US20050031232A1 - Package such as a bag with oriented tear opening - Google Patents

Package such as a bag with oriented tear opening Download PDF

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Publication number
US20050031232A1
US20050031232A1 US10/495,436 US49543604A US2005031232A1 US 20050031232 A1 US20050031232 A1 US 20050031232A1 US 49543604 A US49543604 A US 49543604A US 2005031232 A1 US2005031232 A1 US 2005031232A1
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United States
Prior art keywords
stiffening element
typically
forming
strip material
tear
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Abandoned
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US10/495,436
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English (en)
Inventor
Jean-Claude Jammet
Stephane Mathieu
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Soplaril SA
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Soplaril SA
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Publication date
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Assigned to SOPLARIL reassignment SOPLARIL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JAMMET, JEAN-CLAUDE, MATHIEU, STEPHANE
Publication of US20050031232A1 publication Critical patent/US20050031232A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • 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
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • 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
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/20—Cutting sheets or blanks
    • 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
    • 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
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers

Definitions

  • the invention relates to the domain of flexible packagings, typically bags. These bags are formed from single or multilayer strip materials, partly or entirely composed of plastic films.
  • opening includes tearing of the strip material forming the bag, the strip material forming the bag being chosen from among hand tearable materials.
  • these, bags have an opening zone typically near the top including a tear starting point or notch, typically in a “V” shape, so as to concentrate the tearing energy at a local point and thus start tearing the material from which the bag is made with a minimum manual force.
  • Opening of the bag requires experience in the use of a tear starting point, and such bags are usually difficult if not impossible to open by applying a manual force anywhere else than at the tear starting point, which guarantees the integrity of the bag throughout its life.
  • Tircell In the case of easily tearable materials, an opening method commonly called “Tircell” ®, typically composed of a striplet with mechanical properties stronger than the properties of the material to be torn, is fixed to the material to be torn, and comprising a free end at which the striplet can be pulled manually so that the said material can be torn.
  • the tear can propagate in a given direction on one of the faces or walls of the bag, while it might propagate in a completely different direction on the other face or facing panel.
  • pre-cut lines For formation of pre-cut lines, it is known firstly that they require expensive equipment, and secondly that they are difficult to use in that high precision and a uniform cut depth are necessary, and the final result may be that the material is mechanically weakened over a considerable width which can make it more difficult to maintain integrity of the packaging throughout its life.
  • packaging of a product forms a container comprising two sidewalls, a bottom and a filling opening, that can be closed after the product has been packaged in the said packaging, the said container being formed from a hand tearable material typically made of a plastic strip, and comprising a first opening area containing a tear starting point typically formed on one edge of the said container in order to open the said packaging for the first time after it has been filled and sealed, the said edge typically being formed by sealing the edges of the two sidewalls.
  • This packaging is characterised in that, in the said first opening area:
  • first stiffening element can form a sort of barrier delimiting two zones (the so-called upper part and the so-called lower part) such that a tear initiated in one zone will not propagate to the other zone, while choosing higher mechanical characteristics for the stiffening element than for the material forming the packaging, particularly its resistance to tearing.
  • the tear since the tear is typically initiated in the upper part rather than in the lower part forming the part of the packaging containing the packaged product, this means guarantees integrity of the lower part, thus eliminating the risk of the product been spilled when the bag is opened.
  • the applicant has observed that problems that arise when the bag is opened can be restricted by also using a guide means in order to “direct” the tear—the tear being formed starting from a tear starting point close to the said first stiffening element in the upper part or at the limit between the upper and lower parts—without it being necessary to assign a precisely predetermined or determined trajectory to the tear, the purpose being that the final consumer can open the bag in a single gesture and without the need for any accessory whatsoever, so as to obtain the simply required result.
  • the combination of means a) to c) may be applicable to all types of bags including sterilisable bags, the extra cost for its application being negligible or very low depending on the precise nature of the chosen stiffening element and the guide means.
  • FIGS. 1 a to 15 c relate to the invention.
  • FIGS. 1 a , 1 c , 1 d , 2 a , 2 c , 3 a , 4 a , 6 , 9 , 10 and 12 a are diagrammatic views of rectangular bags ( 1 ) with a side view of a wall ( 2 )—to illustrate the relative position of the said stiffening element ( 5 ), the said tear starting point ( 4 ), and the presence of the said guide means ( 6 ).
