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WO1988005094A1 - Improved offset printing method on sheets of polyamide or polyester fabric, printed sheets thus obtained and their applications - Google Patents

Improved offset printing method on sheets of polyamide or polyester fabric, printed sheets thus obtained and their applications Download PDF

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Publication number
WO1988005094A1
WO1988005094A1 PCT/FR1988/000010 FR8800010W WO8805094A1 WO 1988005094 A1 WO1988005094 A1 WO 1988005094A1 FR 8800010 W FR8800010 W FR 8800010W WO 8805094 A1 WO8805094 A1 WO 8805094A1
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Prior art keywords
sheet
varnish
printing
polyamide
sheets
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PCT/FR1988/000010
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French (fr)
Inventor
Michel Bierce
Daniel Bourguignon
Patrick Daigneau
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Individual
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00Inking and printing with a printer's forme
    • B41M1/06Lithographic printing
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00Details; Accessories
    • A45C13/08Decorative devices for handbags or purses
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/001Special chemical aspects of printing textile materials

Definitions

  • Offset printing provides reproductions of images with the following advantages: excellent definition (i.e. sharpness comparable to that of good photography or conventional offset printing on paper), good registration (that is to say, a perfect match of the different colored parts of the image), a consistency of appearance of the reproduction, in other words a constant quality of the impression.
  • offset printing is used without any problem on paper (porous and absorbent support, drying easily and consequently retaining inks), it is not the same on a support in non-porous and waterproof plastic, such as polyamide or polyester.
  • Polyamide and polyester are currently printed by screen printing or by hot transfer, but these methods do not make it possible to obtain the definition of the photograph, or to have very gradual gradations, invisible connections and consistency of reproduction, during the production of printed supports. On the other hand, these are procedures two to ten times more expensive than offset printing, depending on the qu antites i mpr i mées.
  • the purpose of the present invention is to overcome all these drawbacks and to make it possible to benefit from the advantages of offset process, for printing sheets of polyamide or polyester fabric, whereas in this case we had to give up in this case using this process.
  • the invention therefore has as its first object an improved offset printing process on a sheet of polyamide or polyester fabric, characterized in that offset printing is carried out on said sheet under specially adapted conditions, comprising the use a finer screen than in conventional offset, a color selection made using a scanner, which screens the image with restitution of the thickness of the screen points by means of a laser beam, and by greatly increasing the contrasts, the deposition of a lower ink load than on offset on paper to achieve each color value, the use of conventional offset inks called fatty but with the addition of a drying accelerating agent and a siccative in the fountain water, and the use of printing machines having a conveyor system with inclined web or with suction margin, these machines having to be multi-color to allow the simultaneous printing of the various colors eurs of the image, then in that the inks of the printed image are fixed by depositing on the latter a film of a varnish based on plastic material, which hardens on drying by clinging in the plastic material of the leaf and which is insoluble in water.
  • the maximum ink load should not exceed 150% of the surface to be printed for the composition of a tone with all the colors used in superposition, whereas in offset on paper, we can reach 300% or even 400% ; such a deposit of ink on a polyamide or polyester fabric would not allow the ink to dry or be maintained over time under a varnish.
  • the inks used are conventional inks known as fatty inks, but have a drying accelerating agent as well as a siccative in wetting water.
  • the primary color range used is a so-called fresh DIN range, in order to make up for the loss of color caused by the fabric.
  • Printing machines must have a very specific fabric sheet transport system: only machines with an inclined web transport system such as machines of the "SPEEDMASTER” type (manufacturer HEIDELBERG,
  • RFA Raster Fidelity
  • a transport system with suction margin and not with a horizontal sheet allow reliable transport.
  • the image must be printed in one go, because the instability of the fabric does not allow a good location of the image and we would otherwise have a blurred image, therefore not usable.
  • We must therefore adopt a machine with two or four colors, depending on the pattern of the image.
  • the fabric must first be perfectly cut and square before going to the machine and not allow any roughness to protrude, as this could cause serious incidents when passing through the machine, given the solidity of the material and its pressure resistance between the rollers. Once the printing is finished, we immediately proceed to surfacing (depositing the varnish film) in order to block the ink and to give the printing a perfect resistance to friction and to the sun.
  • the varnish used is chosen from liquid resins resistant after friction and water drying. Mention may be made of a serigraphic polyurethane varnish, for example of the brand "SERICOL” (manufacturer: SERICOL, France, which is applied by serigraphy. The depct is effected only on the printed image, by means of a suitable screen and of a fine screen printing screen placed on the screen. Drying is obtained quickly with red iridescence, or, if the gold has the necessary time and space, by oxidation to the desire. varnishing is a bit weak by this screen printing method. One can also mention a varnish of urethane-acrylate, such as that called “Reticle 99" of Dutch manufacturing and food grade.
  • the varnish should penetrate the mesh of the polyamide or polyester fabric, but not form a relatively thick layer and of flat surface above the fabric.
  • the thickness of the varnish film may vary between approximately 8 and approximately 12 microns. It is of course possible to dilute the varnish with an appropriate solvent such as the "Kilobag” thinner (manufacturer SERICOL, France) to facilitate its spreading in a thin layer. A viscosity of the varnish of 15 to 20 poises is suitable. Under these conditions of application, the varnish will have a retraction of only 1 per 1000.
  • the cost price of the sheets printed by the process according to the invention is much lower than that of sheets of the same kind printed by screen printing or by transits, the yield of the offset process being much more Student; as for the quality of the printed image, it is incomparably superior.
  • a second object of the invention is the sheets of printed polyamide or polyester fabric, obtained by the present process and whose images, in addition to their resistance to friction, to the sun and to water, have all the qualities resulting from the process offset uses.
  • Another object of the invention is the applications of these sheets, which are numerous.
  • Preierence with paper lining they feel useful for the production of book covers.
  • a waterproof coating of plastic in particular polyvinyl chloride
  • Offset printing is carried out under the conditions set out above, then varnishing with the above-mentioned urethane-acrylate varnish.
  • the varnish is immediately dried in a team of ultraviolet lamps.
  • the thickness of the layer of this varnish is approximately 15 microns.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Printing Methods (AREA)

