US20040007494A1 - Apparatus and method to more effectively vacuum package foods and other objects - Google Patents
Apparatus and method to more effectively vacuum package foods and other objects Download PDFInfo
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- US20040007494A1 US20040007494A1 US10/195,610 US19561002A US2004007494A1 US 20040007494 A1 US20040007494 A1 US 20040007494A1 US 19561002 A US19561002 A US 19561002A US 2004007494 A1 US2004007494 A1 US 2004007494A1
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- container
- raised
- wall
- bag
- irregular surface
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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
Definitions
- the present invention is directed to flexible packaging and method which is more efficient and effective than current designs in containing and protecting foods and other articles, and in particular has specific advantages when used in conjunction with evacuated containment.
- Earliest flexible packaging utilized single ply flexible films or sheet stock to contain goods. Closure was accomplished by wrapping goods, such as with clear plastic films, or by twist ties, overlapping closures, clips, molded in zippers, or by other means. Later improvements to closures included heat welding pouches of single ply material around stored articles.
- a problem which remains, however, is that even with the protrusions caused by these regular patterns, there is a still large amount of predictable surface contact between package contents and the flexible sheet which forms part or all of the container. This can cause sticking of packaging to contents after freezing, and result in artificial looking patterning on the outside of foods or other contained articles after freezing or cooking. It can also lead to small pockets between the container and its contents harboring moisture, microbes or harmful gasses.
- FIG. 1 is a perspective view of a first embodiment of the present invention. More specifically, FIG. 1 is a perspective view of a pouch formed of film having an irregularly textured inner surface.
- FIG. 2 is a detail of FIG. 1 as indicated by dotted area 20 in FIG. 1.
- FIG. 3 is the detail shown in FIG. 2 of dotted area 20 showing an alternate embodiment construction.
- FIG. 4 is the detail shown in FIG. 2 of dotted area 20 showing a second alternate embodiment construction.
- FIG. 5 is a section taken through FIG. 2 as indicated in FIG. 2 showing a possible embodiment construction.
- FIG. 6 is the same section shown in FIG. 5 showing an alternate embodiment construction.
- FIG. 7 is the same section shown in FIG. 5 showing a second alternate embodiment construction.
- FIG. 8 is a section taken through FIG. 3 as indicated in FIG. 3 showing a possible embodiment construction.
- FIG. 9 is a section taken through the first embodiment shown in FIG. 1 as indicated in FIG. 1.
- FIG. 10 is the same section shown in FIG. 9 showing an alternate embodiment construction.
- FIG. 11 shows how the profile shown in FIG. 7 might contact a smooth surface.
- FIG. 12 show another alternative embodiment.
- a first embodiment of the present invention as shown in FIG. 1, comprises sheets 22 and 24 , welded together along side seams 26 and 28 , and bottom seam 30 to form pouch 31 .
- FIGS. 2, 3 and 4 show three example constructions for dotted area 20 defined in FIG. 1. All three show raised irregular surface 29 (FIG. 1) with differences between constructions comprising primarily the distribution and form of irregularities.
- Raised irregular surfaces such as 30 , 32 and 34 , shown in FIGS. 2, 3 and 4 respectively, form air passages 36 within pouch 31 when the interior of sheet 24 is formed flat, as shown in FIG. 9, or is formed with a raised irregular surface 41 , as shown in FIG. 10.
- Raised irregular surfaces 30 , 32 or 34 may also form air passages 38 when contacting smooth surfaces 40 of pouch 31 contents, as shown in FIG. 11.
- Air passages 36 and 38 allow circulation of gasses within pouch 31 .
- this circulation may be used to more fully evacuate pouch 31 when pulling a vacuum from end 42 of pouch 31 , or to help preserve pouch 31 contents, such as the use of C 0 2 sealed inside a closed container to help preserve apples.
- Air passages 36 and 38 may also help to provide for a more uniform environment to help more evenly preserve and protect pouch 31 contents.
