EP0450171B1 - Procédé et dispositif d'étanchéification pour soupape de surpression de récipients d'emballage - Google Patents

Procédé et dispositif d'étanchéification pour soupape de surpression de récipients d'emballage Download PDF

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Publication number
EP0450171B1
EP0450171B1 EP90124358A EP90124358A EP0450171B1 EP 0450171 B1 EP0450171 B1 EP 0450171B1 EP 90124358 A EP90124358 A EP 90124358A EP 90124358 A EP90124358 A EP 90124358A EP 0450171 B1 EP0450171 B1 EP 0450171B1
Authority
EP
European Patent Office
Prior art keywords
valve
sealant
temperature
valves
process 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.)
Expired - Lifetime
Application number
EP90124358A
Other languages
German (de)
English (en)
Other versions
EP0450171A1 (fr
Inventor
Klaus Dr.-Ing. Domke
Fritz Gaukler
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 EP0450171A1 publication Critical patent/EP0450171A1/fr
Application granted granted Critical
Publication of EP0450171B1 publication Critical patent/EP0450171B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings

Definitions

  • the invention relates to a method for sealing a packaging container pressure relief valve according to the preamble of claim 1.
  • valves for example, in the event of a defect in the application device or when the sealant supply is used up not be equipped with sealant, so that their tightness does not meet the requirements.
  • Packaging containers provided with such unsealed valves do not provide the filling with the necessary protection, so that the filling loses quality or even spoils due to oxidation. So far it has not been possible to check whether a valve with sealing fluid is activated. Although it has already been proposed to visually determine the presence of sealant in a valve using a photocell, the results have not been satisfactory.
  • the inventive method with the characterizing features of claim 1 has the advantage that the presence of sealant in a packaging container pressure relief valve can be checked in a simple manner and with high security. In evaluating the test result, valves that are not equipped with sealant can then be excluded from use.
  • pressure relief valves 1 for packaging containers are sealed with a liquid sealant, for example silicone oil.
  • a liquid sealant for example silicone oil.
  • Valve channel 5 is adhesively bonded to the base plate 2.
  • the sealant is applied in the valve channel 5, for example according to EP-B-12 874, by application to an outer end at the edge of the valve 1 or to an inner end in the region of the hole 3 of the base plate in the form of a drop 6, from where it passes through Capillary action in channel 5.
  • valves 1 with sealant is preferably carried out before or after connecting a valve to a packaging container.
  • sealant to one end of the valve channel 5
  • valves 1 are delivered in a row adhering to a carrier strip 7, in this arrangement equipped with a sealant, then peeled off from the carrier strip 7 at a deflection edge 11 of the carrier strip 7 and transferred to a packaging container by means of a suction pad 12.
  • a sealant dispenser 20 is arranged, which has a downwardly directed nozzle 21 in the form of a hollow needle, which ends just above the carrier strip 7 in the region of an opening 8.
  • the nozzle 21 does not end centrally, but near the edge of the opening 8 of the carrier strip 7 or the hole 3 in the base plate 2 of a valve 1, so that a droplet of sealant 6 discharged from the nozzle 21 when deposited through the opening 8 and the hole 3 on the cover film 4 of a valve 1 comes into contact at least partially with the edge of the hole 3 of the base plate 2 which delimits one end of the valve channel 5.
  • a metering device 30 and a reservoir 31 for sealant are connected to the nozzle 21.
  • the metering device 30 consists of a flexible hose 32 connecting the reservoir 31, which is under a slight positive pressure, to the nozzle 21 and a hose 32 pressing the hose 32 against a fixed stop 33 Clamping jaws 34, which is pulled away from the stop 33 in cycles.
  • the clamping jaw 34 is briefly withdrawn, a small amount of sealant flows in the hose 32 to the nozzle 21, at the lower end of which it emerges as a drop 6 and is received by the valve 1 provided.
  • a monitoring device 40 is arranged on the station following the sealant dispensing device 20. This has a heat sensor 41, which responds to a temperature difference between a targeted location and its surroundings.
  • the monitoring device 40 like the pressure medium delivery device 20, is also arranged above the feed level of the carrier strip 7 and its heat sensor 41 is directed at the location of the carrier strip 7 or the valve 1, to which a sealant drop 6 has previously been deposited by the nozzle 21.
  • the sealant is delivered to the valves 1 at a temperature which is higher than the ambient temperature.
  • the metallic nozzle 21 is accommodated in a heat-conducting manner in a projection 23 of a radiator 22, in which a temperature-controlled electrical heating cartridge 24 is seated.
  • the heater 21 heats the nozzle 21 in such a way that the small amount of sealant therein is heated to a temperature in the range from 40 to 100 ° C., preferably 60 to 80 ° C. This arrangement ensures that in each case only a small amount of sealant is heated to a temperature which is higher than the ambient temperature and the supplied valves 1 and that the sealant is only heated shortly before it is introduced into a valve 1.
  • the monitoring device 40 detects a temperature difference in the valve 1 fed into its sensing range at a particular point in time, this means that sealant is present in the monitored valve 1 and that this valve 1 can be connected to a packaging container. If, on the other hand, the monitoring device 40 does not detect any temperature difference, it controls the transfer device with the stamp 12 in such a way that the valve 1 in question, when it has reached the area of the transfer device, is taken over by the stamp 12, but is not then attached to a packaging container, but instead is eliminated.
  • the monitoring device 40 which preferably consists of an infrared temperature difference measuring device, can, as shown in the exemplary embodiment, be arranged on the side of the valves on which the sealant is supplied, but it can also be arranged on the opposite side so that it does not immediately feel the applied sealant, but rather the thin cover film of the point at which the sealant has been applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
  • Packages (AREA)
  • Coating Apparatus (AREA)
  • Package Closures (AREA)

Claims (6)

  1. Procédé pour rendre étanche une soupape de surpression de récipients d'emballage avec un agent d'étanchéité liquide, qui est disposé entre les surfaces d'étanchéité des éléments de soupape, caractérisé
    - en ce que l'agent d'étanchéité liquide est introduit à une température augmentée par rapport à la température ambiante dans un emplacement déterminé de la soupape (1), et
    - en ce qu'à la suite de cela, la température de l'endroit réchauffé par rapport à la température ambiante est soumise à un contrôle.
  2. Procédé selon la revendication 1, caractérisé en ce que l'agent d'étanchéité est réchauffé juste avant son introduction dans la soupape (1).
  3. Procédé selon la revendication 2, caractérisé en ce que l'agent d'étanchéité est réchauffé à une température dans la plage de 40 à 100°C.
  4. Procédé selon une des revendications 1 à 3, caractérisé en ce que la température de la soupape (1) est contrôlée avec un capteur à infrarouge dirigé sur l'endroit d'application de l'agent d'étanchéité.
  5. Procédé selon une des revendication 1 à 4, caractérisé en ce que plusieurs soupapes (1) sont amenées en ligne par adhérence sur un ruban porteur (7), elles sont munies l'une après l'autre d'un agent d'étanchéité chauffé, elles sont contrôlées à une température augmentée et des soupapes, pour lesquelles une différence de température est établie, sont transférées sur des récipients d'emballage, par contre des soupapes, pour lesquelles aucune différence de température n'est décelée, sont rebutées.
  6. Dispositif pour réaliser le procédé selon une des revendications 1 à 3, avec un injecteur pour introduire respectivement une goutte d'un agent d'étanchéité liquide dans une soupape, caractérisé
    - en ce que l'injecteur (21) est relié par conductibilité thermique avec un corps chauffant (22) et,
    - en ce que un dispositif de contrôle de la température (40) dirigé sur la soupape (1) est mis en place, et ce dispositif contrôle l'augmentation de la température par rapport à la température ambiante.
EP90124358A 1990-03-14 1990-12-17 Procédé et dispositif d'étanchéification pour soupape de surpression de récipients d'emballage Expired - Lifetime EP0450171B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008097 1990-03-14
DE4008097A DE4008097A1 (de) 1990-03-14 1990-03-14 Verfahren und vorrichtung zum abdichten eines verpackungsbehaelter-ueberdruckventils

Publications (2)

Publication Number Publication Date
EP0450171A1 EP0450171A1 (fr) 1991-10-09
EP0450171B1 true EP0450171B1 (fr) 1993-10-27

Family

ID=6402156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124358A Expired - Lifetime EP0450171B1 (fr) 1990-03-14 1990-12-17 Procédé et dispositif d'étanchéification pour soupape de surpression de récipients d'emballage

Country Status (5)

Country Link
US (1) US5178023A (fr)
EP (1) EP0450171B1 (fr)
JP (1) JP3140071B2 (fr)
DE (2) DE4008097A1 (fr)
ES (1) ES2045737T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243020A1 (de) * 1992-12-18 1994-06-30 Bosch Gmbh Robert Überdruckventil für Verpackungsbehälter
DK77694A (da) * 1994-06-29 1995-12-30 Dansk Ind Syndikat Fremgangsmåde og indretning til ved udstøbning mod tyngdekraften af støbeforme, især vådsandforme, med navnlig letoxiderbare metaller eller metallegeringer af afslutte støbeprocessen
US20040173626A1 (en) * 2003-03-07 2004-09-09 Jeor Bret De St Pressure vacuum release hermetic valve for rigid container packages
DE102005018407A1 (de) * 2005-04-20 2006-10-26 Robert Bosch Gmbh Eigenständig arbeitendes Applikationsmodul, insbesondere für eine Verpackungsmaschine
DE102006016594A1 (de) * 2006-04-06 2007-10-18 Tesa Ag Überdruckventil für einen Verpackungsbehälter
US7328543B2 (en) * 2006-05-17 2008-02-12 Plitek, L.L.C. Apparatus and method for the application of pressure relief valves
US8522926B2 (en) * 2006-08-16 2013-09-03 Plitek, L.L.C. Apparatus and method for lubricating pressure relief valves
US9821528B2 (en) * 2006-08-16 2017-11-21 Plitek, L.L.C. Method for lubricating pressure relief valves
US20090026199A1 (en) * 2007-07-27 2009-01-29 Jeor Bret De Pressure vacuum release hermetic valve for rigid container packages
DE102009003022A1 (de) * 2009-05-12 2010-11-18 Robert Bosch Gmbh Vorrichtung zur Bevorratung, insbesondere von Silikon
DE102024207731A1 (de) 2024-08-14 2026-02-19 Tesa Se Überdruckventil für einen Verpackungsbehälter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE220516C (fr) *
US1933403A (en) * 1930-11-26 1933-10-31 Aro Equipment Corp Heating means for lubricant dispensers
GB1274449A (en) * 1969-10-08 1972-05-17 Gunsons Sortex Ltd Sorting apparatus and a method of sorting
US3968368A (en) * 1975-03-10 1976-07-06 Owens-Illinois, Inc. Inspection apparatus and method for hot glass containers
US4428223A (en) * 1978-05-16 1984-01-31 Furmanite International Limited Apparatus for periodically testing the operation of safety valves
DE2856021A1 (de) * 1978-12-23 1980-07-03 Bosch Gmbh Robert Verfahren zum abdichten eines verpackungsbehaelter-ventils
DE3202851A1 (de) * 1982-01-29 1983-08-11 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und vorrichtung zum abdichten eines verpackungsbehaelter-ventils
JPS5992333A (ja) * 1982-11-19 1984-05-28 Shinriyou Seikan Kk 缶蓋シ−リングコンパウンドの塗布自動化装置
US4873432A (en) * 1988-08-25 1989-10-10 American National Can Company Compound application detector

Also Published As

Publication number Publication date
DE59003254D1 (de) 1993-12-02
DE4008097A1 (de) 1991-09-19
US5178023A (en) 1993-01-12
JP3140071B2 (ja) 2001-03-05
ES2045737T3 (es) 1994-01-16
EP0450171A1 (fr) 1991-10-09
JPH04215928A (ja) 1992-08-06

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