drying by hot air or infrared irradiation.
  • examples of other methods to produce the release-sheet laminated adhesive label 1 include a method in which the adhesive composition in the liquid form is coated on the release sheet 20 and dried to form the adhesive layer 12 and the substrate for printing 11 is pasted onto the adhesive layer 12.
  • the release-sheet laminated adhesive label 1 is used by releasing the release sheet 20 to expose the adhesive layer 12 and by being pasted onto postal matter via the exposed adhesive layer 12.
  • the present embodiment is an example using the abovementioned release-sheet laminated adhesive label 1.
  • the release sheet 20 of the release-sheet laminated adhesive label 1 is firstly released to expose the adhesive layer 12 and the adhesive label 10 is pasted onto postal matter via the exposed adhesive layer 12 at the central post office. Subsequently, character information such as addresses on the postal matter which are read in advance by an image reading apparatus is converted into bar codes and the bar codes are then printed on the printing surface 11a of the substrate for printing 11 of the adhesive label 10 with a fluorescent ink.
  • a fluorescent ink For the printing method in this case, for example, an ink jet printing method can be applied.
  • bar codes are read by irradiating ultraviolet radiation onto the bar codes printed on the substrate for printing 11 using a bar code reading apparatus (bar code reader) to generate fluorescence and by detecting light having the wavelength for detection in the fluorescence by a sensor.
  • a bar code reading apparatus bar code reader
  • the postal matter is sorted by an automatic sorting apparatus using the address information in the read bar codes and then delivered to local post offices.
  • the postal matter is sorted thoroughly and delivered by reading the bar codes as described above at the local post offices, which received the postal matter.
  • the adhesive label 10 is not required after the sorting, it may be removed from postal matter.
  • light having the wavelength for detection can selectively be detected by a sensor when ultraviolet radiation is irradiated in order to read bar codes, and thus the bar codes can be read accurately since the abovementioned adhesive label 10 is used.
  • the present invention is not limited to the abovementioned embodiment.
  • the first and second light absorbing agents are only contained in the adhesive layer 12 in the abovementioned embodiment, the first and second light absorbing agents may be contained in any parts of an adhesive label.
  • both the first and second light absorbing agents may be only contained in the substrate for printing 11 or one of the two light absorbing agents may be contained in the adhesive layer 12 while the other may be contained in the substrate for printing 11.
  • both the first and second light absorbing agents may be contained in both the substrate for printing 11 and adhesive layer 12.
  • an undercoat layer for filling may be provided between the substrate for printing 11 and adhesive layer 12.
  • adherends to which the labels are pasted, are postal matter in the abovementioned embodiment, the present invention is not limited to them and the adherends may be documents, articles, or packages thereof.
  • the information printed on the printing surface 11a of the substrate for printing 11 is bar codes in the abovementioned embodiment, the information may be other than bar codes such as characters, patterns, or the like.
  • excitation light is ultraviolet radiation in the abovementioned embodiment
  • excitation light having a wavelength outside the ultraviolet region may be used. In that case, it is necessary to select the first light absorbing agent depending on excitation light.
  • an oil-soluble dye (Kayaset Blue 714 (trade name) manufactured by Nippon Kayaku Co., Ltd.) were added as the second light absorbing agent relative to 100 mass parts of acrylic adhesive solid content and the mixture was sufficiently stirred to prepare an adhesive composition (1).
  • the adhesive composition (1) was coated with a comma coater on glassine-paper type release paper (manufactured by Oji Tac Co., Ltd.) so that the coated amount thereof after drying was 15 g/m 2 , and then was dried to form an adhesive layer. Thereafter, Dreep W 50.4 (manufactured by Oji Specialty paper Co., Ltd.), which is a substrate for printing, was pasted onto the adhesive layer to obtain a release-sheet laminated adhesive label.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that Classico Tracing 35.5 (trade name) manufactured by Mitsubishi Paper Mills Co., Ltd. was used as the substrate for printing.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that the adhesive composition (1) was coated so that the coated amount thereof after drying was 40 g/m 2 .
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that an adhesive composition (2), which was prepared by adding 0.02 mass parts of an oil-soluble dye (TAP 10 (trade name) manufactured by Yamada Kagaku Co., Ltd.) as the second Light absorbing agent relative to 100 mass parts of acrylic adhesive solid content, was used.
  • TAP 10 oil-soluble dye manufactured by Yamada Kagaku Co., Ltd.
  • a release-sheet laminated adhesive label was obtained as in Example 4 except that 0.1 mass parts of the oil-soluble dye (TAP 10 (trade name) manufactured by Yamada Kagaku Co., Ltd.) were added relative to 100 mass parts of acrylic adhesive solid content.
