US3655111A - Thermoformed plastic container - Google Patents

Thermoformed plastic container Download PDF

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Publication number
US3655111A
US3655111A US83332A US3655111DA US3655111A US 3655111 A US3655111 A US 3655111A US 83332 A US83332 A US 83332A US 3655111D A US3655111D A US 3655111DA US 3655111 A US3655111 A US 3655111A
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Prior art keywords
container
side walls
top wall
cover
plastic
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US83332A
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Robert A Surerus
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    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/06—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together with movable parts adapted to be placed in alternative positions for nesting the containers when empty and for stacking them when full
    • B65D21/064—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together with movable parts adapted to be placed in alternative positions for nesting the containers when empty and for stacking them when full the movable parts being an attached or integral cover made of one or two pieces
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/265—Drinking cups
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/36—Closures with frangible parts adapted to be pierced, torn, or removed, to provide discharge openings

Definitions

  • ABSTRACT A bottom-filled, top-dispensing container formed from a single sheet of plastic, such as styrene or the like.
  • the container is so formed that, prior to being filled, it provides an open bottom so that like containers may be vertically stacked one upon the other.
  • the container comprises a hollow substantially square body having an integral top wall, a corner of which provides a pouring spout and a removable cover heat-sealed thereon.
  • the container closure or bottom wall is initially formed as an integral part of the body extending laterally therefrom and being adapted to be folded back upon the container when the latter is filled so as to seal the same.
  • the container is best suited for commodities, such as milk, that require a large accessible opening for rapid mechanical filling operation, thereby reducing the degree of foaming of the material and the loss of capacity of the container during the filling operation.
  • the container is so designed that it may be vertically stacked prior to filling and stored thereafter within the least amount of area. Being substantially square in cross section, the container when formed will utilize a greater proportion of the sheet of plastic from which it is constructed, than normal and therefore necessitate a lesser amount of trimming and waste.
  • FIG. 1 is a side elevational view of the container as formed from a single sheet of plastic material; and ready for filling;
  • FIG. 2 is a top plan view of the container illustrated in FIG. 1;
  • FIG. 3 is a side elevational view of the container after it has been filled and showing in dotted lines the cover portion which is readily removable;
  • FIG. 4 is a fragmentary detailed sectional view of a portion of the container.
  • the container as depicted in FIG. 1 is constructed to utilize the most material from a single sheet of plastic, such as styrene, from which it is thermo-formed in a mold.
  • the container 10 when thermo-formed provides a substantially square shaped body consisting of equally sized and shaped side walls 11, 12, 13 and 14. These side walls will be constructed so as to have substantially uniform thickness.
  • the formed container 10 has a normally open bottom defined by a raised bead 16 extending about the peripheral edges of the side walls.
  • a short peripheral skirt 17 which extends beneath the bead 16 provides at one edge 18 a pliable connection between the bottom wall or closure 19 which, during the thermo-forming of the container 10, is constructed from the sheet of plastic material in a manner whereby it extends laterally and to one side of the side wall 11 of the container 10.
  • the thickness of the bottom wall or closure 10 be greater than the thickness of the side walls of the container so as to add the necessary rigidity to the container when filled and sealed.
  • a suitable top wall 20 be provided which is formed integral with the side walls 11, 12, 13 and 14 so as to form a closed open-bottom container.
  • the top wall 20 has a portion 21 thereof, adjacent to its junction with the corner line defined between the side walls 11 and 12, thermoformed to provide a pouring spout 22 and removable cover 23 therefor.
  • the material in the portion 21 of the top wall 20 is normally stretched to a length and thickness such as is indicated at 24, so that a layer 25 thereof may be folded back upon a second layer 26 while an equal length of the material 27 extends through the continuing normal plane of the top wall 20 and merges into the upper comerforming portions of the side walls 11 and 12.
  • the first and second layers 25 and 26 so formed provide the removable cover for the pouring spout defined by the merging portion of the material 27.
  • the latter will be scored as at 28 to define a pouring spout through which the material in the container can be dispensed.
  • this container It is desirable in the construction of this container that the combined thicknesses of the layers 25 and 26, when folded upon themselves and then bent over the equal remaining portion 27, will be equal to the thickness of the top wall 20, providing thereby a unified rigid top wall for the container.
  • the bottom wall or closure 19 which is also provided with a peripheral bead 29, is folded and snapped into sealing contact with the bead 16 formed in the side walls of the container and, it, too, can then be sealed by a heat seal or hot melt operation.
  • a container made in the foregoing manner utilizes the maximum of the sheet of plastic from which it is molded without the necessity of trimming or grinding and, when filled, because of the substantially square shape, a plurality of the containers may be packed in a compact area for ready transportation and use.
  • a bottom-filled top-dispensing plastic container thermoformed from a single sheet of plastic comprising a. a hollow substantially square open-bottom body including substantially identically shaped side walls,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

