EP2955126A2 - Belüfteter Beutel und Verfahren zur Herstellung davon - Google Patents

Belüfteter Beutel und Verfahren zur Herstellung davon Download PDF

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Publication number
EP2955126A2
EP2955126A2 EP14174615.6A EP14174615A EP2955126A2 EP 2955126 A2 EP2955126 A2 EP 2955126A2 EP 14174615 A EP14174615 A EP 14174615A EP 2955126 A2 EP2955126 A2 EP 2955126A2
Authority
EP
European Patent Office
Prior art keywords
bag
sheet
outer sheet
inner sheet
venting tube
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.)
Withdrawn
Application number
EP14174615.6A
Other languages
English (en)
French (fr)
Other versions
EP2955126A3 (de
Inventor
Yariv Sharmi
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.)
Plasto-Sac Ltd
Original Assignee
Plasto-Sac Ltd
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 Plasto-Sac Ltd filed Critical Plasto-Sac Ltd
Publication of EP2955126A2 publication Critical patent/EP2955126A2/de
Publication of EP2955126A3 publication Critical patent/EP2955126A3/de
Withdrawn legal-status Critical Current

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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags

Definitions

  • the present invention relates to packaging and, more particularly, but not exclusively to bags for packaging powders.
  • a simple venting valve is a tube formed along one side of the bag. For several reasons the tube should be formed in the upper side of the bag, when the bag is compressed to vent the trapped air, when the bag is shipped and stored. For other reasons the upper side of the bag should be arranged for quality printing. There is thus a need for addressing these contradicting needs as well as other issues associated with the prior art.
  • a bag comprising: an inner sheet and an outer sheet; wherein said inner sheet comprises a semi-permeable barrier part; wherein said inner sheet and outer sheet are connected by at least two seaming lines forming a venting tube between said inner sheet, outer sheet, and seaming lines; wherein said venting tube comprises an opening to free-air in at least one end of said venting tube; and wherein edges of at least one of said inner sheet and outer sheet are connected to form a bag; said bag-forming connection provided remotely from said venting tube.
  • venting tube is formed remotely from edges of at least one of said inner sheet and said outer sheet parallel to said venting tube.
  • venting tube is formed remotely from bag-forming connection, said bag-forming connection forming a bag by connecting said edges of said inner sheet and said edges of said outer sheet.
  • venting tube is formed with said bag-forming connection in opposing side of said bag.
  • the inner sheet and said outer sheet are made from different materials.
  • At least one of said different materials is a Polyethylene compound.
  • At least one of said different materials is a Polyethylene compound comprising Calcium Carbonate.
  • the inner sheet and said outer sheet have an overlapping area, and wherein said overlapping area is larger than said venting tube.
  • the outer sheet, at said overlapping area includes an area transparent to view, and wherein said area transparent to view is printed on the side facing said inner sheet.
  • the bag additionally comprises a printed area, wherein said printed area is protected by said inner sheet from materials internal to said inner sheet, and wherein said printed area is protected by said outer sheet from materials external to said outer sheet.
  • edges of said inner sheet are connected to form an inner bag, and wherein edges of said outer sheet are connected to form an outer bag.
  • a method for producing a bag comprising: providing an inner sheet comprising a semi-permeable barrier part; providing an outer sheet; connecting said inner sheet and said outer sheet along at least two seaming lines, forming a venting tube between said inner sheet, outer sheet, and seaming lines, wherein said venting tube comprises an opening to free-air in at least one end of said venting tube; connecting edges of at least one of said inner sheet and outer sheet to form a bag; and wherein said bag-forming connection are formed remotely from said venting tube.
  • the method additionally comprises forming said venting tube remotely from edges of said inner sheet and said outer sheet, said edges being parallel to said venting tube.
  • the method additionally comprises forming said inner sheet and said outer sheet from different materials.
  • the method additionally comprises providing an overlapping area between said inner sheet and said outer sheet; wherein said overlapping area is larger than said venting tube.
  • the method according additionally comprises: providing said outer sheet with an area transparent to view; and printing said area transparent to view on the side facing said inner sheet.
  • the method additionally comprises: connecting edges of said inner sheet to form an inner bag; and connecting edges of said outer sheet to form an outer bag.
