EP0002155A1 - Venting valve for filling sacks with fluidised pulverulent products - Google Patents
Venting valve for filling sacks with fluidised pulverulent products Download PDFInfo
- Publication number
- EP0002155A1 EP0002155A1 EP78400177A EP78400177A EP0002155A1 EP 0002155 A1 EP0002155 A1 EP 0002155A1 EP 78400177 A EP78400177 A EP 78400177A EP 78400177 A EP78400177 A EP 78400177A EP 0002155 A1 EP0002155 A1 EP 0002155A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- valve
- wall
- sheet
- perforations
- 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.)
- Granted
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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
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- 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
- Y10T137/7891—Flap or reed
-
- 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
- Y10T137/794—With means for separating solid material from the fluid
- Y10T137/8122—Planar strainer normal to flow path
Definitions
- the present invention relates to a deaeration valve for bagging fluidized pulverulent products.
- the invention applies more particularly to deaeration valves described in French patent n ° 76.01.112 and intended to equip bags of the "open mouth” type and with an impermeable wall.
- this type of valve is formed of two superimposed plastic film elements made integral so as to provide between them a sealed intermediate space terminated by a channel, said valve being fixed outside the flexible wall of a package and put in communication with the interior thereof to allow the evacuation of air and facilitate the bagging of powdered products which are fluidized to facilitate their transport and their handling, that is to say suspended in air so as to have a mixture of apparent density much lower than that of the product alone.
- the problem therefore consists, at the time of bagging, in eliminating this air serving as a vehicle for the product in order to achieve optimum filling of the bags.
- the invention therefore essentially aims to provide a deaeration valve, in particular for open mouth bag and impermeable wall, which not only ensures filtration of the exhaust air but above all allows to quickly and completely deaerate the interior of said bag during its filling and prevents the formation of air pockets in the mass of the product.
- the deaeration valve for a bag in particular an open mouth bag intended to receive an atomized powdered product, said valve comprising two superimposed film elements made integral so as to form a pocket providing a sealed interior space ending in at least one suction channel, the external face of one of the elements being fixed to the external face of the wall of the bag along a closed contour which delimits an area comprising perforations through said element and the wall, these perforations being arranged opposite so as to make the inside of the bag communicate with the inside of the valve pocket, and a sheet or filter plate with porous texture being applied to the internal face of the wall is perforated from the bag in front of the perforations, / characterized in that the said filtering plate is a drainage plate which extends far beyond the perforated zone along of the wall of the bag and has a thickness and a large surface relative to the dimensions of the suction bag to promote the drainage of air towards it in the manner of a wick.
- the surface of the sheet is chosen to be close to that of the bag spread out flat and the material constituting said sheet is felt or a synthetic foam with an open structure.
- the invention therefore consists in adding to a pocket-shaped valve, intended for deaerating a bag filled with "open mouth", a sheet or drainage plate which extends far from the outlet perforations so as to drain in the manner wicks away air pockets.
- the drainage sheet must have a porous texture to allow the internal circulation of air, it is also used as a filter at the perforation level, but its main function is first to drain the distant air streams and collect them in the area with the suction holes.
- the porous-textured sheet applied according to the invention to the internal face of the perforated wall of the bag extends far beyond the area of the perforations, has a high thickness and performs two functions, namely a function which consists in going to catch the air nets far inside the bag, to drain them towards the perforations and to gather them on these and that to filter the air thus drained, said sheet then behaving as a network of multiple channels converging towards the suction zone where the perforations are located, the mouths of said channels constituting as many air intakes remote from the perforations and distributed over the entire extent of the bag.
- Fig. 1 represents a top view of the valve and of the bag placed flat
- fig. 2 shows a section along line II-II of FIG. 1.
