US3900155A - Package - Google Patents
Package Download PDFInfo
- Publication number
- US3900155A US3900155A US441218A US44121874A US3900155A US 3900155 A US3900155 A US 3900155A US 441218 A US441218 A US 441218A US 44121874 A US44121874 A US 44121874A US 3900155 A US3900155 A US 3900155A
- Authority
- US
- United States
- Prior art keywords
- opening
- strip
- closure strip
- package
- top panel
- 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
Links
Images
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
- B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
- B65D5/708—Separate tearable flexible elements covering a discharge opening of a container, e.g. adhesive tape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/15—Sheet, web, or layer weakened to permit separation through thickness
Definitions
- the present invention relates to a package of disposable character and of the type which is manufactured from a laminated material comprising a support material layer and at least one heat-sealable thermoplastic layer, which package is provided with a pouring opening and a closure strip which is applied over the pouring opening.
- FIG. 1 shows the upper part of the package with a closure strip applied thereto
- FIG. 2 shows a section through the closure strip and the package wall
- FIG. 3 shows an example of the anchoring of the closure strip.
- the package in accordance with the invention may consist appropriately, as is shown in FIG. 1, of a number of plane wall sections 1.
- a pouring opening 5 is provided, and over the pouring opening 5 and the region around the same a closure strip 2 is applied, the
- the walls of the package may consist appropriately of a laminated material containing a support material of e.g. paper or foamed polystyrene and a homogeneous, thermoplastic material, e.g. homogeneous polystyrene, coated on at least one side of the support material.
- a support material e.g. paper or foamed polystyrene
- a homogeneous, thermoplastic material e.g. homogeneous polystyrene
- a pouring opening is punched which is given such a shape that the contents of the package can be emptied out in a well collected, straight forwards directed jet.
- a closure strip of a formable, appropriately thermoformable material eg polystyrene
- the closure strip has to be manufactured of a material which is adapted so that it can be sealed againstthe outside layer of the package wall.
- polystyrene is used as a coating material on the supportmaterial, the closure strip must also be made of polystyrene.
- the said closure strip can be applied and formed on the package either in connection with the forming of the package or after the package has been filled with the intended contents.
- the application and forming of the closure strip takes place so that the strip is applied over the pouring opening, whereupon a recessed form is imparted to the strip in the region of the pouring opening.
- This recessed form can be produced either by forming the closure strip by means of a pressing tool after heating, or by forming a pressure difference between the two sides of the strip, the higher pressure acting against the outside of the packing strip. This pressure difference is achieved in that air is evacuated from the side of the packing material which is intended to form the inside of the package, or at least from the region nearest the edge of the pouring opening.
- the said pressure difference can also be obtained, in that the pressure is increased on the side of the packing material which is intended to form the outside of the package.
- the closure strip is formed in connection with the formation of the package it is appropriate to apply, at the instant of forming, a plate under the pouring opening, in order to prevent that the recess of the closure strip extends too far into the package. It is desirable that the part of the closure strip which extends into the package should have a relatively plane shape at the same time as extending past the inside edge of the pouring opening. If the closure strip is manufactured of a thermoformable material it is appropriate to apply the pressure difference only after the part of the strip, which is in the region of the pouring opening, has been warmed up to formable consistency.
- the pressure difference between the two sides of the closure strip is to be adjusted to such a size, that the strip forms a recessed part 3 which extends past the inside edge 4 of the opening hole, and so that the cross-sectional area of the recessed part which is formed under the inside edge of the pouring opening is larger than the area of the pouring opening.
- the removal and splitting of the outer layer of the laminated material can take place in the area of the pouring opening, and the closure strip is anchored in the thermoplastic layer of the packing material so that the closure strip remains at hand for re-closing.
- Another embodiment comprising an anchoring of 5 the closure strip in the thermoplastic layer of the packing material after the opening of the package, consists in that a region in the direct vicinity of any one of the edges of the closure strip is folded over 180 and sealed in the region of the pouring opening at the same time as the forming of the closure strip takes place as described above. If this method of folding the closure strip over 180 is applied, it is appropriate to punch a score in the outer homogeneous plastic layer between the pouring opening and the folded over part of the closure strip. The said score prevents the splitting of the outer plastic layer from extending past the folded over part.
- the cross-sectional area of the recessed part of the closure strip parallel to the wall of the package, wherein the pouring opening is situated being larger than the area of the pouring opening, it is possible to re-obtain a relatively tight closure after the package has been opened.