Abstract

The offset printing on said sheet is carried out in specially adapted conditons as to the screen, the colour selection, the ink fill for composing each tone, the inks which are mixed with additives, the printing machines; then the inks of the printed image are fixed by depositing on the image a varnish film based on plastic material which hardens while drying and grips onto the plastic material of the sheet and is water-insoluble, such as a polyurethane or urethane-acrylate varnish. The polyamide or polyester sheet is preferably backed with a sheet of paper or water proofing pastic material. Applications of the obtained printed sheets: packaging and coating material, posters and copies of paintings, making of bags, leather articles, clothes, book covers, etc.

Description

Procede perfectionne d'impression offset sur feuilles en tissu de polyamide ou de polyester, feuilles imprimees ainsi obtenues et leurs applications. Improved offset printing process on sheets of polyamide or polyester fabric, printed sheets thus obtained and their applications.

L'impression offset fournit des reproductions d'images présentant les avantages suivants : une excellente définition (c'est-a-dire une netteté comparable a celle d'une bonne photographie ou d'une impression offset conventionnelle sur papier), un bon repérage (c'est-a-dire un raccord parfait des parties de couleurs différentes de l'image), une constance d'aspect de la reproduction, autrement dit une qualite constante de l'impression.Offset printing provides reproductions of images with the following advantages: excellent definition (i.e. sharpness comparable to that of good photography or conventional offset printing on paper), good registration (that is to say, a perfect match of the different colored parts of the image), a consistency of appearance of the reproduction, in other words a constant quality of the impression.

Si l'impression offset est utilisée sans aucun problème sur papier (support poreux et absorbant, séchant facilement et par suite retenant les encres), il n'en est pas de même sur un support en matière plastique non poreuse et impermeable, telle qu'un polyamide ou un polyester.If offset printing is used without any problem on paper (porous and absorbent support, drying easily and consequently retaining inks), it is not the same on a support in non-porous and waterproof plastic, such as polyamide or polyester.

