CA2684502A1 - Laser scored pour spout for flexible bags - Google Patents
Laser scored pour spout for flexible bags Download PDFInfo
- Publication number
- CA2684502A1 CA2684502A1 CA 2684502 CA2684502A CA2684502A1 CA 2684502 A1 CA2684502 A1 CA 2684502A1 CA 2684502 CA2684502 CA 2684502 CA 2684502 A CA2684502 A CA 2684502A CA 2684502 A1 CA2684502 A1 CA 2684502A1
- Authority
- CA
- Canada
- Prior art keywords
- reclosable
- flexible film
- easy open
- score line
- film package
- 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
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920006254 polymer film Polymers 0.000 claims 1
- 230000004888 barrier function Effects 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 235000011888 snacks Nutrition 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 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
- 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
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Bag Frames (AREA)
Abstract
An easy open, reclosable, flexible film package comprising a front wall, a back wall, a pair of opposing side gussets; a bottom; and a top; wherein the top is sealed; wherein the pair of opposing side gussets and the bottom wall connect the front wall to the back wall; wherein one side gusset has a score line extending from front to back; wherein when the score line is broken a spout is formed by pulling the side gusset below the score line.
Description
LASER SCORED POUR SPOUT FOR FLEXIBLE BAGS
[01] This application claims priority to provisional U.S. Application Ser. No.
60/912,968, filed Apri120, 2007 which is hereby incorporated by reference in its entirety.
FIELD
[01] This application claims priority to provisional U.S. Application Ser. No.
60/912,968, filed Apri120, 2007 which is hereby incorporated by reference in its entirety.
FIELD
[02] The invention relates to flexible bags, in particular flexible bags that are easy open and reclosable.
BACKGROUND
BACKGROUND
[03] Most current packages for cereals and various snack items are bag-in-box packages.
These packages include a box with a flexible bag liner inside the box to provide moisture and oxygen protection to the package contents. The box is first opened and then the bag liner is opened, typically by pinching the sides of the bag liner and pulling the top seam apart. However, current bag liners utilized in the bag-in-box cereal and snack products suffer from poor open-ability and little if any reclosability.
These bag liners have been optimized and down gauged over the years to provide maximum cost savings, at the expense of physical strength, resulting in bag liners that tear upon opening. The peel system employed often has a narrow performance window of peel strength with film strength to prevent bag tearing. Modest results have been obtained with zippers, but zippers add expense and complications to the bag production process.
These packages include a box with a flexible bag liner inside the box to provide moisture and oxygen protection to the package contents. The box is first opened and then the bag liner is opened, typically by pinching the sides of the bag liner and pulling the top seam apart. However, current bag liners utilized in the bag-in-box cereal and snack products suffer from poor open-ability and little if any reclosability.
These bag liners have been optimized and down gauged over the years to provide maximum cost savings, at the expense of physical strength, resulting in bag liners that tear upon opening. The peel system employed often has a narrow performance window of peel strength with film strength to prevent bag tearing. Modest results have been obtained with zippers, but zippers add expense and complications to the bag production process.
[04] A cost-effective easy open package has not been achieved with current bag-in-box designs.
[05] It is desired to have a package for cereal and other snack items that do not require a box but instead comprises a single package to hold the cereal or snack contents.
Eliminating the box reduces expense and minimizes waste after consumption.
Moreover, as the contents of the package are consumed, an empty box becomes a major waste of space since it is difficult to reduce the physical size of the box due to the structure of the box. However, a non-box package can be reduced in size as the product is consumed. In addition, current bag-in-box type packages have no reclosability other than the box top. This provides little protection for the food product since the bag liner inside the box provides all of the barrier properties and generally this bag liner is not provided with a reclose features other than rolling the top of the bag.
SUMMARY
Eliminating the box reduces expense and minimizes waste after consumption.
Moreover, as the contents of the package are consumed, an empty box becomes a major waste of space since it is difficult to reduce the physical size of the box due to the structure of the box. However, a non-box package can be reduced in size as the product is consumed. In addition, current bag-in-box type packages have no reclosability other than the box top. This provides little protection for the food product since the bag liner inside the box provides all of the barrier properties and generally this bag liner is not provided with a reclose features other than rolling the top of the bag.
SUMMARY
[06] In a first aspect a package is provided having side gussets. A laser score line is formed in one of the side gussets. The score line may be broken and the lower part of the gusset pulled out to open the package and form a pour spout. The pour spout may be pushed back in to close the package.
[07] In a second aspect a package is provided having top and bottom gussets. A
laser score line is formed in the top gusset. The score line may be broken and the gusset pulled apart to open the package.
BRIEF DESCRIPTION OF THE DRAWINGS
laser score line is formed in the top gusset. The score line may be broken and the gusset pulled apart to open the package.
BRIEF DESCRIPTION OF THE DRAWINGS
[08] Fig. 1 depicts a package having a laser scored opening in accordance with one aspect of the invention.
[09] Fig. 2 depicts a package in accordance with Fig. 1 with a spout formed from the scored opening.
[10] Fig. 3 depicts a package in accordance with Fig. 2 with the spout pushed in and the package closed together.
[11] Fig. 4 depicts a package having a laser scored opening in accordance with another aspect of the invention wherein adhesive tape is placed on the upper portion of the score line to use for closing.
[12] Fig, 5 depicts a package having a laser scored opening in accordance with another aspect of the invention.
[13] Figs. 6a, 6b, and 6c depict a package having a laser scored opening in accordance with another aspect of the invention.
DETAILED DESCRIPTION
DETAILED DESCRIPTION
[14] Aspects of the present invention are directed to box-less packages prepared from flexible film bags. The flexible film bag provides the desired barrier characteristics of a bag liner, and the stand alone structure and easy open and reclosability features of a box, as well as a suitable surface for printing and graphics. The flexible film bag can have a "Quad Seal" design which resembles a box.
[15] As shown in Fig. 1, the flexible film bag 10 has a front side 12, a back side 14, side gussets 16 and 18, a flat bottom 20, and a top 22 that is formed by the tops of sides 12 and 14.
[16] Forming of the top seal is generally done in one step as is well known in the art. The front / back are sealed together at the same time the tops of the side gussets are sealed.
The side gussets come together folded at the top seal [17] This "Quad Seal" design looks more like a box than other pouch designs such as a SUP (Stand Up Pouch) or fin seal pillow bag. The side gussets 16 and 18 offer more area for graphics and such graphics can be placed similar to a box. These bag styles have been available for at least 10 years and can be produced on various V/F/F/S
machines such as Rovema and Bosch.
The side gussets come together folded at the top seal [17] This "Quad Seal" design looks more like a box than other pouch designs such as a SUP (Stand Up Pouch) or fin seal pillow bag. The side gussets 16 and 18 offer more area for graphics and such graphics can be placed similar to a box. These bag styles have been available for at least 10 years and can be produced on various V/F/F/S
machines such as Rovema and Bosch.
[18] The Quad Seal bag structure is more robust than the usual liner bag structure in order to offer more structure to the package as well as to better protect the product within.
[19] Any suitable film structure may be used for the bags. The type of film structure chosen may be based on a number of parameters including, but not limited to the intended contents for the package such as moisture level and weight of such contents.
Other parameters may be intended storage and distribution conditions of the package and desired durability of the package.
Other parameters may be intended storage and distribution conditions of the package and desired durability of the package.
[20] The film structure may be one or more layers. Typically, the film layer is a two-layer or three-layer structure, but any number of layers suitable for the desired package may be used. The layers may be any suitable film material including, but not limited to, polymeric film materials and foil-type film materials. For example, the outer layer may be a polymeric film, such as oriented films including, but not limited to, PET and BON or OPP. The inner layer(s) may be any suitable inner layer such as, but not limited to, polyolefin-based or foil films. Generally, the layers are selected so that the laser is more effective on the outer layer and has less of an effect on the inner layer(s).