A bottom-filled, top-dispensing container formed from a single sheet of plastic, such as styrene or the like. The container is so formed that, prior to being filled, it provides an open bottom so that like containers may be vertically stacked one upon the other. The container comprises a hollow substantially square body having an integral top wall, a corner of which provides a pouring spout and a removable cover heat-sealed thereon. The container closure or bottom wall is initially formed as an integral part of the body extending laterally therefrom and being adapted to be folded back upon the container when the latter is filled so as to seal the same.

Description

United States Patent Surerus [54] THERMOFORMED PLASTIC CONTAINER [72] Inventor: Robert A. Surerus, 410 Parkview Drive,
Roselle, 111. 60172 [22] Filed: Oct. 23, 1970 21 Appl. No.: 83,332
[52] U.S. Cl ..229/7, 220/315, 220/54, 222/517, 222/541, 229/25 [51] Int. Cl. ..B65d 1/26, B65d 17/24 [58] Field of Search... ....229/7 R, 2.5; 220/315 R, 60 R,
[56] References Cited UNITED STATES PATENTS 2,655,303 10/1953 Cox ..229/2.5 3,082,903 3/1963 Stevensetal. ..229/2.5X
[15] 3,655,111 [451 Apr. 11,1972
3,383,009 5/1968 Weikert ..220/315 X 3,458,113 7/1969 Swartzbaugh ..220/315 X 3,511,433 5/1970 Andrews et al. ..229/2.5 X
Primary ExaminerDavis T. Moorhead Att0mey-Edward C. Threedy [5 7] ABSTRACT A bottom-filled, top-dispensing container formed from a single sheet of plastic, such as styrene or the like. The container is so formed that, prior to being filled, it provides an open bottom so that like containers may be vertically stacked one upon the other. The container comprises a hollow substantially square body having an integral top wall, a corner of which provides a pouring spout and a removable cover heat-sealed thereon. The container closure or bottom wall is initially formed as an integral part of the body extending laterally therefrom and being adapted to be folded back upon the container when the latter is filled so as to seal the same.
6 Claims, 4 Drawing Figures Patented April 11, 1972 111/ vs/vz'oja,
Koamr A. 50427916 .51
THERMOFORMED PLASTIC CONTAINER SUMMARY OF THE INVENTION A container for liquid or semi-liquid material thermoformed froma single sheet of plastic, such as styrene, the construction of the container being such as to permit convenient filling through a normally open bottom and for dispensing of the material through a pre-formed spout formed in the top wall, the latter provided with a readily removable cover. The container is best suited for commodities, such as milk, that require a large accessible opening for rapid mechanical filling operation, thereby reducing the degree of foaming of the material and the loss of capacity of the container during the filling operation. The container is so designed that it may be vertically stacked prior to filling and stored thereafter within the least amount of area. Being substantially square in cross section, the container when formed will utilize a greater proportion of the sheet of plastic from which it is constructed, than normal and therefore necessitate a lesser amount of trimming and waste.
GENERAL DESCRIPTION The container and its construction will be best understood by reference to the accompanying drawing, in which there is disclosed the preferred form and construction, and in which:
FIG. 1 is a side elevational view of the container as formed from a single sheet of plastic material; and ready for filling;
FIG. 2 is a top plan view of the container illustrated in FIG. 1;
FIG. 3 is a side elevational view of the container after it has been filled and showing in dotted lines the cover portion which is readily removable; and
FIG. 4 is a fragmentary detailed sectional view of a portion of the container.
The container as depicted in FIG. 1 is constructed to utilize the most material from a single sheet of plastic, such as styrene, from which it is thermo-formed in a mold.
The container 10 when thermo-formed provides a substantially square shaped body consisting of equally sized and shaped side walls 11, 12, 13 and 14. These side walls will be constructed so as to have substantially uniform thickness.
The formed container 10 has a normally open bottom defined by a raised bead 16 extending about the peripheral edges of the side walls. A short peripheral skirt 17 which extends beneath the bead 16 provides at one edge 18 a pliable connection between the bottom wall or closure 19 which, during the thermo-forming of the container 10, is constructed from the sheet of plastic material in a manner whereby it extends laterally and to one side of the side wall 11 of the container 10.
It is desirable that the thickness of the bottom wall or closure 10 be greater than the thickness of the side walls of the container so as to add the necessary rigidity to the container when filled and sealed.
As the container is so designed to be bottom-filled and topdispensing, it is necessary that a suitable top wall 20 be provided which is formed integral with the side walls 11, 12, 13 and 14 so as to form a closed open-bottom container.
