US3812644A - Method for packaging flowable materials and apparatus for manufacturing packaging bags - Google Patents

Method for packaging flowable materials and apparatus for manufacturing packaging bags Download PDF

Info

Publication number
US3812644A
US3812644A US00288356A US28835672A US3812644A US 3812644 A US3812644 A US 3812644A US 00288356 A US00288356 A US 00288356A US 28835672 A US28835672 A US 28835672A US 3812644 A US3812644 A US 3812644A
Authority
US
United States
Prior art keywords
packaging
folded
tubular film
opening
sides
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
Application number
US00288356A
Other languages
English (en)
Inventor
K Kamikawa
S Kawabe
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.)
Nisseki Plastic Chemical Co
CHUBA KIKAI CO Ltd
Original Assignee
Nisseki Plastic Chemical Co
CHUBA KIKAI CO 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 Nisseki Plastic Chemical Co, CHUBA KIKAI CO Ltd filed Critical Nisseki Plastic Chemical Co
Application granted granted Critical
Publication of US3812644A publication Critical patent/US3812644A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles

Definitions

  • a ABSTRACT A method for packaging a flowable material comprising folding a flattened tubular film of a thermoplastic material such as polyethylene so that both sides thereof are folded inward; sealing the thus folded tubular film at the position which is to be the top of the finished package; unfolding the opening of the folded tubular film so that the inwardly folded portions are turned outward and the opening comprises two layers; introducing a flowable material in the thus formed bag; sealing the opening in thetwo layer state; and pressing flat the two layer sealed end to form a bottom.
  • An apparatus for manufacturing thermoplastic packaging bags to be used for this method is disclosed, too.
  • This invention relates to a packaging method for perfectly sealing flowable materials including liquid etc. and an apparatus for manufacturing packaging bags to be used for said method.
  • a tubular film of a thermoplastic material is folded flat whereby both sides are folded inward as seen in FIG. I, the flat folded film is cut at a predetermined length, one end of the cut tubular film piece is heat-sealed, the sealed part is made flat to form a bottom, a flowable material such as liquid is introduced in the thus formed bag from the opposite opening end, that is, a top of the bag, and finally the opening end is heat-sealed.
  • This invention is to provide a method of perfect sealing of a package of flowable materials such as liquid (milk, fermented milk, fruit juice, oils, soup, etc.) and pasty materials (yogurt, for instance).
  • liquid milk, fermented milk, fruit juice, oils, soup, etc.
  • pasty materials dairy materials
  • the method of this invention comprises forming a folded packaging material by folding a flattened tubular film of a thermoplastic material so that the both sides thereof are folded inward; sealing said folded packaging material at the position which is to become the top after the packaging is finished; unfolding the opening spaced from the sealed portion by a predetermined distance so that the inwardly folded portions are turned outside and the opening comprises two layers; introducing a flowable material through this opening; sealing the opening in the two layer state; pressing flat the two layer sealed end so as to form a flat bottom.
  • a tubular film packaging material is sealed at the position which is to become the top of a finished package prior to introduction of a flowable material, and the opening which is to become the bottom of the finished package is unfolded so that the inwardly folded sides are turned outward, and a flowable material is introduced in the thus formed bag, and the opening is sealed in the two layer state.
  • FIG. 1 is a perspective view of a thermoplastic folded packaging material used in the method of this invention
  • FIG. 2 is a perspective view which shows the step of forming a packaging bag by sealing the material shown in FIG. 1;
  • FIG. 3 is a perspective view showing'the packaging bag which is inserted in a forming case and is being unfolded at its opening;
  • FIG. 4 is a perspective view showing the step in which air is blown in the packaging bag
  • FIG. 5 is a perspective view showing the step in which a flowable material is introduced in the packaging bag
  • FIG. 6 is a perspective view showing the step in which the opening of the packaging bag is sealed
  • FIG. 7 is a perspective view showing the step in which the sealed one end of the bag is pressed flat
  • FIG. 8 is a perspective view showing the step in which the triangular ears which have been formed in the preceding step are turned upward;
  • FIG. 9 is a perspective view showing the step in which the triangular ears are folded onto the flat bottom
  • FIG. 10 is a perspective view of the finished package containing the flowable material
