EP1802537B1 - Überdruckventil für einen verpackungsbehälter - Google Patents

Überdruckventil für einen verpackungsbehälter Download PDF

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Publication number
EP1802537B1
EP1802537B1 EP05786948A EP05786948A EP1802537B1 EP 1802537 B1 EP1802537 B1 EP 1802537B1 EP 05786948 A EP05786948 A EP 05786948A EP 05786948 A EP05786948 A EP 05786948A EP 1802537 B1 EP1802537 B1 EP 1802537B1
Authority
EP
European Patent Office
Prior art keywords
region
pressure relief
relief valve
depression
valve according
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.)
Active
Application number
EP05786948A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1802537A1 (de
Inventor
Herbert Stotkiewitz
Hans-Peter Stadel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1802537A1 publication Critical patent/EP1802537A1/de
Application granted granted Critical
Publication of EP1802537B1 publication Critical patent/EP1802537B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4358—Liquid supplied at valve interface
    • 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]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7908—Weight biased
    • Y10T137/7909—Valve body is the weight
    • Y10T137/7913—Guided head
    • Y10T137/7914—Cage

Definitions

  • the invention relates to a pressure relief valve for a packaging container according to the preamble of claim 1.
  • the lowest possible opening pressure of the pressure relief valve is required, that is, the valve membrane should be as easy as possible to lift off the body to form a passageway.
  • the pressure relief valve according to the invention for a packaging container with the features of claim 1 has the advantage that it opens at relatively low pressures in the package inside (for example, in the order of 5 mbar), that is, in the inside of the package resulting gases even at a relatively low pressure to the outside passes.
  • This is achieved according to the invention substantially by an at least partially unplane design of the body in the overlap area with the valve membrane. As a result, the adhesion forces between the base body and the valve membrane are reduced as a result of the interposed sealing medium, so that the lifting of the valve membrane is facilitated.
  • FIG. 1 a first pressure relief valve 10 is shown.
  • the pressure relief valve 10 is mounted on the inside 2 of a packaging material wall 1, which forms by appropriate folding and sealing a packaging container or a packaging bag for packing gas-releasing food such as coffee.
  • the pressure relief valve 10 has a round body 11 made of plastic by injection molding.
  • the main body 11 has a peripheral edge region 12, on whose inner side 2 of the packaging material wall 1 facing end face, for example, a circumferential, triangular in cross-section elevation 13 is formed.
  • the elevation 13 By means of the elevation 13, the base body 11 on the inside 2 tightly fasten the packaging material wall 1 by ultrasonic welding.
  • the use of conventional adhesives or a contact seal is conceivable in order to fasten the base body 11 with its edge region 12 tightly with the inside 2 of the packaging material wall 1.
  • a plurality of holes, cuts or perforations 5 are preferably formed in the packaging material wall 1, which allow the passage of gas produced by the food to the outside of the packaging, that is to the ambient air.
  • the base body 11 has a base region 15 which is lowered in relation to the edge region 12.
  • the base region 15 is not flat or flat on the side facing the packaging material wall 2, but arched.
  • a concave curvature is used, such that the central region 16 of the base region 15 to the packaging material wall 2 has a greater distance than the outer region 17 of the base region 15.
  • a recess 20 formed on the packaging material 2 side facing.
  • the recess 20 has in plan view ( FIG. 2 ) approximately in the form of an "8".
  • each of the two through holes 23, 24 is surrounded by a tower-like elevation 25, 26, which is circular in plan view. How best of the FIG. 4 can be seen, each of the two elevations 25, 26 has an inlet radius 27, wherein the upper end face 28, 29 of the elevation 25, 26 runs at a level which is just below the height of the base region 15 immediately adjacent to the depression 20.
  • elevations 25, 26 can also extend up to the level of the base area 15 in the central area 16, or even beyond.
  • a further recess 30 is formed, which extends to the edge region 12. Furthermore, on the side facing away from the packing material wall 2 of the base body 11, a preferably round recess 32 is formed, which covers the two through holes 23, 24, and in which a filter element 34 is attached in the form of a nonwoven or the like.
  • the nonwoven fabric 34 serves to prevent food particles from entering and clogging the through holes 23, 24 when the particle size is smaller than the diameter of the through holes 23, 24.
  • a sealing agent in the form of a thin silicone oil layer 36 is applied in the region of the base region 15.
  • the silicone oil layer 36 serves as a sealing and connecting means between the main body 11 and a likewise preferably round trained valve membrane 40.
  • the diameter of the valve membrane 40 is slightly smaller than the inner diameter, which is bounded by the edge region 12 of the base body 11.
  • the valve membrane 40 is also made of plastic and is flexible to a certain extent due to the selected thickness.
  • a constriction 41 running around in the exemplary embodiment is integrally formed on the main body 11 on the inside of the edge region 12.
  • a circumferential constriction 41 are also Only partially arranged retaining fingers or the like conceivable.
  • the relief valve 10 so far described functions as follows:
  • the gas produced by the food during the laking process due to chemical conversion processes increases the package internal pressure until it eventually exceeds the atmospheric pressure surrounding the package.
  • this overpressure has reached, for example, a size of 5 mbar, this causes the valve membrane 40 to lift off initially in the region of the two tips 43, 44 of the constriction region 21 of the recess 20.
  • valve membrane 40 As soon as the overpressure has been reduced, the valve membrane 40, starting from its edge region, rests against the main body 11 again, wherein the silicone oil layer 36 finally causes a seal due to adhesion forces, which also prevents the entry of ambient air into the interior of the package.
  • the lifting or lifting of the valve membrane 40 is facilitated by the fact that in the central region 16, in which the recess 20 is located, the distance of the base region 15 to the valve membrane 40 due to the concave design of the base region 15 is relatively large such that the adhesion forces (due to the stiffness of the valve membrane 40) between the valve membrane 40 and the base body 11, relative to the outer region 17, are reduced. As a result, the lifting of the valve diaphragm 40 in the region of the tips 43, 44 is supported.
  • the pressure relief valve 10 described so far allows gas already at a relatively low (compared to the environment) Overpressure escapes from inside the package.
  • the overpressure valve 10 also seals off particularly well from the outside, since the atmospheric pressure acting on the valve membrane 40 via the perforations 5 additionally presses the valve membrane 40 onto the two elevations 25, 26 and thus closes the through-holes 23, 24. Furthermore, the circumferential depression 30 causes silicone oil to collect in this region or serves as a reservoir for silicone oil, which can thus be supplied to the valve membrane 40 again, so that a relatively uniform wetting of the valve membrane 40 on the base region 15 faces Side with the silicone oil.
  • second pressure relief valve 50 is on both sides of the recess 51 each have a tapered outwardly recess 52, 53 from. Outside the two depressions 52, 53, the base region 55 of the main body 56 is planar or flat. The fact that the two depressions 52, 53 emanate from the two tips 57, 58 of the also "8" -shaped recess 51, a particularly easy lifting of the valve diaphragm 59 is also made possible in the second pressure relief valve 50.
  • the recess 61 corresponding to the first pressure relief valve 10 is circular, but extends only to the edge of the recess 62 zoom.
  • overpressure valves 65 and 66 is in the region of the base region 67, 68 no recess or the like arranged, but is by injection molding, for example, two elongate webs 69 (FIG. FIG. 9 ) or a survey 70 ( FIG. 10 ) a greater distance between the base body 67, 68 and he the main body 67, 68 covering the valve membrane causes.
  • a greater distance between the base body 67, 68 and he the main body 67, 68 covering the valve membrane causes.
  • the survey 70 also reduces the adhesion forces between the body 67, 68 and the valve membrane to facilitate lifting the valve diaphragm, and thus a better response of the pressure relief valve 65, 66 at a positive pressure inside the package to effect.
  • the relief valves 10, 50, 60, 65 and 66 described so far can be modified or modified in many ways, without departing from the spirit of the invention. This consists, in particular, of facilitating the lifting of the valve membrane by increasing the distance between the valve membrane and the main body by means of a special design of the respective base region or of the overlap region with the valve membrane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Closures For Containers (AREA)
  • Safety Valves (AREA)
EP05786948A 2004-09-29 2005-09-08 Überdruckventil für einen verpackungsbehälter Active EP1802537B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004047810 2004-09-29
DE200410062026 DE102004062026A1 (de) 2004-09-29 2004-12-23 Überdruckventil für einen Verpackungsbehälter
PCT/EP2005/054464 WO2006034950A1 (de) 2004-09-29 2005-09-08 Überdruckventil für einen verpackungsbehälter

Publications (2)

Publication Number Publication Date
EP1802537A1 EP1802537A1 (de) 2007-07-04
EP1802537B1 true EP1802537B1 (de) 2008-05-14

Family

ID=35311610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05786948A Active EP1802537B1 (de) 2004-09-29 2005-09-08 Überdruckventil für einen verpackungsbehälter

Country Status (6)

Country Link
US (1) US7721752B2 (zh)
EP (1) EP1802537B1 (zh)
JP (1) JP4361953B2 (zh)
DE (2) DE102004062026A1 (zh)
TW (1) TW200621585A (zh)
WO (1) WO2006034950A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010091910A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil für einen verpackungsbehälter
WO2010091908A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil für einen verpackungsbehälter
WO2010091909A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil mit kleinen abmessungen

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8925579B2 (en) * 2006-03-02 2015-01-06 Pacific Bag, Inc. Pressure relief valve
US8382033B2 (en) * 2007-05-21 2013-02-26 Gary Thomas Reece Ballistic resistant and explosive containment systems for aircraft
US20090169693A1 (en) * 2007-12-27 2009-07-02 Hoffman Karl K Interior-mountable pressure relief valve
KR100996491B1 (ko) 2009-02-03 2010-11-24 주식회사 블리스팩 밀봉 포장대용 가스배출구
KR101044250B1 (ko) 2009-10-23 2011-06-28 주식회사 블리스팩 밀봉 포장대용 가스배출구
US20110284536A1 (en) * 2010-05-22 2011-11-24 William Walters One Way Degassing Valve
WO2012141356A1 (ko) * 2011-04-15 2012-10-18 주식회사 블리스팩 밀봉 포장대용 가스배출구
DE102014209076A1 (de) * 2014-05-14 2015-11-19 Airbus Operations Gmbh Feuerschutz-Rollwagen und Feuerschutzvorrichtung mit einem derartigen Feuerschutz-Rollwagen
TWI640707B (zh) * 2017-07-21 2018-11-11 陳家珍 排氣閥
DE102019200867A1 (de) * 2019-01-24 2020-07-30 Syntegon Technology Gmbh Vakuumfestes Überdruckventil für Verpackungsbehälter
DE102019200860A1 (de) * 2019-01-24 2020-07-30 Syntegon Technology Gmbh Überdruckventil mit schwimmender Membran
DE102019214315A1 (de) * 2019-09-19 2021-03-25 Syntegon Technology Gmbh Ventil für einen Verpackungsbehälter
DE102022115835B4 (de) 2022-06-24 2024-05-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Wasserablaufventil für eine Fahrzeugkarosserie

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US2638263A (en) * 1949-05-20 1953-05-12 Duo Vent Vacuum Closure Compan Flexible bag for vacuum sealing
IT989172B (it) * 1973-06-14 1975-05-20 Goglio Luigi Procedimento per il confeziona mento di prodotti in contenito ri e contenitore per l attuazio ne del procedimento
DE2537317A1 (de) * 1975-08-21 1977-02-24 Hesser Ag Maschf Druckausgleichventil fuer einen verpackungsbehaelter
US4134535A (en) * 1976-06-04 1979-01-16 Hag Aktiengesellschaft Pressure relief valve for packing containers
DE3125496C2 (de) * 1981-06-29 1983-12-29 Wipf AG Verpackungen, 8404 Volketswil Überdruckventil zur Entlüftung von Verpackungen
DE3526602A1 (de) * 1985-07-25 1987-01-29 Bosch Gmbh Robert Verfahren zum herstellen eines verpackungsbehaelters mit einem rberdruckventil
DE4129838A1 (de) 1991-02-16 1992-08-20 Bosch Gmbh Robert Ueberdruckventil fuer verpackungsbehaelter
IT1248238B (it) * 1991-06-18 1995-01-05 Ica Spa Valvola di sfiato.
SE9400366D0 (sv) * 1994-02-04 1994-02-04 Siemens Elema Ab Ventil för att styra ett gas- eller vätskeflöde
DE19510489A1 (de) * 1995-03-27 1996-10-02 Bosch Gmbh Robert Überdruckventil für einen Verpackungsbehälter
US5584409A (en) * 1995-09-18 1996-12-17 Chemberlen; Christopher H. One direction ventilation valves
US5992442A (en) 1997-05-29 1999-11-30 Urquhart; Edward F. Relief valve for use with hermetically sealed flexible container
DE10256245A1 (de) 2002-12-02 2004-06-09 Robert Bosch Gmbh Überdruckventil für einen Verpackungsbehälter
US7240796B2 (en) * 2003-10-16 2007-07-10 Ppi Technologies, Inc. Packaging release valve for refrigerated food items
AR046175A1 (es) * 2004-10-07 2005-11-30 Celomat S A Una valvula unidireccional liberadora de presion aplicable a un envase que contiene un producto que emite gases, en la que coexisten un medio fluido y una burbuja de aire, y un envase que incluye a dicha valvula
US7294354B2 (en) * 2004-10-29 2007-11-13 Sonoco Development, Inc. Container with gas release feature

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010091910A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil für einen verpackungsbehälter
WO2010091908A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil für einen verpackungsbehälter
DE102009000802A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil für einen Verpackungsbehälter
WO2010091909A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil mit kleinen abmessungen
DE102009000805A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil für einen Verpackungsbehälter
DE102009000806A1 (de) 2009-02-12 2010-08-19 Robert Bosch Gmbh Überdruckventil mit kleinen Abmessungen
CN102317175B (zh) * 2009-02-12 2014-06-25 罗伯特·博世有限公司 尺寸小的过压阀

Also Published As

Publication number Publication date
JP4361953B2 (ja) 2009-11-11
JP2008514518A (ja) 2008-05-08
US7721752B2 (en) 2010-05-25
EP1802537A1 (de) 2007-07-04
US20080011751A1 (en) 2008-01-17
TWI356796B (zh) 2012-01-21
DE502005004146D1 (zh) 2008-06-26
TW200621585A (en) 2006-07-01
DE102004062026A1 (de) 2006-03-30
WO2006034950A1 (de) 2006-04-06

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