  • bag-forming connections are at least one of: provided remotely from said venting tube; and connected separately of each other.
  • the present embodiments comprise a bag, particularly a bag for packaging powders, which can be vented in the packaging line, and a method for manufacturing such bags.
  • Vented bags according to embodiments of the present invention may be better understood with reference to the following drawings and accompanying description.
  • FIG. 1 is a simplified illustration of a cut through a vented bag 10, according to one embodiment of the present invention.
  • vented bag 10 includes a venting tube (or pipe) 11 made by and between an inner sheet 12 and an outer (external) sheet 13 joined together and with body 14 at seam lines 15.
  • Inner sheet 12 is at least partly formed as a semi-permeable barrier enabling the emission of gaseous matter (such as air) from vented bag 10 through venting tube 11, typically withholding the content of bag 10, typically a powder.
  • the vented bag 10, as well as any of its parts such as body 14, inner sheet 12, and outer sheet 13, can be made of any suitable material such as paper or plastic material such as polyethylene.
  • Inner sheet 12 and outer sheet 13 may be joined in seam lines 15 by any appropriate means of joining, such as adhesive matter, glue, stitching, soldering, heat seal, fusion, etc. Fusion can be implemented by heat, laser, ultrasound, electrofusion, etc.
  • Body 14 may be a sheet, typically extending from both sides of seam lines 15 and joined at joining line 16 at the back, or bottom, side of bag 10.
  • Fig. 1 shows a cut across the width of vented bag 10 laid down on a horizontal surface with the upper side including the venting tube 11 oriented horizontally. It is noted that it is advantageous to have venting tube 11 located in the top (upper) side of bag 10 to eliminated liquids on the floor from penetrating into bag 10 through venting tube 11.
  • Fig. 2 is a simplified top side view of vented bag 10, according to one embodiment of the present invention.
  • Fig. 2 shows body 14, outer sheet 13 and seam lines 15.
  • Fig. 2 shows the openings 17 of venting tube 11.
  • Fig. 2 shows the upper side of bag 10, which includes venting tube 11, openings 17 and a printed area 18. It is noted that it is advantageous to have printed area 18 located in the top (upper) side of bag 10, which is exposed for view. It is therefore appreciated that it is advantageous to have printed area 18 located over venting tube 11.
  • print area 18 is located substantially in the middle of the sheet of body 14, or, alternatively, print area 18 is located remotely from the edges of the sheet of body 14 or, alternatively, print area 18 is located remotely from the joining line 16 connecting the edges of body 14.
  • FIG. 3 is a simplified side view of vented bag 10 with outer sheet 13 removed, according to one embodiment of the present invention.
  • Fig. 3 shows body 14, inner sheet 12 and seam lines 15.
  • inner sheet 12 includes a semi-permeable barrier part 19 and optionally a non-permeable part 20.
  • inner sheet 12 includes the semi-permeable barrier part 19 in the middle of inner sheet 12, and two non-permeable parts 20 at both sides of inner sheet 12.
  • the semi-permeable barrier part 19 is made of a porous material such as a micro-perforated polyethylene sheet.
  • a perforated sheet or mesh may be adequate for the semi-permeable barrier part 19.
  • the semi-permeable barrier part 19 is made in a manner that enables gaseous matter such as air to escape from vented bag 10 when the bag is compressed, but does not enable the powder contained in the bag to escape.
  • the perforation holes are smaller than the size of the powder grains.
  • the entire inner sheet 12 is made of a micro-perforated polyethylene sheet and the non-permeable parts 20 are created by printing over these parts so as to close or seal the perforation holes.
  • FIG. 4 is a simplified cut through vented bag 10, according to one embodiment of the present invention.
  • Fig. 4 shows a cut across the width of vented bag 10 laid down on a horizontal surface with the upper side including the venting tube 11 oriented horizontally.
  • Fig. 4 shows body 14, outer sheet 13 and inner sheet 12 including semi-permeable part 19, and non-permeable parts 20 as well as pipe 11 between outer sheet 13 and inner sheet 12.
  • pipe 11 has an opening 21 to the environment (e.g. free air). Opening 21 is typically located at the end of pipe 11, and optionally at both ends.
  • FIG. 5 is a simplified side view of a part of vented bag 10, according to one embodiment of the present invention.
  • Fig. 5 shows the part of vented bag 10 encircled and designated in Fig. 4 by numeral 22.
  • Fig. 5 shows the edges of outer sheet 13 and inner sheet 12 and pipe 11 between outer sheet 13 and inner sheet 12.
  • the edge of inner sheet 12 shown in Fig. 5 includes a non-permeable part 20 and an edge of the semi-permeable part 19.
  • Fig. 5 also shows gaseous material (e.g. air) designated by numeral 23, escaping from the inner part of vented bag 10 (designated by numeral 24), through the semi-permeable part 19 of inner sheet 12 and along pipe 11 between outer sheet 13 and inner sheet 12, (including pipe 11 between outer sheet 13 and non-permeable part 20) to the environment (designated by numeral 25).
  • gaseous material e.g. air
  • FIG. 6A, Fig. 6B, Fig. 6C , Fig. 6D, and Fig. 6E are simplified illustrations of steps in the process of manufacturing a vented bag 10, according to a one embodiment of the present invention.
  • Fig. 6A shows body 14 as viewed from the external side, on which print area 18 is printed.
  • outer sheet 13 is a part of body 14 which also includes optional opening cuts 26.
  • print area 18 is located substantially in the middle of the sheet of body 14, or, alternatively, print area 18 is located remotely form the edges of the sheet of body 14.
  • Fig. 6B shows inner sheet 12, which includes semi-permeable barrier part 19 and non-permeable parts 20.
  • Non-permeable parts 20 are typically printed or painted or otherwise covered with a material that prevents the opening of pipe 11 between inner sheet 12 and outer sheet 13 from being closed when vented bag 10 sealed after it is filled.
  • Fig. 6C shows inner sheet 12, including semi-permeable barrier part 19 and non-permeable parts 20, fastened over the inner (not printed) side of body 14 by joining (e.g. by gluing or fusion) at seaming lines 27 (as described above).
  • Fig. 6D shows vented bag 10 as viewed from the bottom when laid horizontally with the printed side upwards.
  • Fig. 6D shows body 14 folded along folding lines 28 of Fig. 6C , and fastened along seaming lines 29 and 30.
  • Seaming line 29 closes together edges of body 14, designated in Fig. 6C by numerals 31.
  • Seaming line 30 closes the bottom of vented bag 10 (when standing vertically for filling). Seaming lines 29 and 30 from vented bag 10 with an opening side designated by numeral 32.
  • Fig. 6E shows vented bag 10 from the opposite side of Fig. 6D , showing the optional opening cuts 26 creating openings 17 of tube 11 and print area 18.
  • vented bag 10 of Figs. 6A-6E is advantageous in that tube 11 is located at about the middle of the sheet making body 14 ( Fig. 6C ) and thus, when body 14 is folded and stitched along seaming lines 29 and 30 to make vented bag 10 seaming line 29 is located at the opposite side of tube 11.
  • This arrangement enables quality printing over the part of body 14 where tube 11 is located.
  • This arrangement also enables placing vented bag 10 horizontally with tube 11 in the top side and seaming line 29 in the bottom side.
  • FIG. 7 is a simplified side view of an open vented bag 10, according to one embodiment of the present invention.
  • Fig. 7 shows vented bag 10 open at opening 33 (corresponding to opening side 32), before it is filled and the opening is closed.
  • Fig. 7 shows venting tube 11 between inner sheet 12 and outer sheet 13, semi-permeable barrier part 19 in inner sheet 12, and openings 34 of venting tube 11.
  • the openings 34 of the venting tube (or pipe) 11 are marked with a dotted line to designate that other than at openings 34 the outer sheet 13 and the body 14 are joined at their edges at these places.
  • Fig. 8 is a simplified view of a body part 35 including a semi-permeable barrier part 36
  • Fig. 9 is a simplified view of an outer sheet 37, according to one embodiment of the present invention.
  • Semi-permeable barrier part 36 is typically created by pressing a plurality of pins against the sheet making body part 35. Semi-permeable barrier part 36 is typically at about the middle of body part 35.
  • Outer sheet 37 is typically wider than the width of the venting tube (designated by lines 38). Outer sheet 37 is typically transparent and printed area 39 is typically printed on the inner side. Anti-adhesive parts 40 are also painted, or printed or otherwise applied to the inner side of outer sheet 37. It is appreciated that outer sheet 37 and body part 35 are joined together along seaming lines 38, along the edges 41 of outer sheet 37, and optionally between the edges 41 and seaming lines 38. It is appreciated that print area 39 is located between outer sheet 37 and body part 35. As seen in Fig. 8 , print area 39 is located substantially in the middle of the sheet of outer sheet 37 and/or body part 35, or, alternatively, print area 39 is located remotely from edges 41.
  • Fig. 10 is a simplified cut of outer sheet 37 connected with body part 35 creating venting tube 42 in between
  • Fig. 11 is a simplified cut of a vented bag 43 made of body part 35 and outer sheet 37, according to one embodiment of the present invention.
  • the edges 44 of body part 35 are connected at seaming line 45, at the opposite side of print area 39.
  • vented bag 43 is typically abrasive, and therefore the environment of vented bag 43 is also abrasive. It is therefore advantageous to protect print area 39 from both the inside and the outside of vented bag 43 by locating print area 39 between outer sheet 37 and body part 35. It is noted print area 39 can be viewed through the transparent outer sheet 37.
  • width of outer sheet 37 can be as wide as needed for print area 39 and as much as the width of body part 35.
  • Fig. 12 is a simplified view of an inner sheet 46 of a dual-vented bag 47 (shown in Fig. 15 ), and to Fig. 13 , which is a simplified view of an outer sheet 48 of dual-vented bag 47, according to one embodiment of the present invention.
  • inner sheet 46 includes a semi-permeable barrier part 49
  • outer sheet 48 includes a print area 50. It is also noted that print area 50 is located substantially in the middle of the sheet of outer sheet 48, or, alternatively, print area 39 is located remotely from edges 54 of outer sheet 48.
  • Fig. 14 is a simplified side view of inner sheet 46 and outer sheet 48 connected according to one embodiment of the present invention.
  • inner sheet 46 and outer sheet 48 are connected at seaming lines 51 (also shown in Fig. 12 ) forming venting tube 52 in between.
  • Fig. 15 is a simplified side cut through vented bag
  • Fig. 16 is a simplified illustration of a detail of Fig. 15 , according to one embodiment of the present invention.
  • vented bag 47 is created by joining together edges 53 of inner sheet 46 at seaming line 54, and by joining together edges 55 of outer sheet 48 at seaming line 56. It is noted that edges 53 of inner sheet 46 are joined separately from edges 55 of outer sheet 48. Thus forming a 'bag within a bag' (or 'vented twin-bag'), where the two bags are joined in seaming lines 51 forming venting tube 52 in-between.
  • Fig. 16 shows a detail of Fig. 15 around seaming line 54.
  • a seaming line such as seaming line 54 is typically created by joining, or connecting, an overlapping area of two sheets, such as by overlapping edges 53 of inner sheet 46.
  • This manner of joining, or connecting, shown for seaming line 54 is typical for seaming lines described herein.
  • Joining, or connecting two sheets or edges of the same sheet can be done using any appropriate means such as adhesive matter, glue, stitching, soldering, heat-sealing, fusion, etc. Fusion can be implemented by heat, laser, ultrasound, electrofusion, etc.
  • vented bag 47 enables the use of different materials for the inner bag and the outer bag.
  • the outer bag can be made from a material transparent to view and thus the print area 50 can be printed on the inner side of the outer sheet 48 to protect it from abrasive content and environment.
  • the inner bag and/or the outer bag can be made from a paper-like material, from environmental-friendly material, from compound polyethylene, from a sheet containing polyethylene and a filler material such as mineral powder, for example Calcium Carbonate, etc.
  • compound polyethylene is typically not absorbing water.
  • the inner bag and/or the outer bag can be made from a rough (not smooth) material to prevent the clinging of the inner and outer sides of venting tube 52 and improve airflow through venting tube 52.
  • sheet 44 of the inner bag of Fig. 15 can be made of 80 micron thick polyethylene sheet and sheet 48 of the outer bag of Fig. 15 can be made of 80 micron thick paper-like sheet including 50% polyethylene and 50% filler material such as Calcium Carbonate.
  • FIG. 17 is a simplified side view of vented twin-bag 57, according to one embodiment of the present invention.
  • Vented twin-bag 57 is similar to vented bag 47 of Fig. 15 . As shown in Fig. 17 , vented twin-bag 57 includes an inner bag 58 and an outer bag 59 joined at seam lines (not shown in Fig. 17 , similar to seam lines 51 of Figs. 12-15 ) thus creating a tube (or pipe) 60 between. Tube 60 includes an opening 61 to the environment in at least one end.
  • the outer bag 59 is made of paper or a plastic sheet such as polyethylene. When closed, the outer bag 59 completely sealed and is impermeable to fluids. The outer bag 59 also provides the carrying strength for transportation and handling of the vented twin-bag 57.
  • the inner bag 58 is made of paper or a plastic sheet such as polyethylene and includes a semi-permeable part 62 within the part of inner bag 58 that is a part of tube 60.
  • inner bag 58 also includes within the part of inner bag 58 that is a part of tube 60 one or more non-permeable parts 63. From a side view, inner bag 58 looks like the bag illustrated in Fig. 3 .
  • FIG. 18 is a simplified side view of an open vented twin-bag 57, according to one embodiment of the present invention.
  • Fig. 18 shows vented twin-bag 57 open at opening 64, before it is filled and the opening is closed (as shown in Fig. 17B ).
  • the openings 61 of the venting tube (or pipe) 60 are marked with a dotted line to designate that other than at openings 61 the outer bag (or sheet) 59 and the inner bag (or sheet) 58 are joined at their edges at that place.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
EP14174615.6A 2014-06-15 2014-06-26 Belüfteter Beutel und Verfahren zur Herstellung davon Withdrawn EP2955126A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL23313014 2014-06-15

Publications (2)

Publication Number Publication Date
EP2955126A2 true EP2955126A2 (de) 2015-12-16
EP2955126A3 EP2955126A3 (de) 2015-12-30

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Family Applications (1)

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EP14174615.6A Withdrawn EP2955126A3 (de) 2014-06-15 2014-06-26 Belüfteter Beutel und Verfahren zur Herstellung davon

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10759567B2 (en) * 2014-09-15 2020-09-01 Bischof + Klein Se & Co. Kg Flexible packaging container
US11214407B2 (en) * 2017-05-23 2022-01-04 Bischof + Klein Se & Co. Kg Ventilatable valve bag

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20114611U1 (de) * 2001-09-05 2002-01-03 Haver & Boecker, 59302 Oelde Mittels einer Füllmaschine gefüllter, aus mindestens einer Materiallage gefertiger und mit einem Füllventil ausgestatteter Ventilsack, bei dem zumindest die äußere Materiallage Entlüftungsöffnungen aufweist
DE102008046173B4 (de) * 2008-09-06 2010-06-17 Nordfolien Gmbh Verpackungsbehälter aus Kunststofffolie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10759567B2 (en) * 2014-09-15 2020-09-01 Bischof + Klein Se & Co. Kg Flexible packaging container
US11214407B2 (en) * 2017-05-23 2022-01-04 Bischof + Klein Se & Co. Kg Ventilatable valve bag
AU2018272943B2 (en) * 2017-05-23 2023-11-16 Bischof + Klein Se & Co. Kg Ventilatable valve bag

Also Published As

Publication number Publication date
EP2955126A3 (de) 2015-12-30

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