EP0816247B1 - Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält - Google Patents
Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält Download PDFInfo
- Publication number
- EP0816247B1 EP0816247B1 EP19960870083 EP96870083A EP0816247B1 EP 0816247 B1 EP0816247 B1 EP 0816247B1 EP 19960870083 EP19960870083 EP 19960870083 EP 96870083 A EP96870083 A EP 96870083A EP 0816247 B1 EP0816247 B1 EP 0816247B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- membrane
- liquid product
- venting
- particulate solids
- 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
Links
- 238000013022 venting Methods 0.000 title claims description 67
- 239000012263 liquid product Substances 0.000 title claims description 59
- 239000007787 solid Substances 0.000 title claims description 40
- 239000012528 membrane Substances 0.000 claims description 89
- 239000007789 gas Substances 0.000 claims description 25
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical compound [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000000047 product Substances 0.000 description 25
- 239000000463 material Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 14
- -1 polyethylene Polymers 0.000 description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 description 7
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 238000007790 scraping Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229960001922 sodium perborate Drugs 0.000 description 3
- 229940045872 sodium percarbonate Drugs 0.000 description 3
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000004775 Tyvek Substances 0.000 description 2
- 229920000690 Tyvek Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012611 container material Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- RQRTXGHHWPFDNG-UHFFFAOYSA-N 1-butoxy-1-propoxypropan-1-ol Chemical compound CCCCOC(O)(CC)OCCC RQRTXGHHWPFDNG-UHFFFAOYSA-N 0.000 description 1
- MOMFXATYAINJML-UHFFFAOYSA-N 2-Acetylthiazole Chemical group CC(=O)C1=NC=CS1 MOMFXATYAINJML-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229960001484 edetic acid Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Polymers NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000001069 triethyl citrate Substances 0.000 description 1
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 description 1
- 235000013769 triethyl citrate Nutrition 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
-
- 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
Definitions
- the present invention relates to a container, which comprises a venting means.
- the content of the container may, for example, be chemically unstable or may be subject to reaction with gases which may exist in the head space of the container, or alternatively, in certain specific circumstances, may react with the container material itself. Any chemical reactions involving the liquid contents may lead to either production of gases, and hence to over-pressure in the container, or to the absorption of any head space gases thereby causing under-pressure in the container.
- Pressure differences between the pressure inside the container and the ambient atmospheric pressure may also occur when the temperature during the filling and sealing of the container is significantly different from external temperature during shipment, transportation and storage. Another possibility of a pressure difference may be caused by a different ambient pressure at the filling of the container from another ambient pressure at a different geographical location.
- FR-A-2 259 026, US-4 136 796 and DE-A-2 509 258 disclose self-venting closures comprising a gas-permeable membrane covering an orifice to the exterior.
- the membranes are made of a material which is impermeable to liquids, but permeable to gases. Therefore, containers may comprise apertures to release gas to the exterior without losing their leak-tightness.
- EP-A-593 840 discloses containers for containing liquids which generate pressure, the container being made of a thermoplastic material comprising a network of micro-channels. This network of micro-channels is permeable to gases, but not to liquids.
- WO 94/26614 discloses a container containing a detergent or bleaching composition and provided with a venting membrane.
- the membranes may lose at least part of their gas-permeability. Specifically, liquid products comprising particulate solids such as carbonate and/or percarbonate and/or perborate suspended in the liquid product may not completely drain away from the membrane back into the container. Instead it has been found that the pores of the membrane are clogged by these particulate solids sedimented out of the liquid. In this manner, it may happen that the container loses venting capacity. This loss of venting capacity results in a pressure difference between the exterior and the inside of the container which may deform the container.
- particulate solids such as carbonate and/or percarbonate and/or perborate suspended in the liquid product may not completely drain away from the membrane back into the container. Instead it has been found that the pores of the membrane are clogged by these particulate solids sedimented out of the liquid. In this manner, it may happen that the container loses venting capacity. This loss of venting capacity results in a pressure difference between the exterior and the inside of the container which may deform the container.
- the contact between the product and the membrane may be caused by splashes of the product onto the membrane as the filled container is agitated during shipment and transportation of the container. It has been found that the amount of splashes normally occurring during shipment and transportation are sufficient to completely interrupt the venting capacity of the container. Another means by which product may contact with the membrane is during an upside down storage of the container. It has been further found that other venting systems, like valves for example, may also suffer from a similar disadvantage.