In order to provide a top-dispensing container, the top wall 20 has a portion 21 thereof, adjacent to its junction with the corner line defined between the side walls 11 and 12, thermoformed to provide a pouring spout 22 and removable cover 23 therefor.
To form the pouring spout 22, the material in the portion 21 of the top wall 20 is normally stretched to a length and thickness such as is indicated at 24, so that a layer 25 thereof may be folded back upon a second layer 26 while an equal length of the material 27 extends through the continuing normal plane of the top wall 20 and merges into the upper comerforming portions of the side walls 11 and 12. The first and second layers 25 and 26 so formed provide the removable cover for the pouring spout defined by the merging portion of the material 27. During forming and extension of the layers 25, 26 and 27, the latter will be scored as at 28 to define a pouring spout through which the material in the container can be dispensed.
It is desirable in the construction of this container that the combined thicknesses of the layers 25 and 26, when folded upon themselves and then bent over the equal remaining portion 27, will be equal to the thickness of the top wall 20, providing thereby a unified rigid top wall for the container.
After the closure has been formed out of the layers 25 and 26, it may be heat-sealed upon the remaining portion 27, so that it assumes the condition as shown in FIG. 1.
After the container 10 is filled, the bottom wall or closure 19 which is also provided with a peripheral bead 29, is folded and snapped into sealing contact with the bead 16 formed in the side walls of the container and, it, too, can then be sealed by a heat seal or hot melt operation.
The advantages of a container formed in the manner hereinbefore described are that in an empty condition they can be readily stacked one upon another with the body portions nested by reason of the fact that the side walls are provided with a slight taper from the bottom to the top, as illustrated in FIG. 1. A container made in the foregoing manner utilizes the maximum of the sheet of plastic from which it is molded without the necessity of trimming or grinding and, when filled, because of the substantially square shape, a plurality of the containers may be packed in a compact area for ready transportation and use.
While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.
Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:
l. A bottom-filled top-dispensing plastic container thermoformed from a single sheet of plastic comprising a. a hollow substantially square open-bottom body including substantially identically shaped side walls,
b. a top wall integral with said side walls and of a thickness greater than the thickness of said side walls,
c. a closure for the open bottom of said body connected to and extending laterally from one edge of one of said side walls,
d. means for connecting said closure to said one edge of one of said side walls and about which said closure is bent into closing position upon the bottom edges of said side walls of said body,
e. a section of the plastic forming said top wall adjacent one corner line between juxtaposed side walls as well as a part of said corner line, formed to provide a length and thickness so as to have a portion thereof bent back upon itself to form a cover,
f. a remaining section of said length of plastic formed to complete said top wall and said side walls defining said corner line and provided with a score line defining a removable spout opening disposed beneath said cover when the same is connected to said remaining section of said portion of said top wall.
2. a container as defined in claim 1 wherein said cover has a length equal to said remaining section forming the complete top wall of said container, as well as that part of the corner lines formed by said side walls so as to completely cover the same, said cover being removably attached by a heat seal to said remaining portion of said top wall and said corner line formed by said side walls.
3. A container as defined by claim 1 wherein said section of said plastic that is bent back upon itself to form said cover and said remaining portion forming the complete top wall of said container, have a combined thickness equal to the thickness of said top wall of said container.
4. A container as defined by claim 1 wherein said side walls adjacent the open bottom of said body provide a peripheral hollow bead and said closure is formed to provide a like bead about its periphery adapted to be inserted into said hollow bead of said side walls when said closure is mounted on said body to seal the open end thereof.
5. A container as defined by claim 4 wherein said cover has a length equal to said remaining section forming the complete top wall of said container, as well as that part of the comer lines formed by said side walls so as to completely cover the container, have a combined thickness equal to the thickness of said top wall of said container.

