CA1049427A - Opening arrangement for a package - Google Patents
Opening arrangement for a packageInfo
- Publication number
- CA1049427A CA1049427A CA251,545A CA251545A CA1049427A CA 1049427 A CA1049427 A CA 1049427A CA 251545 A CA251545 A CA 251545A CA 1049427 A CA1049427 A CA 1049427A
- Authority
- CA
- Canada
- Prior art keywords
- pouring opening
- cover strip
- opening
- area
- arrangement
- 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
Links
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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Closures For Containers (AREA)
- Cartons (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides an opening arrangement for a package of the type which is provided with a pouring opening located in a preferably plane surface, which opening arrangement comprises a cover strip applied over the pouring opening as well as the surrounding area, the area of the cover strip covering the pouring opening having two or more recessed zones which are situated close to parts of the periphery of the pouring opening and are shaped to extend partly underneath the material edge surrounding the pouring opening.
The present invention provides an opening arrangement for a package of the type which is provided with a pouring opening located in a preferably plane surface, which opening arrangement comprises a cover strip applied over the pouring opening as well as the surrounding area, the area of the cover strip covering the pouring opening having two or more recessed zones which are situated close to parts of the periphery of the pouring opening and are shaped to extend partly underneath the material edge surrounding the pouring opening.
Description
1~499~2~
The present invention relates to an opening arrangement for a package of the type which is provided with a pouring opening located in a preferably plane sur:Eace, which opening arrangement comprises a cover strip applied over the pouring opening, which covers the pouring opening as well as the surrounding area.
In the packing of liquid foods, e.g. milk,disposable packages of a laminated material are beingused more and more frequently. These packages are provided with different types of opening arrangements, for example tearing directions or ; holes punched out in the package, which are covered by a tear-o~f cover strip.
Such an opening arrangement comprises a hole located in the upper surface of the package, which is covered with a cover strip which covers the pouring opening as well as the surrounding area. The cover strip is formed from a -thermoplastic material, e.g. polyvinyl chloride and the part which covers the pouring opening has been given by thermoforming, an inwardly curving position, such that it extends past the inside edge of the pouring opening, this inwardly curved part having been given a cross-sectional area parallelwith the pouring opening, which is greater than the area of the pouring opening.
By such shape of the cover strip a snap or press button effect is obtained, which make re-closing of the pouring opening by means of the cover strip possible. The recessed area of the cover strip gives the cover strip a profiled cross-section which provides greater rigidity in the cover strip and makes the same more difficult -to bendO This is a disadvantage in the manufacture of packages provided with such cover strips, since the material used for such packages is provid~d with pouring ~ holes as well as with cover strips at an early stage in the ; manufacture of the packages. The material provided with cover ~ ~,1 jf - 1 - ~
~6~149~7 strips passes in the packaging machine along a fairly irregular track over guide rollers and -the like before it is formed to individual packages, and during this procedure -there are considerable risks that the applied rigid cover strips may crack or come loose. The relatively high rigidity of the cover strip is also a disadvantage when the packages are to be opened, since the recessed area is easily cracked during the tearing of~
from the packages, which makes difficult, and in some cases may render impossible, a sa-tisfactory re-closure of the pouring opening.
The present invention provides an opening arrangement of the type mentioned which is not subject to the disadvantages of the opening arrangements known previously and which is pliable and has good re-closability without as a result becoming more complicated or more expensive to manufacture than the known opening arrangement described above.
In accordance with the present invention there is provided an opening arrangement of the type heretofore described ` in which the area of the cover strip covering the pouring opening has two or more recessed zones which are situated close to parts of the periphery of the pouring opening and are shaped so that they extend partly underneath the material edge surrounding the pouring opening.
According to the present invention therefore there is provided an opening arrangement for a package of the type which is provided with a pouring opening located in a surface of the packing material forming the package, said opening arrangement comprising a cover strip disposed on the outside of the packing material o~erthe pouring opening which covers the pouring opening as well as the surrounding area, the area of the cover strip ~' covering the pouring opening having at least two recessed zones which are situated close to the periphery of the pouring opening ::
The present invention relates to an opening arrangement for a package of the type which is provided with a pouring opening located in a preferably plane sur:Eace, which opening arrangement comprises a cover strip applied over the pouring opening, which covers the pouring opening as well as the surrounding area.
In the packing of liquid foods, e.g. milk,disposable packages of a laminated material are beingused more and more frequently. These packages are provided with different types of opening arrangements, for example tearing directions or ; holes punched out in the package, which are covered by a tear-o~f cover strip.
Such an opening arrangement comprises a hole located in the upper surface of the package, which is covered with a cover strip which covers the pouring opening as well as the surrounding area. The cover strip is formed from a -thermoplastic material, e.g. polyvinyl chloride and the part which covers the pouring opening has been given by thermoforming, an inwardly curving position, such that it extends past the inside edge of the pouring opening, this inwardly curved part having been given a cross-sectional area parallelwith the pouring opening, which is greater than the area of the pouring opening.
By such shape of the cover strip a snap or press button effect is obtained, which make re-closing of the pouring opening by means of the cover strip possible. The recessed area of the cover strip gives the cover strip a profiled cross-section which provides greater rigidity in the cover strip and makes the same more difficult -to bendO This is a disadvantage in the manufacture of packages provided with such cover strips, since the material used for such packages is provid~d with pouring ~ holes as well as with cover strips at an early stage in the ; manufacture of the packages. The material provided with cover ~ ~,1 jf - 1 - ~
~6~149~7 strips passes in the packaging machine along a fairly irregular track over guide rollers and -the like before it is formed to individual packages, and during this procedure -there are considerable risks that the applied rigid cover strips may crack or come loose. The relatively high rigidity of the cover strip is also a disadvantage when the packages are to be opened, since the recessed area is easily cracked during the tearing of~
from the packages, which makes difficult, and in some cases may render impossible, a sa-tisfactory re-closure of the pouring opening.
The present invention provides an opening arrangement of the type mentioned which is not subject to the disadvantages of the opening arrangements known previously and which is pliable and has good re-closability without as a result becoming more complicated or more expensive to manufacture than the known opening arrangement described above.
In accordance with the present invention there is provided an opening arrangement of the type heretofore described ` in which the area of the cover strip covering the pouring opening has two or more recessed zones which are situated close to parts of the periphery of the pouring opening and are shaped so that they extend partly underneath the material edge surrounding the pouring opening.
According to the present invention therefore there is provided an opening arrangement for a package of the type which is provided with a pouring opening located in a surface of the packing material forming the package, said opening arrangement comprising a cover strip disposed on the outside of the packing material o~erthe pouring opening which covers the pouring opening as well as the surrounding area, the area of the cover strip ~' covering the pouring opening having at least two recessed zones which are situated close to the periphery of the pouring opening ::
- 2 -9 ~rA~S~t and are shaped to extend partly underneath the edge defining the pouring opening. Suitably the cover strip is disposed on an elongated or oval pouring opening in a preferably plane surface of the package and has at each end of the area covering the pouring opening a recessed zone. Suitably the cover strip is made of a thermoformable material.
In one embodiment of the present invention the area of the cover strip covering the pouring opening is connected with an impervious material layer, which is sealed to an area on the 10 inside of the packing material surrounding the pouring opening.
Desirably the impervious material layer is sealed to the inside of the packing material in a ring-shaped area, which extends around the pouring opening at a small distance therefrom.
Suitably the impervious material layer is made of polyethylene.
The present invention will be further described by way of the accompanying schematic drawing in which;
; Fig. 1 is a perspective of the upper part of a packing container with an opening arrangement in accordance with one embod-iment of the invention, and Fig. 2 is a vertical section of part of the package according to Fig. 1 provided with pouring opening and cover strip.
The package 1 shown on the drawing is parallelepipedic and is manufactured from a laminated material 2, which comprises a carrier layer of paper and layers of thermoplastic material on both sides thereof (not shown). The laminated packing material 2 may also comprise layers of e.g. aluminium foil or foamed ; plastic material. The packing container 1 has a substantially plane sur~ace 3, in which an oval pouring opening 4 is punched out. The pouring opening 4 is covered by a cover strip 5, which 30 also covers the portion of the upper surface 3 of the package adjacent and around the pouring opening 4. A part of the cover strip 5 extends beyond the said surface to form there a pull-tab 6.
,~.. ~. :
10~9~2~ :
The part of -the cover strip 5 covering the pouring opening 4 is connected on its side facing the inside of the packing container 1 with an impervious material layer 7, which is also sealed to the area on the inside of the packing material which surrounds the pouring opening 4.
The area of the cover strip 5 covering the pouring opening 4 has two recessed zones 8, each of which ls situated at one end of the oval pouring opening ancl close to the peripheral edge thereof. The zones 8 are shaped to extend partially under-neath this edge. In particular, each of the zones 8 is in the formo a crescent-shaped recess, whose semicircular peripheral part to the greater part has a depth which somewhat exceeds the thickness of the packing material 2, whilst the linear peripheral part is in the same horizontal plane as the main part of the cover strip 5, that is to say, that part of th~e cover strip 5 which rests on the upper surface 3 of the package 1. On the part of - each zone 8 which extends farthest down towards the centre of the package a lip-shaped element 9 is present which embraces the edge of the pouring opening 4 and rests against the inside of the packing material 2.
The impervious material layer 7, which may consist, for example, of hot-melt coated polyethylene is sealed to the ' inside of the packing material 2 in a ring-shaped area which extends around the pouring opening 4 at a distance therefrom.
The material layer 7 is however not sealed to the inside of the packing material in the area situated directly adjoining the peripheral edge of the pouring opening 4, which makes it possible for the lip-shaped element 9 to extend partially in ~ ;
between the back of the packing material and the material layer 7.
`~ 30 The opening arrangement in accordance with the present invention is conventionally applied to the packing material 2 whilst the material is in form of a web. In the packing material .
1~9~Z'7 web pouring openings ~ are punched out at equal intervals, whereafter the area around these openings 4 is heated up by means of e.g. hot air. As the feed of -the web progresses the pouring openings are covered by means of strips of e.g. hot-melt coated polyethylene, which is cut off in the required length from strip-shaped material and is applied to the back of the packing material over the pouring openings so as to form there the said impervious layer 7. Directly after this the application of the cover strip 5 takes place, which is also cut off from strip-shaped material, e.g. acryloplastic. The cover strip 5 is retained in flat shape and is deep-drawn after application over the pouring hole, as a result of which the cover strip as well as the strip forming the impervious layer 7 are given the desired shape and are joined to one another. The moulding of the strips, which are both made of thermoformable material, is effected by placing a suitably shaped mould against the back of the packing material underneath the pouring opening, whereupon the strips are pressed down by means of compressed air into the recesses of the mould.
By substituting the recessed area covering the whole of the pouring opening in conventional opening arrangements, ` with the two zones 8 situated at a distance from one another ^~ in accordance with the present invention, the cover s-trip 5 has a flexibility and pliancy which allows the rolling up of the packing material 2 provided with cover strips5 without the cover strips cracking or being damaged. This advantage is especially noticeable in the case where the pouring opening consists of an oblong or oval hole, which is often the case, since an oblong hole during emptying of the package allows the intake of air into the package whilst the contents are poured, thus imparting good pouring characteristics. When such long pouring openings were closed with cover strips of the conventional _ .,~'-~, ' r - . . .. . ... .
~4~
type, the cover strip occasionally cracked when the consumer opened the package, so that an effective re-closing of the package was rendered difficult or impossible. These disadvantages are eliminated by the cover strip in accordance with the present invention, since this, due to its two-part recessing possesses great pliability and allows strong bending also in transverse direction over the elongated area covering the pouring opening.
Instead of applying the impervious layer 7 to the back, it is of course also possible to fix and tighten the cover strip 5 directly to the upper side of the packing material or to the edges of the pouring opening ~, which in certain cases may prove advantageous.
In the conventional cover strip the formation of the large recessed area also entailed the formation of a marked waist onthe cover strip just in the area covering the pouring opening, since the relatively large amount of material required for the recessing led to a pulling in of the edgesof the material strip. This disadvantage is also eliminated, since in the cover strip in accordance withthe present invention the amount of material required for the formation of the two recessed zones 8 is considerably less. Furthermore, due to the special slope of the recessed zones 8 and the gradual transition of the edge, from maximum depth in the central area of the semicircular part of the periphery to the plane surfaces in the linear part of the periphery of the recesses, a control of the direction in which the material required for the recesses is pulled has been achieved. The cover strip of the present invention thus results ~ in a pulling in longitudinal direction of the strip, which ; effectively prevents the formation of a waist on the strip.
' ;~ ' ~ .
In one embodiment of the present invention the area of the cover strip covering the pouring opening is connected with an impervious material layer, which is sealed to an area on the 10 inside of the packing material surrounding the pouring opening.
Desirably the impervious material layer is sealed to the inside of the packing material in a ring-shaped area, which extends around the pouring opening at a small distance therefrom.
Suitably the impervious material layer is made of polyethylene.
The present invention will be further described by way of the accompanying schematic drawing in which;
; Fig. 1 is a perspective of the upper part of a packing container with an opening arrangement in accordance with one embod-iment of the invention, and Fig. 2 is a vertical section of part of the package according to Fig. 1 provided with pouring opening and cover strip.
The package 1 shown on the drawing is parallelepipedic and is manufactured from a laminated material 2, which comprises a carrier layer of paper and layers of thermoplastic material on both sides thereof (not shown). The laminated packing material 2 may also comprise layers of e.g. aluminium foil or foamed ; plastic material. The packing container 1 has a substantially plane sur~ace 3, in which an oval pouring opening 4 is punched out. The pouring opening 4 is covered by a cover strip 5, which 30 also covers the portion of the upper surface 3 of the package adjacent and around the pouring opening 4. A part of the cover strip 5 extends beyond the said surface to form there a pull-tab 6.
,~.. ~. :
10~9~2~ :
The part of -the cover strip 5 covering the pouring opening 4 is connected on its side facing the inside of the packing container 1 with an impervious material layer 7, which is also sealed to the area on the inside of the packing material which surrounds the pouring opening 4.
The area of the cover strip 5 covering the pouring opening 4 has two recessed zones 8, each of which ls situated at one end of the oval pouring opening ancl close to the peripheral edge thereof. The zones 8 are shaped to extend partially under-neath this edge. In particular, each of the zones 8 is in the formo a crescent-shaped recess, whose semicircular peripheral part to the greater part has a depth which somewhat exceeds the thickness of the packing material 2, whilst the linear peripheral part is in the same horizontal plane as the main part of the cover strip 5, that is to say, that part of th~e cover strip 5 which rests on the upper surface 3 of the package 1. On the part of - each zone 8 which extends farthest down towards the centre of the package a lip-shaped element 9 is present which embraces the edge of the pouring opening 4 and rests against the inside of the packing material 2.
The impervious material layer 7, which may consist, for example, of hot-melt coated polyethylene is sealed to the ' inside of the packing material 2 in a ring-shaped area which extends around the pouring opening 4 at a distance therefrom.
The material layer 7 is however not sealed to the inside of the packing material in the area situated directly adjoining the peripheral edge of the pouring opening 4, which makes it possible for the lip-shaped element 9 to extend partially in ~ ;
between the back of the packing material and the material layer 7.
`~ 30 The opening arrangement in accordance with the present invention is conventionally applied to the packing material 2 whilst the material is in form of a web. In the packing material .
