CA2593841A1 - Packaging pouch - Google Patents
Packaging pouch Download PDFInfo
- Publication number
- CA2593841A1 CA2593841A1 CA002593841A CA2593841A CA2593841A1 CA 2593841 A1 CA2593841 A1 CA 2593841A1 CA 002593841 A CA002593841 A CA 002593841A CA 2593841 A CA2593841 A CA 2593841A CA 2593841 A1 CA2593841 A1 CA 2593841A1
- Authority
- CA
- Canada
- Prior art keywords
- sealing
- seam
- pouch
- bond strength
- region
- 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.)
- Abandoned
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000001747 exhibiting effect Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 239000005020 polyethylene terephthalate Substances 0.000 description 8
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 3
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 235000019568 aromas Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- IKZZIQXKLWDPCD-UHFFFAOYSA-N but-1-en-2-ol Chemical compound CCC(O)=C IKZZIQXKLWDPCD-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/008—Standing pouches, i.e. "Standbeutel"
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/76—Making non-permanent or releasable joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72324—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of inorganic materials not provided for in B29C66/72321 - B29C66/72322
- B29C66/72325—Ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7128—Bags, sacks, sachets
Abstract
A packaging pouch (10) made from a flexible film material and having at least one sealing zone arranged along a pouch edge and an outer sealing seam (18) as permanent closure element is such that, in order to increase the shock--absorbing capacity of the sealing zone, a region (22) of the sealing zone bordering the interior (20) of the pouch exhibits lower bond strength than that of the outer sealing seam (18).
Description
Packaging Pouch The invention relates to a pouch for packaging purposes made from a flexible film-type material and having at least one sealing zone arranged along an edge of the pouch and an outer sealing seam as a permanent means of closure.
Goods required for daily use are often packaged in pouches. A classic pouch-system is the free-standing pouch or the "Doy-Pack" type of pouch. Depending on the contents and the requirements, the layers of material may be two to four main layers.
Typical layer arrangements in packaging laminates for the manufacture of pouches for liquid, liquid/particulate-solid and pasty type contents having a long shelf-life of more than thirty days are e.g.
PET / aluminium / oPA / PE (or PP) PET / vacuum coated barriers / oPA / PE (or PP) PET / vacuum coated barriers / PET / PE (or PP) PET / PE :EVOH:PE (or PP:EVOH:PP) The combination of different layers produces the desired properties. PET
(polyethylene-terephthalate) is thermal resistant, produces a shiny surface and can be readily printed on, oPA (oriented polyamide) produces a high resistance to penetration and resistance to failure due to bending, an aluminium foil, vacuum coating with SiO,, or a layer of EVOH (ethyl-vinyl-alcohol) as barrier layer increases the resistance to the passage of water vapour, oxygen and other gases as well as undesirably aromas. The thickness of the various individual layers varies, depending on the specific application. Typical film thicknesses are: PET 12 pm, aluminium 8 - 12 pm, oPA 12 - 15 pm, PE and PP 50 - 150 pm. The films or foils are typically bonded together by means of polyurethane adhesives.
Goods required for daily use are often packaged in pouches. A classic pouch-system is the free-standing pouch or the "Doy-Pack" type of pouch. Depending on the contents and the requirements, the layers of material may be two to four main layers.
Typical layer arrangements in packaging laminates for the manufacture of pouches for liquid, liquid/particulate-solid and pasty type contents having a long shelf-life of more than thirty days are e.g.
PET / aluminium / oPA / PE (or PP) PET / vacuum coated barriers / oPA / PE (or PP) PET / vacuum coated barriers / PET / PE (or PP) PET / PE :EVOH:PE (or PP:EVOH:PP) The combination of different layers produces the desired properties. PET
(polyethylene-terephthalate) is thermal resistant, produces a shiny surface and can be readily printed on, oPA (oriented polyamide) produces a high resistance to penetration and resistance to failure due to bending, an aluminium foil, vacuum coating with SiO,, or a layer of EVOH (ethyl-vinyl-alcohol) as barrier layer increases the resistance to the passage of water vapour, oxygen and other gases as well as undesirably aromas. The thickness of the various individual layers varies, depending on the specific application. Typical film thicknesses are: PET 12 pm, aluminium 8 - 12 pm, oPA 12 - 15 pm, PE and PP 50 - 150 pm. The films or foils are typically bonded together by means of polyurethane adhesives.
Apart from the different properties, the combination of layers also produces the required toughness at the sealing joint, which gives the finished pouch its shape. This prevents the pouch from bursting open if dropped, which would make the contents unusable.
