US2987858A - Method of closing bag tube ends - Google Patents

Method of closing bag tube ends Download PDF

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Publication number
US2987858A
US2987858A US810072A US81007259A US2987858A US 2987858 A US2987858 A US 2987858A US 810072 A US810072 A US 810072A US 81007259 A US81007259 A US 81007259A US 2987858 A US2987858 A US 2987858A
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US
United States
Prior art keywords
bag
tape
heat
over
lip
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
US810072A
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English (en)
Inventor
William C Kerker
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.)
Union Bag and Paper Corp
Original Assignee
Union Bag and Paper 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 Union Bag and Paper Corp filed Critical Union Bag and Paper Corp
Priority to US810072A priority Critical patent/US2987858A/en
Priority to FR40384A priority patent/FR1255292A/fr
Priority to BE590151A priority patent/BE590151A/fr
Application granted granted Critical
Publication of US2987858A publication Critical patent/US2987858A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • 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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/20—Reducing volume of filled material
    • B65B1/24—Reducing volume of filled material by mechanical compression
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/06—Applying adhesive tape
    • B65B51/065—Applying adhesive tape to the necks of bags
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
    • B65B7/06—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap
    • B65B7/08—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap and folding

Definitions

  • the invention relates to improvements in methods of closing and sealing the ends of bag tubes. More particularly it pertains to the heat sealing and closing of multiwall paper bags to form a liquid and air-tight closure. This method is particularly well suited to close the bag disclosed in the pending application of Thomas M. Mc- Curry, Serial No. 810,079, filed April 30, 1959.
  • the invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others thereof, which will be exemplified in the method hereinafter disclosed, and the scope of the invention will be indicated in the claims.
  • FIGURE 1 is a schematic view showing successive steps in the method of the present invention.
  • FIGURE 2 is a sectional view taken along the line 22 of FIGURE 1;
  • FIGURE 3 is a sectional view taken along the line 33 of FIGURE 1;
  • FIGURE 4 is a sectional view taken along the line 44 of FIGURE 1;
  • FIGURE 5 is a sectional view taken along the line 55 of FIGURE 1;
  • FIGURE 6 is a sectional view similar to FIGURE 5 showing the lip of the bag folded against the face.
  • FIGURES 7 to 12, inclusive illustrate stages in the formation of the closure by means of the method of the present invention.
  • FIGURE 1 a multiwall paper bag 20 having a heat sealable inner ply.
  • the bag illustrated shows the top end stepped so that the outer ply or plies 20a of the long face of the bag extend beyond the inner ply 20b which in turn extends beyond the outer ply or plies 200 of the short face.
  • the advantages of such construction are fully set forth in the copending application referred to above.
  • FIGURE 7 pressure is applied to the faces over an area above the filled material. This can be done by pressure plates 21, as shown in FIGURES 1 and 2, which plates are adapted to be moved together or apart.
  • the application of pressure to the bag faces of the filled bag serves to squeeze a certain amount of air out of the bag and to bring the faces into superimposed position for the heat sealing step.
  • FIGURE 8 illustrates the bag after completion of this step.
  • a jaw 23b is moveable and cooperates with a jaw 23a for Patented June 13, 1961 the application of heat and pressure to the upper lip of the bag.
  • the jaw 23b contains a heating element 24 which supplies a line of heat to the bag through the bar 25a afiixed to the jaw.
  • the jaw 23a has a groove 25b which mates with the bar 25a during the heat sealing operation.
  • Below the heat sealing jaws and insulated therefrom is another pair of jaws 26a and 26b.
  • the jaw 26b is moveab-le and has a scoring bar 260 which mates with the groove 26d in the jaw 26a and scores the bag below the heat sealline.
  • the heat seal is made along a line 27 running across the top edge of the heat sealable inner ply while the score line 28 is made across the heat sealable inner ply just above the top edge of the short face of. the outer ply (FIGURE 9).
  • This score l-ine facilitates the folding of the lip as hereinafter described. It will be understood that the heat seal line and the score line can be positioned to suit the particular needs of the bag to which this method is being applied.
  • the bag Upon completion of the heat sealing of the inner ply the bag is passed over a blade which turns the extended lip over along the score line 28 so that it is substantially at right angles to the faces of the bag. While in such angular position the extended lip is fed between the tape roll 29 and the paste roll 30a.
  • the tape roll applies a strip of tape 31 to the extended lipof the bag. Such tape is cut off by the knives 32 and is of sufiicient length and width to project beyond the lip on,the three edges.
  • the pan 33 contains water which is fed by rolls 34a and 34b to the tape. If ungummed tape is employed the pan 33 is filled with paste similarly fed to the tape.
  • the paste roll 30 picks up paste from the roll 30b running through the paste in pan 35 and applies it in a band to the edge of the extended outer ply.
  • FIGURE 10 shows the bag at this stage.
  • the bag is now mode so that the extended lip is positioned under a folding plate 36, shown in FIGURES 1 and 5, which plate is actuated to fold over the extended lip along the score line 28 against the short face of the bag (FIGURE 6).
  • the paste on the extended edge of the outer ply will hold the extended lip in folded position whereas the pasted tape will reinforce the closure and cover the edge of the lip, t-hus insuring a neat and tight closure.
  • the pasted turned down lip will provide a sufiicient and effective closure without the use of the tape and this step may be omitted.
  • the ends of the tape are preferably turned over the side edges of the bag and secured to the opposite face, as shown in FIGURE 12. If the bottom of the bag has been closed in a similar manner, it will be apparent that both ends of the bag will have the same neat, attractive appearance (FIGURES 11 and 12).
  • a suitable horizontal conveyor may be employed to move the bag through the various stages illustrated in FIGURE 1.
  • this particular method has been described in conjunction with a particular type of bag, it will be evident that the method can also be used in providing a similar closure for other types of multiwall paper bags having a heat sealable inner ply.
  • the method of closing and sealing the open end of a filled multiwall bag having a stepped end with an exposed heat sealable inner ply of the type described which comprises the steps of applying pressure to the bag faces over an area above the filled material to evacuate air and align the faces, heat sealing the exposed inner ply to close the bag, folding over the end of the bag along a line below the heat seal band, adhesively securing a tape over the edge of the folded portion and securing such folded over portion and tape to the face of the bag.
  • the method of closing and sealing the open end of a filled multiwall bag having a stepped end with an exposed heat sealable inner ply of the type described which comprises the following steps while the bag is in an upright position: applying pressure to the bag faces over an area above the filled material to evacuate air and align the faces, heat sealing the exposed inner ply to close the bag, partially folding over the end of the bag along a line below the heat seal band to a plane angularly disposed to the faces of the bag, adhesively applying a tape along the outer side of the folded over portion while in such angularly disposed position with the tape extended over the lateral edge of such portion, applying adhesive to the inner side of such portion, completing the folding over and adhesively securing such portion and tape against the face of the bag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
US810072A 1959-04-30 1959-04-30 Method of closing bag tube ends Expired - Lifetime US2987858A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US810072A US2987858A (en) 1959-04-30 1959-04-30 Method of closing bag tube ends
FR40384A FR1255292A (fr) 1959-04-30 1960-04-25 Méthode de fermeture de l'extrémité de sacs tubulaires
BE590151A BE590151A (fr) 1959-04-30 1960-04-26 Méthode de fermeture d'extrémités de sacs tubulaires.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US810072A US2987858A (en) 1959-04-30 1959-04-30 Method of closing bag tube ends

Publications (1)

Publication Number Publication Date
US2987858A true US2987858A (en) 1961-06-13

Family

ID=25202924

Family Applications (1)

Application Number Title Priority Date Filing Date
US810072A Expired - Lifetime US2987858A (en) 1959-04-30 1959-04-30 Method of closing bag tube ends

Country Status (3)