  • FIGS. 1 a , 1 d , 2 a , 3 a , 4 a and 5 relate to bags ( 1 ) with an unsealed filling opening ( 13 ) and therefore ready to be filled, while FIGS. 1 c , 2 c , 5 and 6 relate to bags that are closed after filling, with the filling edge being sealed ( 14 ).
  • FIGS. 1 b , 2 b , 3 b , 3 c and 4 b show sections through sidewalls ( 2 , 2 ′) of bags ( 1 ) at the said first stiffening element ( 5 ) and possibly at the said guide means ( 6 ).
  • FIG. 1 a represents the bag ( 1 ) before being filled.
  • FIG. 1 b is a section along A-A in FIG. 1 a.
  • FIG. 1 c shows the bag ( 1 ) after it has been filled and closed.
  • FIG. 1 d corresponding to FIG. 1 a , shows the bag ( 1 ) in which the filling opening ( 13 ) is perpendicular to the side ( 15 ) of the first opening of the bag.
  • FIGS. 2 a to 2 c relate to another embodiment of the invention in which the stiffening element ( 5 ) is a ( 50 ) and in which the said guide means ( 6 ) is composed of a thread forming the said second stiffening element ( 61 ).
  • FIG. 2 a shows the bag ( 1 ) before being filled.
  • FIG. 2 b is a section along A-A in FIG. 1 a.
  • FIG. 2 c shows the bag ( 1 ) after it has been filled and closed.
  • FIGS. 3 a to 3 c relate to other embodiments of the invention.
  • FIG. 3 a shows a bag ( 1 ) in which the filling opening ( 13 ) covers the entire section of the bag, while the said top part ( 11 ) corresponding to the part of the bag torn the first time that it is opened is only in the right corner of the bag.
  • the stiffening element ( 5 ) and the said second stiffening element ( 61 ) are formed by local deposits ( 53 ).
  • the stiffening element ( 5 ) and the said second stiffening element ( 61 ) are formed by overthicknesses ( 54 ) of the material forming the walls ( 2 , 2 ′).
  • FIG. 4 a is similar to FIG. 3 a , but the stiffening element ( 5 ) and the said second stiffening element ( 61 ) are formed by a single striplet ( 52 ) fixed to the surface of each wall ( 2 , 2 ′) in which a central line of weakness ( 520 ) is formed.
  • FIG. 4 b is a section along A-A in FIG. 4 a.
  • FIG. 5 shows a bag ( 1 ) in which the stiffening element ( 5 ) is formed by a thread ( 50 ) and in which the said second stiffening element ( 61 ) is formed by the sealing edge ( 14 ) typically reinforced ( 62 ) by pleating.
  • FIGS. 7 a to 8 diagrammatically illustrate two embodiments for manufacturing the strip material ( 7 ) in the form of a reel ( 72 ) designed to form the bags ( 1 ) with the insertion of the stiffening element ( 5 ) and the guide means ( 6 ) composed of a thread ( 50 ).
  • the strip ( 7 ) is formed by extrusion or assembly of two layers ( 70 ).
  • FIG. 7 a shows a perspective view of the strip material ( 7 ), the threads ( 50 ) being parallel to the machine direction MD of the material.
  • the dashed lines ( 71 ) diagrammatically show the cutting out shape of the walls ( 2 , 2 ′) in order to form the bags ( 1 ).
  • FIG. 7 b shows a cross-sectional view before the two layers ( 70 ) are brought together with the threads ( 50 ) placed between them to form a strip material ( 7 ), as shown diagrammatically in the sectional view in FIG. 7 c.
  • FIG. 8 is similar to FIG. 7 a , but the thread is no longer straight due to a transverse displacement of the thread ( 50 ) on the input side, synchronized with a longitudinal displacement along the MD direction.
  • FIG. 9 corresponds to FIG. 1 c , but the bag ( 1 ) is formed by folding along a folding line ( 16 ) corresponding to the bottom ( 17 ) of the bag.
  • FIG. 10 corresponds to FIG. 1 c , but the stiffening element ( 5 ) is composed of a label ( 51 ) that may be printed and/or metallic.
  • FIG. 11 shows a perspective view of the bag ( 1 ) in FIG. 10 after opening and separation of the top part ( 11 ), and manual pressure on the edges ( 19 ), so as to elastically separate the two labels ( 51 ) and thus open up the orifice of the first opening ( 15 ).
  • FIG. 12 a shows a bag ( 1 ) in which the said stiffening element ( 1 ) and the said second stiffening element ( 61 ) are formed by a label ( 55 ) that could be printed and/or metallic, comprising a line of weakness ( 550 ) forming the said partition line, and provided with tear starting points ( 4 ) at its ends.
  • FIG. 12 b shows a vertical cross-section through the bag according to FIG. 12 a , after opening and separating the top part ( 11 ), and after closing again by using a foldable label ( 55 ), typically metallic and printed, for example made of aluminium or including aluminium.
  • FIG. 12 relates to manufacturing of the PET/Al/PP strip material ( 7 ), with 6/6 PA threads being inserted between the PET/AJ and PP layers.
  • FIG. 13 corresponds to FIG. 12 , but relates to manufacturing of the PET//Al/OPP/PP material, with a nylon thread being inserted between the PET and Al/OPP/PP layers.
  • FIG. 14 is similar to FIG. 13 , but the thread is coated with glue ( 73 ) before being inserted between the PET and Al/OPP/PP layers.
  • FIGS. 15 a to 15 c illustrate manufacturing of a strip material ( 7 ) in which the stiffening element ( 5 ) is a thread ( 50 ) arranged in the transverse direction TD, perpendicular to the machine direction MD.
  • FIG. 15 a shows a diagrammatic view of a longitudinal section perpendicular to the strip material ( 7 ) to be made, showing a device for gluing two films ( 70 ) using an adhesive ( 73 ), a thread ( 50 ) being deposited over the entire width of the strip at regular intervals so as to obtain a material according to FIG. 15 b (top view), and then a material according to FIG. 15 c corresponding to FIG. 15 b after the parts of the thread external to the material have been eliminated.
  • FIG. 16 shows a section through two sidewalls ( 2 ) and ( 2 ′) facing each other before welding to form a bag, two upper striplets ( 51 ) forming the said guide means ( 6 , 61 ), and two lower striplets forming the said stiffening element ( 5 ).
  • the said guide means ( 6 ) may be formed by:
  • FIGS. 1 a to 1 d , 6 , 9 , 10 and 12 a This embodiment has been illustrated in FIGS. 1 a to 1 d , 6 , 9 , 10 and 12 a.
  • the said guide means ( 6 ) may include a second stiffening element ( 61 ) on each sidewall ( 2 , 2 ′) and typically in parallel, forming a secondary barrier to the tear, typically parallel to the said first stiffening element forming the said main barrier, the said tear starting point being located between the said main and secondary barriers so as to maintain the said tear between the said first stiffening element and the said second stiffening element during the said first opening.
  • the said first and second stiffening elements forming the said main and secondary barriers are preferably identical, continuous, parallel and separated by a distance typically varying from 1 to 20 mm, and preferably from 2 to 10 mm; they may possibly form a thread ( 50 ), a striplet ( 52 ) or a label ( 55 ) fixed to the said face and having a line of weakness ( 520 , 550 ) typically obtained by making a preliminary mechanical cut or a laser cut, the said striplet or label on one face ( 2 ) facing the said striplet on the other face ( 2 ′).
  • the said partition line which generally runs along or is coincident with the line formed by the first stiffening element ( 5 ), may be a line forming a complete separation between the said upper part ( 11 ) and lower part ( 12 ). This arrangement is usually more practical or aesthetic, but it is absolutely not compulsory.
  • this partition line is a transverse line, so as to ensure that the said bag can be fully opened, as illustrated for example on FIGS. 1 a to 2 c . But partial opening would also be possible as illustrated in FIGS. 3 a to 4 b.
  • the nature, mechanical characteristics or thickness of the said first stiffening element ( 5 , 50 , 51 , 52 , 53 , 54 , 55 ) forming the said barrier should be chosen such that the propagation energy of the said tear is typically at least 20% higher at the crossing of the said main barrier ( 5 ′) than in the strip material ( 7 ) without the stiffening element.
  • the propagation energy of the tear at the crossing of the said main barrier ( 5 ′) including the said first stiffening element ( 5 ) or the secondary barrier comprising the said second stiffening element ( 61 ), may be much higher, at least twice as high, or even five times as high or even more in some cases, than the propagation energy of the tear in the strip material itself, such that it becomes almost impossible for the tear to deviate from the “track” assigned to it in the design of the said packaging, the first time that it is opened.
  • FIG. 3 c illustrate the case in which the said first stiffening element is composed of an add on element, typically a thread ( 50 ) or a striplet ( 51 ) fixed to the said sidewalls ( 2 , 2 ′).
  • an add on element typically a thread ( 50 ) or a striplet ( 51 ) fixed to the said sidewalls ( 2 , 2 ′).
  • the said thread ( 50 ) may be a textile thread made of a natural, artificial or synthetic material, or a metallic wire, the said thread or wire having a fracture strength equal to at least 0.5 N.
  • the said striplet ( 51 ) may be a paper or metal striplet, or a single layer or multilayer plastic striplet, possibly printed.
  • the said first stiffening element ( 5 ) forming the said barrier may be composed of a pattern in relief ( 53 ) typically obtained by local deposition of material, for example by printing, so as to form a relief with a thickness typically between 20 and 200 ⁇ m, and thus locally increase the thickness of the said strip material by at least 20%. It may thus be advantageous to form the said first stiffening element ( 5 ) and the said second stiffening element ( 61 ) at the same time as the strip material ( 7 ) that will form the container ( 1 ) is printed.
  • the said first stiffening element may be composed of an overthickness ( 54 ) of the material forming the said face ( 2 , 2 ′) typically formed by punching or extrusion of the said typically plastic material.
  • the said strip material ( 7 ) may be a multilayer material, the said first stiffening element ( 5 , 50 , 51 ) being inserted between two layers ( 70 ) of the said multilayer material, the two layers possibly being different or identical.
  • the said strip material ( 7 ) may comprise at least one extruded thermoplastic layer ( 70 ) or at least two coextruded thermoplastic layers ( 70 ), or at least two layers ( 70 ) made of a complexed strip material, the said stiffening element typically being oriented in the “machine” direction MD of the strip material ( 70 ) as illustrated in FIGS. 7 a to 8 and 12 to 14 in which the stiffening element is a thread, but possibly in the “transverse” direction TD, as illustrated in FIG. 15 c .
  • the packaging according to the invention may typically be formed either from two strip materials ( 7 ) that may be identical or different, by cutting the two materials into strips, each forming a sidewall ( 2 , 2 ′) of the said packaging, and sealing of the edges to form a sealed edge ( 3 ), or from a single strip material by folding, sealing and cutting, one side of the said packaging forming a fold ( 15 ).
  • the said sealing may typically be heat sealing consisting of compression of the edges, particularly such that each end of the said stiffening element ( 5 , 50 , 51 ) is coated by the said strip material ( 7 ) by local creep of the said strip material, so as not to damage the leak tightness of the packaging.
  • the said strip material ( 7 ) may be chosen from among, or may include, one or several of the following materials: paper, metallic sheet typically made of aluminium, film or a layer of PET, PA, PP, PE in one or two directions, possibly metallised, the said material being between 20 and 200 ⁇ m thick, the said strip material being a material with 1 to 5 layers ( 70 ).
  • a tearable PE preferably at least 60 ⁇ m thick will be used.
  • the packaging may comprise an add-on bottom ( 18 ), so that a package can be obtained with an upright station.
  • the said first stiffening element ( 5 ) may have characteristics chosen based on foldability/unfoldability so that the said packaging can be closed again after the said opening for the first time. This can be achieved using a metallic striplet, typically made of aluminium, that can also be printed.
  • One particular purpose of the invention is a bag, typically with rectangular sides ( 2 , 2 ′) made of a multilayer material, typically including 2 to 4 layers, the said first stiffening element of each face ( 2 , 2 ′) facing the other and being composed of a textile thread, typically made of PET or PA, parallel to the said opening ( 13 ) and typically at a distance from this edge equal to between 5 mm and 30 mm such that the said upper part ( 11 ) has a relatively small surface area compared with the said lower part, typically less than 0.2 times the surface area of the said lower part.
  • this type of bag may have its filling opening ( 13 ) in the said upper part, as illustrated on most of the bags shown in the figures or in the said lower part ( 12 ) as illustrated in FIG. 5 , or on the side as illustrated in FIG. 1 d in which the filling opening is perpendicular to the partition line formed by the said main barrier.
  • the said first stiffening element ( 5 ) may also be located on the inner and/or outer face of the said wall ( 2 , 2 ′).
  • the invention can also be used to obtain all sorts of combinations depending on which of the two faces is considered, the first stiffening element ( 5 ) or the second stiffening element ( 61 ). If necessary, it is also possible to accumulate several embodiments for the first stiffening element ( 5 ) and for the guide means ( 6 ) as a function of technical, aesthetic, production and usage requirements.
  • the first stiffening element ( 5 ), and possibly the said guide means, may be composed of or may include a striplet ( 51 , 52 ), for example in the form of a typically extruded profile like that illustrated in FIGS. 10, 11 , 16 .
  • the said striplet ( 51 , 52 ) may also include a closing means, the striplet on one face typically comprising a closing element cooperating with a complementary closing element facing it on the other side, the said closing means typically being of the “ZIP” type located below the said first stiffening element in the said lower part ( 12 ).
  • the packaging according to the invention may include a closing means, one face ( 2 ) typically including a closing element cooperating with a complementary closing element facing it on the other side ( 2 ′), the said closing means typically being of the “ZIP” type located below the said first stiffening element in the said lower part ( 12 ).
  • Another purpose of the invention consists of a process for manufacturing a package according to the invention in which:
  • the said first stiffening element ( 5 ) and possibly the said second stiffening element ( 61 ) may be coated typically with glue or adhesive such that they are absolutely fixed to the said strip material ( 7 ) and that there is no risk of delamination and no risk of the package losing its seal or the permeability of the package being increased.
  • first stiffening element ( 5 ) and the second stiffening element ( 61 ) are compatible with the materials forming the said strip material ( 7 ), but if an appropriate choice of the glue or adhesive is made, it is virtually possible to make any type of first stiffening element ( 5 ) and second stiffening element ( 61 ) bond to the said strip material ( 7 ).
  • the thickness ER of the said first stiffening element ( 5 ) and/or second stiffening element ( 61 ) will be chosen to be typically thin compared with the thickness of the strip material ( 7 ) E B —for example four times thinner or even 8 times thinner (10 ⁇ M vs 80 ⁇ m).
  • its thickness may be approximately equal to the thickness of the strip material, if necessary.
  • the said first stiffening element ( 5 ) and the said second stiffening element ( 61 ) may advantageously be identical and be formed simultaneously, in which case the strip material ( 7 ) may or may not be oriented.
  • the said strip material ( 7 ) may be chosen from among the following multilayer materials: PET/PP, PET/Al/PP, PET/Al/OPA/PP, PET/Al/PE, PET/Al/OPA/PE, PET/OPA/Al/PP, PET/OPA/Al/PE, PET/PE, OPP/PE, OPP/PP, OPP/OPP, OPA/PP, OPA/PE, where “Al” (also denoted “alu” or “ALU” in the figures) denotes a thin aluminium sheet, typically thinner than 20 ⁇ m, in which OPP and OPA denote oriented PP and oriented PA respectively, and “/” symbolically denotes separation between distinct layers.
  • the said strip material can also be supplied, and after the said container has been formed, the said product ( 8 ) can be packaged in the said container and the said package can be closed, typically before forming the said thinner tear starting point ( 4 ) and cutting out the said container, so as to use the so-called FFS (Form-Fill-Seal) process.
  • FFS Form-Fill-Seal
  • the said supplied strip material may include the said first stiffening element ( 5 ) oriented along the transverse direction TD, perpendicular to the machine direction MD of unwinding of the said strip material.
  • FIGS. 15 a to 15 c illustrate one industrial means of making a strip material comprising a thread oriented in the transverse direction, rather than in the machine direction as shown in FIG. 7 a .
  • the possibility of having a second thread forming the second stiffening element ( 61 ) is shown in dashed lines in FIGS. 15 b and 15 c.
  • the said supplied strip material does not include the said first stiffening element ( 5 ), the said first stiffening element ( 5 ) and the said guide means ( 6 ) may be formed or applied onto the faces ( 2 ) and ( 2 ′) if necessary when using the said FFS process.
  • FIG. 16 illustrates this possible type of bag, in which the two sidewalls ( 2 ) and ( 2 ′) are represented before welding face to face, the two upper striplets ( 51 ) forming the said guide means ( 6 , 61 ), the two lower striplets forming the said stiffening element ( 5 ). All these striplets can be fixed to the sidewalls either during manufacture of the said strip material, or during manufacture of the said container.
  • Another purpose of the invention consists of the strip material or the film ( 7 ) that will implement the process according to the invention.
  • This material or film that will be used on automatic FFS type filling machines includes the said first stiffening element ( 5 ) and possibly the said guide means, the said first stiffening element ( 5 ) and possibly the said guide means being oriented in the machine direction MD or in the transverse direction TD.
  • this film can be obtained using different technologies including complexing.
  • the stiffening element ( 5 ) and the guide means are typically introduced during lamination, preferably between the two films forming the layers ( 70 ). According to one method, their positioning within the width of the strip material is adjustable, and the function will be obtained in the longitudinal direction or the machine direction MD. Obviously, as many stiffening elements or guide means as are necessary can be introduced over the width of the strip material ( 7 ) in order to:
  • FIG. 7 a The principle diagram in FIG. 7 a only shows two threads ( 50 ) in the strip material ( 7 ), for the purposes of illustration.
  • the invention is used for applications in packaging of all types of products, for example for food products, cosmetics and household cleaning products.
  • the strip materials ( 7 ) used in the manufacturing tests are 12 ⁇ m/9 ⁇ m/90 ⁇ m thick PET/Al/PP, PET/Al/OPA/PP as shown in FIGS. 12 to 14 , and 80 ⁇ m thick PET/PE and PEBD.
  • the first stiffening element ( 50 ) and the second stiffening element ( 61 ) consist of a 13 strand PA6/6 nylon thread, the diameter of each strand being 10 ⁇ m.
  • Tests were carried out using a metal wire or an “anti-theft” striplet designed to provide an alert, typically by triggering a siren, in the case of a fraudulent crossing between the gateways associated with cash tills in shops, as the first stiffening element ( 50 ).
  • Reclosable bags were also made using a 40 ⁇ m thick and 20 mm wide aluminium striplet as the first stiffening element ( 5 ) on each face, by incorporating a “ZIP” type closure.
  • the invention has very many advantages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Making Paper Articles (AREA)
US10/495,436 2001-11-28 2002-11-20 Package such as a bag with oriented tear opening Abandoned US20050031232A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0115383A FR2832698B1 (fr) 2001-11-28 2001-11-28 Emballage, typiquement un sachet, a ouverture par dechirure orientee
FR01/15383 2001-11-28
PCT/FR2002/003966 WO2003045816A2 (fr) 2001-11-28 2002-11-20 Emballage a ouverture par dechirure orientee

