EP1075431B1 - Transparent or translucent paper envelope - Google Patents

Transparent or translucent paper envelope Download PDF

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Publication number
EP1075431B1
EP1075431B1 EP99913354A EP99913354A EP1075431B1 EP 1075431 B1 EP1075431 B1 EP 1075431B1 EP 99913354 A EP99913354 A EP 99913354A EP 99913354 A EP99913354 A EP 99913354A EP 1075431 B1 EP1075431 B1 EP 1075431B1
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EP
European Patent Office
Prior art keywords
glue
adhesive
transparent
deposit
product according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP99913354A
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German (de)
French (fr)
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EP1075431A1 (en
Inventor
Emeric Thibierge
Jean-François Loeillot
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Thibierge and Comar
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Thibierge and Comar
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Publication of EP1075431A1 publication Critical patent/EP1075431A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D27/00—Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents

Definitions

  • the present invention relates to a transparent or translucent paper product which is made by gluing two sheets of paper or a folded sheet of paper.
  • Opaque paper shells are already known which are made by folding a sheet to form a front face, a dorsal surface, the dorsal surface having two side flaps, a lower flap and a longitudinal upper flap.
  • the two side flaps are secured to the lower flap by means of a glue or an adhesive.
  • the method of depositing such a glue or adhesive is to take the glue or adhesive which is placed in a container by means of a metal blade which is secured to a cylinder.
  • the rotating cylinder allows the metal blade flush with the surface of the glue in the container to cause some of the glue or adhesive and then this glue or adhesive is deposited on the flaps of an envelope.
  • This glue deposit has irregular contours due to the deposition process using a blade and a cylinder. As the paper is opaque, the glue deposit is masked by the opacity of the paper.
  • the present invention aims to provide a transparent or translucent envelope, preferably made of paper, by folding a sheet to form two side flaps and a longitudinal flap and depositing a glue or an adhesive, the deposit of adhesive or glue being such that it gives an aesthetic appearance to the envelope.
  • a first problem that arises to make a transparent or translucent paper envelope is that when we put glue on a flap and that we secure the two sides of paper, the glue well that being translucent is visible because of the transparency of the paper. Therefore, if the glue deposit is made in an uncontrolled manner, the contours of the deposit are fuzzy and impart an unsightly appearance to the envelope.
  • a second problem that arises is that in the case where a translucent or transparent paper is used which is of the kind of a tracing paper, if the glue deposit has a width of the order of one centimeter, the water contained in the glue tends to curl the paper.
  • a tracing paper is a paper which is obtained by significantly refining the cellulose fibers of a paper pulp to form fibrils and thereby impart transparency to the paper. This important refinement of the fibers makes the tracing paper thus obtained very sensitive to water.
  • the invention therefore aims to solve these problems.
  • An object of the present invention is therefore to provide a product comprising at least two transparent or translucent faces, preferably paper, glued by means of a glue or an adhesive and having a certain aesthetic appearance.
  • Another object of the present invention is to provide such a product comprising a pressure-sensitive adhesive deposit that does not undergo deformation during the deposition of such a glue or adhesive.
  • the invention relates to a product comprising at least two transparent or translucent faces secured to one another by means of an adhesive or adhesive deposit having a specific shape, characterized in that the deposition of adhesive or glue is visible by transparency and reflection.
  • the product comprises a front face, a back face having several flaps secured by means of a glue deposit having a specific shape and visible by transparency and reflection.
  • EP-A-0 256 731 discloses a product having at least two transparent faces secured to one another by means of an adhesive deposit having a certain shape.
  • this document neither describes nor suggests that the adhesive deposit is visible in one way or another to impart an aesthetic appearance to the product.
  • the product is such that the glue deposit consists of three substantially equidistant parallel lines.
  • the glue deposit is in a direction parallel to the lateral edges of the upper face.
  • the product according to the invention comprises an upper flap provided with a deposit of adhesive, this adhesive or adhesive being sensitive to pressure and the deposit consisting of a plurality of points of substantially rectangular or square shape and being aligned. and being separated from each other.
  • the deposition of glue or adhesive on the flaps of the product is preferably made of a plurality of narrow strips separated from each other.
  • the invention further relates to a method of manufacturing such a product.
  • This method consists of cutting a transparent or translucent sheet, preferably paper, to deposit an adhesive or glue having a shape determined by a printing process preferably, the printing is carried out by a roller which soaks in a tray of glue or adhesive, which roll then comes into contact with a roller having cavities and in turn depositing the glue or adhesive on a next cylinder whose glue or adhesive deposit is thus set. This last cylinder prints the paper.
  • the glues or adhesives are transparent and when seen through the sheets, that is to say when seen by transparency, the glues or adhesives are clear while when seen by reflection, these glues or adhesives are dark. This optical effect is due to the transparency of the paper.
  • the glues or adhesives may be colored with a dye, a pigment or have pearlescent pigments, iridescent pigments and the like.
  • the transparent or translucent faces consist of a sheet or sheets of paper obtained by transparentization of an opaque paper sheet or obtained by refined refining of a paper pulp.
