US3595467A - Flexible sealed container provided with a one-way safety valve - Google Patents

Flexible sealed container provided with a one-way safety valve Download PDF

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US3595467A
US3595467A US791304*A US3595467DA US3595467A US 3595467 A US3595467 A US 3595467A US 3595467D A US3595467D A US 3595467DA US 3595467 A US3595467 A US 3595467A
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container
base member
disc
interior
opening
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US791304*A
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Luigi Goglio
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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
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/1402—Check valves with flexible valve members having an integral flexible member cooperating with a plurality of seating surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement

Definitions

  • ABSTRACT A container of flexible sheet material capable of being sealed and provided with a one-way valve.
  • the sheet material of the container has a portion formed with an opening passing therethrough.
  • the one-way valve has at this opening of the sheet material a base member formed with a valve opening which registers with the sheet material opening, this base member being fixed in a fluidtight manner to the sheet material of the container.
  • the valve opening is covered by a flexible resilient element of the one-way valve, in the form ofa disc having a periphery situated beyond the valve opening and engaging that surface of the base member which is directed away from the interior of the container.
  • a hollow member Fixed to this latter surface of the base member is a hollow member defining with the base member a chamber in which the disc is located, and this hollow member has an interior projection holding the disc against the base member with the periphery of the disc extending beyond the projection of the hollow member.
  • This hollow member is itself formed with a discharge opening communicating with the interior space of the chamber at a part thereof which is situated beside the projection in communication with the periphery of the disc.
  • the disc will yield to permit a fluid such as a gas at an undesirably highpressure to escape out of the interior of the container into the chamber of the hollow member and out through the discharge opening thereof to the outer atmosphere.
  • the present invention relates to packing within flexible sealed containers and simultaneously to improvement in preserving products which are generally perishable at air contact with the possibility of degassing in the long run, such as coffee or grated cheese (or the like).
  • the object of the present invention is substantially to achieve the possibility of adopting more economical containers, such as to ensure the same degree in product preservation as with rigid containers at present being used in many instances and further to ensure an excellent preservation of the packed products in the long run.
  • coffee encloses within its alveoli a substantial amount of gas built up during roasting.
  • This gas is CO which slowly escapes from the coffee beans within some period oftime (from 2 to days) depending on the type of coffee and roasting degree.
  • the sealed container be rigid, such as tin or glass containers, it is sufficient to make such containers sturdy enough so that they will not yield under the double-stress condition, namely firstly a vacuum stress and secondly a pressure stress.
  • Nonsealed containers cannot be used for the above purposes since, as such, they would enable coffee to contact the external oxygen and hence could not allow coffee to be preserved.
  • a container comprising a plurality of flexible sheet materials, at least one of which is a thermoplastic material, the container being such as to have a particular resistance to both external pressure and inside generating gas pressure, the container being also provided with a oneway safety valve for allowing the outlet of the inside generating gas when the pressure of said gas will exceed a predetermined value.
  • FIG. I is a perspective view of the container
  • FIG. 2 is a cross section of said container as taken along line 2-2 of FIG. I;
  • FIG. 3 is a sectional view showing a valve as applied to the container.
  • the flexible sealed container according to the present invention essentially conceived for resisting a double-stress condition in subsequent steps, namely an outside-to-inside pressure condition and an inside-to-outside pressure condition, can be made by materials which are generally formed of a plurality of film laminates, the inner of which is of thermosealing material.
  • the container is made in the form of a bellows, as shown in FIGS. 1 and 2, wherein the seams are completely thermosealed.
  • the inner surface of the container, as made of thermoplastic sheet, is designated at 1, whereas at 2 there is designated the outer surface of said container which is made of another material, such as paper.
  • the longitudinal weld line (FIG. 2) is designated at 3. Welding is accomplished on borders initially laterally projecting, whereupon the weld zone, suitably bent as shown in FIG. 2, is attached to the outer underlying surface 2, namely being adhered by a suitable adhesive shown at 4.
  • the container is also provided with a one-way valve means for preventing the external air from entering said container.
  • the container which is formed by the flexible sheet material 1, 2, is capable of being sealed, and the flexible sheet material is formed with an opening, shown in FIG. 3, where the one-way valve means is situated.
  • This oneway valve means includes the base member 5 which is fluid tightly fixed with the flexible sheet material and which is formed with the valve opening 6 which registers with the opening in the sheet material.
  • the rubber disc 7 forms a yieldable means which normally assumes the position illustrated in FIG. 3 engaging the surface of base member 5 which is directed away from the interior of the container and closing the opening 6 with a peripheral region of the disc 7 extending beyond the opening 6.
  • the one-way valve means further includes the hollow member 8 which is fixed with the base member 5 and which defines therewith an inner chamber which accommodates the yieldable means 7.
  • This hollow member 8 has the interior projection 9 engaging the yieldable means 7 for holding the latter against the base member 5 extending across the valve opening 6.
  • the hollow space within the hollow member 8 communicates with a discharge opening 10 formed in the member 8 and communicating with the outer atmosphere, so that in response to an excess of interior pressure over exterior pressure, the yieldable means 7 will provide communication between the valve opening 6 and the hollow interior chamber of the hollow member 8, so that excess pressure will result in. sufficient communication between the interior of the container and the outer atmosphere to relieve the excess pressure.
  • thermoweldable portion 1 of the container is welded on the thermoweldable portion 1 of the container, the borders 11 of which are shown in FIG. 3.
  • the system substantially operated as follows:
  • the container provided with the valve is filled, for example, with coffee and following evacuation is then sealed.
  • rubber disc 7 is biased by an external pressure (that is, a pressure directed from outside to inside of the container) and then presses against base member 5 about opening 6; thus, some vacuum degree is observed within the container and hence at the surface of disc 7 adjacent opening 6 there is a veryslight pressure and, however, considerably less than the external pressure which via discharge opening 10 is exerted on the opposite surface of said disc.
  • an external pressure that is, a pressure directed from outside to inside of the container
  • the rubber disc 7 as pressed on base member 5 will prevent air from entering the container, or the passage of air
  • the pressure so acting against disc 7 is resisted by resilient rubber reaction and projection 9 of hollow member 8 pressing on said disc.
  • the peripheral portion of the disc will automatically lift allowing the outlet of the gas which so reaches the external space S through the small discharge opening 10; the gas outlet automatically causes a pressure reduction within the bag or bellows, and therefore disc 7 recloses the passage and prevents air from entering from the outside.
  • Said pressure limit causing the gas outlet can be adjusted by varying the following factors:
  • a container comprising a flexible sheet material capable of being sealed for closing off the interior of the container from the outer atmosphere, and a one-way valve means carried by said flexible sheet material for preventing outside air from flowing into the container, said one-way valve means including a base member carried by said sheet material, having a surface directed away from the interior of said container, and formed with a valve opening, yieldable means engaging said surface of said base member, extending across said valve opening, and normally assuming a position engaging the latter surface for maintaining said one-way valve means closed, said valve means further including a hollow member fixed to said surface of said base member and defining therewith an inner chamber in which said yieldable means is located, said hollow member being formed with a discharge opening through which said chamber communicates with the outer atmosphere, and said yieldable means responding to an excess of pressure in the interior of said container over the outer atmospheric pressure by yielding to place said valve opening in communication with'said chamber until said excess pressure in theinterior of said container diminishes to a value where said yieldable means again assumes said position closing said valve
  • thermoplastic sheet portion defines part of the interior of said container, and has an inner surface directed toward the interior of said container, said base member being welded to said thermoplastic sheet portion at said surface thereof in the interior of said container.
  • said yieldable means is in the form of a flexible disc, said hollow member having an inner projection holding said disc against said inner surface of said base member, and said disc having a peripheral portion extending beyond said projection to be deflected by the excess pressure in the interior of said container when said yieldable means responds to place said valve opening in communication with said chamber.
  • valve opening is situated centrally of said base member and said projection and disc are both coaxially aligned with said valve opening.