- the recessed part 3 of the closure strip is applied on re-closure to the pouring opening, and by a slight pressure the said part 3 is slightly deformed, so that it is given temporarily the same crosssectional areas as that of the pouring opening, which makes it possible for this part of the closure strip to pass through the pouring opening. After passing through the pouring opening this recessed part resumes its original shape and forms a tight closure against the wall of the package which is in the region of the pouring opening.
- a disposable package comprising a container body formed of a laminated material having a support layer and an outer layer of heat sealable thermoplastic material thereon and having a flat top panel provided with a pouring opening therein, a closure strip covering said opening, at least a portion of said closure strip being sealed to the outer layer of the top panel in the area surrounding said opening, that portion of said strip which covers said opening being recessed into said opening, said recessed portion extending into said container body beyond the inner surface of said top panel and having a surface parallel to the inner surface of said top panel and an area larger than that of said opening to releasably engage the periphery of said opening and secure the recessed portion of said strip within said opening, a portion of the closure strip remote from said opening being folded under through 180 and sealed to the outer layer of said top panel, said outer layer being scored beneath said closure strip between the pouring opening and the portion of said strip which is folded under to resist tearing, when said package is opened, of the outer layer where the folded portion of said closure strip is sealed to said outer layer.
- a disposable package as claimed in claim I wherein the laminated material comprises a support layer of foamed plastic material and layers of homogeneous plastic material on both sides thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Making Paper Articles (AREA)
- Closing Of Containers (AREA)
- Bag Frames (AREA)
- Cartons (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH241073A CH562135A5 (de) | 1973-02-20 | 1973-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3900155A true US3900155A (en) | 1975-08-19 |
Family
ID=4233140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US441218A Expired - Lifetime US3900155A (en) | 1973-02-20 | 1974-02-11 | Package |
Country Status (12)
Country | Link |
---|---|
US (1) | US3900155A (de) |
JP (1) | JPS5414996B2 (de) |
AR (1) | AR197662A1 (de) |
CA (1) | CA1002470A (de) |
CH (1) | CH562135A5 (de) |
DE (1) | DE2460705C3 (de) |
FR (1) | FR2218253B1 (de) |
GB (1) | GB1436969A (de) |
IT (1) | IT1008281B (de) |
NL (1) | NL175507C (de) |
SE (1) | SE394643B (de) |
SU (1) | SU532335A3 (de) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3977591A (en) * | 1974-06-28 | 1976-08-31 | Ab Ziristor | Cover strip for the pouring opening in a packing container |
US4019675A (en) * | 1974-11-08 | 1977-04-26 | Ab Akerlund & Rausing | Locking container |
US4109566A (en) * | 1971-09-29 | 1978-08-29 | Electro-Food Ab | Food container having electrode pockets |
US4223789A (en) * | 1977-12-24 | 1980-09-23 | Tetra Pack Developpement S.A. | Opening means for a packaging means of flexible material |
GB2158810A (en) * | 1984-05-18 | 1985-11-20 | Ferrero Spa | Container e.g. for sweets, usable as moneybox |
US4557398A (en) * | 1984-08-17 | 1985-12-10 | International Paper Company | End closure structure for a container |
EP0190577A2 (de) * | 1985-02-05 | 1986-08-13 | AB Tetra Pak | Flüssigkeitspackung mit Giesskante |
EP0236556A2 (de) * | 1986-03-11 | 1987-09-16 | Tetra Alfa Holdings S.A. | Fliessmittelpackung und Verfahren zur Herstellung derselben |
US4705197A (en) * | 1986-07-29 | 1987-11-10 | International Paper Company | Pour spout for containers |
US4715528A (en) * | 1985-09-20 | 1987-12-29 | Tetra Pak International Ab | Reclosable opening arrangement on a packing container |
US4730769A (en) * | 1985-04-18 | 1988-03-15 | Tetra Pak International Ab | Packaging for liquids and process and apparatus for its manufacture |
US4775098A (en) * | 1987-12-11 | 1988-10-04 | Adolph Coors Company | Carton with a reclosable pour opening |
US4782646A (en) * | 1986-04-17 | 1988-11-08 | Ab Tetra Pak | Method and an arrangement for the finishing of an opening arrangement on a packing container |
US4792069A (en) * | 1985-07-02 | 1988-12-20 | Tetra Pak International Ab | Pouring edge on packing containers |
US4819839A (en) * | 1984-03-23 | 1989-04-11 | Tetra Pak International Ab | Opening arrangement on packing containers |
US4852764A (en) * | 1988-08-22 | 1989-08-01 | Packaging Corporation Of America | Pour spout closure |
US5067614A (en) * | 1989-03-07 | 1991-11-26 | Tetra Pak Holdings S.A. | Packing container provided with opening arrangement |
US5098365A (en) * | 1988-12-16 | 1992-03-24 | Ab Profor | Method of connecting a gripping device to sheet or web-formed packaging material |
US5551629A (en) * | 1993-12-10 | 1996-09-03 | The Procter & Gamble Company | Granular substance storing and dispensing container |
DE19544601A1 (de) * | 1995-11-30 | 1997-06-05 | Tetra Laval Holdings & Finance | Verpackung mit einer Ausgieß- und Verschließeinirchtung |
US5938107A (en) * | 1996-03-21 | 1999-08-17 | Tetra Laval Holdings & Finance S.A. | Packaging container and a blank for producing the same |
US6131804A (en) * | 1999-02-23 | 2000-10-17 | Rexam Plastics Inc. | Reclosable fitment with pull off liner film |
US6349866B1 (en) | 1999-02-13 | 2002-02-26 | Stone Container Corporation | Paperboard can with an integrated paperboard lid having a hinge on the lid |
US6454161B1 (en) | 1996-10-31 | 2002-09-24 | Tetra Laval Holdings & Finance Sa | Opening device on a packaging sheet material |
US6471122B1 (en) | 1999-02-13 | 2002-10-29 | Stone Container Corporation | Paperboard can with an integrated paperboard lid having a slide closure |
US20020179605A1 (en) * | 2001-05-29 | 2002-12-05 | Claudia Miani | Closable opening device for sealed packages of pourable food products |
US20040108371A1 (en) * | 2002-12-06 | 2004-06-10 | Tetra Laval Holdings & Finance S.A. | Opening arrangement, packaging and method of providing a packaging with an opening arrangement |
US20040146618A1 (en) * | 2003-01-24 | 2004-07-29 | Stewart Noel G. | Perforated air-tight seal membrane for a canister containing a particulate-type product |
US20040149381A1 (en) * | 1992-10-13 | 2004-08-05 | Tetra Laval Holdings & Finance S.A. | Method of producing packaging material in the form of a continuous laminate web |
US20050101466A1 (en) * | 2002-12-06 | 2005-05-12 | Tetra Laval Holdings & Finance Sa | Opening arrangement, packaging and method of providing a packaging with an opening arrangement |
US20050236425A1 (en) * | 2002-09-09 | 2005-10-27 | Tetra Laval Holdings & Finance S.A. | Closable opening device for packages of pourable food products |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2706735C2 (de) * | 1977-02-17 | 1984-11-22 | Altstädter Verpackungsvertriebs Gesellschaft mbH, 6102 Pfungstadt | Öffnungsvorrichtung für Verpackungsbehälter |
JPS5436640U (de) * | 1977-08-18 | 1979-03-10 | ||
SE441666B (sv) * | 1984-03-21 | 1985-10-28 | Tetra Pak Int | Oppningsanordning vid forpackningsbehallare samt sett att tillverka densamma |
DE4107607A1 (de) * | 1991-03-09 | 1992-09-10 | Tetra Pak Gmbh | Ausgiesseinrichtung fuer eine fliessmittelpackung und verfahren zur herstellung derselben |
JPH0572715U (ja) * | 1992-03-06 | 1993-10-05 | 広行 飯塚 | 飲料水等カンの衛生シート用品 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1520527A (en) * | 1921-11-25 | 1924-12-23 | Nat Paper Can Company | Container |
US2153911A (en) * | 1937-10-18 | 1939-04-11 | Benedetti Felix | Container |
US2309144A (en) * | 1939-09-16 | 1943-01-26 | American Can Co | Container |
US2784892A (en) * | 1953-12-23 | 1957-03-12 | American Can Co | Dispensing top closure assembly and method of attaching same to a container |
US2983962A (en) * | 1960-03-15 | 1961-05-16 | Monsanto Chemicals | Method for preparing laminated resin foam structures |
