WO2011077048A1 - Feuille imprimable ultra lisse et recyclable et son procédé de fabrication - Google Patents
Feuille imprimable ultra lisse et recyclable et son procédé de fabrication Download PDFInfo
- Publication number
- WO2011077048A1 WO2011077048A1 PCT/FR2010/052879 FR2010052879W WO2011077048A1 WO 2011077048 A1 WO2011077048 A1 WO 2011077048A1 FR 2010052879 W FR2010052879 W FR 2010052879W WO 2011077048 A1 WO2011077048 A1 WO 2011077048A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- printable
- sheet
- face
- plastic film
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/06—Controlling the addition
- D21H23/08—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH
- D21H23/10—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH at least two kinds of compounds being added
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/66—Treating discontinuous paper, e.g. sheets, blanks, rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
- D21H23/72—Plural serial stages only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/001—Release paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
- D21H27/004—Tissue paper; Absorbent paper characterised by specific parameters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
Definitions
- the present invention relates to a printable sheet smooth or ultra smooth and recyclable, as well as its manufacturing process.
- This sheet may be used in distinct fields such as packaging, electronics, optics, or graphic arts, for example as a printing medium, in particular a photographic image.
- an ultra-smooth sheet may be made by laminating a plastic film on one side of a paper, which plastic film defines an ultra smooth surface on the paper.
- the base paper is formed of a fibrous material whose faces have a relatively high roughness, of the order of 20 ⁇ approximately, that is to say that each of its faces is formed of bumps and valleys whose height which separates them is of the order of 20 ⁇ .
- the rolling of a plastic film on one side of such a paper makes it possible to give this face a very low roughness, of the order of 1 ⁇ in the case of a film of PET (polyethylene terephthalate).
- paper is a relatively expensive material and is produced on a large scale, it is important that it be recyclable.
- a paper-based sheet ultra smooth because having a plastic film is not recyclable or is difficult to recycle, which is not ecological or economic. Indeed, during the recycling of paper-based sheets, these sheets are crushed and mixed with water in a pulper to form a paste. In the case where these sheets comprise plastic films, these films are shredded in the pulper and their plastic material pollutes the paste.
- Such an ultra smooth sheet is not printable and a printable resin must be deposited on the plastic film of the sheet for make printable.
- This technique is used in particular to produce paper-based sheets for the printing of photographic images (called resin-coated photography papers), these sheets comprising a PE film (polyethylene) and having a Bekk smoothness of the order 6000s.
- a smooth sheet may also be manufactured by depositing a coating composition on one side of a paper, which composition after drying a smooth face on the paper.
- This technique makes it possible to manufacture a smooth sheet without plastic film.
- the composition is deposited on the paper by a coating technique curtain, dragging or scraping blade, air knife, gravure printing or by rollers (s / ' ze press, press film, etc.).
- the face of the paper base, on which the coating composition is deposited comprises an alternation of hollows and bumps, the hollows being filled by the coating composition and the bumps being flattened during coating, which makes it possible to reduce the roughness of the paper.
- this technique does not make it possible to obtain a sheet as smooth as a sheet covered with a plastic film, even if this sheet is subsequently smoothed, for example by calendering.
- the method currently used to make a glossy, smooth sheet consists in depositing a coating composition on a base paper by means of a mechanical roller whose cylindrical surface is very smooth and covered with a layer of chromium.
- the Bekk smoothness of a sheet obtained by this process is of the order of 50s and is therefore less than that of a sheet comprising a plastic film (of the order of 6000s in the case of a PE film) .
- the invention is particularly intended to provide a simple, effective and economical solution to the problems of the prior art.
- a smooth sheet also called ultra smooth in the sense of the invention, the smoothness of this sheet being independent of the roughness of the paper or more generally of the base substrate used, and the sheet does not having no plastic film and is therefore at least partly recyclable, or even biodegradable.
- a printable sheet having at least one smooth face and advantageously ultra smooth, this sheet comprising a substrate, in particular of paper, of which at least one face is covered at least in part with one or more superimposed layers, the method comprising the steps of:
- a / preparing or providing a multilayer structure comprising at least, or consisting of, a preferably smooth plastic film, a release layer, and a printable layer, the release layer being interposed between the plastic film and the printable layer,
- the multilayer structure is prepared prior to the implementation of the method of manufacturing the printable sheet.
- the multilayer structure is provided for the production process of the printable sheet.
- the smooth or ultra-smooth face of the sheet is defined by a printable layer which is prepared on a plastic film called "donor", said printable layer being, at this stage, included in a multilayer structure, and then transferred on the basic substrate called "receiver".
- the smoothness of the printable layer and therefore of the sheet is induced by that of the plastic film of the multilayer structure, and therefore does not depend on that of the base substrate used.
- the invention thus makes it possible to transfer the surface state of a plastic film to any substrate.
- the invention makes it possible to manufacture a smooth or ultra-smooth sheet from any substrate, such as advantageously a rough paper and / or having a relatively large hand, for example greater than or equal to 1.10 cm 3 / g, and without including a plastic film in the sheet thus produced.
- the sheet prepared by the process according to the invention is therefore both printable and recyclable.
- printable sheet and substrate for the preparation of the printable sheet a thin element (whose thickness does not exceed 50 ⁇ ), preferably flexible and / or flexible.
- Printable sheet or layer means a sheet or layer that can be printed by any printing technique, and in particular by printing Offset, inkjet, laser, helio, flex, dry toner, liquid toner, electrophotography, lithography etc.
- a printable layer typically comprises a mixture of pigments and at least one binder, or is formed of a printable varnish based on polymer (s) of acrylic, vinyl, polyurethane, styrene, starch, polyvinyl alcohol, ethylene, or a mixture of these polymers.
- the ink is intended to be deposited on the smooth or ultra smooth free face of the printable sheet or the printable layer.
- Recyclable sheet means a sheet which is free of plastic film, for example thermoplastic or thermosetting material.
- the printing of the printable layer does not entail any structural modification thereof, and in particular a change of state or phase thereof (such as for example from a solid state to a liquid state and then back to the solid state).
- a multilayer structure of the invention prepared or provided in the context of the process according to the invention comprises, in particular, or consists of, a lower plastic film, a nonstick intermediate layer and a printable top layer.
- the release layer covers at least a portion of the top face of the plastic film
- the printable layer covers at least a portion of the top face of the release layer.
- the plastic film serves as a manufacturing support for the printable layer. This film does not survive in the final product, namely the sheet, which is therefore recyclable.
- the upper face of the film (located on the side of the printable layer) is advantageously the smoothest possible, because the surface quality of the smooth face of the sheet, defined by the printable layer, is a function of the surface quality of this face top of the plastic film. In other words, the more the plastic film of the multilayer structure is smooth and the resulting sheet is smooth.
