US3813845A - Filling and sealing system - Google Patents

Filling and sealing system Download PDF

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Publication number
US3813845A
US3813845A US00265769A US26576972A US3813845A US 3813845 A US3813845 A US 3813845A US 00265769 A US00265769 A US 00265769A US 26576972 A US26576972 A US 26576972A US 3813845 A US3813845 A US 3813845A
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US
United States
Prior art keywords
pipe
tubing
compartments
filling
tube
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
US00265769A
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English (en)
Inventor
R Weikert
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.)
GENERAL FILMS Inc
GEN FILMS Inc
Original Assignee
GEN FILMS Inc
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 GEN FILMS Inc filed Critical GEN FILMS Inc
Priority to US00265769A priority Critical patent/US3813845A/en
Priority to CA171,545A priority patent/CA1005027A/en
Priority to IN1212/CAL/73A priority patent/IN139042B/en
Priority to NLAANVRAGE7307634,A priority patent/NL173728C/xx
Priority to IT50497/73A priority patent/IT985336B/it
Priority to DE2328998A priority patent/DE2328998A1/de
Priority to CH847473A priority patent/CH575313A5/xx
Priority to GB2889673A priority patent/GB1409846A/en
Priority to SE7308803A priority patent/SE411738B/xx
Priority to JP6926773A priority patent/JPS5634483B2/ja
Priority to DK349273A priority patent/DK153752C/da
Priority to FR7322958A priority patent/FR2189260B1/fr
Priority to US05/436,104 priority patent/US3941306A/en
Application granted granted Critical
Publication of US3813845A publication Critical patent/US3813845A/en
Priority to CA227,720A priority patent/CA1017291A/en
Priority to DK135379A priority patent/DK149714C/da
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
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/123—Feeding flat bags connected to form a series or chain

