Classifications

• • 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 flexible 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 produced by gluing two sheets of paper or a folded sheet of paper.
• Opaque paper envelopes are already known which are produced by folding a sheet to form a front face, a dorsal face, the dorsal face comprising two lateral flaps, a lower flap and a longitudinal upper flap.
• the two side flaps are secured to the lower flap by means of glue or adhesive.
• the method of depositing such a glue or adhesive consists in taking the glue or the 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 by flush with the surface of the glue in the container to entrain part of the glue or the adhesive and then this glue or this adhesive is deposited on the flaps of an envelope.
• An adhesive deposit is then obtained along the flap of the envelope, this adhesive 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 deposit of glue is masked by the opacity of the paper.
• the object of the present invention is to provide a transparent or translucent envelope, preferably made of paper, by folding a sheet to form two lateral flaps and a longitudinal flap and depositing an adhesive or an adhesive, depositing adhesive or glue being such that it gives an aesthetic appearance to the envelope.
• a first problem which arises in manufacturing a transparent or translucent paper envelope is that when adhesive is applied to a flap and the two sides of the paper are joined, the adhesive is well that being translucent is visible due to the transparency of the paper. Consequently, if the adhesive deposit is made in an uncontrolled manner, the contours of the deposit are blurred and give an unattractive appearance to the envelope.
• a second problem which arises is that in the case where a translucent or transparent paper is used which is of the type of a tracing paper, if the adhesive deposit has a width of the order of one centimeter, the water contained in the glue tends to cause the paper to curl.
• a tracing paper is a paper which is obtained by significant refining of the cellulose fibers of a paper pulp to form fibrils and thus to confer transparency on the paper. This significant refining 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 made of paper, bonded by means of an adhesive or an adhesive and having a certain aesthetic appearance.
• Another object of the present invention is to provide such a product comprising a deposit of pressure-sensitive glue and not undergoing 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 a deposit of adhesive or glue, characterized in that the deposit of adhesive or glue has a determined and visible form by transparency and transmission.
• the product comprises a front face, a dorsal face, the dorsal face comprising several flaps secured by means of a glue deposit having a determined shape and visible by transparency and transmission.
• the product is such that the adhesive deposit consists of three substantially equidistant parallel lines.
• the adhesive 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 glue, this glue 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 deposit of glue or adhesive on the flaps of the product preferably consists of a plurality of narrow strips separated from each other and parallel.
• the invention further relates to a method of manufacturing such a product.
• This process consists in cutting a transparent or translucent sheet, preferably in paper, in depositing an adhesive or an adhesive having a shape determined by a printing process.
• the printing is carried out by a roller which dips in a container of glue or adhesive, this roller then coming into contact with a roller comprising cavities and in turn depositing the glue or the adhesive on a following cylinder whose deposit of glue or adhesive is thus regulated.
• This last cylinder in turn prints the paper.
• the glues or adhesives are transparent and when we see them through the sheets, that is to say when we see them by transparency, the glues or adhesives are clear while when we see them by transmission, these glues or adhesives are dark. This optical effect is due to the transparency of the paper.
• the glues or adhesives can be colored using a dye, a pigment or include pearlescent pigments, iridescent pigments and the like.
• the transparent or translucent faces consist of a sheet or several sheets of paper obtained by transparentization of an opaque sheet of paper or obtained by advanced refining of a paper pulp.
• Figure 1 is a view of a product according to the invention
• Figure 2 is a schematic view of a process for manufacturing the product of Figure 1
• the invention relates to a product 1 according to the invention and more particularly to an envelope
• This product comprises at least one dorsal face 2 and one 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 constituted by separate sheets
• the dorsal 2 and front 3 faces can preferably be made of transparent or translucent paper They can also be made of a transparent material or translucent which is for example a transparent or translucent polymer or a composite polymer / transparent or translucent paper
• the sheets are made of a transparent or translucent paper, this paper being able to have been obtained by transparentization of an opaque paper with l using a clearing composition This type of clearing paper is commonly produced and sold in the United States from America
• the sheets can also be made of transparent or translucent paper, of the tracing type manufactured and sold commonly in Europe.
• the adhesive deposit has a predetermined shape.
• predetermined shape means a shape which is established beforehand before the deposition of the glue or the adhesive. This shape is variable and can for example be a line, a circle, an arabesque, etc.
• the glue or adhesive are transparent in themselves. However, when the glue or adhesive is deposited either on the back face 2 or on the front face 3, when the faces are joined, after the glue or adhesive has dried, the deposit of glue or adhesive is visible when looking at the product through transparency. The deposition of glue or adhesive is then lighter in relation to the clarity of the two dorsal 2 and front 3 faces. Thus, the fact of depositing an adhesive or an adhesive on one side makes the paper transparent compared to its initial transparency.
• the product of the present invention may for example be a pouch consisting of a front face 3 and a dorsal face 2 comprising two flaps 4 and 5 which are secured to the lower flap by a deposit of glue.
• a pocket can be used for packaging compact discs and in this case, the pocket will be substantially square once secured.
• the product of the present invention is an envelope as shown in Figure 1.
• This envelope has a dorsal face 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 deposition of glue and / or adhesive.
• the adhesive deposit is formed on each side of the lower flap, of a set 7 and 8 of three lines 9, 10, 11 and respectively 12, 13 and 14. These lines are arranged for example parallel to the lateral 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 lateral edge 16 of the lower flap being slightly inclined at an angle ⁇ relative to the lateral 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 as well as the lines 12, 13, 14 respectively.
• the lines are about 1 mm thick and are about 1.5 mm apart from each other.
• the envelope comprises on its flap 6 an adhesive or a pressure-sensitive adhesive.
• This adhesive deposit consists of a plurality of points 17 of substantially rectangular or square shape, in an alignment parallel to the fold line 18 between the flap 6 and the front face 3.
• the points 17 are aligned and are preferably equidistant one another.
• the dots 17 form a discontinuous band 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 are deposited in solution in a solvent such as water and / or an alcohol is subjected only punctually to the action of the solvent water and / or alcohol.
• a solvent such as water and / or an alcohol
• the invention further relates to a method of manufacturing a transparent and / or translucent product formed from at least two faces of a paper which are joined together using an adhesive or glue, the deposition of the adhesive or glue having a shape determined by a printing process.
• a printing process is much more precise than a deposition with a blade as carried out in the prior art.
• the forms of glue deposited can be precise and clear.
• the manufacturing process is such that the glue or adhesive is deposited using a roller 19 which dips in a bath 20 of glue or adhesive in solution as shown in FIG. 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 glue or the adhesive on a cylinder 22, the adhesive deposition of which is thus regulated. This last cylinder 21 in turn prints the transparent or translucent paper 23 which is unwound from a supply roller 24.
• the glues or adhesives used according to the present invention can be colored with the aid of a pigment, but preferably must remain transparent so as to obtain the optical effect mentioned above.
• the glues or adhesives used can be colored and not transparent. In this case, when we see the deposit of glue in transparency, it will be darker than the whole of the upper sheet 2 and lower 3 and of a different color.
• the glues or adhesives according to the present invention can also comprise pearlescent pigments, iridescent pigments, iridescent pigments and the like.
• another printing process for example, one can use a screen printing process, an off-set process, provided that the deposition of glue or adhesive is precise and allows defined shapes to be obtained.
• Various optical effects are thus obtained thanks to the transparency of the paper, its coloring, 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)

Applications Claiming Priority (3)

Publications (2)

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Family Cites Families (6)

• 1998
  • 1998-03-30 FR FR9804345A patent/FR2790736B1/fr not_active Expired - Fee Related
• 1999
  • 1999-03-30 EP EP99913354A patent/EP1075431B1/de not_active Expired - Lifetime
  • 1999-03-30 WO PCT/FR1999/000745 patent/WO1999050149A1/fr not_active Ceased
  • 1999-03-30 DE DE69941693T patent/DE69941693D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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