WO2006052951A1 - Support d'enregistrement d'image par jet d'encre - Google Patents

Support d'enregistrement d'image par jet d'encre Download PDF

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Publication number
WO2006052951A1
WO2006052951A1 PCT/US2005/040396 US2005040396W WO2006052951A1 WO 2006052951 A1 WO2006052951 A1 WO 2006052951A1 US 2005040396 W US2005040396 W US 2005040396W WO 2006052951 A1 WO2006052951 A1 WO 2006052951A1
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WO
WIPO (PCT)
Prior art keywords
ink jet
recording medium
image recording
adhesive
layer
Prior art date
Application number
PCT/US2005/040396
Other languages
English (en)
Inventor
Hironobu Ishiwatari
Yasuyuki Takeda
Original Assignee
3M Innovative Properties Company
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Filing date
Publication date
Application filed by 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Publication of WO2006052951A1 publication Critical patent/WO2006052951A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/506—Intermediate layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0269—Tapes for dressing attachment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00153—Wound bandages coloured or with decoration pattern or printing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00412—Plasters use for use with needles, tubes or catheters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants

Definitions

  • the present invention relates to an ink jet image recording medium which is made of an adhesive sheet such as medical adhesive pad or tape capable of being applied to the skin, and also which can form ink images by a so-called ink jet method.
  • Japanese Unexamined Patent Publication (Kokai) No. 8-142493 and Japanese Unexamined Patent Publication (Kokai) No. 8-207499 disclose a medical adhesive pad comprising decorative images in a pressure sensitive adhesive layer wherein the images appear to be tattooed when applied due to transfer to the skin under pressure.
  • Such a medical adhesive pad is well known as a "tattoo seal".
  • a water transfer type tattoo seal is also known.
  • the water transfer type tattoo seal uses a water-soluble paste layer. Therefore, the step of wetting the seal with water is generally required before applying to the skin.
  • the user can also form decorative ink images such as a tattoo according to users' tastes using a printer as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 11-227390 and Japanese Unexamined Patent Publication (Kokai) No. 2000- 160111.
  • a medical adhesive pad comprising decorative images on the surface of a substrate, and it becomes possible to use the medical adhesive pad as a "first-aid adhesive tape" when provided with a gauze.
  • the first-aid adhesive tape it is possible to decorate the skin while protecting the wound with the gauze when applied to the skin.
  • the first-aid adhesive tape is substantially reinforced with a substrate, thus making it possible to fix a tube to the skin.
  • the seal can be torn by rubbing with cloths or scratching with nails upon application or removal. In this case, it becomes difficult to smoothly remove the seal, thus resulting in pain. In case of low tear strength, it can be difficult to fix an absorbent cotton or tube to the skin in the hospital when it is used for purposes other than tattoo seal.
  • Ink used in an ink jet system includes dye ink and pigment ink. Ink images may be blurred with water and, especially in case of adhesive transfer, images may be blurred with sweat of users upon application. (3) Because of its substrate, images do not appear to be tattooed when aforementioned "first-aid adhesive tape" is applied to the skin. The substrate causes mechanical stimulation upon application, and therefore users may feel discomfort.
  • Fig. 1 is a schematic cross-sectional view showing the configuration of the ink jet image recording medium of the present invention.
  • Fig. 2 is a perspective view showing a state where the skin is fixed by the ink jet image recording medium of the present invention in a test on tear strength.
  • An object of the present invention is to provide an adhesive transfer type ink jet image recording medium which can be used as a tattoo seal without using a substrate, wherein blur of ink jet images due to sweat upon application or removal, has been reduced.
  • Another object of the present invention is to provide an adhesive transfer type ink jet image recording medium which can be used as a tattoo seal without using a substrate, wherein tear strength and comfort have been improved.
  • an ink jet image recording medium comprising: an adhesive layer having a thickness of 20 to 1000 ⁇ m, which contains 40 to 95% by weight of a hot melt pressure-sensitive adhesive and 5 to 60% by weight of a thermoplastic resin having a softening point within a range from 25 to 300°C; and an image receiving layer having a thickness of 15 to 50 ⁇ m, capable of receiving an ink jet printing ink, provided on the adhesive layer.
  • the adhesive layer having a predetermined thickness contains a hot melt pressure-sensitive adhesive and a thermoplastic resin having a softening point within a range from 25 to 300°C (hereinafter, also referred to as a "thermoplastic resin component”) in a predetermined ratio, and thus the adhesive layer itself can effectively retain the shape without using the substrate. That is, a predetermined ratio of a thermoplastic resin component can effectively increase the tear strength of the image recording medium. Also blur of ink images due to sweat can be prevented by adjusting the thickness of the adhesive layer to a predetermined thickness. This means that the adjustment of the thickness of the adhesive layer to a predetermined thickness prevents sweat from penetrating into the image receiving layer through the adhesive layer.
  • the ink jet image recording medium of the present invention When the ink jet image recording medium of the present invention is stretched at a temperature of 23 °C, a testing speed of 300 mrn/min, a sample width of 25 mm and an initial sample length of 50 mm, the stress at 10% tension is within a range from 0.1 to 10 N/25 mm, and the maximum stress is within a range from 0.1 to 20 N/25 mm. Therefore, the ink jet image recording medium of the present invention has excellent flexibility and toughness suited for medical use.
  • the adhesive tape of the present invention comparatively thin image receiving layer is provided on the surface on which images are formed, and a primer layer is optionally provided between the adhesive layer and the image receiving layer. Therefore, unlike a conventional adhesive tape wherein the adhesive layer is formed on the substrate, excellent flexibility and toughness of the adhesive layer are not impaired.