- Raised irregular surfaces 30 , 32 and 34 shown in FIGS. 2, 3 and 4 respectively, as well as air passages 36 and 38 may also help provide physical protection for pouch 31 contents if pouch 31 and its contents are struck against other objects, or pouch 31 and its contents are rested for periods of time against adjacent surfaces.
- Raised irregular surface 29 may be continuously irregular, as a few examples; like the surface of sandpaper (see example—FIG. 6) or the bubbles on the surface of beer foam (see example—FIG. 5); or raised irregular surface 29 may have spaced apart irregular protuberances from an otherwise regular surface (see example—FIGS. 3 and 8).
- Raised irregular surfaces may have orientation such as the surface of a steel wool pad which has parallel linear orientation of irregularly undulating elongated fibers. Such orientation may also be in the form of a star burst, or a splay, or a weave, etc.
- Raised irregular surface 29 may be: irregular in plan view but uniform in profile; or irregular in profile but regular in plan view; or irregular in both plan and profile. Such use of the terms “irregular” or “raised irregular surfaces”herein shall encompass all of the above descriptions.
- Sheet 24 may be fabricated in many different ways. As an example, it may be embossed through a set of rollers or in a press. This would produce a sheet with texture on both sides and a relatively uniform material thickness across the entire sheet (see examples—FIGS. 5, 6 and 8 ). Alternatively, sheet 24 might be textured on one side only (see FIG. 7) through a set of rollers or by a press or by other means. Sheet 24 might be textured on both sides through rollers or a press or other means. Any of the above might be done during a lamination process. Many other fabrication techniques also might be employed in conjunction with the above or as an alternative.
- irregular texturing may have minimal impact on such transparency, particularly because such irregular texturing generally is in close proximity to the inside surface of sheet 22 and the contents it may contact which are to be viewed.
- raised irregular surface 29 might be interrupted where and if in any way it impaired desired transparency.
- Raised irregular surface 29 of sheet 22 may also reduce after freezing sticking between pouch 31 and its contents. This is because there is generally less surface contact between pouch 31 and its contents than if the interior of pouch 31 were formed flat without texture. As an example, a flat surface resting against another flat surface may have near 100 percent contact, whereas a properly designed and engineered raised irregular surface may have less than 80 percent, and possibly less than 60 percent, surface contact area relative to the full exposed surface area, when contacting a flat surface (see FIG. 9).
- raised irregular surfaces may also provide a wider variety of surface contact points for package contents with each contact point having its own unique individual contact area and amount of pressure. This in turn may provide gas circulation with a more diverse and natural flow.
- Raised irregular surfaces when compared to raised regular surfaces, cannot replicate a regular pattern on the outer surfaces of the objects they may contact.
- objects placed in pouches having raised regular interior surfaces may have the interior pattern of the raised regular surfaces imprinted on the object's exterior caused by freezing, cooking, storage, contact pressure against other objects, or other processes. Because raised irregular surfaces have no regular pattern, they can leave no imprint of an unnatural regular pattern where they contact objects.
- Undesirable replication of raised regular surface patterns may be caused by the soft surfaces of packaged contents, or by microbes, or by freezer burn, or by uneven heating during cooking, or by chemical reaction, or by other reasons.
- Raised irregular surfaces may also reduce freezer burn by more uniformly and naturally distributing moisture around contents being contacted by the raised irregular surfaces, when compared to raised regular surfaces or flat surfaces. Also, if freezer burn does occur to any degree and replicates the raised irregular surface on the surfaces of package contents, such replication is far less noticeable due to the more natural appearance of the irregular surface when compared to regular and predictable surface patterns.
- Raised irregular surfaces may be used in a variety of applications including applications for both home and commercial use. They may be used in wrapping sheet, pouches, bags, carton interiors, or in other packaging vehicles. This may include such specific applications as Ziploc® type bags, Saran® Wrap type food wrapping, Food Saver® type vacuum and heat sealable bags and rolls, etc.
- a gas-impermeable heat-sealable laminate may be desirable for both sheets 22 and 24 .