The production of the above mentioned arrangement of layers is relatively complex. There is therefore the desire to have layers that are easier to manu-facture, that are cost-favourable and to have fewer layers e.g. laminates having only two main layers. The materials employed must combine different properties, in particular however prevent the finished pouch from tearing open along the sealing seam if dropped several times.
The object of the present invention is to improve the shock-absorbing capacity of the sealing seam in a packaging pouch of the kind mentioned at the start.
That objective is achieved by way of the invention in that, in order to increase the shock-absorbing capacity, a region of the sealing zone bordering the interior of the pouch exhibits lower bond strength than the bond strength of the outer part of the sealing seam.
The essence of the invention lies in the placement of an additional sealing area which, when a pouch is dropped, absorbs the energy acting on the sealing zone of the pouch or reduces this to such an extent that the outer sealing seam is not impaired. A tear which, when a pouch is dropped, starts in the region of the seam that precedes the outer sealing seam and has the lowest bond strength, is arrested by plastic deformation taking up the kinetic energy running into the sealing zone i.e. before the tear reaches the outer sealing seam.
The region of the sealing seam bordering the interior of the pouch may e.g.
exhibit an inner sealing seam having lower bond strength than that of the outer sealing seam.
The production of the above mentioned arrangement of layers is relatively complex. There is therefore the desire to have layers that are easier to manu-facture, that are cost-favourable and to have fewer layers e.g. laminates having only two main layers. The materials employed must combine different properties, in particular however prevent the finished pouch from tearing open along the sealing seam if dropped several times.
The object of the present invention is to improve the shock-absorbing capacity of the sealing seam in a packaging pouch of the kind mentioned at the start.
That objective is achieved by way of the invention in that, in order to increase the shock-absorbing capacity, a region of the sealing zone bordering the interior of the pouch exhibits lower bond strength than the bond strength of the outer part of the sealing seam.
The essence of the invention lies in the placement of an additional sealing area which, when a pouch is dropped, absorbs the energy acting on the sealing zone of the pouch or reduces this to such an extent that the outer sealing seam is not impaired. A tear which, when a pouch is dropped, starts in the region of the seam that precedes the outer sealing seam and has the lowest bond strength, is arrested by plastic deformation taking up the kinetic energy running into the sealing zone i.e. before the tear reaches the outer sealing seam.
The region of the sealing seam bordering the interior of the pouch may e.g.
exhibit an inner sealing seam having lower bond strength than that of the outer sealing seam.
The region of sealing zone bordering the interior of the pouch may also exhibit a plurality of sealing areas that are spaced apart and exhibit the same or lower bond strength than that of the outer sealing seam. Thereby, the sealing areas that are spaced apart may exhibit geometric figures that are surrounded on all sides by seal-free regions or form a geometric pattern.
The sealing areas that are spaced apart from each other may also be strips that project from an inner edge of the outer seam, or strips that project from an inner edge of the outer sealing seam and are delimited by inward projecting seal-free regions.
The region of sealing zone bordering the inner part of the pouch and exhibiting lower bond strength than that of the outer sealing seam may extend the whole length or may run only over one or more parts of the length of the outer sealing seam.
Further advantages, features and details of the invention are revealed in the following description of preferred exemplified embodiments of the invention and with the aid of the drawing which shows schematically in - Fig. I a side view of a free-standing pouch with outer and inner sealing seam;
- Fig. 2 the side view of the free-standing pouch shown in Fig. 1, having outer sealing seam and sealing areas that are spaced apart;
A packaging pouch 10 in the form of a free-standing pouch shown in Fig. 1 features a front wall 12, a rear wall 14 and a sealed on base 16. A
circumferential sealing seam 18 of elevated bond strength hermetically seals an inner volume 20 delimited by a front wall 12, rear wall 14 and base 16.
An inner sealing seam 22 having lower bond strength than that of the outer sealing seam 18 borders on one side to the region 20 for holding the contents and on the other side to the inner edge 19 of the outer seam 18 and extends over the whole length of the outer seam 18.
A tear arising when the pouch is dropped begins at the inner seam and is arrested there due to the absorption of energy. The bond strength of the inner seam 22 may e.g. be selected such that separation of the inner seam 22 takes place by peeling.
As shown in Fig. 2, reduced bond strength at the inner side of the outer seam 18 may be achieved by the sealing in this region being achieved by a plurality of sealing areas that are separated from each other i.e. instead of by a seam covering the whole area.
The sealing areas shown by way of example in a first version comprise geometric elements e.g. triangles 24 which are surrounded by seal-free regions.
In a second version shown here, the sealing areas are arranged spaced apart in the form of strips 26 projecting out from the inner edge 19 of the outer seam towards the interior 20 of the pouch.
