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
  • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
  • B65D31/12—Bags or like containers made of paper and having structural provision for thickness of contents with two or more compartments
• • 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
  • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
  • B65D75/44—Individual packages cut from webs or tubes
  • B65D75/46—Individual packages cut from webs or tubes containing articles
• • 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
  • B65D75/54—Cards, coupons, or other inserts or accessories
• • 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
  • B31B2155/00—Flexible containers made from webs
• • 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
  • B31B2155/00—Flexible containers made from webs
  • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
• • 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
  • B31B2155/00—Flexible containers made from webs
  • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
  • B31B2155/0012—Flexible containers made from webs by folding webs longitudinally having their openings facing in the direction of movement
• • 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
  • B31B2160/00—Shape of flexible containers
  • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
• • 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
  • B31B2170/00—Construction of flexible containers
  • B31B2170/30—Construction of flexible containers having corrugated or pleated walls
• • 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
  • B31B2241/00—Making bags or boxes intended for a specific use
• • 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
  • B31B70/74—Auxiliary operations
  • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
  • B31B70/812—Applying patches, strips or strings on sheets or webs
  • B31B70/8123—Applying strips

Definitions

• the present invention relates to a method of manufacturing a packaging bag, and the packaging bag obtained.
• the invention relates, essentially but not exclusively, to the field of food, and more particularly that of fast food, the packaging bag obtained by the manufacturing method according to the invention being able to be used for pack food products such as sandwiches or other similar products.
• a packaging bag comprising two compartments, one of which contains a napkin.
• the formation of the two compartments is obtained by adding an inner wall which separates the inside of the bag, while one of the compartments contains a towel.
• the towel remains held by the bottom of the bag so it is necessary to provide perforations to be able to tear and extract the bag.
• EP 1 203 726 proposes a bag on an outer face of which is releasably attached a towel. This towel is glued on the outer face through a portion connected to the rest of the towel by a perforated area and therefore breakable.
• the purpose of the present invention is to provide a packaging bag to overcome these various disadvantages, but the primary object of the present invention is to provide an industrial manufacturing process for continuously producing such a packaging bag to a minimal cost, and especially using the existing means of production.
• Various packaging production techniques are known, it is necessary to distinguish the packages made from paper sheets shaped and glued, and those based on sheets of sealable materials, according to the technique called "form seal" which is described in WO 2003 07331, US 4,009,778 and US 5,407,278, for example.
• the present invention therefore aims to remedy the various aforementioned drawbacks and relates to a continuous manufacturing process of a paper packaging bag incorporating an extractable element, such as a towel, fully implemented by means of existing production tools.
• the method of manufacturing a packaging bag according to the invention is of the type consisting in forming on a rotating machine a hose by the longitudinal bending of at least one strip of flexible material which is unwound and driven, and then optionally to sticking, after a sizing operation, the lateral edges of said strip, then separating said hose in sections and forming the bottom of each of the bags to form a compartment and it is essentially characterized in that it consists:
• the separation operation is carried out in the following manner: one weakens, simultaneously, or possibly simultaneously, the band before formation of the casing, as well as the other one bandaged ,
• the casing and the other band are expanded so that the zone of weakness of said casing is offset with respect to the zone of weakness of said other band; said casing and said band are simultaneously torn off.
• the embrittlement of the two strips can be made simultaneously on the same tool, or simultaneously or not on two different tools, one for each band, but respecting a particular setting.
• the phase shift is carried out by making the paths of different lengths borrow from the casing and from the other band.
• the separation operation is carried out as follows:
• the gut and the other band are driven at different speeds
• the casing and the other band are cut transversely and simultaneously, or the casing and the other band are simultaneously weakened and torn off simultaneously or almost simultaneously.
• the manufacturing method according to the invention makes it possible, by using an existing rotary machine, to produce packaging bags incorporating a manufacturing extractable element, these bags can thus consist, not limited in sandwich bags incorporating an extractable towel.