  • TEP 10 oil-soluble dye manufactured by Yamada Kagaku Co., Ltd.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that an adhesive composition (3), which was prepared by adding 0.6 mass parts of a pigment dispersion (Daiplacoat Blue NV20 (trade name) manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd.) as the second light absorbing agent relative to 100 mass parts of acrylic adhesive solid content, was used.
  • a pigment dispersion (Daiplacoat Blue NV20 (trade name) manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd.)
  • the adhesive composition (4) was coated with a comma coater on glassine-paper type release paper (manufactured by Oji Tac Co., Ltd.) so that the coated amount thereof after drying was 15 g/m 2 , and then was dried to form an adhesive layer. Thereafter, Classico Tracing 41.0 (trade name) manufactured by Mitsubishi Paper Mills Co., Ltd., which was a substrate for printing, was pasted onto the adhesive layer to obtain a release-sheet laminated adhesive label.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that an adhesive composition (5), which was prepared by adding 0.05 mass parts of an oil-soluble dye (Kayaset Red B (trade name) manufactured by Nippon Kayaku Co., Ltd.) as the second light absorbing agent relative to 100 mass parts of acrylic adhesive solid content, was used.
  • an adhesive composition (5) which was prepared by adding 0.05 mass parts of an oil-soluble dye (Kayaset Red B (trade name) manufactured by Nippon Kayaku Co., Ltd.) as the second light absorbing agent relative to 100 mass parts of acrylic adhesive solid content, was used.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that 2.0 mass parts of the second light absorbing agent were added relative to 100 mass parts of acrylic adhesive solid content.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that paper for labeling 35 (manufactured by Oji Specialty paper Co., Ltd.) was used as the substrate for printing.
  • gas phase method silica (Aerosil 300 (product name) manufactured by NipponAerosil Co., Ltd., average primary-particle diameter: 7 nm, specific surface area measured by the BET method: 300 m 2 /g)
  • 50 mass parts of 20 mass% aqueous solution of 50 mol% methoxycarbonyl-modified polyallylamine hydrochloride (mass average molecular weight: approximately 60 thousand)
  • 850 mass parts of ion-exchanged water were mixed.
  • the obtained mixture was dispersed by a stirring device and then treated using the Nanomizer, which is a wet-type ultra-atomization device.
  • the coating liquid for forming the ink accepting layer was coated with a wire bar onto one surface of a translucent substrate (Dreep W (product name) manufactured by Oji Specialty paper Co., Ltd., 50.4 g/m 2 ) so that the dry mass thereof was 10 g/m 2 , and dried to form an ink accepting layer on the printing-surface side obtaining a substrate for printing.
  • a translucent substrate Dreep W (product name) manufactured by Oji Specialty paper Co., Ltd., 50.4 g/m 2
  • An adhesive label was obtained as in Example 1 except that this substrate for printing having an ink accepting layer on the printing-surface side was used,
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that the first light absorbing agent was not added.
  • a release-sheet laminated adhesive label was obtained as in Example 1 except that the second light absorbing agent was not added.
  • bar codes were printed in advance on a brown envelope (OK Kraft (product name) manufactured by Oji paper Co., Ltd., 85 g/m 2 ), which was the adherend to which the label was pasted, with a fluorescent ink (manufactured by Video Jet Co., Ltd.), which was the same fluorescent ink as that used at the time when printing bar codes on an adhesive label.
  • a brown envelope OK Kraft (product name) manufactured by Oji paper Co., Ltd., 85 g/m 2
  • a fluorescent ink manufactured by Video Jet Co., Ltd.
  • the release sheet was released from the release-sheet laminated adhesive label to expose the adhesive layer and the adhesive label was pasted onto the bar-code printed part on the brown envelope via the exposed adhesive layer.
  • bar codes were printed using an ink jet printer (manufactured by Video Jet Co., Ltd.) on the printing surface of the adhesive label with a fluorescent ink.
  • Example 1 In Examples 1 to 9, 11, and Comparative Examples 1 and 2, where substrates for printing which had high total light transmittance of visible light were used (especially in Example 2), the total light transmittance of visible light of adhesive labels was also high and the visibility of the characters on woodfree paper was high. Moreover, in Example 11, ink absorbability and bleeding prevention at the time of printing were excellent compared to those in other Examples and Comparative Examples.
  • Example 10 where the substrate for printing which had low total light transmittance of visible light was used, the total light transmittance of visible light of the adhesive label was also low and the visibility of the characters on the woodfree paper was low.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Printing Methods (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
EP07106580A 2006-04-24 2007-04-20 Klebeetikett, Schichtklebeetikett mit Abziehschicht und Informationsleseverfahren Withdrawn EP1850308A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006119211A JP2007292932A (ja) 2006-04-24 2006-04-24 粘着ラベル、剥離シート付き粘着ラベルおよび情報読み取り方法