- an important parameter which influences the venting capacity of the membrane is that the product which has contacted the membrane may sediment out some particulate solids suspended in the product. It is therefore an object of the present invention to provide a container containing a liquid product, the liquid product comprising particulate solids, the container allowing venting of the product by venting means, whereby the sedimentation of the particulate solids from the liquid product onto the venting means is substantially reduced.
- the present invention provides a container containing a liquid product.
- the container enables the venting of the liquid product by a venting means.
- the venting means allows the passage of gases between the interior and the exterior of the container when the pressure inside the container differs from the ambient pressure.
- the venting means is permeable to gases, but impermeable to the liquid product.
- the liquid product comprises particulate solids selected from the group consisting of carbonate, percarbonate, perborate and mixtures thereof. The size of the particulate solids is not greater than 400 ⁇ m.
- Figures 1a, 1b and 1c illustrate cross sectional side views of different embodiments of containers (partially shown) according to the present invention comprising a venting means.
- Figures 2a to 2c show the sequence of the bubble point test method to measure the venting capacity of a venting means contacted with a liquid product according to the present invention.
- Figures 1a to 1c refer to a portion of a container.
- container it is herein understood to encompass any hollow body able to contain liquid products and any other parts of a container when the container is closed.
- Such other parts may be a closure, e.g. a cap or a lid, which is releasably engageable with the container and which allows the closing and the opening of the container.
- the closure is preferably engaged in a leak tight manner with the container.
- the closure may be of the screw-on/in or snap-on/in type. Further flip-top, push-pull or turret cap closures may be possible closures of the container.
- Figure 1a shows a cross sectional side view of a container, wherein the container (10) (only partially shown) comprises a hollow body (11).
- the hollow body comprises a side wall (18) and a bottom wall (not shown in Figure 1a).
- the container further comprises a top wall (17) when the container is closed.
- the hollow body is able to contain any liquid products.
- the hollow body is flexible to an extent that it may deform in response to pressure differences arising between the inside of the container and the ambient pressure.
- Pouches made of thin plastic material, for example, are also encompassed by the present invention.
- suitable shapes of the container may include essentially cylindrical, tapered cylindrical, oval, square, rectangular or flat-oval.
- the container (10) comprises a spout.
- the container is made of plastic, metal, paper, or combinations of these materials as layers, laminates or co-extrudates. The materials may be also recycled.
- the container (10) comprises a venting means (20).
- the venting means is able to equalize the pressure inside the container to the external atmospheric pressure. Consequently, the venting means is able to avoid over-pressure as well as under-pressure inside the container. Indeed, the venting means allows the escape of gases released from the contained product from the inside to the outside of the container, or vice versa.
- the venting means is located in the upper portion of the container above the level of the contained product, when the container is in its upright position. Indeed, the gases causing the over-pressure or under-pressure accumulate in the upper region of the container. Therefore, the passage of gases to the exterior or interior is facilitated.
- the venting means comprises at least an orifice (21) and a membrane (22).
- the orifice connects the interior of the container with the exterior.
- the orifice (21) allows the passage of gases from the interior to the exterior of the container, or vice versa, such that pressure inside the container is either maintained identical to the external atmospheric pressure or at a pressure at least below the pressure at which significant bottle deformation occurs.
- the orifice may be located on the top wall or the side wall.
- the orifice is part of a separate part of the hollow body (11) of the container, whereby the part can be attached or engaged onto the hollow body, such as a closure.
- the dimension of the orifice should be suitable for the passage of gases.
- the membrane (22) covers the orifice and is located between the content of the hollow body (11) and the orifice (21) in the interior or exterior of the hollow body (11).
- the membrane is substantially impermeable to liquids, but permeable to gases. Therefore, the membrane is able to provide a substantially liquid impermeable barrier, while allowing gas venting.
- the membrane may be substantially liquid impermeable up to pressure differences of 5 10 5 Pa (500 mbar) between the inside and the outside of the hollow body, preferably up to pressure differences of 10 6 Pa (1 bar).
- the membrane may be a planar surface, at least when viewed macroscopically.