- Sheet 22 might be fabricated with outer layer 44 (FIG. 9) made of Mylar® and inner layer 46 (FIG. 9) made of polypropylene, with the texture being added using embossing rollers either during, before, or after the lamination process.
- outer layer 44 FIG. 9
- inner layer 46 FIG. 9
- Other processes and materials are alternatively possible including using three or more laminate layers etc.
- Raised irregular surfaces described herein may be constructed at any scale.
- raised irregular surface 30 in FIG. 2 might have a surface texture of sandpaper and might have texture comparable in scale to a grit of sandpaper ranging from 40 grit to 400 grit, depending on the application.
- Raised irregular surfaces may also be beneficial when food pouches are either boiled or microwave. This is because, as explained earlier, there may be less surface contact and less predictable surface contact between the pouches and their contents thus allowing more complete contact between liquid and solid contents of the pouch during the cooking process.
- Raised irregular surfaces when used with vacuum pouches, may provide more complete evacuation of the pouch when compared with raised regular surfaces or flat surfaces. This is because the non uniformity of raised irregular surfaces may provide more complete and extensive pathways for gasses to evacuate.
- raised irregular surfaces may be used throughout the interior of a bag or pouch or container or on one side only or on a portion of one or two sides, depending on the needs and economics of the application.
- Such surfaces may be interrupted as shown in FIG. 4 by interruptions 46 to: ease the marking of containers, or to create measuring lines, or for creating a labeling surface, or for increased transparency, etc.
- a bag might be formed using sheet material or a fabricated tube or by other means.
- the bag would have raised irregular surfaces on at least part of its interior. Contents would be placed in the bag and subsequently air would be withdrawn from the bag relying at least in part on evacuation air channels formed between the raised irregular surfaces and surfaces they contact. Such evacuation could be done through the top entrance of the bag, or through a hole in the bag, or by other means.
- the bag would then be sealed air tight using: heat welding, adhesives, mechanical fasteners, or other means.
- the bag then might be: stored at room temperature, put into cold storage, boiled in water, frozen, put into additional packaging, or some combination of the above, possibly with other processes and/or materials involved. As an example, leftovers might be put into the bag, and the bag stored in the freezer. Later the bag might be removed from the freezer and put into boiling water to heat the contents, and then the bag might be cut open and the contents put onto a plate for serving.
- An alternative example of embodiment use would use sheet material to be sealed around contents and air withdrawn through an edge or hole in part relying on air passages formed by raised irregular surfaces contacting other surfaces.
Abstract
Description
- The present invention is directed to flexible packaging and method which is more efficient and effective than current designs in containing and protecting foods and other articles, and in particular has specific advantages when used in conjunction with evacuated containment.
- Flexible packaging used for containing foods and other articles is widely used throughout the world.
- In recent years, one market has emerged which offers home users advantages which earlier, only commercial users had enjoyed. Vacuum packaging using flexible film at one time required expensive and cumbersome commercial equipment. Today several companies offer attractively priced and relatively compact vacuum packaging products for home use. These products offer home users the ability to store foods and other articles for periods far exceeding packaging which does not utilize evacuated packaging.
- Examples of this new home use equipment may be found in U.S. Pat. Nos. 4,561,925, 4,941,310, 5,048,269, 5,352,323, 5,784,862, 5,893,822, and 6,256,968. Essentially, this new equipment can be broken into two subcategories; the machinery that performs the evacuation and sealing operations; and the packaging materials that ultimately contain the articles being packaged. The present application is primarily directed to such packaging materials. As will be suggested in the following specification, however, much broader uses are apparent for the present inventions.
- Earliest flexible packaging utilized single ply flexible films or sheet stock to contain goods. Closure was accomplished by wrapping goods, such as with clear plastic films, or by twist ties, overlapping closures, clips, molded in zippers, or by other means. Later improvements to closures included heat welding pouches of single ply material around stored articles.