This allows the laser to efficiently score the substrate without any need to refocus the beam during the cross machine movement. Typical, non-limiting, film structures for this package include 48 ga PET / ink / LDPE / 2.5 mil HDPE/tie/EVOH/tie/LL-SSC
and 48 ga PET / ink / adh / 60 ga Met-OPP / adh / 3 mil LDPE.
This allows the laser to efficiently score the substrate without any need to refocus the beam during the cross machine movement. Typical, non-limiting, film structures for this package include 48 ga PET / ink / LDPE / 2.5 mil HDPE/tie/EVOH/tie/LL-SSC
and 48 ga PET / ink / adh / 60 ga Met-OPP / adh / 3 mil LDPE.
[21] The barrier properties of the package are at least as good as or better than current liner film bags typically used in the box. Barrier properties include WVTR and OTR.
(Moisture and oxygen.) Moisture transmission rates typically are less than 1.0 g/100 in2.day. Oxygen transmission rates typically are less than 1.0 cc/100 in2 day.
(Moisture and oxygen.) Moisture transmission rates typically are less than 1.0 g/100 in2.day. Oxygen transmission rates typically are less than 1.0 cc/100 in2 day.
[22] In accordance with an aspect of the invention, a CMD (Cross machine direction) laser score line is placed on the side gusset of the bag. See Fig. 1, laser score 24. When the score line is broken by the consumer, the portion of the gusset below the broke score line is pulled outward to form a pour spout. As shown in Fig. 1, the score line is at most, the width of the gusset which minimizes any chance of premature breakage either on the filling line or during distribution in contrast to a complete CMD score.
This score can either be a continuous line or a row of dashes or dots, all providing a line of weakness in the film structure. The score line can be defined by a tensile property tested across the score line. Tensile values can range from 4.0 lbs/in to 16 lbs/in.
This score can either be a continuous line or a row of dashes or dots, all providing a line of weakness in the film structure. The score line can be defined by a tensile property tested across the score line. Tensile values can range from 4.0 lbs/in to 16 lbs/in.
[23] The shape of the score line may be any suitable shape such as a straight line or a curved line or any combination thereof. For example, a "U" shape or upside down "U" is possible which still forms the pour spout. Advantages with these shapes include wider opening spout for pouring. The consumer either pulls open or pushes in the scored spout.
[24] Current opening features for flexible films and packages include tear tape and tear notches, perforations and scoring of films. However, except for scoring of the films by laser scoring, none of these methods are effective to provide an effective scored line.
[25] To open, the consumer pinches the gusset above and below the score line and pulls to break the score line and form a spout 26 with portion of the gusset below. See Fig. 2 The product would then be dispensed thru this opening in the package.
[26] The bag geometry could have any combination of gusset width, bag width and height.
The wider the gusset, the larger the open pour spout.
The wider the gusset, the larger the open pour spout.
[27] To reclose, the pour spout is pushed back in and the gusset pinched together as shown in Fig. 3. If the gusset opening is small enough, then closure is complete. If the gusset provides a larger opening, a simple, low cost reclose tape 28 could be placed across the gusset, pulling both sides tight to provide a tighter seal. A tight reclose may not be necessary if the package only has a limited number of servings.
[28] Another aspect of the invention relates to including a piece of adhesive tape to aid in the closing of the bag after breaking the laser score. As shown in Fig. 4, a small stripe of permanent adhesive tape 30 could also be placed on one or both sides of the score line. This tape can be used by the consumer maintain the bag in a closed position as shown in Fig. 3. The reclose tape is used to pinch shut the side gusset creating a simple reclose.
[29] As shown in Fig. 5, a small ridge or fold 34 is placed down the center of this gusset which further allows the consumer to grasp and pull the score apart.
[30] In one aspect, the bag could also have a clear side wall or gusset so the consumer can see how much product is left in the package.
[31] The square or rectangular nature of the packages provides good stackability for display and shipping.
[32] A further aspect of this invention aligns the laser score line with the machine direction of the film and package. Attention is drawn to Fig 6a which shows a flexible film bag 40 which is similar to the flexible film bag described in Fig. 1 except rotated 90 degrees. This allows the pouch to stand up on bottom gusset 42 instead of the traditional bottom seal. As shown in Fig. 6a, a score line 46 runs along and down the center of top gusset 44. Thus top gusset 44 and the laser score 46 provides the easy open feature of the package. As shown in Fig. 6b and Fig. 6c, the pouch opens very easily along score 46 by pulling the top gusset in the direction of the arrows shown in Fig. 6b. Fig. 6c shows the opened package with contents 48 exposed.
[33] While the invention has been described with respect to specific examples including presently preferred modes of carrying out the invention, those skilled in the art will appreciate that there are numerous variations and permutations of the above described systems and techniques that fall within the spirit and scope of the invention as set forth in the appended claims.
Claims (19)
1. An easy open, reclosable, flexible film package comprising a front wall, a back wall, a pair of opposing side gussets; a bottom; and a top; wherein the top is sealed;
wherein the pair of opposing side walls and the bottom wall connect the front wall to the back wall; wherein one side gusset has a score line extending from front to back;
wherein when the score line is broken a spout is formed by pulling the side gusset below the score line.
wherein the pair of opposing side walls and the bottom wall connect the front wall to the back wall; wherein one side gusset has a score line extending from front to back;
wherein when the score line is broken a spout is formed by pulling the side gusset below the score line.
2. The easy open, reclosable, flexible film package according to claim 1 wherein the package can be closed by pushing the pour spout in toward the package.
3. The easy open, reclosable, flexible film package according to claim 2 further comprising adhesive tape attached to the package to apply to the front and back of the package to squeeze the side together after closing the package.
4. The easy open, reclosable, flexible film package according to claim 1 wherein the adhesive tape is attached to the gusset above the score line or below the score line.
5. The easy open, reclosable, flexible film package according to claim 1 wherein the side gusset with the score line has a fold or crease extending from top to bottom.
6. The easy open, reclosable, flexible film package according to claim 1 wherein the bottom has a rectangular shape.
7. The easy open, reclosable, flexible film package according to claim 1 wherein the flexible film comprises at least two layers.
8. The easy open, reclosable, flexible film package according to claim 7 wherein an outer layer comprises oriented polymer films.
9. The easy open, reclosable, flexible film package according to claim 7 wherein an inner layer comprises a polyolefin or a foil.
10. The easy open, reclosable, flexible film package according to claim 1 wherein the score line is a straight line.
11. The easy open, reclosable, flexible film package according to claim 1 wherein the score line is a straight line.
12. The easy open, reclosable, flexible film package according to claim 11 wherein the score line is a U-shape.
13. The easy open, reclosable, flexible film package according to claim 1 wherein the bottom is flat.
14. The easy open, reclosable, flexible film package according to claim 1 wherein the score line is in the cross-machine direction.
15. The easy open, reclosable, flexible film package according to claim 1 wherein at least one side wall is transparent.
16. The easy open, reclosable, flexible film package according to claim 1 wherein the score line has a tensile strength of 4.0 lbs/in to 16 lbs/in.
17. An easy open, reclosable, flexible film package comprising a front wall, a back wall, a top gusset and a bottom gusset; and a pair of opposing sides;
wherein the opposing sides are sealed; wherein the top gusset and bottom gusset connect the front wall to the back wall; wherein the top gusset has a score line extending from side to side; wherein when the score line is broken an opening is formed by pulling apart the front wall and the back wall.
wherein the opposing sides are sealed; wherein the top gusset and bottom gusset connect the front wall to the back wall; wherein the top gusset has a score line extending from side to side; wherein when the score line is broken an opening is formed by pulling apart the front wall and the back wall.
18. An easy open, reclosable, flexible film package according to claim 17 wherein the flexible package can stand upright on the bottom gusset.