Dans ce cas en effet, l'impression, qui tient parfaitement sur le papier, s'étale puis s'enlevé au frottement, du fait qu'elle ne pénètre pas et n'accroche pas dans la matiere plastique imperméable.In this case, in fact, the impression, which fits perfectly on the paper, spreads out and is removed by friction, because it does not penetrate and does not catch on the waterproof plastic.

On imprime actuellement le polyamide et le polyester par sérigraphie ou par transfert a chaud, mais ces méthodes ne permettent pas d'obtenir la définition de la photographie, ni d'avoir des dégradés tres progressifs, des raccords invisibles et une constance de la reproduction, en cours de fabrication des supports imprimes. D'autre part, ce sont des procèdes de deux a dix fois plus onéreux que l'impression offset, suivant les qu antites i mpr i mées .Polyamide and polyester are currently printed by screen printing or by hot transfer, but these methods do not make it possible to obtain the definition of the photograph, or to have very gradual gradations, invisible connections and consistency of reproduction, during the production of printed supports. On the other hand, these are procedures two to ten times more expensive than offset printing, depending on the qu antites i mpr i mées.

La presente invention a pour but de pallier tous ces inconvénients et de permettre de beneficier des avantages du procède offset, pour l'impression de feuilles en tissu de polyamide ou de polyester, alors qu'on avait du jusqu'alors renoncer dans ce cas a employer ce procede.The purpose of the present invention is to overcome all these drawbacks and to make it possible to benefit from the advantages of offset process, for printing sheets of polyamide or polyester fabric, whereas in this case we had to give up in this case using this process.

L'invention a donc pour premier objet un procede perfectionne d'impression offset sur une feuille en tissu de polyamide ou de polyester, caracterise en ce qu'on effectue l'impression offset sur ladite feuille dans des conditions specialement adaptees, comprenant l'utilisation d'une trame plus fine qu'en offset conventionnel, une sélection de couleur effectuée à l'aide d'un scanner, qui trame l'image avec restitution de l'épaisseur des points de trame au moyen d'un rayon laser, et en augmentant fortement les contrastes, le dépôt d'une charge d'encre moins importante qu'en offset sur papier pour realiser chaque valeur de couleur, l'emploi d'encres offset conventionnelles dites grasses mais avec addition d'un agent accélerateur de séchage et d'un siccatif dans l'eau de mouillage, et l'emploi de machines a imprimer ayant un système de transport à nappe inclinee ou à marge a succion, ces machines devant être multicouieurs pour permettre l'impression simultanée des diverses couleurs de l'image, puis en ce qu'on fixe les encres de l'image imprimee en déposant sur celle-ci un film d'un vernis à base de matière plastique, qui durcisse au sechage en s'accrochant dans la matière plastique de la feuille et qui soit insoluble dans l'eau. II est recommandé d'utiliser une trame de 175 lignes de peints au pouce (25,4mm), ceci étant beaucoup plus fin que la trame employèe en offset conventionnel, qui est à 133 ou 150 lignes au pouce, afin de rattraper la perte de détail occasionnée par la trame du tissu de polyamide ou polyester. La sé lection de cou leur se f era de l a façon dite de "retrait de sous couleur", c'est-a-dire que la charge d'encre déposée pour réaliser une valeur de couleur devra être beaucoup meins importante qu'en offset sur papier. La charge d'encre maximaie ne devra pas dépasser 150% de la surface a imprimer pour la composition d'un ton avec l'ensemble des couleurs employées en superposition, elors qu'en offset sur papier, on peut atteindre 300% voire 400%; un tel depet d'encre sur un tissu de poiyamide ou polyester ne permettrait ni le séchage de l'encre ni son maintien dans le temps sous un vernis.The invention therefore has as its first object an improved offset printing process on a sheet of polyamide or polyester fabric, characterized in that offset printing is carried out on said sheet under specially adapted conditions, comprising the use a finer screen than in conventional offset, a color selection made using a scanner, which screens the image with restitution of the thickness of the screen points by means of a laser beam, and by greatly increasing the contrasts, the deposition of a lower ink load than on offset on paper to achieve each color value, the use of conventional offset inks called fatty but with the addition of a drying accelerating agent and a siccative in the fountain water, and the use of printing machines having a conveyor system with inclined web or with suction margin, these machines having to be multi-color to allow the simultaneous printing of the various colors eurs of the image, then in that the inks of the printed image are fixed by depositing on the latter a film of a varnish based on plastic material, which hardens on drying by clinging in the plastic material of the leaf and which is insoluble in water. It is recommended to use a weft of 175 painted lines per inch (25.4mm), this being much thinner than the weft used in conventional offset, which is 133 or 150 lines per inch, in order to compensate for the loss of detail caused by the weft of the polyamide or polyester fabric. The color selection will be done in the so-called "under color removal" way, that is to say that the ink charge deposited to achieve a color value must be much less than in offset on paper. The maximum ink load should not exceed 150% of the surface to be printed for the composition of a tone with all the colors used in superposition, whereas in offset on paper, we can reach 300% or even 400% ; such a deposit of ink on a polyamide or polyester fabric would not allow the ink to dry or be maintained over time under a varnish.

