WO1999054220A1 - Feuille d'emballage et sachet d'emballage la comportant - Google Patents
Feuille d'emballage et sachet d'emballage la comportant Download PDFInfo
- Publication number
- WO1999054220A1 WO1999054220A1 PCT/FR1999/000951 FR9900951W WO9954220A1 WO 1999054220 A1 WO1999054220 A1 WO 1999054220A1 FR 9900951 W FR9900951 W FR 9900951W WO 9954220 A1 WO9954220 A1 WO 9954220A1
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- WIPO (PCT)
- Prior art keywords
- blank
- rigid
- packaging
- packaging bag
- bag according
- Prior art date
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Classifications
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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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
- B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/49—Internally supporting the, e.g. tubular, article during joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
- B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
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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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
- B65D65/22—Details
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
- B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
- B29C65/7443—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc by means of ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
- B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7162—Boxes, cartons, cases
- B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/006—Controlling; Regulating; Measuring; Safety measures
Definitions
- the present invention relates to a packaging sheet of the type comprising at least one flexible film. It also relates to a packaging sachet.
- the term sachet here designates both a pocket containing a set of separate articles, as well as a folded and sealed envelope around a product, the latter type of packaging being known by the name of horizontal "flow pack".
- packaging are available for packaging powdered food products, such as ground coffee or flour, or fractionated products such as candy or pasta.
- these products are frequently packaged in packaging bags made from a reel of polymer film.
- These sachets are produced on packaging machines of the “form fill seal” type which make it possible to simultaneously form, fill and seal the sachet. These sachets can therefore be produced easily and with a reduced manufacturing cost.
- a known alternative solution consists, conversely, of having prepackaged products in a sachet, inside a cardboard box.
- the invention aims to provide a packaging sheet allowing the packaging of products in sachets, having good stability, while retaining a low manufacturing cost.
- the invention relates to a packaging sheet of the aforementioned type, characterized in that it comprises, in at least one marked area, a rigid blank held integral with the or each flexible film.
- the packaging sheet includes one or more of the following characteristics:
- the rigid blank is integral with or each flexible film over its entire surface
- the rigid blank is self-supporting, when held vertically from its lower end; - It comprises two flexible films joined together, and the rigid blank is sandwiched between the two films;
- the two films are heat-sealable films
- a layer of adhesive is interposed between each flexible film and the rigid blank; - at least one flexible film is printed on its surface oriented towards the rigid blank;
- - It comprises a succession of rigid disjointed blanks, arranged along the length of at least one rigid film to form a packaging strip intended for the manufacture of several packages;
- - It comprises on at least one flexible film marking marks arranged in zones marked with respect to the rigid blanks;
- the rigid blank is made of one of the materials from flat cardboard, corrugated cardboard, microcannelated cardboard, a polymer or a copolymer loaded or not with mineral matter; and - the rigid blank has at least one crease or perforation line.
- the invention further relates to a packaging bag, characterized in that it comprises a sheet according to any one of the preceding claims, the lateral edges of which are folded in the zone comprising the rigid blank and are joined by a longitudinal sealing zone to define the trunk of the bag, which trunk delimits a space for receiving the products to be packaged, the bag comprising two transverse sealing zones for the ends of the sheet on either side of the rigid blank surrounding the products to be packaged, in flexible areas of the sheet devoid of the rigid blank;
- the packaging bag has one or more of the following characteristics: - the trunk of the bag is substantially tubular, and in that the creasing lines are parallel to one another along generatrices of the trunk delimiting adjacent sections in the rigid blank.
- FIG. 1 is a perspective view of a bag according to the invention, before opening;
- FIG. 2 is a perspective view of a bag according to the invention, after opening and partially empty;
- FIG. 3 is a perspective view of a reel formed of a strip according to the invention intended for the manufacture of the bags shown in Figures 1 and 2;
- FIGS. 4 and 5 are schematic views of cross sections of the strip of Figure 3 taken, respectively, along lines IV-IV and V-V;
- FIG. 6 is a schematic view of a machine for manufacturing the strip of Figure 3;
- FIG. 7 is a perspective view of the pressure roller used in the machine of Figure 6; and - Figure 8 is a schematic view of an installation for packaging food products in sachets according to the invention.