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US (1) US20050031232A1 (fr)
EP (1) EP1458627B1 (fr)
AT (1) ATE359972T1 (fr)
AU (1) AU2002364791A1 (fr)
DE (1) DE60219688T2 (fr)
ES (1) ES2286329T3 (fr)
FR (1) FR2832698B1 (fr)
WO (1) WO2003045816A2 (fr)

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US20060126975A1 (en) * 2004-12-10 2006-06-15 Mckellar Randy R Easy opening rear seam bags and packaging methods
US20070157424A1 (en) * 2003-12-31 2007-07-12 Soheyl Mottahedeh Bag carrying device for a vacuum/blower
US20080037912A1 (en) * 2006-08-08 2008-02-14 Martuch Thomas J Flexible container for pourable product
US20080063324A1 (en) * 2006-09-12 2008-03-13 Bernard Stuart N Pouch opening feature
US20090074333A1 (en) * 2007-09-18 2009-03-19 Martin Griebel Packaging Bag with Tearing Aid
WO2010019074A1 (fr) * 2008-08-14 2010-02-18 Ankudinov Vladimir Aleksandrov Emballage pour produits pâteux
US20100089008A1 (en) * 2006-03-14 2010-04-15 Massimiliano Parini Thermoforming Plant For The Blow Moulding And Heat-Welding Of Containers
US20110177268A1 (en) * 2010-01-15 2011-07-21 Sleever International Company Film of plastics material stretched to present a privileged shrinkage orientation, a heat-shrink sleeve made out of the film, and an article covered in such a sleeve
US20120308166A1 (en) * 2011-06-06 2012-12-06 Vonco Products, Inc. Easy open flexible container
US20130094790A1 (en) * 2011-10-12 2013-04-18 Cryovac, Inc. Easy-Open Heat-Shrinkable Packaging Article and Package Made Therefrom
US20140061235A1 (en) * 2008-08-14 2014-03-06 Vladimir Ankudinov Package for paste-like products
US20150259103A1 (en) * 2014-03-14 2015-09-17 Chih-Hung Chen Plastic bags
US20160059998A1 (en) * 2011-02-03 2016-03-03 Vladimir Ankudinov Package for paste-like products
US20180118440A1 (en) * 2015-04-16 2018-05-03 Toyo Seikan Co., Ltd. Packaging bag
US10071833B2 (en) 2013-01-18 2018-09-11 Bemis Company, Inc. Tear-open pouch for fragile thin materials
USD896634S1 (en) 2019-01-29 2020-09-22 Golden State Foods Corp. Container
USD896633S1 (en) 2019-01-29 2020-09-22 Golden State Foods Corp. Container

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DE10225631B4 (de) * 2002-06-07 2004-09-09 Team-D Import-Export Warenvertriebs Gmbh Schutz- und Transporteinrichtung für Bekleidungsstücke
GB0217946D0 (en) * 2002-08-02 2002-09-11 Supreme Plastics Holdings Ltd Improvements in reclosable bags and like containers
EP1508530A1 (fr) * 2003-08-18 2005-02-23 Nestec S.A. Emballage souple et procédé de fabrication
DE102005002848A1 (de) 2005-01-20 2006-07-27 Focke & Co.(Gmbh & Co. Kg) Beutelpackung sowie Verfahren und Vorrichtung zum Herstellen derselben
DE212009000003U1 (de) 2008-02-22 2009-11-26 Beanstalk Aps Leicht zu öffnende Verpackung
CN102089213B (zh) * 2008-02-22 2013-07-31 宾斯托尔克有限公司 易于打开的包装件
GB201421703D0 (en) * 2014-12-05 2015-01-21 British American Tobacco Co Wrapper for tobacco industry products
WO2019099845A1 (fr) 2017-11-17 2019-05-23 Hollister Incorporated Réceptacles dotés de caractéristiques de régulation de déchirure

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US3827472A (en) * 1969-12-05 1974-08-06 Seisan Nipponsha Kk Reclosable bag
US3780781A (en) * 1971-09-07 1973-12-25 Seisan Nipponsha Kk Openable bag
US4301925A (en) * 1979-12-28 1981-11-24 Bemis Company, Inc. Bag with opening and reclosing feature
US4598826A (en) * 1984-11-09 1986-07-08 Minnesota Mining And Manufacturing Company Heat-sealable, laminated package
US5470419A (en) * 1990-07-30 1995-11-28 Ajinomoto Co., Inc. Easily tearable film and pouch made therefrom
US5186543A (en) * 1991-03-04 1993-02-16 Illinois Tool Works Inc. Tear-open bag having guide strips
