EP1442991A1 - Sac - Google Patents

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Publication number
EP1442991A1
EP1442991A1 EP03250390A EP03250390A EP1442991A1 EP 1442991 A1 EP1442991 A1 EP 1442991A1 EP 03250390 A EP03250390 A EP 03250390A EP 03250390 A EP03250390 A EP 03250390A EP 1442991 A1 EP1442991 A1 EP 1442991A1
Authority
EP
European Patent Office
Prior art keywords
bag
seal
further characterized
collapsed configuration
bag according
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Withdrawn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
EP03250390A
Other languages
German (de)
English (en)
Inventor
Woon Kwai Unit 816-817 North Tower Yung
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.)
Chun Yip Plastics Ltd
Original Assignee
Chun Yip Plastics 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 Chun Yip Plastics Ltd filed Critical Chun Yip Plastics Ltd
Priority to EP03250390A priority Critical patent/EP1442991A1/fr
Priority to US10/400,517 priority patent/US20040141665A1/en
Priority to HK03108763A priority patent/HK1057446A2/xx
Priority to AU2004200208A priority patent/AU2004200208A1/en
Publication of EP1442991A1 publication Critical patent/EP1442991A1/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Withdrawn legal-status Critical Current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
    • 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
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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 a bag, e.g. a bag made of a synthetic material, which may be used for containing refuse.
  • Figs. 1A to 1 C show various views of a conventional bag 10 made of a sheet of plastic material.
  • Fig. 1A shows a view of the plastic bag 10 in a fully collapsed configuration
  • Fig. 1B shows a sectional view of the plastic bag 10 taken along a line P-P in Fig. 1A.
  • a width of the sheet of plastic material is folded inward of a respective designed lateral edge of the bags 10, each forming a gusset, and a straight seal 12 is then formed near the intended bottom end and transverse to the length of the bag 10, by heat sealing at a temperature of 200 to 350°C, in the conventional manner. It is however found in practice that the region between two points, namely M and N shown in Figs.
  • a bag with an opening at a first end and at least a seal adjacent to a second end, wherein said bag is movable between a collapsed configuration in which said bag is substantially flat and an expanded configuration in which said bag is fully inflated and said opening is closed, characterized in that said seal is non-straight when said bag is in said collapsed configuration.
  • Fig. 2 shows a side view of a plastic bag according to the present invention, generally designated as 100, in a fully collapsed configuration.
  • the bag 100 has an open end 102, and a closed end 104.
  • the open end 102 may be closed in a substantially airtight manner by strings (not shown) or such other conventional closure means.
  • the bag 100 may be made of such plastic material as low density or high density polyethylene.
  • the bag 100 is shown here as formed with two seats, namely a straight seal 106, represented by a straight line ST in Fig. 2, and a non-straight seal 108, represented by a non-straight line AG. both close to the closed end 104.
  • a straight seal 106 represented by a straight line ST in Fig. 2
  • a non-straight seal 108 represented by a non-straight line AG. both close to the closed end 104.
  • the seal 106 is of the same structure as the seal 12 of the bag 10 shown in Fig. 1A, it is in fact only of cosmetic purpose in the bag 100, for the reasons to be discussed below.
  • the seal 108 is non-straight.
  • the seal 108 is made up of a straight line segment AB starting from one lateral edge of the bag 100 leading downwardly towards the closed end 104, joined by an arc BC with a centre of curvature O 2 downward of the seal 108, followed by an arc CDE with a centre of curvature O 1 upward of the seal 108, followed by an arc EF with a centre of curvature O 3 downward of the seal 108, then a straight line segment FG ending at the other lateral edge of the bag 100, It can be seen that the centre of curvature O 1 is on the longitudinal centre line L-L of the bag 100.
  • the arcs BC and EF are thus curved towards the open end 102, and the arc CDE is curved towards the bottom end 104.
  • the line ABCD is symmetrical to the line GFED about the longitudinal centre line L-L. It can also be seen that the line segments AB and FG, when extended when the bag 100 is in the fully collapsed configuration, will intersect an angle ⁇ , which is an obtuse angle.
  • the width of the bag 100 may be from 300mm to 1,000mm, depending on customer requirements, and the width of the seals 106 and 108 may be from 0.8mm to 2mm.
  • the ranges of other dimensions are as follows:
  • the distance between the points A and G to the open end 102 is shorter than the distance between the point D (where the seal 108 intersects the longitudinal centre line L-L of the bag) and the open end 102.
  • the bag 100 according to the present invention When the bag 100 according to the present invention is in its fully expanded configuration, i.e. fully inflated and substantially airtightly closed adjacent to the open end 102, although the seal 106 will still be bent upwardly towards the mouth of the bag 100, the seal 108 will however constitute a straight line, as can be seen in Fig. 3.
  • the whole of the seal 108 will contribute equally to bearing the loading of the content in the bag 100, thus increasing the loading capacity of the bag 100, when the bag 100 is in its fully expanded configuration. It is found in experiments that the loading capacity of a bag made in accordance with the present invention can be as much as eight times that of a conventional bag, i.e. one with the conventional seal 12 only, made of the same type and amount of material.
  • the seal 106 is only of cosmetic purpose only, i.e. to enhance the aesthetic appearance of the bag 100, but does not contribute to the load-bearing capacity of the bag 100.
  • the seal 108 may or may not touch the seal 106, and if the seal 108 is designed not to touch the seal 106, their distance is at the discretion of the manufacturer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
EP03250390A 2003-01-22 2003-01-22 Sac Withdrawn EP1442991A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP03250390A EP1442991A1 (fr) 2003-01-22 2003-01-22 Sac
US10/400,517 US20040141665A1 (en) 2003-01-22 2003-03-28 Bag
HK03108763A HK1057446A2 (en) 2003-01-22 2003-12-01 A bag
AU2004200208A AU2004200208A1 (en) 2003-01-22 2004-01-20 A Bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03250390A EP1442991A1 (fr) 2003-01-22 2003-01-22 Sac

Publications (1)

Publication Number Publication Date
EP1442991A1 true EP1442991A1 (fr) 2004-08-04

Family

ID=32524252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03250390A Withdrawn EP1442991A1 (fr) 2003-01-22 2003-01-22 Sac

Country Status (4)

Country Link
US (1) US20040141665A1 (fr)
EP (1) EP1442991A1 (fr)
AU (1) AU2004200208A1 (fr)
HK (1) HK1057446A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101708786A (zh) * 2009-10-27 2010-05-19 覃汉昇 一种可提高承载量的塑膜袋
JP6082208B2 (ja) * 2012-08-17 2017-02-15 株式会社ソフトマシーン ドラム缶用内袋、内袋ユニット及び充填方法
WO2015045509A1 (fr) * 2013-09-27 2015-04-02 株式会社フジシールインターナショナル Emballage de contenant de sachet et contenant de sachet
CN112399950B (zh) * 2018-08-14 2022-07-29 宝洁公司 自适应包装
US11315716B2 (en) 2018-08-14 2022-04-26 The Procter & Gamble Company Process and apparatus for the magnetization of magnetizable materials

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB776382A (en) * 1954-12-17 1957-06-05 Metal Box Co Ltd An improved bag and method of making same
FR1234140A (fr) * 1958-12-20 1960-10-14 Procédé de fabrication de sacs et sacs obtenus par ce procédé
FR1349272A (fr) * 1962-11-14 1964-01-17 Récipient en matière plastique et son procédé de fabrication
EP0933302A2 (fr) * 1998-02-02 1999-08-04 Hosokawa Yoko Co., Ltd Sac à soufflet à usage médical
US6131806A (en) * 1998-11-19 2000-10-17 Aptargroup, Inc. Dispensing structure incorporating a valve-containing fitment for mounting to a container and a package with a dispensing structure
US6193416B1 (en) * 1996-09-27 2001-02-27 Kao Corporation Gusseted bag
US6254907B1 (en) * 1999-12-21 2001-07-03 Fres-Co System Usa, Inc. Bowl bag with resealable closure means
US20020121049A1 (en) * 1996-02-26 2002-09-05 Weder Donald E. Method of covering a pot or floral grouping with a sleeve having a curvilinear lower end

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051368A (en) * 1958-11-28 1962-08-28 Schneider Dispensing container
US3762542A (en) * 1971-11-24 1973-10-02 Questor Corp Infant feeding means
FR2215359B1 (fr) * 1973-01-26 1980-03-21 Doyen Leon
JP3410142B2 (ja) * 1993-03-30 2003-05-26 株式会社平野屋物産 開封容易とした自立可能な合成樹脂製袋
US5860743A (en) * 1996-11-27 1999-01-19 The Coca-Cola Company Stable flexible pouch and method for making the pouch
US6270819B1 (en) * 1997-09-23 2001-08-07 Cryovac, Inc. Patch bag having curved seal and curved patch

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB776382A (en) * 1954-12-17 1957-06-05 Metal Box Co Ltd An improved bag and method of making same
FR1234140A (fr) * 1958-12-20 1960-10-14 Procédé de fabrication de sacs et sacs obtenus par ce procédé
FR1349272A (fr) * 1962-11-14 1964-01-17 Récipient en matière plastique et son procédé de fabrication
US20020121049A1 (en) * 1996-02-26 2002-09-05 Weder Donald E. Method of covering a pot or floral grouping with a sleeve having a curvilinear lower end
US6193416B1 (en) * 1996-09-27 2001-02-27 Kao Corporation Gusseted bag
EP0933302A2 (fr) * 1998-02-02 1999-08-04 Hosokawa Yoko Co., Ltd Sac à soufflet à usage médical
US6131806A (en) * 1998-11-19 2000-10-17 Aptargroup, Inc. Dispensing structure incorporating a valve-containing fitment for mounting to a container and a package with a dispensing structure
US6254907B1 (en) * 1999-12-21 2001-07-03 Fres-Co System Usa, Inc. Bowl bag with resealable closure means

Also Published As

Publication number Publication date
AU2004200208A1 (en) 2004-08-12
US20040141665A1 (en) 2004-07-22
HK1057446A2 (en) 2004-03-05

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