  • the invention relates to a product 1 according to the invention and more particularly an envelope.
  • This product comprises at least one dorsal surface 2 and a front face 3.
  • the faces 2 and 3 are obtained by folding along a line 4.
  • a product according to the invention which comprises a dorsal face and a front face 3 which are consisting of separate sheets.
  • the dorsal 2 and front 3 faces may preferably be made of a transparent or translucent paper. They can also be made of a transparent or translucent material which is for example a transparent or translucent polymer or a transparent / translucent polymer / paper composite material.
  • the sheets consist of a transparent or translucent paper, this paper may have been obtained by transparentization of an opaque paper with the aid of a transparency composition.
  • the sheets may also be made of transparent or translucent paper, of the tracing type manufactured and sold commonly in Europe. This paper is obtained by refining pulp so as to obtain a large number of fibrils which confer transparency to the paper. Transparent or translucent paper may be colored or may be white.
  • the dorsal sheet 2 and the front sheet 3 are The glue deposit has a predetermined shape according to the invention, and the term "predetermined shape" is understood to mean a form which is established in advance prior to the deposit of the adhesive. glue or adhesive.This shape is variable and may for example be a line, a circle, an arabesque, etc.
  • the glue or the adhesive are transparent in themselves.However, when the glue or the adhesive is deposited either on the dorsal face 2 or on the front face 3, when the faces are secured, after drying of the glue or adhesive, the glue or adhesive deposit is visible when looking at the produced by transparency, the glue or adhesive deposit is then clearer with respect to the clarity of the two dorsal and front faces 3. Thus, the fact of depositing a glue or an adhesive on one side makes the paper transparent with respect to its initial transparency.
  • the product of the present invention may for example be a pouch consisting of a front face 3 and a back face 2 having two flaps 4 and 5 which are secured to the lower flap by an adhesive deposit.
  • a pouch can be used for the packaging of compact discs and in this case, the pouch will be substantially square once secured.
  • the product of the present invention is an envelope as shown on the Figure 1 .
  • This envelope comprises a dorsal surface 2, a front face 3, side flaps 4 and 5 and an upper flap 6.
  • the lower flap is secured to the flaps 4 and 5 by means of glue and / or adhesive deposition.
  • the glue deposit is constituted on each side of the lower flap, an assembly 7 and 8 of three lines 9, 10, 11 and 12, 13 and 14 respectively. These lines are arranged for example parallel to the side edge 15 of the envelope formed by the fold between the flap 4 and the lower face 3 as shown for the set of lines 7.
  • the lines are arranged parallel to the lateral edge 16 of the lower flap, this side edge 16 of the lower flap being slightly inclined at an angle ⁇ relative to the side edge 15 'of the envelope .
  • the lines 9, 10, 11 and 12, 13, 14 have a length substantially equal to the height of the upper face 2.
  • the lines 9, 10, 11 are equidistant and the lines 12, 13, 14 respectively.
  • the lines are about 1 mm thick and about 1.5 mm apart.
  • the envelope comprises on its flap 6 a glue or a pressure-sensitive adhesive.
  • This adhesive deposit consists of a plurality of points 17 of substantially rectangular or square shape, in alignment parallel to the fold line 18 between the flap 6 and the front face 3.
  • the points 17 are aligned and are equidistant preferably one another.
  • These points may be a plurality of narrow strips separated from one another and parallel as shown in FIG. Figure 1 .
  • the dots 17 form a discontinuous strip when the dots of glue or adhesive 17 are deposited, there is no deformation of the transparent or translucent paper. Indeed, the deposits are punctual and therefore the paper on which the dots of glue or adhesive in solution in a solvent such as water and / or an alcohol is deposited only punctually with the action of the solvent water and / or alcohol.
  • the invention further relates to a method of manufacturing a transparent and / or translucent product formed of at least two faces of a paper which are secured with an adhesive or glue, depositing the adhesive or glue having a shape determined by a printing process.
  • a printing process is much more accurate than a deposit with a blade as realized in the prior art.
  • the deposited glue forms can be precise and sharp.
  • the manufacturing process is such that the glue or adhesive is deposited using a roller 19 which is dipped in a bath of adhesive or adhesive in solution as shown in FIG. figure 2 . This roller 19 then comes into contact with a roller 21 which has cavities in which the glue 20 is housed. Then, the roller 21 deposits the adhesive or the adhesive on a cylinder 22 whose adhesive deposit is thus adjusted. This last cylinder 21 in turn prints the transparent or translucent paper 23 which is unwound from a feed roll 24.
  • the adhesives or adhesives used according to the present invention can be colored with a pigment, but preferably should remain transparent so as to obtain the optical effect mentioned above.
  • the glues or adhesives used may be colored and not transparent. In this case, when we see the glue deposit in transparency, it will be darker than the entire upper sheet 2 and lower 3 and a different color.
  • Adhesives or adhesives according to the present invention may further comprise pearlescent pigments, iridescent pigments, iridescent pigments and the like.
  • a screen-printing method an off-set method, can be used, provided that the glue or adhesive deposit is precise and makes it possible to obtain defined shapes. This gives various optical effects thanks to the transparency of the paper, its color, the transparency or not of the glue, the coloring or not of the glue.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Description

La présente invention concerne un produit en papier transparent ou translucide qui est réalisé par collage de deux feuilles de papier ou d'une feuille de papier pliée.The present invention relates to a transparent or translucent paper product which is made by gluing two sheets of paper or a folded sheet of paper.

On connaît déjà des enveloppes en papier opaque qui sont réalisées par pliage d'une feuille pour former une face frontale, une face dorsale, la face dorsale comportant deux rabats latéraux, un rabat inférieur et un rabat supérieur longitudinal. Les deux rabats latéraux sont solidarisés avec le rabat inférieur au moyen d'une colle ou d'un adhésif. Le procédé de dépôt d'une telle colle ou adhésif consiste à prendre la colle ou l'adhésif qui est placé dans un récipient au moyen d'une lame métallique qui est solidaire d'un cylindre. Le cylindre en tournant permet que la lame métallique en affleurant la surface de la colle dans le récipient entraîne une partie de la colle ou de l'adhésif et ensuite cette colle ou cet adhésif est déposé sur les rabats d'une enveloppe. On obtient alors un dépôt de colle le long du rabat de l'enveloppe, ce dépôt de colle ayant une longueur inférieure à la hauteur du rabat et une largeur de quelques millimètres. Ce dépôt de colle a des contours irréguliers du fait du procédé de dépôt à l'aide d'une lame et d'un cylindre. Comme le papier est opaque, le dépôt de colle est masqué par l'opacité du papier.Opaque paper shells are already known which are made by folding a sheet to form a front face, a dorsal surface, the dorsal surface having two side flaps, a lower flap and a longitudinal upper flap. The two side flaps are secured to the lower flap by means of a glue or an adhesive. The method of depositing such a glue or adhesive is to take the glue or adhesive which is placed in a container by means of a metal blade which is secured to a cylinder. The rotating cylinder allows the metal blade flush with the surface of the glue in the container to cause some of the glue or adhesive and then this glue or adhesive is deposited on the flaps of an envelope. This produces a deposit of glue along the flap of the envelope, this glue deposit having a length less than the height of the flap and a width of a few millimeters. This glue deposit has irregular contours due to the deposition process using a blade and a cylinder. As the paper is opaque, the glue deposit is masked by the opacity of the paper.

La présente invention a pour but de fournir une enveloppe transparente ou translucide, de préférence en papier, par pliage d'une feuille pour former deux rabats latéraux et un rabat longitudinal et dépôt d'une colle ou d'un adhésif, le dépôt d'adhésif ou de colle étant tel qu'il confère un aspect esthétique à l'enveloppe.The present invention aims to provide a transparent or translucent envelope, preferably made of paper, by folding a sheet to form two side flaps and a longitudinal flap and depositing a glue or an adhesive, the deposit of adhesive or glue being such that it gives an aesthetic appearance to the envelope.

Un premier problème qui se pose pour fabriquer une enveloppe en papier transparent ou translucide est que lorsque l'on dépose de la colle sur un rabat et que l'on solidarise les deux faces de papier, la colle bien qu'étant translucide est visible du fait de la transparence du papier. Par conséquent, si le dépôt de colle est fait d'une manière non contrôlée, les contours du dépôt sont flous et confèrent un aspect inesthétique à l'enveloppe.A first problem that arises to make a transparent or translucent paper envelope is that when we put glue on a flap and that we secure the two sides of paper, the glue well that being translucent is visible because of the transparency of the paper. Therefore, if the glue deposit is made in an uncontrolled manner, the contours of the deposit are fuzzy and impart an unsightly appearance to the envelope.

Un second problème qui se pose est que dans le cas où on utilise un papier translucide ou transparent qui est du genre d'un papier calque, si le dépôt de colle a une largeur de l'ordre d'un centimètre, l'eau contenue dans la colle a tendance à faire gondoler le papier. En effet, un papier calque est un papier qui est obtenu par raffinage important des fibres de cellulose d'une pâte à papier pour former des fibrilles et pour conférer ainsi la transparence au papier. Ce raffinage important des fibres fait que le papier calque ainsi obtenu est très sensible à l'eau.A second problem that arises is that in the case where a translucent or transparent paper is used which is of the kind of a tracing paper, if the glue deposit has a width of the order of one centimeter, the water contained in the glue tends to curl the paper. Indeed, a tracing paper is a paper which is obtained by significantly refining the cellulose fibers of a paper pulp to form fibrils and thereby impart transparency to the paper. This important refinement of the fibers makes the tracing paper thus obtained very sensitive to water.

L'invention vise donc à résoudre ces problèmes.The invention therefore aims to solve these problems.