Comme sυsindique, les encres utilisées sont des encres ciiset conventionnelles dites grasses, mais a ve c un agent accélérateur de séchage ainsi qu'un siccatif dans l'eau de mouillage. La gamme de couleur primaire utilisée est une gamme DIN dite fraiche, dans le but de rattraper la perte de couleur occasionnée par le tissu.As indicated, the inks used are conventional inks known as fatty inks, but have a drying accelerating agent as well as a siccative in wetting water. The primary color range used is a so-called fresh DIN range, in order to make up for the loss of color caused by the fabric.

Les machines a imprimer doivent avoir un système de transport de la feuille de tissu très particulier : seules les machines ayant un système de transport a nappe inclinée tel celui des machines du type " SPEEDMASTER" (fabricant HEIDELBERG,Printing machines must have a very specific fabric sheet transport system: only machines with an inclined web transport system such as machines of the "SPEEDMASTER" type (manufacturer HEIDELBERG,

RFA) ou encore un système de transport a marge a succion et non pas a nappe horizontale permettent un transport iiable. L'image doit être imprimée en une seule fois, car l'instabilité du tissu ne permet pas un bon repérage de l'image et on aurait autrement une image floue, donc non utilisable. On doit donc adopter une machine a deux ou quatre couleurs, suivant le motif de l'image. Le tissu devra au préalable être parfaitement coupe et equerre avant de passer en machine et ne laisser dépasser aucune aspérité, car cela pourrait occasionner de graves incidents au passage en machine, vu la solidité de la matière et sa résistance en pression entre les rouleaux. Une fois l'impression terminée, on procède aussitôt au surfaçage (dépôt du film de vernis) afin de bloquer l'encre et de conférer a l'impression une parfaite résistance au frottement et au soleil.RFA) or a transport system with suction margin and not with a horizontal sheet allow reliable transport. The image must be printed in one go, because the instability of the fabric does not allow a good location of the image and we would otherwise have a blurred image, therefore not usable. We must therefore adopt a machine with two or four colors, depending on the pattern of the image. The fabric must first be perfectly cut and square before going to the machine and not allow any roughness to protrude, as this could cause serious incidents when passing through the machine, given the solidity of the material and its pressure resistance between the rollers. Once the printing is finished, we immediately proceed to surfacing (depositing the varnish film) in order to block the ink and to give the printing a perfect resistance to friction and to the sun.

