US20020009240A1 - Storage bag with one-way air valve - Google Patents
Storage bag with one-way air valve Download PDFInfo
- Publication number
- US20020009240A1 US20020009240A1 US09/891,812 US89181201A US2002009240A1 US 20020009240 A1 US20020009240 A1 US 20020009240A1 US 89181201 A US89181201 A US 89181201A US 2002009240 A1 US2002009240 A1 US 2002009240A1
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- United States
- Prior art keywords
- bag
- valve strip
- edge
- valve
- bonded
- 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.)
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Classifications
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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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/01—Ventilation or drainage of bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
- B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container
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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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/18—Containers, packaging elements or packages, specially adapted for particular articles or materials for wearing apparel, headwear or footwear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Toys (AREA)
Abstract
Description
- This application is a continuation-in-part of Application Ser. No. 09/630,038, filed Aug. 1, 2000 by Janet L. Skeens and Brent G. Anderson, and entitled “Storage Bag With One-Way Air Valve,” which is a continuation-in-part of Application Ser. No. 09/374,484, filed Aug. 13, 1999 by Janet L. Skeens and Brent G. Anderson and entitled “Storage Bag With One-Way Air Valve.”
- 1. Field of Invention
- The present invention relates to storage bags, and in particular to reusable evacuable storage bags with integral one-way air valves.
- 2. Related Art
- Evacuable flexible storage bags allow a user to compress and subsequently store and carry bulky items, e.g., clothing. Such bags are typically made of plastic and include an airtight seal. After placing one or more items inside the bag, the user partially closes the seal. The user then presses on the bag to force air through the remaining opening in the seal. Once air is forced through the opening, the user fully closes the seal and the stored items remain compressed by ambient air pressure. However, such bags are difficult to use.
- One problem with many current airtight storage bags is that some air may leak back into the bag as the user attempts to close the seal. Another problem is that forces on the bag during compressing tend to fully open the partially closed seal, thus requiring the user to fully close the seal once the bag is compressed. Yet another problem is that many users find it awkward to maintain compression force on the bag while fully closing the seal. Still another problem is low cabin pressure during air travel may cause air inside the bag to expand and open the seal.
- One solution is to equip an airtight storage bag with a one-way air valve. The valve allows the user to force air out of, but prevents air from reentering, the bag. U.S. Pat. No. 5,540,500 discloses a sealed bag including a check valve. The '500 patent discloses a check valve including at least two rectangular plastic films. The plastic films are bonded together to form a flat pipe that extends between the storage bag body and a covering envelope. However, articles placed in the bag may fold the pipe back on itself and block the valve. And the covering envelope is required to protect the valve portion extending from the bag body.
- What is required is a simpler one-way check valve that is more reliable, and is easier and more economical to manufacture.
- In accordance with the invention, a flexible, evacuable storage bag includes a one-way air valve that has a single strip bonded between the top and bottom sheets used to make the bag. The bag also includes an airtight seal through which the user places one or more items to be stored into the bag.
- The valve strip is sandwiched between the top and bottom sheets. In one case the strip is bonded along the strip's edges to the top and bottom sheets to form two passageways. In another case the strip is bonded along the strip's edges to form a single passageway. The passageways extend from the storage portion of the bag to the outside.
- The user may, for example, insert one or more items to be stored through the opening and closes the airtight seal. The user then puts pressure on the bag to force air from a storage portion through the valve to the outside. Once air has been evacuated from the bag, ambient pressure holds the top and bottom sheets against the valve strip to prevent air from returning to the bag.
- FIG. 1 is a plan view of an embodiment of the invention.
- FIG. 2 is an exploded perspective view of an embodiment of the invention.
- FIGS. 3a, 3 b, and 3 c are perspective views showing one method of using the invention.
- FIG. 4 is an exploded perspective view of a second embodiment of the invention.
- FIG. 5 is an exploded perspective view of a valve embodiment.