In a third version shown here the sealing areas are in the form of strips 30 projecting from the inner edge of the outer seam 18 that are arranged spaced apart and are delimited by seal-free regions 28.
The sealing areas that are spaced apart from each other may also be strips that project from an inner edge of the outer seam, or strips that project from an inner edge of the outer sealing seam and are delimited by inward projecting seal-free regions.
The region of sealing zone bordering the inner part of the pouch and exhibiting lower bond strength than that of the outer sealing seam may extend the whole length or may run only over one or more parts of the length of the outer sealing seam.
Further advantages, features and details of the invention are revealed in the following description of preferred exemplified embodiments of the invention and with the aid of the drawing which shows schematically in - Fig. I a side view of a free-standing pouch with outer and inner sealing seam;
- Fig. 2 the side view of the free-standing pouch shown in Fig. 1, having outer sealing seam and sealing areas that are spaced apart;
A packaging pouch 10 in the form of a free-standing pouch shown in Fig. 1 features a front wall 12, a rear wall 14 and a sealed on base 16. A
circumferential sealing seam 18 of elevated bond strength hermetically seals an inner volume 20 delimited by a front wall 12, rear wall 14 and base 16.
An inner sealing seam 22 having lower bond strength than that of the outer sealing seam 18 borders on one side to the region 20 for holding the contents and on the other side to the inner edge 19 of the outer seam 18 and extends over the whole length of the outer seam 18.
A tear arising when the pouch is dropped begins at the inner seam and is arrested there due to the absorption of energy. The bond strength of the inner seam 22 may e.g. be selected such that separation of the inner seam 22 takes place by peeling.
As shown in Fig. 2, reduced bond strength at the inner side of the outer seam 18 may be achieved by the sealing in this region being achieved by a plurality of sealing areas that are separated from each other i.e. instead of by a seam covering the whole area.
The sealing areas shown by way of example in a first version comprise geometric elements e.g. triangles 24 which are surrounded by seal-free regions.
In a second version shown here, the sealing areas are arranged spaced apart in the form of strips 26 projecting out from the inner edge 19 of the outer seam towards the interior 20 of the pouch.
In a third version shown here the sealing areas are in the form of strips 30 projecting from the inner edge of the outer seam 18 that are arranged spaced apart and are delimited by seal-free regions 28.
Claims (3)
1. Packaging pouch made from a flexible film material having at least one sealing zone arranged along a pouch edge and an outer sealing seam 18 as permanent sealing element, characterised in that, in order to increase the capacity of the sealing zone to absorb shock, a region of the sealing zone bordering the inner part (20) of the pouch exhibits lower bond strength than that of the sealing seam (18).
2. Packaging pouch according to claim 1, characterised in that the region of the sealing zone bordering the inner part of the pouch is a sealing seam (22) having lower bond strength than that of the outer seam (18).
3. Packaging pouch according to claim 1, characterised in that the region of the sealing zone bordering the inner part of the pouch exhibits a plurality of sealing areas (24, 26, 30) spaced apart from each other and has the same or lower bond strength than that of the outer seam (18).
3. Packaging pouch according to claim 3, characterised in that the sealing areas that are spaced apart from each other, exhibit geometric elements (24) surrounded on all sides by seal-free regions.
5. Packaging pouch according to claim 3, characterised in that the sealing areas that are spaced apart from each other form a geometric pattern.
6. Packaging pouch according to claim 3, characterised in that the sealing areas that are spaced apart from each other are strips (26) that project out from an inner edge (19) of the outer seam (18) towards the interior of the pouch.
7. Packaging pouch according to claim 3, characterised in that sealing areas that are spaced apart from each other are strips (30) that project from an inner edge (19) of the outer seam (18) and are delimited by inward projecting seal-free regions (28).
8. Packaging pouch according to one of the claims 1 to 7, characterised in that the region of sealing zone, bordering the interior of the pouch and exhibiting lower bond strength than that of the outer seam (18), runs the whole length of the outer sealing seam (18).
9. Packaging pouch according to one of the claims 1 to 7, characterised in that the region of sealing zone, bordering the interior of the pouch and exhibiting lower bond strength than that of the outer sealing seam (18), runs over at least part of the length of the outer sealing seam (18).
3. Packaging pouch according to claim 3, characterised in that the sealing areas that are spaced apart from each other, exhibit geometric elements (24) surrounded on all sides by seal-free regions.
5. Packaging pouch according to claim 3, characterised in that the sealing areas that are spaced apart from each other form a geometric pattern.
6. Packaging pouch according to claim 3, characterised in that the sealing areas that are spaced apart from each other are strips (26) that project out from an inner edge (19) of the outer seam (18) towards the interior of the pouch.