- An improvement over single ply materials used two or more ply laminate sheets which allowed for a heat sealable layer backed by a gas impermeable layer, thus preventing oxygen or other harmful gasses from seeping in and contaminating package contents. To further reduce damage done by undesirable gasses, vacuums were used to reduce package gas content, and where appropriate, to help retard microbe growth.
- However, it was difficult to pull a vacuum in a pouch which had smooth inner walls because the inner walls of the container would choke around the orifice where the vacuum was being pulled and retard or prevent the rest of the container from being evacuated.
- Two inventors in U.S. Pat. Nos. 2,778,171, and 4,756,422 (Re. 34,929) suggested ways to prevent this. Both utilized raised regular patterns embossed or pressed into the inside container surfaces. These caused gas evacuation channels leading to interior parts of the container to be formed which generally allowed more complete evacuation of the container to occur.
- A problem which remains, however, is that even with the protrusions caused by these regular patterns, there is a still large amount of predictable surface contact between package contents and the flexible sheet which forms part or all of the container. This can cause sticking of packaging to contents after freezing, and result in artificial looking patterning on the outside of foods or other contained articles after freezing or cooking. It can also lead to small pockets between the container and its contents harboring moisture, microbes or harmful gasses.
- FIG. 1 is a perspective view of a first embodiment of the present invention. More specifically, FIG. 1 is a perspective view of a pouch formed of film having an irregularly textured inner surface.
- FIG. 2 is a detail of FIG. 1 as indicated by dotted
area 20 in FIG. 1. - FIG. 3 is the detail shown in FIG. 2 of dotted
area 20 showing an alternate embodiment construction. - FIG. 4 is the detail shown in FIG. 2 of dotted
area 20 showing a second alternate embodiment construction. - FIG. 5 is a section taken through FIG. 2 as indicated in FIG. 2 showing a possible embodiment construction.
- FIG. 6 is the same section shown in FIG. 5 showing an alternate embodiment construction.
- FIG. 7 is the same section shown in FIG. 5 showing a second alternate embodiment construction.
- FIG. 8 is a section taken through FIG. 3 as indicated in FIG. 3 showing a possible embodiment construction.
- FIG. 9 is a section taken through the first embodiment shown in FIG. 1 as indicated in FIG. 1.
- FIG. 10 is the same section shown in FIG. 9 showing an alternate embodiment construction.
- FIG. 11 shows how the profile shown in FIG. 7 might contact a smooth surface.
- FIG. 12 show another alternative embodiment.
- Prior art as explained earlier has utilized raised regular and predictable patterns on the inside of evacuated flexible wall packaging primarily to help in evacuation. Such patterns have included waffle patterns, parallel lines, divergent lines, patterned dimples, etc.
- A first embodiment of the present invention, as shown in FIG. 1, comprises
sheets side seams bottom seam 30 to formpouch 31. - FIGS. 2, 3 and4 show three example constructions for dotted
area 20 defined in FIG. 1. All three show raised irregular surface 29 (FIG. 1) with differences between constructions comprising primarily the distribution and form of irregularities. - Raised irregular surfaces, such as30, 32 and 34, shown in FIGS. 2, 3 and 4 respectively, form
air passages 36 withinpouch 31 when the interior ofsheet 24 is formed flat, as shown in FIG. 9, or is formed with a raised irregular surface 41, as shown in FIG. 10. Raisedirregular surfaces air passages 38 when contactingsmooth surfaces 40 ofpouch 31 contents, as shown in FIG. 11. -
Air passages pouch 31. As examples, this circulation may be used to more fully evacuatepouch 31 when pulling a vacuum fromend 42 ofpouch 31, or to help preservepouch 31 contents, such as the use of C0 2 sealed inside a closed container to help preserve apples.Air passages pouch 31 contents. - Raised
irregular surfaces air passages pouch 31 contents ifpouch 31 and its contents are struck against other objects, orpouch 31 and its contents are rested for periods of time against adjacent surfaces. - Raised irregular surface29 (see FIG. 1) may be continuously irregular, as a few examples; like the surface of sandpaper (see example—FIG. 6) or the bubbles on the surface of beer foam (see example—FIG. 5); or raised
irregular surface 29 may have spaced apart irregular protuberances from an otherwise regular surface (see example—FIGS. 3 and 8). Raised irregular surfaces may have orientation such as the surface of a steel wool pad which has parallel linear orientation of irregularly undulating elongated fibers. Such orientation may also be in the form of a star burst, or a splay, or a weave, etc. - Raised irregular surface29 (see FIG. 1) may be: irregular in plan view but uniform in profile; or irregular in profile but regular in plan view; or irregular in both plan and profile. Such use of the terms “irregular” or “raised irregular surfaces”herein shall encompass all of the above descriptions.
-
Sheet 24 may be fabricated in many different ways. As an example, it may be embossed through a set of rollers or in a press. This would produce a sheet with texture on both sides and a relatively uniform material thickness across the entire sheet (see examples—FIGS. 5, 6 and 8). Alternatively,sheet 24 might be textured on one side only (see FIG. 7) through a set of rollers or by a press or by other means.Sheet 24 might be textured on both sides through rollers or a press or other means. Any of the above might be done during a lamination process. Many other fabrication techniques also might be employed in conjunction with the above or as an alternative. - Where the transparency of
sheet 22 is desirable, irregular texturing may have minimal impact on such transparency, particularly because such irregular texturing generally is in close proximity to the inside surface ofsheet 22 and the contents it may contact which are to be viewed. Alternatively, raisedirregular surface 29 might be interrupted where and if in any way it impaired desired transparency. - Raised
irregular surface 29 ofsheet 22 may also reduce after freezing sticking betweenpouch 31 and its contents. This is because there is generally less surface contact betweenpouch 31 and its contents than if the interior ofpouch 31 were formed flat without texture. As an example, a flat surface resting against another flat surface may have near 100 percent contact, whereas a properly designed and engineered raised irregular surface may have less than 80 percent, and possibly less than 60 percent, surface contact area relative to the full exposed surface area, when contacting a flat surface (see FIG. 9). - When compared to flat or regular raised surfaces, raised irregular surfaces may also provide a wider variety of surface contact points for package contents with each contact point having its own unique individual contact area and amount of pressure. This in turn may provide gas circulation with a more diverse and natural flow.
- Raised irregular surfaces, when compared to raised regular surfaces, cannot replicate a regular pattern on the outer surfaces of the objects they may contact. As an example, objects placed in pouches having raised regular interior surfaces, may have the interior pattern of the raised regular surfaces imprinted on the object's exterior caused by freezing, cooking, storage, contact pressure against other objects, or other processes. Because raised irregular surfaces have no regular pattern, they can leave no imprint of an unnatural regular pattern where they contact objects.
- Undesirable replication of raised regular surface patterns may be caused by the soft surfaces of packaged contents, or by microbes, or by freezer burn, or by uneven heating during cooking, or by chemical reaction, or by other reasons.
- Raised irregular surfaces may also reduce freezer burn by more uniformly and naturally distributing moisture around contents being contacted by the raised irregular surfaces, when compared to raised regular surfaces or flat surfaces. Also, if freezer burn does occur to any degree and replicates the raised irregular surface on the surfaces of package contents, such replication is far less noticeable due to the more natural appearance of the irregular surface when compared to regular and predictable surface patterns.
- Raised irregular surfaces may be used in a variety of applications including applications for both home and commercial use. They may be used in wrapping sheet, pouches, bags, carton interiors, or in other packaging vehicles. This may include such specific applications as Ziploc® type bags, Saran® Wrap type food wrapping, Food Saver® type vacuum and heat sealable bags and rolls, etc.
- In certain applications it may be desirable to combine raised irregular surfaces with laminated sheets. As an example, in
pouch 31 shown in FIG. 1, where a vacuum may be pulled and thereafter a heat welded seal made onend 42, a gas-impermeable heat-sealable laminate may be desirable for bothsheets Sheet 22 might be fabricated with outer layer 44 (FIG. 9) made of Mylar® and inner layer 46 (FIG. 9) made of polypropylene, with the texture being added using embossing rollers either during, before, or after the lamination process. Other processes and materials are alternatively possible including using three or more laminate layers etc. - Raised irregular surfaces described herein may be constructed at any scale. As just one example, raised
irregular surface 30 in FIG. 2 might have a surface texture of sandpaper and might have texture comparable in scale to a grit of sandpaper ranging from 40 grit to 400 grit, depending on the application. - Raised irregular surfaces may also be beneficial when food pouches are either boiled or microwave. This is because, as explained earlier, there may be less surface contact and less predictable surface contact between the pouches and their contents thus allowing more complete contact between liquid and solid contents of the pouch during the cooking process.
- Raised irregular surfaces, when used with vacuum pouches, may provide more complete evacuation of the pouch when compared with raised regular surfaces or flat surfaces. This is because the non uniformity of raised irregular surfaces may provide more complete and extensive pathways for gasses to evacuate.
- Properly designed raised irregular surfaces, by reducing surface contact between packaging and package contents as explained earlier, may also reduce the chances of small, inaccessible pockets being formed between packaging and packaging contents when compared to raised regular surfaces and flat surfaces. Such pockets might house moisture, or microbes, or other things deleterious to package contents.
- As shown in FIGS. 9 and 10, in pouches, such as illustrated in FIG. 1, raised irregular surfaces may be used throughout the interior of a bag or pouch or container or on one side only or on a portion of one or two sides, depending on the needs and economics of the application. Such surfaces may be interrupted as shown in FIG. 4 by
interruptions 46 to: ease the marking of containers, or to create measuring lines, or for creating a labeling surface, or for increased transparency, etc. - Use of the embodiments described herein may vary. As just one example, a bag might be formed using sheet material or a fabricated tube or by other means. The bag would have raised irregular surfaces on at least part of its interior. Contents would be placed in the bag and subsequently air would be withdrawn from the bag relying at least in part on evacuation air channels formed between the raised irregular surfaces and surfaces they contact. Such evacuation could be done through the top entrance of the bag, or through a hole in the bag, or by other means. The bag would then be sealed air tight using: heat welding, adhesives, mechanical fasteners, or other means. The bag then might be: stored at room temperature, put into cold storage, boiled in water, frozen, put into additional packaging, or some combination of the above, possibly with other processes and/or materials involved. As an example, leftovers might be put into the bag, and the bag stored in the freezer. Later the bag might be removed from the freezer and put into boiling water to heat the contents, and then the bag might be cut open and the contents put onto a plate for serving.
- An alternative example of embodiment use would use sheet material to be sealed around contents and air withdrawn through an edge or hole in part relying on air passages formed by raised irregular surfaces contacting other surfaces.
- Whether one or two walls of a bag or pouch use raised irregular surfaces on their interiors, such surfaces may help in opening the bag as such surfaces space apart the two edges at the bag entrance and thus make it easier to separate the top of the bag for opening and loading.
- It is believed that a surface texture resembling that of 60 grit sandpaper and having a texture depth from peak to adjacent valley of between 0.004 and 0.029 inches offers advantages over other designs for use in evacuated pouches and other packaging used in the home or for commercial purposes. These advantages include relatively rapid air evacuation and good economics in production using current commercially available packaging films and manufacturing techniques. It is also believed for similar reasons that raised irregular surfaces in general that practice the present inventions gain advantage if their depth from peak to adjacent valley is at least 0.001 inches and with particular advantage when this dimension is more than 0.004 inches. It is further believed that there are distinct advantages to applying raised irregular textures to most or all of both sheets forming a pouch, or to most or all of perimeter walls forming packaging (more than 50% of the interior surface), with such advantages including, but not limited to, reduced chance of imprinting undesirable regular patterning on package contents and reduction of sticking of packaging to package contents after freezing. None of the specifications contained in this paragraph are to be considered limitations of the present inventions, but merely as guidelines where advantages may be gained.