- FIG. 1 is a plan view of a
flexible storage bag 10 in accordance with the invention. As shown,bag 10 has astorage portion 12 formed by bonding two flexible plastic sheets alongedges bag 10 as rectangular, although other embodiments may have other shapes. Airtightseal 14 is placed in opening 15 between the two sheets. Whenseal 14 is open, a user places one or more items to be stored through opening 15 intostorage portion 12 and then closesseal 14. Avalve 16 allows air to pass in one direction fromstorage portion 12 to outsidebag 10. As shown,valve 16 is positioned alongedge 13 c ofstorage portion 12,opposite seal 14, but inother embodiments valve 16 may be placed along another edge ofstorage portion 12. - FIG. 2 is an exploded perspective view of
bag 10. As shown,bag 10 includes atop sheet 20 and abottom sheet 22. In one embodiment,sheets sheets edges -
Bag 10 also includestop portion 24 andbottom portion 26 ofairtight seal 14.Top portion 24 is bonded totop sheet 20 using conventional resistive heating. Similarly,bottom portion 26 is bonded tobottom sheet 22 using resistive heating. Other bonding methods may be used. In oneembodiment seal 14 is a conventional interlocking resealable airtight fastener. The fastener is manufactured by MiniGrip ZIP-PAK, an ITW Company, with a marketing office located at 27001 La Plaz, Suite 400, Mission Viejo Calif. 92691. Other embodiments may use other airtight seals that are either resealable or permanent. - FIG. 2 shows
valve strip 28 placed betweentop sheet 20 andbottom sheet 22. In oneembodiment valve strip 28 is a single sheet of conventional blended low density polyethylene with high slip. Other embodiments may use different materials. - As shown,
valve strip 28 is bonded betweentop sheet 20 andbottom sheet 22 along edges 29 a and 29 b. In one embodiment bonding is done using conventional resistive heating. Other embodiments may use different bonding methods.Valve strip 28 is positioned so that after bonding edges 29 a and 29 b two passageways are created. The top passageway is betweentop sheet 20 andvalve strip 28. The bottom passageway is betweenbottom sheet 22 andvalve strip 28. As shown, bonded side 29 b ofvalve strip 28 is coincident with bondedbottom edges 13 c oftop sheet 20 andbottom sheet 22. In the embodiment shown,strip 28 extends fromedge 13 a to edge 13 b. In other embodiments strip 28 may be shortened so as not to reach either or bothedges 13 a or 13 b. - Referring again to FIG. 1, each unique top and
bottom passageway 30 a and 30 b (hidden behindpassageway 30 a), respectively, has at one end anopening 31 intostorage portion 12 and at the other end anopening 32 to the environment outsidebag 10. In one embodiment each passageway has a width W1 of 1.00 inches. And in one embodiment the width W2 ofopenings openings -
Top sheet 20 andbottom sheet 22 normally contact the surface ofvalve strip 28 when no air or other substance (e.g., water) is in either passageway. Whenairtight seal 14 is closed and the pressure insidestorage portion 12 is made greater than the ambient pressure, air passes throughopenings 31, travels alongpassageways 30 a and 30 b, and exits throughopenings 32. The ambient pressure then closespassageways 30 a and 30 b by pressingtop sheet 20 andbottom sheet 22 againstvalve strip 28. Air is therefore prevented from returning tostorage portion 12. - FIGS. 3a-3 c illustrate one use of the present invention. As shown in FIG. 3a, a user opens
seal 14 and places an item to be stored through opening 15 intostorage portion 12. The user then closesbag 10 by makingseal 14 airtight, as depicted in FIG. 3b. Next, the user expels air by rolling, beginning at an edge oppositevalve 16,bag 10 towardsvalve 16. FIG. 3c shows that as the user rolls, air as represented by the arrows passes fromstorage portion 12 throughopenings 31, along the passages, and exits throughopenings 32. The user then unrolls the bag containing the stored item.Storage portion 12 remains partially evacuated and ambient air pressure prevents air from returning through the passages. - FIG. 4 is an exploded perspective view of a second embodiment of the invention. The embodiment illustrated by FIG. 4 in many cases provides an improved one-way seal that prevents air, once evacuated, from returning to inside the storage bag.
Top sheet 40 andbottom sheet 42 are bonded (e.g., using heat) along side edges 40 a, 42 a and opposite side edges 40 b, 42 b, respectively. The shaded portions in the drawings are illustrative of the bonded areas onsheets top edges 40 c, 42 c ofsheets way air valve 46 is formed atbottom edges 40 d, 42 d ofsheets sheets valve 46forms storage portion 48 ofevacuable storage bag 50. In onecase sheets seal 44 and places an item to be stored intostorage portion 48. The user then closesseal 44 and forces air fromstorage portion 48 through one-way valve 46. - As shown in FIG. 4,
valve strip 52 is sandwiched betweensheets adjacent bottom edges 40 d, 42 d, respectively.Valve strip 52 is rectangular and haslong edges 52 a and 52 b, andshort edges Edges valve strip 52. The shaded areas depicted onvalve strip 52 are illustrative of the bonded areas (only the areas bonded totop sheet 40 are shown). As shown in FIG. 4,valve strip 52 extends the entire width of top andbottom sheets valve strip 52 is a polyethylene strip, approximately 0.002 inches (2 mil) thick. Polyethylene sheets in contact with each other have good mutual surface attraction. Thus a good seal is provided betweenstrip 52 and the inner polyethylene layer oftop sheet 40. Other materials that provide a good mutual surface attraction may be used forvalve strip 52 and the inner side oftop sheet 40. -
Valve strip 52 is bonded tobottom sheet 42 along the entire length oflong edge 52 a, as illustrated by bondingline 42 e onbottom sheet 42 that isadjacent storage portion 48.Valve strip 52 is also bonded tobottom sheet 42 alongshort edges valve strip 52 is bonded tobottom sheet 42 along a portion of long edge 52 b, as illustrated in FIG. 4 by the shaded area extending partially alongbottom edge 42 d ofsheet 42. In another case,valve strip 52 is bonded tobottom sheet 42 along the entire length of long edge 52 b, as illustrated in FIG. 4 by the alternate position line extending alongbottom edge 42 d. The bonding betweenbottom sheet 42 andvalve strip 52 is such that center portion 52 e ofvalve strip 52 is not bonded tobottom sheet 42. -
Valve strip 52 is also bonded totop sheet 40 along a portion oflong edge 52 a, as illustrated by bondingline 40 e ontop sheet 40.Valve strip 52 is also bonded totop sheet 40 alongshort edges top sheet 40 andvalve strip 52 definespassageway 54 that extends from opening 56 intostorage portion 48 to opening 58 that leads to the environment outside ofbag 50. - In general, it has been determined that the effectiveness of the one-way seal along
passageway 54 betweenvalve strip 52 andtop sheet 40 improves as the length ofpassageway 54 is increased and the width ofpassageway 54 is decreased. However, the width is made such that air being evacuated fromstorage portion 48 passes throughpassageway 54 without undue delay as the user rollsbag 50. In onecase opening 56 is approximately 1 ⅜ inches wide andopening 58 is approximately 1 ⅝ inches wide. The width ofpassageway 54 is approximately 1 ⅛ inches and the length ofpassageway 54 from opening 56 to opening 58 is approximately 14 ¼ inches. The width ofsheets - FIG. 5 is an exploded perspective view of another valve embodiment. As shown in FIG. 5,
valve 62 is similar tovalve 46 shown in FIG. 4, although only one short edge ofvalve strip 52 is bonded totop sheet 40. Thus theopening 64 that leads to the environment outside of the storage bag is differently oriented than opening 58 in FIG. 4.Valve strip 52 is bonded tobottom sheet 42 along the entire length oflong edge 52 a and along the entire length of long edge 52 b (in another case, only a portion of long edge 52 b is bonded to bottom sheet 42). As shown in FIG. 5, only oneshort side 52 c is bonded tobottom sheet 42. In another case, bothshort sides bottom sheet 42, as illustrated by the alternate position line extending along side 42 b ofbottom sheet 42. Center portion 52 e ofvalve strip 52 remains unbonded tobottom sheet 42.Valve strip 52 is bonded totop sheet 40 along a portion oflong edge 52 a, the entire length of long edge 52 b, and alongshort edge 52 c so thatpassageway 54 extends from opening 56 intostorage portion 48 to opening 64 that leads to the environment outside the bag atshort edge 52 d. - In one
case bag 50 is manufactured by first bonding a portion ofvalve strip 52 tobottom sheet 42, and then bonding thestrip 52 andsheet 42 combination totop sheet 40. A portion oflong edge 52 a, slightly wider than the width ofopening 56, ofvalve strip 50 is first bonded tobottom sheet 42 as shown byarea 60 in FIG. 4. Sincevalve strip 52 is thin, the bond is formed in one case using a seal head heated to approximately 270 degrees Fahrenheit. Then, the remaining bonds inbag 50 are formed using seal heads heated to approximately 350 degrees Fahrenheit. Other temperatures may be used in other cases. In anothercase bag 50 is manufactured by forming all bonds at once. A heat resistive material (e.g., TEFLON) (not shown) is placed betweentop sheet 40 andvalve strip 52 whereopening 56 is to be formed. Then,top sheet 40,valve strip 52, andbottom sheet 42 are heat bonded together, and the heat resistive material is removed from opening 56. - Referring to FIGS. 4 and 5, a potential passageway between
valve strip 52 andbottom sheet 42 that extends fromstorage portion 48 to outside the bag is blocked by bondingvalve strip 52 tosheet 42 below opening 56 intostorage portion 48 rather than below opening 58 (FIG. 4) or 64 (FIG. 5). It has been determined that if a passageway betweenvalve strip 52 andbottom sheet 42 is sealed closest to the exit opening (e.g., nearshort edge 52 d), that air being forced fromstorage portion 48 during evacuation tends to inflate the passageway betweenbottom sheet 42 andvalve strip 52, thereby making it difficult to force air throughpassageway 54 betweenvalve strip 52 andtop sheet 40. - Persons skilled in the art will understand that many variations of the present invention are possible. The present invention is therefore limited only by the scope of the following claims.