- the membrane may also comprise a network of microchannels which is permeable to gases, but substantially not to liquids, as described in EP-A-593 840.
- the membrane may be corrugated macroscopically, like a zigzagged surface, in which case the membrane is defined by several planes of different inclination with respect to the horizontal direction, connected to each other.
- the membrane (22) is any material capable of being formed into a thin layer which may be used to cover the orifice (21).
- the membrane must be permeable to gas flow, also in response to small pressure differences.
- the membrane should allow gas flow with pressure differences as low as 5 ⁇ 10 4 Pa (50 mbar), more preferably as low as 5 ⁇ 10 3 Pa (5 mbar).
- the thickness of the membrane is a matter of choice, but preferably would be in the region of 0.2 mm to 2 mm.
- the membrane can comprise essentially any material which may be formed into thin layers such as plastics, paper or metal having micropores. Preferred materials for the membrane include microporous plastic films.
- the size of the micropores of the membrane should be such so as to allow the passage of gases at low pressure differences and at the same time to provide a high level of liquid impermeability.
- the micropores will be in the range of 0.1 ⁇ m to 5 ⁇ m, more preferably between 0.2 ⁇ m to 1 ⁇ m.
- the membrane has a rounded shape. But other shapes, such as rectangular, triangular or else, may be also foreseen to adapt it in a container or cap and/or improve the aesthetics of the container or cap itself.
- Preferred microporous plastic films for this application are:
- the microporous film material of the membrane (22) may be treated to reduce its surface energy and therefore to improve the impermeability to liquids of the film material.
- the lowering of the surface energy of the film material is particularly necessary to improve its impermeability when the container (10) contains products comprising surfactant components.
- the specific surface energy of the film material should be lower than that of the surfactant-containing product to achieve a substantially complete impermeability to the product contents.
- the membrane (22) has at least one surface directed towards the liquid product inside the container which is more hydrophobic than the liquid product.
- Fluorocarbon treatment which involves fixation of a fluorocarbon material, on a micro scale, to the surface of the film material is a specific example of a treatment which provides such reduced surface energy.
- the fluorination treatment reduces the susceptibility of the microporous film material of the membrane to wetting by the liquid product contents.
- a possible fluorocarbon material for use in the fluorocarbon treatment according to the present invention is sold under the trade name SCOTCHBAN, by the 3M Company.
- this fluorocarbon treatment should not compromise the gas permeability of the membrane.
- the membrane (22) may be applied and located inside or outside the hollow body (11) between the content and the orifice (21) in any way that maintains its liquid-impermeability and gas-permeability according to the present invention.
- the means of application may therefore include the use of adhesives, or heat-sealing of the membrane onto the area around the orifice or mechanical means such as clamping or hot-stamping, or insertion of the membrane during moulding of the container.
- the application means employed should not significantly compromise the venting ability of the membrane. For this reason, it is preferred that any adhesive used is also permeable to gases, or does not fill up the pores of the membrane.
- the membrane (22) may be also fitted in a housing.
- Housings whose dimensions are particularly compatible for use in a container or a cap according to the present invention are commercially available from GVS, Via Roma 50, 40069, Zola Predosa (BO), Italy.
- the manufacture of the housing and the fitting of the membrane (22) in the housing can be achieved by an "insert moulding operation", where:
- Housings may also be manufactured by heat sealing, ultrasonic sealing or gluing the membrane (22) into the housing. Furthermore, housings may be manufactured by mechanically holding the membrane between two separate pieces whereby the pieces are clipped together.
- the liquid product according to the present invention has solid suspending properties.
- the liquid product may be aqueous or non-aqueous.
- the amount of water should not exceed about 5% by weight of the liquid product, more preferably less than about 1 % by weight.
- the particulate-containing liquid products herein will be phase stable under conditions of commercial marketing and use of such products.
- the particulate containing liquid products herein will be relatively viscous. Frequently, the viscosity of the liquid products herein will range from about 0.3 Pa ⁇ s (300 cps) to about 5 Pa ⁇ s (5000 cps), more preferably from 0.5 Pa ⁇ s (500 cps) to about 3 Pa ⁇ s (3000 cps). For purposes of the invention, viscosity is measured with a Brookfield Viscometer using a RV #5 spindle at 50 rpm and at a temperature of about 20°C.
