US20090257687A1 - Package fof cooking foodstuffs having high-moisture content - Google Patents
Package fof cooking foodstuffs having high-moisture content Download PDFInfo
- Publication number
- US20090257687A1 US20090257687A1 US12/101,331 US10133108A US2009257687A1 US 20090257687 A1 US20090257687 A1 US 20090257687A1 US 10133108 A US10133108 A US 10133108A US 2009257687 A1 US2009257687 A1 US 2009257687A1
- Authority
- US
- United States
- Prior art keywords
- package
- ply
- paper
- foodstuffs
- vent
- 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
Images
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
- 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
- B65D81/34—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package
- B65D81/3446—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
- B65D81/3461—Flexible containers, e.g. bags, pouches, envelopes
Definitions
- the present invention relates to packaging. More specifically, the present invention relates to a laminated package usable in microwave cooking applications.
- microwaves While once relegated to heating up leftovers and popping an occasional bag of popcorn, microwaves have now become a cooking staple in many homes. Whether making an entire meal or zapping a side dish, microwaves provide a quick and easy alternative to conventional cooking methods.
- microwave cooking is not without its drawbacks. Microwaves tend to dry out food that should be moist and tend to soften foods that should be crisp. As a result, some flavor and appeal may be lost when cooking in the microwave. Moreover, the microwave product may lose some of the nutritional value of its conventionally cooked counterpart.
- packages have become available that are designed for microwave cooking.
- the packaging is relatively standard packaging for a frozen product, i.e., it is designed to be stored in the freezer with foodstuffs therein, but can then be transferred to the microwave for cooking.
- packages consist of a thermoplastic laminate having multiple layers of thermoplastic materials.
- thermoplastic layers In the conventional packaging, foodstuffs contained within the package contact one of the thermoplastic layers.
- the heated-up products contacting the thermoplastic deform the thermoplastic. This deformation may be manifested as scorch-marks, marring, bubbling, charring or the like.
- This deformation of the thermoplastic may or may not create a food contamination problem, but at the very least, the visual effect of the bubbled, melted plastic is unappealing to a user. In fact some users assume the product is bad based on the visual deformities and may refuse to eat the product, or worse, refuse to again buy the product.
- the present invention addresses the foregoing needs in the art by providing an improved package for microwave cooking. It is also contemplated that the packaging could be used in other types of cooking, for example, cooking in a conventional oven
- a package in one aspect of the present invention, includes an inner ply and an outer ply laminated to the inner ply.
- the inner ply contact foodstuffs contained within the package.
- the inner ply is a paper-based product having a wet tensile strength property such that it will not deteriorate in the presence of high-moisture foods.
- the paper-based product also has a scorching temperature above the temperature of the foodstuffs when heated.
- the outer ply includes a polymer film.
- a multi-layer package for use in cooking foodstuffs includes an inner ply, an outer ply, and a vent.
- the inner ply contacts the foodstuffs and is a paper-based product having a scorching temperature above a maximum temperature reached by the foodstuffs during microwave heating of the foodstuffs.
- the outer ply is laminated to the inner ply and is a polymer film.
- the vent is disposed in the pressure to relieve pressure within the package during microwave cooking.
- FIG. 1A is a representation of a conventional known microwave package.
- FIG. 1B is a sectional view of the area indicated 1 B in FIG. 1A .
- FIG. 2A is a perspective view of a microwave cooking package according to a preferred embodiment of the present invention.
- FIG. 2B is a cross-sectional view of the microwave cooking package of FIG. 2A taken along sectional line 2 B.
- FIG. 3 is a cross-sectional view of a microwave cooking package according to another embodiment of the present invention.
- FIG. 4 is a table showing experimental test results for cooking packages made in accordance with the present invention.
- a conventional package 10 is illustrated in FIGS. 1A and 1B .
- a conventional package 10 has a multi-ply construction in which an inner ply 12 , i.e., a ply that contacts the product contained within the package, is a thermoplastic.
- An outer ply 12 laminated to the inner ply 10 also is conventionally a thermoplastic material on which instructions, branding, and the like can be printed.
- the inner ply contacting the food often becomes deformed.
- FIGS. 2A and 2B An improved microwave-cooking package 20 according to a first embodiment of the invention is illustrated in FIGS. 2A and 2B . Similar to the conventional packaging, the package 20 has a multi-ply construction. Specifically, an inner ply 22 is disposed for contacting foodstuffs contained within the package and an outer ply 24 is disposed on a side of the inner ply 22 opposite the foodstuffs. The inner ply 22 and the outer ply 24 preferably are laminated to each other.
- the inner ply 22 preferably is a paper-based layer and the outer ply 24 preferably is a polymer film or a thermoplastic.
- the paper-based product used to form the inner ply preferably is one of Kraft paper, bleached Kraft paper, parchment paper, greaseproof paper, glassine paper, rice paper, or cellophane.
- the inventor has conducted tests with the following commercially available papers: Reynolds parchment 10900-01331, Fox River WOGR, and Wausau Nos. GG 243W00, GN404838, GF323182, GF235174, GN214933, and GF205204.
- the paper product comprising the inner ply 22 has a wet tensile strength between about 10% and about 50%. More preferably, the wet tensile strength of the inner ply is between about 20% and about 30%.
- the inventor has found that when the inner ply is formed of a paper product having a wet tensile strength that is less than about 10%, the package will deteriorate, particularly when higher moisture foods, namely foods having a moisture content of between about 65% and about 85% are contained in the package.
- the package of the invention can be used with foods having moisture contents in this range, and more preferably with foods in the range of about 70% to about 75% moisture content. Paper products having higher wet tensile strength products also can be used, although such paper products tend to be more expensive.
- the paper-based product comprising the inner layer 22 preferably also is characterized in that it has a scorching temperature that is above a maximum temperature the foodstuffs contained within the package will reach during cooking. Accordingly, burning or charring of the inner ply 12 will not occur when the package is heated in the microwave.
- the scorching temperature of the inner layer is above about 290° F.
- the package 20 according to the foregoing description is particularly well-suited for use with foodstuffs having high-moisture content resulting from their inclusion of sauces or excess water used for steaming the product.
- sauces or excess water used for steaming the product As a result of their high-moisture content, when the products contained within the package 20 are heated, steam is created that inflates the package.
- the package according to the present invention preferably includes a venting mechanism that allows the steam to be exhausted before the package becomes deformed or, in an extreme case, explodes.
- venting is partially accomplished by virtue of the characteristics of the inner ply.
- the porosity of the paper product comprising the inner ply is such that the steam generated in the package can escape through the pores in the paper.
- paper products having a porosity of between about 29 and about 15,000 sec/100 ml are believed to be effective in such an embodiment.
- FIGS. 2A and 2B illustrate one preferred embodiment in which the steam vented through the pores in the inner ply is subsequently vented from the package between the inner ply and the outer ply.
- a channel 26 is formed between the inner ply 22 and the outer ply 24 .
- the channel 26 preferably is formed by de-laminating a portion between the inner ply 22 and the outer ply 24 .
- the channel 26 is formed by omitting the adhesive used to laminate the first and second plies.
- the channel preferably terminates at an outlet 28 , which is open to the atmosphere.
- the outlet may be disposed at an edge of the package, or may be in any other position on the package.
- steam exhausts through the pores of the inner ply 10 , enters the channel 20 and escapes the package through the opening 22 .
- the channel 20 could have more than one outlet, for example, on opposite ends of the package.
- the channel could extend substantially along either or both of a length and width of the package.
- the outlet may be always open to the atmosphere, or it may be selectively opened.
- the outlet 28 may include a seal that is sealed until some event occurs to open or break the seal.
- the seal may be resealable, or it may be a single-use seal.
- the seal is pressure activated such that when sufficient pressure builds up behind the seal, the seal will open and allow excess steam to escape.
- the venting mechanism acts as a bleed valve behind which a relatively large amount of pressure must build up before any of the pressure is bled off.
- the seal may open at a relatively low pressure, whereas when it is desirable to maintain an amount of the steam in the package during cooking, for example, to steam the contents of the package, the seal opens at a relatively higher pressure.
- the seal comprising the outlet may be formed in a number of ways.
- the seal may be formed by including a one-way valve at the outlet which allows steam to exhaust.
- an adhesive is used that creates a temporary bond between the inner ply and the outer ply at the outlet.
- the bond is temporary in that a sufficient force, i.e., resulting from an elevated pressure, in the channel upstream of the bond will overcome the adhering force of the adhesive, thus causing the bond to break.
- the inner ply and the outer ply thus separate and steam exhausts.
- the bond preferably is sufficiently strong that the bond is sealed at all times other than cooking, for example, to prevent leaking from the package and/or to prevent contaminants from entering the package.
- a temporary bond also may be formed to close the channel, but the bond in this embodiment comprises a heat seal that is broken at a predetermined temperature obtained by the package and/or the contents within the package, i.e., a predetermined venting temperature.
- the outlet includes a heat seal that melts or de-adheres when the package and/or the contents of the package reach the venting temperature.
- the heat seal may consist of a pattern in which the adhesive between the inner and outer plies is arranged.
- the heat seal could comprise more than just the outlet 28 . In fact, the heat seal could form any or all of the channel 26 .
- steam will only pass through the heat-sealed portion of the package when a sufficient temperature is reached to open the heat seal.
- steam passes through the inner ply of the laminate packaging material through pores inherent in the inner ply.
- the inner ply may be perforated or otherwise manufactured to include pores, for example, micropores.
- a slit or similar opening may be formed through the inner ply in communication with the channel 26 .
- the porosity of the paper is sufficiently low that steam will not permeate the paper.
- a different venting mechanism preferably is provided that selectively allows and prohibits passage of steam there through, i.e., to selectively vent steam from or retain steam in the package.
- An exemplary configuration of this embodiment is illustrated in FIG. 3 .
- a heat seal 36 is provided between opposing inner plies 32 that define the space in which foodstuffs are contained. Outer, polymer plies 34 are laminated to a side of the inner plies opposite the side contacting the foodstuffs. In this embodiment, the heat seal 36 is broken when the temperature within the package reaches a venting temperature.
- the heat seal in this embodiment is similar to the heat seal described above, except that instead of being formed between the plies comprising the laminate material, i.e., between the inner and outer plies, the heat seal preferably is formed between separate laminate layers.
- the heat seal illustrated in FIG. 3 is formed at a seam of the package. More particularly, the heat seal comprises some or all of the adhesive used to secure opposite sides of the package to each other or used to close the package after filling. When this preferred package is heated in the microwave, the adhesive melts and the pressure within the package separates the previously-sealed opposing inner plies, thus allowing the package to vent.
- the heat seal may be formed at some other position on the package. In these other embodiments, an aperture or the like is provided through the inner ply through which steam can be exhausted.
- an aperture may be formed directly through all plies comprising the package, and steam is allowed to vent through this aperture.
- the aperture may be completely open during cooking, for example, a tab could be applied to cover the whole prior to use, which tab is removed by a user prior to cooking.
- the aperture may uncover during the cooking process.
- a cover may cover the aperture by virtue of a heat sensitive adhesive that melts during cooking. The melting of the adhesive combined with the pressure within the container forces the aperture to become uncovered, thereby venting the package.
- any number of adhesives may be used to seal the package, to laminate the layers, and/or to create the destructible heat seal.
- the invention contemplates the use of water-based, solvent-based, hot melt, and solventless adhesives
- Some commercial adhesives tested by the inventor include H. B. Fuller WC 3460 ZZ; H. B. Fuller PWF-3007; Royal 20394; Royal 20123; Hycar 26288; Hycar 26315; Dow Primacor 5986, 5990, 59801, and 59901; and Dow HypodTM DPOD 4501 and 8501.
- any adhesive that could contact the food stuffs contained within the package should preferably be safe for human consumption.
- the preferred package according to the invention is formed by laminating two layers or plies.
- the lamination preferably is maintained using an adhesive.
- Solvent-based, solvent-free, and water-based adhesives are known in the art, and may be used to bond the plies 12 , 14 .
- the inventors have found, however, that water-based adhesives may be less desirable when the product contained in the package has a relatively high moisture content, as the water-based adhesives tend to re-liquefy during heating, thus resulting in delamination of the plies.
- the above-mentioned adhesives also may be used to form the vents and/or heat seals described above.
- the outer ply preferably is a polymer film. Such films are generally preferred for the outer ply because their appearance, especially when printed on, is preferable.
- the polymer film preferably is laminated to the inner, paper ply.
- the polymer film may be an oriented polyester (OPET) film, such as DuPont Mylar 813/48 gauge, EB 11/48 gauge, or 822/48 gauge.
- the polymer film may be an oriented polypropylene (OPP) film such as AET films AQS/70 gauge.
- OPP oriented polypropylene
- the invention is not limited to packages having two plies. It is anticipated that additional plies also may be used. Moreover, one or more plies used in the preferred microwave package may be coated, for example, to aid in lamination and/or to provide a barrier layer. When adhesives are used either during formation of the package, such a barrier layer may be required to ensure that the adhesives cannot contact the foodstuffs, for example, because the adhesives are not FDA-approved.
- both plies could be made of paper.
- the package may be more environmentally-friendly.
- biodegradable adhesive also may be desirable.
- the package also may include only a single ply.
- the single ply would be the inner, paper ply.
- the inner ply preferably would be at least partially coated with an adhesive that would facilitate formation of the single ply into a package or a pouch.
- the adhesive preferably would be heat-sensitive and would melt at a predetermined temperature to vent the container, or alternative venting mechanisms, such as those described above, could be used.
- FIG. 4 illustrates a number of clinical trials for various paper/adhesive/polymer combinations.
Abstract
Description
- The present invention relates to packaging. More specifically, the present invention relates to a laminated package usable in microwave cooking applications.
- While once relegated to heating up leftovers and popping an occasional bag of popcorn, microwaves have now become a cooking staple in many homes. Whether making an entire meal or zapping a side dish, microwaves provide a quick and easy alternative to conventional cooking methods.
- Although generally quicker and easier than conventional cooking, microwave cooking is not without its drawbacks. Microwaves tend to dry out food that should be moist and tend to soften foods that should be crisp. As a result, some flavor and appeal may be lost when cooking in the microwave. Moreover, the microwave product may lose some of the nutritional value of its conventionally cooked counterpart.
- To combat the above-described problems associated with microwave cooking, several products and methods have been tried. For example a number of packages have become available that are designed for microwave cooking. In most applications, the packaging is relatively standard packaging for a frozen product, i.e., it is designed to be stored in the freezer with foodstuffs therein, but can then be transferred to the microwave for cooking. Such packages consist of a thermoplastic laminate having multiple layers of thermoplastic materials.
- In the conventional packaging, foodstuffs contained within the package contact one of the thermoplastic layers. However, when certain products are prepared in these conventional packages, particularly products having high moisture content and/or having sauces or spices included for flavoring, the heated-up products contacting the thermoplastic deform the thermoplastic. This deformation may be manifested as scorch-marks, marring, bubbling, charring or the like. This deformation of the thermoplastic may or may not create a food contamination problem, but at the very least, the visual effect of the bubbled, melted plastic is unappealing to a user. In fact some users assume the product is bad based on the visual deformities and may refuse to eat the product, or worse, refuse to again buy the product.
- Accordingly, there is a need in the art for an improved package designed for microwave cooking. There is a need in the art for a package in which foodstuffs can be frozen and subsequently cooked in a microwave. There also is a need in the art for a microwave cooking package that effectively cooks the foodstuffs contained therein without damaging the foodstuffs or the package.
- The present invention addresses the foregoing needs in the art by providing an improved package for microwave cooking. It is also contemplated that the packaging could be used in other types of cooking, for example, cooking in a conventional oven
- In one aspect of the present invention, a package includes an inner ply and an outer ply laminated to the inner ply. The inner ply contact foodstuffs contained within the package. The inner ply is a paper-based product having a wet tensile strength property such that it will not deteriorate in the presence of high-moisture foods. The paper-based product also has a scorching temperature above the temperature of the foodstuffs when heated. The outer ply includes a polymer film.
- In another aspect, a multi-layer package for use in cooking foodstuffs includes an inner ply, an outer ply, and a vent. The inner ply contacts the foodstuffs and is a paper-based product having a scorching temperature above a maximum temperature reached by the foodstuffs during microwave heating of the foodstuffs. The outer ply is laminated to the inner ply and is a polymer film. The vent is disposed in the pressure to relieve pressure within the package during microwave cooking.
- These and other aspects and objects of the invention will be apparent from the following description and attached figures, in which preferred embodiments of the present invention are described and depicted.
-
FIG. 1A is a representation of a conventional known microwave package. -
FIG. 1B is a sectional view of the area indicated 1B inFIG. 1A . -
FIG. 2A is a perspective view of a microwave cooking package according to a preferred embodiment of the present invention. -
FIG. 2B is a cross-sectional view of the microwave cooking package ofFIG. 2A taken alongsectional line 2B. -
FIG. 3 is a cross-sectional view of a microwave cooking package according to another embodiment of the present invention. -
FIG. 4 is a table showing experimental test results for cooking packages made in accordance with the present invention. - As described above, many commercial packaging products used for storing and subsequently microwaving food products are known. A
conventional package 10 is illustrated inFIGS. 1A and 1B . Generally, aconventional package 10 has a multi-ply construction in which aninner ply 12, i.e., a ply that contacts the product contained within the package, is a thermoplastic. Anouter ply 12 laminated to theinner ply 10 also is conventionally a thermoplastic material on which instructions, branding, and the like can be printed. When certain foods are heated in this conventional package, the inner ply contacting the food often becomes deformed. - An improved microwave-cooking package 20 according to a first embodiment of the invention is illustrated in
FIGS. 2A and 2B . Similar to the conventional packaging, the package 20 has a multi-ply construction. Specifically, aninner ply 22 is disposed for contacting foodstuffs contained within the package and an outer ply 24 is disposed on a side of theinner ply 22 opposite the foodstuffs. Theinner ply 22 and the outer ply 24 preferably are laminated to each other. - The
inner ply 22 preferably is a paper-based layer and the outer ply 24 preferably is a polymer film or a thermoplastic. The paper-based product used to form the inner ply preferably is one of Kraft paper, bleached Kraft paper, parchment paper, greaseproof paper, glassine paper, rice paper, or cellophane. Although not limiting to this disclosure, the inventor has conducted tests with the following commercially available papers: Reynolds parchment 10900-01331, Fox River WOGR, and Wausau Nos. GG 243W00, GN404838, GF323182, GF235174, GN214933, and GF205204. - Preferably, the paper product comprising the
inner ply 22 has a wet tensile strength between about 10% and about 50%. More preferably, the wet tensile strength of the inner ply is between about 20% and about 30%. The inventor has found that when the inner ply is formed of a paper product having a wet tensile strength that is less than about 10%, the package will deteriorate, particularly when higher moisture foods, namely foods having a moisture content of between about 65% and about 85% are contained in the package. Preferably, the package of the invention can be used with foods having moisture contents in this range, and more preferably with foods in the range of about 70% to about 75% moisture content. Paper products having higher wet tensile strength products also can be used, although such paper products tend to be more expensive. - The paper-based product comprising the
inner layer 22 preferably also is characterized in that it has a scorching temperature that is above a maximum temperature the foodstuffs contained within the package will reach during cooking. Accordingly, burning or charring of theinner ply 12 will not occur when the package is heated in the microwave. Preferably, the scorching temperature of the inner layer is above about 290° F. - The package 20 according to the foregoing description is particularly well-suited for use with foodstuffs having high-moisture content resulting from their inclusion of sauces or excess water used for steaming the product. As a result of their high-moisture content, when the products contained within the package 20 are heated, steam is created that inflates the package. The package according to the present invention preferably includes a venting mechanism that allows the steam to be exhausted before the package becomes deformed or, in an extreme case, explodes.
- In one example, venting is partially accomplished by virtue of the characteristics of the inner ply. Specifically, the porosity of the paper product comprising the inner ply is such that the steam generated in the package can escape through the pores in the paper. For example, paper products having a porosity of between about 29 and about 15,000 sec/100 ml are believed to be effective in such an embodiment. Once through the paper-based inner ply, the steam preferably is then vented out an opening formed between the inner ply and the outer ply or through the outer ply.
-
FIGS. 2A and 2B illustrate one preferred embodiment in which the steam vented through the pores in the inner ply is subsequently vented from the package between the inner ply and the outer ply. Specifically, achannel 26 is formed between theinner ply 22 and the outer ply 24. Thechannel 26 preferably is formed by de-laminating a portion between theinner ply 22 and the outer ply 24. In one embodiment, thechannel 26 is formed by omitting the adhesive used to laminate the first and second plies. The channel preferably terminates at anoutlet 28, which is open to the atmosphere. The outlet may be disposed at an edge of the package, or may be in any other position on the package. Thus, in this embodiment, steam exhausts through the pores of theinner ply 10, enters the channel 20 and escapes the package through theopening 22. In another embodiment, the channel 20 could have more than one outlet, for example, on opposite ends of the package. In this embodiment, the channel could extend substantially along either or both of a length and width of the package. - The outlet may be always open to the atmosphere, or it may be selectively opened. For instance, the
outlet 28 may include a seal that is sealed until some event occurs to open or break the seal. The seal may be resealable, or it may be a single-use seal. In one preferred embodiment, the seal is pressure activated such that when sufficient pressure builds up behind the seal, the seal will open and allow excess steam to escape. In this manner, the venting mechanism acts as a bleed valve behind which a relatively large amount of pressure must build up before any of the pressure is bled off. When minimal steam is desired in the package, the seal may open at a relatively low pressure, whereas when it is desirable to maintain an amount of the steam in the package during cooking, for example, to steam the contents of the package, the seal opens at a relatively higher pressure. - The seal comprising the outlet may be formed in a number of ways. For instance, the seal may be formed by including a one-way valve at the outlet which allows steam to exhaust. In another embodiment, an adhesive is used that creates a temporary bond between the inner ply and the outer ply at the outlet. The bond is temporary in that a sufficient force, i.e., resulting from an elevated pressure, in the channel upstream of the bond will overcome the adhering force of the adhesive, thus causing the bond to break. The inner ply and the outer ply thus separate and steam exhausts. The bond preferably is sufficiently strong that the bond is sealed at all times other than cooking, for example, to prevent leaking from the package and/or to prevent contaminants from entering the package.
- In another embodiment, a temporary bond also may be formed to close the channel, but the bond in this embodiment comprises a heat seal that is broken at a predetermined temperature obtained by the package and/or the contents within the package, i.e., a predetermined venting temperature. Specifically, the outlet includes a heat seal that melts or de-adheres when the package and/or the contents of the package reach the venting temperature. The heat seal may consist of a pattern in which the adhesive between the inner and outer plies is arranged. The heat seal could comprise more than just the
outlet 28. In fact, the heat seal could form any or all of thechannel 26. As will be understood, steam will only pass through the heat-sealed portion of the package when a sufficient temperature is reached to open the heat seal. - In the embodiments described above, steam passes through the inner ply of the laminate packaging material through pores inherent in the inner ply. Alternatively, the inner ply may be perforated or otherwise manufactured to include pores, for example, micropores. In another embodiment, a slit or similar opening may be formed through the inner ply in communication with the
channel 26. - In yet another embodiment of the invention, the porosity of the paper is sufficiently low that steam will not permeate the paper. In this embodiment, a different venting mechanism preferably is provided that selectively allows and prohibits passage of steam there through, i.e., to selectively vent steam from or retain steam in the package. An exemplary configuration of this embodiment is illustrated in
FIG. 3 . As depicted therein, aheat seal 36 is provided between opposinginner plies 32 that define the space in which foodstuffs are contained. Outer, polymer plies 34 are laminated to a side of the inner plies opposite the side contacting the foodstuffs. In this embodiment, theheat seal 36 is broken when the temperature within the package reaches a venting temperature. The heat seal in this embodiment is similar to the heat seal described above, except that instead of being formed between the plies comprising the laminate material, i.e., between the inner and outer plies, the heat seal preferably is formed between separate laminate layers. The heat seal illustrated inFIG. 3 is formed at a seam of the package. More particularly, the heat seal comprises some or all of the adhesive used to secure opposite sides of the package to each other or used to close the package after filling. When this preferred package is heated in the microwave, the adhesive melts and the pressure within the package separates the previously-sealed opposing inner plies, thus allowing the package to vent. In other embodiments, the heat seal may be formed at some other position on the package. In these other embodiments, an aperture or the like is provided through the inner ply through which steam can be exhausted. - In yet another embodiment of the invention, instead of using a channel through which steam escapes to an outlet, an aperture may be formed directly through all plies comprising the package, and steam is allowed to vent through this aperture. The aperture may be completely open during cooking, for example, a tab could be applied to cover the whole prior to use, which tab is removed by a user prior to cooking. Alternatively, the aperture may uncover during the cooking process. For example, a cover may cover the aperture by virtue of a heat sensitive adhesive that melts during cooking. The melting of the adhesive combined with the pressure within the container forces the aperture to become uncovered, thereby venting the package.
- Any number of adhesives may be used to seal the package, to laminate the layers, and/or to create the destructible heat seal. Specifically, the invention contemplates the use of water-based, solvent-based, hot melt, and solventless adhesives Some commercial adhesives tested by the inventor include H. B.
Fuller WC 3460 ZZ; H. B. Fuller PWF-3007;Royal 20394;Royal 20123; Hycar 26288; Hycar 26315; Dow Primacor 5986, 5990, 59801, and 59901; and Dow Hypod™ DPOD 4501 and 8501. As should be appreciated, any adhesive that could contact the food stuffs contained within the package should preferably be safe for human consumption. - As described above, the preferred package according to the invention is formed by laminating two layers or plies. The lamination preferably is maintained using an adhesive. Solvent-based, solvent-free, and water-based adhesives are known in the art, and may be used to bond the
plies - As noted above, the outer ply preferably is a polymer film. Such films are generally preferred for the outer ply because their appearance, especially when printed on, is preferable. As described above, the polymer film preferably is laminated to the inner, paper ply. The polymer film may be an oriented polyester (OPET) film, such as
DuPont Mylar 813/48 gauge,EB 11/48 gauge, or 822/48 gauge. Alternatively, the polymer film may be an oriented polypropylene (OPP) film such as AET films AQS/70 gauge. Of course, one of the ordinary skill may appreciate that other polymer films could be used, including other OPET and OPP films, and films other than OPET and OPP. - The invention is not limited to packages having two plies. It is anticipated that additional plies also may be used. Moreover, one or more plies used in the preferred microwave package may be coated, for example, to aid in lamination and/or to provide a barrier layer. When adhesives are used either during formation of the package, such a barrier layer may be required to ensure that the adhesives cannot contact the foodstuffs, for example, because the adhesives are not FDA-approved.
- Although the invention is described as having an inner, paper ply and an outer polymer ply, both plies could be made of paper. By eliminating the polymer ply, the package may be more environmentally-friendly. Using biodegradable adhesive also may be desirable. The package also may include only a single ply. For example, the single ply would be the inner, paper ply. In this arrangement, the inner ply preferably would be at least partially coated with an adhesive that would facilitate formation of the single ply into a package or a pouch. The adhesive preferably would be heat-sensitive and would melt at a predetermined temperature to vent the container, or alternative venting mechanisms, such as those described above, could be used.
-
FIG. 4 illustrates a number of clinical trials for various paper/adhesive/polymer combinations. - The foregoing embodiments of the invention are representative embodiments, and are provided for illustrative purposes. The embodiments are not intended to limit the scope of the invention. Variations and modifications are apparent from a reading of the preceding description and are included within the scope of the invention. The invention is intended to be limited only by the scope of the accompanying claims.
Claims (22)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/101,331 US20090257687A1 (en) | 2008-04-11 | 2008-04-11 | Package fof cooking foodstuffs having high-moisture content |
PCT/US2008/083916 WO2009126185A1 (en) | 2008-04-11 | 2008-11-18 | Package for cooking foodstuffs having high-moisture content |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/101,331 US20090257687A1 (en) | 2008-04-11 | 2008-04-11 | Package fof cooking foodstuffs having high-moisture content |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090257687A1 true US20090257687A1 (en) | 2009-10-15 |
Family
ID=41162149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/101,331 Abandoned US20090257687A1 (en) | 2008-04-11 | 2008-04-11 | Package fof cooking foodstuffs having high-moisture content |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090257687A1 (en) |
WO (1) | WO2009126185A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100150479A1 (en) * | 2008-12-15 | 2010-06-17 | Exopack, Llc | Multi-layered bags and methods of manufacturing the same |
US20110248036A1 (en) * | 2008-09-02 | 2011-10-13 | Steamfast Europe Limited | Improved food packaging sheet for use in microwave ovens |
US20130084374A1 (en) * | 2011-09-30 | 2013-04-04 | Papier-Mettler, Inhaber Michael Mettler E.K. | Bag, particularly re-baking bag, made of glassine paper or cellulose paper with a fluorine coating |
US20150078686A1 (en) * | 2013-09-17 | 2015-03-19 | Packs Co., Ltd. | Packaging container and method for manufacturing the same |
US20170190159A1 (en) * | 2015-12-31 | 2017-07-06 | Graphic Packaging International, Inc. | Packaging Material |
WO2019215371A1 (en) * | 2018-05-10 | 2019-11-14 | Terron Garcia Pedro | Time-controlled valve with notification |
JP2022031081A (en) * | 2020-08-05 | 2022-02-18 | 王子ホールディングス株式会社 | Gas barrier laminate |
Citations (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973045A (en) * | 1973-05-14 | 1976-08-03 | The Pillsbury Company | Popcorn package for microwave popping |
US3989853A (en) * | 1973-09-17 | 1976-11-02 | Forkner John H | Method for expanding confections in a package |
US4038425A (en) * | 1974-09-25 | 1977-07-26 | The Pillsbury Company | Combined popping and shipping package for popcorn |
US4132811A (en) * | 1974-05-30 | 1979-01-02 | The Pillsbury Company | Food package for assuring uniform distribution of microwave energy and process for heating food |
US4219573A (en) * | 1979-02-26 | 1980-08-26 | The Pillsbury Company | Microwave popcorn package |
US4292332A (en) * | 1976-05-10 | 1981-09-29 | Mcham David E | Container for prepackaging, popping and serving popcorn |
US4390555A (en) * | 1975-04-28 | 1983-06-28 | Levinson Melvin L | Microwave oven cooking method |
US4450180A (en) * | 1980-07-07 | 1984-05-22 | Golden Valley Foods Inc. | Package for increasing the volumetric yield of microwave cooked popcorn |
US4571337A (en) * | 1984-05-10 | 1986-02-18 | Hunt-Wesson Foods, Inc. | Container and popcorn ingredient for microwave use |
US4596713A (en) * | 1983-04-14 | 1986-06-24 | Burdette Darrell C | Microwave food packets capable of dispersing a food additive during heating |
US4640838A (en) * | 1984-09-06 | 1987-02-03 | Minnesota Mining And Manufacturing Company | Self-venting vapor-tight microwave oven package |
US4705707A (en) * | 1985-12-17 | 1987-11-10 | Presto Products, Incorporated | Polyethylene/polyester nonoriented heat sealable moisture barrier film and bag |
US4716061A (en) * | 1985-12-17 | 1987-12-29 | Presto Products, Incorporated | Polypropylene/polyester nonoriented heat sealable moisture barrier film and bag |
US4803088A (en) * | 1985-05-01 | 1989-02-07 | House Food Industrial Company Limited | Container packed with instant food for use in microwave oven |
US4806371A (en) * | 1986-11-10 | 1989-02-21 | Packageing Concepts, Inc. | Microwavable package for packaging combination of products and ingredients |
US4810844A (en) * | 1987-11-30 | 1989-03-07 | Anderson Alan R | Microwave popcorn package |
US4866786A (en) * | 1988-04-18 | 1989-09-12 | Sentinel Bag & Paper Company, Inc. | Ovenable bag |
US4865854A (en) * | 1985-09-26 | 1989-09-12 | Minnesota Mining And Manufacturing Company | Microwave food package |
US4873101A (en) * | 1985-09-26 | 1989-10-10 | Minnesota Mining And Manufacturing Company | Microwave food package and grease absorbent pad therefor |
US4874620A (en) * | 1986-10-01 | 1989-10-17 | Packaging Concepts, Inc. | Microwavable package incorporating controlled venting |
US4890439A (en) * | 1988-11-09 | 1990-01-02 | James River Corporation | Flexible disposable material for forming a food container for microwave cooking |
US4892744A (en) * | 1987-02-11 | 1990-01-09 | Borden, Inc. | Single-pleated microwave popcorn package |
US4902520A (en) * | 1988-10-11 | 1990-02-20 | Dysarz Edward D | Device and method to pop corn |
US4911960A (en) * | 1988-01-19 | 1990-03-27 | National Starch And Chemical Corporation | Laminating adhesive for film/paper microwavable products |
US4916280A (en) * | 1987-07-11 | 1990-04-10 | Nestec S.A. | Food package adapted particularly for microwave heating |
US4927648A (en) * | 1989-01-23 | 1990-05-22 | Borden, Inc. | Method of preparing popcorn |
US4942050A (en) * | 1989-01-23 | 1990-07-17 | Ylvisaker Jon A | Process for forming a microwave popcorn package |
US4950859A (en) * | 1989-03-27 | 1990-08-21 | Anderson Alan R | Bag for containing edibles during microwave cooking |
US4961994A (en) * | 1987-12-16 | 1990-10-09 | General Electric Company | Protective coated composite material |
US4992636A (en) * | 1987-10-05 | 1991-02-12 | Toyo Seikan Kaisha Ltd. | Sealed container for microwave oven cooking |
US5489766A (en) * | 1994-10-24 | 1996-02-06 | Advanced Deposition Technologies, Inc. | Food bag for microwave cooking with fused susceptor |
US5498080A (en) * | 1994-04-16 | 1996-03-12 | General Mills, Inc. | Easily expandable, flexible paper popcorn package |
US5655842A (en) * | 1993-12-28 | 1997-08-12 | Packs Co., Ltd. | Wrapping device |
US5679278A (en) * | 1994-12-20 | 1997-10-21 | Cox; David H. | Microwaveable container for liquid oils |
US5690853A (en) * | 1995-09-27 | 1997-11-25 | Golden Valley Microwave Foods, Inc. | Treatments for microwave popcorn packaging and products |
US5753895A (en) * | 1996-01-16 | 1998-05-19 | Golden Valley Microwave Foods, Inc. | Microwave popcorn package with adhesive pattern |
US5770839A (en) * | 1996-06-20 | 1998-06-23 | Union Camp Corporation | Microwaveable bag for cooking and serving food |
US5773801A (en) * | 1995-02-15 | 1998-06-30 | Golden Valley Microwave Foods, Inc. | Microwave cooking construction for popping corn |
US5780824A (en) * | 1997-02-07 | 1998-07-14 | Lulirama International, Inc. | Expandable and self-venting novelty container for cooking microwavable popcorn |
US5786010A (en) * | 1994-07-22 | 1998-07-28 | American Packaging Corporation | Bag and method of making the same |
US5814382A (en) * | 1994-07-22 | 1998-09-29 | American Packaging Corporation | Bag and method of making the same |
US5834046A (en) * | 1995-05-15 | 1998-11-10 | Golden Valley Microwave Foods, Inc. | Construction including internal closure for use in microwave cooking |
US5871790A (en) * | 1997-03-04 | 1999-02-16 | Union Camp Corporation | Laminated bag wall construction |
US5919390A (en) * | 1997-11-26 | 1999-07-06 | Childress; Rickey T. | Method and package for microwave roasting of unshelled peanuts/nuts/seeds |
US5945022A (en) * | 1997-09-12 | 1999-08-31 | Nabisco Technology Company | Continuous microwave assisted baking process |
US5952025A (en) * | 1994-07-22 | 1999-09-14 | American Packaging Corporation | Bag and method of making the same |
US5958482A (en) * | 1997-10-20 | 1999-09-28 | General Mills, Inc. | Easily expandable nontrapping flexible paper microwavable popcorn package |
US5993869A (en) * | 1995-08-18 | 1999-11-30 | Conagra, Inc. | Packaged microwave popcorn formulation |
US6231903B1 (en) * | 1999-02-11 | 2001-05-15 | General Mills, Inc. | Food package for microwave heating |
US20040161501A1 (en) * | 2003-02-19 | 2004-08-19 | Popov Vladi Krumov | Methods of preparation of microwave pop-corn with low melt point oil packed in bags with high greaseproofness |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004100737A2 (en) * | 2003-05-12 | 2004-11-25 | Steamway Franchise Sales, Inc. | Microwave cooking container with venting patch |
-
2008
- 2008-04-11 US US12/101,331 patent/US20090257687A1/en not_active Abandoned
- 2008-11-18 WO PCT/US2008/083916 patent/WO2009126185A1/en active Application Filing
Patent Citations (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973045A (en) * | 1973-05-14 | 1976-08-03 | The Pillsbury Company | Popcorn package for microwave popping |
US3989853A (en) * | 1973-09-17 | 1976-11-02 | Forkner John H | Method for expanding confections in a package |
US4132811A (en) * | 1974-05-30 | 1979-01-02 | The Pillsbury Company | Food package for assuring uniform distribution of microwave energy and process for heating food |
US4038425A (en) * | 1974-09-25 | 1977-07-26 | The Pillsbury Company | Combined popping and shipping package for popcorn |
US4390555A (en) * | 1975-04-28 | 1983-06-28 | Levinson Melvin L | Microwave oven cooking method |
US4292332A (en) * | 1976-05-10 | 1981-09-29 | Mcham David E | Container for prepackaging, popping and serving popcorn |
US4219573A (en) * | 1979-02-26 | 1980-08-26 | The Pillsbury Company | Microwave popcorn package |
US4450180A (en) * | 1980-07-07 | 1984-05-22 | Golden Valley Foods Inc. | Package for increasing the volumetric yield of microwave cooked popcorn |
US4548826A (en) * | 1980-07-07 | 1985-10-22 | Golden Valley Foods Inc. | Method for increasing the volumetric yield of microwave cooked popcorn |
US4596713A (en) * | 1983-04-14 | 1986-06-24 | Burdette Darrell C | Microwave food packets capable of dispersing a food additive during heating |
US4571337A (en) * | 1984-05-10 | 1986-02-18 | Hunt-Wesson Foods, Inc. | Container and popcorn ingredient for microwave use |
US4640838A (en) * | 1984-09-06 | 1987-02-03 | Minnesota Mining And Manufacturing Company | Self-venting vapor-tight microwave oven package |
US4803088A (en) * | 1985-05-01 | 1989-02-07 | House Food Industrial Company Limited | Container packed with instant food for use in microwave oven |
US4873101A (en) * | 1985-09-26 | 1989-10-10 | Minnesota Mining And Manufacturing Company | Microwave food package and grease absorbent pad therefor |
US4865854A (en) * | 1985-09-26 | 1989-09-12 | Minnesota Mining And Manufacturing Company | Microwave food package |
US4705707A (en) * | 1985-12-17 | 1987-11-10 | Presto Products, Incorporated | Polyethylene/polyester nonoriented heat sealable moisture barrier film and bag |
US4716061A (en) * | 1985-12-17 | 1987-12-29 | Presto Products, Incorporated | Polypropylene/polyester nonoriented heat sealable moisture barrier film and bag |
US4874620A (en) * | 1986-10-01 | 1989-10-17 | Packaging Concepts, Inc. | Microwavable package incorporating controlled venting |
US4806371A (en) * | 1986-11-10 | 1989-02-21 | Packageing Concepts, Inc. | Microwavable package for packaging combination of products and ingredients |
US4892744A (en) * | 1987-02-11 | 1990-01-09 | Borden, Inc. | Single-pleated microwave popcorn package |
US4916280A (en) * | 1987-07-11 | 1990-04-10 | Nestec S.A. | Food package adapted particularly for microwave heating |
US4992636A (en) * | 1987-10-05 | 1991-02-12 | Toyo Seikan Kaisha Ltd. | Sealed container for microwave oven cooking |
US4810844A (en) * | 1987-11-30 | 1989-03-07 | Anderson Alan R | Microwave popcorn package |
US4961994A (en) * | 1987-12-16 | 1990-10-09 | General Electric Company | Protective coated composite material |
US4911960A (en) * | 1988-01-19 | 1990-03-27 | National Starch And Chemical Corporation | Laminating adhesive for film/paper microwavable products |
US4866786A (en) * | 1988-04-18 | 1989-09-12 | Sentinel Bag & Paper Company, Inc. | Ovenable bag |
US4902520A (en) * | 1988-10-11 | 1990-02-20 | Dysarz Edward D | Device and method to pop corn |
US4890439A (en) * | 1988-11-09 | 1990-01-02 | James River Corporation | Flexible disposable material for forming a food container for microwave cooking |
US4927648A (en) * | 1989-01-23 | 1990-05-22 | Borden, Inc. | Method of preparing popcorn |
US4942050A (en) * | 1989-01-23 | 1990-07-17 | Ylvisaker Jon A | Process for forming a microwave popcorn package |
US4950859A (en) * | 1989-03-27 | 1990-08-21 | Anderson Alan R | Bag for containing edibles during microwave cooking |
US5655842A (en) * | 1993-12-28 | 1997-08-12 | Packs Co., Ltd. | Wrapping device |
US5839832A (en) * | 1993-12-28 | 1998-11-24 | Packs Co. Ltd. | Wrapping device |
US5498080A (en) * | 1994-04-16 | 1996-03-12 | General Mills, Inc. | Easily expandable, flexible paper popcorn package |
US5952025A (en) * | 1994-07-22 | 1999-09-14 | American Packaging Corporation | Bag and method of making the same |
US5786010A (en) * | 1994-07-22 | 1998-07-28 | American Packaging Corporation | Bag and method of making the same |
US5814382A (en) * | 1994-07-22 | 1998-09-29 | American Packaging Corporation | Bag and method of making the same |
US5489766A (en) * | 1994-10-24 | 1996-02-06 | Advanced Deposition Technologies, Inc. | Food bag for microwave cooking with fused susceptor |
US5679278A (en) * | 1994-12-20 | 1997-10-21 | Cox; David H. | Microwaveable container for liquid oils |
US5773801A (en) * | 1995-02-15 | 1998-06-30 | Golden Valley Microwave Foods, Inc. | Microwave cooking construction for popping corn |
US5834046A (en) * | 1995-05-15 | 1998-11-10 | Golden Valley Microwave Foods, Inc. | Construction including internal closure for use in microwave cooking |
US5993869A (en) * | 1995-08-18 | 1999-11-30 | Conagra, Inc. | Packaged microwave popcorn formulation |
US5690853A (en) * | 1995-09-27 | 1997-11-25 | Golden Valley Microwave Foods, Inc. | Treatments for microwave popcorn packaging and products |
US5994685A (en) * | 1995-09-27 | 1999-11-30 | Golden Valley Microwave Foods, Inc. | Treatments for microwave popcorn packaging and products |
US5928554A (en) * | 1996-01-16 | 1999-07-27 | Conagra, Inc. | Microwave popcorn package with adhesive pattern |
US5753895A (en) * | 1996-01-16 | 1998-05-19 | Golden Valley Microwave Foods, Inc. | Microwave popcorn package with adhesive pattern |
US5770839A (en) * | 1996-06-20 | 1998-06-23 | Union Camp Corporation | Microwaveable bag for cooking and serving food |
US5780824A (en) * | 1997-02-07 | 1998-07-14 | Lulirama International, Inc. | Expandable and self-venting novelty container for cooking microwavable popcorn |
US5871790A (en) * | 1997-03-04 | 1999-02-16 | Union Camp Corporation | Laminated bag wall construction |
US5945022A (en) * | 1997-09-12 | 1999-08-31 | Nabisco Technology Company | Continuous microwave assisted baking process |
US5958482A (en) * | 1997-10-20 | 1999-09-28 | General Mills, Inc. | Easily expandable nontrapping flexible paper microwavable popcorn package |
US5919390A (en) * | 1997-11-26 | 1999-07-06 | Childress; Rickey T. | Method and package for microwave roasting of unshelled peanuts/nuts/seeds |
US6231903B1 (en) * | 1999-02-11 | 2001-05-15 | General Mills, Inc. | Food package for microwave heating |
US20040161501A1 (en) * | 2003-02-19 | 2004-08-19 | Popov Vladi Krumov | Methods of preparation of microwave pop-corn with low melt point oil packed in bags with high greaseproofness |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110248036A1 (en) * | 2008-09-02 | 2011-10-13 | Steamfast Europe Limited | Improved food packaging sheet for use in microwave ovens |
US8931955B2 (en) * | 2008-09-02 | 2015-01-13 | Excelsior Technologies Limited | Food packaging sheet for use in microwave ovens |
US20100150479A1 (en) * | 2008-12-15 | 2010-06-17 | Exopack, Llc | Multi-layered bags and methods of manufacturing the same |
US9056697B2 (en) * | 2008-12-15 | 2015-06-16 | Exopack, Llc | Multi-layered bags and methods of manufacturing the same |
US20130084374A1 (en) * | 2011-09-30 | 2013-04-04 | Papier-Mettler, Inhaber Michael Mettler E.K. | Bag, particularly re-baking bag, made of glassine paper or cellulose paper with a fluorine coating |
US20150078686A1 (en) * | 2013-09-17 | 2015-03-19 | Packs Co., Ltd. | Packaging container and method for manufacturing the same |
US9371159B2 (en) * | 2013-09-17 | 2016-06-21 | Packs Co., Ltd. | Packaging container and method for manufacturing the same |
US20170190159A1 (en) * | 2015-12-31 | 2017-07-06 | Graphic Packaging International, Inc. | Packaging Material |
WO2019215371A1 (en) * | 2018-05-10 | 2019-11-14 | Terron Garcia Pedro | Time-controlled valve with notification |
US20210307561A1 (en) * | 2018-05-10 | 2021-10-07 | Pedro TERRÓN GARCÍA | Time-controlled valve with warning system |
EP3792196A4 (en) * | 2018-05-10 | 2022-04-06 | Terrón García, Pedro | Time-controlled valve with notification |
JP2022031081A (en) * | 2020-08-05 | 2022-02-18 | 王子ホールディングス株式会社 | Gas barrier laminate |
Also Published As
Publication number | Publication date |
---|---|
WO2009126185A1 (en) | 2009-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090257687A1 (en) | Package fof cooking foodstuffs having high-moisture content | |
US7045190B2 (en) | Packaging material and packaged product | |
US7381453B2 (en) | Packaging film | |
US8931955B2 (en) | Food packaging sheet for use in microwave ovens | |
EP1245504A1 (en) | Bag with two compartments for steaming food products | |
US6582123B1 (en) | Package incorporating a pressure venting feature | |
NO882443L (en) | PACKAGING PACKAGING AND PROCEDURE FOR PREPARING SUCH A PACKAGING. | |
EP2586726A2 (en) | System and apparatus for a flexible moisture absorbent microwave package | |
US20070257030A1 (en) | Microwaveable package | |
JP4595402B2 (en) | Bag-like container | |
JP5478823B2 (en) | Packaging material | |
JP7439507B2 (en) | packaging | |
JP3006528B2 (en) | Automatic ventilation packaging bag | |
JP6863417B2 (en) | Skin pack packaging | |
JP7439506B2 (en) | Base material and packaging body | |
JP2005059867A (en) | Packaging bag having function of steam venting and package using the same | |
CN113453997A (en) | Plastic film and package using the same | |
CN214325854U (en) | Microwave heating automatic deflation packaging bag | |
JP4904967B2 (en) | Outer packaging box for steam release packaging bag | |
KR100989502B1 (en) | A package | |
JP2000238860A (en) | Packaging container for cooked food | |
JPH0232976A (en) | Packaging material, and container and packaging bag using said packaging material | |
AU2016201765B2 (en) | Package bag for microwave cooking | |
JP6500416B2 (en) | Package | |
CA2689761C (en) | Microwaveable pouch capable of controlled respiration for extended shelf life of produce contained therein |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BIRDS EYE FOODS, INC., NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MITCHELL, ROBERT WENZEL;REEL/FRAME:020848/0185 Effective date: 20080410 |
|
AS | Assignment |
Owner name: BIRDS EYE GROUP, INC., NEW YORK Free format text: CHANGE OF NAME;ASSIGNOR:BIRDS EYE FOODS, INC.;REEL/FRAME:026161/0577 Effective date: 20091005 Owner name: BIRDS EYE FOODS, LLC, NEW YORK Free format text: CHANGE OF NAME;ASSIGNOR:BIRDS EYE GROUP, INC.;REEL/FRAME:026161/0939 Effective date: 20091224 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |