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WO2007014366A2 - Sac repliable pour la distribution de liquides et procede - Google Patents

Sac repliable pour la distribution de liquides et procede Download PDF

Info

Publication number
WO2007014366A2
WO2007014366A2 PCT/US2006/029637 US2006029637W WO2007014366A2 WO 2007014366 A2 WO2007014366 A2 WO 2007014366A2 US 2006029637 W US2006029637 W US 2006029637W WO 2007014366 A2 WO2007014366 A2 WO 2007014366A2
Authority
WO
WIPO (PCT)
Prior art keywords
wall
collapsible bag
layer
walls
bag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2006/029637
Other languages
English (en)
Other versions
WO2007014366A3 (fr
Inventor
Kenneth Micnerski
David Sobol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scholle IPN Corp
Original Assignee
Scholle Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scholle Corp filed Critical Scholle Corp
Priority to CA002616961A priority Critical patent/CA2616961A1/fr
Priority to EP06800514.9A priority patent/EP1915298A4/fr
Priority to AU2006272535A priority patent/AU2006272535A1/en
Priority to BRPI0615961-3A priority patent/BRPI0615961A2/pt
Publication of WO2007014366A2 publication Critical patent/WO2007014366A2/fr
Publication of WO2007014366A3 publication Critical patent/WO2007014366A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall
    • 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
    • B65D2231/00—Means for facilitating the complete expelling of the contents
    • B65D2231/001—Means for facilitating the complete expelling of the contents the container being a bag
    • B65D2231/002—Means for facilitating the complete expelling of the contents the container being a bag comprising strips forming channels or liquid passageways

