US20060013514A1 - Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets - Google Patents
Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets Download PDFInfo
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- US20060013514A1 US20060013514A1 US10/894,879 US89487904A US2006013514A1 US 20060013514 A1 US20060013514 A1 US 20060013514A1 US 89487904 A US89487904 A US 89487904A US 2006013514 A1 US2006013514 A1 US 2006013514A1
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- bag
- gusset
- vacuum packaging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
- B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Vacuum Packaging (AREA)
- Bag Frames (AREA)
Abstract
Vacuum packaging bags and methods of manufacturing and using vacuum packaging bags are disclosed herein. In one embodiment, a vacuum packaging bag includes a first panel, a second panel coupled to the first panel, and a gusset between the first and second panels. The first panel has a first gas impermeable layer and a first sealable layer coupled to the first gas impermeable layer. The second panel has a second gas impermeable layer and a second sealable layer coupled to the second gas impermeable layer. The gusset can extend along a length of the bag and project inwardly toward an interior region. The bag may further include a plurality of intercommunicating channels for conveying a flow of gas when the bag is evacuated.
Description
- The present invention generally relates to vacuum packaging. More particularly, the invention is directed to vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets.
- Vacuum packaging involves removing air or other gases from a storage container and then sealing the container to prevent the contents from being exposed to ambient air. Vacuum packaging is particularly useful in protecting food and other perishables against oxidation. Oxygen is a main cause of food spoilage and contributes to the growth of bacteria, mold, and yeast. Accordingly, vacuum-packaged food often lasts three to five times longer than food stored in ordinary containers. Moreover, vacuum packaging is useful for storing clothes, photographs, silver, and other items to prevent discoloration, corrosion, rust, and tarnishing. Vacuum packaging also produces tight, strong, and compact packages, reducing the bulk of articles and allowing for more space to store other supplies.
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FIGS. 1A and 1B are schematic isometric views of aconventional appliance 10 for vacuum packaging an object 98 (shown in broken lines) in accordance with the prior art. Thevacuum packaging appliance 10 includes abase 20, alid 40 pivotably coupled to thebase 20, alower trough 22 in thebase 20, an upper trough (not shown) in thelid 40, and a vacuum pump (not shown) operably coupled to the upper trough. Thelid 40 pivots between an open position (shown inFIG. 1B ), in which a portion of abag 60 can be placed between thelid 40 and thebase 20, and a closed position (shown inFIG. 1A ), in which thebag 60 can be evacuated and thermally sealed. In the closed position, the upper trough and thelower trough 22 are aligned and form a vacuum chamber to remove gas from the interior of thebag 60. Thebase 20 includes aseal 24 surrounding the vacuum chamber to seal the chamber from ambient air while gas is removed from the interior of thebag 60. Thevacuum packaging appliance 10 further includes aheating element 35 to thermally seal thebag 60 after the gas has been evacuated. A vacuum packaging appliance of this type is disclosed in U.S. Pat. No. 4,941,310, which is hereby incorporated by reference in its entirety. - Conventional vacuum packaging bags include two panels attached together with an open end. Typically, the panels each include two or more layers. The inner layer can be a heat sealable material, and the outer layer can be a gas impermeable material to provide a barrier against the influx of air. The plasticity temperature of the inner layer is lower than the outer layer. As such, the bag can be heated to thermally bond the inner layer of each panel together to seal the bag without melting or puncturing the outer layer.
- A conventional vacuum packaging process includes depositing the
object 98 into thebag 60 and positioning anopen end 62 of thebag 60 in thelower trough 22 of thevacuum packaging appliance 10. Next, thelid 40 pivots downward to form the vacuum chamber with theopen end 62 of thebag 60 disposed within the vacuum chamber. The vacuum pump then removes gas from the vacuum chamber and the interior of thebag 60, which is in fluid communication with the vacuum chamber. After gas has been removed from the interior of thebag 60, the heating element 30 heats a strip of thebag 60 proximate to theopen end 62 to bond the inner layer of each panel together and thermally seal thebag 60. - One problem with conventional vacuum packaging bags is that bags configured to store bulky objects have big panels, which require a large vacuum packaging appliance to evacuate and seal. Large appliances have relatively big footprints and consume significant space on a countertop or other surface. For example, the footprint of the
appliance 10 illustrated inFIGS. 1A-1B is the surface area of the bottom of thebase 20. Accordingly, there is a need to provide vacuum packaging appliances with smaller footprints. -
FIGS. 1A and 1B are schematic isometric views of a conventional appliance for vacuum packaging objects in accordance with the prior art. -
FIG. 2 is a schematic isometric view of a vacuum packaging system including a vacuum packaging appliance and a vacuum packaging bag in accordance with one embodiment of the invention. -
FIG. 3 is a schematic front isometric view of the vacuum packaging bag ofFIG. 2 . -
FIG. 4 is an enlarged schematic cross-sectional side view of a portion of the vacuum packaging bag ofFIG. 2 with the first and second panels pressed together. -
FIG. 5 is a schematic front isometric view of a vacuum packaging bag in accordance with another embodiment of the invention. -
FIG. 6 is a schematic front isometric view of a vacuum packaging bag in accordance with another embodiment of the invention. -
FIG. 7 is a schematic front isometric view of a bag roll for forming vacuum packaging bags in accordance with another embodiment of the invention. -
FIG. 8 is a flow chart illustrating a method of using vacuum bags according to one aspect of the invention. - A. Overview
- The present invention is directed toward vacuum packaging bags and methods of manufacturing and using vacuum packaging bags. In one embodiment, a vacuum packaging bag includes a first panel, a second panel coupled to the first panel, and a gusset between the first and second panels. The first panel has a first gas impermeable layer and a first sealable layer coupled to the first gas impermeable layer. The second panel has a second gas impermeable layer and a second sealable layer coupled to the second gas impermeable layer. The gusset can extend along a length of the bag and project inwardly toward an interior region.
- In another embodiment, a vacuum packaging bag includes a first panel and a second panel coupled to the first panel. The first panel has a plurality of intercommunicating channels, a first edge, a second edge opposite the first edge, a first gas impermeable layer, and a first sealable layer coupled to the first gas impermeable layer. The second panel has a third edge, a fourth edge opposite the third edge, a second gas impermeable layer, and a second sealable layer coupled to the second gas impermeable layer. The bag further includes a first gusset between the first and third edges and a second gusset between the second and fourth edges. In one aspect of this embodiment, the sealable layers are formed of a material such that the first sealable layer pealably bonds with the second sealable layer under the influence of heat and/or pressure. The sealable layers may also be formed of a material such that the first sealable layer permanently bonds with the second sealable layer.
- The following disclosure describes several embodiments of vacuum packaging bags and methods of manufacturing and using vacuum packaging bags. Several details describing structures and processes that are well known and often associated with vacuum packaging appliances and bags are not set forth in the following description for purposes of brevity. Moreover, although the following disclosure sets forth several embodiments of different aspects of the invention, several other embodiments of the invention can have different configurations or different components than those described in this section. As such, it should be understood that the invention may have other embodiments with additional elements or without several of the elements described below with reference to
FIGS. 2-8 . - B. Embodiments of Vacuum Packaging Systems Including Vacuum Packaging Bass and Vacuum Packaging Appliances
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FIG. 2 is a schematic isometric view of avacuum packaging system 100 including avacuum packaging appliance 110 and avacuum packaging bag 160 in accordance with one embodiment of the invention. Thevacuum packaging appliance 110 includes a base 120, alid 140, and ahinge 150 pivotably coupling thelid 140 to the base 120. Thelid 140 is pivotable about an axis A-A between an open position (shown inFIG. 2 ) and a closed position. The illustrated base 120 includes afirst chamber portion 122 and afirst seal 124 surrounding thefirst chamber portion 122. Thelid 140 can include asecond chamber portion 142 and asecond seal 144 surrounding thesecond chamber portion 142. When thelid 140 is in the closed position, the first andsecond chamber portions vacuum packaging appliance 110 can have other configurations. For example, the base 120 and/or thelid 140 might not include a chamber portion and/or a seal. Moreover, thevacuum packaging appliance 110 may be lidless. - The
vacuum packaging appliance 110 further includes a vacuum pump 130 (shown in broken lines) operably coupled to the first and/orsecond chamber portion lid 140 is in the closed position. Thevacuum pump 130 can also remove gas from the interior of thebag 160 when anopen end 162 of thebag 160 is positioned in the vacuum chamber. Thebag 160 is configured so that the interior of thebag 160 is in fluid communication with the vacuum chamber when thelid 140 is in the closed position, as described in greater detail below with reference toFIG. 4 . Accordingly, thevacuum pump 130 can remove gas from the vacuum chamber and the interior of thebag 160. - In the illustrated embodiment, the
vacuum packaging appliance 110 further includes aheating element 135 and amember 155 for pressing thebag 160 against theheating element 135. Theheating element 135 can be carried by the base 120, and themember 155 can be carried by and project from thelid 140. Theheating element 135 is configured to thermally seal thebag 160 after the gas has been substantially evacuated from the interior of thebag 160. Theheating element 135 heats thebag 160 and themember 155 presses thebag 160 against theheating element 135 to ensure a seal is formed across thebag 160. In other embodiments, thevacuum packaging appliance 110 can have a different configuration. - C. Embodiments of Vacuum Packaging Bags Having Gussets
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FIG. 3 is a schematic front isometric view of thevacuum packaging bag 160 ofFIG. 2 . Thebag 160 includes afirst panel 164 and asecond panel 174 coupled to thefirst panel 164. Thefirst panel 164 can include a first edge 168 a, a second edge 168 b, a third edge 168 c opposite the first edge 168 a, and afourth edge 168 d opposite the second edge 168 b. Thesecond panel 174 can include a first edge 178 a, a second edge 178 b, a third edge 178 c opposite the first edge 178 a, and afourth edge 178 d opposite the second edge 178 b. In the illustrated embodiment, the second edge 168 b and the third edge 168 c of thefirst panel 164 are attached to the second edge 178 b and the third edge 178 c, respectively, of thesecond panel 174. Thefourth edges second panels open end 162 of thebag 160. The first andsecond panels interior region 184 into which an object(s) can be placed. - The illustrated
vacuum packaging bag 160 further includes agusset 190 between the first andsecond panels gusset 190 has afirst portion 191 a attached to thefirst panel 164 at the first edge 168 a and a second portion 191 b attached to thesecond panel 174 at the first edge 178 a. The illustratedgusset 190 extends along a length L of thebag 160 and projects inwardly toward theinterior region 184 when the bag is empty. In other embodiments, such as the embodiments described below with reference toFIGS. 5-6 , the bag may include a different number of gussets and/or the gusset may extend along a width of the bag. - One advantage of the illustrated
bag 160 is that thegusset 190 increases the storage capacity of thebag 160. The storage capacity is increased because thegusset 190 allows the first andsecond panels interior region 184, an angle α between the first and second portions 191 a-b increases and thegusset 190 moves in a direction D1 so that the first andsecond panels bag 160 can carry a greater volume of objects. Although the storage capacity of conventional bags can be increased by increasing the size of the panels, the larger panels require a bigger vacuum packaging appliance to evacuate and seal the bag. Bigger vacuum packaging appliances have larger footprints and require more space on the countertop or other surface. Thegusset 190 in the illustratedbag 160, however, increases the storage capacity of thebag 160 without increasing the size of the panels. Consequently, thebag 160 can be evacuated and sealed by an appliance with a smaller footprint. - Another feature of the illustrated
bag 160 is that as an object is placed into thebag 160 and the first andsecond panels second panels second panels -
FIG. 4 is an enlarged schematic cross-sectional side view of a portion of thevacuum packaging bag 160 with the first andsecond panels second panels bag 160 can be heated to bond the sealable layers 182 a-b together without melting or puncturing the gas impermeable layers 180 a-b. In other embodiments, the first andsecond panels bag 160. - The sealable layers 182 can include a pealably sealable layer and/or a substantially permanently sealable layer. The pealably sealable layer includes resin or other materials that through pressure, heat, or another sealing enabler, form a pealable seal that is opened through a manual pealing action. The manual pealing action does not require a tool and does not result in wasting or destroying a portion of the vacuum packaging bag. Pealably sealable layers are described in detail in U.S. Provisional Patent Application No. 60/553,693, filed Mar. 15, 2004, which is incorporated by reference herein. Permanently sealable layers can include resin that with heat forms a generally permanent seal. In several embodiments, the sealable layers 182 can include a material which when heated to a first temperature forms a pealable seal and when heated to a second temperature forms a permanent seal.
- In the illustrated embodiment, the
second panel 174 includes a plurality of intercommunicatingchannels 175 configured to exhaust gas from the interior of thebag 160 when the first andsecond panels FIG. 4 . Accordingly, when the lid 140 (FIG. 2 ) of the vacuum packaging appliance 110 (FIG. 2 ) is in the closed position and thebag 160 is sandwiched between the first andsecond seals 124 and 144 (FIG. 2 ), gas can be evacuated from the interior region 184 (FIG. 3 ) of thebag 160 through thechannels 175. In other embodiments, thesecond panel 174 may not include thechannels 175. -
FIG. 5 is a schematic front isometric view of a vacuum packaging bag 260 in accordance with another embodiment of the invention. The bag 260 illustrated inFIG. 5 is generally similar to thebag 160 described above with reference toFIG. 3 . For example, the illustrated bag 260 includes afirst panel 164, asecond panel 274 coupled to thefirst panel 164, and afirst gusset 190 between the first andsecond panels second panel 274. Moreover, the illustrated bag 260 includes asecond gusset 293 between the first andsecond panels first gusset 190. Thesecond gusset 293 includes afirst portion 294 a attached to thefirst panel 164 at the third edge 168 c and a second portion 294 b attached to thesecond panel 274 at the third edge 178 c. The first andsecond gussets second panel 164 and/or 274 of the bag 260 may include a plurality of intercommunicating channels to facilitate the evacuation of gas from the bag 260. -
FIG. 6 is a schematic front isometric view of avacuum packaging bag 360 in accordance with another embodiment of the invention. Thebag 360 illustrated inFIG. 6 is generally similar to the bag 260 described above with reference toFIG. 5 . For example, the illustratedbag 360 includes afirst panel 164, asecond panel 274, afirst gusset 190, and asecond gusset 293. The illustrated bag 260, however, further includes athird gusset 396 between the first andsecond panels third gusset 396 includes a first portion 297 a attached to thefirst panel 164 at the second edge 168 b and a second portion 297 b attached to thesecond panel 274 at the second edge 178 b. The first, second, andthird gussets bag 360. -
FIG. 7 is a schematic front isometric view of abag roll 461 for forming vacuum packaging bags in accordance with another embodiment of the invention. The illustratedbag roll 461 includes a first sheet 466, asecond sheet 476 coupled to the first sheet 466, and anopen end 462. The first sheet 466 includes a first edge 468 a and a second edge 468 c opposite the first edge 468 a, and thesecond sheet 476 includes a first edge 478 a and a second edge 478 c opposite the first edge 478 a. The first andsecond sheets 466 and 476 can include gas impermeable layers and sealable layers, similar to those described above with reference toFIG. 4 . Thebag roll 461 further includes (a) afirst gusset 490 between the first edge 468 a of the first sheet 466 and the first edge 478 a of thesecond sheet 476, and (b) asecond gusset 493 between the second edge 468 c of the first sheet 466 and the second edge 478 c of thesecond sheet 476. Bags are formed from thebag roll 461 by pulling out a portion of the first andsecond sheets 466 and 476, cutting thesheets 466 and 476, for example, along line B-B, and sealing one of the open ends. -
FIG. 8 is a flow chart illustrating amethod 500 according to one aspect of the invention. Themethod 500 begins atstep 502 wherein a user cuts a portion of a bag roll, such as described above with reference toFIG. 7 . Instep 504, the user seals one of the two open ends of the portion of the bag roll. Thestep 504 may involve applying heat, pressure, or both, in a predefined range and for a predefined time period. For example, the end can be pealably or permanently sealed with theheating element 135 of thevacuum packaging appliance 110. If a user is using a preformed bag, however, thesteps step 506, the user places an object into the bag. Instep 508, the user evacuates the bag. Evacuation typically involves placing the open end of the bag in the vacuum chamber of an appliance and closing the lid of the appliance. Instep 510, the open end of the bag is sealed. The seal can be a pealable or permanent seal as described above with reference to thestep 504. In step 512, the user stores the object in the sealed bag as desired. - As the side-gusseted portion of the bag has additional bag material, sealing tends to require more energy than bags not having the extra thickness of the side-gussets. This is not a difficult problem to compensate for, simply meaning that more energy must be used and perhaps users should be aware of this requirement to ensure that seals are properly made. Additionally, the side-gusseted bag may best be made from PE or PP materials as these seal more readily than competing nylon materials. However, any suitable material may be used as long as the proper care is taken.
- From the foregoing, it will be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications may be made without deviating from the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims.
Claims (54)
1. A vacuum packaging bag, comprising:
a first panel having a first gas impermeable layer and a first sealable layer coupled to the first gas impermeable layer;
a second panel having a second gas impermeable layer and a second sealable layer coupled to the second gas impermeable layer; and
a gusset between the first panel and the second panel.
2. The vacuum packaging bag of claim 1 wherein:
the first panel further includes a first edge and a second edge opposite the first edge;
the second panel further includes a third edge and a fourth edge opposite the third edge; and
the gusset is between the first and third edges.
3. The vacuum packaging bag of claim 1 wherein:
the first panel further includes a first edge and a second edge opposite the first edge;
the second panel further includes a third edge and a fourth edge opposite the third edge;
the gusset is a first gusset between the first and third edges; and
the bag further comprises a second gusset between the second and fourth edges.
4. The vacuum packaging bag of claim 1 wherein:
the gusset is a first gusset;
the vacuum packaging bag further comprises second and third gussets between the first and second panels; and
the second gusset is opposite the first gusset and the third gusset extends between the first and second gussets.
5. The vacuum packaging bag of claim 1 wherein the gusset extends along a length of the bag.
6. The vacuum packaging bag of claim 1 wherein the first panel further includes a plurality of intercommunicating channels for conveying a flow of gas when the bag is evacuated.
7. The vacuum packaging bag of claim 1 wherein the first panel has a first footprint and the second panel has a second footprint, and wherein the gusset is positioned such that an interior volume of the bag can increase without substantially changing the first and second footprints.
8. The vacuum packaging bag of claim 1 wherein the first sealable layer comprises a first pealably sealable layer, and wherein the second sealable layer comprises a second pealably sealable layer that selectively pealably bonds with the first pealably sealable layer to seal the bag.
9. The vacuum packaging bag of claim 1 wherein the first and second sealable layers are formed of a material such that the first sealable layer pealably bonds with the second sealable layer under the influence of heat and/or pressure.
10. The vacuum packaging bag of claim 1 wherein the first and second sealable layers are formed of a material such that the first sealable layer substantially permanently bonds with the second sealable layer under the influence of heat.
11. The vacuum packaging bag of claim 1 wherein the gusset projects toward an interior region of the bag when the bag is empty.
12. A vacuum packaging bag that a user can place a product in, vacuum evacuate to a predefined vacuum level, hermetically seal through a predefined sealing process, the vacuum packaging bag characterized in that the bag has at least one gusset for allowing the bag to expand as the product is placed in the bag.
13. The vacuum packaging bag of claim 12 , further comprising:
a first panel having a first gas impermeable layer and a first sealable layer coupled to the first gas impermeable layer; and
a second panel having a second gas impermeable layer and a second sealable layer coupled to the second gas impermeable layer;
wherein the gusset is between the first panel and the second panel.
14. The vacuum packaging bag of claim 12 wherein the gusset is a first gusset, wherein the bag further comprises a second gusset, and wherein the first and second gussets are on opposite sides of the bag.
15. The vacuum packaging bag of claim 12 wherein the gusset extends along a length of the bag.
16. The vacuum packaging bag of claim 12 , further comprising a plurality of intercommunicating channels for conveying a flow of gas when the bag is evacuated.
17. The vacuum packaging bag of claim 12 wherein the gusset projects toward an interior region of the bag when the bag is empty.
18. A vacuum packaging bag, comprising:
a first panel having a plurality of intercommunicating channels, a first edge, a second edge opposite the first edge, a first gas impermeable layer, and a first sealable layer coupled to the first gas impermeable layer;
a second panel having a third edge, a fourth edge opposite the third edge, a second gas impermeable layer, and a second sealable layer coupled to the second gas impermeable layer;
a first gusset between the first and third edges; and
a second gusset between the second and fourth edges.
19. The vacuum packaging bag of claim 18 , further comprising a third gusset between the first and second panels and extending from the first gusset to the second gusset.
20. The vacuum packaging bag of claim 18 wherein the first and second gussets extend along a length of the bag.
21. The vacuum packaging bag of claim 18 wherein the first panel has a first footprint and the second panel has a second footprint, and wherein the first and second gussets are positioned such that an interior volume of the bag can increase without substantially changing the first and second footprints.
22. The vacuum packaging bag of claim 18 wherein the first and second sealable layers are formed of a material such that the first sealable layer pealably bonds with the second sealable layer under the influence of heat and/or pressure.
23. The vacuum packaging bag of claim 18 wherein the first and second sealable layers are formed of a material such that the first sealable layer substantially permanently bonds with the second sealable layer under the influence of heat.
24. The vacuum packaging bag of claim 18 wherein the first and second gussets project toward an interior region of the bag when the bag is empty.
25. A vacuum packaging bag, comprising:
a first panel having a first footprint, a first gas impermeable layer, and a first sealable layer coupled to the first gas impermeable layer;
a second panel having a second footprint at least approximately the same as the first footprint, a second gas impermeable layer, and a second sealable layer coupled to the second gas impermeable layer; and
a gusset between the first panel and the second panel so that an interior volume of the bag can increase without substantially changing the first and second footprints.
26. The vacuum packaging bag of claim 25 wherein the gusset is a first gusset, and wherein the bag further comprises a second gusset between the first and second panels and opposite the first gusset.
27. The vacuum packaging bag of claim 25 wherein the gusset extends along a length of the bag.
28. The vacuum packaging bag of claim 25 wherein the first panel further includes a plurality of intercommunicating channels for conveying a flow of gas when the bag is evacuated.
29. The vacuum packaging bag of claim 25 wherein the gusset projects toward an interior region of the bag when the bag is empty.
30. A bag roll for forming vacuum packaging bags that hold food or other products, the bag roll comprising:
a first sheet having a first gas impermeable layer and a first sealable layer coupled to the first gas impermeable layer;
a second sheet having a second gas impermeable layer and a second sealable layer coupled to the second gas impermeable layer; and
a gusset between the first sheet and the second sheet;
wherein portions of the bag roll may be cut to form bags having opposing open ends that are heat-sealable.
31. The bag roll of claim 30 wherein:
the first sheet further includes a first edge and a second edge opposite the first edge;
the second sheet further includes a third edge and a fourth edge opposite the third edge; and
the gusset is between the first and third edges.
32. The bag roll of claim 30 wherein:
the first sheet further includes a first edge and a second edge opposite the first edge;
the second sheet further includes a third edge and a fourth edge opposite the third edge;
the gusset is a first gusset between the first and third edges; and
the bag roll further comprises a second gusset between the second and fourth edges.
33. The bag roll of claim 30 wherein the gusset extends along a length of the roll.
34. The bag roll of claim 30 wherein the first sheet further includes a plurality of intercommunicating channels for conveying a flow of gas.
35. The bag roll of claim 30 wherein the first and second sealable layers are formed of a material such that the first sealable layer pealably bonds with the second sealable layer under the influence of heat and/or pressure.
36. The bag roll of claim 30 wherein the first and second sealable layers are formed of a material such that the first sealable layer substantially permanently bonds with the second sealable layer under the influence of heat.
37. The bag roll of claim 30 wherein the gusset projects inwardly toward an interior region of the roll.
38. A method of using a vacuum packaging bag, the method comprising:
placing an object into a vacuum packaging bag having a gusset so that an interior volume of the bag increases to receive the object;
at least substantially evacuating gas from the vacuum packaging bag with a vacuum packaging appliance; and
sealing an open end of the vacuum packaging bag with the vacuum packaging appliance to at least substantially hermetically seal the bag.
39. The method of claim 38 wherein:
the vacuum packaging bag comprises a first panel, a second panel opposite the first panel, and the gusset between the first and second panels, the first panel having a first footprint and the second panel having a second footprint; and
placing the object into the bag comprises increasing the interior volume of the bag without substantially changing the first and/or second footprints.
40. The method of claim 38 wherein:
the gusset is a first gusset;
the vacuum packaging bag comprises a second gusset opposite the first gusset; and
placing the object into the bag comprises unfolding the first and second gussets to increase the interior volume of the bag.
41. The method of claim 38 wherein at least substantially evacuating gas from the bag comprises exhausting gas through intercommunicating channels in the bag.
42. The method of claim 38 wherein:
the vacuum packaging bag comprises a first pealably sealable layer and a second pealably sealable layer; and
sealing the open end of the bag comprises pealably bonding the first pealably sealable layer to the second pealably sealable layer.
43. The method of claim 38 wherein sealing the open end of the bag comprises heating the open end of the bag to form a thermal seal.
44. A method for manufacturing a vacuum packaging bag, the method comprising:
forming first and second panels with each panel having a gas impermeable layer and a sealable layer coupled to the gas impermeable layer; and
forming a gusset between the first and second panels.
45. The method of claim 44 wherein:
forming the first and second panels comprises forming the first panel with a first edge and a second edge opposite the first edge and forming the second panel with a third edge and a fourth edge opposite the third edge; and
forming the gusset comprises forming the gusset between the first and third edges.
46. The method of claim 44 wherein the gusset is a first gusset, and wherein the method further comprises forming a second gusset between the first and second panels and opposite the first gusset.
47. The method of claim 44 wherein forming the gusset comprises forming the gusset along a length of the bag.
48. The method of claim 44 wherein forming the first and second panels comprises forming a plurality of intercommunicating channels in the first panel for conveying a flow of gas when the bag is evacuated.
49. The method of claim 44 wherein forming the gusset comprises forming the gusset such that the gusset projects inwardly.
50. The method of claim 44 , further comprising heat sealing the first panel to the second panel at an end of the bag.
51. The method of claim 44 wherein forming the first and second panels comprises forming the first and second sealable layers with a material such that the first sealable layer pealably bonds with the second sealable layer under the influence of heat and/or pressure.
52. The method of claim 44 wherein forming the first and second panels comprises forming the first and second sealable layers with a material such that the first sealable layer substantially permanently bonds with the second sealable layer under the influence of heat.
53. A bag suitable for use with a vacuum packaging appliance, said bag characterized in that said bag has at least one side-gusset arranged to expand under manual operation by a user.
54. A bag as recited in claim 53 , wherein said bag is made from a polyester material well suited for heat sealing.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/894,879 US20060013514A1 (en) | 2004-07-19 | 2004-07-19 | Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets |
PCT/US2005/025238 WO2006020085A2 (en) | 2004-07-19 | 2005-07-14 | Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets |
TW094124301A TWI275531B (en) | 2004-07-19 | 2005-07-19 | Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags gussets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/894,879 US20060013514A1 (en) | 2004-07-19 | 2004-07-19 | Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060013514A1 true US20060013514A1 (en) | 2006-01-19 |
Family
ID=35599507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/894,879 Abandoned US20060013514A1 (en) | 2004-07-19 | 2004-07-19 | Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets |
Country Status (3)
Country | Link |
---|---|
US (1) | US20060013514A1 (en) |
TW (1) | TWI275531B (en) |
WO (1) | WO2006020085A2 (en) |
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WO2006020085A2 (en) | 2006-02-23 |
TWI275531B (en) | 2007-03-11 |
WO2006020085A3 (en) | 2007-03-08 |
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