- the flexible bag 1 for example made of plastic, comprises a valve 2 formed of two superimposed plastic film elements 3 and 4 (cf. fig. 2) made integral at the same time at one end and on the lateral edges so as to provide a sealed interior space 5 communicating with the outside via a suction channel 6, the element 3 adjacent to the external face 7 of a wall 8 of the bag 1 being welded to the latter by a cord 9 with a closed contour delimiting an area 10, in which are open coincidentally openings 11 both through the wall 8 of the bag 1 and through the element 3 of the valve, these openings 11 making the interior 12 of the bag 1 with the internal space 5 of the valve 2.
- a valve 2 formed of two superimposed plastic film elements 3 and 4 (cf. fig. 2) made integral at the same time at one end and on the lateral edges so as to provide a sealed interior space 5 communicating with the outside via a suction channel 6, the element 3 adjacent to the external face 7 of a wall 8 of the bag 1 being welded to the latter by a cord 9 with a closed contour
- a filter plate 14 centered substantially on the openings 11 formed through said wall 8 and the adjacent element 3 of the valve 2.
- This filter plate 14 is in the form of a thick sheet, for example of felt or synthetic foam with an open structure, the thickness E of which is sufficient to allow the passage of the air therein; the dimensions (H, L) of the filter sheet or plate are large compared to those (h, 1) of the valve 2 and the surface of the sheet can even reach that of the bag spread out flat.
- the air is sucked through the sensitive openings 11 lying in the middle of the filter plate 14, the texture and thickness of which allow the aspiration to be distributed over its entire surface oriented towards the inside of the bag.
- the air currents shown schematically by arrows in strong lines, pass through the sheet 14 on all sides, both in the thickness thereof, parallel to its large faces, and perpendicular to them to focus on the outlet openings 11.
- the sheet thus plays the role of a "wick” or a drain to multiply the suction effect and drain the air in a large volume, which is obtained from the fact that the air conveyed inside of the sheet can circulate according to the three dimensions thereof.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Basic Packing Technique (AREA)
Abstract
L'invention concerne une valve de désaération pour l'ensachage de produits pulvérulents fluidisés dans des sacs du type à gueule ouverte.The invention relates to a deaeration valve for bagging fluidized pulverulent products in bags of the open mouth type.
La valve 2 comporte une plaque filtrante 14 logée à l'intérieur 12 du sac 1 à remplir, cette plaque ayant une texture et une épaisseur E telles qu'elle multiplie l'effet d'aspiration à travers la valve et joue le rôle d'une «mèche» pour drainer l'air dans un volume important, les dimensions (H, L) de la plaque étant importantes vis-à-vis de celles (h, 1) de la valve de désaération 2 et sa surface pouvant atteindre celle du sac 1 étalé à plat.The valve 2 comprises a filter plate 14 housed inside the bag 1 to be filled, this plate having a texture and a thickness E such that it multiplies the suction effect through the valve and plays the role of a "wick" for draining the air in a large volume, the dimensions (H, L) of the plate being large with respect to those (h, 1) of the deaeration valve 2 and its surface can reach that of the bag 1 spread out flat.
Application à la désaération de sacs imperméables destinés à recevoir un produit pulvérulent micromisé.
Description
La présente invention concerne une valve de désaération pour l'ensachage de produits pulvérulents fluidisés.The present invention relates to a deaeration valve for bagging fluidized pulverulent products.
L'invention s'applique plus particulièrement aux valves de désaération décrites dans le brevet français n° 76.01.112 et destinées à équiper des sacs du type "à gueule ouverte" et à paroi imperméable.The invention applies more particularly to deaeration valves described in French patent n ° 76.01.112 and intended to equip bags of the "open mouth" type and with an impermeable wall.
Rappelons que ce type de valve est formé de deux éléments de film plastique superposés rendus solidaires de manière à ménager entre eux un espace intermédiaire étanche terminé par un canal, ladite valve étant fixée à l'extérieur de la paroi souple d'un emballage et mise en communication avec l'intérieur de celui-ci pour permettre l'évacuation de l'air et faciliter l'ensachage des produits pulvérulents qui sont fluidisés pour faciliter leur transport et leur manipulation, c'- est-à-dire mis en suspension dans de l'air de manière à avoir un mélange de densité apparente beaucoup plus faible que celle du produit seul. Le problème consiste donc, au moment de l'ensachage, à éliminer cet air servant de véhicule au produit pour réaliser un remplissage optimum des sacs.Recall that this type of valve is formed of two superimposed plastic film elements made integral so as to provide between them a sealed intermediate space terminated by a channel, said valve being fixed outside the flexible wall of a package and put in communication with the interior thereof to allow the evacuation of air and facilitate the bagging of powdered products which are fluidized to facilitate their transport and their handling, that is to say suspended in air so as to have a mixture of apparent density much lower than that of the product alone. The problem therefore consists, at the time of bagging, in eliminating this air serving as a vehicle for the product in order to achieve optimum filling of the bags.
En effet, dans un sac "à gueule ouverte", le remplissage s'effectue brutalement sous un fort débit à travers un orifice d'entrée (la"gueule" du sac) de grande dimension. Pour que ce remplissage s'effectue du mieux possible, sans trop de nuages de poussières, ni surpression dans le sac, il importe d'évacuer l'air situé dans celui-ci le plus rapidement possible pour qu'- il laisse sa place au produit. Pour ce faire, on prévoit une aspiration à travers une valve en forme de poche du type de celle décrite dans le brevet français précité.Indeed, in a "open mouth" bag, the filling is carried out suddenly under a high flow rate through a large inlet opening (the "mouth" of the bag). For this filling to take place as best as possible, without too many dust clouds, or overpressure in the bag, it is important to evacuate the air located in it as quickly as possible so that it leaves its place to the product. To do this, provision is made for suction through a pocket-shaped valve of the type described in the aforementioned French patent.
Or, notamment dans le cas de produits en poudre à grains fins, l'aspiration de l'air hors du sac au moment de l'ensachage conduit à aspirer également des grains de produit qui s'échappent par la valve à travers les perforations de la paroi de l'emballage.However, in particular in the case of fine-grained powdered products, the suction of air from the bag at the time of bagging also leads to suction of product grains which escape through the valve through the perforations of the wall of the packaging.
Pour éviter cet inconvénient, il a déjà été, proposé notamment dans le brevet français n° 76.17.104, d'interposer un filtre entre les deux éléments de film formant la valve, ce filtre recouvrant les perforations assurant la communication avec l'intérieur du sac. Cette méthode donne des résultats intéressants dans la mesure où les grains de produit ne sont pas trop fins car, avec une poudre micromisée, il se forme un bloc de matière autour du filtre qui devient rapidement imperméable à l'air avant la fin de l'ensachage.To avoid this drawback, it has already been proposed, in particular in French patent n ° 76.17.104, to interpose a filter between the two film elements forming the valve, this filter covering the perforations ensuring communication with the interior of the bag. This method gives interesting results insofar as the grains of product are not too fine because, with a micromized powder, a block of material is formed around the filter which quickly becomes impermeable to air before the end of the bagging.
Un moyen pour retarder au maximum l'instant où le filtre est complètement obturé, rendant ainsi impossible l'évacuation de l'air, consiste à surdimensionner le filtre, mais on surdimensionne la valve par la même occasion, et très vite on se trouve nécessairement limité.One way of delaying the instant when the filter is completely blocked, making air evacuation impossible, is to oversize the filter, but the valve is oversized at the same time, and very quickly you are necessarily limit.
Un autre facteur intervenant dans le sens d'un ralentissement du remplissage du sac provient de ce que la section de sortie offerte par les perforations de cette valve n'a rien de comparable avec la section d'entrée de la gueule du sac; une aspiration à travers lesdites perforations s'avère donc vite insuffisante du fait qu'elle ne s'exerce qu'en une zone très localisée de la paroi, par exemple à mi-hauteur ou au bas du sac, que cette zone n'a qu'une surface relativement réduite et que, de plus, il est nécessaire de filtrer l'air sortant par les perforations pour éviter la fuite du produit pulvérulent, ce qui accroit encore les pertes de charge à la sortie. En conséquence, l'aspiration des couches d'air éloignées des perforations se fait très mal et, dans certains cas, pas du tout.Another factor intervening in the direction of a slowing down of the filling of the bag comes from the fact that the outlet section offered by the perforations of this valve has nothing comparable with the inlet section of the mouth of the bag; aspiration through said perforations therefore quickly proves to be insufficient because it is exerted only in a very localized area of the wall, for example at mid-height or at the bottom of the bag, that this area has that a relatively small area and that, in addition, it is necessary to filter the outgoing air through the perforations to avoid the leakage of the pulverulent product, which further increases the pressure drops at the outlet. As a result, the suction of the air layers distant from the perforations is very poor and, in some cases, not at all.
Il importe donc non seulement de filtrer et d'- aspirer l'air à travers une zone localisée de la paroi mais encore d'aller chercher cet air dans toute l'étendue du sac pour éviter la formation de poches d'air en certains endroits et vider le plus rapidement possible l'espace intérieur du sac de tout son air.It is therefore important not only to filter and draw the air through a localized area of the wall but also to collect this air throughout the extent of the bag to avoid the formation of air pockets in certain places. and empty the interior space of the bag as quickly as possible.
L'invention a donc essentiellement pour but de proposer une valve de désaération, notamment pour sac à gueule ouverte et paroi imperméable, qui non seulement assure un filtrage de l'air évacué mais surtout permette de désaérer rapidement et complètement l'intérieur dudit sac pendant son remplissage et évite la formation de poches d'air dans la masse du produit.The invention therefore essentially aims to provide a deaeration valve, in particular for open mouth bag and impermeable wall, which not only ensures filtration of the exhaust air but above all allows to quickly and completely deaerate the interior of said bag during its filling and prevents the formation of air pockets in the mass of the product.
Selon l'invention, la valve de désaération pour sac notamment à gueule ouverte destiné à recevoir un produit pulvérulent atomisé, ladite valve comprenant deux éléments de film superposés rendus solidaires de façon à former une poche ménageant un espace intérieur étanche se terminant par au moins un canal d'aspiration, la face extérieure de l'un des éléments étant fixée sur la face externe de la paroi du sac le long d'un contour fermé qui délimite une zone comportant des perforations à travers ledit élément et la paroi, ces perforations étant ménagées en vis-à-vis de manière à faire communiquer l'intérieur du sac avec l'intérieur de la poche de la valve, et une feuille ou plaque filtrante à texture poreuse étant appliquée sur la face interne de la paroi est perforée du sac devant les perforations,/caractérisée en ce que ladite plaque filtrante est une plaque de drainage qui s'étend très au-delà de la zone perforée le long de la paroi du sac et possède une épaisseur et une surface importantes par rapport aux dimensions de la poche d'aspiration pour favoriser le drainage de l'air vers celle-ci à la manière d'une mèche.According to the invention, the deaeration valve for a bag, in particular an open mouth bag intended to receive an atomized powdered product, said valve comprising two superimposed film elements made integral so as to form a pocket providing a sealed interior space ending in at least one suction channel, the external face of one of the elements being fixed to the external face of the wall of the bag along a closed contour which delimits an area comprising perforations through said element and the wall, these perforations being arranged opposite so as to make the inside of the bag communicate with the inside of the valve pocket, and a sheet or filter plate with porous texture being applied to the internal face of the wall is perforated from the bag in front of the perforations, / characterized in that the said filtering plate is a drainage plate which extends far beyond the perforated zone along of the wall of the bag and has a thickness and a large surface relative to the dimensions of the suction bag to promote the drainage of air towards it in the manner of a wick.