- the venting performance of the venting means (20) may be substantially reduced when the contained liquid product contacts the membrane (22).
- the liquid product comprises particulate solids suspended in the liquid product.
- the particulate solids according to the present invention are selected from the group consisting of carbonate, percarbonate, perborate and mixtures thereof.
- the membrane is tne most exposed part of the venting means towards the contained product.
- the contacting between the product and the membrane inside a container may mainly occur through splashes during shipment and transportation with agitation of the container.
- plaqueshing means a non-continuous and brief contact of a liquid substance upon a surface when the liquid is agitated within the container. The splashing of the contained liquid product occurs mainly during shipment and transportation, when the risk of agitation of the container is higher.
- these membranes may lose their gas-permeability when the liquid product comprising suspended particulate solids contacts the membrane (22). Indeed, it has been found that the particulate solids according to the present invention suspended in the liquid product may sediment out of the product and deposit on the membrane. In this manner, the membrane or part thereof may be covered by the particulate solids sedimented out of the liquid product, i.e. the venting performance of the membrane is reduced for any part of the membrane clogged by the particulate solids according to the present invention sedimented out of the liquid and not drained away from the membrane. Consequently, the venting capacity of the container is reduced or effectively lost.
- the contacting between the contained liquid product and the membrane (22) occurs mainly during shipment and transportation of the container. Indeed, the liquid product splashes onto the membrane within the container when the container is agitated. It has been found that the amount of splashing normally occurring during shipment and transportation is sufficient to completely interrupt the venting capacity of the container. Another means by which product may contact with the membrane is during an upside down storage of the container. It has been further found that other venting systems, like valves for example, may also suffer from a similar disadvantage.
- a possible way to remove the splashed product from the membrane is to scrape the surface of the membrane splashed by the product. It has been found that the venting capacity of the membrane recovered sufficiently to prevent significant bottle deformation once the splashed product was scraped from the surface of the membrane.
- the scraping of the surface may be achieved with a device having the form of a shovel, for example.
- this solution solves the problem of the present invention, it has two major disadvantages. Firstly, the scraping action has to be carried out either manually by the user, which is inappropriate, or by a mechanical moving device within the container, which may be complex and expensive. Secondly, the action of scraping the splashed product from the membrane may damage the membrane. Indeed, especially the impermeability of the membrane to liquids may be easily lost through scraping. Thirdly, the action of scraping is also ineffective if the interior of the surface pores of the membrane is blocked.
- the co-pending International Patent Application No. PCT/US96/01610 provides a container with venting means comprising protecting means.
- the protecting means protect the venting means from splashed product, e.g. with walls interposed between the product and the venting means.
- the co-pending European Patent Application No. 95104281.1 provides a container in which the splashed product is enabled or compelled to drain away from the venting means automatically without any scraping of the venting means.
- This means may comprise the positioning of the venting means in an inclined or vertical plane with respect to the supporting plane upon which the container stands in its upright position, as shown for example in Figure 1b.
- the means comprises a draining means (23) extending from and connected to the venting means, as shown for example in Figure 1c.
- the draining means may also be inclined or vertical with respect to the supporting plane upon which the container stands in its upright position.
- the loss of venting capacity is dependent on the tendency of the suspended particulate solids to sediment from the liquid product on to the membrane surface, thus decreasing the venting capacity.
- a key factor which determines the tendency for the suspended particulate solids to sediment out from the liquid product is the maximum size of the particulate solids. Indeed, if the maximum size of the particulate solids suspended in the liquid product is greater than about 400 ⁇ m, then the particulate solids sediment out of the liquid product onto the membrane before the splashed product drains back into the container. The particulate solids sedimented out of the liquid product may clog the membrane reducing the venting capacity of the membrane itself.
- the maximum size of the particulate solids suspended in the liquid product is smaller than about 400 ⁇ m, then the particulate solids are more likely to remain suspended in the liquid product until the liquid product is drained back into the container. Accordingly, according to the present invention the maximum size of the particulate solids suspended in the liquid product is smaller than about 400 ⁇ m, more preferably smaller than about 200 ⁇ m, even more preferably smaller than about 150 ⁇ m, most preferably smaller than about 100 ⁇ m. To obtain particulate solids with a reduced maximum size, these particulate solids may be sieved and/or ground. The particulate solids having reduced maximum size according to the present invention are then added to the liquid product.
- minors are optional ingredients of the compositions or products such as water, stabilisers, chelating agents, radical scavengers, surfactants, bleach activators, builders, soil suspenders, dye transfer agents, solvents, brighteners, perfumes, foam suppressors, dyes and combinations thereof.
- Both sodium carbonate, percarbonate and perborate are suspended as solid components in this liquid product.
- About 1.5% of the sodium carbonate solid particles and about 1.5% of the percarbonate solid particles of Example I have a maximum size of greater than 400 ⁇ m.
- About 1.5% of the sodium carbonate solid particles and about 1.5% of the perborate solid particles of Example II have a maximum size of greater than 400 ⁇ m.
- the maximum size of sodium carbonate and perborate suspended as solid components in the liquid product of Example III is sieved to obtain a maximum size distribution of between 200 ⁇ m and 400 ⁇ m.
- the sodium carbonate and percarbonate of Example IV is less than 100 ⁇ m.
- a membrane of the type Versapor ® V800R closes one open end of a cylindrical tube (41).
- the membrane comprises an inner surface (42) directed towards the inside of the cylindrical tube, whereas the opposite outer surface (43) is completely outside the cylindrical tube.
- This membrane undergoes repeated splashes (Fig. 2a) with a liquid product (44), whereby the liquid product stays on the inner surface for 1 minute.
- the splashed liquid product is let to drain away from the membrane for 24 hours by turning the inner surface upside down.
- the venting pressure is measured after 24 hours drainage using a bubble point method.
- the "bubble point method”, mentioned above, comprises the following steps:
- the pressure measured with the bubble point method is correlated to the venting capacity of the venting means. Indeed, the higher the pressure measured the lower is the venting capacity. On the contrary, the lower the pressure measured the higher the venting capacity.
- the liquid product of Examples I and II comprising particulate solids with particle maximum sizes of greater than 400 ⁇ m shows a substantially reduced venting capacity.
- the venting capacity of the membrane is sufficiently maintained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Closures For Containers (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Claims (10)
- Behälter (10), enthaltend ein flüssiges Produkt, wobei der Behälter das Lüften des flüssigen Produkts mittels einer Lüftungsvorrichtung (20) gestattet und die Lüftungsvorrichtung den Durchgang von Gasen zwischen dem Inneren und dem Äußeren des Behälters erlaubt, sobald sich der Druck im Inneren des Behälters von dem Umgebungsdruck unterscheidet, wobei die Lüftungsvorrichtung weiterhin gegenüber Gasen permeabel, aber gegenüber dem flüssigen Produkt impermeabel ist und das flüssige Produkt teilchenförmige Feststoffe umfaßt, ausgewählt aus der Gruppe bestehend aus Carbonat, Percarbonat, Perborat und Mischungen davon, und die teilchenförmigen Feststoffe in dem flüssigen Produkt suspendiert sind, dadurch gekennzeichnet, daß die Maximalgröße der teilchenförmigen Feststoffe nicht größer als 400 µm ist.
- Behälter nach Anspruch 1, dadurch gekennzeichnet, daß die Maximalgröße der teilchenförmigen Feststoffe nicht größer als 200 µm ist.
- Behälter nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Maximalgröße der teilchenförmigen Feststoffe nicht größer als 100 µm ist.
- Behälter nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Lüftungsvorrichtung (20) eine Öffnung (21), die das Innere mit dem Äußeren des Behälters verbindet, sowie eine Membran (22) umfaßt, die die Öffnung (21) abdeckt, welche den Durchgang von Gasen erlaubt, allerdings den Durchgang des flüssigen Produkts verhindert.
- Behälter nach Anspruch 4, dadurch gekennzeichnet, daß die Membran eine mikroporöse Folie ist.
- Behälter nach Anspruch 5, dadurch gekennzeichnet, daß die Membran Mikroporen der Größe in dem Bereich von 0,1 µm bis 5 µm aufweist.
- Behälter mindestens einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die Membran (22) mit mindestens einer Oberfläche auf das flüssige Produkt im Inneren des Behälters gerichtet ist, die hydrohober als das flüssige Produkt ist.
- Behälter nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Lüftungsvorrichtung (20) in einer geneigten Ebene in Bezug auf die Auflageebene, auf der der Behälter in seiner aufrechten Position steht, positioniert ist.
- Behälter nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Lüftungsvorrichtung (20) weiterhin eine Entwässerungsvorrichtung (23) umfaßt, die sich von der Lüftungsvorrichtung (20) aus erstreckt und mit ihr verbunden ist, und wobei die Entwässerungsvorrichtung (23) in Bezug auf die Auflagefläche, auf der der Behälter in seiner aufrechten Position steht, in einer geneigten oder vertikalen Richtung verläuft.
- Behälter nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Lüftungsvorrichtung (20) weiterhin eine Schutzvorrichtung umfaßt.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996614514 DE69614514T2 (de) | 1996-06-26 | 1996-06-26 | Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält |
EP19960870083 EP0816247B1 (de) | 1996-06-26 | 1996-06-26 | Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält |
JP50347398A JP3241389B2 (ja) | 1996-06-26 | 1997-06-23 | 粒状固形物を含む液体製品を収容する通気容器 |
US09/202,963 US6548134B1 (en) | 1996-06-26 | 1997-06-23 | Vented container containing a liquid product with particulate solids |
CN 97197477 CN1228745A (zh) | 1996-06-26 | 1997-06-23 | 盛装带固体颗粒液态产品的通气容器 |
CA 2258734 CA2258734A1 (en) | 1996-06-26 | 1997-06-23 | Vented container containing a liquid product with particulate solids |
PCT/US1997/010962 WO1997049616A1 (en) | 1996-06-26 | 1997-06-23 | Vented container containing a liquid product with particulate solids |
AU35766/97A AU3576697A (en) | 1996-06-26 | 1997-06-23 | Vented container containing a liquid product with particulate solids |
ARP970102806A AR007486A1 (es) | 1996-06-26 | 1997-06-25 | Envase |
TW86109943A TW399022B (en) | 1996-06-26 | 1997-07-15 | Container containing a liquid product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19960870083 EP0816247B1 (de) | 1996-06-26 | 1996-06-26 | Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0816247A1 EP0816247A1 (de) | 1998-01-07 |
EP0816247B1 true EP0816247B1 (de) | 2001-08-16 |
Family
ID=8226152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960870083 Expired - Lifetime EP0816247B1 (de) | 1996-06-26 | 1996-06-26 | Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0816247B1 (de) |
JP (1) | JP3241389B2 (de) |
CN (1) | CN1228745A (de) |
AR (1) | AR007486A1 (de) |
AU (1) | AU3576697A (de) |
CA (1) | CA2258734A1 (de) |
DE (1) | DE69614514T2 (de) |
TW (1) | TW399022B (de) |
WO (1) | WO1997049616A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6696395B1 (en) * | 1999-03-18 | 2004-02-24 | The Procter & Gamble Company | Perfumed liquid household cleaning fabric treatment and deodorizing compositions packaged in polyethylene bottles modified to preserve perfume integrity |
AU2001281900A1 (en) * | 2000-06-30 | 2002-01-14 | Dsm N.V. | Packaging means for liquid yeast |
DE602007004321D1 (de) * | 2007-07-18 | 2010-03-04 | Lesaffre & Cie | Neue Verpackung für flüssige Produkte |
US8662358B2 (en) | 2010-02-02 | 2014-03-04 | Diversey, Inc. | Liquid dispensing container and method |
EP2544956A4 (de) * | 2010-03-11 | 2015-01-21 | Diversey Inc | Vorrichtung und verfahren für ein entlüftungsrohr |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1389659A (en) * | 1919-10-03 | 1921-09-06 | Mathew J Hollowood | Receptacle for bacterial cultures |
DE8621927U1 (de) * | 1986-08-16 | 1986-10-09 | Mauser-Werke GmbH, 5040 Brühl | Verschluß mit Entgasungsventil |
DE8622818U1 (de) * | 1986-08-26 | 1989-08-17 | C.A. Greiner und Söhne GmbH & Co KG, 72622 Nürtingen | Flasche zur Züchtung und Erhaltung von Zellkulturen |
GB8900496D0 (en) * | 1989-01-10 | 1989-03-08 | Procter & Gamble | Liquid detergent composition containing enzyme and enzyme stabilization system |
GB9124489D0 (en) * | 1991-11-18 | 1992-01-08 | Unilever Plc | Liquid cleaning products |
GB9216454D0 (en) * | 1992-08-03 | 1992-09-16 | Ici Plc | Detergent compositions |
CA2162247C (en) * | 1993-05-18 | 2001-02-13 | Nady Bilani | Container for fluids |
CN1076303C (zh) * | 1995-02-07 | 2001-12-19 | 普罗格特-甘布尔公司 | 通气系统的保护装置 |
ES2147804T3 (es) * | 1995-03-23 | 2000-10-01 | Procter & Gamble | Envase o tapa que tiene un sistema de ventilacion con medios de drenaje. |
-
1996
- 1996-06-26 EP EP19960870083 patent/EP0816247B1/de not_active Expired - Lifetime
- 1996-06-26 DE DE1996614514 patent/DE69614514T2/de not_active Expired - Fee Related
-
1997
- 1997-06-23 CA CA 2258734 patent/CA2258734A1/en not_active Abandoned
- 1997-06-23 JP JP50347398A patent/JP3241389B2/ja not_active Expired - Fee Related
- 1997-06-23 WO PCT/US1997/010962 patent/WO1997049616A1/en active Application Filing
- 1997-06-23 AU AU35766/97A patent/AU3576697A/en not_active Abandoned
- 1997-06-23 CN CN 97197477 patent/CN1228745A/zh active Pending
- 1997-06-25 AR ARP970102806A patent/AR007486A1/es unknown
- 1997-07-15 TW TW86109943A patent/TW399022B/zh active
Also Published As
Publication number | Publication date |
---|---|
AR007486A1 (es) | 1999-10-27 |
AU3576697A (en) | 1998-01-14 |
CN1228745A (zh) | 1999-09-15 |
JP3241389B2 (ja) | 2001-12-25 |
CA2258734A1 (en) | 1997-12-31 |
DE69614514D1 (de) | 2001-09-20 |
DE69614514T2 (de) | 2002-05-08 |
WO1997049616A1 (en) | 1997-12-31 |
TW399022B (en) | 2000-07-21 |
JPH11513003A (ja) | 1999-11-09 |
EP0816247A1 (de) | 1998-01-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6196409B1 (en) | Venting means | |
EP0729901B1 (de) | Packung oder Kappe mit einem, mit einer Flüssigkeitsabzugsvorrichtung versehenen, Entlüftungssystem | |
US5901867A (en) | Ventable cap | |
AU751189B2 (en) | Dispensing structure which has a lid with a pressure-openable valve | |
CA2362118A1 (en) | Sealed cartridge for making a beverage | |
US6548134B1 (en) | Vented container containing a liquid product with particulate solids | |
JPH11137243A (ja) | 培養皿アッセンブリおよびその挿入体 | |
WO1996014249A3 (en) | Container having improved reclosable pour spout mounted thereon and process therefor | |
EP0816247B1 (de) | Ein belüfteter Behälter,der eine Flüssigkeit mit Feststoffartikeln enthält | |
EP0752376B1 (de) | Behälter oder Kappe mit Be- oder Entlüftungsvorrichtung | |
AU4864896A (en) | Protecting means for venting systems | |
KR101445193B1 (ko) | 통기 커버 및 이를 구비한 용기 | |
MXPA98000195A (en) | Best ventilation methods | |
CA2163306C (en) | Container | |
AU3234499A (en) | Protecting means for venting systems | |
MXPA97006058A (en) | Protective medium for ventilac systems | |
JPWO2021087476A5 (de) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI |
|
17P | Request for examination filed |
Effective date: 19980630 |
|
17Q | First examination report despatched |
Effective date: 19990512 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
RBV | Designated contracting states (corrected) |
Designated state(s): CH DE FR GB IT LI |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: RITSCHER & SEIFERT Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69614514 Country of ref document: DE Date of ref document: 20010920 |
|
ITF | It: translation for a ep patent filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20020618 Year of fee payment: 7 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030501 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030602 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20030630 Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040626 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050101 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040626 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050228 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050626 |