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EP1850308A2 true EP1850308A2 (de) 2007-10-31
EP1850308A3 EP1850308A3 (de) 2009-08-05

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Cited By (2)

* Cited by examiner, † Cited by third party
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EP3496076A1 (de) * 2017-12-08 2019-06-12 UPM Raflatac Oy Versiegeln einer verpackung
EP3591642A1 (de) * 2018-07-02 2020-01-08 UPM Raflatac Oy Siegeletikett

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6424013B2 (ja) * 2014-04-17 2018-11-14 小林クリエイト株式会社 偽造防止帳票
JP2018030936A (ja) * 2016-08-24 2018-03-01 デンカ株式会社 ポリ塩化ビニル系粘着テープまたは粘着シート

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH089221B2 (ja) * 1991-05-23 1996-01-31 シンロイヒ株式会社 蛍光シートおよびその製造方法
GB2300596B (en) * 1995-05-10 1998-11-04 Portals Ltd Composite material having fluorescent features
JP2001222225A (ja) * 2000-02-07 2001-08-17 Dainippon Printing Co Ltd 懸賞用応募ラベルと応募シール
US7422158B2 (en) * 2003-10-24 2008-09-09 Pitney Bowes Inc. Fluorescent hidden indicium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3496076A1 (de) * 2017-12-08 2019-06-12 UPM Raflatac Oy Versiegeln einer verpackung
US20190180649A1 (en) * 2017-12-08 2019-06-13 Upm Raflatac Oy Sealing of a package
US10934040B2 (en) 2017-12-08 2021-03-02 Upm Raflatac Oy Sealing label and method of sealing a package
EP3591642A1 (de) * 2018-07-02 2020-01-08 UPM Raflatac Oy Siegeletikett
CN110675730A (zh) * 2018-07-02 2020-01-10 Upm拉弗拉塔克公司 密封标签
US10943162B2 (en) 2018-07-02 2021-03-09 Upm Raflatac Oy Sealing label
US11429825B2 (en) * 2018-07-02 2022-08-30 Upm Raflatac Oy Sealing label

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EP1850308A3 (de) 2009-08-05

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