Definitions

  • the web is formed as a continuous tube having spaced, transverse seal lines extending from a lower edge of the web to a point short of the upper edge.
  • the bags are filled and sealed on a machine having an elongated filling pipe which is threaded into the tube between its upper edge and the upper ends of the transverse seal lines. After the bags are filled, a continuous, longitudinal, seal line is formed, intersecting the upper ends of the spaced seal lines to seal the filled bags. The tube is then severed intermediate its upper edge and the continuous longitudinal seal line to separate the filled, sealed bags from the filling pipe.
  • a web of flexible packaging material commonly a thermoplastic material
  • spaced, transverse sealing lines typically heat seal lines
  • the transverse seal lines extend from the bottom edge to a point short of the top edge to provide a pair of continuous free edges, apparently to permit the upper edges to be spread by a plow-like member to facilitate insertion of a filling nozzle into each of the compartments.
  • the product being packaged is a fluent one, such as, but not necessarily, a liquid
  • metering of the correct amount of the product into the packages will obviously present technical problems which must be resolved to create a successful system. Further, if a package is accidentally overfilled, it will be seen that spillage may result requiring termination of the packaging operation to permit cleaning the apparatus.
  • a web of bag blanks is formed from a continuous, closed tube of packaging material.
  • the tube is formed by extrusion and is thereafter flattened to provide upper and lower, longitudinally extending edges and transverse seal lines are formed in the flattened tube extending from the lower edge thereof to a point spaced from the upper edge to define a continuous channel running along the upper edge of the tube and interconnecting the compartments formed by the spaced, transverse seal lines.
  • the resulting web of bag blanks may, of course, be fed directly on an in-line process to the packaging machine of the present invention. However, it will usually be desirable to accumulate the web of bag blanks in some convenient form, such as a roll, which is subsequently used in the filling and sealing machine of the present invention.
  • Means is also provided for continuously feeding the tube from the supply thereof on the unwind stand along the filling pipe in a direction away from the discharge end of the pipe toward its inlet end.
  • This may include conveyors or feed rollers and preferably, a combination of both.
  • a pair of grooved feed rollers may be positioned adjacent the inlet end of the filling pipe forming a pressure nip therewith and gripping the tube adjacent its upper edge to draw the tube along the filling pipe.
  • a substantially horizontally oriented bottom conveyor may extend from adjacent the unwind stand to the inlet end of the filling pipe to support the lower edge of the tube during the filling process and to assist in conveying the tube as it moves through the machine in a downstream direction.
  • Side conveyor belts having opposed, substantially vertically extending reaches are preferably positioned-on opposite sides of the filling pipe to engage and support the side walls of the tube as it is filled and to also assist in conveying the tube through the filling and sealing machine.
  • the horizontal conveyor and the filling pipe may be inclined at a slight angle with respect to the horizontal, diverging upwardly with respect to the horizontal in a downstream direction.
  • the excess may spill over, back down into following compartments, thereby preventing spillage and also serving as an automatic metering system to insure that the correct amount of the filling material is deposited in each package.
  • metering plates will be positioned within the loops of the side conveyor belts in engagement with the aforementioned vertically extending reaches.
  • expansion of the packages may be controlled.
  • the compartments will be filled to a level determined by the upper ends of the transverse seal lines, interconnected as discussed below, with overflow passing back into following compartments.
  • the bags may expand, lowering the level of product deposited therein. Thereafter, a continuous longitudinally extending seal line is formed along the tube intersecting the upper ends of the transverse seal lines and sealing the product in individual bags holding the desired quantity.
  • a simple metering valve may be provided in the product supply line or conventional metering apparatus for measuring on a weight basis may be used.
  • the tube is severed longitudinally intermediate its upper edge and the longitudinally extending seal line to free the bags from 3 the filling pipe.
  • the filled, sealed bags may, of course, be retained in interconnected form if desired, but usually, it will be desirable to separate the filled bags from each other.
  • the transverse seal lines are preferably formed in closely spaced pairs connected at their upper ends in an inverted U configuration with a line of serrations extending between the legs of the U.
  • weighing apparatus may be associated with the machine adjacent the downstream end thereof for weighing each of the filled bags after they have separated from the web of bags.