Claims (6)

1. A bottom-filled top-dispensing plastic container thermoformed from a single sheet of plastic comprising a. a hollow substantially square open-bottom body including substantially identically shaped side walls, b. a top wall integral with said side walls and of a thickness greater than the thickness of said side walls, c. a closure for the open bottom of said body connected to and extending laterally from one edge of one of said side walls, d. means for connecting said closure to said one edge of one of said side walls and about which said closure is bent into closing position upon the bottom edges of said side walls of said body, e. a section of the plastic forming said top wall adjacent one corner line between juxtaposed side walls as well as a part of said cOrner line, formed to provide a length and thickness so as to have a portion thereof bent back upon itself to form a cover, f. a remaining section of said length of plastic formed to complete said top wall and said side walls defining said corner line and provided with a score line defining a removable spout opening disposed beneath said cover when the same is connected to said remaining section of said portion of said top wall.
2. a container as defined in claim 1 wherein said cover has a length equal to said remaining section forming the complete top wall of said container, as well as that part of the corner lines formed by said side walls so as to completely cover the same, said cover being removably attached by a heat seal to said remaining portion of said top wall and said corner line formed by said side walls.
3. A container as defined by claim 1 wherein said section of said plastic that is bent back upon itself to form said cover and said remaining portion forming the complete top wall of said container, have a combined thickness equal to the thickness of said top wall of said container.
4. A container as defined by claim 1 wherein said side walls adjacent the open bottom of said body provide a peripheral hollow bead and said closure is formed to provide a like bead about its periphery adapted to be inserted into said hollow bead of said side walls when said closure is mounted on said body to seal the open end thereof.
5. A container as defined by claim 4 wherein said cover has a length equal to said remaining section forming the complete top wall of said container, as well as that part of the corner lines formed by said side walls so as to completely cover the same, said cover being removably attached by a heat seal to said remaining portion of said top wall and said corner line formed by said side walls.
6. A container as defined by claim 4 wherein said section of said plastic that is bent back upon itself to form said cover and said remaining portion forming the complete top wall of said container, have a combined thickness equal to the thickness of said top wall of said container.
US83332A 1970-10-23 1970-10-23 Thermoformed plastic container Expired - Lifetime US3655111A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900106A (en) * 1973-11-26 1975-08-19 Joseph Cantales Stackable plastic garbage can with integral top
US3915296A (en) * 1974-01-24 1975-10-28 Richard Hugh H Spencer Container for mixing liquid with a material
US4793516A (en) * 1985-11-27 1988-12-27 Kishimoto Sangyo Co., Ltd. Nestable packaging container
US5339973A (en) * 1992-05-14 1994-08-23 Genpak Corp. Latch for a container
US6892513B1 (en) 1999-10-19 2005-05-17 Kraft Foods Holdings, Inc. Method of forming and filling an end load carton with a food delivery system
US20190127107A1 (en) * 2016-04-15 2019-05-02 Å&R Carton Lund Aktiebolag Paperboard packaging container and lid
US20190375560A1 (en) * 2018-06-06 2019-12-12 Clarity, Inc. Cups and Containers with a Living Hinge and Sleeves
USD893953S1 (en) 2018-06-07 2020-08-25 Clarity, Inc. Cup with a lid
US11254473B2 (en) 2018-06-06 2022-02-22 Clarity, Inc. Cups and containers with a living hinge and sleeves
US11878840B2 (en) 2019-07-02 2024-01-23 Gpi Systems Ab Method of producing a packaging container and a packaging container
US12006098B2 (en) 2018-08-31 2024-06-11 Gpi Systems Ab Composite container with separable top, a body blank, and a method of separating a top end portion from a main body of the container
US12122571B2 (en) 2018-05-23 2024-10-22 Gpi Systems Ab Flexible membrane with valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2655303A (en) * 1947-03-28 1953-10-13 Gen Package Corp Molded pulp carton
US3082903A (en) * 1960-11-02 1963-03-26 William Lowell Thomas Inc Reclosable integral package
US3383009A (en) * 1967-03-17 1968-05-14 Gen Films Inc Container
US3458113A (en) * 1968-04-19 1969-07-29 Owens Illinois Inc Plastic container
US3511433A (en) * 1968-03-13 1970-05-12 Sinclair Koppers Co Unitary foam sheet container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2655303A (en) * 1947-03-28 1953-10-13 Gen Package Corp Molded pulp carton
US3082903A (en) * 1960-11-02 1963-03-26 William Lowell Thomas Inc Reclosable integral package
US3383009A (en) * 1967-03-17 1968-05-14 Gen Films Inc Container
US3511433A (en) * 1968-03-13 1970-05-12 Sinclair Koppers Co Unitary foam sheet container
US3458113A (en) * 1968-04-19 1969-07-29 Owens Illinois Inc Plastic container