Country Link
US (1) US2987858A (fr)
BE (1) BE590151A (fr)
FR (1) FR1255292A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124297A (en) * 1964-03-10 vergobbi
US3439470A (en) * 1964-02-04 1969-04-22 Windmoeller & Hoelscher Machine for closing bags
US4490960A (en) * 1980-07-25 1985-01-01 Doboy Packaging Machinery, Inc. Apparatus and method for closing reclosable bags
US4722166A (en) * 1980-03-13 1988-02-02 Dieckow Klaus Peter Packaging
US5493842A (en) * 1993-07-13 1996-02-27 Concetti S.P.A. Apparatus for the formation and application of a sealing flap to seal the mouth of a filled sack, starting from a continuous strip of heat-sealable material
US6347499B1 (en) * 1999-02-17 2002-02-19 Mcgregor James Bag sealing mechanism
US20100154362A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Method and Apparatus for Bag Closure and Sealing
US20100158418A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Heat activated adhesives for bag closures
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2015199A (en) * 1933-06-05 1935-09-24 Lucien D Sparks Tobacco container
US2356472A (en) * 1941-02-04 1944-08-22 Rothaug Clarence Wells Container sealing machine
US2404337A (en) * 1944-04-13 1946-07-16 Bemis Bro Bag Co Bag closure means and method
US2409621A (en) * 1942-07-27 1946-10-22 Bemis Bro Bag Co Method of closing bag tube ends
US2571103A (en) * 1948-10-29 1951-10-16 Bemis Bro Bag Co Bag sealing machine
US2729928A (en) * 1953-01-15 1956-01-10 Battle Creek Packaging Machine Machine for folding and closing liner bags in cartons

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2015199A (en) * 1933-06-05 1935-09-24 Lucien D Sparks Tobacco container
US2356472A (en) * 1941-02-04 1944-08-22 Rothaug Clarence Wells Container sealing machine
US2409621A (en) * 1942-07-27 1946-10-22 Bemis Bro Bag Co Method of closing bag tube ends
US2404337A (en) * 1944-04-13 1946-07-16 Bemis Bro Bag Co Bag closure means and method
US2571103A (en) * 1948-10-29 1951-10-16 Bemis Bro Bag Co Bag sealing machine
US2729928A (en) * 1953-01-15 1956-01-10 Battle Creek Packaging Machine Machine for folding and closing liner bags in cartons

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124297A (en) * 1964-03-10 vergobbi
US3439470A (en) * 1964-02-04 1969-04-22 Windmoeller & Hoelscher Machine for closing bags
US4722166A (en) * 1980-03-13 1988-02-02 Dieckow Klaus Peter Packaging
US4490960A (en) * 1980-07-25 1985-01-01 Doboy Packaging Machinery, Inc. Apparatus and method for closing reclosable bags
US5493842A (en) * 1993-07-13 1996-02-27 Concetti S.P.A. Apparatus for the formation and application of a sealing flap to seal the mouth of a filled sack, starting from a continuous strip of heat-sealable material
US6347499B1 (en) * 1999-02-17 2002-02-19 Mcgregor James Bag sealing mechanism
US20100189380A1 (en) * 2008-12-22 2010-07-29 Gary Sargin Heat Activated Adhesives for Bag Closures
US20100158418A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Heat activated adhesives for bag closures
US20100154362A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Method and Apparatus for Bag Closure and Sealing
US20100192520A1 (en) * 2008-12-22 2010-08-05 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
US8241193B2 (en) 2008-12-22 2012-08-14 Coating Excellence International Llc Method and apparatus for bag closure and sealing
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
US8443578B2 (en) 2008-12-22 2013-05-21 Coating Excellence International Llc Apparatus for bag closure and sealing using heated air
US8475046B2 (en) 2008-12-22 2013-07-02 Coating Excellence International Llc Heat activated adhesives for bag closures
US9233502B2 (en) 2008-12-22 2016-01-12 Coating Excellence International Llc Method and apparatus for bag closure and sealing
US20100293897A1 (en) * 2009-05-21 2010-11-25 Jansen Mark E Heat Activated Adhesives for Bag Closures
WO2011016965A1 (fr) * 2009-08-04 2011-02-10 Coating Excellence International Llc Procédé et appareil pour fermeture et scellement étanche de sac

Also Published As

Publication number Publication date
BE590151A (fr) 1960-08-16
FR1255292A (fr) 1961-03-03

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