  • the weighing station is connected to a servo-control mechanism which operates in response to weight information fed intoit to adjust automatically the spacing between the metering plates. Therefore, any variances in the weight of the filled bags from some preselected value or range of values will result in a compensating adjustment of the spacing'of the metering plates.
  • the filling pipe may in fact, include multiple pipes delivering multiple fluent materials at spaced locations along the filling line.
  • one of the multiple pipes may inject sterilizing gas into the compartments at a point adjacent the upstream end of the filling line to sterilize the interior of each of the compartments.
  • a food product such as milk, for example, is thereafter deposited into the compartments through a second of the multiple pipes, displacing the sterilizing gas in the compartment.
  • additives such as flavoring or coloring, may then be added through additional ones of the multiple pipes.
  • the multiple pipe filling pipe finds utility in packaging compounds that interract in atmosphere by permitting the filling of each of the compartments with an inert gas, such as nitrogen, and then injecting the chemical compounds into the inert gas filled compartment.
  • this embodiment of the invention may include the injecting of several products which'it is desired to mix into the compartments at the same point along the filling line.
  • the side conveyor belts in accordance with another embodiment of the invention, may be extended upwardly to lie on opposite sides of the tiller pipe, engaging the tube threaded over the pipe.
  • the belts are maintained in engagement with the tube by means of rollers bearing against the inside surfaces of the side conveyor belts. This not only provides additional support for the tube but eliminates the necessity of synchronizing the speeds of the side conveyor belts and supporting rollers.
  • FIG. I is a perspective view showing a filling and sealing system in accordance with the present invention.
  • FIG. 2 is a side elevational view, with portions removed, of the packaging system of the present invention
  • FIG. 3 is a view taken of line 3-3 of FIG. 2;
  • FIG. 4 is a view taken on line 4-4 of FIG. 2;
  • FIG. 5 is an enlarged fragmentary view of the upstream end of the filling nozzle
  • FIG. 6 is a view similar to FIG. 2 of the drawings, but showing a modification of the invention wherein a weighing station is utilized to control the spacing between the metering plates and the feed pipe is fed from multiple product sources;
  • FIG. 7 is a plan view of the modification of FIG. 6;
  • FIG. 8 is a side view, with parts in section, showing an embodiment wherein the filling pipe is formed of multiple pipe feeding the compartments at the same point;
  • FIG. 9 is a cross sectional view taken on line 9-9 of FIG. 8; 2
  • FIG. 10 is aside view, with parts in section, showing a further preferred embodiment wherein the filling pipe is formed as multiple pipes feeding the compartments at spaced locations along the filling line; and
  • FIG. 11 is a cross sectional view showing a modification of the conveyor means for the tube of bags.
  • a web 10 of bag blanks in accordance with the present invention is formed as a continuous, closed tube having upper and lower edges 12 and 14, respectively, and transverse seal lines 16 extending from the lower edge to a point spaced from the upper edge thereof, thereby dividing the tube into a series of interconnected compartments 18.
  • the tube may conveniently be formed by extrusion of a thermoplastic such as polyethylene or polypropylene, or composites, coextruded or laminated, and the transverse seals 16 may be formed as heat seal lines of, as best seen in FIG. 5, substantially U-shaped configuration having spaced parallel legs 20 joined at their upper ends by a bight portion 22.
  • a line of serrations 24 may also be provided extending intermediate the parallel legs 20 of each of the transverse seals 16.
  • the tube is described as preferably being formed in an extrusion process, since this offers many advantages such as ease of production and the formation of a tube having a sterile interior, it will be apparent that the tube might be formed in other ways, such as by merely folding a web longitudinally and sealing its upper edge or joining two webs with longitudinally extending seal lines.
  • the web of bag blanks is thereafter fed into the filling and sealing apparatus with the longitudinal channel 28 defined by the upper edge of the tube and the upper ends of the transverse seal lines 16 threaded along an elongated filling pipe 30.
  • Filling pipe 30 is supported adjacent its inlet end by any convenient means,
  • a pair of grooved feed rollers 36 driven by axles 38, are positioned adjacent the inlet end of the filling pipe 30 and form therewith, as best seen in FIG. 4 of the drawings, a pressure nip in which the tube is gripped adjacent its upper edge.
  • rotation of the feed rollers will cause the tube to be drawn along the filling pipe in a downstream direction.
  • idler rollers 39 also grooved, may be rotatably mounted adjacent the upstream end of the machine to provide additional support for pipe 30 at its discharge end.
  • a bottom conveyor 40 having a substantially horizontal reach 42 extends substantially coextensively with the feed pipe through the machine.
  • side conveyors 44 having substantially vertically extending reaches 46 are positioned on opposite sides of the feed pipe to support the tube on opposite sides thereof and assist in conveying the tube through the filling and sealing machine.
  • the product to be packaged is delivered from a supply 48 thereof, FIG. 2, to the inlet end of the feed pipe and the product flows through the feed pipe for ejection through the outlet 34 thereof into the compartments 18.
  • the fiow of the product may then be controlled by means of a metering valve 50 or some other conventional metering apparatus of, for example, the type which weighs the amount of product packaged and controls the metering valve to correct for under or overweight packages.
  • metering may also be accomplished by means of movable back up plates.
  • the filling and sealing machine may be provided, as seen in FIGS. 1 through 3 of the drawings, with metering plates 54 of substantially U-shaped configuration provided within the loops of the side conveyors in engagement with the vertically extending reaches 46 thereof.
  • the spacing between the metering plates 54 is adjustable, as indicated by the double headed arrows in FIG. 3 of the drawings, so that by assuring an adequate flow of product through the filler pipe 30 and selecting the proper size compartments 18, the amount of product deposited in compartments 18 may be controlled by adjusting the spacing between the metering plates 54.
  • a longitudinally extending seal line is formed in the tube by apparatus such as that schematically indicated at 58, which may take the form of a band sealer, with the longitudinal seal line intersecting the ends of the transverse seal lines 16.
  • Cutting means such as cutting wheels 62, may be positioned downstream of the sealer 58 to sever the tube intermediate its upper edge and the longitudinally extending seal line 60 to free the filled bags from the filling pipe. Normally, bulging of the filled bags will cause them to separate along the lines of serrations 24 to provide the individual filled, sealed bags 64 shown adjacent the downstream end of the apparatus in FIGS. 1 and 2 of the drawings. It will be apparent, however, that positive separating means may be utilized.
  • FIGS. 6 and 7 of the drawings a modification of the present invention will be described.
  • Like reference numerals in FIGS. 6 and 7 indicate the same parts as those shown in FIGS. 1 through 5 of the drawings.
  • a short conveyor section 66 is provided adjacent the downstream end of the machine, with the gap between conveyor 66 and bottom conveyor 40 bridged by a plate 68.
  • Conveyor 66 is associated with a weighing device 70 which weighs each individual, filled bag as it leaves the bottom conveyor 40.
  • the conveyor 66 may be operated at a somewhat higher speed than the conveyor 40 to insure that only one filled bag at a time passes over the weighing device 70.
  • the weighing device 70 may be of the conventional, quick registering type and signals from device 70 are transmitted over line 72 to a control mechanism 74 of, for example, the servo-control type. Control 74 in turn controls the rotation of threaded screws 76 extending diagonally on each side of the machine adjacent the upstream and downstream ends of the metering section 56.
  • the metering plates 54 are slidably mounted on the machine and are provided with internally threaded blocks 78 receiving the threaded screws 76.
  • filling pipe 80 is formed as a multiple pipe fed from three separate sources, 82, 84 and 86, communicating with the compartments 18 through individual pipes 88, and 92.
  • the multiple pipe arrangement may, as seen in FIGS. 8 and 9, take the form of individual pipes discharging through a single outlet 94 into the compartments 18.
  • the pipes may have their discharge ends secured in a plate 96 which seals the end of the pipe and prevents backflow in the outer pipe 80 through the spaces between the pipes 88, 90 and 92.
  • a filler pipe 98 may include multiple pipes Mill, W2; and 104 feeding through spaced outlets 106, 108 and till respectively.
  • the area on either side of each of the outlets is sealed to prevent infiltration of the product into the outer pipe 98.
  • plate 112 is positioned adjacent the outlet i 5
  • plates H4 and 116 are positioned on either side of the outlet 108
  • plates 11% and 120 are positioned on either side of the outlet l ltl
  • FIG. ll shows another preferred embodiment in accordance with the present invention.
  • side conveyor belts 122 extend upwardly on opposite sides of the bottom conveyor belt Ml and the metering plates 54.
  • the vertically extending reaches 124 of the belts extend upwardly on opposite sides of the filling pipe.
  • Rollers l26 are rotatably mounted by means of axles E28 and press the upper edges of the conveyor belts against the tube or web ltl and against the filler pipe to provide firm support for the web and at the same time eliminate the necessity of synchronizing the speed of the side conveyor belts with the speed of the feed rollers which regulate the travel speed of the film.
  • rollers such as those shown at 36 in HQ. l of the drawings are eliminated, since they are unnecessary when using extended side conveyor belts.
  • the upper edges of the side conveyor belts may be supported in any convenient manner, such as by the longitudinally extending channels l30 positioned within the belts as shown in H6. ill of the drawings.
  • the present invention provides a unique web of bag blanks, a method of making the web and apparatus and method for filling and sealing the bags thereof.
  • an elongated filling pipe having a discharge end and an inlet end
  • conveyor means in supporting engagement with said tubing material and including side conveyors having vertically extending reaches interposed between said opposed rollers and said tubing material,
  • Filling and sealing apparatus comprising:
  • means for controlling the amount of filling material deposited in said tubing including means for limiting expansion of said tubing as said filling material is deposited therein.
  • Filling and sealing apparatus comprising:
  • Filling and sealing apparatus comprising:
  • outlet means from said pipe comprising multiple outlets at spaced locations for discharging said filling material into said tubing material
  • a method of filling and sealing bags comprising:
  • a continuous web of bags consisting of a closed tube having upper and lower edges and spaced seal lines extending upwardly to a point spaced from said tube upper edge and forming a series of compartments
  • a method of filling and sealing bags comprising:
  • a continuous web of bags consisting of a closed tube having upper and lower edges and spaced seal lines extending upwardly to a point spaced from said tube upper edge and forming a series of compartments
  • a method of filling and sealing bags comprising:
  • a continuous web of bags consisting of a closed tube having upper and lower edges and spaced seal lines extending upwardly to a point spaced from said tube upper edge and forming a series of compartments
  • said controlling means comprises spaced plate members positioned on opposite sides of said pipe for limiting laterial expansion of said tubing material as it moves along said pipe.
  • controlling means comprises:
  • one of said outlets is positioned adjacent said discharge end of said filling pipe
  • an unwind stand for holding in roll form a web of tubing having upper and lower edges and spaced heat seal lines extending from said bottom edge to a point spaced from said upper edge
  • a conveyor having a substantially horizontally oriented reach extending substantially coextensively with said pipe and adapted to engage said bottom edge of said tubing material
  • rollers forming pressure nips with said pipe and adapted to receive said tubing material in said nips
  • said feeding means includes conveyor means in supporting relationship to said tubing material.
  • said conveyor means includes conveyors having opposed, substantially vertically oriented reaches in engagement with opposite sides of said tubing material.
  • said conveyor means includes a conveyor having a reach extending substantially normal to said substantially vertically oriented reaches and engaging a bottom edge of said tubing material.
  • said feeding means includes opposed rollers forming pressure nips with opposite sides of said pipe and engaging said tubing material therein.
  • said feeding means further includes conveyor means in supporting engagement with said tubing material.
  • said conveyor means includes side conveyors having vertically extending reaches interposed between said opposed rollers and said tubing material.
  • the apparatus of claim d further comprising:
  • said controlling means comprises means for limiting expansion of said tubing as said material is deposited in said compartments.
  • controlling means comprises:
  • said outlet means comprises a single outlet through which said multiple pipes discharge.
  • said outlet means comprises multiple outlets at spaced locations through which said multiple pipes discharge.
  • a method of packaging material in bags comprising:
  • a continuous web of bags consisting of a closed tube having upper and lower edges and spaced lines extending upwardly to a point spaced from said tube upper edge, forming a series olcompartments and an elongated channel extending along said tube upper edge.
  • step of supplying material to said tube at spaced locations therealong comprises:
  • step of supplying a gaseous material to said tube comprises:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)
US00265769A 1972-06-23 1972-06-23 Filling and sealing system Expired - Lifetime US3813845A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
US00265769A US3813845A (en) 1972-06-23 1972-06-23 Filling and sealing system
CA171,545A CA1005027A (en) 1972-06-23 1973-05-16 Filling and sealing system
IN1212/CAL/73A IN139042B (zh) 1972-06-23 1973-05-23
NLAANVRAGE7307634,A NL173728C (nl) 1972-06-23 1973-06-01 Inrichting voor het vullen en afdichten van een aantal onderling verbonden compartimenten van een buisvormig lichaam uit flexibel materiaal.
IT50497/73A IT985336B (it) 1972-06-23 1973-06-06 Procedimento ed apparecchio per riempire e sigillare sacchetti di materiale plastico in nastro continuo
DE2328998A DE2328998A1 (de) 1972-06-23 1973-06-07 Verfahren und vorrichtung zum fuellen und versiegeln von behaeltern
CH847473A CH575313A5 (zh) 1972-06-23 1973-06-12
GB2889673A GB1409846A (en) 1972-06-23 1973-06-18 Filling and sealing system
SE7308803A SE411738B (sv) 1972-06-23 1973-06-21 Apparat for fyllning och forsegling av en serie med varandra forbundna utrymmen
JP6926773A JPS5634483B2 (zh) 1972-06-23 1973-06-21
DK349273A DK153752C (da) 1972-06-23 1973-06-22 Bane af poser omfattende et kontinuerligt, udfladet materialeroer.
FR7322958A FR2189260B1 (zh) 1972-06-23 1973-06-22
US05/436,104 US3941306A (en) 1972-06-23 1974-01-24 System of interconnected, sealed and unsealed bags
CA227,720A CA1017291A (en) 1972-06-23 1975-05-23 Heat sealable web of bags
DK135379A DK149714C (da) 1972-06-23 1979-04-02 Fremgangsmaade til fyldning og forsegling af poser med flydende materiale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00265769A US3813845A (en) 1972-06-23 1972-06-23 Filling and sealing system