7. Packaging pouch according to claim 3, characterised in that sealing areas that are spaced apart from each other are strips (30) that project from an inner edge (19) of the outer seam (18) and are delimited by inward projecting seal-free regions (28).
8. Packaging pouch according to one of the claims 1 to 7, characterised in that the region of sealing zone, bordering the interior of the pouch and exhibiting lower bond strength than that of the outer seam (18), runs the whole length of the outer sealing seam (18).
9. Packaging pouch according to one of the claims 1 to 7, characterised in that the region of sealing zone, bordering the interior of the pouch and exhibiting lower bond strength than that of the outer sealing seam (18), runs over at least part of the length of the outer sealing seam (18).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06405298A EP1878671B1 (en) | 2006-07-11 | 2006-07-11 | Packaging bag |
EP06405298.8 | 2006-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2593841A1 true CA2593841A1 (en) | 2008-01-11 |
Family
ID=37478749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002593841A Abandoned CA2593841A1 (en) | 2006-07-11 | 2007-07-05 | Packaging pouch |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080095476A1 (en) |
EP (1) | EP1878671B1 (en) |
AT (1) | ATE483650T1 (en) |
CA (1) | CA2593841A1 (en) |
DE (1) | DE502006008021D1 (en) |
ES (1) | ES2355315T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1037405C2 (en) | 2009-10-16 | 2011-04-19 | Ppg Industries Inc | Pouch for paint colourant. |
DE102012016864B4 (en) | 2012-08-25 | 2016-06-16 | Vereinigte Papierwarenfabriken Gmbh | Satchel bags |
US10654632B2 (en) * | 2017-03-08 | 2020-05-19 | B. Braun Medical Inc. | Flexible containers and related methods |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189702A (en) * | 1962-08-15 | 1965-06-15 | Minnesota Mining & Mfg | Package and method of making |
US3204760A (en) * | 1962-10-10 | 1965-09-07 | Poly Pak Corp Of America | Packages |
BE639342A (en) * | 1962-11-14 | 1900-01-01 | ||
US3155282A (en) * | 1963-05-09 | 1964-11-03 | Crompton & Knowles Corp | Sprinkler type package |
US3434652A (en) * | 1966-07-26 | 1969-03-25 | Diamond Shamrock Corp | Self-supporting plastic container and method of making same |
US3478952A (en) * | 1967-04-14 | 1969-11-18 | Vac Pac Mfg Co | Bag bottom |
US3578239A (en) * | 1967-04-14 | 1971-05-11 | Vac Pac Mfg Co | Bag structure |
US3454211A (en) * | 1968-01-02 | 1969-07-08 | Arvey Corp | Pouch for frozen food products |
US3937396A (en) * | 1974-01-18 | 1976-02-10 | Schneider William S | Valve for vented package |
JPS55154118A (en) * | 1979-05-21 | 1980-12-01 | Dainippon Printing Co Ltd | Heat sealing method and device for stuck member |
DE69031631T2 (en) * | 1989-03-08 | 1998-05-14 | Heisei Polymer Kk | Heat-sealed wrapping element |
FR2715383B1 (en) * | 1994-01-21 | 1996-04-05 | Cofatech | Diffusion device for sublimable products. |
JP3672985B2 (en) * | 1995-11-21 | 2005-07-20 | 藤森工業株式会社 | Heat sealing method for synthetic resin containers |
EP0792735A1 (en) * | 1996-03-01 | 1997-09-03 | The Procter & Gamble Company | Method for sealing the mouth of a flexible sachet or pouch |
US5971613A (en) * | 1997-04-11 | 1999-10-26 | Kapak Corp. | Bag constructions having inwardly directed side seal portions |
-
2006
- 2006-07-11 ES ES06405298T patent/ES2355315T3/en active Active
- 2006-07-11 AT AT06405298T patent/ATE483650T1/en active
- 2006-07-11 EP EP06405298A patent/EP1878671B1/en not_active Not-in-force
- 2006-07-11 DE DE502006008021T patent/DE502006008021D1/en active Active
-
2007
- 2007-07-05 CA CA002593841A patent/CA2593841A1/en not_active Abandoned
- 2007-07-06 US US11/822,511 patent/US20080095476A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ATE483650T1 (en) | 2010-10-15 |
EP1878671A1 (en) | 2008-01-16 |
US20080095476A1 (en) | 2008-04-24 |
ES2355315T3 (en) | 2011-03-24 |
DE502006008021D1 (en) | 2010-11-18 |
EP1878671B1 (en) | 2010-10-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |