US3280532A - Method of closing and forming pliable containers filled with a liquid - Google Patents

Method of closing and forming pliable containers filled with a liquid Download PDF

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Publication number
US3280532A
US3280532A US283390A US28339063A US3280532A US 3280532 A US3280532 A US 3280532A US 283390 A US283390 A US 283390A US 28339063 A US28339063 A US 28339063A US 3280532 A US3280532 A US 3280532A
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Prior art keywords
liquid
container
carton
rectangular
sleeve
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Expired - Lifetime
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US283390A
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English (en)
Inventor
Berry Jean-Luc
Dardaine Edgar
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EP Remy et Cie SARL
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EP Remy et Cie SARL
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    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling

Definitions

  • This invention relates to pliable containers or cartons for liquids and is concerned more particularly with the closing of the upper end of prismatic containers already filled with liquid.
  • These containers or cartons are usually parallelepipedic and are generally made of a pliable or semirigid sheet which can for example be of plastic material or preferably a complex comprising a resistant paper coated on both surfaces with a substance capable of being heatwelded, such as polyethylene.
  • a parallelepipedic bag or carton is formed, the base of which is welded in liquid-tight manner and folded to form a rectangular end, but it is obvious that such a carton could be obtained by any other means; it could comprise, for example, an end joined to the pliable or semirigid parallelepipedic walls.
  • the upper parts of its lateral walls are folded and closed so as to form a liquid-tight cover or upper end of rectangular form. All these operations are carried out by machine and there is thus obtained containers filled with liquid which can be easily grouped in packages of reduced volume because of their parallelepipedic form.
  • Known methods of closing cartons filled with liquid consist in folding the upper part of the lateral walls in the form of a rectangular end before carrying out the liquid-tight welding, or in carrying out the two operations simultaneously, the deformation and the folding being effected in an absolutely mechanical manner and associated with the welding.
  • a matrix maintains the parallelepipedic form of the part of the carton filled with liquid, while the upper part is deformed by means of fingers which extend into the carton and gripper devices which engage these edges and fold them flat in order to form a rectangular end, while other members carry out the liquid-tight welds.
  • the machines carrying these methods into effect necessarily comprise mouldable members executing complex movements and are consequently very complicated.
  • these machines comprise fingers which are introduced into the cartons, thereby providing the danger of introducing impurities into the liquid which they contain and of polluting or contaminating the said liquid. This is a serious disadvantage, especially when this liquid is a food such as milk.
  • the invention has for its object to provide a method of and a means for enabling the closing and the shaping of the upper end of the cartons filled with liquid to be carried out by very simple operations and under perfectly hygienic conditions.
  • the invention also covers the containers which have this closure means.
  • a method of closing and shaping the upper end of a parallelepipedic container having pliable or semirigid walls and filled with liquid comprises closing the upper opening of the container in a liquid-tight and complete'manner, and deforming the upper part of the container thus closed in order to obtain a fiat end con-- nected to two ears, shaping of the upper end being effected by giving the upper part of the lateral walls of the package a progressively prismatic form at the same time as flattening the closed upper part, as a result of which the previous 3,239,532 Patented Oct. 25, 1966 closing of the upper opening is final and the ears form spaces which constitute part of the internal volume of the container.
  • a container having pliable or semirigid walls and filled with liquid, comprising in its upper part a fiat end connected to two triangular ears, each formed of two walls respectively fast with the flat end and a lateral wall of the container, in which the ears constitute liquid-tight spaces communicating freely with the internal volume of the container.
  • ears are a very interesting feature of the invention, because they constitute two projections enabling one carton or two juxtaposed cartons to be gripped between two fingers of the same hand. Moreover, the internal volume of the ears forms part of the volume of the container. It is sufiicient to cut the point of one ear in order to obtain a very convenient pouring spout.
  • the liquid-filled carton is preferably positioned with its opening at the top and the lower part of the carton is kept in parallelepipedic form over a small height, for example by means of a matrix or a sleeve, and the lips of the openings are brought together along a straight line parallel to two of the faces of the said cartons, the upper unsupported part of the carton being deformed as required.
  • the opening is then closed by continuous tight welding from one end to the other of the lips thus brought together.
  • the upper part of the carton is then progressively made parallelepipedic and pressure is simultaneous'ly applied to the upper welded part, which is deformed in order to produce a flat end connected to two triangular ears.
  • FIGURE 1 shows an open and unfilled container, seen in perspective.
  • FIGURE 2 shows the container filled with liquid and at the moment of closing the same.
  • FIGURES 3 and 4 show the container in two differen stages during the operation of shaping the upper end.
  • FIGURE 5 shows two containers which are filled and closed and are ready to be packed for delivery.
  • the carton shown in FIGURE 1 is made from a complex material formed by a sheet of kraft paper coated with polyethylene on its two surfaces, the paper having been first of all marked with longitudinal creases 1, which define its lateral corners and transverse creases 2, which define the contour of its lower end and transverse creases 3 which define the liquid level and the contour of the upper end.
  • Inclined score lines such as 4 and 5 respectively mark the position of the folds of the bottom end and upper end.
  • the sheet is then folded at 6 and the margins 7 thereof which have been brought together are welded to form a tube.
  • This tube is given a parallelepipedic shape and its lower part is welded and flattened along the folds 2 and 4 in order to form a rectangular end, 8.
  • a parallelepipedic carton is obtained which has a rectangular end 6 and four lateral faces 11, 12, 13 and 14, the face 13 containing the weld 7 and the face 14 having the score line 6.
  • FIGURE 2 illustrates the first operation of closing the upper end.
  • the carton is placed, preferably before filling, in a rigid sleeve 9 which is of rectangular section and has a height substantially smaller than the carton, said sleeve strictly maintaining the parallelepipedic form of the lower part of the carton.
  • the upper margins 10a and 10b of two opposite faces 11 and 12 of the carton are brought together so as to obtain two lips which are applied one against the other at along a straight line extending from the weld 7 to the score line 6. It will be seen from the drawing that the upper part of the carton, due to the pliability of its walls and the fluidity of the liquid container therein, then takes the rough form of a half tetrahedron merging into the lower part which is kept parallelepipedic by the sleeve 9.
  • FIGURES 3 and 4 In order to give the upper end its rectangular form, the procedure is as indicated in FIGURES 3 and 4.
  • the carton is turned upside down and it is positioned on a pressure member 15, which is shown diagrammatically in FIGURE 3 by the arrow a, so as to subject it to a thrust in the direction of this arrow.
  • the sleeve 9 is slid downwardly along the lateral faces of the carton.
  • care is taken to flatten the'weld 10 in the same direction as the weld 7.
  • the pressure member 15 preferably has van upper rectangular face, the width e of'which isequal to or slightly less than the width of the faces 11 and 12.
  • FIGURE 3 shows the progressive deformation of the carton, whereby it is'possible on completing the operation (FIGURE 4) to obtain a rectangular endwhich is defined by the folds 3 and connected to two ears 16 and 17 of general triangular form which are an extension of the faces 13 and 14. These ears are formedby the faces 13v and 14 being folded flat along score lines 5.
  • the sleeve 9 is then gripped and the container turned over, the said container sliding easily out of this sleeve.
  • the use of the. sleeve 9 thus enables the container to be manipulated from the formation of the lower end 8 until it is placed in position for dispatch, without having to touch the container itself and consequently of providing the danger of damaging or soiling it.
  • This rigid sleeve thus makes it possible for the pliable or semirigid containers, which are empty or full, closed or unclosed, to bemanipulated by entirely mechanical means exactly in the-same way as rigid objects, for example bottles.
  • the reversing of the container after having effected the welding of the lips brought together at 10 assures that the liquid is brought into contact with this weld and consequently the latter is cooled.
  • This cooling is particularly advantageous, because it improves the mechanical resistance of the'weld at 'a moment when the operation described with reference to FIGURES 3 and 4 cause it to be subjected to forces.
  • the sleeve 9 could, for example, be telescopic and have a lower part which holds the lower part of the carton and a part which slides upwardly in order to ensure the shaping of the upper part .of the carton and the rectangular upper end, in association with a member similar to 15 bearing downwardly on the weld 10 and the adjoining part. It is seen that the operations of closing the carton and of shaping the .upper end only require very simple accessories and movements. These operations can be carried out by machines comprising a very small number of elements and extremely reduced kinematics.
  • FIGURE 5 shows how it is possible simultaneously to lift two cartons by gripping the ears by 16 and ldthereof between two fingers.
  • the elements which initially maintain the shape of the lowerpartof the carton and then reestablish the parallelepipedic form of the part adjoining the upper end need not be sliding sleeves, but can for example be matrices with movable elements.
  • a method of sealing and shaping the open end of a substantially rectangular container having pliable lateral walls and filled with a substantially fluid material comprising the steps of juxtap-ositioning the free marginal edges of said walls along a straight line, securing said edges together from end to end to finally seal said open end, sliding a rectangular sleeve having a cross section substantially equal to that of said container along said Walls in a direction towards said sealed end, while applying a flat surface under pressure to said sealed end in an opposite direction to the movement of said sleeve, Whereby a flat rectangular end is formed which is connected to two triangular tabs.
  • a method according to claim 1 further comprising the step or" turning the sealed end of said container down after said step of securing said edges together.
  • a method of sealing and shaping the open end of a substantially rectangular container having pliable lateral walls and filled with a substantially fluid material comprising the steps of placing said container with said open end upwards, juxtapositioning the free marginal edges of said walls along a straight line, placing a rectangular sleeve having a cross section substantially equal to that References Cited by the Examiner UNITED STATES PATENTS 2,152,323 3/ 1939 Moore 53-46 X 2,196,666 4/1940 Moore 53- 16 X 2,229,864 1/1941 Moore 5346- X 2,255,975 "9/1941 Hulltkrans 53--39 TRAVIS S.-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Making Paper Articles (AREA)
US283390A 1962-06-05 1963-05-27 Method of closing and forming pliable containers filled with a liquid Expired - Lifetime US3280532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR899758A FR1332651A (fr) 1962-06-05 1962-06-05 Procédé et dispositif de fermeture et de mise en forme des emballages souples emplis de liquide

