EP3257991A1 - Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel - Google Patents

Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel Download PDF

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Publication number
EP3257991A1
EP3257991A1 EP16174965.0A EP16174965A EP3257991A1 EP 3257991 A1 EP3257991 A1 EP 3257991A1 EP 16174965 A EP16174965 A EP 16174965A EP 3257991 A1 EP3257991 A1 EP 3257991A1
Authority
EP
European Patent Office
Prior art keywords
pieces
fabric
gusset
welding
extending
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Withdrawn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
EP16174965.0A
Other languages
English (en)
French (fr)
Inventor
Piero Schinasi
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.)
Codefine International SA
Original Assignee
Codefine SA
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 Codefine SA filed Critical Codefine SA
Priority to EP16174965.0A priority Critical patent/EP3257991A1/de
Priority to EP17733043.8A priority patent/EP3472381B1/de
Priority to HUE17733043A priority patent/HUE050145T2/hu
Priority to ES17733043T priority patent/ES2808101T3/es
Priority to PCT/IB2017/053535 priority patent/WO2017216742A1/en
Priority to US15/625,242 priority patent/US10550502B2/en
Publication of EP3257991A1 publication Critical patent/EP3257991A1/de
Priority to US16/590,989 priority patent/US11091863B2/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B93/00—Stitches; Stitch seams
    • 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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B13/00—Machines for sewing sacks

Definitions

  • the present invention relates to a method for production of bags for the transport and storage of bulk goods or liquids, as well as the bag obtained according to the method.
  • Bags for the transport and storage of bulk goods or liquids which are also known as "big bags", are in general made of fabrics woven from polypropylene, which fabrics may or may not be laminated.
  • the most common method for production of bags of this type consists of sewing together a plurality of pieces of fabric, so as to form a rectangular parallelepiped.
  • tubular fabrics produced by means of circular looms the pieces which are designed to be sewn together to form the bag being constituted by sections of tubular fabric which are flattened to form lengths of flat double-thickness fabric, the width of which is half the circumference of the tube.
  • US 8,950,346 B2 relates to a method permitting to sew together pieces of fabric without forming sewing holes.
  • This method uses a sewing machine comprising at least two needles operating in line one behind the other in one and the same direction so as to form a seam along a single line.
  • the perforation produced by the first needle is covered by the stitch of the second needle and the perforation produced by the second needle is made through the thread of the stitch made by the first needle, thus filling said perforation with said thread.
  • the object of the present invention is to propose a method for production of bags for the transport and storage of bulk goods or liquids, which makes it possible in particular to overcome the above-described disadvantages.
  • the present invention relates to a method for production of bags for the transport and storage of bulk goods or liquids, wherein use is made of tubular fabric cut into several pieces, which are then assembled together, comprising the steps of:
  • the present invention also relates to a bag for the transport and storage of bulk goods or liquids according to claim 8.
  • the bags according to the invention are made of pieces constituted by sections of tubular fabric flattened so as to form lengths of flat double-thickness fabric, the width of which is half the circumference of the tube.
  • Pieces of fabric of this type can be square or rectangular and form either the bottom or one of the lateral walls of the bag. It is also possible that one piece of fabric is designed to constitute both the bottom of the bag and two opposite lateral walls, two complementary pieces being designed to constitute the two other lateral walls of the bag.
  • the assembly of two adjacent pieces of fabric of the bag are carried out by sewing along a single line, which is parallel to the sides of the pieces.
  • Such a configuration is for example illustrated in figures 1 and 2 of US 8,950,346 B2 .
  • the essential concept of the production method according to the invention consists to form a gusset at one end of the pieces of fabric and to provide this gusseted end with several connecting lines or areas, said connecting lines or areas being positioned so as to distribute stresses on several portions of the pieces of fabric when they are assembled together.
  • tubular fabric 10 weighing preferably 75 to 125 grams per square meter.
  • the tubular fabric 10 has an appropriate diameter and length which is determined by the desired dimensions of the finished bag.
  • this tubular fabric 10 is then flattened so as to form a double-thickness fabric having two opposite sides, respectively an internal side 11 a and an external side 11 b, extending between two flattened edges, respectively a left edge 12 and a right edge 14, and two open or cut edges 16, 18.
  • a gusset 20 is now formed by folded in or pleating the double-thickness fabric 10 at the portion adjacent the left edge 12, said left edge 12 projecting inwards in the fabric 10 to an extent of several cm for example. Gusseting to achieve the gusset 20 may be effected as the tubular fabric 10 is flattened, and may be effected by appropriate shaping tools (not shown) past which the tubular fabric progresses, simultaneously with a gusset 24 at the right edge 14.
  • the gusset 20 is thus defined by a first oblique section 13 extending between the folded-in left edge 12 and a first gusset end 15 positioned on the external side 11 b of the fabric 10 and by a second oblique section 17 extending between said folded-in left edge 12 and a second gusset end 19 positioned on the internal side 11 a of the fabric 10.
  • the tubular fabric is cut into pieces to be assembled to form a bag.
  • the piece of fabric 10 of figures 3 and 3a is disposed adjacent to a similar piece of fabric 10'.
  • Said piece of fabric 10' is in particular defined by an internal side 11 a', an external side 11 b', a left edge 12' projecting inwards and a gusset 20' defined by a third oblique section 13' extending between the left edge 12' and a third gusset end 15' positioned on the external side 11b' and by a fourth oblique section 17' extending between said left edge 12' and a fourth gusset end 19' positioned on the internal side 11 a'.
  • the pieces of fabric 10 and 10' may advantageously be disposed such that the external side 11 b' of the piece of fabric 10' is in contact with or close to the internal side 11 a of the piece of fabric 10 and such that the first, second, third and fourth gusset ends 15, 19, 15', 19' are substantially aligned.
  • the pieces of fabric 10 and 10' are then connected together by means of a stitching or a welding extending between the second and third oblique sections 17 and 13'. Therefore, this stitching or welding does not connect together the first and fourth oblique sections 13 and 17'. As illustrated in figures 5 and 5a , the stitching or welding extends along a single connection line 21. To prevent any loss of content through the perforation made by the needles during the stitching operation, a sewing machine according to figure 4 of US 8,950,346 B2 may advantageously be used and the steps defined in claims 1 to 8 of US 8,950,346 B2 may be carried out to form the connection line 21.
  • the method of the present invention may advantageously comprise the step of providing a sewing machine equipped with at least two needles, feeding each needle with a thread and operating said needles in-line one behind the other in one and the same direction so as to produce a seam along the connection line 21 with a stitch formed by the second needle being made on the thread of a stitch formed by the first needle, the stitch formed by the second needle covering a perforation produced by the first needle, and a perforation produced by the second needle being thus made through the thread, thereby filling the perforation with the thread.
  • the method of the present invention may further comprise the step of controlling the needles such that the needles work alternately, and at equivalent stitch distances, and/or such that the second needle perforates the fabric in the middle of the stitch of the first needle.
  • the threads fed into the needles of the sewing machine may advantageously comprise multi-filament threads with a textured structure.
  • these multi-filaments threads are positioned on the external sides thereof, thus leading to a deconstruction of the threads by contact with an adjacent bag.
  • the connection line 21 is advantageously positioned so as to be protected by the first and fourth oblique sections 13 and 17', thus preventing a contact with another bag.
  • Figure 5b illustrates an optional step consisting to connect together the second and third oblique sections 13 and 17' by means of a welding, said welding extending along a line 22 extending between the connection line 21 and the virtual plane defined by the first to fourth gusset ends 15, 19, 15', 19'.
  • This welding permits to increase the level of sealing of the bag. Indeed, if any loss of content occurs through the connection line 21, this content is prevented to escape from the bag by means of said welding.
  • the pieces of fabric 10 and 10' are finally assembled together by means of seams 23 formed around or near the first to fourth gusset ends 15, 19, 15', 19'.
  • These seams 23 are properly positioned to connect together the first to fourth oblique sections 13, 17, 13', 17', but being sufficiently distant from the connection line 21 to leave a non-sewn area encompassing this connection line 21 and the left edges 12, 12' of the fabrics 10, 10'.
  • the seams 23 permit that stresses applied to the pieces of fabric 10, 10' are distributed on the first to fourth oblique sections 13, 17, 13', 17' and not concentrated only on the connection line 21.
  • a bag formed by a combination of several pieces of fabric assembled in accordance with the method illustrated in figures 1 to 6 , respectively 1 a to 6a, may have a greater level of sealing than the conventional bags, as well as a better resistance to stress.
  • several tests have shown that the bags according to the invention are substantially stronger than the bags produced by a method according to US 8,950,346 B2 . Some tests have shown 1.5 time improvements in the resistance at break.
  • FIGS 7 and 8 illustrate a bag 100 according to a preferred embodiment of the present invention.
  • This bag 100 has a parallelepiped shape and is constituted by four double-thickness pieces of fabric 101 to 104 forming the lateral sides of the bag and one piece of fabric 105 forming the bottom side of the bag.
  • the bag 100 is advantageously equipped with four lifting straps 106 positioned at the four upper corners of the bag, whereto forks of forklifts can fit or penetrate.
  • Each double-thickness piece of fabric 101 to 104 comprises a gusset 20, 20' formed at both of its ends, each gusset being connected to a gusset of an adjacent piece of fabric by respectively a stitching or welding 21 and seams 23.
  • the double-thickness fabrics 101 to 104 have the same structure as the fabrics 10, 10' illustrated in figures 6 and 6a .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP16174965.0A 2016-06-17 2016-06-17 Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel Withdrawn EP3257991A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP16174965.0A EP3257991A1 (de) 2016-06-17 2016-06-17 Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel
EP17733043.8A EP3472381B1 (de) 2016-06-17 2017-06-14 Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel
HUE17733043A HUE050145T2 (hu) 2016-06-17 2017-06-14 Eljárás ömlesztett árucikkek vagy folyadékok szállítására és tárolására szolgáló zsákok gyártására, valamint az eljárás szerint elõállított zsák
ES17733043T ES2808101T3 (es) 2016-06-17 2017-06-14 Método de producción de bolsas para el transporte y almacenamiento de líquidos o bienes a granel, y bolsa obtenida de acuerdo con el método
PCT/IB2017/053535 WO2017216742A1 (en) 2016-06-17 2017-06-14 Method for production of bags for the transport and storage of bulk goods or liquids, and bag obtained according to the method
US15/625,242 US10550502B2 (en) 2016-06-17 2017-06-16 Method for production of bags for the transport and storage of bulk goods or liquids
US16/590,989 US11091863B2 (en) 2016-06-17 2019-10-02 Bags for the transport and storage of bulk goods or liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16174965.0A EP3257991A1 (de) 2016-06-17 2016-06-17 Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel

Publications (1)

Publication Number Publication Date
EP3257991A1 true EP3257991A1 (de) 2017-12-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16174965.0A Withdrawn EP3257991A1 (de) 2016-06-17 2016-06-17 Verfahren zur herstellung von beuteln zum transport und zur lagerung von schüttgütern oder flüssigkeiten und durch das verfahren erhaltener beutel

Country Status (1)

Country Link
EP (1) EP3257991A1 (de)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3291375A (en) * 1965-05-11 1966-12-13 Albemarle Paper Mfg Company Multi-ply bag
GB1062552A (en) * 1962-08-16 1967-03-22 Korsnas G M B H A method of producing bags
EP0000838A1 (de) * 1977-08-06 1979-02-21 Tay Textiles Limited Biegsamer Schüttgutbehälter
GB2301087A (en) 1995-05-24 1996-11-27 Storsack Austria Gmbh Transport sack
US6371646B1 (en) * 2000-07-26 2002-04-16 Scholle Custom Packaging, Inc. Bulk bag with multiple ply walls and a method of forming it from tubular blanks
JP2004033548A (ja) 2002-07-04 2004-02-05 Johnson Controls Automotive Systems Corp 本縫いミシン
US6694528B1 (en) * 2003-04-16 2004-02-24 J. Adams & Associates Limited Laminated assembly seam of outdoor garment and process of making same
JP2005118400A (ja) 2003-10-20 2005-05-12 Mikasa:Kk ミシン
US20050188907A1 (en) * 2004-02-27 2005-09-01 American & Efird, Inc. Sewing method to increase seam strength
WO2013070516A1 (en) * 2011-11-08 2013-05-16 Composite Containers Llc Silosack container
US20140363106A1 (en) * 2013-06-05 2014-12-11 Ameriglobe, Llc. Method of production of fabric bags or containers using heat fused seams
US8950346B2 (en) 2008-12-24 2015-02-10 Codefine S.A. Method for production of bags for the transport and storage of bulk goods, and bag obtained according to the method

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1062552A (en) * 1962-08-16 1967-03-22 Korsnas G M B H A method of producing bags
US3291375A (en) * 1965-05-11 1966-12-13 Albemarle Paper Mfg Company Multi-ply bag
EP0000838A1 (de) * 1977-08-06 1979-02-21 Tay Textiles Limited Biegsamer Schüttgutbehälter
GB2301087A (en) 1995-05-24 1996-11-27 Storsack Austria Gmbh Transport sack
US6371646B1 (en) * 2000-07-26 2002-04-16 Scholle Custom Packaging, Inc. Bulk bag with multiple ply walls and a method of forming it from tubular blanks
JP2004033548A (ja) 2002-07-04 2004-02-05 Johnson Controls Automotive Systems Corp 本縫いミシン
US6694528B1 (en) * 2003-04-16 2004-02-24 J. Adams & Associates Limited Laminated assembly seam of outdoor garment and process of making same
JP2005118400A (ja) 2003-10-20 2005-05-12 Mikasa:Kk ミシン
US20050188907A1 (en) * 2004-02-27 2005-09-01 American & Efird, Inc. Sewing method to increase seam strength
US8950346B2 (en) 2008-12-24 2015-02-10 Codefine S.A. Method for production of bags for the transport and storage of bulk goods, and bag obtained according to the method
WO2013070516A1 (en) * 2011-11-08 2013-05-16 Composite Containers Llc Silosack container
US20140363106A1 (en) * 2013-06-05 2014-12-11 Ameriglobe, Llc. Method of production of fabric bags or containers using heat fused seams

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