US3479930A - Automatic stretch bag machine - Google Patents

Automatic stretch bag machine Download PDF

Info

Publication number
US3479930A
US3479930A US665364A US3479930DA US3479930A US 3479930 A US3479930 A US 3479930A US 665364 A US665364 A US 665364A US 3479930D A US3479930D A US 3479930DA US 3479930 A US3479930 A US 3479930A
Authority
US
United States
Prior art keywords
bag
forming bars
film
machine
forming
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
US665364A
Other languages
English (en)
Inventor
William S Peppler
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.)
Smurfit Diamond Packaging Corp
Original Assignee
Diamond International 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 Diamond International Corp filed Critical Diamond International Corp
Application granted granted Critical
Publication of US3479930A publication Critical patent/US3479930A/en
Assigned to SMURFIT DIAMOND PACKAGING CORPORATION, A DE CORP. reassignment SMURFIT DIAMOND PACKAGING CORPORATION, A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DIAMOND INTERNATONAL CORPORATION A DE CORP., MOHAWK CONTAINERS, INC., A NY CORP
Assigned to CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO, A NATIONAL BANKING ASSOCIATION reassignment CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO, A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMURFIT DIAMOND PACKAGING CORPORATION, A DE CORP.
Assigned to SMURFIT DIAMOND PACKAGING CORPORATION reassignment SMURFIT DIAMOND PACKAGING CORPORATION RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/005—Making flexible containers, e.g. envelopes or bags involving a particular layout of the machinery or relative arrangement of its subunits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/28—Folding sheets, blanks or webs around mandrels
    • B31B70/30—Moving mandrels