- the plastic film is selected from a film of polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polylactic acid-based polymer (PLA), any cellulose-based polymer, and the like.
- PET polyethylene terephthalate
- PE polyethylene
- PP polypropylene
- PLA polylactic acid-based polymer
- the film has for example a thickness of the order of 12 ⁇ .
- the plastic film is free and / or is not covered with PVDF (polyvinylidene fluoride), PP (polypropylene), teflon, silica, boron nitride, chromium stearyl chlorides or any other product having anti-adhesive / non-stick properties.
- the face of the film located on the printable layer side is preferably smooth and may have a Bekk smoothness greater than 10,000s Bekk.
- the thickness, hardness and glass transition temperature of the plastic film have no or little influence on the characteristics of the printable layer. Only the smoothness, or conversely, the roughness of the plastic film has an influence on the smoothness or roughness of the printable layer. The smoother the plastic film, the smoother the printable layer. Those skilled in the art are however able to determine which characteristics of the plastic film are likely to influence the surface condition of the printable layer, and to optimize these characteristics as a function of the final smoothness that is desired for this printable layer.
- the nonstick layer of the multilayer structure is deposited on the plastic film by any technique, for example by gravure printing.
- This non-stick layer serves to limit the adhesion of the printable layer on the plastic film and to facilitate the separation and removal of the plastic film from the printable layer in step c / of the above-defined process.
- the nonstick layer does not affect or reduce the smoothness and the surface quality of the plastic film face on which this layer is deposited.
- the nonstick layer may adhere more to the plastic film than to the printable layer, so that most or all of the nonstick layer remains adhered to the plastic film as it is removed from the printable layer. However, parts or traces of this release layer may persist on the printable layer after removal of the plastic film. Alternatively, the release layer may adhere more on the printable layer than on the plastic film, and is then intended to remain at least partially on the printable layer during removal of the plastic film.
- the release layer is intended to divide substantially into two parts upon removal of the plastic film, a first portion remaining on the plastic film and a second portion remaining on the printable layer.
- the multilayer structure may comprise two non-stick layers superimposed between the plastic film and the printable layer, these two layers being intended to separate from one another during the removal of the plastic film (one of the non-stick layers remaining on the plastic film and the other non-stick layer remaining on the printable layer).
- Leaving part or all of a nonstick layer on the printable layer is particularly advantageous when the sheet is intended to be used as a support in a casting application.
- the casting application consists of extruding and casting at least one polymer (such as polyurethane (PU), polyvinyl chloride (PVC), etc.) onto a support coated with a release layer.
- This polymer may have a textured surface to give the sheet a particular appearance (eg, similar to leather).
- the fact of leaving a release layer on the sheet according to the invention avoids having to redeposit such a layer on this sheet for a casting application, and is therefore particularly advantageous in terms of cost and preparation time of the support for the application. casting application.
- the release layer has a thickness less than or equal to 5 ⁇ and preferably 1 ⁇ .
- the release layer may be composed of silicone (s), siloxane (s), polysiloxane (s) or its derivatives, Werner complex (s), such as chromium stearyl chlorides, or polyethylene waxes, propylene, polyurethane, polyamide, polytetrafluoroethylene, etc.
- the nonstick layer comprises no
- the printable layer of the multilayer structure may be selected from a printable varnish, a paper coating, etc.
- the term "printable varnish” means a substance based on acrylic polymer, polyurethane, polymethyl methacrylate, styrene butadiene, vinyl acetate, polyamide, nitrocellulose or any other cellulose, polyvinyl alcohol, polyvinyl alcohol, polyvinyl alcohol, starch, etc. This substance is usually deposited in liquid form and solidified by drying / heating or by UV or electron radiation.
- paper coating means a composition comprising a binder and pigments.
- the binder may be based on acrylic, polyurethane, polymethyl methacrylate, styrene butadiene, vinyl acetate, polyamide, nitrocellulose or any other cellulose, polyvinyl alcohol, starch, or a mixture of these. this.
- the pigments may be chosen from calcium carbonates, kaolins, titanium dioxide, talc, silicas, mica, and pearlescent particles, plastic pigments (polystyrene (PS), polyurethane (PU), etc.), and their mixtures.
- the level of binder relative to the pigments is between 5 and 50%, and preferably between 8 and 25% by dry weight.
- Pigments are generally in the majority of the binder in a paper coating, to create porosities that improve ink absorption. On the contrary, in a heat transfer layer, the binders are in the majority with respect to the pigments because the objective is not to have surface porosity.
- the plastic used in the printable layer (as a binder and / or pigments) is easily fragmentable and does not pollute the pulp when recycled. On the contrary, the plastic films keep a cohesion and clog the filters during the resuspension of the pulp.
- Water-soluble binders such as starch, polyvinyl alcohol (PVA), etc. are particularly advantageous in this regard because they disperse in water during recycling.
- the paper coating may further comprise a dispersant and / or a rheological modifier and / or a colorant and / or a surface or spreading agent and / or a conductive additive.
- This conductive additive can be used to reduce the surface resistivity of the sheet.
- the printable layer is free of antiblocking agent and / or of product capable of reducing the surface energy of the layer, such as a silicone material or the like, PVDF, PP, Teflon, silica , boron nitride, etc.
- This type of agent or product may be required for thermal transfer layer printing, particularly to prevent paper from adhering to the printer ribbon.
- the printable layer according to the invention may therefore not be printable by thermal transfer.
- the printable layer may be formed of several sub-layers superimposed on each other, each sub-layer being printable and being selected from the aforementioned types (printable varnish, paper coating, etc.).
- the printable layer may have a thickness less than or equal to 30 ⁇ , preferably less than or equal to 15 ⁇ , and more preferably less than or equal to 10 ⁇ . Its grammage is advantageously less than or equal to 30 g / m 2 , preferably less than or equal to 15 g / m 2 , and more preferably less than or equal to 10 g / m 2 .
- the printable layer may for example have a thickness and a grammage that are less than or equal to the following combined values: 10 ⁇ and 10g / m 2 , 3 ⁇ and 10g / m 2 , 2 ⁇ and 10g / m 2 , 5 ⁇ and 5g / m 2 , 3 ⁇ and 5g / m 2 , 2 ⁇ and 5g / m 2 , 5 ⁇ and 2g / m 2 , 3 ⁇ and 2g / m 2 , or 2 ⁇ and 2g / m 2 .
- the printable layer can be deposited on the release layer by any technique, for example by gravure printing.
- the printable layer may be deposited on the nonstick layer in the liquid or semi-liquid state and then be solidified by drying, heating, or by UV or electronic radiation. After solidification and / or drying, the printable layer, which is in contact with the smooth side of the plastic film via the release layer, has a smooth face, located on the side of the plastic film.