US3039669A (en) * | 1961-11-20 | 1962-06-19 | Howard M Hill | Dispensing container and blank |
US3213071A (en) * | 1959-11-16 | 1965-10-19 | Phillips Petroleum Co | Foamed olefin polymer process |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3526351A (en) * | 1968-04-25 | 1970-09-01 | Logistics Ind Corp | Container |
-
1973
- 1973-02-20 CH CH241073A patent/CH562135A5/xx not_active IP Right Cessation
-
1974
- 1974-02-07 GB GB561574A patent/GB1436969A/en not_active Expired
- 1974-02-08 SE SE7401685A patent/SE394643B/xx not_active IP Right Cessation
- 1974-02-11 US US441218A patent/US3900155A/en not_active Expired - Lifetime
- 1974-02-14 NL NLAANVRAGE7402058,A patent/NL175507C/xx not_active IP Right Cessation
- 1974-02-15 DE DE2460705A patent/DE2460705C3/de not_active Expired
- 1974-02-19 CA CA192,995A patent/CA1002470A/en not_active Expired
- 1974-02-19 SU SU2000374A patent/SU532335A3/ru active
- 1974-02-19 FR FR7405497A patent/FR2218253B1/fr not_active Expired
- 1974-02-20 JP JP2034774A patent/JPS5414996B2/ja not_active Expired
- 1974-02-20 IT IT48588/74A patent/IT1008281B/it active
- 1974-02-20 AR AR252440A patent/AR197662A1/es active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1520527A (en) * | 1921-11-25 | 1924-12-23 | Nat Paper Can Company | Container |
US2153911A (en) * | 1937-10-18 | 1939-04-11 | Benedetti Felix | Container |
US2309144A (en) * | 1939-09-16 | 1943-01-26 | American Can Co | Container |
US2784892A (en) * | 1953-12-23 | 1957-03-12 | American Can Co | Dispensing top closure assembly and method of attaching same to a container |
US3213071A (en) * | 1959-11-16 | 1965-10-19 | Phillips Petroleum Co | Foamed olefin polymer process |
US2983962A (en) * | 1960-03-15 | 1961-05-16 | Monsanto Chemicals | Method for preparing laminated resin foam structures |
US3039669A (en) * | 1961-11-20 | 1962-06-19 | Howard M Hill | Dispensing container and blank |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4109566A (en) * | 1971-09-29 | 1978-08-29 | Electro-Food Ab | Food container having electrode pockets |
US3977591A (en) * | 1974-06-28 | 1976-08-31 | Ab Ziristor | Cover strip for the pouring opening in a packing container |
US4019675A (en) * | 1974-11-08 | 1977-04-26 | Ab Akerlund & Rausing | Locking container |
US4223789A (en) * | 1977-12-24 | 1980-09-23 | Tetra Pack Developpement S.A. | Opening means for a packaging means of flexible material |
US4819839A (en) * | 1984-03-23 | 1989-04-11 | Tetra Pak International Ab | Opening arrangement on packing containers |
GB2158810A (en) * | 1984-05-18 | 1985-11-20 | Ferrero Spa | Container e.g. for sweets, usable as moneybox |
US4557398A (en) * | 1984-08-17 | 1985-12-10 | International Paper Company | End closure structure for a container |
EP0190577A3 (en) * | 1985-02-05 | 1987-10-28 | Ab Tetra Pak | Package for liquids with a spout |
AU580381B2 (en) * | 1985-02-05 | 1989-01-12 | Tetra Pak International A.B. | A pack for liquids |
EP0190577A2 (de) * | 1985-02-05 | 1986-08-13 | AB Tetra Pak | Flüssigkeitspackung mit Giesskante |
US4730769A (en) * | 1985-04-18 | 1988-03-15 | Tetra Pak International Ab | Packaging for liquids and process and apparatus for its manufacture |
US4792069A (en) * | 1985-07-02 | 1988-12-20 | Tetra Pak International Ab | Pouring edge on packing containers |
US4715528A (en) * | 1985-09-20 | 1987-12-29 | Tetra Pak International Ab | Reclosable opening arrangement on a packing container |
US4887765A (en) * | 1986-03-11 | 1989-12-19 | Tetra Pak Finance & Trading S.A. | Fluid pack and process for the production thereof |
EP0236556A2 (de) * | 1986-03-11 | 1987-09-16 | Tetra Alfa Holdings S.A. | Fliessmittelpackung und Verfahren zur Herstellung derselben |
EP0236556A3 (en) * | 1986-03-11 | 1989-04-26 | Tetra Pak Finance & Trading S.A. | Liquid package and method of producing the same |
US4782646A (en) * | 1986-04-17 | 1988-11-08 | Ab Tetra Pak | Method and an arrangement for the finishing of an opening arrangement on a packing container |