Abstract

A container of flexible sheet material capable of being sealed and provided with a one-way valve. The sheet material of the container has a portion formed with an opening passing therethrough. The one-way valve has at this opening of the sheet material a base member formed with a valve opening which registers with the sheet material opening, this base member being fixed in a fluidtight manner to the sheet material of the container. The valve opening is covered by a flexible resilient element of the one-way valve, in the form of a disc having a periphery situated beyond the valve opening and engaging that surface of the base member which is directed away from the interior of the container. Fixed to this latter surface of the base member is a hollow member defining with the base member a chamber in which the disc is located, and this hollow member has an interior projection holding the disc against the base member with the periphery of the disc extending beyond the projection of the hollow member. This hollow member is itself formed with a discharge opening communicating with the interior space of the chamber at a part thereof which is situated beside the projection in communication with the periphery of the disc. Thus, as long as the atmospheric pressure is greater than the interior pressure of the container the disc will be held against the base member closing the valve opening. However, when the interior pressure in the container exceeds atmospheric pressure the disc will yield to permit a fluid such as a gas at an undesirably high pressure to escape out of the interior of the container into the chamber of the hollow member and out through the discharge opening thereof to the outer atmosphere.

Description

United States Patent [72] Inventor LuigiGoglio Via Solari 10, Milan, Italy 121] AppLNo. 791,304 [22] Filed Jan.l5,l969 [45] Patented July27,l97l [32] Priority Jan.23, 1968 [3 1 a y {31] Il893A/68 {54] FLEXIBLE SEALED CONTAINER PROVIDED WITH A ONE-WAY SAFETY VALVE 9 Claims, 3 Drawing Figs.
[52] U.S.Cl 229/62.5, 137/525, 137/5253, 220/44 R, 222/396, 222/494 [51] lnt.Cl ..B65d3l/l4 [50] FieldoiSearch 150/9; 137/525, 525.3; 220/44; 222/396, 494; 229/62.5, 53,DIG. l4;2l5/56 [56] References Cited UNITED STATES PATENTS 2,724,543 11/1955 Baver 229/625 2,822,961 2/1958 Seaquist 222/396X 3,081,919 3/1963 Samuel 222/396 3,197,119 7/1965 Hartigetal 229/62.5 3,302,859 2/1967 Perry 229/62.5X 3,371,849 3/1968 Rochla 229/62.5 3,374,805 3/1968 Trevarrow,.1r... 220/44X 3,430,842 3/1969 Yamaguchi 229/62.5 3,432,087 3/1969 Costello 229/62.5 2,138,376 11/1938 Griswold... 215/56 2,738,091 3/1956 Maddox 215/56 I /All 3,191,807 6/1965 Rodrigues,.lr
ABSTRACT: A container of flexible sheet material capable of being sealed and provided with a one-way valve. The sheet material of the container has a portion formed with an opening passing therethrough. The one-way valve has at this opening of the sheet material a base member formed with a valve opening which registers with the sheet material opening, this base member being fixed in a fluidtight manner to the sheet material of the container. The valve opening is covered by a flexible resilient element of the one-way valve, in the form ofa disc having a periphery situated beyond the valve opening and engaging that surface of the base member which is directed away from the interior of the container. Fixed to this latter surface of the base member is a hollow member defining with the base member a chamber in which the disc is located, and this hollow member has an interior projection holding the disc against the base member with the periphery of the disc extending beyond the projection of the hollow member. This hollow member is itself formed with a discharge opening communicating with the interior space of the chamber at a part thereof which is situated beside the projection in communication with the periphery of the disc. Thus, as long as the atmospheric pressure is greater than the interior pressure of the container the disc will be held against the base member closing the valve opening. However, when the interior pressure in the container exceeds atmospheric pressure the disc will yield to permit a fluid such as a gas at an undesirably highpressure to escape out of the interior of the container into the chamber of the hollow member and out through the discharge opening thereof to the outer atmosphere.
FLEXIBLE SEALED CONTAINER PROVIDED WITH A ONE-WAY SAFETY VALVE.
The present invention relates to packing within flexible sealed containers and simultaneously to improvement in preserving products which are generally perishable at air contact with the possibility of degassing in the long run, such as coffee or grated cheese (or the like).
The object of the present invention is substantially to achieve the possibility of adopting more economical containers, such as to ensure the same degree in product preservation as with rigid containers at present being used in many instances and further to ensure an excellent preservation of the packed products in the long run.
Thus, it is known, for example, that coffee to be preserved under the best conditions should beisolated from the external environment and have a minimized contact with air and oxygen, particularly to avoid oxidation and resulting going rancid of the essential oils, the latter forming, as a matter of fact, the elements providing flavor and taste.
This is achieved by vacuum packing the coffee.
However, coffee encloses within its alveoli a substantial amount of gas built up during roasting.
This gas is CO which slowly escapes from the coffee beans within some period oftime (from 2 to days) depending on the type of coffee and roasting degree.
Normally these gases are not removed during the vacuum stage which is accomplished during coffee packing, the opera tion requiring an excessive time (4 or 5 hours) whereby, following the packing and after some time, a pressure is brought about within the container due to gas emission, as previously stated.
Should the sealed container be rigid, such as tin or glass containers, it is sufficient to make such containers sturdy enough so that they will not yield under the double-stress condition, namely firstly a vacuum stress and secondly a pressure stress.
Nonsealed containers cannot be used for the above purposes since, as such, they would enable coffee to contact the external oxygen and hence could not allow coffee to be preserved.
In the case of flexible sealed containers, along with the problem of the double stress such containers are subjected to, there is also the problem of deformability whereby, while during vacuum stage the containers adhere to the product according to a predetermined shape, during gas generation stage said containers swell and deform.
In order to overcome such drawbacks, there is provided according to the present invention a container comprising a plurality of flexible sheet materials, at least one of which is a thermoplastic material, the container being such as to have a particular resistance to both external pressure and inside generating gas pressure, the container being also provided with a oneway safety valve for allowing the outlet of the inside generating gas when the pressure of said gas will exceed a predetermined value.
These and other significant features of the container ac cording to the present invention will be more apparent from the following description related to the accompanying draw- Y ing, schematically showing by mere way of nonrestrictive example an embodiment of the container according to the invention, and particularly:
FIG. I is a perspective view of the container;
FIG. 2 is a cross section of said container as taken along line 2-2 of FIG. I; and
FIG. 3 is a sectional view showing a valve as applied to the container.
The flexible sealed container according to the present invention, essentially conceived for resisting a double-stress condition in subsequent steps, namely an outside-to-inside pressure condition and an inside-to-outside pressure condition, can be made by materials which are generally formed of a plurality of film laminates, the inner of which is of thermosealing material.
Particularly, in the illustrated example, the container is made in the form of a bellows, as shown in FIGS. 1 and 2, wherein the seams are completely thermosealed.
The inner surface of the container, as made of thermoplastic sheet, is designated at 1, whereas at 2 there is designated the outer surface of said container which is made of another material, such as paper.
The longitudinal weld line (FIG. 2) is designated at 3. Welding is accomplished on borders initially laterally projecting, whereupon the weld zone, suitably bent as shown in FIG. 2, is attached to the outer underlying surface 2, namely being adhered by a suitable adhesive shown at 4.
Thereby, a greater resistance is achieved to the stress condition due to pressure generated within the container.
Thus, it will be appreciated that stresses are tangentially transmitted and involve a substantial surface section. Therefore, the container can better endure the strain it is subjected to.
According to the present invention, the container is also provided with a one-way valve means for preventing the external air from entering said container.
With the present invention the container which is formed by the flexible sheet material 1, 2, is capable of being sealed, and the flexible sheet material is formed with an opening, shown in FIG. 3, where the one-way valve means is situated. This oneway valve means includes the base member 5 which is fluid tightly fixed with the flexible sheet material and which is formed with the valve opening 6 which registers with the opening in the sheet material. The rubber disc 7 forms a yieldable means which normally assumes the position illustrated in FIG. 3 engaging the surface of base member 5 which is directed away from the interior of the container and closing the opening 6 with a peripheral region of the disc 7 extending beyond the opening 6. The one-way valve means further includes the hollow member 8 which is fixed with the base member 5 and which defines therewith an inner chamber which accommodates the yieldable means 7. This hollow member 8 has the interior projection 9 engaging the yieldable means 7 for holding the latter against the base member 5 extending across the valve opening 6. The hollow space within the hollow member 8 communicates with a discharge opening 10 formed in the member 8 and communicating with the outer atmosphere, so that in response to an excess of interior pressure over exterior pressure, the yieldable means 7 will provide communication between the valve opening 6 and the hollow interior chamber of the hollow member 8, so that excess pressure will result in. sufficient communication between the interior of the container and the outer atmosphere to relieve the excess pressure.
The above-described valve is welded on the thermoweldable portion 1 of the container, the borders 11 of which are shown in FIG. 3.
Practically, in order to apply said valve to the container, an opening is drilled in the container so as to slip in the valve, which is then welded to the container.
The system substantially operated as follows:
The container provided with the valve is filled, for example, with coffee and following evacuation is then sealed.
Therefore, rubber disc 7 is biased by an external pressure (that is, a pressure directed from outside to inside of the container) and then presses against base member 5 about opening 6; thus, some vacuum degree is observed within the container and hence at the surface of disc 7 adjacent opening 6 there is a veryslight pressure and, however, considerably less than the external pressure which via discharge opening 10 is exerted on the opposite surface of said disc.
Thus, the rubber disc 7 as pressed on base member 5 will prevent air from entering the container, or the passage of air The pressure so acting against disc 7 is resisted by resilient rubber reaction and projection 9 of hollow member 8 pressing on said disc.
When the force pressing from the inside of the container on said disc exceeds a predetermined limit, the peripheral portion of the disc will automatically lift allowing the outlet of the gas which so reaches the external space S through the small discharge opening 10; the gas outlet automatically causes a pressure reduction within the bag or bellows, and therefore disc 7 recloses the passage and prevents air from entering from the outside.
Thus, coffee remains within its environment out of air contact and is so preserved under the best conditions.
Said pressure limit causing the gas outlet can be adjusted by varying the following factors:
1. The thickness of rubber disc 7 (whereby the resilient reaction thereof will vary).
2. The initial pressure provided by projection 9 of hollow member 8.
3. The diameter of said projection.
4. The diameter of opening 6.
What I claim is:
l. A container comprising a flexible sheet material capable of being sealed for closing off the interior of the container from the outer atmosphere, and a one-way valve means carried by said flexible sheet material for preventing outside air from flowing into the container, said one-way valve means including a base member carried by said sheet material, having a surface directed away from the interior of said container, and formed with a valve opening, yieldable means engaging said surface of said base member, extending across said valve opening, and normally assuming a position engaging the latter surface for maintaining said one-way valve means closed, said valve means further including a hollow member fixed to said surface of said base member and defining therewith an inner chamber in which said yieldable means is located, said hollow member being formed with a discharge opening through which said chamber communicates with the outer atmosphere, and said yieldable means responding to an excess of pressure in the interior of said container over the outer atmospheric pressure by yielding to place said valve opening in communication with'said chamber until said excess pressure in theinterior of said container diminishes to a value where said yieldable means again assumes said position closing said valve opening.
2. The combination of claim 1 and wherein said hollow member of said valve means has an inner projection holding said yieldable means against said surface of said base member.
3. The combination of claim 1 and wherein said sheet material is formed with an opening with which said valve opening registers.
4. The combination of claim 3 and wherein said sheet material includes a thermoplastic sheet portion and said base member being made of a plastic and being welded to said sheet portion in a fluidtight manner.
5. The combination of claim 4 and wherein said thermoplastic sheet portion defines part of the interior of said container, and has an inner surface directed toward the interior of said container, said base member being welded to said thermoplastic sheet portion at said surface thereof in the interior of said container.
6. The combination of claim 1 and wherein said yieldable means is in the form of a flexible disc, said hollow member having an inner projection holding said disc against said inner surface of said base member, and said disc having a peripheral portion extending beyond said projection to be deflected by the excess pressure in the interior of said container when said yieldable means responds to place said valve opening in communication with said chamber.
7. The combination of claim 6 and wherein said chamber surrounds said projection and said disc has a periphery extending beyond said valve opening and beyond said projection.
8. The combination of claim 7 and wherein said disc is made of rubber and is elastic.
9. The combination of claim 7 and wherein said valve opening is situated centrally of said base member and said projection and disc are both coaxially aligned with said valve opening.

Claims (9)

1. A container comprising a flexible sheet material capable of being sealed for closing off the interior of the container from the outer atmosphere, and a one-way valve means carried by said flexible sheet material for preventIng outside air from flowing into the container, said one-way valve means including a base member carried by said sheet material, having a surface directed away from the interior of said container, and formed with a valve opening, yieldable means engaging said surface of said base member, extending across said valve opening, and normally assuming a position engaging the latter surface for maintaining said one-way valve means closed, said valve means further including a hollow member fixed to said surface of said base member and defining therewith an inner chamber in which said yieldable means is located, said hollow member being formed with a discharge opening through which said chamber communicates with the outer atmosphere, and said yieldable means responding to an excess of pressure in the interior of said container over the outer atmospheric pressure by yielding to place said valve opening in communication with said chamber until said excess pressure in the interior of said container diminishes to a value where said yieldable means again assumes said position closing said valve opening.
2. The combination of claim 1 and wherein said hollow member of said valve means has an inner projection holding said yieldable means against said surface of said base member.
3. The combination of claim 1 and wherein said sheet material is formed with an opening with which said valve opening registers.
4. The combination of claim 3 and wherein said sheet material includes a thermoplastic sheet portion and said base member being made of a plastic and being welded to said sheet portion in a fluidtight manner.
5. The combination of claim 4 and wherein said thermoplastic sheet portion defines part of the interior of said container, and has an inner surface directed toward the interior of said container, said base member being welded to said thermoplastic sheet portion at said surface thereof in the interior of said container.
6. The combination of claim 1 and wherein said yieldable means is in the form of a flexible disc, said hollow member having an inner projection holding said disc against said inner surface of said base member, and said disc having a peripheral portion extending beyond said projection to be deflected by the excess pressure in the interior of said container when said yieldable means responds to place said valve opening in communication with said chamber.
7. The combination of claim 6 and wherein said chamber surrounds said projection and said disc has a periphery extending beyond said valve opening and beyond said projection.
8. The combination of claim 7 and wherein said disc is made of rubber and is elastic.
9. The combination of claim 7 and wherein said valve opening is situated centrally of said base member and said projection and disc are both coaxially aligned with said valve opening.
US791304*A 1968-01-23 1969-01-15 Flexible sealed container provided with a one-way safety valve Expired - Lifetime US3595467A (en)

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BE (1) BE727317A (en)
CH (1) CH481808A (en)
DE (1) DE1903048B2 (en)
ES (1) ES160142Y (en)
FR (1) FR2000577A1 (en)
NL (1) NL158133B (en)