- the printable layer is thus dried and / or solidified before it is transferred onto the substrate, in particular so as not to modify the surface state of this layer conferred by the plastic film.
- the multilayer structure is prepared prior to the transfer of the printable layer on the substrate, and the printable layer is in the solid state and / or dry during its transfer on the substrate, that is to say in steps b and cl of the process according to the invention.
- the surface state of the printable layer is thus created during the preparation of the multilayer structure.
- the manufacture of the printable layer is therefore performed independently of that of the base substrate. This allows in particular to implement the process with standard industrial tools, which allows optimal production speeds.
- the smooth face of the sheet may have a Bekk smoothness greater than about 900 or 1000s, preferably greater than 2000s, and more preferably greater than 5000s.
- the term "smooth or ultra-smooth face” is understood to mean a face having a Bekk smoothness greater than about 900 or 1000s, advantageously greater than 2000s, and more preferably greater than 5000s.
- This smooth face may have a gloss of greater than 70%, and preferably greater than 80%, this brightness being for example measured at 75 according to the TAPPI® T480 om-92 method.
- This gloss may be similar to or even greater than that of a photographic paper of the resin-coated type, comprising a plastic film.
- the multilayer structure may comprise at least one additional layer deposited on the printable layer, on the opposite side to the plastic film, the free face of this additional layer or of the layer the furthest from the plastic film being intended, in step b /, to be glued and applied against the aforementioned face of the substrate.
- the additional layer or layers may be functional or non-functional. They may for example be insulating (dielectric) or form a barrier (to gases, for example oxygen, liquids, for example water, grease, etc.).
- the multilayer structure comprises a single additional layer
- it is deposited on the upper face of the printable layer, that is to say on the face of the printable layer, located on the opposite side to the plastic film of the multilayer structure.
- This additional layer can be of any kind, and is therefore not necessarily printable.
- these additional layers are superimposed on each other and deposited on the aforementioned upper face of the printable layer.
- the technique or techniques used to deposit the additional layer or layers on the printable layer may be of the aforementioned types, or of any other type.
- the multilayer structure can therefore comprise in addition to the three aforementioned elements (a plastic film, a release layer, and a printable layer), one or more additional layers, which are printable or not, on the printable layer (on the opposite side to the plastic film ).
- the multilayer structure may further comprise a layer or film of glue covering the layer furthest from the plastic film (i.e., the printable layer or the or an additional layer).
- Step b / of the method according to the invention consists in gluing the face of the substrate intended to receive the printable layer, or the face of the multilayer structure, located on the opposite side to the plastic film, and to apply these faces against each other. the other, so as to fix them.
- the substrate may be selected from paper, tracing paper, card stock, and coated or precoated paper.
- the paper may have a relatively large hand greater than or equal to 1, 10cm 3 / g, preferably greater than or equal to 1.2 cm 3 / g, more preferably greater than or equal to 1.3 cm 3 / g, more particularly greater than or equal to 1.4 cm 3 / g, and even more particularly greater than or equal to 1.5 cm 3; /boy Wut.
- the method according to the invention makes it possible to produce a sheet having both a large hand and a smoothing, which was not possible with the prior art. It was indeed not possible in the prior art to make a sheet with a large hand and a high surface quality.
- a substrate having a large hand can be formed of an inexpensive material.
- the pulp used may comprise cellulosic fibers, a binder, and a small proportion of fillers and / or adjuvants, such as starch.
- the process according to the invention results in a slight decrease of about 2 to 5% in the hand of the paper substrate.
- a smooth or ultra smooth sheet with a large hand made with the method according to the invention, has good printability and low basis weight, which allows for lightweight packaging but having a relatively high rigidity.
- step b1 of the method the face to be coated with the substrate or the free face of the printable layer or of an additional layer of the multilayer structure is glued by means of a suitable glue.
- the two aforementioned faces of the substrate and of the multilayer structure are glued simultaneously, or one after the other.
- Sizing consists in depositing a layer of adhesive on the above-mentioned face or faces by any technique, such as, for example, gravure printing.
- the glue may be of the thermal, non-thermal type, by UV crosslinking or by chemical reaction.
- the adhesive may be deposited on the or each of the aforementioned surfaces in liquid or non-liquid form (in the case for example of a thermoadhesive film).
- This glue is for example chosen from the following polymers: acrylic, polyurethane, polymethyl methacrylate, styrene butadiene, vinyl acetate, polyamide, nitrocellulose or any other cellulose, polyvinyl alcohol or starch.
- the or each deposited adhesive layer may have a thickness less than or equal to 10 ⁇ m, and preferably less than or equal to 3 ⁇ m.
- the adhesive is deposited on the aforementioned face of the multilayer structure during the preparation of this structure. This glue is then part of the entire multilayer structure.
- the adhesive may be formed by a heat-activatable adhesive layer, this layer being activated by heating during the application of the multilayer structure on the substrate (receiver).
- the nature of the glue and the gluing process can have a significant influence on the final surface state of the paper. It is for example important that the removal of the glue is uniform and avoid the formation of cavities between the paper and the printable layer.
- the removal of the adhesive is preferably homogeneous to avoid excess and / or lack of adhesive in places, which would result in a final sheet having surface roughness.
- the glue spreads perfectly on the support (film or paper) having an adequate surface tension and rheology.
- the method of coating the glue can also be important. Coating modes that generate the least possible heterogeneity of deposit, such as gravure printing (reverse roll or kiss coating) are preferred.
- the deposit is preferably chosen to fill the pores or surface irregularities of the paper as much as possible. For example, when a paper has an average surface roughness (for example Sa) of approximately 20 ⁇ m, an adhesive removal having a thickness of at least 10 ⁇ is preferable for filling the pores.
- the deposition of glue is preferably performed on the paper when the latter is too rough. If the deposit on the paper is insufficient, cavities are formed between the surface of the paper and the printable layer. When printing, these cavities go become points of fragility of the paper which can then be sinking, if one exerts a pressure, or tear, if one exerts a traction.
- the thickness of glue deposited on the paper and / or the printable layer is equal to at least half of the average surface roughness (for example Ra or Sa) of the paper.
- the adhesive is deposited on at least one side of the substrate in step b /, and the thickness of the deposited adhesive layer is at least equal to half the average roughness of the substrate. the face of the substrate, and is preferably equal to this average roughness.
- the adhesive can be aqueous-based, solvent-free, solvent-free, two-component or monocomponent.
- the adhesive makes it possible to fix the printable layer (or an additional layer) on the substrate and, if necessary, to compensate for the surface irregularities of the substrate.
- the glue fills in particular the hollows of the face to be coated with the substrate and thus makes it possible to smooth this face, without however modifying the characteristics of the substrate, such as its hand.