Publications (1)

Publication Number Publication Date
US3813845A true US3813845A (en) 1974-06-04

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Application Number Title Priority Date Filing Date
US00265769A Expired - Lifetime US3813845A (en) 1972-06-23 1972-06-23 Filling and sealing system

Country Status (12)

Country Link
US (1) US3813845A (zh)
JP (1) JPS5634483B2 (zh)
CA (2) CA1005027A (zh)
CH (1) CH575313A5 (zh)
DE (1) DE2328998A1 (zh)
DK (2) DK153752C (zh)
FR (1) FR2189260B1 (zh)
GB (1) GB1409846A (zh)
IN (1) IN139042B (zh)
IT (1) IT985336B (zh)
NL (1) NL173728C (zh)
SE (1) SE411738B (zh)

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US4856261A (en) * 1986-11-27 1989-08-15 Courtaulds Packaging Australia Limited Forming small flexible containers
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US4887411A (en) * 1987-06-25 1989-12-19 Baxter International Inc. Apparatus for filling bags or pouches with a perfusion liquid
US4893453A (en) * 1989-01-24 1990-01-16 Weikert Roy J Packaging system and method
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US9266300B2 (en) 2011-07-07 2016-02-23 Automated Packaging Systems, Inc. Air cushion inflation machine
US9844911B2 (en) 2013-11-21 2017-12-19 Automated Packaging Systems, Inc. Air cushion inflation machine
US20180178938A1 (en) * 2015-05-15 2018-06-28 The Coca-Cola Company System and method of in-line shaping, filling and enclosing to form product packaging
US10647460B2 (en) 2013-03-15 2020-05-12 Automated Packaging Systems, Llc On-demand inflatable packaging
US10944813B2 (en) 2009-05-29 2021-03-09 Orionswave, Llc Selective access of multi-rate data from a server and/or peer
US10977519B2 (en) 2011-05-13 2021-04-13 Microsoft Technology Licensing, Llc Generating event definitions based on spatial and relational relationships
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US11220082B2 (en) * 2019-08-21 2022-01-11 Michael G Kaminski Method for inflating airbags

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IT985336B (it) 1974-11-30
GB1409846A (en) 1975-10-15
DK149714C (da) 1987-03-16
DK153752B (da) 1988-08-29
NL173728B (nl) 1983-10-03
SE411738B (sv) 1980-02-04
JPS4962293A (zh) 1974-06-17
CH575313A5 (zh) 1976-05-14
CA1005027A (en) 1977-02-08
JPS5634483B2 (zh) 1981-08-11
DK149714B (da) 1986-09-15
DK135379A (da) 1979-04-02
CA1017291A (en) 1977-09-13
DK153752C (da) 1989-01-09
IN139042B (zh) 1976-05-01
FR2189260B1 (zh) 1976-07-23
NL173728C (nl) 1984-03-01
NL7307634A (zh) 1973-12-27
FR2189260A1 (zh) 1974-01-25
DE2328998A1 (de) 1974-01-10

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