  • the ink jet image recording medium of the present invention it is made possible to reduce mechanical stimulation to the skin, elbow or knee of the human body, as the adherend upon application, as well as discomfort and pain or damage upon removal. Since light transmission is not impaired by the adhesive tape of the present invention, images formed on the ink receiving layer appear to be a tattoo seal.
  • the ink jet image recording medium of the present invention exhibits 30 to 1000% of elongation when maximum stress is applied.
  • the ink jet image recording medium can increase the contact area based on its extensibility. As a result, damage to the adherend can be effectively reduced upon removal from the adherend.
  • users can record favorite patterns or favorite images from a digital camera on the surface of the ink jet image recording medium of the present invention through a commercially available personal computer using a commercially available ink jet printer, and the recorded patterns and images can be applied to the skin. Users can select favorite images, easily record the favorite images on the surface of the ink jet image recording medium of the present invention, and use it as a skin decorative tape.
  • the ink jet image recording medium 1 of the present invention comprises an adhesive layer 2 and an image receiving layer 3 provided on the adhesive layer 2. Since the ink jet image recording medium 1 of the present invention is commonly used in the form of an adhesive tape or sheet, such an ink jet image recording medium is also referred to as an "adhesive tape".
  • the thickness of the adhesive layer 2 is from 20 to 1000 ⁇ m, preferably from 30 to 400 ⁇ m, and more preferably from 50 to 300 ⁇ m. When the thickness of the adhesive layer 2 is less than
  • the tear strength of the adhesive tape 1 decreases and the tap has poor nerve.
  • a thickness less than 20 ⁇ m users' sweat may penetrate into the image receiving layer (also referred to as an "ink receiving layer") and cause images to blur.
  • the thickness of the adhesive layer 2 is more than 1000 ⁇ m, the tear strength of the adhesive tape increases, however, users may feel discomfort when applied to the human body because it is too thick.
  • the thickness of the image receiving layer 3 is preferably from 15 to 50 ⁇ m, and more preferably from 15 to 30 ⁇ m.
  • the receiving layer is too thin, ink absorption capacity becomes poor when printed using an ink jet printer, and thus clear images are harder to obtain.
  • the receiving layer is too thick, the image receiving layer can not conform to the extension of the skin and may crack.
  • the adhesive layer 2 contains 40 to 95% by weight of a hot melt pressure-sensitive adhesive and 5 to 60% by weight of a thermoplastic resin having a softening point within a range from 25 to 300°C also referred to herein as "thermoplastic resin component".
  • the "softening point” (Vicat softening point) is a temperature as measured by the method defined in JIS K 7206. When the content of the thermoplastic resin component is less than 5% by weight, the adhesive layer has less tear strength and may be torn by scratching with nails or rubbing with cloths during use.
  • the adhesive layer when applied to the movable sites such as elbow and knee, the adhesive layer is preferably composed of 95 to 75% by weight of the hot melt adhesive layer and 5 to 25% by weight of the thermoplastic resin component.
  • the adhesive layer When the tape is fixed to the immovable sites such as head, breast and back as firmly as possible, the adhesive layer is preferably composed of 75 to 50% by weight of the hot melt adhesive layer and 25 to 50% by weight of the thermoplastic resin component.
  • the hot melt pressure-sensitive adhesive is selected from a hot melt acrylic pressure-sensitive adhesive, a hot melt rubber-based adhesive, or a mixture thereof.
  • the hot melt rubber-based adhesive is not specifically limited and a mixture of a commonly used synthetic rubber such as styrene-isoprene-styrene (SIS) rubber, and a tackifier such as rosin-based tackifier, can be used.
  • SIS styrene-isoprene-styrene
  • tackifier such as rosin-based tackifier
  • Examples of the other synthetic rubbers include styrene-butadiene- styrene (SBS), styrene-butadiene rubber (SBR), neoprene-butylene rubber (NBR) 5 chloroprene rubber, silicone rubber, acrylic rubber, butyl rubber, urethane rubber and ethylene-propylene rubber.
  • SBS styrene-butadiene- styrene
  • SBR styrene-butadiene rubber
  • NBR neoprene-butylene rubber
  • the hot melt acrylic adhesive for example, there can be used a copolymer of (i) at least one monoethylenically unsaturated alkyl (meth)acrylate ester, an alkyl group of which has at least 4 carbon atoms on average (hereinafter referred to as a monomer
  • monomer B At least one monoethylenically unsaturated reinforcing monomer (hereinafter referred to as a monomer B).
  • the monomer A is a monoethylenically unsaturated alkyl (meth)acrylate ester, an alkyl group of which has at least 4 carbon atoms on average (for example, alkyl acrylate or alkyl methacrylate).
  • the alkyl group of the (meth)acrylate preferably has 4 to 14 carbon atoms.
  • the alkyl group may optionally contain a hetero atom, and/or may be linear or branched. When these monomers are homopolymerized, substantially adhesive polymer having a glass transition temperature of less than about 10°C is produced.
  • Preferable (meth)acrylate monomers are represented by the following general formula:
  • R 1 is H or CH 3 wherein when R 1 is CH 3 , the (meth)acrylate monomer is a methacrylate monomer; and R is selected from a linear or branched hydrocarbon group and optionally contains one or more hetero atoms, wherein R 2 preferably has 4 to 14 carbon atoms, and more preferably 4 to 8 carbon atoms.
  • Examples of the monomer include, but are not limited to, 2-methylbutyl acrylate, isooctyl acrylate, isooctyl methacrylate, lauryl acrylate, 4-methyl-2-pentyl acrylate, isoamyl acrylate, sec-butyl acrylate, n-butyl acrylate, n-hexyl acrylate, 2- ethylhexyl acrylate, 2-ethylhexyl methacrylate, n-octyl acrylate, n-octyl methacrylate,
  • preferable (meth)acrylate which can be used as the monomer A, include isooctyl acrylate, 2-ethylhexyl acrylate, 2-methylbutyl acrylate and n-butyl acrylate.