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900106A (en) * 1973-11-26 1975-08-19 Joseph Cantales Stackable plastic garbage can with integral top
US3915296A (en) * 1974-01-24 1975-10-28 Richard Hugh H Spencer Container for mixing liquid with a material
US4793516A (en) * 1985-11-27 1988-12-27 Kishimoto Sangyo Co., Ltd. Nestable packaging container
US5339973A (en) * 1992-05-14 1994-08-23 Genpak Corp. Latch for a container
US6892513B1 (en) 1999-10-19 2005-05-17 Kraft Foods Holdings, Inc. Method of forming and filling an end load carton with a food delivery system
US20190127107A1 (en) * 2016-04-15 2019-05-02 Å&R Carton Lund Aktiebolag Paperboard packaging container and lid
US12122571B2 (en) 2018-05-23 2024-10-22 Gpi Systems Ab Flexible membrane with valve
US20190375560A1 (en) * 2018-06-06 2019-12-12 Clarity, Inc. Cups and Containers with a Living Hinge and Sleeves
CN110562595A (en) * 2018-06-06 2019-12-13 克莱锐特公司 Cup and container with living hinge and sleeve
US10947018B2 (en) * 2018-06-06 2021-03-16 Clarity, Inc. Cups and containers with a living hinge and sleeves
US11254473B2 (en) 2018-06-06 2022-02-22 Clarity, Inc. Cups and containers with a living hinge and sleeves
USD893953S1 (en) 2018-06-07 2020-08-25 Clarity, Inc. Cup with a lid
USD992354S1 (en) 2018-06-07 2023-07-18 Clarity, Inc. Cup with lid
USD996902S1 (en) 2018-06-07 2023-08-29 Clarity, Inc. Container with a lid
USD970964S1 (en) 2018-06-07 2022-11-29 Clarity, Inc. Cup with exterior thermal ribbing
US12006098B2 (en) 2018-08-31 2024-06-11 Gpi Systems Ab Composite container with separable top, a body blank, and a method of separating a top end portion from a main body of the container
US11878840B2 (en) 2019-07-02 2024-01-23 Gpi Systems Ab Method of producing a packaging container and a packaging container

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