Préférentiellement, la surface de la feuille est choisie voisine de celle du sac étalé à plat et le matériau constituant ladite feuille est du feutre ou une mousse synthétique à structure ouverte.Preferably, the surface of the sheet is chosen to be close to that of the bag spread out flat and the material constituting said sheet is felt or a synthetic foam with an open structure.
L'invention consiste donc à adjoindre à une valve en forme de poche, prévue pour désaérer un sac à remplissage par "gueule ouverte", une feuille ou plaque de drainage qui s'étende loin des perforations de sortie de manière à drainer à la manière d'une mèche les poches d'air éloignées.The invention therefore consists in adding to a pocket-shaped valve, intended for deaerating a bag filled with "open mouth", a sheet or drainage plate which extends far from the outlet perforations so as to drain in the manner wicks away air pockets.
Du fait que pour permettre la circulation interne de l'air la feuille de drainage doit avoir une texture poreuse, elle est aussi utilisée comme filtre au niveau des perforations mais sa fonction principale est d'abord de drainer les filets d'air éloignés et de les rassembler dans la zone comportant les trous d'aspiration.Because the drainage sheet must have a porous texture to allow the internal circulation of air, it is also used as a filter at the perforation level, but its main function is first to drain the distant air streams and collect them in the area with the suction holes.
En d'autres termes, la feuille à texture poreuse appliquée selon l'invention sur la face interne de la paroi perforée du sac s'étend largement au-delà de la zone des perforations, possède une forte épaisseur et assure deux fonctions,à savoir une fonction qui consiste à aller capter les filets d'air loin à l'intérieur du sac, de les drainer vers les perforations et de les rassembler sur celles-ci et celle de filtrer l'air ainsi drainé, ladite feuille se comportant alors comme un réseau de canaux multiples convergeant vers la zone d'aspiration où se trouvent les perforations, les embouchures desdits canaux constituant autant de prises d'air éloignées des perforations et réparties sur toute l'étendue du sac.In other words, the porous-textured sheet applied according to the invention to the internal face of the perforated wall of the bag extends far beyond the area of the perforations, has a high thickness and performs two functions, namely a function which consists in going to catch the air nets far inside the bag, to drain them towards the perforations and to gather them on these and that to filter the air thus drained, said sheet then behaving as a network of multiple channels converging towards the suction zone where the perforations are located, the mouths of said channels constituting as many air intakes remote from the perforations and distributed over the entire extent of the bag.
L'invention va maintenant être décrite plus en en détail en se référant à un mode de réalisation particulier donné à titre d'exemple non limitatif et représenté par les dessins annexés.The invention will now be described in more detail. in detail with reference to a particular embodiment given by way of nonlimiting example and represented by the accompanying drawings.
La fig. 1 représente une vue de dessus de la valve et du sac disposé à plat,Fig. 1 represents a top view of the valve and of the bag placed flat,
fig. 2 représente une coupe selon la ligne II-II de la fig. 1.fig. 2 shows a section along line II-II of FIG. 1.