Definitions

  • the present invention relates to bagging machines and has particular reference to an improved bag expanding machine which forms and stretches the bag prior to product insertion.
  • the conventional method of bagging products makes use of pre-made bags.
  • the individual bags are difficult to handle reliably in automatic bagging machines.
  • bags of stretchable film are manually placed on bag expanding means which stretch the bag prior to product insertion.
  • This type of packing is now commonly used, for example, in poultry packaging.
  • the method of forming and filling bags is automatically accomplished with the present apparatus which keeps positive control of each bag by forming it over a forming or spreading means that carries it to the product insert position while opening the bag for loading.
  • the present invention is directed to a method and apparatus for forming a bag from a plastic film which may be supplied in roll form and then automatically expanding this bag while moving it to a position at which a product is inserted therein.
  • FIGS. 1 and 2 are perspective views of one embodiment of a portion of the machine of the present invention during steps in its operation;
  • FIG. 3 is a partial left side elevational view of a portion of FIG. 1;
  • FIGS. 4 and 5 are another embodiment of a portion of the machine of the present invention during steps in its operation
  • FIG. 6 is a partial top plan view of the portion of the machine in FIG. 5;
  • FIGS. 7 and 8 are schematic diagrams of front and side views respectively of linkages and gearing for coordinating the movements of the portions of the machine shown in FIGS. 1-6;
  • FIG. 9 is a detailed illustration of the Geneva drive viewed along line 9-9 in FIG. 8.
  • this type of machine is of great help in the handling of clinging type plastic films which are normally used in stretch bag packaging.
  • plastic films because of their clinging quality, can be very troublesome to handle and may not be handled as simply as materials having some rigidity which may be handled by other machines now in use.
  • a plurality of pairs of arms 11 and 11' are mounted for rotation on shaft 12.
  • forming bars 15 and 15' are located on the outer ends of each of arms 11 and 11 there are located forming bars 15 and 15' respectively, in opposed relationship to each other.
  • Each of forming bars 15 and 15 are pivotally mounted on arms 11 and 11' respectively and comprise jaw elements 16 which are so positioned as to have the jaw elements 16 of each of forming bars 15 and 15 open with these jaws on the forming bars facing each other.
  • the forming bars 15 and 15 in the form of cantilevered carriers are pivotally mounted on arms 11 and 11 respectively at right angles to those arms.
  • forming bars 15 and 15 are angled away from respective arms 11 and 11. This angling of the forming bars eliminates the use of picker arm 18 which is used in the embodiment shown in FIGS. 1-3 but not needed in the other embodiment shown in FIGS. 4-6.
  • a plastic film 20 which may be of a clinging type of film, is supplied from a film supply 21 shown in roll form. This film may be either a single, a single folded, or a double roll of film. If film 20 is in the form of a roll of single film, then it is folded as illustrated in the figures and passes between sealing and cutting jaws 22 where the edge 23 is sealed to form an envelope.
  • picker arm 18 hooks onto an edge of film 20 and pulls this edge back so as to clear the path of entry of forming bars 15 and 15' as shown at position A in FIG. 1. In this position the jaws 16 of forming bars 15, 15 are in a closed or almost closed position.
  • Forming bars 15 and 15 continue their circular clockwise rotation until forming bar 15 encounters edge 23 which has been sealed.
  • the forming bars 15, 15' then continue past sealing and cutting jaws 22 at the same time advancing film 20 along with the jaw elements 16.
  • these jaws are clamped together to cut the film and seal another edge so that bars 15, 15 continue with a bag 25 which has just been formed to position B shown in FIG. 2.
  • the picker arm 18 returns to the position shown in FIG. 2 so that the film 20 is positioned in this manner for the sealing and cutting jaws 22 which have been activated so as to form the trailing edge seal of bag 25 and at the same time form the leading edge seal on film 20 for the next bag which will be formed.
  • FIGS. 4-6 the procedure is somewhat similar to that shown in the previous figures.
  • the need for picker arm 18 is eliminated since due to the angle, forming bars 15 and 15' may enter the folds of film 20 without the necessity of pulling one side of that film out of position.
  • FIGS. 4-6 have illustrated a variation in the positioning of film supply 21 with the roll now in the horizontal position which necessitates a rotation of all positions illustrated in FIGS. l3 of approximately 90. Therefore, the final loading position is in a different location from that illustrated in FIG. 2 but the loading in this position would still consist of horizontal loading of the products to be inserted.
  • the sequence of operation of the forming bars 15, 15' in relation to film 20 and sealing and cutting jaws 22 is the same as previously described.
  • FIGS. 7-8 are merely schematic drawings and do not show construction details of the machine such as stabilizing linkages that would be required to limit the motion of cam rollers to an oscillating radial movement.
  • Shaft 12 upon which are mounted arms 11 and 11 for rotation therewith passes through an opening in stationary cam 34 without any connection thereto.
  • gear 35 mounted on shaft 12 for rotation therewith is gear 35.
  • Gear 36 is meshed with gear as illustrated in FIG. 9 and has lever 37 which rotates therewith.
  • Projection 38 on the opposite end of lever 37 from its attachment with gear 36 and shaft 40, moves through an are shown in dashed line to pass into grooves 41 of gear 35.
  • Gears 35 and 36 with lever 37 and projection 38 form a Geneva drive allowing intermittent motion of shaft 40 which rotates once per bag cycle.
  • cams mounted on shaft 40 are cams which are a cut and seal cam 41 and a picker arm cam 42 which operate through suitable linkage and cam follower arrangement (not shown).
  • the picker arm cam will operate picker arm 18 in the embodiment of the machine shown in FIS. 1-3.
  • the apparatus described heremg can automatically handle the forming and filling of plastic bags which may be of a clinging type of plastic usually difiicult to handle, with a minimum of difiiculty and transfer of the plastic film.
  • a machine for forming and opening bags made of plastic film comprising a shaft, at least one pair of forming bars mounted for rotation about said shaft, sealing and cutting means connected to operate in conjunction with the rotation of said forming bars, supply means to feed the plastic film to said sealing and cutting means in a double layer of the film, said forming bars positioned to enter between the double layer of plastic film at a position adjacent to said sealing and cutting means, said sealing and cutting means operating to cut and seal the plastic film after passage of a pair of said forming bars in the plastic film past said sealing and cutting means.
  • the machine of claim 1 further characterized by a picker means to grip and separate the double layer of plastic film to enable the movement of said forming bars therebetween.
  • the machine of claim 1 further characterized by arms extending from said shaft and mounted on said shaft for rotation therewith, said forming bars mounted on said extending arms so as to form an obtuse angle with said arms. 4.
  • said forming bars each including jaw member elements, said jaw member elements of a pair of said forming bars forming jaws opening in positions facing each other and operating in unison with each other. 5.
  • the machine of claim 4 further characterized by a gear mounted on each said jaw member element, said gears intermeshing to operate the jaw members elements on each forming bar in counter-rotating relationship to each other, a stationary cam mounted within the circle of rotation of said forming bars, cam follower means positioned to ride on said stationary cam, linkage connecting each of said cam follower means to at least one of said gears of one of said jaw member elements of each of said forming bars. 6.
  • the machine of claim 5 further characterized by said linkage connecting each of said cam follower means to at least one of said gears of both of a said pair of forming bars. 7.
  • the machine of claim 5 further characterized by a second shaft parallel to said first-mentioned shaft, cam means to operate said sealing and cutting means mounted for rotation on said second shaft, and intermittent motion gear means mounted on said shafts in operative relation to rotate said second shaft intermittently in relation to the rotation of said first-mentionted shaft.