Definitions

  • the present invention relates to collapsible bags for dispensing liquid products, and more particularly to collapsible bags having a internal surfaces which provide
  • the walls of the bag are typically sheets of plastic, which are typically formed of polyethylene, polypropylene, nylon, or polyester.
  • the liquid contents can be juices, milk, drink syrups or other liquids such as
  • the boxes structurally support the bags during storage, shipment, and as they are being emptied.
  • the bags are emptied through a spout in the bag accessible through a hole in the box and
  • a plastic dip tube or dip strip disposed in the bag and secured therein so as to
  • the strip prevents the bag from collapsing on the opening and closing it, and also guides the remaining quantities of syrup in the bag to the opening as the syrup continues to be withdrawn.
  • the strip can be attached to the spout and/or to the inside wall of the plastic bag.
  • the dip tube or dip strip can be attached to the perimeter seal of the bag. Examples of dip tubes or dip strips and their collapsible bags are shown in U.S.
  • the application to the bag of a dip tube or dip strip requires yet another separate manufacturing step.
  • the dip tube or dip strip is disposed in the bag by attachment to the spout, the inside wall of the bag or to the perimeter seal of the bag, or a
  • passageways that are associated with the walls are often not suitable for the evacuation of more viscous liquids, such as syrups.
  • other such solutions are generally incapable of withstanding the forces associated with the suction evacuation process, such that the
  • the invention comprises a collapsible bag for dispensing liquids, including
  • the bag comprises a first wall and a second wall, a spout, a surface variation defining a minimum unstressed volume.
  • the first wall and the second wall together to define a fluid chamber therebetween.
  • the first wall and the second wall each have an inner surface facing the fluid chamber and an opposed outer surface.
  • the spout is attached to one of the first and second walls and has an opening therethrough having
  • the surface variation is molded into at least a portion of the first wall and at least a corresponding portion of the second wall.
  • the surface variation limits contact between the inner surfaces of the first wall and the second wall so as to define a minimum unstressed volume therebetween. At least a portion of the minimum unstressed volume is maintained
  • the minimum unstressed volume between the first and second walls is at least .18 cubic centimeters per square inch of surface area of each of the first wall and the second wall.
  • first wall and the second wall each comprise a plurality of layers, a first layer of which comprises a heat sealable polymer
  • the first layer comprises a linear low density polyethylene and the second layer comprises a high density polyethylene.
  • the second layer comprises one of the group selected from nylon, high density polyethylene, polypropylene and polyesters.
  • the thickness of each of the first and second walls is less than 10 mils. More preferably, the thickness of each of the first and second walls is less than 8 mils.
  • the first wall and the second wall each have a strength defined by a secant modulus of at least 30,000 psi. More preferably, the first wall and the second wall each have a strength defined by a secant modulus of at least 45,000 psi.
  • the surface variation defines a height of the inner surface of either of the first wall and the second wall that is between 1.3 and 2.5 times
  • the surface variation comprises a repeated pattern of nested alternating elongated ridges defining a plurality of peaks and valleys, wherein adjoining ridges are disposed obliquely relative to each other.
  • the adjoining ridges are disposed perpendicular to
  • the abutment of the peaks of the elongated ridges of the first wall with the peaks of the elongated ridges of the second wall define a volume of at least 0.36 cubic centimeters per square inch.
  • each of the elongated ridges has a
  • each of the elongated ridges has a length of between .0625 inches and .1825 inches.
  • the surface variation extends substantially along at least 85% of a surface area of each of the first and second walls.
  • the surface variation extends substantially along at least 85% of a surface area of each of the first and second walls.
  • first and second walls further comprise a
  • the collapsible bag further comprises an outer first wall and an outer second wall, the outer first wall being positioned on the first wall and the outer second wall positioned on the second wall generally joined at the seals, so as to define a
  • the collapsible bag further includes a spout, wherein
  • the spout further comprises an elongated opening and a base flange.
  • the base flange extends about the elongated opening.
  • the flange has a bottom surface wherein the bottom surface includes a plurality of surface channels positioned thereon.
  • the plurality of surface channels comprise
  • the plurality of surface channels comprise a combination of a plurality of concentric circular grooves and a plurality of radial
  • Figure 1 of the drawings comprises a perspective view of an embodiment of the collapsible bag for evacuating liquids of the present invention
  • Figure 2 of the drawings comprises a partial perspective view of the collapsible bag, showing, in particular, the unstressed minimum volume thereof;
  • Figure 3 of the drawings comprises a partial top elevational view of the first wall of the collapsible bag of the present invention, showing, in particular, the surface variation thereof;
  • Figure 4 of the drawings is a partial cross-section of the collapsible bag of the present invention, taken about lines 4-4 of Figure 2;
  • Figure 5 of the drawings comprises a perspective view of the spout of the collapsible bag of the present invention
  • Figure 6 of the drawings comprises a side elevational view of a portion of the collapsible bag of the present invention, showing, in particular, the spout thereof;
  • Figure 7 of the drawings comprises a cross-sectional view of the collapsible bag of the present invention, taken generally about lines 7-7 of Figure 10, showing, in
  • Figure 8 of the drawings comprises a cross-sectional view of another embodiment of the flexible container of the present invention, showing, in particular, a two ply configuration thereof;
  • Figure 9 of the drawings comprises a schematic representation of a testing procedure undertaken with an embodiment of the collapsible bag of the present invention and a comparative container;
  • Figure 10 of the drawings comprises a top plan view of the collapsible bag of the present invention, showing, in particular, the seals thereof; and
  • Figures l la and l ib of the drawings comprise an embodiment of the collapsible bag of the present invention, showing, in particular, the seals thereof.
  • the collapsible bag includes first wall 12, second wall 14, seals 15, surface variation 16 and spout 18.
  • the collapsible bag may be configured in any number of different sizes .
  • S eals 15 j oin first wall 12 and second wall 14 so as to define a fluid chamber 56.
  • first wall and the second wall may comprise two separate sheets of material joined by top seal 15a, bottom seal 15b,
  • One such container is commonly referred to as the pillow container.
  • Such containers may have alternative constructions, such as a three seal
  • pillow container shown in Figure 11a wherein a sheet of material is used to form the front wall and the back wall.
  • vertical seal 15e joins the two ends of the single sheet of material along second wall 14, thereby forming the front and back walls.
  • top seal 15a and bottom seal 15b, along with side folds complete the fluid chamber.
  • a single sheet of material is used to form the front wall and the back wall.
  • vertical seal 15e joins the two ends of the single sheet of material along second wall 14, thereby forming the front and back walls.
  • top seal 15a and bottom seal 15b, along with side folds complete the fluid chamber.
  • a single seal 15e joins the two ends of the single sheet of material along second wall 14, thereby forming the front and back walls.
  • top seal 15a and bottom seal 15b, along with side folds complete the fluid chamber.
  • a single seal 15e joins the two ends of the single sheet of material along second wall 14, thereby forming the front and back walls.
  • the fluid chamber may comprise any number of different sizes and shapes.
  • One common shape comprises a 2.5 gallon bag of a generally rectangular shape wherein the length of the bag is approximately 17" and the width of the bag is approximately 21".
  • Other common configurations comprise a 5 gallon bag having a
  • spout 18 is located proximate one
  • top seal and bottom seal between the opposing side edges of the bag.
  • other positions of the seal are likewise contemplated.
  • the invention is generally directed to the evacuation of liquids which are contained within the fluid chamber 56. Any number of liquids are contemplated for use in
  • One of the more difficult classes of liquids to be evacuated from a collapsible bag comprises liquids which are generally
  • first wall 12 is shown in outer surface 20, inner
  • Inner surface 22 contacts the fluid within the fluid chamber.