- Step b / of the method then consists in applying the aforementioned face of the substrate to the aforementioned face of the multilayer structure, so as to laminate or laminate them.
- the printable layer is then sandwiched between on the one hand the substrate and the glue (and optionally one or more additional layers), on one side, and on the other hand the plastic film and the non-stick layer, of the 'other side.
- the application of the substrate to the multilayer structure is carried out hot, at a given temperature, which is for example between 50 and 200 ° C. about.
- the application and bonding of the substrate to the multilayer structure can be performed at room temperature.
- a slight pressure may be necessary to ensure good adhesion of the printable layer on the substrate, through the glue.
- the temperature and / or the pressure used during the application and the gluing must not, however, modify the characteristics of the printable layer, and in particular the surface state of its face located on the side of the plastic film.
- the printable layer should not be softened by the application of a high temperature, as this could cause a change and / or a decrease in the surface quality of its face, located on the side of the plastic film.
- the step c1 of the method then consists in removing the plastic film from the printable layer and from the substrate, so that the printable layer (and optionally the aforementioned additional layer or layers of the multilayer structure) remain on the substrate.
- the printable layer, and if necessary the additional layer or layers, are therefore transferred from the plastic film called donor, of the multilayer structure, to the substrate called the receiver.
- the release layer can remain on the plastic film and is then removed from the printable layer, during removal of the plastic film.
- the face of the printable layer, which was located on the side of the plastic film in the multilayer structure, is thus exposed, this face defining the smooth face of the sheet.
- Transfer of the printable layer of the multilayer structure to the substrate, at steps b1 and c1 of the method, can be carried out as follows, when the substrate and the multilayer structure are in the form of continuous strips.
- the rolling or lamination of the multilayer structure and the substrate can be achieved by passing these two elements between two parallel and adjacent mechanical rollers rotating in opposite directions.
- the thickness of the product obtained is in particular a function of the distance between the rollers.
- the method may further consist in that, before step b /, the aforementioned face of the substrate is precoated with at least one smoothing layer comprising one or more thermoplastic polymers (such as at least one polystyrene, one polyurethane, one acrylic, etc.) or a mixture of pigments (such as kaolins, calcium carbonates, talc, titanium dioxide, etc., and mixtures thereof) and at least one binder (such as acrylic, polyurethane, polymethyl methacrylate, styrene butadiene, vinyl acetate, polyamide, nitrocellulose or any other cellulose, starch or PVA).
- thermoplastic polymers such as at least one polystyrene, one polyurethane, one acrylic, etc.
- a mixture of pigments such as kaolins, calcium carbonates, talc, titanium dioxide, etc., and mixtures thereof
- binder such as acrylic, polyurethane, polymethyl methacrylate, styrene butadiene, vinyl
- This precoated surface of the substrate may also be calendered, before step b /, to increase its smoothness.
- the method according to the invention may comprise an additional step of printing the sheet with an ink having electrical and / or optical properties.
- the present invention further relates to a process for preparing a multilayer structure comprising at least or consisting of a plastic film, a release layer, and a printable layer, the release layer being interposed between the plastic film and the printable layer.
- the present invention also relates to a process for printing a sheet prepared by the method described above, this process comprising a step of printing the sheet without modifying the state of its printable layer, ie without softening or melting this layer during printing.
- the sheet is for example printed by offset, inkjet, laser, gravure, flex, dry toner, liquid toner, electrophotography, lithography, etc.
- the present invention furthermore relates to a method for producing a casting sheet having at least one smooth surface, said sheet comprising a substrate, in particular of paper, at least one surface of which is covered at least in part with a layer or a plurality of superposed layers, the process comprising the steps of: a / preparing or providing a multilayer structure comprising at least, or consisting of, a plastic film, a release layer, and a casting application layer, the release layer being interposed therebetween between the plastic film and the layer for casting application,
- the layer for casting application is for example a layer of PVA.
- the casting application layer may have anti-adhesive properties.
- the present invention also relates to a printable sheet having at least one smooth face, and advantageously ultra smooth, this sheet comprising a substrate, in particular of paper, of which at least one face is covered at least in part by one or more layers, of which a printable layer defining said smooth or ultra-smooth face, characterized in that this smooth or ultra-smooth face has a Bekk smoothness greater than 900s or greater than about 1000s, preferably greater than 2000s, and more preferably greater than 5000s.
- the smooth or ultra-smooth face of the sheet may have a gloss of greater than 70%, and preferably greater than 80%, this brightness being measured, for example, at 75 ° according to the TAPPI T480 om-92 method.
- the printable layer of the sheet may have a thickness less than or equal to 30 ⁇ m, preferably less than or equal to 15 ⁇ m, and more preferably less than or equal to 10 ⁇ .
- the grammage of the printable layer may be less than or equal to 30 g / m 2 , preferably less than or equal to 15 g / m 2 , and more preferably less than or equal to 10 g / m 2 .
- the printable layer may for example have a thickness and a grammage that are less than or equal to the following combined values: 10 ⁇ and 10g / m 2 , 3 ⁇ and 10g / m 2 , 2 ⁇ and 10g / m 2 , 5 ⁇ and 5g / m 2 , 3 ⁇ and 3g / m 2 , 2 ⁇ and 5g / m 2 , 5 ⁇ and 2g / m 2 , 3 ⁇ m and 2g / m 2 , or 2 ⁇ m and 2g / m 2 .
- the present invention also relates to the use of a printable sheet as described above, for the production of an electronic and / or optical component, this sheet being printed by means of an ink having electrical properties and / or optics.
- the sheet according to the invention can be compatible with electronic organic inks for electronic applications, such as for example the realization of RFID (Radio Frequency IDentification) chips, display or detection systems, etc., directly on the sheet.
- RFID Radio Frequency IDentification
- an RFID chip could be made on a sheet formed of a polyethylene terephthalate (PET) plastic film.
- PET polyethylene terephthalate
- this plastic film has a relatively low mechanical strength and temperature, which limits the possible applications of the chip and prevents printing of the film with inks at relatively high temperatures.
- the PET film is not recyclable in a simple way.
- the substrate of the sheet according to the invention is made of paper, this sheet has a better mechanical strength and at high temperatures.
- a sheet printed with an ink having electrical properties advantageously comprises a flexible substrate and a printable layer with little or no electrically conductive effect.
- This type of sheet can be used to produce thin film organic transistors using conductive or semiconducting organic inks.
- the sheet according to the invention can also be used for producing optical components, such as waveguides, holographic patterns, etc.
- the process defined above can comprise, before step a /, a preliminary step consisting in producing, for example by etching, recessed and / or embossed patterns on the face of the plastic film intended receiving the release layer and the printable layer, the printable layer being adapted to conform to the shape of these patterns so as to include a print of the aforementioned side of the plastic film.