19. An easy open, reclosable, flexible film package according to claim 17 wherein the score line has a tensile strength of 4.0 lbs/in to 16 lbs/in.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US91296807P | 2007-04-20 | 2007-04-20 | |
US60/912,968 | 2007-04-20 | ||
PCT/US2008/060778 WO2008131194A1 (en) | 2007-04-20 | 2008-04-18 | Laser scored pour spout for flexible bag |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2684502A1 true CA2684502A1 (en) | 2008-10-30 |
Family
ID=39872265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2684502 Abandoned CA2684502A1 (en) | 2007-04-20 | 2008-04-18 | Laser scored pour spout for flexible bags |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080260304A1 (en) |
CA (1) | CA2684502A1 (en) |
MX (1) | MX2009011124A (en) |
WO (1) | WO2008131194A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100247822A1 (en) * | 2009-02-03 | 2010-09-30 | Evan Michael Ziolkowski | Variable depth laser scored easy-open pouch for microwave steam venting |
US10071841B2 (en) | 2013-07-03 | 2018-09-11 | Bemis Company, Inc. | Scored package |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2093977A (en) * | 1935-07-20 | 1937-09-21 | John A Farmer | Bag closure |
US3458111A (en) * | 1967-12-21 | 1969-07-29 | Mira Pak Inc | Package |
US3615712A (en) * | 1969-04-01 | 1971-10-26 | Cpc International Inc | Plastic food pouch for cooking |
IT1152032B (en) * | 1981-08-21 | 1986-12-24 | Teich Ag Folienwalzwerk | PACKAGING WITH GAS SEALED ENVELOPE |
US5184896A (en) * | 1991-10-11 | 1993-02-09 | The Procter & Gamble Company | Self-expanding flexible pouch including improved extensible stay to maximize opening |
US5928741A (en) * | 1992-08-11 | 1999-07-27 | E. Khashoggi Industries, Llc | Laminated articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix |
EP0630822A1 (en) * | 1993-06-25 | 1994-12-28 | The Procter & Gamble Company | Pouch with ridges |
US5437406A (en) * | 1993-07-02 | 1995-08-01 | International Paper | Semi-rigid cereal carton |
FR2757835B1 (en) * | 1996-12-31 | 1999-03-19 | Unisabi Sa | LASER PRE-CUT PACKAGE MANUFACTURING METHOD |
US6164826A (en) * | 1998-10-09 | 2000-12-26 | Reynolds Consumer Products Inc. | Resealable spout for side-gusseted packages |
US6048100A (en) * | 1999-03-10 | 2000-04-11 | Industrial Label Corp. | Resealable closure for a bag |
FR2821610B1 (en) * | 2001-03-01 | 2003-08-29 | Masterfoods | FOOD BAG AND ESPECIALLY PELLET TYPE FOOD BAG |
US7040810B2 (en) * | 2002-03-26 | 2006-05-09 | Mark Steele | Flexible package with a transverse access panel device |
US20030231811A1 (en) * | 2002-06-07 | 2003-12-18 | Hodson Jay D. | Internally scored film, package and methods of making the same |
ES2295501T3 (en) * | 2003-11-26 | 2008-04-16 | THE PROCTER & GAMBLE COMPANY | PACKAGING THAT UNDERSTANDS A DISPENSING HOLE CREATED BY PARTS THAT SOLPOSE FROM A LAMINATED PACKAGING MATERIAL. |
US7717620B2 (en) * | 2004-06-11 | 2010-05-18 | Sonoco Development, Inc. | Flexible packaging structure with a built-in opening and reclose feature, and method for making same |
US7305805B2 (en) * | 2005-09-22 | 2007-12-11 | Frito-Lay North America, Inc. | Method for making a flexible reclosable package |
-
2008
- 2008-04-18 WO PCT/US2008/060778 patent/WO2008131194A1/en active Application Filing
- 2008-04-18 MX MX2009011124A patent/MX2009011124A/en not_active Application Discontinuation
- 2008-04-18 CA CA 2684502 patent/CA2684502A1/en not_active Abandoned
- 2008-04-18 US US12/105,673 patent/US20080260304A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
MX2009011124A (en) | 2009-10-30 |
WO2008131194A1 (en) | 2008-10-30 |
WO2008131194A8 (en) | 2009-11-12 |
US20080260304A1 (en) | 2008-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |
Effective date: 20130418 |