  • FIG. 11 is a schematic elevational side view of an apparatus for manufacturing packaging bags of thermoplastic film used in the method of this invention.
  • FIGS. 12, 13, 14,15, 16 and 17 are cross sections along lines l2 12, 13-13, l4--l4, l515, l6l6 and l7l7 in FIG. 11, respectively.
  • a folded packaging material 1 is formed by foldinga tubular film of a thermoplastic material such as polyethylene so that both sides are turned inside to form folded portions A AND B.
  • the folded packaging material comprises two four-layer portions X which consists of outer films C and D and inwardly folded portions A or B and a two-layer portion Y which consists of two outer films C and D.
  • the thus formed folded packaging material 1 is sealed, for instance, by heat sealing by means of heat-press members 2 and 3 at the position which is to be the top of the finished package, and is cut off at the position immediately below the seal.
  • a packaging bag is obtained, in which a flowable material is to be contained.
  • the packaging bags can also be prepared by first cutting a continuous folded tubular film at the position which is to be the top of the finished package and then sealing the cutted end.
  • a hole for sucking the contents out and a sealing film to close said hole are shown at 4 and 5 respectively.
  • an air-blowing tube 13 is inserted into the opening as shown in FIG. 4, and at the same time a pair of press members l4 and hold the opening therebetween so that the opening remains inthe two layer state.
  • the press members Hand 15 are respectivelyprovided with a semicircular recesses .16 and 17 to receive the air blowing tube 13.
  • the bag expands so as to conform with the configuration of the case 6 since the opening thereof is closed by the press members 14 and 15;
  • the press members 14 and 15 are-withdrawn and the air-blowing tube is removed, and a supply tube 18 is inserted into the bag so that a predetermined amount of a flowable materialsuch as milk or fruit juice is introduced therein as shown in FIG. 5.
  • suitable methods other than aforementioned air,- blowing method can be used to expand the bag.
  • the supply tube 18 is removed and the opening is sealed, for instance, by apair of heat-press members 19 and20 as shown in FIG. 6.
  • the opening is kept in the two layer state, and therefore thesealing is effected in the two layer state, too. Therefore, when the heat-press members l9 and 20 are applied together to the opening, there is no fold held between the outer films, and'thus there is no stepped point. Therefore blow holes are not generated even if the inside of the opening is wetted with the flowable material. In this way a' very perfect scaling is effected in accordance with this invention.
  • thermoplastic materials for the folded packaging material of this invention include polyolefin such as polyethylene, polypropylene, etc., polyvinyl chloride and paper both surfaces of which are coated with polyethylene, etc.
  • the roof-shaped top of the package is sealedprior to introduction'of a flowable material. Therefore the sealing of the top can'be perfectly effected although there are inward folds on both sides held between the outer films, since there is no flowable material sticking to the inside of the opening. Also, the bottom of the package canbe perfectly sealed as mentioned above. I j
  • the package of this invention has a fiat bottom, it stably stands by itself, and therefore it is very conve nient for storage and transportation;
  • polyethylene for instance is shown at 34.
  • the tubular thereof reach the upper end 22 of the case 6, the wings 25 and 26 are turned inward by means of a pair of plungers 31 and 32 so as to bend the now upwardly extending triangular ears 23 and 24 inward as shown in FIG. 9.
  • the ears may be bonded to the flat bottom by spot heat sealing or area heat sealing, or by the aid of an adhesive.
  • the triangular ears can remain extending outward if it is not inconvenient in storage or transportation.
  • the guide body 37 is a long I-shape section body (Refer to FIGS. 13 to 16) the upper and lower ends 38 and 39 of which are gradually reduced in thickness and width. That is, the guide body has grooves on both sides and on the front (facing the film supply roller 34) surface at lower middle position a recess 40 is provided.
  • the flattened tubular film 33 drawn out of the supply roller 34 isled to clothe the guide body 37 therewith and is passed upward.
  • the guide body is held by a pair of rollers 41 and 42 on the front and back at the lower position, by a pair of rollers 43 and44 on both sides at the middle position, and by a pair of rollers 45 and 46 at the upper position.
  • the rollers support the clothing film pressing it toward the guide body.
  • a cutting edge 47 which is intermittenly protruded so as to give a cut in the passing tubular film. This cut becomes a sucking hole 4 in the finished package.