Publications (1)

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US3280532A true US3280532A (en) 1966-10-25

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US283390A Expired - Lifetime US3280532A (en) 1962-06-05 1963-05-27 Method of closing and forming pliable containers filled with a liquid

Country Status (5)

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US (1) US3280532A (fr)
DK (1) DK108778C (fr)
FR (1) FR1332651A (fr)
GB (1) GB987039A (fr)
SE (1) SE318222B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812644A (en) * 1971-09-12 1974-05-28 Chuba Kikai Co Ltd Method for packaging flowable materials and apparatus for manufacturing packaging bags
US4834823A (en) * 1982-05-07 1989-05-30 Tetra Pak Developement S.A. Package for flowable filling materials having a re-closable opening

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1461899B1 (de) * 1963-12-27 1970-02-19 Tetra Pak Rausing & Co Kg Verfahren zum Herstellen von Quaderpackungen mit quadratischem Querschnitt
FR2554783B1 (fr) * 1983-11-15 1986-08-22 Vittel Eaux Min Procede pour former le fond d'u
FR3078059B1 (fr) * 2018-02-21 2020-06-26 Thimonnier Transformation d’un sachet souple rempli en un sachet vertical tenant sur sa base par pliage et scellage du fond

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152323A (en) * 1937-03-18 1939-03-28 Humoco Corp Container
US2196666A (en) * 1938-11-21 1940-04-09 Humoco Corp Method and means of making containers
US2229864A (en) * 1937-11-06 1941-01-28 Humoco Corp Method and means for making containers
US2255975A (en) * 1940-05-16 1941-09-16 Milprint Inc Art of packing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152323A (en) * 1937-03-18 1939-03-28 Humoco Corp Container
US2229864A (en) * 1937-11-06 1941-01-28 Humoco Corp Method and means for making containers
US2196666A (en) * 1938-11-21 1940-04-09 Humoco Corp Method and means of making containers
US2255975A (en) * 1940-05-16 1941-09-16 Milprint Inc Art of packing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812644A (en) * 1971-09-12 1974-05-28 Chuba Kikai Co Ltd Method for packaging flowable materials and apparatus for manufacturing packaging bags
US4834823A (en) * 1982-05-07 1989-05-30 Tetra Pak Developement S.A. Package for flowable filling materials having a re-closable opening

Also Published As

Publication number Publication date
GB987039A (en) 1965-03-24
DK108778C (da) 1968-02-05
FR1332651A (fr) 1963-07-19
SE318222B (fr) 1969-12-01

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