Le vernis utilise est choisi parmi les résines liquides résistant après séchage au frottement et à l'eau. On peut mentionner un vernis de polyuréthanne serigraphique, par exemple de la marque "SERICOL" (fabricant : SERICOL, France , qui est applique par sérigraphie. Le depct est eifectue uniquement sur l'image imprimée, au moyen d'un écran appropr i e et d'une trame fine pour sérigraphie placée sur l'écran. Le séchage est obtenu rapidement aux inira-rouges, ou, si l'or dispose du temps et de l'espace nécessaires, par oxydstion a l'sir. La ca dence de vernissage est un peu faible par cette méthode serigraphique. On peut aussi mentionner un vernis d'urethanne-acrylate, tel celui dénomme "Réticule 99" de rabrication hollandaise et de qualité alimentaire. Il est dépose sur la totalité de la feuille au moyen d'une machine automatique pourvue d'une raclette, employee pour l'application de ce même vernis sur le papier. Le séchage est effectue sous ultra-violets. La cadence de vernissage est beaucoup plus rapide avec cette seconde méthode; le rendement horaire est cinq a dix fois supérieur. un peut encore avoir recours a un procède flexographique avec machine conventionnelle monocouleur et dépôt du vernis seulement sur l'image imprimée; les deux vernis précédemment cites conviennent dans ce cas, avec séchage respectivement aux infra-rouges et aux ultra-violets; la cadence de vernissage est grande avec cette méthode.The varnish used is chosen from liquid resins resistant after friction and water drying. Mention may be made of a serigraphic polyurethane varnish, for example of the brand "SERICOL" (manufacturer: SERICOL, France, which is applied by serigraphy. The depct is effected only on the printed image, by means of a suitable screen and of a fine screen printing screen placed on the screen. Drying is obtained quickly with red iridescence, or, if the gold has the necessary time and space, by oxidation to the desire. varnishing is a bit weak by this screen printing method. One can also mention a varnish of urethane-acrylate, such as that called "Reticle 99" of Dutch manufacturing and food grade. It is deposited on the entire sheet by means of an automatic machine provided with a squeegee, used for applying this same varnish to the paper. The drying is carried out under ultraviolet light. The varnishing rate is much faster with this second method; hourly output is five to ten times higher. one can also have recourse to a flexographic process with a conventional single-color machine and depositing the varnish only on the printed image; the two previously mentioned varnishes are suitable in this case, with drying respectively with infrared and ultraviolet; the varnishing rate is high with this method.

Le vernis doit pénétrer dans les mailles du tissu de poiyamide ou de polyester, mais ne pas former une couche relativement épaisse et de surface plane au-dessus du tissu. L'épaisseur du film de vernis pourra varier entre environ 8 et environ 12 microns. On peut bien entendu diluer le vernis avec un solvant approprié tel que le diluant "Kilobag" (fabriquant SERICOL, France) pour faciliter son étalement en couche mince. Une viscosité du vernis de 15 à 20 poises est convenable. Dans ces conditions d'application, le vernis aura une rétractation de seulement 1 pour 1000.The varnish should penetrate the mesh of the polyamide or polyester fabric, but not form a relatively thick layer and of flat surface above the fabric. The thickness of the varnish film may vary between approximately 8 and approximately 12 microns. It is of course possible to dilute the varnish with an appropriate solvent such as the "Kilobag" thinner (manufacturer SERICOL, France) to facilitate its spreading in a thin layer. A viscosity of the varnish of 15 to 20 poises is suitable. Under these conditions of application, the varnish will have a retraction of only 1 per 1000.

En imprimerie sur papier, il est possible et connu d'appliquer par le procédé offset un film protecteur de vernis sur l'image imprimée, mais en une épaisseur qui est tout a fait insuffisante pour fixer une image offset formée sur un support en tissu de polyamide ou de polyester. Il est nouveau d'obtenir un tel fixage suivant l'invention par un choix convenable du mode de dépôt et de la nature du vernis, qui doit pénétrer de façon uniforme dans les mailles dudit tissu sans remplir completement le creux des mailles. La feuille en tissu de polyamide ou de polyester est avantageusement contrecollee sur son envers avec une feuille de papier, ou une feuille de matière plastique imperméabilisante, telle eu'une feuille de chlcrure de poiyvinyle ou similaire, suivant l'usage auquel elle est destinée. Ce doublage est enectue avant l'opération d'impression offset. Lorsque la leuiile imprimée est pourvue par enduction d'une doublure impermeable, elle est lavable le vernis de fixare ce sa face endroit n'étant pas soluble dans l'eau) aux temperatures auxquelles résistent les matériaux qui la constituent.In printing on paper, it is possible and known to apply by the offset process a protective film of varnish to the printed image, but in a thickness which is entirely insufficient to fix an offset image formed on a fabric support. polyamide or polyester. It is new to obtain such a fixing according to the invention by a suitable choice of the method of deposition and the nature of the varnish, which must penetrate uniformly into the stitches of said fabric without completely filling the hollow of the stitches. The sheet of polyamide or polyester fabric is advantageously laminated on its reverse side with a sheet of paper, or a sheet of waterproofing plastic material, such as a sheet of polyvinyl chloride or the like, depending on the use for which it is intended. This dubbing is performed before the offset printing operation. When the printed sheet is provided by coating with a waterproof lining, it is washable the varnish of fixare (its front side not being soluble in water) at the temperatures to which the materials that constitute it resist.