Landscapes

  • Making Paper Articles (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
US665364A 1967-09-05 1967-09-05 Automatic stretch bag machine Expired - Lifetime US3479930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66536467A 1967-09-05 1967-09-05

Publications (1)

Publication Number Publication Date
US3479930A true US3479930A (en) 1969-11-25

Family

ID=24669829

Family Applications (1)

Application Number Title Priority Date Filing Date
US665364A Expired - Lifetime US3479930A (en) 1967-09-05 1967-09-05 Automatic stretch bag machine

Country Status (5)

Country Link
US (1) US3479930A (de)
JP (1) JPS4819747B1 (de)
DE (1) DE1778738C2 (de)
FR (1) FR1564285A (de)
GB (1) GB1222153A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4943786A (de) * 1972-06-29 1974-04-24
JPS4956791A (de) * 1972-06-29 1974-06-01
US3942416A (en) * 1974-03-08 1976-03-09 Mobil Oil Corporation Square bottomed bag folding apparatus
US4308020A (en) * 1978-04-27 1981-12-29 H. J. Langen & Sons Limited Mandrel of wrap-around carton forming machine to provide tight fit about enclosed item
US5511364A (en) * 1994-12-05 1996-04-30 Levi; Avraham Y. Apparatus for packing products in preformed bags
US5566530A (en) * 1990-08-09 1996-10-22 Johnstone; Peter Packaging system
US5845466A (en) * 1996-11-15 1998-12-08 Laudenberg; Bernd Multiple package machine
US20030024213A1 (en) * 2001-08-03 2003-02-06 Aetna Group S.P.A. Method and apparatus for wrapping groups of products with stretch film
US20030097817A1 (en) * 2001-11-27 2003-05-29 Aetna Group S.P.A. Method for making a package of products and apparatus implementing the method
US20050178084A1 (en) * 2003-03-27 2005-08-18 Arno Haloila Method and device for applying a plastic film around a product to be packaged
US20050235613A1 (en) * 2004-04-23 2005-10-27 Aetna Group, S.P.A. Machine for wrapping groups of products with tubular lenghts of stretch film

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754644A (en) * 1953-06-10 1956-07-17 Pneumatic Scale Corp Method of and apparatus for producing filled bags
US3379101A (en) * 1966-03-04 1968-04-23 Continental Can Co Method and apparatus for making bags
US3382644A (en) * 1963-12-30 1968-05-14 Clarence W. Vogt Apparatus for and method of continuously forming and filling bags

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT178854B (de) * 1948-11-19 1954-06-25 Leopold Rado Maschine zur Herstellung von mit Flüssigkeiten oder Pasten gefüllten Behältern
DE1093284B (de) * 1956-10-15 1960-11-17 Kjell Honne Maschine zur fortlaufenden Herstellung von Packungen aus einem Schlauch aus thermoplastischem Stoff od. dgl.
US3269278A (en) * 1962-04-16 1966-08-30 Crown Zellerbach Corp Multi-ply pouch manufacturing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754644A (en) * 1953-06-10 1956-07-17 Pneumatic Scale Corp Method of and apparatus for producing filled bags
US3382644A (en) * 1963-12-30 1968-05-14 Clarence W. Vogt Apparatus for and method of continuously forming and filling bags
US3379101A (en) * 1966-03-04 1968-04-23 Continental Can Co Method and apparatus for making bags