US5547284A (en) * 1992-06-04 1996-08-20 Imer; Rodney H. Bag for liquids, pastes, or granulates and method of manufacturing
US6217216B1 (en) * 1996-02-22 2001-04-17 Nossi Taheri Reclosable plastic bag with non-perforated tear zone
US6360513B1 (en) * 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070157424A1 (en) * 2003-12-31 2007-07-12 Soheyl Mottahedeh Bag carrying device for a vacuum/blower
US20070237434A1 (en) * 2004-12-10 2007-10-11 Mckellar Randy R Easy opening rear seam bags and packaging methods
US20060126975A1 (en) * 2004-12-10 2006-06-15 Mckellar Randy R Easy opening rear seam bags and packaging methods
US20100089008A1 (en) * 2006-03-14 2010-04-15 Massimiliano Parini Thermoforming Plant For The Blow Moulding And Heat-Welding Of Containers
US7967510B2 (en) 2006-08-08 2011-06-28 Kellogg Company Flexible container for pourable product
US20080037913A1 (en) * 2006-08-08 2008-02-14 Martuch Thomas J Flexible container for pourable product
US20080037912A1 (en) * 2006-08-08 2008-02-14 Martuch Thomas J Flexible container for pourable product
US8408793B2 (en) 2006-08-08 2013-04-02 Kellogg Company Flexible container for pourable product
US20080063324A1 (en) * 2006-09-12 2008-03-13 Bernard Stuart N Pouch opening feature
WO2008033919A2 (fr) * 2006-09-12 2008-03-20 General Mills, Inc. Caractéristique d'ouverture de poche
WO2008033919A3 (fr) * 2006-09-12 2008-12-11 Gen Mills Inc Caractéristique d'ouverture de poche
US20090074333A1 (en) * 2007-09-18 2009-03-19 Martin Griebel Packaging Bag with Tearing Aid
WO2010019074A1 (fr) * 2008-08-14 2010-02-18 Ankudinov Vladimir Aleksandrov Emballage pour produits pâteux
US20110132927A1 (en) * 2008-08-14 2011-06-09 Vladimir Aleksandrovich Ankudinov Package for paste-like products
US20140061235A1 (en) * 2008-08-14 2014-03-06 Vladimir Ankudinov Package for paste-like products
US20110177268A1 (en) * 2010-01-15 2011-07-21 Sleever International Company Film of plastics material stretched to present a privileged shrinkage orientation, a heat-shrink sleeve made out of the film, and an article covered in such a sleeve
US20160059998A1 (en) * 2011-02-03 2016-03-03 Vladimir Ankudinov Package for paste-like products
US20120308166A1 (en) * 2011-06-06 2012-12-06 Vonco Products, Inc. Easy open flexible container
US9302835B2 (en) * 2011-06-06 2016-04-05 Vonco Products, Inc. Easy open flexible container
US8794836B2 (en) * 2011-10-12 2014-08-05 Cryovac, Inc. Easy-open heat-shrinkable packaging article and package made therefrom
US20130094790A1 (en) * 2011-10-12 2013-04-18 Cryovac, Inc. Easy-Open Heat-Shrinkable Packaging Article and Package Made Therefrom
US10071833B2 (en) 2013-01-18 2018-09-11 Bemis Company, Inc. Tear-open pouch for fragile thin materials
US20150259103A1 (en) * 2014-03-14 2015-09-17 Chih-Hung Chen Plastic bags
US9623613B2 (en) * 2014-03-14 2017-04-18 Chih-Hung Chen Plastic bags
US20180118440A1 (en) * 2015-04-16 2018-05-03 Toyo Seikan Co., Ltd. Packaging bag
US10793334B2 (en) * 2015-04-16 2020-10-06 Toyo Seikan Co., Ltd. Packaging bag
USD896634S1 (en) 2019-01-29 2020-09-22 Golden State Foods Corp. Container
USD896633S1 (en) 2019-01-29 2020-09-22 Golden State Foods Corp. Container

Also Published As

Publication number Publication date
WO2003045816A8 (fr) 2004-06-03
DE60219688D1 (de) 2007-05-31
FR2832698B1 (fr) 2004-07-09
ES2286329T3 (es) 2007-12-01
ATE359972T1 (de) 2007-05-15
WO2003045816A3 (fr) 2004-01-22
EP1458627B1 (fr) 2007-04-18
DE60219688T2 (de) 2007-12-27
FR2832698A1 (fr) 2003-05-30
EP1458627A2 (fr) 2004-09-22
WO2003045816A2 (fr) 2003-06-05
AU2002364791A1 (en) 2003-06-10

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