Même avec l'étape d'application de vernis, le prix de revient des feuilles imprimées par le procède suivant l'invention est très inférieur a celui de feuilles de même nature imprimees par sérigraphie ou par transiert, le rendement du procède offset étant beaucoup plus eleve; quant a la qualite de l'image imprimee, elle est incomparablement supérieure.Even with the varnish application step, the cost price of the sheets printed by the process according to the invention is much lower than that of sheets of the same kind printed by screen printing or by transits, the yield of the offset process being much more Student; as for the quality of the printed image, it is incomparably superior.

Un second objet de l'invention est les feuilles en tissu de polyamide ou de polyester imprimées, obtenues par le présent procède et dont les images, outre leur résistance au frottement, au soleil et a l'eau, présentent toutes les qualités résultant du procède offset utilise.A second object of the invention is the sheets of printed polyamide or polyester fabric, obtained by the present process and whose images, in addition to their resistance to friction, to the sun and to water, have all the qualities resulting from the process offset uses.

Un autre objet de l'invention est les applications de ces feuilles, qui sont nombreuses. On peut citer les suivantes : De preierence avec doublure en papier, elles sent utiles pour la fabrication de couvertures de livres. Si nécessaire avec une enduction impermeabilisante de plastique, notamment de chlorure de polyvmyle, elles sont utiles comme materiau d'emballage et de revêtement, ainsi que pour la réalisation d'affiches et de reproductions de tableaux, pou r la coniection de sacs et d'articles de maroquinerie en gêneral, pour la confection de vêtements tels que blousons, anoraks et similaires. Cette enumeration n'est pas limitative. Exemple Impression de formats plats en tissu de polyamide "Nylon" par exemple; contrecolle de papier ou de chlorure de polyvinyie, ayant par exemple comme dimensions 55cm x 70cm.Another object of the invention is the applications of these sheets, which are numerous. We can cite the following: Preierence with paper lining, they feel useful for the production of book covers. If necessary with a waterproof coating of plastic, in particular polyvinyl chloride, they are useful as packaging and coating material, as well as for making posters and reproductions of paintings, for the coniection of bags and general leather goods, for making clothing such as jackets, anoraks and the like. This list is not exhaustive. Example Printing of flat formats in polyamide "Nylon" fabric for example; laminate of paper or polyvinyl chloride, for example having dimensions 55cm x 70cm.

On effectue l'impression offset dans les conditions exposées ci-dessus, puis le vernissage avec le vern i s d'urethanne-acrylate susindicue. On fait immédiatement sécher le vernis dans un leur ecuipe αe lampes a ultra-violets. L'épaisseur de la couche ce vernis est d'environ 15 microns. Offset printing is carried out under the conditions set out above, then varnishing with the above-mentioned urethane-acrylate varnish. The varnish is immediately dried in a team of ultraviolet lamps. The thickness of the layer of this varnish is approximately 15 microns.