  • Thickness 24 is generally less than 10 mils and most preferably less than 8 mils. While greater thicknesses have been contemplated, one advantage of the present invention is that proper evacuation can be achieved with a relatively thin film.
  • the strength of the material is such that the secant modulus is between 30,000 psi and 80,000 psi, and most preferably in excess of 45,000 psi.
  • Opening 26 extends from inner surface 22 to outer surface 20.
  • the opening in the present invention is substantially circular and substantially uniform,
  • First wall 12 comprises a two layer film, and preferably a three layer film. It will be understood that such a film may be produced in any number of different
  • One such manufacturing process may comprise a lamination process.
  • Another such manufacturing process may comprise a lamination process.
  • process may comprise a co-extrusion process.
  • Other manufacturing processes are contemplated and considered within the scope of the invention.
  • a single layer film is contemplated for use.
  • FIG. 7 One embodiment of the three layer film is shown in Figure 7 as comprising
  • first layer 30, second layer 32 and third layer 34 The first layer is in contact with the liquid
  • First layer 30 comprises a material which facilitates sealing with the corresponding layer of the second wall.
  • first layer 30 comprises a linear low density polyethylene (LLDPE).
  • LLDPE linear low density polyethylene
  • Such a layer may have a thickness of approximately 3 mils and a density of 0.922 grams per cubic centimeter. Of course, materials having a greater or a lesser thickness are contemplated for use.
  • Second layer 32 comprises a material which is typically more rigid (i.e., stronger) than the first layer.
  • the second layer increases the ability of the overall first wall to
  • the second layer comprises an HDPE.
  • the thickness of the second layer is generally less than that
  • the thickness of the second layer is approximately 1.2 mils, and the material has a density of approximately
  • Third layer 34 comprises a material which typically exhibits improved characteristics relative to heat sealing and/or stress cracks relative to the second material.
  • third layer preferably comprises a LLDPE material.
  • the material has a thickness of approximately 1.5 mils in the present embodiment, and has a density of approximately 0.930
  • the third layer may be omitted, leaving only the first layer and the second layer.
  • additional layers may be employed, such as, for example, an oxygen barrier layer, an outer layer having advantageous mechanical properties (such as wear characteristics, abrasion characteristics, creasing characteristics,
  • a multi-ply collapsible bag is contemplated.
  • a multi-ply collapsible bag is contemplated.
  • Second wall 14 is shown in Figure 7 as comprising outer surface 40, inner
  • the second wall may comprises a film that is similar to that identified above with respect to the first wall. It will be understood that for a given embodiment, the properties of the first wall may be different than those of the second wall.
  • alternating nested elongated members such as elongated members 60.
  • the nested elongated members may be positioned on one or both of the inner surfaces of the first wall and the second wall.
  • the elongated members are positioned on both of the first wall and the second wall.
  • the elongated members are formed by pressing a pattern onto the film (preferably heating the film prior to formation thereof, and chilling after the
  • FIG. 4 A cross-sectional view of the surface variation is shown in Figure 4. As can be seen, the surface variation defines a height 62 differential between peaks and valleys on the inner surface of the first wall. The height exceeds the thickness 24 of the first wall. While
  • the height is between 1.3 and 2.5 times the thickness of
  • each elongated member is positioned at obliquely relative to any adjoining elongated member in such an embodiment.
  • Each of the alternating elongated members include length 64, width 66 and cross sectional configuration 68 ( Figure
  • the combined elongated members define a plurality of peaks and valleys in the respective first wall and second wall.
  • the spacing between adjoining alternating elongated members is
  • the length of the elongated members can be varied without departing from the scope of the present invention. It is contemplated that the length of the elongated members be approximately 0.0625 inches and 0.1875 inches and the width of the elongated members be approximately 30 to 70 mils. In the embodiment shown, the length of the elongated members is approximately 0.125 inches and the width is approximately 50 mils.
  • Such a surface variation as described provides a plurality of pathways in
  • the surface variations are such that they can cooperate with each other so that intimate contact between the inner surfaces of the first wall and second wall is precluded proximate the surface variation. Specifically, when the first wall and the
  • the minimum unstressed volume configured for the passage of fluid in the present invention comprises at least 0.18 cubic centimeters per
  • Such a configuration may include members having a substantially different
  • the material from which the first wall and the second wall is formed must be of adequate strength, surface configuration (i.e., depth, height, etc.) and/or thickness so that upon evacuation of the collapsible bag through suction
  • Spout 18 is shown in Figures 5 and 6 as comprising base flange 80 and wall member 82.
  • the spout is generally positioned between opposing side seals spaced apart the top seal.
  • the spout is generally closer to the top seal as compared to the bottom seal.
  • variations in the positioning of the spout are likewise contemplated.
  • Base flange 80 includes top surface 86 and bottom surface 88.
  • Top surface 80 includes sealing region 90.
  • the sealing region comprises the region wherein the film is sealed to the flange.
  • Bottom surface 88 includes channels positioned on spout 18.
  • the channels may comprise any number of different shapes and configurations, many of which are shown in the co-pending priority application to which the present application is a continuation-in-part.
  • the wall member 82 extends from the top surface of the base flange.
  • the wall member includes an internal surface 94 and an external surface 96.
  • the external surface may
  • the internal surface defines an elongated opening.
  • a number of different sizes, shapes and configurations are contemplated for use in the spout, and the invention is not limited to a substantially circular spout having a particular length.
  • the collapsible container is generally filled by filling equipment
  • the collapsible bag is generally boxed for shipment and dispensing.
  • the collapsible bag may be transported varying distances prior to
  • the withdrawing device generally operates through suction to remove the liquid within the fluid chamber.
  • the box having the collapsible bag may be positioned in any number of different containers.
  • the collapsible can be predominantly lying on the first wall or the second wall, wherein the spout may be in a downward or upward direction.
  • the container may be canted toward the spout.
  • the collapsible bag may be resting predominantly on its side edges wherein the spout may be elevated.
  • the collapsible bag may be positioned on the back seal such that the spout is positioned near
  • the flow from the bottom of the container is choked off from the spout because a portion of the container between the bottom region and the spout has substantially fully collapsed onto itself, thereby substantially precluding any flow of material.
  • the surface variations insure that in a unstressed position, a minimum volume is maintained between the first wall and the second wall.
  • the maintaining means at least a portion of the minimum volume is maintained
  • the embodiment of the container of the present application comprised a 2.5 gallon container having surface variations extending about the entirety of the first and second walls thereof.
  • the first wall and the second wall comprise a
  • the first layer is a LLDPE having a thickness of approximately 3 mils; the second layer comprises a HDPE having a thickness of approximately 1.2 mils; and the third layer comprises a LLDPE material having a thickness of approximately 1.5 mils, such that the film comprises a thickness of approximately 5.7 mils.
  • the surface variations have a height of approximately 12 mils and comprise an alternating set of nested elongated members. The length of the elongated members is approximately 0.125 inches, and the elongated members have a semi-circular cross-section.
  • a conventional spout was attached to the container (i.e., a spout having a substantially uniformly flat bottom surface of the base flange.
  • the formed container was filled a conventional post mix syrup having a specific gravity of approximately 1.25.
  • the weight of the container was measured and recorded.
  • the container was then placed in an evacuation test in a vertical orientation wherein the spout of the container is positioned
  • Such a container includes a plurality of pathways pressed into the inner surfaces of each of the first and second walls.
  • the pathways are in a waffle pattern so as to define a plurality of square protuberances.
  • the container of the present invention consistently removed a substantially greater amount of fluid from within the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

La présente invention a trait à un sac repliable pour la distribution de liquides, notamment des liquides visqueux tels que du sirop et analogues, comportant une première paroi, une seconde paroi, un bec verseur, une variation de surface associée aux première et seconde parois. La première paroi et la seconde paroi sont assemblées de façon à définir une enceinte à fluide entre elles. Le bec verseur est fixé à la première ou la seconde parois, et présente une ouverture traversante dont l'axe est sensiblement perpendiculaire à la première ou seconde parois. La variation de surface est moulée dans au moins une portion de la première paroi et au moins une partie correspondante de la seconde paroi. La variation de surface limite le contact entre les surfaces intérieures de la première paroi et de la seconde paroi de manière à définir entre elles au moins une partie du volume minimal sans contrainte dont au moins une partie est maintenue sensiblement pendant toute la durée d'évacuation du liquide de celui-ci par aspiration.
PCT/US2006/029637 2005-07-27 2006-07-27 Sac repliable pour la distribution de liquides et procede Ceased WO2007014366A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002616961A CA2616961A1 (fr) 2005-07-27 2006-07-27 Sac repliable pour la distribution de liquides et procede
EP06800514.9A EP1915298A4 (fr) 2005-07-27 2006-07-27 Sac repliable pour la distribution de liquides et procede
AU2006272535A AU2006272535A1 (en) 2005-07-27 2006-07-27 Collapsible bag for dispensing liquids and method
BRPI0615961-3A BRPI0615961A2 (pt) 2005-07-27 2006-07-27 bolsa dobradiça

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/192,236 US20070025648A1 (en) 2005-07-27 2005-07-27 Collapsible bag for dispensing liquids and method
US11/192,236 2005-07-27

Publications (2)

Publication Number Publication Date
WO2007014366A2 true WO2007014366A2 (fr) 2007-02-01
WO2007014366A3 WO2007014366A3 (fr) 2007-05-18

Family

ID=37684020

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/029637 Ceased WO2007014366A2 (fr) 2005-07-27 2006-07-27 Sac repliable pour la distribution de liquides et procede

Country Status (7)

Country Link
US (1) US20070025648A1 (fr)
EP (1) EP1915298A4 (fr)
CN (1) CN101389541A (fr)
AU (1) AU2006272535A1 (fr)
BR (1) BRPI0615961A2 (fr)
CA (1) CA2616961A1 (fr)
WO (1) WO2007014366A2 (fr)

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CN106347831A (zh) * 2015-07-20 2017-01-25 宜兴威尼特包装袋有限公司 液体集装袋密封型便捷灌装结构
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US10687642B2 (en) 2016-02-05 2020-06-23 Havi Global Solutions, Llc Microstructured packaging surfaces for enhanced grip
RU2747970C1 (ru) * 2016-04-07 2021-05-18 Хави Глобал Солюшенз, Ллк Пакет для текучей среды, имеющий внутреннюю микроструктуру
WO2020080507A1 (fr) * 2018-10-19 2020-04-23 凸版印刷株式会社 Contenant tubulaire et son procédé de fabrication
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CA2616961A1 (fr) 2007-02-01
AU2006272535A1 (en) 2007-02-01
WO2007014366A3 (fr) 2007-05-18
US20070025648A1 (en) 2007-02-01
CN101389541A (zh) 2009-03-18
BRPI0615961A2 (pt) 2011-05-31
EP1915298A4 (fr) 2013-05-01
EP1915298A2 (fr) 2008-04-30

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