US3598023A - Method of making a tight package provided with windows - Google Patents

Method of making a tight package provided with windows Download PDF

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Publication number
US3598023A
US3598023A US822923A US3598023DA US3598023A US 3598023 A US3598023 A US 3598023A US 822923 A US822923 A US 822923A US 3598023D A US3598023D A US 3598023DA US 3598023 A US3598023 A US 3598023A
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US
United States
Prior art keywords
sheet
flaps
wafer
package
openings
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
US822923A
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English (en)
Inventor
Toivo-Artturi Hakala
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
Original Assignee
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 US3598023A publication Critical patent/US3598023A/en
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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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4204—Inspection openings or windows

Definitions

  • the present invention relates to a method of making a tight package provided with windows, comprising a carton sleeve with suitable end closure flaps and an inner lining.
  • the method according to the invention includes the following steps:
  • the carton sheet is laminated over its whole surface with a lining of a transparent plastic film or the like, which also extends over and closes said openings.
  • Sleeve blanks are punched out in register with said openings.
  • the separate sheet blanks are glued, e.g. by a method known per se to form a sleevelike structure.
  • the lining is provided with a bottom by attaching a wafer across the lower opening by sealing it to the lining along the edge of this opening and to the end closure flaps which are folded outwardly, the same material being preferably chosen for the lining and the wafer, after which the package is ready for filling and a subsequent sealing of the upper opening which is preferably sealed in the same way as the lower opening.
  • the blanks are normally made in the form of large sheets. It is these sheets, which are used as the basic material by the method according to the present invention. After the sheets are appropriately printed the desired windows are punched out of the sheet. After that, the sheets are covered with plastic either by a normal extrusion proceeding or by glueing a prefabricated plastic film to the carton sheets. After this the individual sleeve blanks are cut out in a normal way.
  • the invention is especially intended to be employed for a foldable carton sleeve intended for home freezing, it will be described in the following with reference to the accompanying drawings, which show such a sleeve.
  • FIG. I shows a plain packaging blank, which has been punched out of a larger carton sheet in accordance with the above description.
  • FIG. 2 shows at perspective a package erected and closed in one end, the package being made according to the method of the invention.
  • FIG. 3 finally, shows the closed end of the same package in a position in which the package has been partly compressed.
  • the present package consists of a body part fonned as a sleeve with four sidewalls I,2,3 and 4. From these sidewalls four bottom flaps 5,6,7 and 8 and four top flaps 9,10,]! and 12 extend. Furthermore the blank shown in FIG. I comprises a sealing zone 13 with sealing flaps l4 and I5, which are meant to be joined with the sidewall I and the top and bottom flaps 9 and respectively. Finally FIG. I shows a window opening 18 punched out of the carton blank and provided with a window 19. This window 19 consists preferably of a polyethylene film, which covers, in accordance with the invention, the whole inside of the sleeve, its flaps included.
  • the blank shown in FIG. .I is intended to be folded to the shape shown in FIG. 2.
  • the wafer 16 is preferably made of the same material as the lining 19.
  • the wafer I6 can be made of plastic-coated paper with good extension capacity.
  • the wafer 16 is secured around the mouth of the package b the means of heat sealing.
  • the cuts, which separate the end aps of that end of the package, which is closed by the wafer, are preferably not out too close to the body part of the sleeve. Due to this fact the tightening of the package is facilitated by ohtaining a stretching of the lining film I9 in the four corners of the package at this end when the end flaps 5-8 are folded out to the position shown in FIG. 2.
  • two of the sidewalls of the package namely the sidewalls l and 3 and the end flaps 5,7,9 and II joined with these sidewalls, are provided with central longitudinal crease lines 17, along which the package in empty condition can be pressed flat, the last mentioned sidewalls and the end flaps as well as the wafer 16 being bellowfolded.
  • FIG. 3 the folding has however only begun. in practice the blank is folded completely flat, that is until the sides 2 and 4 and the end flaps 6 and 8 get into contact with each other.
  • the invention is not restricted only to the embodiment described above, but may be varied within the scope of the following claims.
  • shape of the different flaps may be varied. That is also true about the choice of the material.
  • liquidtight materials are used for the lining as well as for the wafer, so as to provide a guaranteed liquidtight and robust package having windows due to the fact that the wafer 16 is well protected inside the bottom flaps 5- 8.
  • stamping package blanks from said laminated sheet said blanks being registered with said window openings and being provided with end flaps at each end of the blanks and a sealing flap along a side,
  • the flaps and attached wafer may be folded inwardly and sealed to close the end of the sleevelike structure for filling the package, and the end flaps at the opposite end may be sealed thereafter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Frangible Articles (AREA)
  • Making Paper Articles (AREA)
US822923A 1968-05-08 1969-05-08 Method of making a tight package provided with windows Expired - Lifetime US3598023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE6197/68A SE317915B (fi) 1968-05-08 1968-05-08

Publications (1)

Publication Number Publication Date
US3598023A true US3598023A (en) 1971-08-10

Family

ID=20268127

Family Applications (1)

Application Number Title Priority Date Filing Date
US822923A Expired - Lifetime US3598023A (en) 1968-05-08 1969-05-08 Method of making a tight package provided with windows

Country Status (3)

Country Link
US (1) US3598023A (fi)
DE (1) DE1923179A1 (fi)
SE (1) SE317915B (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20020486A1 (it) 2001-04-03 2003-09-08 Eurocopter Deutschland Albero motore subcritico e procedimento per la sua fabbricazione in materiale composito con fibre

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1745385A (en) * 1923-01-12 1930-02-04 Hoague Sprague Corp Box and method of making same
US2135409A (en) * 1937-04-29 1938-11-01 Munn John Carton forming and lining machine
US2241710A (en) * 1939-01-21 1941-05-13 Container Corp Container
US2748673A (en) * 1951-03-09 1956-06-05 Hedwin Corp Liner for composite containers
US3040963A (en) * 1961-08-08 1962-06-26 Pillsbury Co Package
US3073216A (en) * 1960-05-19 1963-01-15 Gaunt Thomas Norman Liquid proof containers
US3097574A (en) * 1959-11-16 1963-07-16 American Can Co Method of producing a collapsed container and a unitary blank therefor
US3379102A (en) * 1965-10-07 1968-04-23 Heller Container and method of producing same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1745385A (en) * 1923-01-12 1930-02-04 Hoague Sprague Corp Box and method of making same
US2135409A (en) * 1937-04-29 1938-11-01 Munn John Carton forming and lining machine
US2241710A (en) * 1939-01-21 1941-05-13 Container Corp Container
US2748673A (en) * 1951-03-09 1956-06-05 Hedwin Corp Liner for composite containers
US3097574A (en) * 1959-11-16 1963-07-16 American Can Co Method of producing a collapsed container and a unitary blank therefor
US3073216A (en) * 1960-05-19 1963-01-15 Gaunt Thomas Norman Liquid proof containers
US3040963A (en) * 1961-08-08 1962-06-26 Pillsbury Co Package
US3379102A (en) * 1965-10-07 1968-04-23 Heller Container and method of producing same

Also Published As

Publication number Publication date
DE1923179A1 (de) 1970-01-15
SE317915B (fi) 1969-11-24

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