Claims (14)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/891,812 US6357915B2 (en) | 1999-08-13 | 2001-06-25 | Storage bag with one-way air valve |
DE60213408T DE60213408T2 (en) | 2001-06-25 | 2002-05-29 | STORAGE BAG WITH INTAKE AIR VALVE |
EP02731966A EP1399367B1 (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve |
AU2002303901A AU2002303901B2 (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve |
CNB028166329A CN1294054C (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve |
JP2003506779A JP4015617B2 (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve |
CA002452193A CA2452193C (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve |
KR1020037016849A KR100918072B1 (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve, and method of manufacturing the same |
PCT/US2002/016909 WO2003000564A1 (en) | 2001-06-25 | 2002-05-29 | Storage bag with one-way air valve |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/374,484 US6116781A (en) | 1999-08-13 | 1999-08-13 | Storage bag with one-way air valve |
US63003800A | 2000-08-01 | 2000-08-01 | |
US09/891,812 US6357915B2 (en) | 1999-08-13 | 2001-06-25 | Storage bag with one-way air valve |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US63003800A Continuation-In-Part | 1999-08-13 | 2000-08-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020009240A1 true US20020009240A1 (en) | 2002-01-24 |
US6357915B2 US6357915B2 (en) | 2002-03-19 |
Family
ID=25398859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/891,812 Expired - Lifetime US6357915B2 (en) | 1999-08-13 | 2001-06-25 | Storage bag with one-way air valve |
Country Status (9)
Country | Link |
---|---|
US (1) | US6357915B2 (en) |
EP (1) | EP1399367B1 (en) |
JP (1) | JP4015617B2 (en) |
KR (1) | KR100918072B1 (en) |
CN (1) | CN1294054C (en) |
AU (1) | AU2002303901B2 (en) |
CA (1) | CA2452193C (en) |
DE (1) | DE60213408T2 (en) |
WO (1) | WO2003000564A1 (en) |
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US20040188310A1 (en) * | 2003-03-31 | 2004-09-30 | Peter Hamilton | Ventable storage bag |
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US20070267414A1 (en) * | 2006-05-13 | 2007-11-22 | Haver & Boecker Ohg Maschinenfabrik | Package |
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US20180319564A1 (en) * | 2015-10-01 | 2018-11-08 | Dennis R. Salazar | Method of creating a vacuum in a storage bag |
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Also Published As
Publication number | Publication date |
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CN1547543A (en) | 2004-11-17 |
CA2452193C (en) | 2006-11-28 |
JP4015617B2 (en) | 2007-11-28 |
DE60213408T2 (en) | 2006-11-23 |
DE60213408D1 (en) | 2006-09-07 |
AU2002303901B2 (en) | 2005-02-03 |
CN1294054C (en) | 2007-01-10 |
KR100918072B1 (en) | 2009-09-22 |
EP1399367A1 (en) | 2004-03-24 |
US6357915B2 (en) | 2002-03-19 |
CA2452193A1 (en) | 2003-01-03 |
KR20040034618A (en) | 2004-04-28 |
EP1399367B1 (en) | 2006-07-26 |
JP2004531435A (en) | 2004-10-14 |
WO2003000564A1 (en) | 2003-01-03 |
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