1~9~Z'7 web pouring openings ~ are punched out at equal intervals, whereafter the area around these openings 4 is heated up by means of e.g. hot air. As the feed of -the web progresses the pouring openings are covered by means of strips of e.g. hot-melt coated polyethylene, which is cut off in the required length from strip-shaped material and is applied to the back of the packing material over the pouring openings so as to form there the said impervious layer 7. Directly after this the application of the cover strip 5 takes place, which is also cut off from strip-shaped material, e.g. acryloplastic. The cover strip 5 is retained in flat shape and is deep-drawn after application over the pouring hole, as a result of which the cover strip as well as the strip forming the impervious layer 7 are given the desired shape and are joined to one another. The moulding of the strips, which are both made of thermoformable material, is effected by placing a suitably shaped mould against the back of the packing material underneath the pouring opening, whereupon the strips are pressed down by means of compressed air into the recesses of the mould.
By substituting the recessed area covering the whole of the pouring opening in conventional opening arrangements, ` with the two zones 8 situated at a distance from one another ^~ in accordance with the present invention, the cover s-trip 5 has a flexibility and pliancy which allows the rolling up of the packing material 2 provided with cover strips5 without the cover strips cracking or being damaged. This advantage is especially noticeable in the case where the pouring opening consists of an oblong or oval hole, which is often the case, since an oblong hole during emptying of the package allows the intake of air into the package whilst the contents are poured, thus imparting good pouring characteristics. When such long pouring openings were closed with cover strips of the conventional _ .,~'-~, ' r - . . .. . ... .
~4~
type, the cover strip occasionally cracked when the consumer opened the package, so that an effective re-closing of the package was rendered difficult or impossible. These disadvantages are eliminated by the cover strip in accordance with the present invention, since this, due to its two-part recessing possesses great pliability and allows strong bending also in transverse direction over the elongated area covering the pouring opening.
Instead of applying the impervious layer 7 to the back, it is of course also possible to fix and tighten the cover strip 5 directly to the upper side of the packing material or to the edges of the pouring opening ~, which in certain cases may prove advantageous.
In the conventional cover strip the formation of the large recessed area also entailed the formation of a marked waist onthe cover strip just in the area covering the pouring opening, since the relatively large amount of material required for the recessing led to a pulling in of the edgesof the material strip. This disadvantage is also eliminated, since in the cover strip in accordance withthe present invention the amount of material required for the formation of the two recessed zones 8 is considerably less. Furthermore, due to the special slope of the recessed zones 8 and the gradual transition of the edge, from maximum depth in the central area of the semicircular part of the periphery to the plane surfaces in the linear part of the periphery of the recesses, a control of the direction in which the material required for the recesses is pulled has been achieved. The cover strip of the present invention thus results ~ in a pulling in longitudinal direction of the strip, which ; effectively prevents the formation of a waist on the strip.
' ;~ ' ~ .
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An opening arrangement for a package of the type which is provided with a pouring opening located in a surface of the packing material forming the package, said opening arrangement comprising a cover strip disposed on the outside of the packing material over the pouring opening which covers the pouring opening as well as the surrounding area, the area of the cover strip covering the pouring opening having at least two recessed zones which are situated close to the periphery of the pouring opening and are shaped to extend partly underneath the edge defining the pouring opening.
2. An arrangement as claimed in claim 1 in which the pouring opening is located in a plane surface.
3. An arrangement in accordance with claim 2, in which the cover strip is disposed on an oval or elongated pouring opening and has at each end of the area covering the pouring opening a recessed zone.
4. An arrangement in accordance with claim 2 in which the area of the cover strip covering the pouring opening is connected with an impervious material layer, which is sealed to an area on the inside of the packing material surrounding the pouring opening.
5. An arrangement in accordance with claim 4, in which the impervious material layer is sealed to the inside of the packing material in a ring-shaped area, which extends around the pouring opening at a small distance therefrom.