  • a supply roller 48 for a sealing film (aluminium foil laminated with a polyethylene film on the back side, for instance) is provided above the cutting edge 47.
  • roller 49 By means of roller 49, the sealing film 5 is drawn out by the length necessary to seal the sucking hole of the tubular film 33, and sealed thereupon when the hole comes to a predetermined position-For this purpose a heat-press member 50 is provided at the position, and the sealing film is pressed upon the cut hole of the tubular film and is cut off by means of a cutting knife 51 at a suitable position.
  • a pair of guide plates 54 and 55 are provided, which fold inward the side'surfaces of the up-traveling tubular film into the grooves 52 and 53 provided on both sides of the guide body 37. Thereafter the tubular film 33 leaves the guide body 37 and is pressed flat by means of a pair of rollers 56 and 57, and thus the tubular film is formed into a flat folded tubular film 1 having inwardly folded portions as shown in H6. 1.
  • the thus formed folded tubular film is heat-sealed by means of a pair of heat press members 2 and 3 which intermittently nip the tubular film.
  • the sealed tubular film is then sent to a cutter 60 by means of a pair of rollers 58 and 59 and is snipped off at the position immediately below the seal by means of a cutter 60 which is intermittently operated.
  • member 62 is a supporting roller provided against the heat-press 50.
  • a method for packaging a flowable material comprising forming a folded tubular packaging material by folding a flattened tubular film of a thermoplastic material so that both sides thereof are folded inward; sealing said folded packaging material at the position which is to become the top after the packaging is finished; unfolding the opening spaced from the sealed portion by a predetermined distance so that the inwardly folded portions are turned outside and the opening comprises two layers; introducing said flowable material through this opening; sealing the opening in the two layer state; and pressing flat the two layer sealed end so as to form a flat bottom.
  • thermoplastic material is a polyolefin selected from the group consisting of polyethylene and polypropylene.
  • thermoplastic material is a polyvinyl chloride.
  • thermoplastic material is a paper both surfaces of which are coated with polyethylene film.
  • An apparatus for manufacturing packaging bags comprising: a roller for supply of continuous flattened tubular film of a thermoplastic material; a long guide body for guiding the tubular film, the upper and lower ends of which are gradually reduced in thickness and width toward the tips, and which is provided with a groove on both sides and a recess at a position in the front face; supporting rollers which sustain the guide body in an upright position; a cutting edge which moves forward into the recess of the guide body at a predetermined cycle; a heat press member provided at a position spaced from the cutting edge by a predetermined distance and moving forward to the guide body at the prcdetennined cycle; a means for supplying a film for sealing between the heat press member and the guide body; a pair of guide plates which are provided on both sides of the guide body toward the upper end thereof and which turn inward the sides of the tubular film into the grooves provided in the sides of the guide body; a pair of pressing rollers which press flat the tubular film which has been provided with the inward side folds
  • a method for packaging a flowable material comprising forming a folded tubular packaging material by folding a flattened tubular film of a thermoplastic material so that both sides thereof are folded inwardly, sealing said folded packaging material at a position which is to become the top of the package after the packaging is finished to form a packaging bag, inserting the packaging bag in a forming case with the top of the packaging bag being in the bottom of the forming case, unfolding the opening, which is spaced apart from the sealed portion and which is to become the bottom of the packaging bag, by turning the inwardly folded portions outwardly, thereby forming two opposing layers, blowing air into the packaging bag, introducing a flowable material into the packaging bag, sealing the opening in the two layer state, pressing flat the two layer sealed end so as to form a flat bottom with triangular ears extending therefrom past the sides of the packaging bag, turning said triangular ears upwardly in alignment with said sides of the packaging bag and folding said triangular ears inwardly into the flat bottom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)
US00288356A 1971-09-12 1972-09-12 Method for packaging flowable materials and apparatus for manufacturing packaging bags Expired - Lifetime US3812644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7060771A JPS5429943B2 (ru) 1971-09-12 1971-09-12