- the transfer of the surface condition of the film to the printable layer comprises both a transfer of the smoothness and patterns of the plastic film.
- the patterns transferred onto the printable layer themselves have surfaces and / or walls having a smooth appearance and being precisely defined. This method is then particularly advantageous for the production of optical components of the aforementioned types.
- the present invention finally relates to the use of a printable sheet as described above, for the printing of a photographic image, for the production of a package, and / or for a casting application.
- FIG. 1 very schematically represents steps of the method according to the invention for manufacturing a smooth or ultra smooth printable sheet
- FIG. 2 very schematically represents an alternative embodiment of the method according to the invention
- FIGS. 3 and 4 show very schematically means for implementing the transfer step of the method according to the invention
- FIGS. 5 and 6 are images obtained by a scanning electron microscope (SEM) of a face of a base paper and a face of a smooth or ultra-smooth sheet obtained by the process according to the invention; .
- SEM scanning electron microscope
- Figure 1 shows schematically steps a /, bl and cl of the method according to the invention for manufacturing a printable sheet smooth or ultra smooth 10 and fully recyclable.
- Step a / of the process consists in preparing a multilayer structure 12 comprising a lower plastic film 14, a nonstick interlayer 16 and a printable top layer 18.
- the preparation of this structure 12 can be carried out in one or more successive steps.
- the nonstick layer 16 and the printable layer 18 can be simultaneously deposited on the plastic film 14, for example by a curtain coating technique.
- the release layer 16 is deposited on the plastic film 14, then the printable layer 18 is deposited on the release layer.
- the surface quality of the upper face 20 of the plastic film 14 is transmitted to the underside 22 of the printable layer 18 (via the release layer 16).
- the surface characteristics of the face 22 of the printable layer are therefore defined by those of the face 20 of the plastic film 14.
- the roughness of films and papers were tested using a device measuring the topography type ALTISURF 500 ALTIMET company.
- the first film tested has a roughness (for example Sa) of 1 ⁇ .
- This film was used to transfer a printable layer to Bristol® paper from Arjowiggins.
- the measured roughness of this printable layer is 1.1 m.
- the second film has a roughness of ⁇ , ⁇ .
- This film was used to transfer a printable layer to another Bristol® paper.
- the measured roughness of this printable layer was 0.7 ⁇ .
- the roughness (or the surface condition) of the film has therefore been transferred from the films to the printable layers.
- the surface characteristics of the face 22 are fixed and are not intended to be modified during the other steps of the method, and in particular the transfer of the printable layer 18 onto a substrate 24 , such as paper, to be coated.
- the printable layer 18 may be formed of a printable resin or varnish or a papermaking coating comprising a binder and pigments.
- the printable layer may comprise two or more sub-layers which are selected from a printable varnish and a paper coating.
- the printable varnish is located above or below the paper coating, so that the underside 22 above of the printable layer is defined by printable varnish or paper coating.
- the step b1 of the process consists in depositing a layer or a film of adhesive 26 on the upper face 28 of the printable layer 18 or on the lower face 30 to be coated on the substrate 24, or even on these two faces 28, 30, then on applying these faces 28, 30 against each other to laminate or laminate the multilayer structure 12 and the substrate 24, and thus form a rolled or laminated product 32.
- the step c1 of the method consists in removing the plastic film 14 and the nonstick layer 16 from the printable layer 18, so that only this layer 18 remains (with the adhesive 26) on the substrate 24.
- steps b / and c / can be performed simultaneously or one after the other.
- the adhesive 26 is advantageously in the dry state and / or solidified during the removal of the plastic film 14.
- step c1 the face 22 of the printable layer 18 is exposed, this face being smooth or ultra smooth. A portion of the release layer 16 may, however, remain on the face 22 of the printable layer 18 after removal of the plastic film.
- the layer 18 is printable by any appropriate technique, the ink being intended to be deposited on the smooth or ultra smooth face 22 of the sheet 10.
- the substrate 24 may be formed of a coated or precoated paper, that is to say a paper on one side of which a layer or precoat 33 is deposited, the latter comprising one or more thermoplastic polymers or a mixture of pigments and binder.
- This layer or precoat 33 is intended to be deposited on the aforementioned face 30 of the substrate, and is advantageously smoothed by calendering. It is then intended to be glued on the face 28 of the printable layer 18.
- FIG. 2 represents an alternative embodiment of the method according to the invention, and differs from the method previously described with reference to FIG. 1, in particular in that the multilayer structure 12 'furthermore comprises at least one additional layer 34 deposited on the face upper 28 of the printable layer 18.
- Additional superimposed layers 34 may be deposited (simultaneously or successively) on the face 28 of the printable layer 18.
- Each of the additional layers 34 may be printable or non-printable.
- step b / the lower face 30 of the substrate 24 or the free upper face 36 of the additional layer 34 (furthest from the plastic film, in the case where the structure 12 'comprises several additional layers) is covered with 26.
- these two faces 30, 36 are covered with glue 26.
- step c / the multilayer structure 12 'and the substrate 24 are laminated or laminated, so as to form a rolled or laminated product 32', then the plastic film 14 and the release layer are removed, so as to to bare the smooth or ultra smooth face 22 of the printable layer 18 of the sheet 10 '.
- the sheet of FIG. 2 may comprise a substrate 24 precoated on its face 30, in order to increase its smoothness.
- the precoat 33 is of the same type as that described with reference to FIG.
- Figures 3 and 4 show schematically means for implementing the c / transfer step of the method according to the invention.
- a first roll 40 is provided for driving a continuous strip of the multilayer structure 12 (formed of a plastic film 14, a non-stick layer 16 and a printable layer 18 - and optionally layer (s) additional 34).
- a second roller 42 parallel and adjacent to the first roller 40, is provided for driving a continuous strip of the substrate 24.
- rollers 40, 42 rotate in opposite directions and are at a small distance from each other, the multilayer structure 12 and the substrate 24 being forced to pass between these rollers and being applied at a given pressure against each other. other, to ensure their rolling or lamination.
- the adhesive 26 may be deposited on the multilayer structure 12 and / or the substrate 24, as indicated in the foregoing, prior to this lamination step, or during this lamination step. In the latter case, the glue 26 may be injected between the structure 12 and the substrate, prior to their passage between the rollers, as is schematically represented by the double arrow in FIG.
- a third roller 44 drives in one direction the sheet 10 formed by the substrate 24 and the printable layer 18, while the plastic film 14 and the release layer 16 are driven in another direction to separate them from the sheet 10.
- FIGS. 5 and 6 are images obtained by a scanning electron microscope (SEM) of a face of a paper or base substrate 24 and a smooth or ultra-smooth face of a sheet 10, produced by the method according to the invention, respectively.
