US3508701A - Gusseted bags - Google Patents

Gusseted bags Download PDF

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Publication number
US3508701A
US3508701A US762024A US3508701DA US3508701A US 3508701 A US3508701 A US 3508701A US 762024 A US762024 A US 762024A US 3508701D A US3508701D A US 3508701DA US 3508701 A US3508701 A US 3508701A
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United States
Prior art keywords
bag
revised
gusset
line
corner
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.)
Expired - Lifetime
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US762024A
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English (en)
Inventor
Akio Saito
Yoshio Matsumoto
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Showa Paxxs Corp
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Showa Paxxs 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 Showa Paxxs Corp filed Critical Showa Paxxs Corp
Application granted granted Critical
Publication of US3508701A publication Critical patent/US3508701A/en
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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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides

Definitions

  • This invention relates to improvements in gusseted bags fabricated by one pasting step from paper or the similar lilnd of flexible sheet material, such as synthetic resin
  • the conventional gusseted bags fabricated by one adherlng step that is, in the bags fabricated such that both sides thereof are provided respectively with a gusset so as to form the side walls of the bag and also to form approximately a hexahedron when lled with the packaged material
  • the most typical construction of the opening portion at the top and the base portion is made such that the end portion of the opposing surface of each of said gussets is stepped up to the right or left side viewing from the crease line of each of said gussets and that there is the end portion of one of the bag surface at the upper position of said stepped portion, and if said one of the bag surface is the front surface of the bag, the end portion of the other of the bag surface, namely of the rear surface of the bag, is stepped down with respect to the end portion fo the front surface thereof so as
  • the opening portion of the bag in which said gussets are folded inwardly along each crease line appears in the stepped form on one surface without completely overlapping among the end portion of the front surface of the bag,
  • each end portion of the two opposing surfaces of the respective folded gussets, and the end portion of the rear surfaces of the bag that is, in the state of these portions being respectively slipped out somewhat, and accordingly glue is applied to said opening portion formed by said slipped portions and then said opening portion is folded at the neighbourhood of the end portion of the rear surface of the bag and preferably along the inside thereof somehwat thereby to bond the front surface portion and the rear surface portion of the bag together, and thus the closure of said opening portion can be completed.
  • closure According to the method of such closure, one pasting step is possible and also the closure can be made securely with a large strength and consequently not only the work for manufacturing bags but also the work for filling the bag with packaged material have been able to be remarkably rationalized.
  • the stepped portion having approximately right angle is formed respectively in the boundary lines between the front surface portion of the bag and one surface of the gusset, between the opposing surfaces of the gusset, and between one surface of the gusset and the rear surface portion of the bag,
  • a bag having the construction such that in the bag in which the respective end portion of the front surface portion of the bag, the opposing surface of gussets and the rear surface portion of the bag are in the stepped form, a part or all of the corner portions of the respective end portions contiguous to each other are revised respectively to the angle exceeding It is another object of this invention to provide a bag formed by cutting off some part of the corner portions which are in the sharp form at the angle of 90 as the concrete means of revision of corner portions.
  • the opposing surfaces of gussets and the rear surface portions of the bag are revised respectively to the angle exceeding 90, the apprehension for lowering of strength of the bag from said corner portions in the direction of boundary lines is greatly decreased.
  • the cutting in the stepped form of the aforesaid bag blank is in general carried out by putting the seam of the same stepped form on said bag blank and then by separating the seamed portion in the longitudinal direction, and according to this invention, there is a further advantage such that the totally extended length of said seam for cutting is more shortened.
  • FIG. 1 shows a perspective view of a partial development of one of the most preferable embodiments of the bags according to this invention
  • FIGS. 2, 3 and 4 are respectively schematic views showing only the necessary parts in several other embodiments of this invention, that is, FIG. 2 is a schematic View in which the end portion of a gusset has been re- 3 vised by an oblique line; FIG. 3 is a schematic view in which only the edge of the surface of either one of the gussets has been revised by an oblique line; FIG. 4 is a schematic view in which the edges of both surfaces of the gusset have been revised in the same way as shown in FIG. 3;
  • FIG. 5 is a schematic view of other modications in the combination of two kinds of revised bag blanks
  • FIGS. 6a and 6b are schematic views of further modifications in the combination of non-revised bag blanks and revised bag blanks.
  • FIG. 7 is a schematic view of the preferable modificafication of the moditication as shown in FIG. 2.
  • the portion of one surface edge in the uppermost position of the opening of the bag 1 is designated as a front surface portion 2, the edge of the other surface portion is in the lowermost position and designated as a rear surface portion 3, and the edges of the opposed surfaces 4, 5 of gusset are disposed therebetween in the stepped form.
  • the respective edges of the front surface portion 2 of the bag, the opposing surfaces of gussets 4, 5, and of the rear surface portion 3 of the bag are crossed approximately at right angle in the line connecting their edges at their contiguous positions, thereby to form the corner portions of approximately right angle at these portions.
