US3531906A - Method of producing a package with a corner seal - Google Patents

Method of producing a package with a corner seal Download PDF

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Publication number
US3531906A
US3531906A US687033A US3531906DA US3531906A US 3531906 A US3531906 A US 3531906A US 687033 A US687033 A US 687033A US 3531906D A US3531906D A US 3531906DA US 3531906 A US3531906 A US 3531906A
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US
United States
Prior art keywords
package
sealing
seal
zones
seals
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
US687033A
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English (en)
Inventor
Carl Axel Bjorkengren
Frans W Johansson
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.)
Akerlund and Rausing AB
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Akerlund and Rausing AB
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 Akerlund and Rausing AB filed Critical Akerlund and Rausing AB
Application granted granted Critical
Publication of US3531906A publication Critical patent/US3531906A/en
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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
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
    • B65D75/44—Individual packages cut from webs or tubes

Definitions

  • the present invention which constitutes a division of our co-pending application, Ser. No. 593,066, filed Nov. 9, 1966 entitled Package With a Corner Seal, now Pat. No. 3,372,859 relates to a package consisting of a material which is heat sealed at least on the side facing the interior of the package and which includes at least one narrow sealing zone which is located parallel to and close to one of the edges of the package and which intersects one or more of the other edges of the package.
  • a package of this kind is contemplated which has been made by the forming of a web material into a tube and transversely sealing said tube within narrow transverse zones, which will thus each constitute a sealing zone of the kind defined above.
  • the present invention solves the abovementioned sealing problem by the feature that the package is provided with one or more additional sealing zones disposed in an angular relation to said sealing zone and arranged so that they preventively seal the packages within the point or points at which said first-mentioned sealing zone intersects said other edges.
  • the additional sealing zones are four in number, which together with the longitudinal edges of the package and the transverse sealing zones define preferably isosceles rectangular triangles.
  • the additional sealing zones are preferably produced by a lighter pressure than the first-mentioned sealing zone which may be produced for example by means of a narrow ruler. This narrow ruler is then pressed against the package with such a pressure that the package will get a folding line, whereby possible bending will take place along this line and not in said additional sealing zones.
  • FIGS. 1 and 2 show two mutually rectangular views of a simple pillow-shaped package designed according to the invention.
  • FIGS. 1 and 2 a package'is shown which is made by forming a web material into a tube having a longitudinal seal 1 at which the material is heat sealed with inside against inside.
  • the tube formed has thereupon been given a bottom closure by being heat sealed within a narrow zone 2.
  • the package has been filled via a filling pipe extending down into the tube formed, Whereupon it has been closed at its top by a heat seal in a second narrow sealing zone 3.
  • the package according to the invention which consists of two thicknesses of material throughout its area, these forming the front and back walls respectively, does not differ from what is generally known in the art.
  • the package shown is now provided with one or more additional sealing zones 6 disposed in an angular relation to the sealing zones 2 and 3 and arranged so that they preventively seal the package within the points a.
  • these additional sealing zones are four in number, i.e.
  • Each seal zone is constituted by a plurality of parallel spaced rectilinear seals graduated in length and which extend parallel to a side edge of the package.
  • the sealing zones 6 are produced by a lighter pressure than the sealing zones 3. This may be accomplished for example by mounting the press members for producing the various sealing zones on a single tool but with the press members for the sealing zones 6 arranged farther retracted from the corresponding press members for the sealing zones 2 and 3.
  • the sealing zones 2 and 3 may be produced by means of a narrow ruler, a pressure such that the finished package will have a folding line in these sealing zones being preferably chosen, whereby a possible bending of the sealing fins 4 and 5 is caused to take place at this line and not in the sealing zones 6.
  • the package material consists of an oxygentight thermoplastic laminate, which has a thickness of the order of one tenth or a few tenths of a millimeter.
  • the sealing zones 2 and 3 may be produced by means of a ruler of a Width of l to 2 millimeters and fixed to a tool, while the sealing zones 6 are produced by press members mounted on the same tool and, as already mentioned, preferably placed slightly farther retracted than the ruler. In practice, it has been found convenient to choose this difference in depth between the various press members of the same order of magnitude as the thickness of material, i.e. half the thickness of the sealing fin.
  • a three-ply laminate may be mentioned which may in clude a polyethylene-terephthalate film, a polyester film and a PVDC film having a weight of about grams per square meter and a thickness of about 0.1 millimeter.
  • a great number of other materials may of course also be contemplated, e.g. pure polyethylene.
  • the three-ply laminate described above is primarily intended for packaging coffee or other products sensitive to oxygen.
  • FIGS. 3, 4 and 5 show alternative designs of the sealing zones 6. Otherwise these figures agree with FIG. 1.
  • the sealing zone 6 consists of a broad rectilinear seal 8 disposed at an angle of 45 in relation to the sealing zone 3.
  • the sealing zone 6 consists of a narrow diagonally extending rectilinear seal 9 and narrow parallel spaced rectilinear seals 10 disposed at right angles in relation to the sealing zone 3 and which extend from zone 3 to the diagonal seal 9.
  • the seals 10 may be arranged more or less closely spaced and are produced, for example, by means of a grooved press jaw. If the seals are arranged sufficiently closely spaced, the seal 9 may be omitted which is the construction shown in FIG. 1. Alternativelly, the seal 9 may of course be used alone.
  • the sealing zone 6 consists of narrow parallel spaced rectilinear seals 11 which are arranged in oblique relation to the sealing zone 3 and which may also be produced by means of a grooved press jaw, these seals 11 being graduated in length and extending between a side edge 7 of the package and transverse seal 3.
  • the method of producing a pillow-shaped package which comprises the steps of partially flattening a length of tubular thermoplastic material to establish the front and back walls of the package, pressure heat-sealing the front and back walls of said tube along a first transverse seal to form the bottom of the package, filling the package, pressure heat-sealing the front and back walls at the top of the filled package along a second transverse seal and pressure heat-sealing the front and back walls together at each corner portion of the package to form corner seals which extend from a side edge thereof to the adjacent transverse seal thereby to seal off the junction points at the ends of said transverse seals with the side edges of the package, the pressure for forming said corner seals being less than that for forming said tranverse seals.
  • corner seals are formed diagonally across the angles between the transverse seals and the side edges of the package.
  • corner seals are formed by diagonal seals extending across the angles between the transverse seals and the side edges of the package and by at least one seal extending parallel to the side edge from each diagonal seal to the adjacent transverse seal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Packages (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
US687033A 1965-12-09 1967-11-30 Method of producing a package with a corner seal Expired - Lifetime US3531906A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15941/65A SE314626B (ko) 1965-12-09 1965-12-09

Publications (1)

Publication Number Publication Date
US3531906A true US3531906A (en) 1970-10-06

Family

ID=20301470

Family Applications (1)

Application Number Title Priority Date Filing Date
US687033A Expired - Lifetime US3531906A (en) 1965-12-09 1967-11-30 Method of producing a package with a corner seal

Country Status (10)

Country Link
US (1) US3531906A (ko)
AT (1) AT275404B (ko)
BE (1) BE689409A (ko)
CH (1) CH466986A (ko)
DE (1) DE1511929A1 (ko)
DK (1) DK115076B (ko)
FR (1) FR1502446A (ko)
NL (1) NL6615769A (ko)
NO (1) NO121541B (ko)
SE (1) SE314626B (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007838A (en) * 1975-10-01 1977-02-15 Awad Nagi M Flexible sealed liquid containing packet
US20070245693A1 (en) * 2004-06-09 2007-10-25 Eco Lean Research & Development A/S Method and Device for Making a Sealing and Use of Such Method
EP2618771A2 (de) * 2010-09-21 2013-07-31 Semperit Aktiengesellschaft Holding Verpackung
EP2805898A3 (en) * 2013-05-15 2015-02-18 Birds Eye IPCO Limited A method of packaging a product and means for carrying out the method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433608A1 (de) * 1984-09-13 1986-03-20 Focke & Co (GmbH & Co), 2810 Verden Umhuellung fuer beutelverpackungen sowie verfahren und vorrichtung zum herstellen derselben
EP0496923A1 (de) * 1991-02-01 1992-08-05 M & W Verpackungen Mildenberger & Willing GmbH Seitenfalten-Schlauchbeutel mit Griff
WO1993011054A1 (en) * 1991-12-02 1993-06-10 Dalgety Spillers Foods Limited Packages
US5636925A (en) * 1995-03-22 1997-06-10 Bonar Packaging, Inc. Heavy duty bag having an easy opening spout, and method and apparatus for making a heavy duty bag having an easy opening spout
WO2012094773A1 (en) * 2011-01-10 2012-07-19 The Procter & Gamble Company Pouch with concave-curved corner.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635788A (en) * 1949-12-13 1953-04-21 Wingfoot Corp Package
US2779462A (en) * 1956-02-16 1957-01-29 Roderick W Hoag Single use flexible container device
US2948999A (en) * 1957-09-24 1960-08-16 American Cyanamid Co Manufacture of suture packages
US3380646A (en) * 1962-11-14 1968-04-30 Leon Doyen Container of plastic material and method of producing same
US3381886A (en) * 1966-07-26 1968-05-07 Goglio Luigi Heat sealable bags

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635788A (en) * 1949-12-13 1953-04-21 Wingfoot Corp Package
US2779462A (en) * 1956-02-16 1957-01-29 Roderick W Hoag Single use flexible container device
US2948999A (en) * 1957-09-24 1960-08-16 American Cyanamid Co Manufacture of suture packages
US3380646A (en) * 1962-11-14 1968-04-30 Leon Doyen Container of plastic material and method of producing same
US3381886A (en) * 1966-07-26 1968-05-07 Goglio Luigi Heat sealable bags

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007838A (en) * 1975-10-01 1977-02-15 Awad Nagi M Flexible sealed liquid containing packet
US20070245693A1 (en) * 2004-06-09 2007-10-25 Eco Lean Research & Development A/S Method and Device for Making a Sealing and Use of Such Method
US7731645B2 (en) * 2004-06-09 2010-06-08 Eco Lean Research & Development A/S Method for forming a container blank including a seal
EP2618771A2 (de) * 2010-09-21 2013-07-31 Semperit Aktiengesellschaft Holding Verpackung
EP2618771B1 (de) * 2010-09-21 2019-08-14 Semperit Aktiengesellschaft Holding Verpackung
EP2805898A3 (en) * 2013-05-15 2015-02-18 Birds Eye IPCO Limited A method of packaging a product and means for carrying out the method

Also Published As

Publication number Publication date
NO121541B (ko) 1971-03-08
CH466986A (de) 1968-12-31
FR1502446A (fr) 1967-11-18
AT275404B (de) 1969-10-27
BE689409A (ko) 1967-04-14
NL6615769A (ko) 1967-06-12
DE1511929A1 (de) 1970-07-23
DK115076B (da) 1969-09-01
SE314626B (ko) 1969-09-08

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