• the process according to the invention makes it possible to produce sachets of different shapes and having various characteristics.
• the manufacturing method consists in forming in addition to the main compartment, at least one secondary compartment, or by a bonding operation of the lateral edges of the band forming the hose, in at least two distinct lines, continuous or not, and / or by at least one longitudinal folding operation of a portion of said strip, and / or by the addition of at least one additional internal or external wall, secured to the bag at least by pinching during the formation of the bottom and after the unwinding of another strip, while simultaneously is unrolled the other band so as to take place inside said secondary compartment.
• the lateral edges of the band of formation of the casing are secured to the remainder of the latter, by gluing, according to at least two distinct lines, continuous or not, so as to delimit between these two lines a region constituting the secondary compartment.
• the band of formation of the casing is folded longitudinally to form, from one edge of said band, a flap, folded towards the inside or out, so as to form the secondary compartment.
• another strip is unrolled, parallel to the unwinding of the band of formation of the casing, it is secured by its lateral edges, by the outside one of the walls of the casing, so as to form the secondary compartment.
• another strip is unrolled, parallel to the course of the forming band of the casing, and inside the casing, another strip, and is secured by gluing and / or by pinching in the bottom.
• the manufacturing method according to the invention also allows to provide upstream of the combination of the napkin and the bag, a printing station of said towel, or other processing stations.
• the packaging bag obtained by the method according to the invention can be flat, bellows, flat bottom or square bottom, or other.
• the other band advantageously consists of paper of the towel type namely cellulose wadding for example, so that, of manufacture, the napkin is integrated in the bag.
• the manufacturing method as described allows many variations of the product obtained.
• the method according to the invention is reserved for the manufacture, from a continuous material, of packaging bags, containing extractable element manufacturing material from a continuous material.
• FIG. 2 represents a schematic view reproducing steps of a variant of the manufacturing method according to the invention.
• - Figure 3 shows a perspective view of a packaging bag manufactured by the method according to the invention.
• FIG. 4 shows a schematic cross-sectional view of the same packaging bag.
• FIG. 5 shows a partial schematic plan view of an element for the manufacture of the same packaging bag.
• the bag 1 is made from a strip 2 of flexible material such as paper, packaged in a roll 10 while the towel S is made from a strip 3 of flexible material such as wadding, packed in a roll
• the formation of the bag S is carried out in a conventional manner, that is to say that the band 2 is shaped in a casing 21 by the approximation, the overlap and the joining of its lateral edges, before the formation of the bottom obtained by a transverse folding.
• the band 3 is made to run inside the casing 21 in formation, and, for obtain the bag 1 containing its extractable towel, the whole is subjected to a succession of operations.
• One of these operations is to cut the hose 21 into sections 22 and the band 3 into segments 31.
• the casing 21 is driven at a speed greater than that of the band 3, and through cutting means C, the casing 21 and the band 3 are cut simultaneously to form a section 22 and a segment 31.
• the speed difference creates the offset that allows the formation of the bottom 10 of the bag 1.
• the cut can be replaced by simultaneous or almost simultaneous operations of embrittlement and tearing.
• the band 3 can undergo before its introduction into the casing 21, various transformations, such as a longitudinal fold for example.
• FIG. 3 there can be seen a packaging bag 4 according to the invention, also manufactured by the method according to the invention, but having differences with respect to the bag 1.
• the bag 4, as can be the bag 1, is, not limited to, bellows, and is made from a strip 5 of material such as paper, shaped into a hose by the approximation and recovery of side edges.
• This packaging bag 4 thus comprises two end walls 41 and 42 connected laterally by two side walls 43 and 44 folded to form bellows. It also comprises a bottom 45 obtained by the folding of the front walls 41 and 42, and an opening 46 allowing access to the interior of a compartment 47 delimited by the walls 41, 42, 43 and 44, and the bottom 45.
• the packaging bag 4 further comprises a compartment 48 created at the front wall 41, which comes from the doubling thereof.
• the lateral portions 50 and 51 of the strip 5 are not secured to one another by their extreme edges, respectively 52 and 53, to form the wall 41, but the latter are secured to the rest of the strip 5 in two regions distant from each other, through lines of glue 54 and 55 respectively deposited on the outer face of the lateral portion 50, or on the inner face of the lateral portion 51, so as to release between these two lines, an unsized area which constitutes the compartment 48, and in which is housed a towel S.
• FIG. 5 a portion of a band 5 can be seen before the formation of the casing.
• the bags produced by means of the strip 5 shown in FIG. 5 are provided with cutouts facilitating opening and access to the inside of the compartments, namely a cutout 56 made in the wall 42 and intended to equip the edge of the compartment 47, and a cutout 57 made in the lateral portion 41 and intended to equip the edge of the compartment