Tel que représenté sur les fig. 1 et 2, le sac souple 1, par exemple en matière plastique, comporte une valve 2 formée de deux éléments de film plastique superposés 3 et 4 (cf. fig. 2) rendus solidaires à la fois à une extrémité et sur les bords latéraux de manière à ménager un espace intérieur étanche 5 communiquant avec l'extérieur par un canal d'aspiration 6, l'élément 3 adjacent à la face externe 7 d'une paroi 8 du sac 1 étant soudé à celle-ci par un cordon 9 à contour fermé délimitant une zone 10, dans laquelle sont ménagées en coinci- dence deeuvertures 11 à la fois à travers la paroi 8 du sac 1 et à travers l'élément 3 de la valve, ces ouvertures 11 faisant communiquer l'intérieur 12 du sac 1 avec l'espace interne 5 de la valve 2.As shown in fig. 1 and 2, the flexible bag 1, for example made of plastic, comprises a
Contre la face interne 13 de la paroi 8 du sac 1 est plaquée et fixée une plaque filtrante 14 centrée sensiblement sur les ouvertures 11 ménagées à travers ladite paroi 8 et l'élément adjacent 3 de la valve 2.Against the
Cette plaque filtrante 14 se présente sous la forme d'une feuille épaisse, par exemple de feutre ou de mousse synthétique à structure ouverte, dont l'épaisseur E est suffisante pour permettre le cheminement de l'air dans celle-ci; les dimensions (H, L) de la feuille ou plaque filtrante sont grandes comparativement à celles (h, 1) de la valve 2 et la surface de la feuille peut même atteindre celle du sac étalé à plat.This
De cette façon, lors de l'aspiration de l'air hors du sac 1 par le canal de sortie 6 de la valve 2, l'air est aspiré à travers les ouvertures 11 sensiblement au milieu de la plaque filtrante 14 dont la texture et l'épaisseur permettent de répartir l'aspiration sur la totalité de sa surface orientée vers l'intérieur du sac. Les courants d'air,schématisés par des flèches en traits forts,cheminent à travers la feuille 14 de tous côtés, aussi bien dans l'épaisseur de celle-ci, parallèlement à ses grandes faces, que perpendiculairement à celles-ci pour se concentrer sur les ouvertures 11 de sortie. La feuille joue ainsi le rôle d'une "mèche" ou d'un drain pour multiplier l'effet d'aspiration et drainer l'air dans un volume important, ce qui est obtenu du fait que l'air véhiculé à l'intérieur de la feuille peut circuler selon les trois dimensions de celle-ci.In this way, during the suction of the air from the bag 1 through the
Grâce à la surface importante de filtration qu'il est ainsi possible d'obtenir en logeant la plaque filtrante non plus dans la valve, mais directement dans le sac, on peut facilement désaérer totalement le produit et l'intérieur du sac pendant toute la durée de l'- ensachage sans craindre en engorgement total qui interromprait l'opération.Thanks to the large filtration surface which it is thus possible to obtain by housing the filter plate no longer in the valve, but directly in the bag, it is easy to totally deaerate the product and the interior of the bag throughout the duration bagging without fear of total waterlogging which would interrupt the operation.
Bien entendu, la portée de l'invention n'est pas limitée au seul mode de réalisation décrit ci-dessus à titre d'exemple non limitatif, mais elle couvre également toutes les variantes qui ne différeraient que par des détails.Of course, the scope of the invention is not limited to the single embodiment described above by way of nonlimiting example, but it also covers all the variants which would differ only in details.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7734659A FR2409205A2 (en) | 1977-11-17 | 1977-11-17 | DEAERATION VALVE FOR BAGGING PULVERULENT PRODUCTS |