- the packaging bag shown in FIG. 1 is produced from a composite sheet according to the invention, the side edges of which are folded and are joined by a longitudinal sealing zone 12.
- the bag also comprises two zones of transverse sealing noted 14, 16. These are arranged at the ends of the sheet on either side of the products to be packaged.
- the bag 10 defines a trunk 18 of substantially parallelepiped shape. This trunk is defined by four adjacent rigid faces denoted 18A, 18B, 18C and 18D.
- the trunk 18 is delimited by a rigid blank 20, secured over its entire surface to at least one flexible film 32 extending on either side of the trunk 18 to define flexible extensions 24, 26 ending by the transverse sealing zones 14 and 16.
- the current part of the bag constituted by the trunk 18, defines a rigid tube or sheath for the reception of the products to be packaged, the tube being closed at its two ends by flexible extensions 24 and 26.
- the bag according to the invention can be placed upright on a horizontal plane resting on the flexible extension 26. The bag is then stable and has a regular geometric configuration due to the rigid trunk 18. After opening the bag in its upper part, as shown in the Figure 2, and after extracting part of the products initially contained in the sachet, it retains its general initial shape, each of the side walls 18A to 18D being self-supporting.
- extensions 24 and 26 are flexible.
- the flexible extension 24 can be folded into the space defined by the trunk 18 thus improving the visual appearance of the open bag.
- a strip is shown consisting of a continuous succession of packaging sheets according to the invention.
- the strip is wound to form a reel 28.
- This strip comprises two flexible films of heat-sealable polymer joined together.
- the rigid blanks 20 are distributed in zones marked between the two films 30, 32 between which they are enclosed.
- the film 30 carries laterally printed marking marks 34 delimiting the successive packaging sheets along the length of the strip.
- Each blank 20 is disposed substantially in the center of the sheet delimited by two successive marks.
- the blank 20 is bordered longitudinally on either side by margins 36, 38 consisting of the only flexible films joined together.
- transverse margins 40, 42 are reserved. ves on either side of each blank 18. They are intended to form the flexible sealing extensions 24 and 26.
- Each blank 20 has four parallel creasing lines 44A, 44B, 44C, 44D defining five rectangular sections denoted 46A, 46B, 46C, 46D and 46E.
- the crease lines are oriented along the length of the strip. They can be replaced by aligned perforations or any other treatment ensuring the creation of a line of least resistance of the blank favoring its subsequent folding.
- the five panels are intended to constitute the rigid lateral faces of the trunk 18.
- the panel 46C has a width greater than that of the other panels. It is intended to form the main face 18A of the bag.
- the sides 46B and 46D have equal widths and are intended to constitute the side faces 18B and 18D of the bag.
- the panels 46A and 46E each have a width equal to half the width of the panel 46C. They are intended to be joined side by side in order to constitute the rear face 18C of the bag.
- FIG. 4 a section of the strip is shown on a larger scale in the zone provided with the rigid blank 20.
- the blank 20 sandwiched between the heat-sealable flexible films 30 and 32.
- These are for example polyethylene, polyester, polypropylene, or polyamide films with a thickness of between 12 ⁇ m and 100 ⁇ m.
- the rigid blank 20 is formed for example of a material from flat cardboard, corrugated cardboard, microcannelated cardboard, a polymer or a copolymer loaded or not with mineral matter. Its thickness is adapted so that it is self-supporting, when held vertically from its lower end, considering the greatest length of the blank. In the case of a flat carton, the grammage of the blank is between 150 g / m 2 and 500 g / m 2 .
- the following table indicates, for several grammages of cartons used, the minimum TABER stiffnesses of cartons in the machine direction and in the cross direction to allow the trunk of the bag to keep its shape when the bag is placed vertically.
- the machine direction is the direction of movement of the tape during the manufacture of the bags. It corresponds to the height of the bag when it is placed vertically.
- the cross direction is perpendicular to the machine direction and corresponds to a direction perpendicular to the height of the bag.
- the TABER stiffness of the carton in the machine direction is therefore greater than 65.