6. An arrangement in accordance with claim 4 or 5 in which the impervious material layer is made of polyethylene.
7. An arrangement in accordance with claim 1, 2 or 3 in which that the cover strip is made of a thermoformable material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7505123A SE398479B (en) | 1975-05-02 | 1975-05-02 | OPENING DEVICE FOR PACKAGING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1049427A true CA1049427A (en) | 1979-02-27 |
Family
ID=20324482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,545A Expired CA1049427A (en) | 1975-05-02 | 1976-04-30 | Opening arrangement for a package |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS52582A (en) |
| CA (1) | CA1049427A (en) |
| DE (1) | DE2619282C3 (en) |
| FR (1) | FR2309426A1 (en) |
| GB (1) | GB1498315A (en) |
| IT (1) | IT1062101B (en) |
| SE (1) | SE398479B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2170479B (en) * | 1985-02-05 | 1988-09-28 | Tetra Pak Int | A pack for liquids |
| JPH0344067A (en) * | 1989-07-11 | 1991-02-25 | Nec Corp | Laminating method of semiconductor substrate |
| DE29622030U1 (en) * | 1996-12-18 | 1997-02-13 | Fina Research | Termination device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5040650B1 (en) * | 1970-12-28 | 1975-12-25 |
-
1975
- 1975-05-02 SE SE7505123A patent/SE398479B/en not_active IP Right Cessation
-
1976
- 1976-04-27 GB GB1702676A patent/GB1498315A/en not_active Expired
- 1976-04-29 FR FR7612682A patent/FR2309426A1/en active Granted
- 1976-04-30 CA CA251,545A patent/CA1049427A/en not_active Expired
- 1976-04-30 JP JP4980376A patent/JPS52582A/en active Pending
- 1976-04-30 IT IT2289776A patent/IT1062101B/en active
- 1976-04-30 DE DE2619282A patent/DE2619282C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE7505123L (en) | 1976-11-03 |
| DE2619282A1 (en) | 1976-11-11 |
| IT1062101B (en) | 1983-06-25 |
| FR2309426A1 (en) | 1976-11-26 |
| DE2619282B2 (en) | 1979-12-13 |
| JPS52582A (en) | 1977-01-05 |
| DE2619282C3 (en) | 1980-08-21 |
| FR2309426B1 (en) | 1981-11-27 |
| GB1498315A (en) | 1978-01-18 |
| SE398479B (en) | 1977-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4113103A (en) | Opening arrangement for packing containers | |
| US4595116A (en) | Opening arrangement for packing containers and a method for the manufacture of the same | |
| US4267937A (en) | Tear opening device for containers | |
| US4765463A (en) | Display-tray constituting a package | |
| US4819839A (en) | Opening arrangement on packing containers | |
| EP0435638B1 (en) | Easily openable sealed container and process for producing the same | |
| EP1861322B1 (en) | Self-venting cover for heatable food package | |
| JP4157130B2 (en) | Containers with rims or other features encapsulated by or molded from injection molding material | |
| US3083876A (en) | Pre-perforated material for packages and method of making same | |
| US4702377A (en) | Tray for receiving foodstuffs and a process and apparatus for producing it | |
| US2795366A (en) | Dual purpose pull strip | |
| US4730769A (en) | Packaging for liquids and process and apparatus for its manufacture | |
| US4433784A (en) | Arrangement on packing containers | |
| US4792069A (en) | Pouring edge on packing containers | |
| US4080235A (en) | Method for providing a laminate web with a firm edge strip | |
| CA1049427A (en) | Opening arrangement for a package | |
| EP0896931B1 (en) | Container with opening feature | |
| US4285430A (en) | Skin package | |
| US4544093A (en) | Edge-bonding of sheet material | |
| US5058760A (en) | Easy-open package and method of making same | |
| US4921121A (en) | End closure for a packaging container | |
| US4165004A (en) | Inward embossed panel adjacent to punched pour hole in top end unit | |
| US5322214A (en) | Opening arrangement for a packaging container | |
| SU1386026A3 (en) | Packing container | |
| US3416716A (en) | Container opening device comprising a slot and a strip passing through it |