Un but de la présente invention est donc de fournir un produit comprenant au moins deux faces transparentes ou translucides, de préférence en papier, collées au moyen d'une colle ou d'un adhésif et ayant un certain aspect esthétique.An object of the present invention is therefore to provide a product comprising at least two transparent or translucent faces, preferably paper, glued by means of a glue or an adhesive and having a certain aesthetic appearance.

Un autre but de la présente invention est de fournir un tel produit comportant un dépôt de colle sensible à la pression et ne subissant pas de déformation lors du dépôt d'une telle colle ou adhésif.Another object of the present invention is to provide such a product comprising a pressure-sensitive adhesive deposit that does not undergo deformation during the deposition of such a glue or adhesive.

Ainsi, l'invention concerne un produit comprenant au moins deux faces transparentes ou translucides solidarisées l'une avec l'autre au moyen d'un dépôt d'adhésif ou de colle ayant une forme déterminée, caractérisé en ce que le dépôt d'adhésif ou de colle est visible par transparence et réflexion.Thus, the invention relates to a product comprising at least two transparent or translucent faces secured to one another by means of an adhesive or adhesive deposit having a specific shape, characterized in that the deposition of adhesive or glue is visible by transparency and reflection.

Selon un mode de réalisation de l'invention, le produit comporte une face frontale, une face dorsale comportant plusieurs rabats solidarisés au moyen d'un dépôt de colle ayant une forme déterminée et visible par transparence et réflexion.According to one embodiment of the invention, the product comprises a front face, a back face having several flaps secured by means of a glue deposit having a specific shape and visible by transparency and reflection.

Le document EP-A-0 256 731 (Moore Business Forms) décrit un produit comportant au moins deux faces transparentes solidarisées l'une avec l'autre au moyen d'un dépôt d'adhésif ayant une certaine forme. Cependant, ce document ne décrit ni ne suggère que le dépôt d'adhésif est visible d'une manière ou d'une autre pour conférer un aspect esthétique au produit.The document EP-A-0 256 731 (Moore Business Forms) discloses a product having at least two transparent faces secured to one another by means of an adhesive deposit having a certain shape. However, this document neither describes nor suggests that the adhesive deposit is visible in one way or another to impart an aesthetic appearance to the product.

De préférence, le produit est tel que le dépôt de colle est constitué de trois lignes parallèles sensiblement équidistantes.Preferably, the product is such that the glue deposit consists of three substantially equidistant parallel lines.

Selon un mode de réalisation préféré de l'invention, le dépôt de colle est dans une direction parallèle aux bords latéraux de la face supérieure.According to a preferred embodiment of the invention, the glue deposit is in a direction parallel to the lateral edges of the upper face.

De préférence, le produit selon l'invention comporte un rabat supérieur muni d'un dépôt de colle, cette colle ou adhésif étant sensible à la pression et le dépôt étant constitué d'une pluralité de points de forme sensiblement rectangulaire ou carrée et étant alignés et étant séparés les uns des autres.Preferably, the product according to the invention comprises an upper flap provided with a deposit of adhesive, this adhesive or adhesive being sensitive to pressure and the deposit consisting of a plurality of points of substantially rectangular or square shape and being aligned. and being separated from each other.

Le dépôt de colle ou d'adhésif sur les rabats du produit est de préférence constitué d'une pluralité de bandes étroites séparées les unes des autres.The deposition of glue or adhesive on the flaps of the product is preferably made of a plurality of narrow strips separated from each other.

L'invention concerne en outre un procédé de fabrication d'un tel produit. Ce procédé consiste à découper une feuille transparente ou translucide, de préférence en papier, à déposer un adhésif ou une colle ayant une forme déterminée par un procédé d'impression de préférence, l'impression est réalisée par un rouleau qui trempe dans un bac de colle ou d »adhésif, ce rouleau entrant ensuite en contact avec un rouleau comportant des cavités et à son tour déposant la colle ou l'adhésif sur un cylindre suivant dont le dépôt de colle ou d'adhésif est ainsi réglé. Ce dernier cylindre imprime à son tour le papier.The invention further relates to a method of manufacturing such a product. This method consists of cutting a transparent or translucent sheet, preferably paper, to deposit an adhesive or glue having a shape determined by a printing process preferably, the printing is carried out by a roller which soaks in a tray of glue or adhesive, which roll then comes into contact with a roller having cavities and in turn depositing the glue or adhesive on a next cylinder whose glue or adhesive deposit is thus set. This last cylinder prints the paper.

Selon l'invention, les colles ou adhésifs sont transparents et lorsqu'on les voit au travers des feuilles, c'est-à-dire lorsqu'on les voit par transparence, les colles ou adhésifs sont clairs tandis que lorsqu'on les voit par réflexion, ces colles ou adhésifs sont sombres. Cet effet d'optique est dû à la transparence du papier.According to the invention, the glues or adhesives are transparent and when seen through the sheets, that is to say when seen by transparency, the glues or adhesives are clear while when seen by reflection, these glues or adhesives are dark. This optical effect is due to the transparency of the paper.