- the base paper ( Figure 5) is here formed of cellulosic fibers intermingled with each other and defining a rough face.
- the roughness Sz of this face is of the order of 19,7 ⁇ , which means that the maximum surface height, from the highest point to the deepest valley is equal to 19,7 ⁇ .
- the sheet according to the invention (FIG. 6) has a smooth or ultra-smooth face defined by its printable layer which has a roughness Sz of the order of ⁇ , ⁇ ⁇ , which is comparable to that of a paper coated with a plastic film, according to the prior art, which has a roughness Sz of the order of 1, 5 ⁇ .
- Example 1 Preparation of a Smooth or Ultra Smooth Sheet Printable by Offset
- a smooth or ultra-smooth sheet according to the invention was prepared for offset printing from a printable layer A having the following composition:
- the printable layer A has a final concentration by weight of 50% and a viscosity of 100cps, measured using a Brookfield® viscometer.
- the layer A is applied on one side of a PET plastic film, which is previously coated with a non-stick layer based on chromium stearyl chloride.
- the removal of the layer A on the film is about 10 g / m 2 .
- Layer A is then dried in an oven at 70 ° C.
- a multilayer structure consisting of the PET plastic film, a non-stick layer of stearic chromium chloride and the printable layer A is then obtained.
- the free face of the layer A is glued with a Super-Lok® 364 glue from the company National Starch.
- the adhesive is deposited at a rate of 3 g / m 2 on the layer A.
- the glued face of the layer A is applied against a substrate formed by a Bristol® paper 335 g / m 2 manufactured by the Arjowiggins company, then the whole is dried. in an oven at 70 ° C.
- the process step b1 is then complete.
- step c1 The plastic film and the nonstick layer are then removed (in step c1) leaving only the printable layer A and the adhesive on the paper substrate.
- Example 2 Preparation of a Smooth or Ultra Smooth Sheet Printable by Offset, from a Bulky Paper or Having a Relatively Large Hand
- Example 2 The printable layer A of Example 2 is prepared and applied in the same manner and under the same conditions as those discussed in Example 1, on a Bulk Paper Elementa® bulk from Arjowiggins. This paper has an initial hand of 1, 4cm 3 / g.
- Example 3 Preparation of an Offset Printable Smooth or Ultra-Smooth Sheet from a Precut Backing Paper
- the printable layer A of Example 3 is prepared and applied in the same manner and under the same conditions as those discussed in Example 1, on a Maine Gloss® precooked paper from Arjowiggins. This paper has an initial Bekk smoothness of 400s.
- a smooth or ultra-smooth colored sheet according to the invention for Offset printing was prepared from a printable layer B having the following composition:
- the printable layer B has a final concentration by weight of 50% and a viscosity of 100cps, measured using a Brookfield® viscometer.
- the layer B is applied on one side of a PET plastic film which is previously coated with a non-stick layer based on chromium stearo chloride The removal of the layer B on the film is about 10g / m 2 .
- the layer B is then dried in an oven at 70 ° C.
- a multilayer structure consisting of the PET plastic film, a non-stick layer made of stearic chromium chloride and the printable layer B, is then obtained.
- the free face of the layer B is glued with a Super-Lok® 364 glue from the company National Starch.
- the adhesive is deposited at a rate of 3 g / m 2 on the layer B.
- the glued face of the layer B is applied against a substrate formed by a Bristol® 335g / m 2 paper manufactured by the Arjowiggins company, then the whole is dried. in an oven at 70 ° C.
- the plastic film and the nonstick layer are then removed leaving only the printable layer B and the adhesive on the paper substrate.
- the paper obtained has a very homogeneous coloring.
- a smooth or ultra-smooth sheet according to the invention with low surface resistivity and Offset printing was prepared from a printable layer C having the following composition:
- the printable layer C has a final concentration by weight of 50% and a viscosity of 100cps, measured using a Brookfield® viscometer.
- the layer C is applied on one side of a PET plastic film which is previously covered with a non-stick layer based on stearo chromium chloride.
- the deposit of the layer C on the film is about 10 g / m 2 .
- the layer C is then dried in an oven at 70 ° C.
- a multilayer structure consisting of the PET plastic film, a non-stick layer of stearic chromium chloride and the printable layer C is then obtained.
- the free face of the layer C is glued with a Super-Lok® 364 glue from the company National Starch.
- the adhesive is deposited at a rate of 3 g / m 2 on the layer C.
- the glued face of the layer C is applied against a substrate formed by a Bristol® 335 g / m 2 paper manufactured by Arjowiggins, then the whole is dried. in an oven at 70 ° C.
- the plastic film and the nonstick layer are then removed leaving only the printable layer C and the adhesive on the paper substrate.
- the resistivity of the paper thus obtained is relatively low, and is of the order of 3.10 7 . This resistivity is lower than that of the paper of Example A, which is of the order of about 10 10 .
- a smooth or ultra-smooth sheet according to the invention for inkjet printing was prepared from a printable layer D having the following composition: compounds
- the printable layer D has a final concentration by weight of 14% and a viscosity of 50cps, measured using a Brookfield® viscometer.
- the layer D is applied on one side of a PET plastic film which is previously covered with a non-stick layer based on chromium stearo chloride.
- the deposit of the layer D on the film is about 15 g / m 2 .
- the D layer is then dried in an oven at 70 ° C.
- a multilayer structure is thus obtained constituted by the PET plastic film, a non-stick layer made of stearochromium chloride and the printable layer D.
- the free face of the layer D is glued with a Super-Lok® 364 glue from the company National Starch.
- the glue is deposited at a rate of 3 g / m 2 on the layer D.
- the glued face of the layer D is applied against a substrate formed by a Bristol® paper 335 g / m 2 manufactured by Arjowiggins, then the whole is dried. in an oven at 70 ° C.
- the plastic film and the nonstick layer are then removed leaving only the printable layer D and the adhesive on the paper substrate.
- the basis weight was measured according to ISO 536 (1976), using a Sartorius® scale with a range of 2200 g and an accuracy of 0.1 g; the thickness was measured according to ISO 534 (1988), by means of an MTS MI20 micrometer;
- the gloss was measured at 75 ° according to the TAPPI® T480 om-92 method, using a Byk-Gardner® micro-gloss 75 ° model 4553 apparatus;
- the surface resistivity was measured according to the ASTM D257-83 method, using a Philips PM2525 Multimeter apparatus;
- Offset printability was evaluated by an absorption test with porometric inks according to a CTP method No. 9; the "porometric ink” test makes it possible to quantify the absorption capacity of a paper and the speed of penetration of the ink of this paper; it is based on the deposit of a special ink, consisting of a black dye, on the paper and on the study of its behavior over time; and
- the transfer of a printable layer (A to D) on a support causes an increase in the basis weight and thickness of this support.
- the increase in grammage is of the order of 30 to 40 g / m 2 in the case of the layer A, 126 g / m 2 in the case of the layer B, 41 g / m 2 in the case of the layer C, and 24g / m 2 in the case of the layer D.
- the increase in thickness is of the order of 20 to 33 ⁇ in the case of the layer A, ⁇ in the case of the layer B, 64 ⁇ in the case of the layer C, and 84 ⁇ in the case of the layer D.
- the increase in the basis weight and thickness of the support is mainly due to the addition of glue and the transfer of the printable layer on this support.
- a paper has a relatively large hand when it has a value greater than or equal to 1, 10cm 3 / g. In the aforementioned examples, only Elementa® bulk paper has a large hand (1, 4cm 3 / g).
- Deposition of the printable layer A on a support causes a decrease in his hand.
- the support initially has a large hand, as is the case of Elementa® bulk in Example 2, the transfer of the layer A on this support causes a slight decrease of his hand (of the order of 5%) .
- the hand of the Elementa® bulk support comprising the layer A remains however very important (1, 33cm 3 / g, that is to say greater than 1, 10cm 3 / g).
- the deposition of the printable layer B on a support causes a decrease in his hand, while the deposition of the printable layer C on a support has little influence on his hand.
- Deposition of the printable layer D on a support causes an increase in its hand because the printable layer is here an inkjet layer which is very porous and therefore has a low density.
- the transfer of the D layer on a Bristol® support increases its smoothness to around 1000s.
- the sheets prepared in Examples 1 to 6 all have a high gloss, greater than 80%.
- the method therefore makes it possible to produce sheets having both a high degree of smoothness and gloss.
- the presence of conductive additive in the layer C significantly reduces the surface resistivity of the sheet.
- the sheet of Example 5 has a surface resistivity which is approximately 1000 times lower than that of the sheets of Examples 1 and 4. This additive makes it possible to increase the electrical conductivity of the sheets and thus to envisage the production of electro-magnetic sheets. conductive.
- the porometric ink test shows that the papers have relatively correct optical density values after inking, even if they do not increase over time. , thus showing limited absorption.
- Example 7 Preparation of a Smooth or Ultra-Smooth Printable Sheet Containing a Varnish or Printable Resin
- a smooth or ultra-smooth sheet according to the invention was prepared from a printable layer formed by a lacquer or an acrylic printable resin E having the following composition. This sheet is printable by Offset.
- the printable lacquer E has a final concentration by weight of 50% and a viscosity of 50cps, measured using a Brookfield® viscometer.
- the varnish E is applied on one side of a PET plastic film, which is previously coated with a nonstick layer based on stéaro chromium chloride.
- the removal of the varnish on the film is about 5g / m 2 .
- the varnish is then dried in an oven at 70 ° C.
- a multilayer structure consisting of PET plastic film, a non-stick layer of stearic chromium chloride and acrylic lacquer is then obtained.
- the free face of the varnish is glued with a Super-Lok® 364 glue from National Starch.
- the adhesive is deposited at a rate of 3g / m 2 on the varnish.
- the glued face of the varnish is applied against a substrate formed by Bristol® 335g / m 2 paper manufactured by Arjowiggins, then the whole is dried in an oven at 70 ° C.
- the plastic film and the layer nonstick are then removed (in step c) to leave only the printable varnish and glue on the paper substrate.
- the transfer of the printable varnish E on the support modifies little the weight, the thickness and the hand of this support. This transfer makes it possible to produce a sheet with a smoothness (> 10,000s) and a gloss (99%) very high.
- the printability of this sheet is however lower than those prepared in Examples 1 to 6 because of the absence of pigments in the printable layer.
- Each prepared sheet here comprises two printable layers AA, AB or AC, a first layer (A, B or C) deposited (by kiss coating) on the nonstick layer of the multilayer structure and a second layer (A) deposited (by kiss coating ) on the first layer.
- the first layer that is to say the layer closest to the plastic film in the multilayer structure, is the layer intended to directly receive the inks during printing. It defines the printability according to the printing process.
- the second layer is a precoat allowing a good adhesion of the first layer on the support and forming a barrier to the glue (to prevent it from entering the first printable layer).
- the plastic film used is a PET film 12 ⁇ thick.
- the printable layers for the preparation of an offset printable sheet are a first layer B, and a second layer A.
- the printable layers for the preparation of an HP Indigo printable sheet are a first layer C, and a second layer A.
- the printable layers for the preparation of a printable sheet by electrically conductive inks (Printed Electronics) are a first layer A, and a second layer A.
- the multilayer structures prepared are of the PET / non-stick layer / layer A & A or C & A type or B & A. Layers A, B and C are deposited at a rate of 6 g / m 2 .
- compositions of these layers are detailed in the following tables.
- Binder 1 aqueous dispersion of styrene-190ml copolymer
- Binder 2 Dispersion aqueous copolymer n-butyl 94ml
- Binder 1 aqueous dispersion of styrene-95ml copolymer
- Binder 2 Aqueous dispersion of n-butyl copolymer 47ml acrylate-acrylonitrile-styrene
- Binder 1 aqueous dispersion of styrene-95ml copolymer
- Binder 2 Aqueous dispersion of n-butyl copolymer 47ml acrylate-acrylonitrile-styrene
- the sheets obtained have good printability according to their applications, that is to say for offset, for the digital HP Indigo and for conductive inks (printed electronics).
Landscapes
- Laminated Bodies (AREA)
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012122864/05A RU2538581C2 (ru) | 2009-12-23 | 2010-12-22 | Ультрагладкий листовой материал для нанесения печати, пригодный для переработки, и способ его изготовления |
CA2785183A CA2785183C (fr) | 2009-12-23 | 2010-12-22 | Feuille imprimable ultra lisse et recyclable et son procede de fabrication |
BR112012015134A BR112012015134A2 (pt) | 2009-12-23 | 2010-12-22 | folha imprimível ultralisa e reciclável, e seu processo de fabricação |
CN201080059381.0A CN102666989B (zh) | 2009-12-23 | 2010-12-22 | 超光滑且可再生的可印刷纸张及其制造方法 |
US13/515,471 US9416495B2 (en) | 2009-12-23 | 2010-12-22 | Printable sheet that is ultra-smooth and recyclable, and its method of fabrication |
EP10809308.9A EP2516741B2 (fr) | 2009-12-23 | 2010-12-22 | Feuille imprimable ultra lisse et recyclable et son procédé de fabrication |
ES10809308T ES2517365T5 (es) | 2009-12-23 | 2010-12-22 | Hoja imprimible ultra-lisa y reciclable y su procedimiento de fabricación |
KR1020127019337A KR101970770B1 (ko) | 2009-12-23 | 2010-12-22 | 재생가능한 초-평탄 프린트 시트 및 그 제조방법 |
IN5032DEN2012 IN2012DN05032A (fr) | 2009-12-23 | 2010-12-22 | |
JP2012545398A JP5890317B2 (ja) | 2009-12-23 | 2010-12-22 | 超平滑で再利用可能な印刷可能シート、及びその製造方法 |
ZA2012/03884A ZA201203884B (en) | 2009-12-23 | 2012-05-28 | Ultrasmooth and recyclable printable sheet and process for manufacturing same |
HK12112872.4A HK1173478A1 (en) | 2009-12-23 | 2012-12-13 | Ultra smooth and recyclable printing sheet and its manufacturing process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0906325A FR2954361B1 (fr) | 2009-12-23 | 2009-12-23 | Feuille imprimable ultra lisse et recyclable et son procede de fabrication |
FR09/06325 | 2009-12-23 |
Publications (1)
Publication Number | Publication Date |
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WO2011077048A1 true WO2011077048A1 (fr) | 2011-06-30 |
Family
ID=42227692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2010/052879 WO2011077048A1 (fr) | 2009-12-23 | 2010-12-22 | Feuille imprimable ultra lisse et recyclable et son procédé de fabrication |
Country Status (14)
Country | Link |
---|---|
US (1) | US9416495B2 (fr) |
EP (1) | EP2516741B2 (fr) |
JP (2) | JP5890317B2 (fr) |
KR (1) | KR101970770B1 (fr) |
CN (1) | CN102666989B (fr) |
BR (1) | BR112012015134A2 (fr) |
CA (1) | CA2785183C (fr) |
ES (1) | ES2517365T5 (fr) |
FR (1) | FR2954361B1 (fr) |
HK (1) | HK1173478A1 (fr) |
IN (1) | IN2012DN05032A (fr) |
RU (1) | RU2538581C2 (fr) |
WO (1) | WO2011077048A1 (fr) |
ZA (1) | ZA201203884B (fr) |
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- 2010-12-22 JP JP2012545398A patent/JP5890317B2/ja not_active Expired - Fee Related
- 2010-12-22 CA CA2785183A patent/CA2785183C/fr not_active Expired - Fee Related
- 2010-12-22 EP EP10809308.9A patent/EP2516741B2/fr active Active
- 2010-12-22 CN CN201080059381.0A patent/CN102666989B/zh not_active Expired - Fee Related
- 2010-12-22 KR KR1020127019337A patent/KR101970770B1/ko active IP Right Grant
- 2010-12-22 BR BR112012015134A patent/BR112012015134A2/pt not_active Application Discontinuation
- 2010-12-22 ES ES10809308T patent/ES2517365T5/es active Active
- 2010-12-22 IN IN5032DEN2012 patent/IN2012DN05032A/en unknown
- 2010-12-22 US US13/515,471 patent/US9416495B2/en active Active
- 2010-12-22 RU RU2012122864/05A patent/RU2538581C2/ru active
-
2012
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- 2012-12-13 HK HK12112872.4A patent/HK1173478A1/xx not_active IP Right Cessation
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104204353A (zh) * | 2012-01-13 | 2014-12-10 | 阿约威津斯优质纸有限公司 | 制造板片的方法 |
CN104204353B (zh) * | 2012-01-13 | 2017-08-15 | 阿约威津斯优质纸有限公司 | 制造板片的方法 |
EP2802711B1 (fr) | 2012-01-13 | 2017-10-25 | Arjo Wiggins Fine Papers Limited | Procédé de fabrication d'une feuille |
FR2992663A1 (fr) * | 2012-07-02 | 2014-01-03 | Arjo Wiggins Fine Papers Ltd | Procede de fabrication d'une feuille dont une face comporte une zone de plus grand lisse que le reste de la face |
FR3012153A1 (fr) * | 2013-10-21 | 2015-04-24 | Arjo Wiggins Fine Papers Ltd | Papier destine en particulier a l'impression d'une couche electro-conductrice |
WO2015059157A1 (fr) * | 2013-10-21 | 2015-04-30 | Arjo Wiggins Fine Papers Limited | Papier destiné en particulier à l'impression d'une couche électro-conductrice |
KR20160074539A (ko) * | 2013-10-21 | 2016-06-28 | 아르조 위긴스 파인 페이퍼즈 리미티드 | 특히 전기전도성 층을 프린트하기 위한 종이 |
KR102014904B1 (ko) | 2013-10-21 | 2019-08-27 | 아르조 위긴스 파인 페이퍼즈 리미티드 | 특히 전기전도성 층을 프린트하기 위한 종이 |
WO2017085085A1 (fr) | 2015-11-16 | 2017-05-26 | Arjo Wiggins Fine Papers Limited | Objet en plastique moulé par injection présentant un circuit électronique enrobé, imprimé sur un support en papier et procédé pour sa production |
US11052584B2 (en) | 2015-11-16 | 2021-07-06 | Aw Branding Limited | Injection molded plastic object with an embedded electronic circuit printed on a paper base and method of its production |
EP3187322A1 (fr) | 2015-12-31 | 2017-07-05 | Arjo Wiggins Fine Papers Limited | Utilisation de dispositifs électroniques imprimés sur papier pour intégrer un circuit dans des objets moulés en plastique |
Also Published As
Publication number | Publication date |
---|---|
ES2517365T3 (es) | 2014-11-03 |
JP2013515628A (ja) | 2013-05-09 |
CA2785183C (fr) | 2017-08-01 |
IN2012DN05032A (fr) | 2015-10-02 |
RU2538581C2 (ru) | 2015-01-10 |
ZA201203884B (en) | 2013-01-31 |
KR20120125406A (ko) | 2012-11-14 |
JP2016106183A (ja) | 2016-06-16 |
JP5890317B2 (ja) | 2016-03-22 |
CN102666989A (zh) | 2012-09-12 |
CA2785183A1 (fr) | 2011-06-30 |
FR2954361B1 (fr) | 2012-06-15 |
BR112012015134A2 (pt) | 2016-06-21 |
US9416495B2 (en) | 2016-08-16 |
EP2516741A1 (fr) | 2012-10-31 |
RU2012122864A (ru) | 2014-01-27 |
EP2516741B1 (fr) | 2014-08-06 |
JP6218795B2 (ja) | 2017-10-25 |
EP2516741B2 (fr) | 2021-05-12 |
ES2517365T5 (es) | 2021-12-14 |
US20120308744A1 (en) | 2012-12-06 |
CN102666989B (zh) | 2015-11-25 |
KR101970770B1 (ko) | 2019-08-27 |
FR2954361A1 (fr) | 2011-06-24 |
HK1173478A1 (en) | 2013-05-16 |
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