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4943786A (de) * 1972-06-29 1974-04-24
JPS4956791A (de) * 1972-06-29 1974-06-01
JPS5623846B2 (de) * 1972-06-29 1981-06-02
JPS5623845B2 (de) * 1972-06-29 1981-06-02
US3942416A (en) * 1974-03-08 1976-03-09 Mobil Oil Corporation Square bottomed bag folding apparatus
US4308020A (en) * 1978-04-27 1981-12-29 H. J. Langen & Sons Limited Mandrel of wrap-around carton forming machine to provide tight fit about enclosed item
US5566530A (en) * 1990-08-09 1996-10-22 Johnstone; Peter Packaging system
US5511364A (en) * 1994-12-05 1996-04-30 Levi; Avraham Y. Apparatus for packing products in preformed bags
US5845466A (en) * 1996-11-15 1998-12-08 Laudenberg; Bernd Multiple package machine
US20030024213A1 (en) * 2001-08-03 2003-02-06 Aetna Group S.P.A. Method and apparatus for wrapping groups of products with stretch film
US6751931B2 (en) * 2001-08-03 2004-06-22 Aetna Group, S.P.A. Method for wrapping groups of products with stretch film
US20030097817A1 (en) * 2001-11-27 2003-05-29 Aetna Group S.P.A. Method for making a package of products and apparatus implementing the method
US6826890B2 (en) * 2001-11-27 2004-12-07 Aetna Group, S.P.A. Method for making a package of products and apparatus implementing the method
US20050178084A1 (en) * 2003-03-27 2005-08-18 Arno Haloila Method and device for applying a plastic film around a product to be packaged
US20070175179A1 (en) * 2003-03-27 2007-08-02 Arno Haloila Method and device for applying a plastic film around a product to be packaged
US20050235613A1 (en) * 2004-04-23 2005-10-27 Aetna Group, S.P.A. Machine for wrapping groups of products with tubular lenghts of stretch film
US7191574B2 (en) * 2004-04-23 2007-03-20 Aetna Group, S.P.A. Machine for wrapping groups of products with tubular lengths of stretch film

Also Published As

Publication number Publication date
JPS4819747B1 (de) 1973-06-15
FR1564285A (de) 1969-04-18
DE1778738B1 (de) 1972-05-25
DE1778738C2 (de) 1973-01-04
GB1222153A (en) 1971-02-10

Similar Documents

Publication Publication Date Title
US3325977A (en) Packing machine
US2649674A (en) Packaging machine
US3948115A (en) Transmission system for a high speed cigarette packeting machine
US3479930A (en) Automatic stretch bag machine
US1986422A (en) Automatic packaging machine
US2649671A (en) Method of and machine for packaging material in an inert gaseous atmosphere
US3579952A (en) Packing machines
US3513629A (en) Overwrap packing machines
US3908340A (en) Apparatus for feeding and applying individual lids to containers
GB1203868A (en) Method and machine for forming and filling bags
US3022620A (en) Automatic machine for packing articles such as bags in thermoweldable pouches
US3001351A (en) Wrapping machines
US2691257A (en) Method of and apparatus for forming packages
GB1334242A (en) Packaging material into individual pouches
US3903672A (en) Method and machine for filled bag production
US4094125A (en) Packaging machine
US2969628A (en) Charge control mechanism in infusion package manufacture
US3656274A (en) Machine for producing and filling bags
US3533210A (en) Automatic stretch bag making method
US3465499A (en) Bag opening apparatus
US3250055A (en) Apparatus for making and filling packages in a continuous operation
US4730439A (en) Method and apparatus for packaging a product in individual vacuum sealed packets
US4086742A (en) Method and apparatus for fully automatically filling sacks or bags made during filling from a web of tubular plastics film
US2442431A (en) Sleeve inserting device for valve bags
US3330090A (en) Machine and method for packaging articles in envelope-type packages

Legal Events

Date Code Title Description
AS Assignment

Owner name: SMURFIT DIAMOND PACKAGING CORPORATION, A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:DIAMOND INTERNATONAL CORPORATION A DE CORP.;MOHAWK CONTAINERS, INC., A NY CORP;REEL/FRAME:004032/0637

Effective date: 19820913

Owner name: CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPA

Free format text: SECURITY INTEREST;ASSIGNOR:SMURFIT DIAMOND PACKAGING CORPORATION, A DE CORP.;REEL/FRAME:004032/0644

Effective date: 19820913

AS Assignment

Owner name: SMURFIT DIAMOND PACKAGING CORPORATION

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO;REEL/FRAME:004202/0722

Effective date: 19831216