• the bag 6 is made from a strip
• the end edge 53 of the part 51 is secured by gluing, through a line of glue C, not to the end edge 52 of the lateral part 50, but on the latter at a crease.
• longitudinal 58 which creates a flap 59 forming with the rest of the lateral portion 50, a compartment
• this compartment 48 is closed lower during the formation of the bottom, and that it can incorporate, manufacturing, an extractable element, not shown, such as a towel for example.
• an extractable element not shown, such as a towel for example.
• the bag 6 ' which consists of a variant of the bag 6, namely that it further comprises at the end of the flap 59, another flap 59' folded to extend between the flap 59 and the part lateral 50, inside the compartment 48 and intended to allow increased enveloping of the extractable element, not shown.
• the bag 6 constitutes another variant of the bag 6, in that the end edge 53 of the lateral part 51 is not secured to the end edge 52 of the lateral part 50, but to the latter therefore present within the compartment 47 an extension 50 ', which has at its end a flap 59 which is folded not inwardly of the bag, but outwardly so as to be placed opposite the lateral part 51.
• the bag 7 which is also made from a strip 5 of flexible material, such as paper, shaped in a hose by bonding, by gluing, between them the extreme edges 52 and 53 of the side portions 50 and 51 of the strip 5 to form a compartment 47.
• the bag 7 further comprises an inner wall 70, extending over the entire width, or substantially the entire width, of the front wall 41, and intended to be secured to the rest of the bag during the formation of the bottom thereof.
• the inner wall 70 is made of a portion of another web of flexible material, such as paper, fed simultaneously to the web 5 during the manufacturing process.
• the wall 70 creates the doubling of the front wall 41, and thus creates the compartment 48, which can contain an extractable element, such as for example a towel, and which comes from another strip of flexible material delivered simultaneously to the other strips.
• an extractable element such as for example a towel
• FIG. 10 is represented the bag 8 which is also made from a strip 5 of flexible material, such as paper, shaped in a hose, by joining together extreme edges 52 and 53 of the lateral portions 50 and 51 of the strip 5, to form a compartment 47.
• a strip 5 of flexible material such as paper
• the bag 8 further comprises an outer wall 80, extending over the entire width, or substantially the entire width, of the front wall 41, and intended to be secured thereto by bonding its lateral extreme edges 81 and 82, through lines of glue C, as well as by the formation of the bottom of the bag.
• the outer wall 80 is made of a portion of another web of flexible material, such as paper, fed simultaneously to the web 5 during the manufacturing process.
• the outer wall 80 creates the doubling of the front wall 41, and thus creates the compartment 48, which can contain an extractable element, such as for example a towel, and which comes from another strip of flexible material discharged simultaneously to the other strips .
• FIG 11 is shown the bag 9, which is particularly suitable for packaging sandwiches of the type comprising, for example and not limited to, a roll of bread having a side opening through which are introduced ingredients. Such sandwiches are generally presented in approximately wedge shaped pouches.
• the bag 9, which constitutes a particular evolution of the bag 8, is made from a strip 5 of flexible material, such as paper, shaped in a casing, but this is not closed, the front walls 41 and 42 being not connected, except by the bottom, not shown, so as to create a lateral opening 90 for the introduction of the sandwich.
• the front wall 41 is lined externally by a wall 91 secured by its two side edges 92 and 93 through lines of adhesive C, and preferably gripped during the formation of the bottom.
• the doubling of the wall 41 by the wall 91 creates a compartment 48, which may contain an extractable element, such as for example a towel, and which comes from another strip of flexible material delivered simultaneously to the other strips.
• an extractable element such as for example a towel
• the doubling of the front wall 41 to form the compartment 48, is obtained by the longitudinal folding of the portion 51, to form a flap 51 'and the bonding of the extreme edge 53' of the latter on the portion 51, in this case near the side wall 43.
• the method according to the invention makes it possible to produce numerous bags, comprising one or more compartments, of which at least one contains, of manufacture, an extractable element such as a towel.
• other packaging bags are feasible, if only because of the characteristics of the machines used, such as for example the fact that they are shaped to close the hose below or above.
• some sachets are only feasible flat, without bellows, and / or with a certain type of background.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=37964719

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Family Cites Families (10)

• 2006
  • 2006-10-03 FR FR0654070A patent/FR2906526A1/fr not_active Withdrawn
• 2007
  • 2007-10-03 WO PCT/FR2007/052073 patent/WO2008040916A2/fr active Application Filing
  • 2007-10-03 EP EP07858505A patent/EP2076378A2/de not_active Withdrawn
  • 2007-10-03 US US12/443,818 patent/US20100027919A1/en not_active Abandoned
  • 2007-10-03 CA CA002665308A patent/CA2665308A1/fr not_active Abandoned

Non-Patent Citations (1)

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