Publications (1)

Publication Number Publication Date
US3812644A true US3812644A (en) 1974-05-28

Family

ID=13436424

Family Applications (1)

Application Number Title Priority Date Filing Date
US00288356A Expired - Lifetime US3812644A (en) 1971-09-12 1972-09-12 Method for packaging flowable materials and apparatus for manufacturing packaging bags

Country Status (6)

Country Link
US (1) US3812644A (ru)
JP (1) JPS5429943B2 (ru)
AU (1) AU469935B2 (ru)
CH (1) CH553090A (ru)
FR (1) FR2152261A5 (ru)
NL (1) NL150392B (ru)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924383A (en) * 1974-06-05 1975-12-09 Donald A Heger Method for making a plastic bag
US3948019A (en) * 1973-01-15 1976-04-06 Siegrheinische Registrierwaagenfabrik "Fix" Peter Steimel Kg Apparatus for the fully automatic production of filled, gusseted bags of plastic
EP0155984A2 (en) * 1984-03-30 1985-10-02 Toppan Printing Co., Ltd. Automatic packaging system
US4776147A (en) * 1986-12-17 1988-10-11 International Paper Company High capacity continuous package seam and tab folding and tacking apparatus
US4817366A (en) 1986-12-17 1989-04-04 International Paper Company High capacity package seal, sever, and brick apparatus and method
US4870804A (en) * 1988-11-22 1989-10-03 Milliken Research Corporation Method of forming a parallelepiped container made of machine-glazed paper to be filled with liquid
US4908009A (en) * 1988-11-22 1990-03-13 Milliken Research Corporation Corner-forming unit of a carton container-forming machine
US5618254A (en) * 1995-04-27 1997-04-08 Super Sack Mfg. Corp. Gusseted bulk bag liner and method of manufacture
US20030095696A1 (en) * 2001-09-14 2003-05-22 Reeves Anthony P. System, method and apparatus for small pulmonary nodule computer aided diagnosis from computed tomography scans
US6643997B1 (en) * 1999-02-04 2003-11-11 Chronos Holdings Ltd. Method and device for adapting the volume of collar bag and collar bag thus used
US20050276521A1 (en) * 2004-05-27 2005-12-15 Price Charles E Packaging for particulate and granular materials
US20060185328A1 (en) * 2003-02-25 2006-08-24 Sandro Salicini Method and device for wrapping groups of stacked products in the manufacture of sealed packs
US20060288668A1 (en) * 2005-06-28 2006-12-28 Sumco Corporation Container packaging apparatus
US7335149B1 (en) * 2006-07-03 2008-02-26 Violet Hanson Square bottom sealable bag forming machine
US20090211205A1 (en) * 2005-12-23 2009-08-27 Per Lachenmaier Hood Packaging Installation With Device for Producing Side Folds
US20090232424A1 (en) * 2008-03-11 2009-09-17 Patrick Joseph Bierschenk Method and apparatus for making a flat bottom pillow pouch
US20110019942A1 (en) * 2009-07-22 2011-01-27 Carmelo Piraneo Flat Bottom, Stand-Up Bag and Method of Manufacturing Same
US20120096815A1 (en) * 2010-10-26 2012-04-26 Haver & Boecker Ohg Method and device for filling a bag
US20180297725A1 (en) * 2017-03-24 2018-10-18 The Procter & Gamble Company Methods of opening flexible containers
US11111036B2 (en) 2017-02-22 2021-09-07 The Procter & Gamble Company Methods of making flexible containers with structural support frames
US11338975B2 (en) 2018-05-16 2022-05-24 The Procter & Gamble Company Container blanks for flexible packages and methods of making flexible packages
US11548255B2 (en) 2017-02-21 2023-01-10 The Procter & Gamble Company Methods of making vented flexible containers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5654982Y2 (ru) * 1976-07-05 1981-12-22
DE3011302C2 (de) * 1980-03-24 1982-06-16 Papier-und Kunststoff-Werke Linnich GmbH, 4000 Düsseldorf Verfahren zur Herstellung einer Flüssigkeitspackung
JP5089720B2 (ja) * 2010-03-19 2012-12-05 アサヒ飲料株式会社 水処理装置
CN111071503A (zh) * 2019-12-24 2020-04-28 浙江瑞涛包装制品有限公司 一种包装机械

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148489A (en) * 1959-11-19 1964-09-15 British Xylonite Co Ltd Method of producing a filled package
US3280532A (en) * 1962-06-05 1966-10-25 E P Remy Et Cie Soc Method of closing and forming pliable containers filled with a liquid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148489A (en) * 1959-11-19 1964-09-15 British Xylonite Co Ltd Method of producing a filled package
US3280532A (en) * 1962-06-05 1966-10-25 E P Remy Et Cie Soc Method of closing and forming pliable containers filled with a liquid

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948019A (en) * 1973-01-15 1976-04-06 Siegrheinische Registrierwaagenfabrik "Fix" Peter Steimel Kg Apparatus for the fully automatic production of filled, gusseted bags of plastic
US3924383A (en) * 1974-06-05 1975-12-09 Donald A Heger Method for making a plastic bag
EP0155984A2 (en) * 1984-03-30 1985-10-02 Toppan Printing Co., Ltd. Automatic packaging system
EP0155984A3 (en) * 1984-03-30 1987-04-29 Toppan Printing Co., Ltd. Automatic packaging system
US4881360A (en) 1986-12-17 1989-11-21 International Paper Company High capacity package seal, sever, and brick apparatus and method
US4776147A (en) * 1986-12-17 1988-10-11 International Paper Company High capacity continuous package seam and tab folding and tacking apparatus
US4817366A (en) 1986-12-17 1989-04-04 International Paper Company High capacity package seal, sever, and brick apparatus and method
US4908009A (en) * 1988-11-22 1990-03-13 Milliken Research Corporation Corner-forming unit of a carton container-forming machine
US4870804A (en) * 1988-11-22 1989-10-03 Milliken Research Corporation Method of forming a parallelepiped container made of machine-glazed paper to be filled with liquid
US5618254A (en) * 1995-04-27 1997-04-08 Super Sack Mfg. Corp. Gusseted bulk bag liner and method of manufacture
US5759144A (en) * 1995-04-27 1998-06-02 Super Sack Mfg. Corp. Gusseted bulk bag liner and method of manufacture
US5984850A (en) * 1995-04-27 1999-11-16 Super Sack Mfg. Corp. Gusseted bulk bag liner and method of manufacture
US6643997B1 (en) * 1999-02-04 2003-11-11 Chronos Holdings Ltd. Method and device for adapting the volume of collar bag and collar bag thus used
US20030095696A1 (en) * 2001-09-14 2003-05-22 Reeves Anthony P. System, method and apparatus for small pulmonary nodule computer aided diagnosis from computed tomography scans
US20060185328A1 (en) * 2003-02-25 2006-08-24 Sandro Salicini Method and device for wrapping groups of stacked products in the manufacture of sealed packs
US7257936B2 (en) * 2003-02-25 2007-08-21 Azionaria Costruzioni Macchine Automatiche A.C.M.A. S.P.A. Method and device for wrapping groups of stacked products in the manufacture of sealed packs
US20050276521A1 (en) * 2004-05-27 2005-12-15 Price Charles E Packaging for particulate and granular materials
US7716901B2 (en) * 2004-05-27 2010-05-18 Price Charles E Packaging for particulate and granular materials
US7290382B2 (en) * 2005-06-28 2007-11-06 Sumco Corporation Container packaging apparatus
US20060288668A1 (en) * 2005-06-28 2006-12-28 Sumco Corporation Container packaging apparatus
US20090211205A1 (en) * 2005-12-23 2009-08-27 Per Lachenmaier Hood Packaging Installation With Device for Producing Side Folds
US7975456B2 (en) * 2005-12-23 2011-07-12 Illinois Tool Works Inc. Hood packaging installation with device for producing side folds
US7335149B1 (en) * 2006-07-03 2008-02-26 Violet Hanson Square bottom sealable bag forming machine
US20090232424A1 (en) * 2008-03-11 2009-09-17 Patrick Joseph Bierschenk Method and apparatus for making a flat bottom pillow pouch
US10287075B2 (en) * 2008-03-11 2019-05-14 Frito-Lay North America, Inc. Apparatus for making a flat bottom pillow pouch
US20160159543A1 (en) * 2008-03-11 2016-06-09 Frito-Lay North America, Inc. Method and Apparatus for Making A Flat Bottom Pillow Pouch
US9296171B2 (en) * 2008-03-11 2016-03-29 Frito-Lay North America, Inc. Method for making a flat bottom pillow pouch
US8790230B2 (en) * 2009-07-22 2014-07-29 Anapo Plastics, Llc Method of manufacturing a stand-up bag
US20110019943A1 (en) * 2009-07-22 2011-01-27 Carmelo Piraneo Flat bottom, stand-up bag and method of manufacturing same
US20110019942A1 (en) * 2009-07-22 2011-01-27 Carmelo Piraneo Flat Bottom, Stand-Up Bag and Method of Manufacturing Same
US9150315B2 (en) * 2010-10-26 2015-10-06 Haver & Boecker Ohg Method and device for filling a bag
US20120096815A1 (en) * 2010-10-26 2012-04-26 Haver & Boecker Ohg Method and device for filling a bag
US11548255B2 (en) 2017-02-21 2023-01-10 The Procter & Gamble Company Methods of making vented flexible containers
US11111036B2 (en) 2017-02-22 2021-09-07 The Procter & Gamble Company Methods of making flexible containers with structural support frames
US20180297725A1 (en) * 2017-03-24 2018-10-18 The Procter & Gamble Company Methods of opening flexible containers
US11338975B2 (en) 2018-05-16 2022-05-24 The Procter & Gamble Company Container blanks for flexible packages and methods of making flexible packages

Also Published As

Publication number Publication date
DE2244743A1 (de) 1973-04-12
AU469935B2 (en) 1976-02-26
DE2244743B2 (de) 1977-07-07
JPS5429943B2 (ru) 1979-09-27
FR2152261A5 (ru) 1973-04-20
AU4627172A (en) 1974-03-14
CH553090A (de) 1974-08-30
JPS4837273A (ru) 1973-06-01
NL150392B (nl) 1976-08-16
NL7212208A (ru) 1973-03-14

Similar Documents

Publication Publication Date Title
US3812644A (en) Method for packaging flowable materials and apparatus for manufacturing packaging bags
US3942708A (en) Liquid and air tight package
US6231237B1 (en) Container having rectangular base and its manufacturing
US3534520A (en) Thermoplastic bag and process of forming,filling and closing the same
JP5005736B2 (ja) 嵌着品を有するガセット式フレキシブル・ボトルとその製造方法
US3505779A (en) Filled flat bag and a method and device for producing the same
US3314210A (en) Process and a device for manufacturing packages
US3390507A (en) Method of forming a dual compartment container
EP0032257B1 (en) Method for the continuous manufacture of packing containers
US3373926A (en) Seamed container with easy opening feature
US3659777A (en) Reinforced package
US2401110A (en) Bag and method of making same
US6805261B1 (en) Flexible tube and method of manufacture
EP3344549B1 (en) Method of forming a bonded tube for use as a package gusset
US4151024A (en) Method for the manufacture of packing containers
US3511435A (en) Laminated container and method of making a laminated container
US3719318A (en) Thermoplastic bag
JP2005523853A (ja) 嵌着品を有するガセット式フレキシブル・ボトルとその製造方法
US9126383B2 (en) Bottom-gusseted package and method
US3877630A (en) Method and blank for forming a package within a wrapping
US3506516A (en) Method for improving end seams in containers with a fin-type back seam by double heat sealing
JP4213220B2 (ja) 多壁袋
US2383352A (en) Cheese package
US3834607A (en) Rigid paperboard container
US4189986A (en) Method and apparatus for heat sealing a package blank