Claims

REVENDI CATIONS 1.- Procède perfectionne d'impression offset sur une feuille en tissu de polyamide ou de polyester, caractérise en ce qu'on effectue l'impression offset sur ladite feuille dans des conditions spécialement adaptées, comprenant l'utilisation d'une trame plus fine qu'en offset conventionnel, une sélection de couleur effectuée à l'aide d'un scanner, qui trame l'image avec restitution de l'épaisseur des points de trame au moyen d'un rayon laser, et en augmentant fortement les contrastes, le dépôt d'une charge d'encre moins importante qu'en offset sur papier pour réaliser chaque valeur de couleur, l'emploi d'encres offset conventionnelles dites grasses mais avec addition d'un agent accélérateur de sechage et d'un siccatif dans l'eau de mouillage, et l'emploi de machines a imprimer ayant un système de transport a nappe inclinee ou a marge a succion, ces machines devant être multicouieurs pour permettre l'impression simultanée des diverses couleurs de l'image, puis en ce qu'on fixe les encres de l'image imprimée en déposant sur celle-ci un film d'un vernis a base de matière plastique, qui durcisse au séchage en s'accrochant dans la matière plastique de la feuille et qui soit insoluble dans l'eau. REVENDI CATIONS 1.- Improves offset printing on a sheet of polyamide or polyester fabric, characterized in that offset printing is carried out on said sheet under specially adapted conditions, including the use of a screen finer than conventional offset, a color selection made using a scanner, which screens the image with restitution of the thickness of the screen points by means of a laser beam, and by greatly increasing the contrasts, the deposition of a lower ink load than on offset on paper to achieve each color value, the use of conventional offset inks called fatty but with the addition of a drying accelerator and a siccative in fountain water, and the use of printing machines having an inclined tablecloth or suction margin transport system, these machines having to be multi-color to allow the simultaneous printing of the various colors of the image, p uis in that the inks of the printed image are fixed by depositing thereon a film of a varnish based on plastic material, which hardens on drying by clinging in the plastic material of the sheet and which is insoluble in water. 2.- Procédé suivant la revendication 1, caractérise en ce que l'on effectue l'impression offset en utilisant une trame de 175 lignes de points par 25,4mm. 2.- Method according to claim 1, characterized in that one performs offset printing using a screen of 175 lines of dots by 25.4mm. 3.- Procède suivant la revendication 1 ou 2, caracterise en ce que l'on enectue l'impression ofiset en déposant une charge d'encre ne dépassant pas 150% pour la composition d'un ton.3.- A method according to claim 1 or 2, characterized in that one performs the printing ofiset by depositing an ink charge not exceeding 150% for the composition of a tone. 4.- Procede suivant l'une quelconque des revendications 1 à 3, caractérise en ce que l'on enectue l'impression onset avec une machine a deux ou quatre couleurs, suivant le motif de l'image.4.- Method according to any one of claims 1 to 3, characterized in that onect the onset printing with a machine has two or four colors, depending on the pattern of the image. 5.- Procède suivant l'une quelconque des revendications 1 à 4, caractérise en ce que le vernis employé est un vernis de polyuréthanne, qui est applique par sérigraphie et sèche aux in fra-rouges ou par oxydation a l'air5.- Method according to any one of claims 1 to 4, characterized in that the varnish used is a polyurethane varnish, which is applied by screen printing and dried in in red or by air oxidation 6.- Procède suivant l'une quelconque des revendications 1 à 4, caractérise en ce que le vernis employé est un vernis d'urethanne-acrylate, qui est dépose au moyen d'une machine automatique pourvue d'une raclette et qui est sèche aux ultraviolets.6.- Method according to any one of claims 1 to 4, characterized in that the varnish used is a urethane-acrylate varnish, which is deposited by means of an automatic machine provided with a squeegee and which is dry ultraviolet. 7.- Procède suivant l'une quelconque des revendications 1 à7.- Method according to any one of claims 1 to 4, caractérise en ce que le vernis employé est un vernis de polyuréthanne ou d'urethanne-acrylate, dépose par un procède flexographique avec machine conventionnelle monocouleur et sèche respectivement aux infra-rouges et aux ultra-violets.4, characterized in that the varnish used is a polyurethane or urethane-acrylate varnish, deposited by a flexographic process with a conventional single-color machine and dries respectively with infrared and ultraviolet. 8.- Procède suivant l'une quelconque des revendications 1 à 7, caractérise en ce que le film de vernis est dépose en une épaisseur d'environ 8 a 12 microns. 8.- Method according to any one of claims 1 to 7, characterized in that the varnish film is deposited in a thickness of about 8 to 12 microns. 9.- Procède suivant l'une quelconque des revendications 1 à9.- Method according to any one of claims 1 to 5, caractérise en ce qu'on utilise une feuille en tissu de polyamide ou de polyester contrecoliee d'une feuille de papier.5, characterized in that a sheet of polyamide or polyester fabric is used which is laminated with a sheet of paper. 10.- Procède suivant l'une quelconque des revendications 1 a 8, caractérise en ce qu'on utilise une feuille en tissu de polyamide ou de polyester contrecoliee d'une feuille de matiere plastique impermeabilisante10.- Method according to any one of claims 1 to 8, characterized in that one uses a sheet of polyamide or polyester fabric laminated with a sheet of waterproof plastic material 11.- Procède suivant la revendication 10, caractérise en ce que la matière plastique imperméabilisante est le chlorure de polyvmyle. 11.- Method according to claim 10, characterized in that the waterproofing plastic is polyvinyl chloride. 12.- Feuilles en tissu de polyamide ou de polyester imprimées, obtenues par le procède suivant l'une quelconque des revendications 1 a 11. 12.- Sheets of printed polyamide or polyester fabric, obtained by the process according to any one of claims 1 to 11. 13.- Application des feuilles suivant la revendication 12 comme matériau d'emballage et de revêtement, ainsi que pour la réalisation d'affiches et de reproductions de tableaux, pour la confection de sacs et d'articles de maroquinerie en gêneral, peur la confection de vêtements tels que blousons, anoraks et similaires, pour la fabrication de couvertures de livres.13.- Application of the sheets according to claim 12 as packaging and coating material, as well as for the production of posters and reproductions of paintings, for the making of bags and leather goods in general, for the making clothing such as jackets, anoraks and the like, for making book covers. 14.- Application suivant la revendication 13, caractérise en ce qu'on emploie des feuilles contrecollees d'une feuille de papier pour la fabrication de couvertures de livres et des feuilles contrecollees d'une feuille de matière plastique imperméabilisante pour toutes les autres applications nécessitant une etancheitè à l'eau. 14.- Application according to claim 13, characterized in that sheets laminated with a sheet of paper are used for the production of book covers and sheets laminated with a sheet of waterproofing plastic material for all other applications requiring water tightness.
PCT/FR1988/000010 1987-01-07 1988-01-06 Improved offset printing method on sheets of polyamide or polyester fabric, printed sheets thus obtained and their applications Ceased WO1988005094A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR87/00066 1987-01-07
FR8700066A FR2609259A1 (en) 1987-01-07 1987-01-07 IMPROVED OFFSET PRINTING METHOD ON POLYAMIDE OR POLYESTER FABRIC SHEETS, PRINTED SHEETS THUS OBTAINED AND THEIR APPLICATIONS

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EP0367882A1 (en) * 1988-10-12 1990-05-16 G.C. Conseils Offset printing method for polyamide or/and polyester sheets
WO2014114630A3 (en) * 2013-01-22 2014-10-09 Bamberger Kaliko Textile Finishing Gmbh Textile substrate for printing with liquid ink in an offset-similar method

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FR2868735B1 (en) * 2004-04-08 2007-09-28 Polygo Sarl METHOD AND INSTALLATION OF PRINTING THERMOPLASTIC MATERIAL SLABS TO REALIZE REPORTED FLOOR
CN103862912B (en) * 2014-03-19 2015-09-16 嘉兴职业技术学院 For the protection of the preparation method of the diaphragm of books

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GB1281448A (en) * 1970-03-11 1972-07-12 Valley Printing Company Ltd Improvements in or relating to printing processes
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Publication number Priority date Publication date Assignee Title
EP0367882A1 (en) * 1988-10-12 1990-05-16 G.C. Conseils Offset printing method for polyamide or/and polyester sheets
WO2014114630A3 (en) * 2013-01-22 2014-10-09 Bamberger Kaliko Textile Finishing Gmbh Textile substrate for printing with liquid ink in an offset-similar method

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FR2609259A1 (en) 1988-07-08

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