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2213908A1 (en) * 1971-03-24 1972-10-05 Canadian Industries Ltd., Montreal, Quebec (Kanada) Valve bag
US3799427A (en) * 1972-12-04 1974-03-26 L Goglio Degassing valve for hermetically sealed flexible containers and a container provided with the valve
US3833166A (en) * 1971-03-24 1974-09-03 Canadian Ind Valve bag
US3886937A (en) * 1971-02-12 1975-06-03 American Hospital Supply Corp Medical administration set for dispensing plural medical liquids
US3949934A (en) * 1973-06-14 1976-04-13 Luigi Goglio Container having a valve movable between one-way flow and closed positions
US4000846A (en) * 1975-06-30 1977-01-04 Dunkin' Donuts Incorporated Pressure relief valve and bag incorporating same
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US5700245A (en) * 1995-07-13 1997-12-23 Winfield Medical Apparatus for the generation of gas pressure for controlled fluid delivery
EP0870697A1 (en) * 1997-04-07 1998-10-14 Fres-Co System Usa, Inc. Hermetically sealed package provided with a vacuum relief valve
US5887755A (en) * 1995-06-06 1999-03-30 Quantic Biomedical Partners Wound sealant preparation and application device and method
US6056439A (en) * 1999-01-28 2000-05-02 Fres-Co System Usa, Inc. High flow/volume valve for flexible packaging
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US6274181B1 (en) * 1990-04-27 2001-08-14 Kapak Corporation Vented pouch arrangement and method
US20040000336A1 (en) * 2002-03-27 2004-01-01 P.L.V. Spa One-way degassing valve for containers of powder products such as coffee and the like
US6776301B2 (en) 2002-02-07 2004-08-17 Sonoco Development, Inc. Cap with one-way de-gas feature
US20040187924A1 (en) * 2001-08-21 2004-09-30 Herbert Stotkiewitz Pressure control valve for a packaging container and device for attaching the pressure control valve to a material web
US20050103798A1 (en) * 2003-11-18 2005-05-19 Goglio Luigi One-way degassing valve for airtight containers for products that develop gas
US7022058B2 (en) 2001-02-21 2006-04-04 Tilia International, Inc. Method for preparing air channel-equipped film for use in vacuum package
US20060092451A1 (en) * 2004-10-28 2006-05-04 Kabushiki Kaisha Toshiba Printing control system
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US20070017846A1 (en) * 2003-07-16 2007-01-25 Ad Japan Corporation Valve gear
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US7534039B2 (en) 2004-07-22 2009-05-19 Sunbeam Products, Inc. Vacuum packaging films patterned with protruding cavernous structures
US20090232423A1 (en) * 2008-03-14 2009-09-17 Azad Sabounjian Valve for vacuum storage bag
US7625459B2 (en) 2003-03-05 2009-12-01 Sunbeam Products, Inc. Method for manufacturing liquid-trapping bag for use in vacuum packaging
US20100187230A1 (en) * 2009-01-28 2010-07-29 Fres-Co System Usa, Inc. One-way valve for flexible package, method of making the same and package including a one-way valve
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US20100258214A1 (en) * 2006-01-09 2010-10-14 Joerg Zimmermann Refueling valve for a fuel storage system and method therefor
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US20110136639A1 (en) * 2009-12-08 2011-06-09 Haver & Boecker Ohg Device and method for processing of film tubes to open-mouthed bags and for filling same with bulk materials
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US20110168708A1 (en) * 2010-01-13 2011-07-14 Sonoco Development, Inc. Overcap For A Container
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RU2443884C2 (en) * 2006-05-18 2012-02-27 Мту Аэро Энджинз Гмбх Gas turbine with modular fuel feed device
US20120141637A1 (en) * 2010-12-07 2012-06-07 Mooney Kristin Ann Multiple Compartment Coffee Packaging System
US8636034B2 (en) 2011-08-31 2014-01-28 Plitek, L.L.C. Oil-less and wetted pressure relief valves having an integrated filter
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US8925579B2 (en) 2006-03-02 2015-01-06 Pacific Bag, Inc. Pressure relief valve
US9187229B2 (en) 2011-08-31 2015-11-17 Plitek, L.L.C. Oil-less pressure relief valves
US20160089647A1 (en) * 2014-09-26 2016-03-31 Carrier Corporation Re-fillable syrup bin for beverage machine
US9758287B2 (en) 2014-05-15 2017-09-12 Panache Pantry Compositions and methods for improved packaging and storage of dry foodstuffs
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US10384850B2 (en) 2014-05-15 2019-08-20 Panache Pantry Articles and methods for improved packaging and storage of consumer products having an aroma
US11352183B2 (en) 2020-03-05 2022-06-07 Plitek, L.L.C. Pressure relief valve with wetting fluid reservoirs

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Cited By (90)

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US3886937A (en) * 1971-02-12 1975-06-03 American Hospital Supply Corp Medical administration set for dispensing plural medical liquids
DE2213908A1 (en) * 1971-03-24 1972-10-05 Canadian Industries Ltd., Montreal, Quebec (Kanada) Valve bag
US3833166A (en) * 1971-03-24 1974-09-03 Canadian Ind Valve bag
US3799427A (en) * 1972-12-04 1974-03-26 L Goglio Degassing valve for hermetically sealed flexible containers and a container provided with the valve
US3949934A (en) * 1973-06-14 1976-04-13 Luigi Goglio Container having a valve movable between one-way flow and closed positions
US4000846A (en) * 1975-06-30 1977-01-04 Dunkin' Donuts Incorporated Pressure relief valve and bag incorporating same
US4420015A (en) * 1981-01-07 1983-12-13 Sig-Schweizerische Industrie-Gesellschaft Installation of an excess pressure valve in a hermetically sealed flexible container
US4444219A (en) * 1981-06-29 1984-04-24 Wipf Ag Verpackungen Overpressure valve for packages with flexible walls
US4871093A (en) * 1983-12-14 1989-10-03 Esther Burshtain Container for dispensing a material
US4834554A (en) * 1987-11-16 1989-05-30 J. C. Brock Corp. Plastic bag with integral venting structure
US4890637A (en) * 1988-12-12 1990-01-02 Flavorcoffee Co. Inc. One way valve
US5121840A (en) * 1989-09-29 1992-06-16 Henk Schram Inflatable body with a valve
US6274181B1 (en) * 1990-04-27 2001-08-14 Kapak Corporation Vented pouch arrangement and method
US6423356B2 (en) 1990-04-27 2002-07-23 Kapak Corporation Vented pouch arrangement and method
US5578005A (en) * 1993-08-06 1996-11-26 River Medical, Inc. Apparatus and methods for multiple fluid infusion
US5588556A (en) * 1993-08-06 1996-12-31 River Medical, Inc. Method for generating gas to deliver liquid from a container
US5515994A (en) * 1993-12-23 1996-05-14 Goglio; Luigi Degassing valve for aromatic products, such as coffee and similar products
US5558441A (en) * 1994-12-12 1996-09-24 Morrison; Kenneth V. Receptacle
US5887755A (en) * 1995-06-06 1999-03-30 Quantic Biomedical Partners Wound sealant preparation and application device and method
US5700245A (en) * 1995-07-13 1997-12-23 Winfield Medical Apparatus for the generation of gas pressure for controlled fluid delivery
US5584409A (en) * 1995-09-18 1996-12-17 Chemberlen; Christopher H. One direction ventilation valves
US5893461A (en) * 1997-04-07 1999-04-13 Fres-Co System Usa, Inc. Pressure vacuum release hermetic valve for flexible packages
US5992635A (en) * 1997-04-07 1999-11-30 Fres-Co System Usa, Inc. Pressure vacuum release hermetic valve for flexible packages
EP0870697A1 (en) * 1997-04-07 1998-10-14 Fres-Co System Usa, Inc. Hermetically sealed package provided with a vacuum relief valve
US6056439A (en) * 1999-01-28 2000-05-02 Fres-Co System Usa, Inc. High flow/volume valve for flexible packaging
US6070728A (en) * 1999-02-02 2000-06-06 Fres-Co System Usa, Inc. Filter bag with valve
US6213645B1 (en) 2000-03-14 2001-04-10 Fres-Co System Usa, Inc. Flexible package with sealed edges and easy to open mouth
US6539691B2 (en) 2000-03-14 2003-04-01 Fres-Co System Usa, Inc. Flexible package with sealed edges and easy to open mouth
US7022058B2 (en) 2001-02-21 2006-04-04 Tilia International, Inc. Method for preparing air channel-equipped film for use in vacuum package
US20040187924A1 (en) * 2001-08-21 2004-09-30 Herbert Stotkiewitz Pressure control valve for a packaging container and device for attaching the pressure control valve to a material web
US7178550B2 (en) * 2001-08-21 2007-02-20 Robert Bosch Gmbh Pressure control valve for a packaging container and device for attaching the pressure control valve to a material web
US6776301B2 (en) 2002-02-07 2004-08-17 Sonoco Development, Inc. Cap with one-way de-gas feature
US20040000336A1 (en) * 2002-03-27 2004-01-01 P.L.V. Spa One-way degassing valve for containers of powder products such as coffee and the like
US7138025B2 (en) 2003-03-05 2006-11-21 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated tray for use in vacuum packaging
US7087130B2 (en) 2003-03-05 2006-08-08 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated zipper for use in vacuum packaging
US7625459B2 (en) 2003-03-05 2009-12-01 Sunbeam Products, Inc. Method for manufacturing liquid-trapping bag for use in vacuum packaging
US7517484B2 (en) 2003-03-24 2009-04-14 Sunbeam Products, Inc. Forming evacuation channels during single and multi-layer extrusion process
US7789563B2 (en) * 2003-07-16 2010-09-07 Ad Japan Corporation Valve gear
US20070017846A1 (en) * 2003-07-16 2007-01-25 Ad Japan Corporation Valve gear
EP1538107A3 (en) * 2003-11-18 2006-10-04 P.L.V. Spa One-way degassing valve for airtight containers
EP1538107A2 (en) * 2003-11-18 2005-06-08 P.L.V. Spa One-way degassing valve for airtight containers
US20050103798A1 (en) * 2003-11-18 2005-05-19 Goglio Luigi One-way degassing valve for airtight containers for products that develop gas
US7220053B2 (en) 2003-12-16 2007-05-22 Sunbeam Products, Inc. Flexible composite bag for vacuum sealing
US7534039B2 (en) 2004-07-22 2009-05-19 Sunbeam Products, Inc. Vacuum packaging films patterned with protruding cavernous structures
US20060092451A1 (en) * 2004-10-28 2006-05-04 Kabushiki Kaisha Toshiba Printing control system
US7294354B2 (en) 2004-10-29 2007-11-13 Sonoco Development, Inc. Container with gas release feature
US20080060321A1 (en) * 2004-10-29 2008-03-13 Sonoco Development, Inc. Container with gas release feature
US7596931B2 (en) 2004-10-29 2009-10-06 Sonoco Development, Inc. Container with gas release feature
US7938144B2 (en) * 2006-01-09 2011-05-10 Adobe Systems Incorporated Refueling valve for a fuel storage system and method therefor
US20100258214A1 (en) * 2006-01-09 2010-10-14 Joerg Zimmermann Refueling valve for a fuel storage system and method therefor
US8925579B2 (en) 2006-03-02 2015-01-06 Pacific Bag, Inc. Pressure relief valve
RU2443884C2 (en) * 2006-05-18 2012-02-27 Мту Аэро Энджинз Гмбх Gas turbine with modular fuel feed device
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US8827556B2 (en) 2007-03-16 2014-09-09 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US8176604B2 (en) 2007-03-16 2012-05-15 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US8231273B2 (en) 2007-06-15 2012-07-31 S.C. Johnson & Son, Inc. Flow channel profile and a complementary groove for a pouch
US20090026199A1 (en) * 2007-07-27 2009-01-29 Jeor Bret De Pressure vacuum release hermetic valve for rigid container packages
US8066433B2 (en) 2008-03-14 2011-11-29 Pro-Mart Industries, Inc. Valve for vacuum storage bag
US20090232423A1 (en) * 2008-03-14 2009-09-17 Azad Sabounjian Valve for vacuum storage bag
WO2010088107A1 (en) 2009-01-28 2010-08-05 Fres-Co System Usa, Inc. One-way valve for flexible package, method of making the same and package including a one-way valve
US20100187230A1 (en) * 2009-01-28 2010-07-29 Fres-Co System Usa, Inc. One-way valve for flexible package, method of making the same and package including a one-way valve
US8434633B2 (en) 2009-01-28 2013-05-07 Fres-Co System Usa, Inc. One-way valve for flexible package and package including a one-way valve
US20110136639A1 (en) * 2009-12-08 2011-06-09 Haver & Boecker Ohg Device and method for processing of film tubes to open-mouthed bags and for filling same with bulk materials
US8827097B2 (en) 2010-01-13 2014-09-09 Sonoco Development, Inc. Overcap for a container
US20110168708A1 (en) * 2010-01-13 2011-07-14 Sonoco Development, Inc. Overcap For A Container
EP2345598A1 (en) 2010-01-13 2011-07-20 Sonoco Development, Inc. Overcap for a container
CN102803088A (en) * 2010-01-29 2012-11-28 戈利奥有限公司 Biodegradable one-way venting valve for an airtight container
EA027406B1 (en) * 2010-01-29 2017-07-31 Гольо С.П.А. One-way venting valve for an airtight container
US9481502B2 (en) 2010-01-29 2016-11-01 Goglio S.P.A. Biodegradable one-way venting valve for an airtight container
WO2011091924A1 (en) 2010-01-29 2011-08-04 Goglio S.P.A. Biodegradable one-way venting valve for an airtight container
CN102803088B (en) * 2010-01-29 2014-11-26 戈利奥有限公司 Biodegradable one-way venting valve for an airtight container
EP2354032A1 (en) 2010-01-29 2011-08-10 Goglio S.p.A. Biodegradable one-way venting valve for an airtight container
US20120141637A1 (en) * 2010-12-07 2012-06-07 Mooney Kristin Ann Multiple Compartment Coffee Packaging System
US8636034B2 (en) 2011-08-31 2014-01-28 Plitek, L.L.C. Oil-less and wetted pressure relief valves having an integrated filter
US9187229B2 (en) 2011-08-31 2015-11-17 Plitek, L.L.C. Oil-less pressure relief valves
US8783292B2 (en) 2011-08-31 2014-07-22 Plitek, L.L.C. Oil-less pressure relief valves
US10384850B2 (en) 2014-05-15 2019-08-20 Panache Pantry Articles and methods for improved packaging and storage of consumer products having an aroma
US9758287B2 (en) 2014-05-15 2017-09-12 Panache Pantry Compositions and methods for improved packaging and storage of dry foodstuffs
US20160089647A1 (en) * 2014-09-26 2016-03-31 Carrier Corporation Re-fillable syrup bin for beverage machine
US10035115B2 (en) * 2014-09-26 2018-07-31 Taylor Commercial Foodservice Inc. Re-fillable syrup bin for beverage machine
WO2018106631A1 (en) 2016-12-09 2018-06-14 Fres-Co System Usa, Inc. Flexible packages with clog resistant degassing valve and methods of making the same
US10486881B2 (en) 2016-12-09 2019-11-26 Fres-Co System Usa, Inc. Flexible packages with clog resistant degassing valve and methods of making the same
US10358275B1 (en) 2017-06-16 2019-07-23 Plitek, L.L.C. Pressure relief valve with a plural-part dry strap
US11352183B2 (en) 2020-03-05 2022-06-07 Plitek, L.L.C. Pressure relief valve with wetting fluid reservoirs

Also Published As

Publication number Publication date
DE1903048A1 (en) 1969-09-04
BE727317A (en) 1969-07-01
ES160142Y (en) 1972-06-16
FR2000577A1 (en) 1969-09-12
NL6900883A (en) 1969-07-25
CH481808A (en) 1969-11-30
NL158133B (en) 1978-10-16
DE1903048B2 (en) 1976-05-26
ES160142U (en) 1970-11-01

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