- the grammage of the carton is between 220 g / m 2 and 270 g / m 2 and the TABER rigidity of the carton in the machine direction is greater to 80.
- the film 32 intended to form the interior wall of the bag is covered on its internal surface with a layer of adhesive 52.
- the adhesive forming the layers 50 and 52 is for example of the crosslinkable type based on polyisocyanate, on hot-melt material, on hot-activatable adhesive or on water-based adhesive.
- the cardboard blank 18 is embedded between the adhesive layers 50, 52 internally covering the films 30 and 32.
- the films 30, 32 are joined to each other, directly by through the adhesive layers 50, 52 in contact.
- FIG. 5 a section of the strip is shown in an area devoid of rigid blank, for example the transverse margin 40.
- the external film 30, associated with the ink layer 48 is associated with the internal film 32 by means of the adhesive layers 50, 52 united in a single film of adhesive extending over the facing surfaces of the two films.
- FIG. 6 a machine for manufacturing a strip such as that represented in FIG. 3.
- This machine is suitable for carrying out the lamination of the two films 30, 32 with insertion of the rigid blanks 20 in marked areas.
- the machine of FIG. 6 comprises two reels 60, 62 intended respectively for the continuous feeding of the flexible films 30 and 32,. Downstream of the reel 60, a printing device 64 of the internal surface of the film 30 is arranged. This printing device is intended on the one hand for applying the ink layer 48 and on the other hand for the positioning of the marking marks 34 on the longitudinal edge of the strip in marked zones.
- a sizing device 66 intended for placing the adhesive layer 50.
- a device 68 is provided downstream from the reel 62 for gluing the internal surface of the film 32. This device is intended for placing the adhesive layer 52.
- the external film 30 flows horizontally. Downstream of the gluing device 66, a robot 70 is provided for placing rigid blanks 20 previously grooved in identified areas.
- the robot 70 comprises means for detecting the marking marks 34, in order to position the rigid blanks 20 correctly with respect thereto.
- the rigid blanks 20 are distributed regularly over the length of the film 30 between the registration marks 34.
- the robot 70 is replaced by an adhesive carrying strip continuously conveying the blanks 20 on the film 30 retained on this strip.
- the carrier strip is brought into contact with the film 30 along a common section so that the blanks adhere to the film 30 through the adhesive layer 50 and thus separate from the carrier strip.
- the internal film 32 is applied to the blanks 20 and to the glued surface of the film 30.
- the films 30, 32 pass between two counter-rotating rollers 72, 74 defining a nip between their generators in touch. 8
- the upper roller 72 shown on a larger scale in FIG. 7, constitutes a strip forming roller.
- the roller 74 constitutes a support roller. It is made of rubber and has a smooth, continuous cylindrical surface.
- the shaping roller 72 is provided with three indentations 76 angularly distributed over the periphery of the roller. These imprints 76 are defined by recesses of constant depth corresponding substantially to the thickness of the rigid blanks 20. The surface of each imprint 76 corresponds to the development of a rigid blank 20 on the external surface of the cylinder 72.
- the laminating machine comprises a reel 78 intended for shaping the coil 28 shown in FIG. 3.
- the machine of FIG. 6 allows the continuous production of a strip such as that shown in FIG. 3.
- the rollers 72, 74 ensure by their rotation in the opposite direction during the circulation of the films 30, 32, in the direction of the arrow F1, the laminating of the films and the joining of the blanks rigid 20 over their entire surface with both of the films.
- the presence of the imprints 76 on the shaping roller 72 allows the inner film 32 to match the shape of the rigid blanks 20, thus guaranteeing satisfactory bonding of the films against each other in the immediate vicinity of the rigid blanks 20.
- FIG. 8 is shown an installation for packaging food products in sachets according to the invention such as that shown in FIG. 1.
- This installation comprises an unwinder 100 on which the reel 28 of FIG. 3 is installed.
- the latter is arranged with its horizontal axis.
- the strip circulates on turning rollers
- a shaper 104 is formed by a frustoconical wall internally defining a funnel 106 of introduction of the products to be packaged.
- the former 106 is extended downwards a tubular duct of rectangular section 108 around which the lateral edges of the strip are folded.
- each of the panels 46A to 46E is applied against a lateral surface of the conduit 108.
- the crease lines 44A to 44D are applied along the edges of the conduit 108 to cause the blank 20 to be shaped.
- the lateral margins 36, 38 are applied respectively to the inside and outside of the trunk 18 between sections 46E and 46A respectively.
- a heating sealing iron 110 is installed next to the overlapping area of the margins 36, 38. This is associated with jacks 112 intended to ensure an alternating movement of the sealing iron from a retracted position, represented in FIG. 8 , to a welding position, the iron then being in contact with the folded edges of the strip and pressing them against the tube 108 to perform the longitudinal weld 12.
- two jaws are arranged transversely oscillating sealing 114. These jaws are heated and are suitable for simultaneously carrying out transverse seals 14 and 16 of two successive sachets.
- the jaws 114 are mounted movable in a plane perpendicular to the axis of the tube 108. They are movable between a position spaced from one another allowing the passage of a bag and a welding position where the jaws are applied l one against the other substantially along the median longitudinal plane of the tube 108.
- a conveyor 116 for receiving the sealed bags.
- a pressing member 118 movable vertically under the like of a jack 120.
- the pressing member 118 is adapted to fold the flexible extension 26 in order to ensure the plating of the lower transverse seal 16 against the surface bottom of the bag.
- the conditioning system operates as follows.
- the coil 28 is progressively unwound step by step in the direction of the arrow F2. It flows successively around the shaper 104 and the conduit 108 until it defines a tube.
- the sealing iron 110 ensures the realization 10 tion of the longitudinal weld 12.
- the funnel 106 is loaded with the contents of a sachet. By gravity, the products fall to the bottom of the tube closed by the sealing zone 14.
- the jaws 114 are separated, the strip is then advanced by a step whose length corresponds to the height of a sachet. The jaws are then brought together to enclose the flexible section of the tube defined between the two successive rigid blanks.
- the jaws 114 thus simultaneously form the transverse sealing zone 16 of the previously filled bag and the upper transverse sealing zone 14 of the following bag. They simultaneously ensure the sectioning between the two consecutive sachets, which allows the lower sealed sachet to fall under the action of its own weight.
- the sealed bags are transported on the conveyor 116. Passing under the pressing member 118, they have their lower flexible extension 26 folded down.
- the flexible extension 26 of each sachet is secured to the base of the trunk 18, for example by a heating iron applied to it downstream of the pressing member 118.
- Such a packaging sachet can be carried out on a conventional machine for manufacturing sachets, without it being necessary to make substantial modifications.
- the rigid structure being integrated in the flexible film a single packaging operation is sufficient to obtain a stable packaging that can be stacked.
- a packaging sheet according to the invention can be implemented in packaging of the horizontal “flow pack” type.
- This type of packaging is intended to receive rigid products, such as a chocolate bar.
- the packaging then consists of a sheet folded around the product.
- the sheet is longitudinally sealed by a longitudinal sealing area.
- the tube thus formed is closed at each end by transverse sealing zones.
- Such packaging is produced from a horizontally circulating strip on which the products to be packaged are deposited at regular intervals.
- the strip is folded around the products, the side edges being sealed one on the other in the upper part of the product.
- the rigid blank contained in the sheet defines a protective sheath for the packaged product.
- the longitudinal sealing zone is produced by bringing into contact and sealing the opposing surfaces of the sheet with overlapping thereof.
- the longitudinal sealing area is of the “flesh against leather” type.
- the two longitudinal edges of the sheet can be folded over one another so that these are applied against one another along the inner surface of the sheet.
- the longitudinal sealing area is then of the “flesh for flesh” type. This type of longitudinal sealing is carried out by any known type of suitable machine.
- packaging sheets described here are presented in the form of strips comprising several sheets arranged in succession, the packaging sheets can be separate and constitute formats, each suitable for packaging.
- the blank is secured over its entire surface to the internal and external flexible films.
- the blank can be held integral between the two films without being directly attached thereto.
- the two films are then for example joined to one another at the periphery of the blank, so that the blank is retained sandwiched between the two films, without however being glued to one or the other of the films.
- the assembly of the packaging sheet, and in particular the joining of the blank with each flexible film can be achieved by any suitable technique, and in particular by lamination extrusion, by hot calendering, by ultrasonic welding, or by lamination extrusion, followed by hot calendaring.
- the packaging described here is of substantially parallelepiped shape. However, any other shape can be envisaged, in particular a cylindrical trunk of circular section.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU33377/99A AU3337799A (en) | 1998-04-21 | 1999-04-21 | Packaging film and packaging bag comprising same |
EP99914639A EP1073592A1 (fr) | 1998-04-21 | 1999-04-21 | Feuille d'emballage et sachet d'emballage la comportant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9804975A FR2777548B1 (fr) | 1998-04-21 | 1998-04-21 | Feuille d'emballage et sachet d'emballage la comportant |
FR98/04975 | 1998-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999054220A1 true WO1999054220A1 (fr) | 1999-10-28 |
Family
ID=9525489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/000951 WO1999054220A1 (fr) | 1998-04-21 | 1999-04-21 | Feuille d'emballage et sachet d'emballage la comportant |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1073592A1 (fr) |
AU (1) | AU3337799A (fr) |
FR (1) | FR2777548B1 (fr) |
WO (1) | WO1999054220A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018049496A1 (fr) * | 2016-09-14 | 2018-03-22 | Papp Yuri | Emballage durable et flexible et procédé de préparation dudit emballage |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4173731B2 (ja) * | 2000-08-29 | 2008-10-29 | ソシエテ・デ・プロデュイ・ネスレ・エス・アー | 製品を収蔵する容器およびその製造方法 |
EP1411001B1 (fr) * | 2000-08-29 | 2006-09-27 | Société des Produits Nestlé S.A. | Contenant pour produit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2330015A (en) * | 1939-08-16 | 1943-09-21 | Stokes & Smith Co | Container |
FR2421816A1 (fr) * | 1978-04-07 | 1979-11-02 | Dupuy Eng Sa | Nouvel emballage pellicule et procede de fabrication |
US4622693A (en) * | 1985-04-22 | 1986-11-11 | Cvp Systems, Inc. | Collapsible bag and liner combination |
US4738546A (en) * | 1985-04-06 | 1988-04-19 | Sengewald Karl H | Package bag and method of manufacturing the same |
EP0835748A1 (fr) * | 1996-10-08 | 1998-04-15 | Fabriques De Tabac Reunies S.A. | Procédé de dispositif de préparation d'une ébauche d'emballage, et cartouche de cigarettes |
-
1998
- 1998-04-21 FR FR9804975A patent/FR2777548B1/fr not_active Expired - Lifetime
-
1999
- 1999-04-21 EP EP99914639A patent/EP1073592A1/fr not_active Withdrawn
- 1999-04-21 AU AU33377/99A patent/AU3337799A/en not_active Abandoned
- 1999-04-21 WO PCT/FR1999/000951 patent/WO1999054220A1/fr not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2330015A (en) * | 1939-08-16 | 1943-09-21 | Stokes & Smith Co | Container |
FR2421816A1 (fr) * | 1978-04-07 | 1979-11-02 | Dupuy Eng Sa | Nouvel emballage pellicule et procede de fabrication |
US4738546A (en) * | 1985-04-06 | 1988-04-19 | Sengewald Karl H | Package bag and method of manufacturing the same |
US4622693A (en) * | 1985-04-22 | 1986-11-11 | Cvp Systems, Inc. | Collapsible bag and liner combination |
EP0835748A1 (fr) * | 1996-10-08 | 1998-04-15 | Fabriques De Tabac Reunies S.A. | Procédé de dispositif de préparation d'une ébauche d'emballage, et cartouche de cigarettes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018049496A1 (fr) * | 2016-09-14 | 2018-03-22 | Papp Yuri | Emballage durable et flexible et procédé de préparation dudit emballage |
Also Published As
Publication number | Publication date |
---|---|
EP1073592A1 (fr) | 2001-02-07 |
FR2777548B1 (fr) | 2000-07-07 |
AU3337799A (en) | 1999-11-08 |
FR2777548A1 (fr) | 1999-10-22 |
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