Les colles ou adhésifs peuvent être colorés à l'aide d'un colorant, d'un pigment ou comporter des pigments nacrés, des pigments irisés et similaires.The glues or adhesives may be colored with a dye, a pigment or have pearlescent pigments, iridescent pigments and the like.

Les faces transparentes ou translucides sont constituées d'une feuille ou de plusieurs feuilles en papier obtenues par transparentisation d'une feuille de papier opaque ou obtenues par raffinage poussé d'une pâte à papier.The transparent or translucent faces consist of a sheet or sheets of paper obtained by transparentization of an opaque paper sheet or obtained by refined refining of a paper pulp.

La description suivante en regard des dessins annexés à titre d'exemple non limitatif permettra de comprendre commente l'invention peut être mise en pratique.

  • La Figure 1 est une vue d'un produit selon l'invention.
  • La Figure 2 est une vue schématique d'un procédé de fabrication du produit de la Figure 1.
The following description with reference to the accompanying drawings by way of non-limiting example will make it possible to understand how the invention can be put into practice.
  • The Figure 1 is a view of a product according to the invention.
  • The Figure 2 is a schematic view of a product manufacturing process of the Figure 1 .

L'invention concerne un produit 1 selon l'invention et plus particulièrement une enveloppe. Ce produit comprend au moins une face dorsale 2 et une face frontale 3. Les faces 2 et 3 sont obtenues par pliage selon une ligne 4. On peut envisager un produit selon l'invention qui comporte une face dorsale et une face frontale 3 qui sont constituées par des feuilles séparées. Les faces dorsale 2 et frontale 3 peuvent de préférence, être constituées d'un papier transparent ou translucide. Elles peuvent aussi être constituées d'un matériau transparent ou translucide qui est par exemple un polymère transparent ou translucide ou un matériau composite polymère/papier transparent ou translucide. De préférence, les feuilles sont constituées d'un papier transparent ou translucide, ce papier pouvant avoir été obtenu par transparentisation d'un papier opaque à l'aide d'une composition de transparentisation. Ce type de papier transparentisé est fabriqué et vendu couramment aux Etats-Unis d'Amérique. Les feuilles peuvent aussi être constituées d'un papier transparent ou translucide, du genre calque fabriqué et vendu couramment en Europe. Ce papier est obtenu par raffinage de pâte à papier de manière à obtenir un grand nombre de fibrilles qui confèrent la transparence au papier. Le papier transparent ou translucide peut être de couleur ou peut être blanc. La feuille dorsale 2 et la feuille frontale 3 sont solidarisées l'une avec l'(autre au moyen d'un dépôt de colle. Selon l'invention, le dépôt de colle a une forme prédéterminée. Par "forme prédéterminée" on entend une forme qui est établie au préalable avant le dépôt de la colle ou de l'adhésif. Cette forme est variable et peut par exemple être un trait, un cercle, une arabesque, etc. de plus, la colle ou l'adhésif sont transparents en eux-mêmes. Cependant, lorsque la colle ou l'adhésif est déposé soit sur la face dorsale 2 soit sur la face frontale 3, lorsque les faces sont solidarisée, après séchage de la colle ou de l'adhésif, le dépôt de colle ou d'adhésif est visible lorsqu'on regarde le produit par transparence. Le dépôt de colle ou d'adhésif est alors plus clair par rapport à la clarté des deux faces dorsale 2 et frontale 3. Ainsi, le fait de déposer une colle ou un adhésif sur une face transparentise le papier par rapport à sa transparence initiale.The invention relates to a product 1 according to the invention and more particularly an envelope. This product comprises at least one dorsal surface 2 and a front face 3. The faces 2 and 3 are obtained by folding along a line 4. It is possible to envisage a product according to the invention which comprises a dorsal face and a front face 3 which are consisting of separate sheets. The dorsal 2 and front 3 faces may preferably be made of a transparent or translucent paper. They can also be made of a transparent or translucent material which is for example a transparent or translucent polymer or a transparent / translucent polymer / paper composite material. Preferably, the sheets consist of a transparent or translucent paper, this paper may have been obtained by transparentization of an opaque paper with the aid of a transparency composition. This type of transparent paper is manufactured and sold in the United States of America. The sheets may also be made of transparent or translucent paper, of the tracing type manufactured and sold commonly in Europe. This paper is obtained by refining pulp so as to obtain a large number of fibrils which confer transparency to the paper. Transparent or translucent paper may be colored or may be white. The dorsal sheet 2 and the front sheet 3 are The glue deposit has a predetermined shape according to the invention, and the term "predetermined shape" is understood to mean a form which is established in advance prior to the deposit of the adhesive. glue or adhesive.This shape is variable and may for example be a line, a circle, an arabesque, etc. Moreover, the glue or the adhesive are transparent in themselves.However, when the glue or the adhesive is deposited either on the dorsal face 2 or on the front face 3, when the faces are secured, after drying of the glue or adhesive, the glue or adhesive deposit is visible when looking at the produced by transparency, the glue or adhesive deposit is then clearer with respect to the clarity of the two dorsal and front faces 3. Thus, the fact of depositing a glue or an adhesive on one side makes the paper transparent with respect to its initial transparency.

Lorsqu'on regarde les faces en réflexion, à savoir lorsque les faces frontale 3 et dorsale 2 sont placées sur un support sensiblement horizontal et qu'on les regarde à l'oeil nu, le dépôt de colle ou d'adhésif apparaît comme plus sombre par rapport à la clarté des deux faces dorsale 2 et frontale 3.When looking at the faces in reflection, namely when the front 3 and dorsal 2 faces are placed on a substantially horizontal support and that we look at the naked eye, the deposit of glue or adhesive appears as darker in relation to the clarity of the two dorsal and frontal faces 3.

Le produit de la présente invention peut être par exemple une pochette constituée d'une face frontale 3 et d'une face dorsale 2 comportant deux rabats 4 et 5 qui sont solidarisés avec le rabat inférieur par un dépôt de colle. Une telle pochette peut être utilisée pour l'emballage de disques compacts et dans ce cas, la pochette sera sensiblement carrée une fois solidarisée.The product of the present invention may for example be a pouch consisting of a front face 3 and a back face 2 having two flaps 4 and 5 which are secured to the lower flap by an adhesive deposit. Such a pouch can be used for the packaging of compact discs and in this case, the pouch will be substantially square once secured.

De préférence, le produit de la présente invention est une enveloppe telle que représentée sur la Figure 1. Cette enveloppe comporte une face dorsale 2, une face frontale 3, des rabats 4 et 5 latéraux et un rabat supérieur 6. Le rabat inférieur est solidarisé aux rabats 4 et 5 au moyen de dépôt de colle et/ou d'adhésif. Plus préférentiellement, le dépôt de colle est constitué de chaque côté du rabat inférieur, d'un ensemble 7 et 8 de trois lignes 9, 10, 11 et respectivement 12, 13 et 14. Ces lignes sont disposées par exemple parallèlement au bord latéral 15 de l'enveloppe formé par la pliure entre le rabat 4 et la face inférieure 3 comme on l'a représenté pour l'ensemble de lignes 7.Preferably, the product of the present invention is an envelope as shown on the Figure 1 . This envelope comprises a dorsal surface 2, a front face 3, side flaps 4 and 5 and an upper flap 6. The lower flap is secured to the flaps 4 and 5 by means of glue and / or adhesive deposition. More preferably, the glue deposit is constituted on each side of the lower flap, an assembly 7 and 8 of three lines 9, 10, 11 and 12, 13 and 14 respectively. These lines are arranged for example parallel to the side edge 15 of the envelope formed by the fold between the flap 4 and the lower face 3 as shown for the set of lines 7.

Selon un mode préférentiel de réalisation de la présente invention, les lignes sont disposées parallèlement au bord latéral 16 du rabat inférieur, ce bord latéral 16 du rabat inférieur étant légèrement incliné d'un angle α par rapport au bord latéral 15' de l'enveloppe. Les lignes 9, 10, 11 et 12, 13, 14 ont une longueur sensiblement égale à la hauteur de la face supérieure 2. Les lignes 9, 10, 11 sont équidistantes ainsi que les lignes 12, 13, 14 respectivement. Les lignes ont une épaisseur d'environ 1 mm et sont distantes d'environ 1,5 mm l'une de l'autre.According to a preferred embodiment of the present invention, the lines are arranged parallel to the lateral edge 16 of the lower flap, this side edge 16 of the lower flap being slightly inclined at an angle α relative to the side edge 15 'of the envelope . The lines 9, 10, 11 and 12, 13, 14 have a length substantially equal to the height of the upper face 2. The lines 9, 10, 11 are equidistant and the lines 12, 13, 14 respectively. The lines are about 1 mm thick and about 1.5 mm apart.

Selon un mode de réalisation préféré de la présente invention, l'enveloppe comporte sur son rabat 6 une colle ou un adhésif sensible à la pression. Ce dépôt de colle est constitué d'une pluralité de points 17 de forme sensiblement rectangulaire ou carrée, selon un alignement parallèle à la ligne de pliage 18 entre le rabat 6 et la face frontale 3. Les points 17 sont alignés et sont équidistants de préférence les uns des autres.According to a preferred embodiment of the present invention, the envelope comprises on its flap 6 a glue or a pressure-sensitive adhesive. This adhesive deposit consists of a plurality of points 17 of substantially rectangular or square shape, in alignment parallel to the fold line 18 between the flap 6 and the front face 3. The points 17 are aligned and are equidistant preferably one another.

Ces points peuvent être une pluralité de bandes étroites séparées les unes des autres et parallèles comme on l'a représenté sur la Figure 1.These points may be a plurality of narrow strips separated from one another and parallel as shown in FIG. Figure 1 .

Du fait que les points 17 forment une bande discontinue lorsque l'on dépose les points de colle ou d'adhésif 17, il ne se produit pas une déformation du papier transparent ou translucide. En effet, les dépôts sont ponctuels et donc le papier sur lequel on dépose les points de colle ou d'adhésif en solution dans un solvant tel que l'eau et/ou un alcool est soumis seulement ponctuellement à l'action du solvant eau et/ou alcool.Since the dots 17 form a discontinuous strip when the dots of glue or adhesive 17 are deposited, there is no deformation of the transparent or translucent paper. Indeed, the deposits are punctual and therefore the paper on which the dots of glue or adhesive in solution in a solvent such as water and / or an alcohol is deposited only punctually with the action of the solvent water and / or alcohol.

L'invention concerne en outre un procédé de fabrication d'un produit transparent et/ou translucide formé d'au moins deux faces d'un papier qui sont solidarisées à l'aide d'un adhésif ou d'une colle, le dépôt de l'adhésif ou de la colle ayant une forme déterminée par un procédé d'impression. Un tel procédé d'impression est beaucoup plus précis qu'un dépôt avec une lame tel que réalisé dans la technique antérieure. Ainsi, les formes de colle déposée peuvent être précises et nettes. Le procédé de fabrication est tel que l'on dépose la colle ou l'adhésif en utilisant un rouleau 19 qui trempe dans un bain 20 de colle ou d'adhésif en solution comme représenté sur la figure 2. Ce rouleau 19 entre ensuite en contact avec un rouleau 21 qui comporte des cavités dans lesquelles la colle 20 vient se loger. Puis, le rouleau 21 dépose la colle ou l'adhésif sur un cylindre 22 dont le dépôt d'adhésif est ainsi réglé. Ce dernier cylindre 21 imprime à son tour le papier 23 transparent ou translucide qui est déroulé d'un rouleau d'alimentation 24.The invention further relates to a method of manufacturing a transparent and / or translucent product formed of at least two faces of a paper which are secured with an adhesive or glue, depositing the adhesive or glue having a shape determined by a printing process. Such a printing process is much more accurate than a deposit with a blade as realized in the prior art. Thus, the deposited glue forms can be precise and sharp. The manufacturing process is such that the glue or adhesive is deposited using a roller 19 which is dipped in a bath of adhesive or adhesive in solution as shown in FIG. figure 2 . This roller 19 then comes into contact with a roller 21 which has cavities in which the glue 20 is housed. Then, the roller 21 deposits the adhesive or the adhesive on a cylinder 22 whose adhesive deposit is thus adjusted. This last cylinder 21 in turn prints the transparent or translucent paper 23 which is unwound from a feed roll 24.

Les colles ou adhésifs utilisés selon la présente invention peuvent être colorés à l'aide d'un pigment, mais de préférence, doivent rester transparents de manière à obtenir l'effet d'optique mentionné ci-dessus. Les colles ou adhésifs utilisés peuvent être colorés et non transparents. Dans ce cas, lorsque l'on verra le dépôt de colle en transparence, il sera plus sombre que l'ensemble de la feuille supérieure 2 et inférieure 3 et d'une couleur différente.The adhesives or adhesives used according to the present invention can be colored with a pigment, but preferably should remain transparent so as to obtain the optical effect mentioned above. The glues or adhesives used may be colored and not transparent. In this case, when we see the glue deposit in transparency, it will be darker than the entire upper sheet 2 and lower 3 and a different color.

Les colles ou adhésifs selon la présente invention peuvent en outre comporter des pigments nacrés, des pigments irisés, des pigments iridescents et similaires.Adhesives or adhesives according to the present invention may further comprise pearlescent pigments, iridescent pigments, iridescent pigments and the like.

On peut éventuellement utiliser un autre procédé d'impression que celui décrit précédemment pour effectuer le dépôt de colle. Par exemple, on peut utiliser un procédé en sérigraphie, un procédé off-set, à condition que le dépôt de colle ou d'adhésif soit précis et permette d'obtenir des formes définies. On obtient ainsi des effets optiques variés grâce à la transparence du papier, sa coloration, la transparence ou non de la colle, la coloration ou non de la colle.One may optionally use another printing method than that described above to perform the deposition of glue. For example, a screen-printing method, an off-set method, can be used, provided that the glue or adhesive deposit is precise and makes it possible to obtain defined shapes. This gives various optical effects thanks to the transparency of the paper, its color, the transparency or not of the glue, the coloring or not of the glue.

Claims (13)

  1. Product comprising at least two transparent or translucent faces (2, 3) fastened together by means of a deposit of adhesive or glue on one of the faces, characterised in that said deposit of adhesive or glue renders the paper more transparent compared to its initial transparency and in that said deposit of adhesive or glue has a particular shape, visible by transparency and transmission, which confers an aesthetic character on said product.
  2. Product according to claim 1, characterised in that lit includes a front face (3), a dorsal face (2), the dorsal face (2) including two lateral flaps (4, 5) and a bottom flap fastened to the lateral flaps (4, 5) by means of a deposit of glue having a particular shape and visible by transparency and transmission.
  3. Product according to claim 1 or 2, characterised in that the deposit of adhesive or glue consists of three substantially equidistant parallel lines (9, 10, 11).
  4. Product according to any one of the preceding claims, characterised in that the deposit of adhesive or glue is in a direction parallel to the lateral edges (16) of the dorsal face (2).
  5. Product according to any one of the preceding claims, characterised in that it includes a top flap (6) provided with a deposit of pressure-sensitive adhesive or glue, said deposit consisting of a plurality of spots (17) of substantially rectangular or square shape, aligned and spaced from each other.
  6. Product according to claim 5, characterised in that the deposit of glue or adhesive on the top flap (6) consists of a plurality of parallel narrow strips separated from each other.
  7. Product according to any one of the preceding claims, characterised in that the glues or adhesives are transparent and when seen by transparency through sheets the glues or adhesives are light whereas when seen by transmission these glues or adhesives are dark.
  8. Product according to any one of the preceding claims, characterised in that the glues or adhesives are coloured by a pigment, in particular a nacreous or iridescent pigment.
  9. Product according to any one of the preceding claims, characterised in that it consists of at least one sheet of transparent or translucent paper obtained by rendering transparent a sheet of opaque paper.
  10. Product according to any one of the preceding claims, characterised in that it consists of at least one sheet of transparent or translucent paper obtained by thorough refining of a paper pulp.
  11. Product according to any one of the previous claims, characterised in that it is an envelope.
  12. Method of fabrication of a product according to any one of claims 1 to 11, characterised in that it comprises the steps consisting of:
    a) cutting a first transparent or translucent sheet,
    b) depositing on that sheet a deposit of adhesive or glue having a predetermined shape, by a printing process comprising the steps of:
    - dipping a roller (19) into a tank of glue or adhesive (20), and then bringing the roller (19) into contact with a roller (21) including cavities,
    - having the roller (21) deposit the glue or adhesive onto a cylinder (22), whereof the deposit of glue or adhesive is thus adjusted,
    - printing the transparent or translucent sheet with the glue or adhesive deposited on the cylinder (22),
    c) fastening a second transparent or translucent sheet to said first transparent or translucent sheet.
  13. Method of fabrication of a product according to any one of claims 1 to 11, characterised in that it comprises the steps consisting of:
    a) cutting a first transparent or translucent sheet,
    b) depositing on that sheet a deposit of adhesive or glue having a predetermined shape, by a printing process chosen from a screen-printing process or an offset process,
    c) fastening a second transparent or translucent sheet to said first transparent or translucent sheet.
EP99913354A 1998-03-30 1999-03-30 Transparent or translucent paper envelope Expired - Lifetime EP1075431B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9804345A FR2790736B1 (en) 1998-03-30 1998-03-30 TRANSPARENT OR TRANSLUCENT PAPER ENVELOPE
FR9804345 1998-03-30
PCT/FR1999/000745 WO1999050149A1 (en) 1998-03-30 1999-03-30 Transparent or translucent paper envelope

Publications (2)

Publication Number Publication Date
EP1075431A1 EP1075431A1 (en) 2001-02-14
EP1075431B1 true EP1075431B1 (en) 2009-11-25

Family

ID=9524979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99913354A Expired - Lifetime EP1075431B1 (en) 1998-03-30 1999-03-30 Transparent or translucent paper envelope

Country Status (4)

Country Link
EP (1) EP1075431B1 (en)
DE (1) DE69941693D1 (en)
FR (1) FR2790736B1 (en)
WO (1) WO1999050149A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002014604A1 (en) * 2000-08-18 2002-02-21 Thibierge Et Comar Transparent or translucent paper comprising solid optical elements in its volume or at its surface

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579277A (en) * 1983-01-21 1986-04-01 Westvaco Corporation Detachable tip-on envelope
AU590663B2 (en) * 1986-07-25 1989-11-09 Honshu Seishi Kabushiki Kaisha Sealed letter
CA1267385A (en) * 1986-08-14 1990-04-03 Moore Business Forms, Inc. Banking envelope
CA2037604A1 (en) * 1990-03-12 1991-09-13 Michael A. Brown Envelope form for preparing a multi-sheet mail piece
DE4424595A1 (en) * 1994-07-13 1995-02-09 Nigge Werner Dr Jur Novel advertising surfaces
US5687903A (en) * 1995-03-31 1997-11-18 The Standard Register Company Envelope sheet and method of processing

Also Published As

Publication number Publication date
EP1075431A1 (en) 2001-02-14
FR2790736B1 (en) 2001-06-01
FR2790736A1 (en) 2000-09-15
DE69941693D1 (en) 2010-01-07
WO1999050149A1 (en) 1999-10-07

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