| FR7734659 | 1977-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0002155A1 true EP0002155A1 (en) | 1979-05-30 |
| EP0002155B1 EP0002155B1 (en) | 1982-07-14 |
Family
ID=9197752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP78400177A Expired EP0002155B1 (en) | 1977-11-17 | 1978-11-13 | Venting valve for filling sacks with fluidised pulverulent products |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4215725A (en) |
| EP (1) | EP0002155B1 (en) |
| JP (1) | JPS5520180A (en) |
| BE (1) | BE871856A (en) |
| BR (1) | BR7807525A (en) |
| CA (1) | CA1111388A (en) |
| DE (2) | DE7833575U1 (en) |
| DK (1) | DK509378A (en) |
| ES (1) | ES475136A1 (en) |
| FI (1) | FI63907C (en) |
| FR (1) | FR2409205A2 (en) |
| GB (1) | GB2008068B (en) |
| IE (1) | IE47667B1 (en) |
| IT (1) | IT1108385B (en) |
| LU (1) | LU80529A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729901A1 (en) * | 1995-03-23 | 1996-09-04 | The Procter & Gamble Company | Package or cap having a venting system with draining means |
| EP0752376A1 (en) * | 1995-07-05 | 1997-01-08 | The Procter & Gamble Company | Container or cap with venting means |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228130A (en) * | 1986-03-29 | 1987-10-07 | Shimadzu Corp | Method for processing load-extension data |
| JPS6332146U (en) * | 1986-08-12 | 1988-03-02 | ||
| JPS6332147U (en) * | 1986-08-12 | 1988-03-02 | ||
| JPS63111480U (en) * | 1987-01-13 | 1988-07-18 | ||
| JPH0194254U (en) * | 1987-11-02 | 1989-06-21 | ||
| JP2773192B2 (en) * | 1989-03-02 | 1998-07-09 | 藤森工業株式会社 | Method of manufacturing degassing packaging bags |
| JP2741723B2 (en) * | 1991-03-29 | 1998-04-22 | 株式会社島津製作所 | Material testing machine load measuring device |
| US5265653A (en) * | 1992-11-16 | 1993-11-30 | Herlth August H | Portable pneumatic liquid transfer assembly |
| DE19843430A1 (en) * | 1998-09-22 | 2000-03-23 | Wipf Ag Volketswil | Bag for powder, has bag wall that is impermeable to dust and valve that allows gas to escape |
| US6070728A (en) * | 1999-02-02 | 2000-06-06 | Fres-Co System Usa, Inc. | Filter bag with valve |
| EP1091163A1 (en) * | 1999-10-06 | 2001-04-11 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Device for receiving and holding impurities in a fluid in a carter of a machine |
| CN100429070C (en) | 2001-02-21 | 2008-10-29 | 蒂利亚国际公司 | Method for preparing air channel-equipped film for use in vacuum package |
| 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 |
| US20050034806A1 (en) | 2003-03-05 | 2005-02-17 | Tilia International, Inc. | Method for manufacturing liquid-trapping bag 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 |
| US7517484B2 (en) | 2003-03-24 | 2009-04-14 | Sunbeam Products, Inc. | Forming evacuation channels during single and multi-layer extrusion process |
| US7220053B2 (en) | 2003-12-16 | 2007-05-22 | Sunbeam Products, Inc. | Flexible composite bag for vacuum sealing |
| US7726880B2 (en) * | 2004-06-29 | 2010-06-01 | The Glad Products Company | Flexible storage bag |
| US7534039B2 (en) | 2004-07-22 | 2009-05-19 | Sunbeam Products, Inc. | Vacuum packaging films patterned with protruding cavernous structures |
| US7798713B2 (en) * | 2004-08-27 | 2010-09-21 | Pactiv Corporation | Polymeric bags with pressure relief valves |
| DE102006012302A1 (en) | 2006-03-15 | 2007-09-27 | Seaquist Perfect Dispensing Gmbh | dispenser |
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| US7874731B2 (en) | 2007-06-15 | 2011-01-25 | S.C. Johnson Home Storage, Inc. | Valve for a recloseable container |
| US7946766B2 (en) | 2007-06-15 | 2011-05-24 | S.C. Johnson & Son, Inc. | Offset closure mechanism for a reclosable pouch |
| US7967509B2 (en) | 2007-06-15 | 2011-06-28 | S.C. Johnson & Son, Inc. | Pouch with a valve |
| US7857515B2 (en) | 2007-06-15 | 2010-12-28 | S.C. Johnson Home Storage, Inc. | Airtight closure mechanism for a reclosable pouch |
| DE102007051982A1 (en) * | 2007-08-29 | 2009-03-05 | Seaquist Perfect Dispensing Gmbh | dispenser |
| DE102007051980A1 (en) * | 2007-08-29 | 2009-03-05 | Seaquist Perfect Dispensing Gmbh | dispenser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1063082B (en) * | 1957-06-04 | 1959-08-06 | Bielefelder Sackfabrik G M B H | Valve sack made of fabric, paper or the like with ventilation openings with inner cover |
| NL6904549A (en) * | 1969-03-25 | 1970-09-29 | Plastic sack with air vents |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US773876A (en) * | 1903-06-23 | 1904-11-01 | Automatic Weighing Machine Company | Method of compacting finely-divided materials. |
| US1977139A (en) * | 1933-09-12 | 1934-10-16 | O'brien Nathan | Sack for vacuum cleaners |
| US2821338A (en) * | 1954-10-21 | 1958-01-28 | Melvin R Metzger | Valve-equipped container |
-
1977
- 1977-11-17 FR FR7734659A patent/FR2409205A2/en active Granted
-
1978
- 1978-11-08 BE BE191609A patent/BE871856A/en not_active IP Right Cessation
- 1978-11-11 DE DE7833575U patent/DE7833575U1/en not_active Expired
- 1978-11-13 DE DE7878400177T patent/DE2861953D1/en not_active Expired
- 1978-11-13 US US05/960,102 patent/US4215725A/en not_active Expired - Lifetime
- 1978-11-13 EP EP78400177A patent/EP0002155B1/en not_active Expired
- 1978-11-14 FI FI783471A patent/FI63907C/en not_active IP Right Cessation
- 1978-11-14 GB GB784440A patent/GB2008068B/en not_active Expired
- 1978-11-14 IT IT69591/78A patent/IT1108385B/en active
- 1978-11-15 LU LU80529A patent/LU80529A1/en unknown
- 1978-11-15 IE IE2259/78A patent/IE47667B1/en unknown
- 1978-11-16 BR BR7807525A patent/BR7807525A/en unknown
- 1978-11-16 JP JP14211878A patent/JPS5520180A/en active Pending
- 1978-11-16 DK DK509378A patent/DK509378A/en not_active Application Discontinuation
- 1978-11-16 ES ES475136A patent/ES475136A1/en not_active Expired
- 1978-11-16 CA CA316,345A patent/CA1111388A/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1063082B (en) * | 1957-06-04 | 1959-08-06 | Bielefelder Sackfabrik G M B H | Valve sack made of fabric, paper or the like with ventilation openings with inner cover |
| NL6904549A (en) * | 1969-03-25 | 1970-09-29 | Plastic sack with air vents |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729901A1 (en) * | 1995-03-23 | 1996-09-04 | The Procter & Gamble Company | Package or cap having a venting system with draining means |
| EP0752376A1 (en) * | 1995-07-05 | 1997-01-08 | The Procter & Gamble Company | Container or cap with venting means |
Also Published As
| Publication number | Publication date |
|---|---|
| FI63907C (en) | 1983-09-12 |
| IE782259L (en) | 1979-05-17 |
| FR2409205B2 (en) | 1981-02-27 |
| DE2861953D1 (en) | 1982-09-02 |
| IE47667B1 (en) | 1984-05-16 |
| GB2008068B (en) | 1982-04-21 |
| IT7869591A0 (en) | 1978-11-14 |
| LU80529A1 (en) | 1980-06-05 |
| US4215725A (en) | 1980-08-05 |
| ES475136A1 (en) | 1979-04-01 |
| BR7807525A (en) | 1979-07-24 |
| FR2409205A2 (en) | 1979-06-15 |
| BE871856A (en) | 1979-05-08 |
| EP0002155B1 (en) | 1982-07-14 |
| FI63907B (en) | 1983-05-31 |
| JPS5520180A (en) | 1980-02-13 |
| FI783471A (en) | 1979-05-18 |
| DK509378A (en) | 1979-05-18 |
| GB2008068A (en) | 1979-05-31 |
| DE7833575U1 (en) | 1979-02-15 |
| CA1111388A (en) | 1981-10-27 |
| IT1108385B (en) | 1985-12-09 |
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