EP0212021A1 - Sac à fond portable - Google Patents

Sac à fond portable Download PDF

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Publication number
EP0212021A1
EP0212021A1 EP85305882A EP85305882A EP0212021A1 EP 0212021 A1 EP0212021 A1 EP 0212021A1 EP 85305882 A EP85305882 A EP 85305882A EP 85305882 A EP85305882 A EP 85305882A EP 0212021 A1 EP0212021 A1 EP 0212021A1
Authority
EP
European Patent Office
Prior art keywords
heat
sealed
tubular body
portions
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.)
Withdrawn
Application number
EP85305882A
Other languages
German (de)
English (en)
Inventor
Sozaburo Adachi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP85305882A priority Critical patent/EP0212021A1/fr
Publication of EP0212021A1 publication Critical patent/EP0212021A1/fr
Withdrawn legal-status Critical Current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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms

Definitions

  • This invention relates to a portable bottomed bag, more particularly, to such a portable bottomed bag that has a hexagonal bottom face portion with reinforcing, self-sustaining fins formed thereon.
  • Most conventional bottomed bags have a rectangular bottom face formed by inwardly folding and overlapping the lower end portion of a tubular body of the bag.
  • Prior art bottomed bags with a hexagonal bottom face include such ones that are shown in Figures 1 to 3.
  • Said prior art bottomed bags illustrated in Figures 2 and 3 can be constructed by expanding and folding the lower end portions 2, 2' along line L as shown in Figure 1 so that there can be formed right isosceles triangles A, A' and then folding along parallel lines L1, L2 upper and lower trapeziums T1, T2 thus formed respectively; the parallel lines L1, L2 are preferably set so that end portions 2, 2' of the tubular body may be completely overlapped, or in other words, each distance between the end portion 2 and 2' and L1 or L2 are equal to that between lines L1 and L2.
  • the bottomed bag shown in Figure 2 can be used as it is as a finished one, but the bottom face thereof may be covered by sticking a film or sheet 4 thereon as shown in Figure 3 to reinforce it or to give a good appearance.
  • a film or sheet 4 thereon as shown in Figure 3 to reinforce it or to give a good appearance.
  • such bottomed bags cannot be watertightly sealed even if synthetic resin material or the like is employed, since the bottom face portion is not heat sealed. Further, it lacks self-sustainability since the bottom face is formed only by folding and overlapping the lower end portions 2, 2' or by further covering it with film or sheet 4.
  • the object of the present invention is the provision of a portable bottomed bag which has a good appearance in itself and gives the accommodated contents an appearance of plentifulness aided by such unique configuration that has a flat upper opening portion and is capable of sustaining the bag itself upright by virtue of a hexagonal bottom face with reinforcing, heat-sealing fin portions projecting sideward therefrom. It is to be noted that, when an airtight and watertight material is employed for the formation of the bag, there can be provided a completely sealed, airtight and watertight bottom face in accordance with the present invention.
  • the gist of the present invention is to give a new and improved bottomed bag, the bottom face of which is hexagonal shaped which has lateral, parallel and symmetrical fin portions that are formed by the following method.
  • a portable bottomed bag defined by the features of claim 1.
  • the lower end portion of a tubular body is folded at a suitable fold or reference line, the distance of which from the lower end portion is a little longer than half of the face width of the tubular body so that there may be formed a square portion with some margins overlapped with each other by fully expanding the lower end portion thus formed up and down or by fully pulling apart the respective lower end centre portions of the front and rear-layers of the tubular body.
  • the margins are then heat sealed in edge joint style to form the first heat-sealed portion.
  • the upper and lower halves of the square portion are heat sealed each at desired positions over a fixed width to form a hexagonal bottom face. Those portions outside of the secondly heat-sealed portions of the upper and lower halves are cut off to leave reinforced, self-­sustaining fins, or the secondly heat-sealed portions alone.
  • FIG. 4 to 8 there is illustrated a bottomed bag formed from a synthetic resin material.
  • manufacturing stages thereof will be described with reference to Figures 4 to 7.
  • a tubular body 13 as having a heat-sealed portion 11 formed by heat sealing in edge joint both the side edges of a synthetic resin film of a suitable width folded in half, such heat sealing is not required when the tubular body 13 is originally of such an endless or seamless annular type.
  • the heat sealing may be of course effected by lap jointing together both side edges of the film which are folded in half instead of the above edge joint style.
  • both side edge portions of a fixed width of rectangular film of suitable size are previously heat sealed in edge joint style to form the tubular body 13.
  • fold lines 12a, 12b at both side edges to permit expansion or contraction of the tubular body 13.
  • the sealed portion 11 is folded to or further heat sealed with either side of the base layer so as to mate with the tubular body portion 13.
  • Figures 4 to 7 illustrate formation stages of an embodiment of the bottomed bag according to the present invention, wherein the lower end of the tubular body is folded so as to form a hexagonal bottom face 14 which will be described in detail hereinafter.
  • the lower portion of the tubular body 13 is folded onto the front layer to form a fold or reference line as shown in Figure 4.
  • the fold line is positioned on such distance D from the lower end of the tubular body 13 to permit the formation of a square bottom portion 14 defined by four sides 21a, 21b, 22a and 22b as shown in Figures 4 to 7 with sufficient margins to be then edge-jointed with each other formed on line J-J, which margins are also to be heat sealed to constitute the bottom of the bag as shown in Figures 6 and 7 such distance D being a little longer than half of the bag face width W. In other words, when the distance D is exactly equal to half of the bag face W, then there is formed only the square portion 14 without leaving any margins which serve to constitute a sealed portion.
  • the formation of the square bottom portion 14 is effected as shown in Figure 5 by opening the lower end of the tubular body 13 and bending side folds 12a, 12b respectively centrewards while stretching both margins 15 along the line J-J.
  • the margins are jointed with each other and then heat sealed in edge joint style to constitute a centre heat-sealed joint 15 as shown in Figure 5.
  • the centre heat-sealed joint 15 is then bent to either side, for example, to the left in the Figure, of the square portion 14 as clearly shown in Figure 6.
  • both upper and lower halves of the square portion 14 are heat sealed along upper and lower parallel and symmetrical heat sealing lines 16a, 16b to form parallel symmetrical heat-sealed portions 17a, 17b.
  • Edge or tip triangular portions 23a, 23b outside the heat-sealed portions 17a, 17b of the upper and lower halves are cut off thereafter to leave the hexagonal bottom face 14 with upper and lower fins or the heat-sealed portions 17a, 17b which project sidewards from the bottom face.
  • the portable bottomed bag of the present invention has not only a good appearance derived from its unique configuration that has wide upper end opening portions while a rather narrow or tapered lower end portion in front view with both side corner portions 18a, 18b turned up when it is filled with contents and the upper opening is closed or sealed by heat sealing or the like conventional means, but also provide a self-sustainability as a result that the reinforced heat-­sealed fin portions projecting sidewards from the hexagonal bottom face portion serve as legs for supporting the bag upright.
  • reference numeral 9 denotes an upper end sealing line
  • 20 denotes a notch for tearing the bag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP85305882A 1985-08-19 1985-08-19 Sac à fond portable Withdrawn EP0212021A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP85305882A EP0212021A1 (fr) 1985-08-19 1985-08-19 Sac à fond portable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85305882A EP0212021A1 (fr) 1985-08-19 1985-08-19 Sac à fond portable

Publications (1)

Publication Number Publication Date
EP0212021A1 true EP0212021A1 (fr) 1987-03-04

Family

ID=8194333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85305882A Withdrawn EP0212021A1 (fr) 1985-08-19 1985-08-19 Sac à fond portable

Country Status (1)

Country Link
EP (1) EP0212021A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016043157A1 (fr) * 2014-09-17 2016-03-24 株式会社フジシールインターナショナル Procédé de fabrication de matériau d'emballage de récipient de type sachet, procédé de fabrication de récipient de type sachet, matériau d'emballage de récipient de type sachet, et récipient de type sachet
CZ305977B6 (cs) * 2013-12-17 2016-06-01 Velteko S.R.O. Asymetrický fóliový sáček
WO2017056558A1 (fr) * 2015-09-28 2017-04-06 株式会社フジシールインターナショナル Procédé de fabrication de matériau d'emballage de récipient de type sachet, dispositif de fabrication de matériau d'emballage de récipient de type sachet, et produit intermédiaire de matériau d'emballage de récipient de type sachet
JP2017164978A (ja) * 2016-03-16 2017-09-21 株式会社フジシールインターナショナル パウチ容器用包材の製造方法およびパウチ容器用包材の製造装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017069A (en) * 1959-11-09 1962-01-16 American Bag & Paper Corp Bag
GB937010A (en) * 1961-04-15 1963-09-18 R W Barraclough Ltd Improvements in or relating to the manufacture of containers having block bottoms
US3237845A (en) * 1962-01-11 1966-03-01 Continental Can Co Bag

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017069A (en) * 1959-11-09 1962-01-16 American Bag & Paper Corp Bag
GB937010A (en) * 1961-04-15 1963-09-18 R W Barraclough Ltd Improvements in or relating to the manufacture of containers having block bottoms
US3237845A (en) * 1962-01-11 1966-03-01 Continental Can Co Bag

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305977B6 (cs) * 2013-12-17 2016-06-01 Velteko S.R.O. Asymetrický fóliový sáček
WO2016043157A1 (fr) * 2014-09-17 2016-03-24 株式会社フジシールインターナショナル Procédé de fabrication de matériau d'emballage de récipient de type sachet, procédé de fabrication de récipient de type sachet, matériau d'emballage de récipient de type sachet, et récipient de type sachet
JPWO2016043157A1 (ja) * 2014-09-17 2017-06-29 株式会社フジシールインターナショナル パウチ容器用包材の製造方法、パウチ容器の製造方法、パウチ容器用包材およびパウチ容器
WO2017056558A1 (fr) * 2015-09-28 2017-04-06 株式会社フジシールインターナショナル Procédé de fabrication de matériau d'emballage de récipient de type sachet, dispositif de fabrication de matériau d'emballage de récipient de type sachet, et produit intermédiaire de matériau d'emballage de récipient de type sachet
JPWO2017056558A1 (ja) * 2015-09-28 2018-07-19 株式会社フジシールインターナショナル パウチ容器用包材の製造方法、パウチ容器用包材の製造装置およびパウチ容器用包材の中間品
JP2017164978A (ja) * 2016-03-16 2017-09-21 株式会社フジシールインターナショナル パウチ容器用包材の製造方法およびパウチ容器用包材の製造装置

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