US4705197A (en) * | 1986-07-29 | 1987-11-10 | International Paper Company | Pour spout for containers |
US4775098A (en) * | 1987-12-11 | 1988-10-04 | Adolph Coors Company | Carton with a reclosable pour opening |
US4852764A (en) * | 1988-08-22 | 1989-08-01 | Packaging Corporation Of America | Pour spout closure |
US5098365A (en) * | 1988-12-16 | 1992-03-24 | Ab Profor | Method of connecting a gripping device to sheet or web-formed packaging material |
US5067614A (en) * | 1989-03-07 | 1991-11-26 | Tetra Pak Holdings S.A. | Packing container provided with opening arrangement |
US20040149381A1 (en) * | 1992-10-13 | 2004-08-05 | Tetra Laval Holdings & Finance S.A. | Method of producing packaging material in the form of a continuous laminate web |
US7135088B2 (en) | 1992-10-13 | 2006-11-14 | Tetra Laval Holdings & Finance S.A. | Method of producing packaging material in the form of a continuous laminate web |
US5551629A (en) * | 1993-12-10 | 1996-09-03 | The Procter & Gamble Company | Granular substance storing and dispensing container |
DE19544601A1 (de) * | 1995-11-30 | 1997-06-05 | Tetra Laval Holdings & Finance | Verpackung mit einer Ausgieß- und Verschließeinirchtung |
US5938107A (en) * | 1996-03-21 | 1999-08-17 | Tetra Laval Holdings & Finance S.A. | Packaging container and a blank for producing the same |
US6454161B1 (en) | 1996-10-31 | 2002-09-24 | Tetra Laval Holdings & Finance Sa | Opening device on a packaging sheet material |
US6471122B1 (en) | 1999-02-13 | 2002-10-29 | Stone Container Corporation | Paperboard can with an integrated paperboard lid having a slide closure |
US6349866B1 (en) | 1999-02-13 | 2002-02-26 | Stone Container Corporation | Paperboard can with an integrated paperboard lid having a hinge on the lid |
US6131804A (en) * | 1999-02-23 | 2000-10-17 | Rexam Plastics Inc. | Reclosable fitment with pull off liner film |
US20020179605A1 (en) * | 2001-05-29 | 2002-12-05 | Claudia Miani | Closable opening device for sealed packages of pourable food products |
US6820764B2 (en) | 2001-05-29 | 2004-11-23 | Tetra Laval Holdings & 'finance Sa | Closable opening device for sealed packages of pourable food products |
US20050236425A1 (en) * | 2002-09-09 | 2005-10-27 | Tetra Laval Holdings & Finance S.A. | Closable opening device for packages of pourable food products |
US7484641B2 (en) | 2002-09-09 | 2009-02-03 | Tetra Laval Holdings & Finance S.A. | Closable opening device for packages of pourable food products |
US20040108371A1 (en) * | 2002-12-06 | 2004-06-10 | Tetra Laval Holdings & Finance S.A. | Opening arrangement, packaging and method of providing a packaging with an opening arrangement |
US20050101466A1 (en) * | 2002-12-06 | 2005-05-12 | Tetra Laval Holdings & Finance Sa | Opening arrangement, packaging and method of providing a packaging with an opening arrangement |
US7191931B2 (en) | 2002-12-06 | 2007-03-20 | Tetra Laval Holdings & Finance S.A. | Opening arrangement, packaging and method of providing a packaging with an opening arrangement |
US20040146618A1 (en) * | 2003-01-24 | 2004-07-29 | Stewart Noel G. | Perforated air-tight seal membrane for a canister containing a particulate-type product |
Also Published As
Publication number | Publication date |
---|---|
JPS49112792A (de) | 1974-10-28 |
AR197662A1 (es) | 1974-04-23 |
SU532335A3 (ru) | 1976-10-15 |
NL7402058A (de) | 1974-08-22 |
DE2407345A1 (de) | 1974-09-05 |
DE2460705C3 (de) | 1978-06-01 |
CH562135A5 (de) | 1975-05-30 |
AU6553974A (en) | 1975-08-14 |
FR2218253A1 (de) | 1974-09-13 |
JPS5414996B2 (de) | 1979-06-11 |
NL175507C (nl) | 1984-11-16 |
NL175507B (nl) | 1984-06-18 |
DE2460705B2 (de) | 1977-10-06 |
DE2407345B2 (de) | 1976-08-19 |
DE2460705A1 (de) | 1975-04-30 |
IT1008281B (it) | 1976-11-10 |
FR2218253B1 (de) | 1979-06-01 |
CA1002470A (en) | 1976-12-28 |
GB1436969A (en) | 1976-05-26 |
SE394643B (sv) | 1977-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AKTIEBOLAGET TETRA PAK Free format text: CHANGE OF NAME;ASSIGNOR:TETRA PAK INTERNATIONAL AKTIEBOLAG;REEL/FRAME:005150/0367 Effective date: 19870831 |