  • the hot melt adhesive component of the adhesive layer of the present invention can be prepared by using various monomers of the class of monomer A in combination.
  • the hot melt acrylic adhesive of the adhesive layer of the present invention preferably contains the monomer A in the amount of at least 85% by weight, more preferably at least 90% by weight, and most preferably at least 95% by weight, based on the total weight of the hot melt acrylic adhesive.
  • the hot melt acrylic adhesive of the adhesive layer of the present invention contains the monomer A in the amount of 99% by weight or less, more preferably 98% by weight or less, and most preferably 96% by weight or less, based on the total weight of the hot melt acrylic adhesive.
  • the monomer B as the monoethylenically unsaturated reinforcing monomer increases the glass transition temperature of the copolymer.
  • the "reinforcing" monomer used herein increases the modulus of the adhesive, thereby increasing the strength.
  • the monomer B has a homopolymer Tg of at least about 10°C. More preferably, the monomer B is a reinforcing monoethylenically unsaturated free radical-copolymerizable (meth)acrylic monomer, such as acrylic acid, methacrylic acid, acrylamides and acrylates.
  • Examples of the monomer B include, but are not limited to, acrylamides such as acrylamide, methacrylamide, N-methylacrylamide, N- ethylacrylamide, N-methylolacrylamide, N-hydroxyethylacrylamide, acetoneacrylamide, N,N-dimethylacrylamide, N,N ⁇ diethylacrylamide, N-ethyl-N- aminoethylacrylamide, N-ethyl-N-hydroxyethylacrylamide, N,N-dimethylolacrylarnide, N,N-dihydroxyethylacrylamide, t-butylacrylamide, dimethylaminoethylacrylamide, N- octylacrylamide and 1,1,3,3-tetramethylbutylacrylamide.
  • acrylamides such as acrylamide, methacrylamide, N-methylacrylamide, N- ethylacrylamide, N-methylolacrylamide, N-hydroxyethylacrylamide, acetoneacrylamide
  • monomer B examples include acrylic acid and methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, 2,2-(diethoxy)ethyl acrylate, hydroxyethyl acrylate or methacrylate, 2- hydroxypropyl acrylate or methacrylate, methyl methacrylate, isobutyl acrylate, n- butyl methacrylate, isobornyl acrylate, 2-(phenoxy)ethyl acrylate or methacrylate, biphenylyl acrylate, t-butylphenyl acrylate, cyclohexyl acrylate, dimethyladamanthyl acrylate, 2-naphthyl acrylate, phenyl acrylate, N-vinyl pyrrolidone and N- vinylcaprolactam.
  • Examples of preferable reinforcing monofunctional acrylic monomer which can be used as the monomer B, include acrylic acid and methacrylic acid.
  • the copolymer of the hot melt acrylic adhesive used to produce the ink jet image recording medium of the present invention can be prepared by using various reinforcing monofunctional acrylic monomers of the monomer B class in combination.
  • the hot melt acrylic adhesive of the adhesive layer of the present invention preferably contains the monomer B in the amount of at least 1% by weight, more preferably at least 2% by weight, and most preferably at least 6% by weight, based on the total weight of the hot melt acrylic adhesive.
  • the hot melt acrylic adhesive of the adhesive layer of the present invention preferably contains the monomer B in the amount of 15% by weight or less, more preferably 10% by weight or less, and most preferably 5% by weight or less, based on the total weight of the hot melt acrylic adhesive.
  • the hot melt acrylic adhesive of the adhesive layer of the present invention may contain, in addition to the above monomers A and B, other optional monomers which are copolymerizable with these monomers, for example, vinyl ester and N- vinyl lactam.
  • other monomers include, but are not limited to, polystyrene macromer, poly(methyl methacrylate) macromer, poly(methoxy-ethylene glycol) macromer, 4-
  • N,N-dimethylamide butyl acrylate
  • N-vinyllactam such as N- vinyl pyrrolidone or N- vinylcaprolactam
  • N-vinylformamide e.g., N-vinylformamide
  • optional monomer may be contained in the amount of 2% to 20% by weight based on the hot melt acrylic adhesive.
  • crosslinking agents may be used.
  • a crosslinking agent is preferably copolymerizable with the monomers A and B and optional other monomers.
  • the crosslinking agent can form chemical crosslinks (for example, covalent bonds).
  • the crosslinking agent can function by physical crosslinking involved in formation of a reinforced domain due to phase separation and/or acid-base interaction.
  • Suitable crosslinking agents are disclosed in U. S. Patent Nos. 4,379,201; 4,737,59; 5,506,279; and 4,554,324.
  • the copolymer component used in the present invention can be prepared by using various crosslinking agents in combination. Examples of such a crosslinking agents include chemical crosslinking agents, physical crosslinking agents and metal crosslinking agents.
  • Examples of the chemical crosslinking agent include thermal crosslinking agents such as aziridine.
  • An example of them is l,r-(l,3-phenylenedicarbonyl)-bis-(2- methylaziridine) which is often referred to as "bisamide".
  • Such a chemical crosslinking agent is added a solvent-based adhesive having an acid functional group after polymerization, and then it can be thermally activated during the coated adhesive in an oven.
  • Another chemical crosslinking agent is a copolymerizable monoethylenically unsaturated aromatic ketone monomer having no ortho-aromatic hydroxyl group, which is not disclosed in U. S. Patent No. 4,737,559. Specific examples thereof include para- acryloxybenzophenone, para-acryloxyethoxybenzophenone, para-N-
  • crosslinking agents include chemical crosslinking agents which may rely on a free radical to perform the crosslinking reaction.
  • reagents such as peroxides serve as a precursor of the free radical. When heated sufficiently, the precursor forms a free radical which causes the crosslinking reaction of the polymer chain.
  • crosslinking can be conducted by using radiation or high energy electromagnetic radiations such as ultraviolet ray, X-ray, ⁇ -ray or electron beam.
  • Examples of physical crosslinking agents include macromers having a high Tg with a vinyl functional group, and include polystyrene and polymethyl methacrylate as main components.
  • a vinyl-terminated polymer-crosslinking monomer is also referred to as a polymeric monomer (that is, macromer).
  • Such a monomer is well known and can be prepared by the methods described in U. S. Patent Nos. 3,786,116 and 3,842,059, as well as Y. Yamashita et al., Polymer Journal, 14,255-260 (1982) and K. Ito et al., Macromolecules, 13, 216-221 (1980).
  • Such a monomer is prepared by anion polymerization or free radical polymerization.
  • metal crosslinking agent examples include metal-containing salts or other metal-containing compounds. Suitable metals include, for example, zinc and titanium. Examples of the metal-containing compound include zinc oxide, zinc carbonate ammonium and zinc stearate.
  • crosslinking agents are used in an amount to crosslink the adhesive to give sufficient coherent strength and to impart desired final adhesion properties to the adherend.
  • the crosslinking agent is preferably used in the amount of 0.1 to 10 parts based on 100 parts of the monomer.
  • the adhesive layer may contain other additives. Alternatively, other additives may be added when a mixture of these two components is mixed or coated. Examples of the additives include plasticizers, tackifier, pigments, reinforcers, enhancers, flame retardants, antioxidants and stabilizers. These additives are added in the amount enough to obtain desired final properties.
  • fillers for example, bubbles or beads of glass or polymer (may be foamed or non-foamed), fibers, hydrophobic or hydrophilic silica, and finely ground polymer particles made of polyester, nylon and polypropylene.
  • a free radical initiator is preferably added to promote copolymerization between a (meth)acrylate and an acidic comonomer.
  • the type of the initiator to be used varies depending on the polymerization method.
  • Examples of the photoinitiator which is useful to polymerize a polymerizable monomer mixture, include benzoin ethers such as benzoin methyl ether and benzoin isopropyl ether; substituted benzoin ethers such as 2-methyl-2-hydroxypropiophenone; aromatic sulfonyl chlorides such as 2-naphthalenesulfonyl chloride; and optically active oxides such as 1 -phenyl- 1,1- ⁇ ropanedione-2-(0-ethoxycarbonyl)oxime.
  • benzoin ethers such as benzoin methyl ether and benzoin isopropyl ether
  • substituted benzoin ethers such as 2-methyl-2-hydroxypropiophenone
  • aromatic sulfonyl chlorides such as 2-naphthalenesulfonyl chloride
  • optically active oxides such as 1 -phenyl- 1,1- ⁇ ropanedione-2-(0-ethoxycarbon
  • photoinitiator is IRGACURE 651 (2,2-dimethoxy-l,2-diphenylethan-l-one, commercially available from Ciba-Geigy Corporation).
  • suitable photoinitiators include hydroperoxides such as AIBN (2,2'-azobis(isobutyronitrile)) and tert-butyl hydroperoxide; and peroxides such as benzoyl peroxide and cyclohexane peroxide.
  • the initiator commonly exists in the amount of 0.005% to 1% by weight based on the weight of the copolymerizable monomer.
  • a chain transfer agent is optionally included.
  • the chain transfer agent is a substance which controls free radical polymerization and is well known in this technical field.
  • suitable chain transfer agents include alcohols (for example, methanol, ethanol and isopropanol); halogenated hydrocarbons such as carbon tetrabromide; sulfur compounds such as laurylmercaptan, butylmercaptan, ethanethiol, isooctyl thioglycolate (IOTG), 2- ethylhexyl thioglycolate, 2-ethylhexylmercapto propionate, 2-mercaptoimidazole and 2-mercaptoethyl ether; and mixtures thereof.
  • alcohols for example, methanol, ethanol and isopropanol
  • halogenated hydrocarbons such as carbon tetrabromide
  • sulfur compounds such as laurylmercaptan, butylmercaptan, ethanethiol
  • the amount of useful chain transfer agent varies depending on the molecular weight and type of the desired chain transfer agent.
  • a non-alcohol chain transfer agent is used in the amount of 0.001 to 10 parts by weight, preferably from 0.01 to 0.5 parts by weight, and most preferably from 0.02 to 0.20 parts by weight, based on 100 parts by weight of the entire monomer. In case of the alchol- containing system, the chain transfer agent may be used in a higher amount.
  • the copolymer can be polymerized by a conventional free radical polymerization method. Examples of suitable methods include those described in U. S.
  • an alkyl (meth)acrylate monomer and an acidic monomer are charged in a four-necked reaction vessel equipped with a stirrer, a thermometer, a condenser, a dropping funnel and a Thermo watchTM temperature monitor, together with a suitable inert organic solvent and, if necessary, a free radical copolymerizable crosslinking agent.
  • a concentrated thermal free radical initiator solution is added in the dropping funnel. Then, the entire reaction vessel, the dropping funnel and their contents are purged with nitrogen to create an inert atmosphere.
  • the solution in the vessel is heated to decompose the thermal initiator, and the mixture is continuously stirred during the reaction. In general, about 98 to 99% of conversion can be obtained within about 20 hours.
  • the solvent is removed to form an adhesive which can be applied in the form of a hot melt.
  • suitable inert organic solvent may be an organic liquid which is inert to the reactant and the product, and therefore does not exert an adverse influence on the reaction. Examples of such a solvent include ethyl acetate, acetone, methyl ethyl ketone, and mixtures thereof.
  • the amount of the solvent is commonly from about 30 to 80% by weight based on the total weight of the reactant (monomer, crosslinking agent and initiator) and the solvent.
  • UV ultraviolet
  • This composition is applied on a pliable carrier web, together with a suitable photoinitiator and crosslinking agent, and then polymerized in an inert atmosphere, that is, oxygen-free atmosphere such as nitrogen atmosphere.
  • the optically active coated layer is covered with a plastic film capable of substantially transmitting ultraviolet ray and is exposed to light via the film in an air using a fluorescent lamp-type ultraviolet lamp at a total dose of about 500 mJ/cm 2 .
  • the thermoplastic resin component is composed of a thermoplastic resin which is solid at normal temperature and does not exhibit adhesion.
  • the thermoplastic resin is selected from the group consisting of polyvinyls, polyesters, polyurethanes, cellulose resins, polyamides and acetal resins.
  • polyvinyls include polyolefin and acrylic resin
  • examples of polyolefins include polyethylene (low density polyethylene, high density polyethylene and linear low density polyethylene), polypropylene, polystyrene, polyvinyl alcohol, polyvinyl acetate and ethylene-vinyl acetate copolymer
  • acrylic resins include acrylonitrile-butadiene- styrene resin, acrylonitrile-styrene resin and methyl polymethacrylate.
  • polyesters include polyethylene terephthalate and polycarbonate.
  • examples of cellulose resins include cellulose acetate. It is preferred that the thermoplastic resin component is uniformly dispersed in the hot melt adhesive component.
  • the image receiving layer provided on the adhesive layer enables formation of images by means of ink jet printing of the adhesive tape without deteriorating flexibility of the adhesive layer.
  • the thickness of the image receiving layer is from 15 to 50 ⁇ m, and preferably from 15 to 30 ⁇ m.
  • the image receiving layer can not conform to the extension of the skin and may crack when applied to the skin.
  • the image receiving layer of the image recording medium of the present invention may be formed of a single layer containing a binder polymer and a flocculant (for example, cationic polymer (or oligomer)), and preferably has a structure wherein two layers are laminated in the following manner. That is, it is an image receiving layer composed of two layers formed on the adhesive layer, and said two layers comprising a base layer containing the binder polymer, and an upper layer containing a cationic polymer (or oligomer) as a flocculant in a state wherein a portion or all of the upper layer is impregnated with the base layer so as to be localized in the vicinity of the surface of the base layer.
  • a flocculant for example, cationic polymer (or oligomer)
  • the binder of the ink receiving layer preferably contains an ion-modified polymer.
  • the flocculant is a cationic organic oligomer (cationic oligomer) having a cationic functional group in the molecule or a cationic organic polymer (cationic polymer) having a cationic functional group in the molecule.
  • the molecular weight of the cationic oligomer is intermediate between that of a low molecular weight flocculant such as water-soluble salts and that of the polymer.
  • the weight-average molecular weight of the cationic oligomer is usually from 500 to 10,000.
  • the weight-average molecular weight of the cationic polymer is usually from 10,000 to 1,000,000.
  • the cationic polymer or oligomer has at least one cationic functional group selected from the group consisting of nitrogen-containing cationic functional group, sulfonium salt (for example, -S + R 2 -X " ; wherein R is methyl or hydrogen, and X is a halogen ion) and phosphonium salt (-P + R 3 -X " ; wherein R is methyl or hydrogen, and X is a halogen ion).
  • the nitrogen-containing cationic functional group is at least one selected from the group consisting of amine salt, quaternary ammonium salt (for example, -N + R 3 -X " ; wherein R is methyl or hydrogen, and X is a halogen ion), pyridinium salt (for example, -N C 5 H 5 -X " , wherein X is a halogen ion) and polyethylenepolyamine (for example, -NH(C 2 H 4 NH) 1n H; wherein m is from 2 to 4).
  • amine salt for example, -N + R 3 -X " ; wherein R is methyl or hydrogen, and X is a halogen ion
  • pyridinium salt for example, -N C 5 H 5 -X " , wherein X is a halogen ion
  • polyethylenepolyamine for example, -NH(C 2 H 4 NH) 1n H; wherein m is from 2 to 4
  • the cationic polymer or cationic oligomer preferably has at least one cation salt functional group selected from the group consisting of sulfonium salt, phosphonium salt, quaternary ammonium salt and pyridinium salt.
  • cation salt functional groups are useful to prevent yellowing because they have ionic dissociation properties, and also exert a flocculation effect to prevent blur in the pigment ink printing with the help of a hydrophilic porous substrate.
  • the binder of the image receiving layer contains an ion-modified polymer (preferably a polymer having an anionic functional group)
  • an ion-modified polymer preferably a polymer having an anionic functional group
  • no flocculate is formed by the interaction between the binder polymer and the cationic polymer in a coating composition for forming the image receiving layer, and thus it is possible to retain a stably dispersed or dissolved state.
  • a polymer or oligomer having a quaternary ammonium salt group is particularly preferable.
  • the cationic polymer for example, there can be used polyamine, polyurethane, polyurea or polyester, with each having a cationic functional group in the molecule; or polymer having a main polymer chain composed of polyoxyalkylene ether.
  • the cationic oligomer there can be used polyamine, polyurethane, polyurea or polyester, each having a cationic functional group in the molecule; or oligomer having a main oligomer chain composed of polyoxyalkylene ether.
  • the cationic polyurethane which can be used in the present invention, can be prepared by a conventional method for synthesis of polyurethane. For example, it can be prepared by reacting polyisocyanate with a polyol mixture containing a polyol having a cationic functional group such as quaternary ammonium group.
  • the anionic functional group is a quaternary ammonium salt group
  • the cationic polyurethane can be prepared by quaternizing a precursor obtained by reacting a mixture of a compound having active hydrogen and a tertiary amino group in the molecule and a polyol with polyisocyanate. Such a reaction is conducted in the following manner:
  • a polyol having at least two active hydrogen atoms capable of reacting with an isocyanate group, (as a raw oligomer for forming the molecular main chain), and a solvent free of active hydrogen are charged.
  • the weight-average molecular weight of the polyol is usually from 300 to 5,000.
  • polyisocyanate having at least two isocyanate groups is added and heated to 60°C or higher for several hours, thereby to react with the above raw oligomer.
  • the product obtained by this reaction is cooled to 5O 0 C or lower and, after adding an amino group-containing compound (having active hydrogen and a tertiary amino group) to the product, the mixture is reacted for several hours by heating to 60°C or higher.
  • an amino group-containing compound having active hydrogen and a tertiary amino group
  • the amino group-containing compound is a diol, triol, diamine or triamine compound each having active hydrogen and a tertiary amino group in the molecule.
  • the weight-average molecular weight of these compounds is usually less than 300.
  • the urethane prepolymer thus obtained is reacted with an acid, thereby to quaternize the tertiary amino group.
  • polystylene glycol for example, there can be used polypropylene glycol, polytetramethylene glycol, polyethylene glycol, addition polymer of bisphenol
  • A-propylene oxide, addition polymer of bisphenol S -propylene oxide, adipic acid-based polyester and isophthalic acid-based polyester examples include N-methyl-N,N-diethanolamine, N-ethyl-N,N- diethanolamine, N-isobutyl-N,N-diethanolamine, triethanolamine, methyliminobispropylamine, butyliminobispropylamine and tri(2-aminoethyl)amine.
  • polyisocyanate there can be used those used to synthesis conventional polyurethane.
  • examples thereof include aliphatic diisocyanates such as tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate, dodecamethylene diisocyanate and trimethylhexamethylene diisocyanate.
  • Specific examples of the cationic polymer, which can be used in the present invention include a quaternary ammonium salt group-containing cationic polyamine such as NEOFIXTM IJ-450 which is commercially available from Nicca Chemical Co., Ltd. and a cationic polyamide resin WS SERIESTM which is commercially available from Japan PMC Corporation.
  • cationic oligomer which can be used in the present invention, include a quaternary ammonium salt group-containing cationic polyurethane NEOFIX T IJ-450 which is commercially available from Nicca Chemical Co., Ltd., and quaternary ammonium salt group-containing organic oligomers EMCOLTM CC-9, EMCOLTM CC-36 and EMCOLTM CC-42 which are commercially available from Witco Chemical Co.
  • the amount of the cationic oligomer or polymer, as the flocculant, contained in the image receiving layer is usually from 1 to 40 parts by weight, preferably from 3 to 35 parts by weight, and particularly preferably from 5 to 30 parts by weight, based on 100 parts by weight of the binder polymer.
  • the content is too small, the cohesive force decreases and a blur of ink images may occur in the pigment ink printing.
  • yellowing may occur in the dye ink printing.
  • the cationic oligomer or polymer can also be used in combination with an anionic organic oligomer.
  • the anionic organic oligomer is an oligomer which has a molecular main chain composed mainly of polyurethane, polyurea, polyester or polyoxyalkylene ether, and an anionic functional group.
  • the anionic functional group include carboxylate, sulfonate and phosphate functional groups.
  • amphoteric oligomers such as betaine and sulfobetaine oligomers can be used in combination.
  • the weight- average molecular weight of these oligomers, which can be used in combination with the cationic oligomer or polymer, is usually from 500 to 8,000.
  • the binder polymer of the image receiving layer there can be used polyurethane, polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, styrene-butadiene-acrylonitrile copolymer, polyamide, acrylic polymer and polyester.
  • an ion-modified polymer is preferable.
  • the ion- modified polymer retains the pigment or dye at the printed portion to enhance the effect of preventing blur in cooperation with the cationic oligomer or cationic polymer. From such a point of view, a combination of the ion-modified polymer and the cationic polymer is preferable.
  • the ion-modified polymer a water-dispersible one is commonly used.
  • the image receiving layer preferably contains fine inorganic powders so as to further improve ink drying properties by enhancing porosity of the image receiving layer.
  • the fine inorganic powders for example, there can be used calcium carbonate, alumina, calcined, silica (including amorphous silica), diatomaceous earth, talc, titanium oxide and barium sulfate.
  • the particle size of fine powders is usually from 0.3 to 10 ⁇ m, and preferably from 0.8 to 5 ⁇ m.
  • the amount of fine inorganic powders is from 15 to 65 parts by weight, and preferably from 25 to 55 parts by weight, based on 100 parts by weight of the binder.
  • the image receiving layer can contain other additives, for example, thermal stabilizers, ultraviolet absorbers, dispersants, antistatic agents and antioxidants.
  • the image receiving layer is formed by applying a liquid containing the cationic oligomer and the binder polymer on the surface of the adhesive layer of the present invention, followed by drying.
  • a liquid containing the cationic oligomer and the binder polymer on the surface of the adhesive layer of the present invention, followed by drying.
  • the solvent water or an alcohol is preferably used.
  • the image receiving layer can also be formed by applying a coating composition containing a flocculant such as cationic polymer, followed by drying.
  • the flocculant is a material having high film forming properties such as cationic polymer
  • a base layer containing a binder polymer for base layer is formed and then a coating composition containing the flocculant is applied on the base layer and dried to form an upper layer containing the flocculant, thus easily forming an image forming layer having a structure such that a portion or all of the upper layer is impregnated with the base layer so as to be localized in the vicinity of the surface of the base layer.
  • the flocculant is localized on the surface of the image receiving layer to which ink is applied, and can enhance the effect of the flocculant.
  • the coater for applying a coating composition for forming an image receiving layer for example, conventional coaters such as bar coater, knife coater, roll coaters and die coaters can be used.
  • concentration of the cationic polymer (or oligomer) contained in the coating composition for upper layer is usually from 0.5 to
  • the ink jet image recording medium of the present invention can also comprise a primer layer between the adhesive layer and the image receiving layer so as to improve adhesion between them.
  • the primer layer is not specifically limited as long as it imparts anchoring properties to the image receiving layer and is preferably transparent to preserve clarity of images to be formed on the image receiving layer. Specific examples include printing ink, which can be applied by a conventionally known coating method such as gravure printing or screen printing.
  • the ink of the transparent resin for example, polyurethane
  • MEDIUM manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd. can be used as the primer layer.
  • the primer layer may contain an ion-modified polymer.
  • the ion-modified polymer which can be preferably used in the present invention, is a cationically modified polymer such as cationically modified polyurethane or cationically modified polyester.
  • the image receiving layer containing such a cationically modified polymer is advantageous to improve water resistance of images formed by ink jet printing.
  • the ion-modified polymer examples include ion-modified polyurethane composed of a mixture of polyurethane having a sulfonate group in the molecule and epichlorohydrin polyamide, as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 10-181189.
  • the epichlorohydrin polyamide can be obtained, for example, by dehydration polycondensation of adipic acid and diethylenetriamine.
  • the polyurethane having a sulfonate group in the molecule can be obtained, for example, by the polymerization reaction of a first diol having a sulfonate group in the molecule, a second diol having no sulfonate group in the molecule, and diisocyanate.
  • the first diol can be obtained, for example, by ester interchange of dimethyl sodium sulfoisophthalate and diol.
  • PATERACOLTM IJ- 170 coating composition containing cationically modified polyurethane and fine inorganic powders
  • PATERACOLTM IJ-21 cationically modified polyurethane-containing coating composition which does not contain fine inorganic powders
  • the primer layer is preferably very thin so as not to deteriorate flexibility of the adhesive layer and the thickness is usually from 0.1 to 15 ⁇ m, and preferably from 0.1 to 5 ⁇ m.
  • the ink jet image recording medium of the present invention (for example, adhesive tape) can be produced, for example, by the following steps of:
  • the ink jet image recording medium can also be produced, for example, by the following steps of:
  • the ink jet image recording medium of the present invention exhibits stress of 0.1 to 10 N/25 mm at 10% tension. Furthermore, the ink jet image recording medium of the present invention exhibits maximum stress within a range from 0.1 to 20 N/25 mm, preferably from 0.1 to 15 N/25 mm, and more preferably from 0.1 to 10 N/25 mm. As a result, the ink jet image recording medium of the present invention exhibits excellent flexibility and toughness and also has suitable tear strength.
  • Maximum elongation of the ink jet image recording medium of the present invention is preferably within a range from 30 to 1000%. When the maximum elongation is less than 30%, users feel discomfort during application because the tape cannot conform to the movement of the skin when applied to the human body.
  • the tape can absorb peel stress because of poor stretchability when the tape is removed, and thus users sometimes feel pain.
  • the maximum elongation of the tape is more than 1000%, the tape is not easily remove from the adherend because the tape is too stretched, or it is not easy to handle because tapes may adhere with each other.
  • the maximum stress means maximum stress as measured by stretching samples at a temperature of 23 0 C and testing speed of 300 mm/min (sample width: 25 mm, distance between chucks: 50 mm) in accordance with the method defined in JIS-K7115 using a tensile testing machine.
  • the elongation means elongation as measured by stretching samples at a temperature of 23 0 C and testing speed of 300 mm/min (sample width: 25 mm, distance between chucks: 50 mm) in accordance with the method defined in JIS-K7115 using a tensile testing machine.
  • the hot melt adhesive obtained in (1) was uniformly kneaded with a low density polyethylene (manufactured by Japan Polyolefm Co., Ltd. under the trade name of Novatec LD) in a weight ratio of 70:30 using a twin-screw extruder at 165 0 C to obtain an adhesive mixture.
  • This mixture was applied on the sliding surface of a release paper (manufactured by Kaito Chemical Industry Co., Ltd. under the trade name of SLK-50W) at 14O 0 C in a thickness of 100 ⁇ m, and then exposed to ultraviolet ray to form an adhesive layer.
  • a transparent printing ink manufactured by Dainichiseika Color & Chemicals Mfg.
  • a coating solution for forming an image receiving layer 100 parts by weight of PATERACOLTM IJ- 170 and 13 parts by weight of NEOFIXTM IJ-450 as a flocculant, in which PATERACOLTM IJ- 170 is commercially available from Dainippon Ink and Chemicals, Incorporated as a coating agent containing a water-dispersible cationically modified polyurethane (containing about 50% by weight of silica particles) and
  • NEOFIXTM IJ-450 is commercially available from Nicca Chemical Co., Ltd. as a coating agent containing a cationic organic oligomer having a quaternary ammonium salt group in the molecule, and the amount of the flocculant component (cationic organic oligomer) in the coating composition for receiving layer was 20 parts by weight based on 100 parts by weight of the binder polymer) was applied in the dry thickness of 15 ⁇ m, followed by drying in an oven at 100 0 C for 3 minutes to obtain an ink jet image recording medium of the present invention.
  • Example 2 In the same manner as in Example 1 , except that dry thickness of the image receiving layer was controlled to 24 ⁇ m, to obtain an adhesive tape.
  • Example 4 In the same manner as in Example 1, except that dry thickness of the image receiving layer was controlled to 31 ⁇ m, to obtain an adhesive tape.
  • Example 4 In the same manner as in Example 1, except that dry thickness of the image receiving layer was controlled to 31 ⁇ m, to obtain an adhesive tape.
  • Example 2 In the same manner as in Example 1 , except that the adhesive was prepared by kneading the hot melt acrylic adhesive and the thermoplastic resin in a ratio of 82.5/17.5, to obtain an adhesive tape.
  • Example 2 In the same manner as in Example 1, except that the adhesive was prepared by kneading the hot melt acrylic adhesive and the thermoplastic resin in a ratio of 50/50, to obtain an adhesive tape.
  • Comparative Example 2 In the same manner as in Example 1 , except that the image receiving layer was not provided and the thickness of the primer layer was controlled to 8 ⁇ m, to obtain an adhesive tape.
  • Comparative Example 3 In the same manner as in Example 1 , except that the adhesive was prepared by kneading the hot melt acrylic adhesive and the thermoplastic resin in a ratio of 100/0, to obtain an adhesive tape.
  • Maximum elongation of the tape means maximum elongation as measured by stretching test samples at a temperature of 23 °C and a testing speed of 300 mrn/min (sample width: 25 mm, distance between chucks: 50 mm) in accordance with the method defined in JIS-K7115 using a tensile testing machine.
  • Maximum stress means maximum stress as measured by stretching samples at a temperature of 23°C and testing speed of 300 mm/min (sample width: 25 mm, distance between chucks: 50 mm) in accordance with the method defined in JIS-K7115 using a tensile testing machine.
  • a tape measuring 25 mm x 50 mm was applied to the arm of the healthy six persons (in Comparative Examples 4 and 5, products having a predetermined size were used) and, after 24 hours, the tape was removed. Then, persons were asked about pain and scoring was conducted in the following manner.
  • a tape measuring 25 mm x 50 mm was applied to the arm of the healthy six persons (in Comparative Examples 4 and 5, products having a predetermined size were used). Then, persons were asked about discomfort and scoring was conducted in the following manner. ++: feel no discomfort
  • ink jet image recording media obtained in the Examples and Comparative Examples, printing was actually conducted to form images using a printer. The printed images were visually observed and printability was evaluated.
  • SAFEED gastric tube catheter (SF-GTlOlOS Fr.10) manufactured by Terumo Corporation, which was cut into 10 cm using scissors
  • a tube (hereinafter referred to as a "tube"), can be firmly fixed to the skin of the arm of six healthy persons using a tape measuring 25 mm x 50 mm (in Comparative Examples 4 and 5, products having a predetermined size were used).
  • a tube 11 was placed on the skin 10 and then fixed using a tape 12 of the present invention. After fixing, it was examined whether or not the tube 11 is firmly fixed to the skin 10, by slightly shaking the end of the tube 11.
  • ++ tube is firmly fixed
  • ink jet image recording media obtained in the Examples printing was actually conducted using PX-G900 (pigment ink type) and PM-G700 (dye ink type) manufactured by Epson Co. Then, each of the printed ink jet recording media was applied to facies medialis brachii of two healthy persons. After 4 hours at the temperature of 33°C, the condition was visually observed and evaluated. As a result, printed images were not blurred with sweat.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

L'invention concerne un support d'enregistrement d'image par jet d'encre. Ledit support présente, d'une part, une couche adhésive dotée d'une épaisseur comprise entre 20 et 1000 µm qui renferme entre 50 et 95 % en poids d'un adhésif sensible à la pression thermofusible et entre 5 et 50 % en poids d'un composé de formation de film, et, d'autre part, une couche de réception d'image pourvue d'une épaisseur comprise entre 15 et 40 µm capable de recevoir une encre d'impression jet d'encre sur la couche adhésive.
PCT/US2005/040396 2004-11-09 2005-11-09 Support d'enregistrement d'image par jet d'encre WO2006052951A1 (fr)

Applications Claiming Priority (2)

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JP2004324849A JP2006130865A (ja) 2004-11-09 2004-11-09 インクジェット用画像記録媒体
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Cited By (5)

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WO2013019706A3 (fr) * 2011-08-02 2013-04-04 3M Innovative Properties Company Article graphique
WO2013019766A3 (fr) * 2011-08-02 2013-04-25 3M Innovative Properties Company Article graphique
US9308773B2 (en) 2011-08-02 2016-04-12 3M Innovative Properties Company Graphic article
US20210186652A1 (en) * 2018-09-20 2021-06-24 Toppan Printing Co., Ltd. Examination marker
EP4070734A4 (fr) * 2019-12-06 2023-01-25 Toppan Inc. Patch auxiliaire et ensemble patch de test

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JP7027162B2 (ja) * 2017-12-27 2022-03-01 キヤノン株式会社 インクジェット用記録媒体、インクジェット記録方法、及び、記録物
JP7107201B2 (ja) * 2018-12-11 2022-07-27 凸版印刷株式会社 検査用シール
JP7107200B2 (ja) * 2018-12-10 2022-07-27 凸版印刷株式会社 検査用シール
JP7183938B2 (ja) * 2019-04-25 2022-12-06 凸版印刷株式会社 検査用シール
JP7147674B2 (ja) * 2019-04-19 2022-10-05 凸版印刷株式会社 検査用シール

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JP2001252995A (ja) * 2000-03-10 2001-09-18 Bando Chem Ind Ltd インクジェット画像用貼付けシール及びその製造方法

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013019706A3 (fr) * 2011-08-02 2013-04-04 3M Innovative Properties Company Article graphique
WO2013019766A3 (fr) * 2011-08-02 2013-04-25 3M Innovative Properties Company Article graphique
CN103717405A (zh) * 2011-08-02 2014-04-09 3M创新有限公司 图形制品
US9308773B2 (en) 2011-08-02 2016-04-12 3M Innovative Properties Company Graphic article
US20210186652A1 (en) * 2018-09-20 2021-06-24 Toppan Printing Co., Ltd. Examination marker
EP4070734A4 (fr) * 2019-12-06 2023-01-25 Toppan Inc. Patch auxiliaire et ensemble patch de test

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