- Although evacuation and heat sealing are not inherently necessary to practice the present inventions, both gain advantages, as described herein, when used in conjunction with the present inventions. Also, packages using the present inventions need not necessarily be frozen, cooked, refrigerated, or stored. However, packaging undergoing each of these processes may gain advantages as described herein from practicing the present invention. Packaging practicing the present invention may be sealed shut using heat welding, adhesives, static attraction, mechanical fasteners, or by other means.
- What has been described herein are exemplary embodiments that incorporate the present invention. One knowledgeable in the art will readily recognize that many variations are possible from the descriptions herein without departing from the nature and spirit of the invention. As but a few brief examples: surface textures such as might be found on concrete or macadam roadway or leather might be used; different materials might be employed such as ceramics, metal foils or laminates using metal foils; the raised irregular surfaces might be used on the interiors of cartons or containers either in conjunction with vacuum or with freezing or with cooking or not; etc.
- Such variations should be incorporated by inference into the teachings herein. Accordingly, the protection afforded this application shall be limited only by accepted claims and their legal equivalents.
Claims (22)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US10/195,610 US20040007494A1 (en) | 2002-07-15 | 2002-07-15 | Apparatus and method to more effectively vacuum package foods and other objects |
EP03090213A EP1382547B1 (en) | 2002-07-15 | 2003-07-15 | Apparatus and method to more effectively vacuum package foods and other objects |
DE60312604T DE60312604T2 (en) | 2002-07-15 | 2003-07-15 | Apparatus and method for more efficient vacuum packaging of food or other articles |
AT03090213T ATE357383T1 (en) | 2002-07-15 | 2003-07-15 | APPARATUS AND METHOD FOR MORE EFFICIENT VACUUM PACKAGING OF FOOD OR OTHER ITEMS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/195,610 US20040007494A1 (en) | 2002-07-15 | 2002-07-15 | Apparatus and method to more effectively vacuum package foods and other objects |
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US20040007494A1 true US20040007494A1 (en) | 2004-01-15 |
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US10/195,610 Abandoned US20040007494A1 (en) | 2002-07-15 | 2002-07-15 | Apparatus and method to more effectively vacuum package foods and other objects |
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US (1) | US20040007494A1 (en) |
EP (1) | EP1382547B1 (en) |
AT (1) | ATE357383T1 (en) |
DE (1) | DE60312604T2 (en) |
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US20040231294A1 (en) * | 2001-04-17 | 2004-11-25 | Shannon Daniel P. | Vacuum sealable bag apparatus and method |
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US20050065007A1 (en) * | 2003-03-05 | 2005-03-24 | Tilia International, Inc. | Method for manufacturing a sealable bag having an integrated valve structure for use in vacuum packaging |
US20050070412A1 (en) * | 2003-03-05 | 2005-03-31 | Tilia International, Inc. | Method for manufacturing a sealable bag having an integrated zipper for use in vacuum packaging |
US6932509B2 (en) | 2002-06-28 | 2005-08-23 | S. C. Johnson Home Storage, Inc. | Recloseable storage bag with secondary closure members |
US20050220373A1 (en) * | 2003-12-16 | 2005-10-06 | Hongyu Wu | Flexible composite bag for vacuum sealing |
US20050220942A1 (en) * | 2004-03-15 | 2005-10-06 | Hongyu Wu | Easy to peal vacuum packaging bags |
US20050286808A1 (en) * | 2004-06-29 | 2005-12-29 | Zimmerman Dean A | Flexible storage bag |
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Also Published As
Publication number | Publication date |
---|---|
EP1382547B1 (en) | 2007-03-21 |
EP1382547A1 (en) | 2004-01-21 |
DE60312604D1 (en) | 2007-05-03 |
DE60312604T2 (en) | 2007-11-29 |
ATE357383T1 (en) | 2007-04-15 |
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