  • the ⁇ corner portion from the front surface portion 2 to the rst surface 4 of the gusset is cut oif along an oblique line 6, thereby to revise said corner portion between the second surface 5 of the gusset 7, 8 exceeding 90 at least, and in the same manner the corner portion between the second suface of the gusset and the rear surface portion 3 of the bag is revised along an oblique line 9 thereby to form two corner portions 10, 11 exceeding 90.
  • the configuration of the closed opening portion of the bag such that the opening portion was folded along a folding line 12 and adhered with glue becomes more strong than the conventional bags.
  • the configuration of the opening portion of the bag is as mentioned above, but the other end portion of the bag, namely the base portion thereof has somewhat different form, for the reason that the bag blank is cut off continuously from, for example, a lengthy coil 13.
  • the corresponding corner portion is revised along the oblique lines 14, 15 corresponding to the aforesaid oblique lines 6, 9 and also in the case that the base portion is folded, the bonding area increases due to the oblique line 15, as shown in a. Further, the leakage from the corner portion in the case of the base portion along a fold line 16 can be prevented by the oblique line 14, as shown in b, these being ad-V vantages of this invention.
  • fold lines 12, 16 in the case of the said opening portion or base portion of the bag being closed are not limited to the above-mentioned illustration.
  • the position of the fold line 12 may be substituted by the position of 12 which is an edge line of the rear surface portion 3 of the bag. In this case, the number of the ply to be folded is decreased and the folding work becomes easier.
  • the b portion is formed by the oblique line 14 and can prevent almost completely the leakage of the packaged material. Further, in the same way as mentioned above, it is easier to put the fold line at the position of 16 in place of the fold line 16.
  • the edges of the opposing surfaces 20, 21 of the gusset having been revised in such a manner as mentioned above so that the oblique line of said edges may form a straight line in one direction.
  • the crease line 23 of the gusset is extended from the vicinity of the middle of said oblique line 22 to the longitudinal direction of the bag, so that in the case of folding said gusset at said crease line, as shown in the right hand of the drawing, the edge of the opposing surfaces 20, 21 of said gusset appear in the shape of a letter V laid down in the side and thus the bonding area of said edges increases.
  • said edges have such shape, there is the advantage that the shape of the opening portion of the bag becomes just same as that of the base portion of the bag.
  • the edge of one opposing surface 30 of the gusset forms a horizontal line and the edge of the other opposing surface thereof forms an oblique line 32 which is inclined in one direction.
  • said oblique line 32 revises the corner portion of said opposing surface, and at the same time only the c portion of the other opposing surface of the gusset appears.
  • each of both opposing surfaces 40, 41 of the gusset is respectively revised by oblique lines 42, 43 which is the modified embodiment of this invention.
  • oblique lines 42, 43 There is left a straight line portion between the oblique lines 42 and 43, and from the middle of said straight line a crease line of the gusset is extended longitudinally. Accordingly, in the case of folding the gusset at said crease line, as shown in the right hand of the drawing, the first surface portion 40 of the gusset appears in the shape of a letter V laid down on the side, as shown with the d portion.
  • FIG. 5 there is shown the combination of two ply blanks of the bag which are respectively revised in their corner portions in the same way as in the embodiment of FIG. l.
  • the oblique lines 50, 50' or 51, 51 in the revised corner portions are overlapped in the slightly slipped state and also in the state such that the front surface portion of the bag and the back surface portion thereof are slipped in the same degree.
  • the respective edges ofthe combined ply blanks appear in proportion to the slipping degree of said oblique lines 50, 50 or 51, 51', as shown with e and f portions, and thus the closure strength becomes larger.
  • FIG. 6 there is shown the embodiment in the combination of the corner portion revised as in this invention and the non-revised corner portion.
  • the non-revised ply 61 and the revised ply 62 are combined as shown in the drawing.
  • the revision is made at two positions of the opposing surfaces 63 and 64 of the gusset, and in the middle of the revised oblique line 65, 6'5' the stepped vertical line of the non-revised ply 61 is positioned.
  • Some slipped portion 66 is respectively taken in the lower edge lines in advance.
  • the revised oblique line of the revised ply 62h corresponding to the aforesaid revised ply 62 makes one oblique line 65h, which forms an exposed portion g having a shape of V-letter on the opposing surfaces of the gusset by folding at the middle thereof.
  • the edge line of nonrevised ply 61 appears on the position in which said exposed portion g is divided into two parts.
  • the bonding strength of the bag increases remarkably by combining the revised ply with the non-revised ply. According to such combinations as mentioned above, various kinds of modiiications can be thought out.
  • the essential points of this invention consist in that the corner portion of the bag blank in the end portion of each of the front surface portion or the rear surface portion of the bag or the gusset provided therebetween is revised to the angle exceeding 90; such revision can be made by, for example, cutting off or partially cutting the bag blank; and that as other modiiications of this invention, conventional bag blanks which are not revised in corner portions can be variously combined.
  • a gusseted bag fabricated by a single pasting step from a blank in which the respective end portions of the front surface portion, the rear surface portion, and the opposing surfaces of the gussets therebetween are parallel, stepped and successively joined by perpendicular edge surfaces to thereby form corners, the improvement wherein at lease one of said corners is cut off to form an angle greater than with its respective perpendicular edge surface.
  • said angle greater than 90 is formed by cutting along an oblique line connecting the perpendicular edge surfaces between said front surface portion and one gusset and between said rear surface portion and the other gusset, respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
US762024A 1968-02-06 1968-09-24 Gusseted bags Expired - Lifetime US3508701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43007262A JPS5013714B1 (enrdf_load_stackoverflow) 1968-02-06 1968-02-06

Publications (1)

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US3508701A true US3508701A (en) 1970-04-28

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Application Number Title Priority Date Filing Date
US762024A Expired - Lifetime US3508701A (en) 1968-02-06 1968-09-24 Gusseted bags

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JP (1) JPS5013714B1 (enrdf_load_stackoverflow)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150912A (en) * 1983-12-08 1985-07-10 Sengewald Karl H Plastics bag and manufacture thereof
US5507579A (en) * 1993-12-13 1996-04-16 Perseco Division Of The Havi Group Lp Sandwich bag
US6367976B1 (en) 2000-06-08 2002-04-09 Bemis Company, Inc. Multi-gusset for pinch closure bag
US6599016B1 (en) 2002-02-14 2003-07-29 Stone Container Corporation Pinch bottom bag with tear strip
USD545216S1 (en) 2005-12-13 2007-06-26 Kellogg Company Bowl bag
US20100158418A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Heat activated adhesives for bag closures
EP2210818A1 (de) * 2009-01-21 2010-07-28 Papier-Mettler - Inh. Michael Mettler Seitenfaltenbeutel mit Umklappboden sowie Materialbahnabschnitt, eingerichtet und geeignet für die Herstellung dieses Seitenfaltenbeutels
US20100189380A1 (en) * 2008-12-22 2010-07-29 Gary Sargin Heat Activated Adhesives for Bag Closures
US20100192520A1 (en) * 2008-12-22 2010-08-05 Jansen Mark E Heat activated adhesives for bag closures
US20100293897A1 (en) * 2009-05-21 2010-11-25 Jansen Mark E Heat Activated Adhesives for Bag Closures
US20110019944A1 (en) * 2008-12-22 2011-01-27 Gary Sargin Method and system for folding and sealing bags
US20110103721A1 (en) * 2009-05-15 2011-05-05 Gary Sargin Bag having sealable gussets
US8443578B2 (en) 2008-12-22 2013-05-21 Coating Excellence International Llc Apparatus for bag closure and sealing using heated air
US20140140642A1 (en) * 2012-11-20 2014-05-22 Polytex Fibers Corporation Methods of Sealing Plastic Bags and Plastic Bags Made by the Methods
US20150284164A1 (en) * 2014-04-04 2015-10-08 Polytex Fibers Corporation Woven Plastic Bags With Features That Reduce Leakage, Breakage and Infestations
BE1023191B1 (nl) * 2015-05-20 2016-12-15 Ace Packaging Nv Werkwijze voor de vervaardiging van een verpakking voor brood
US9669981B2 (en) 2012-02-13 2017-06-06 Polytex Fibers Corporation Easy open plastic bags
US9731868B2 (en) 2012-10-12 2017-08-15 Polytex Fibers Corporation Polymeric bags with easy access features attached to the bags without adhesives
US20170275073A1 (en) * 2012-02-13 2017-09-28 Polytex Fibers Corporation Woven Plastic Bags With Features That Reduce Leakage, Breakage and Infestations
US9845184B2 (en) 2012-02-13 2017-12-19 Polytex Fibers Corporation Easy open plastic bags
US9926106B2 (en) 2013-01-22 2018-03-27 Polytex Fibers Corporation Easy access woven plastic bags
US9969529B2 (en) 2012-02-13 2018-05-15 Polytex Fibers Corporation Easy open plastic bags
US10661963B2 (en) 2014-04-04 2020-05-26 Polytex Fibers Corporation Peelable easy open plastic bags
US11305927B2 (en) 2014-04-04 2022-04-19 Polytex Fibers Llc Easy open plastic bags
US11459157B2 (en) 2012-02-13 2022-10-04 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage and infestations
US11472622B2 (en) 2014-04-04 2022-10-18 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage, and infestations
US12234076B2 (en) 2012-02-13 2025-02-25 Polytex Fibers Llc Peelable easy open plastic bags

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233515U (enrdf_load_stackoverflow) * 1975-08-30 1977-03-09
JPS53810U (enrdf_load_stackoverflow) * 1976-06-23 1978-01-07
JPS5465716U (enrdf_load_stackoverflow) * 1977-10-17 1979-05-10

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US426607A (en) * 1890-04-29 Paper bag
CA766127A (en) * 1967-08-29 Korsnas G.M.B.H. Gusseted bag or sack

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US426607A (en) * 1890-04-29 Paper bag
CA766127A (en) * 1967-08-29 Korsnas G.M.B.H. Gusseted bag or sack

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150912A (en) * 1983-12-08 1985-07-10 Sengewald Karl H Plastics bag and manufacture thereof
US5507579A (en) * 1993-12-13 1996-04-16 Perseco Division Of The Havi Group Lp Sandwich bag
US6367976B1 (en) 2000-06-08 2002-04-09 Bemis Company, Inc. Multi-gusset for pinch closure bag
US6599016B1 (en) 2002-02-14 2003-07-29 Stone Container Corporation Pinch bottom bag with tear strip
USD545216S1 (en) 2005-12-13 2007-06-26 Kellogg Company Bowl bag
US8443578B2 (en) 2008-12-22 2013-05-21 Coating Excellence International Llc Apparatus for bag closure and sealing using heated air
US9233502B2 (en) 2008-12-22 2016-01-12 Coating Excellence International Llc Method and apparatus for bag closure and sealing
US20100189380A1 (en) * 2008-12-22 2010-07-29 Gary Sargin Heat Activated Adhesives for Bag Closures
US20100192520A1 (en) * 2008-12-22 2010-08-05 Jansen Mark E Heat activated adhesives for bag closures
US20100158418A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Heat activated adhesives for bag closures
US20110019944A1 (en) * 2008-12-22 2011-01-27 Gary Sargin Method and system for folding and sealing bags
US8475046B2 (en) 2008-12-22 2013-07-02 Coating Excellence International Llc Heat activated adhesives for bag closures
US8240915B2 (en) * 2008-12-22 2012-08-14 Coating Excellence International Llc Heat activated adhesives for bag closures
US8297840B2 (en) * 2008-12-22 2012-10-30 Coating Excellence International Llc Heat activated adhesives for bag closures
EP2210818A1 (de) * 2009-01-21 2010-07-28 Papier-Mettler - Inh. Michael Mettler Seitenfaltenbeutel mit Umklappboden sowie Materialbahnabschnitt, eingerichtet und geeignet für die Herstellung dieses Seitenfaltenbeutels
US20110103721A1 (en) * 2009-05-15 2011-05-05 Gary Sargin Bag having sealable gussets
US20100293897A1 (en) * 2009-05-21 2010-11-25 Jansen Mark E Heat Activated Adhesives for Bag Closures
US9669981B2 (en) 2012-02-13 2017-06-06 Polytex Fibers Corporation Easy open plastic bags
US11897660B2 (en) 2012-02-13 2024-02-13 Polytex Fibers Llc Easy open plastic bags
US11597573B2 (en) 2012-02-13 2023-03-07 Polytex Fibers Llc Peelable easy open plastic bags
US11459157B2 (en) 2012-02-13 2022-10-04 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage and infestations
US11066212B2 (en) 2012-02-13 2021-07-20 Polytex Fibers Corporation Methods of making easy open plastic bags
US9969529B2 (en) 2012-02-13 2018-05-15 Polytex Fibers Corporation Easy open plastic bags
US12234076B2 (en) 2012-02-13 2025-02-25 Polytex Fibers Llc Peelable easy open plastic bags
US11027888B2 (en) 2012-02-13 2021-06-08 Polytex Fibers Corporation Easy open plastic bags
US20170275073A1 (en) * 2012-02-13 2017-09-28 Polytex Fibers Corporation Woven Plastic Bags With Features That Reduce Leakage, Breakage and Infestations
US10913587B2 (en) 2012-02-13 2021-02-09 Polytex Fibers Corporation Easy open plastic bags
US9845184B2 (en) 2012-02-13 2017-12-19 Polytex Fibers Corporation Easy open plastic bags
US10766667B2 (en) 2012-02-13 2020-09-08 Polytex Fibers Corporation Easy open plastic bags
US10562689B2 (en) * 2012-02-13 2020-02-18 Polytex Fibers Corporation Woven plastic bags with features that reduce leakage, breakage and infestations
US9731868B2 (en) 2012-10-12 2017-08-15 Polytex Fibers Corporation Polymeric bags with easy access features attached to the bags without adhesives
US10287062B2 (en) * 2012-10-12 2019-05-14 Polytex Fibers Corporation Polymeric bags with easy access features attached to the bags without adhesives
US20170369209A1 (en) * 2012-10-12 2017-12-28 Polytex Fibers Corporation Polymeric Bags With Easy Access Features Attached to the Bags Without Adhesives
US10035637B2 (en) * 2012-11-20 2018-07-31 Polytex Fibers Corporation Plastic bags
US20140140642A1 (en) * 2012-11-20 2014-05-22 Polytex Fibers Corporation Methods of Sealing Plastic Bags and Plastic Bags Made by the Methods
US20170297801A1 (en) * 2012-11-20 2017-10-19 Polytex Fibers Corporation Plastic Bags
US9663284B2 (en) * 2012-11-20 2017-05-30 Polytex Fibers Corporation Methods of sealing plastic bags and plastic bags made by the methods
US9926106B2 (en) 2013-01-22 2018-03-27 Polytex Fibers Corporation Easy access woven plastic bags
US10676242B2 (en) 2013-01-22 2020-06-09 Polytex Fibers Corporation Easy access woven plastic bags
US11472604B2 (en) 2013-01-22 2022-10-18 Polytex Fibers Llc Easy access woven plastic bags
US11305927B2 (en) 2014-04-04 2022-04-19 Polytex Fibers Llc Easy open plastic bags
US9669983B2 (en) * 2014-04-04 2017-06-06 Polytex Fibers Corporation Woven plastic bags with features that reduce leakage, breakage and infestations
US20170247160A1 (en) * 2014-04-04 2017-08-31 Polytex Fibers Corporation Woven Plastic Bags With Features That Reduce Leakage, Breakage and Infestations
US11472622B2 (en) 2014-04-04 2022-10-18 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage, and infestations
US10759585B2 (en) * 2014-04-04 2020-09-01 Polytex Fibers Corporation Woven plastic bags with features that reduce leakage, breakage and infestations
US11801987B2 (en) * 2014-04-04 2023-10-31 Polytex Fibers Llc Woven plastic bags with angled and/or radial cuts
US20150284164A1 (en) * 2014-04-04 2015-10-08 Polytex Fibers Corporation Woven Plastic Bags With Features That Reduce Leakage, Breakage and Infestations
US10661963B2 (en) 2014-04-04 2020-05-26 Polytex Fibers Corporation Peelable easy open plastic bags
US12234075B2 (en) 2014-04-04 2025-02-25 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage, and infestations
US12240675B2 (en) 2014-04-04 2025-03-04 Polytex Fibers Llc Woven plastic bags with angled and/or radial cuts
BE1023191B1 (nl) * 2015-05-20 2016-12-15 Ace Packaging Nv Werkwijze voor de vervaardiging van een verpakking voor brood

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Publication number Publication date
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