JP2003523894A - Containerized product and tool with removal means - Google Patents

Abstract

  (57) [Summary] PROBLEM TO BE SOLVED: To provide a tool for taking out liquid and a product in a container that can be easily designed so that liquid does not drip without requiring expensive valve parts. The present invention is a product in a container for taking out a liquid comprising a liquid container having an outlet and a porous membrane, wherein the membrane is hermetically sealed to the container so that fluid passing through the outlet always passes through the membrane, The present invention relates to a packaged product characterized in that the bubble point of a membrane containing liquid exceeds 1 kPa when measured at ambient temperature and pressure using the liquid contained in the container. The present invention is also a device for taking out a liquid comprising a liquid container having an outlet and a porous membrane, and the membrane is hermetically sealed to the container so that the fluid passing through the outlet always passes through the membrane, and the average pore size of the membrane is The present invention relates to a device having a thickness of 1 to 100 μm and a thickness of less than 1 mm.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention is primarily a device designed to dispense or dispense liquid from a reservoir, such as a bottle or sponge,
And a packaged product comprising a device containing a liquid.

[0002]

[Prior art]

Many containerized products are sold in containers provided with an outlet designed to control the flow of liquid out of the container. Products sold in take-off containers include paints, adhesives, shoe inks, health and beauty care lotions, various food and beverage products, and various detergent products. The combination of container and member is designed to facilitate removal, for example a teat of a beverage bottle (especially for infants), or designed to control the flow of liquid from the container, for example. It can be the "anti-drip valve" of the source bottle. One of the common removal members is made from a silicone-based compound, the opening of which, for example, by grasping and deforming the bottle by internal pressure,
Alternatively, the child operates by sucking the take-out member. Some removal members are designed to act like valves that open only when a predetermined internal pressure is exceeded.

[0003] Another known container-containing product for taking out a liquid includes a container containing a liquid and a plastic resin take-out member which is not flexible and does not deform. US-A-4050826 (issued Sep. 27, 1977) relates to an antiperspirant / deodorant dispenser with a dome made of, in particular, a sintered, porous synthetic plastic as a dispensing member. It is intended to bring the liquid out of the pore and back into the container after using the applicator.

[0004]

SUMMARY OF THE INVENTION It is an object of the invention to extract a liquid, which can be easily designed so that the liquid does not drip or spill without the need for expensive valve parts. It is to provide a tool, especially a packaged product. In one embodiment of the invention, the device provides uniform, controlled withdrawal. In another embodiment of the invention, the device provides for very fast rate of removal without any dripping of liquid when removal is stopped.

[0005]

[Means for Solving the Problems]

The present invention is a container-containing product for taking out a liquid having a liquid storage container having an outlet and a porous membrane, wherein the membrane is hermetically sealed in or around the container so that the fluid passing through the outlet always passes through the membrane. Hermetically s
The bubble point of a membrane containing a liquid that has been ealed) is greater than 1 kPa when measured at ambient temperature and pressure with the liquid contained in the container.

Another embodiment of the invention comprises a liquid container with an outlet and a porous membrane, the membrane being hermetically sealed to or around the container to ensure that fluid through the outlet passes through the membrane. The present invention relates to a device for taking out a liquid, characterized in that the membrane has an average pore size of 1 to 100 μm and a thickness of less than 1 mm.

[0007]

DETAILED DESCRIPTION OF THE INVENTION

The utensils and packaged products of the present invention operate on the principle of a "closed delivery system". As used herein, the term "closed delivery system" means that air will not enter the system if the membrane is saturated with liquid and the vacuum pressure does not exceed the bubble point pressure of the membrane, even under vacuum. Is. As a result, liquid can be withdrawn from the closed delivery system through the membrane, for example by internal pressure or external suction. The internal pressure can be generated, for example, by grasping the container firmly and deforming it. The suction from the outside can be generated by sucking the outlet of the bottle, for example, when drinking from the bottle. Further, the suction from the outside can be generated by the adhesive force of the surface to which the liquid is applied, for example, in the case of skin absorbing lotion.

However, even if the outlet is below the surface of the liquid, if the pressure due to the liquid on top does not exceed the bubble point pressure of the saturated membrane, the liquid will not be taken out of the container (ie spills and drips). Nothing). In such a situation, air from the outside atmosphere cannot enter the enclosed delivery system, resulting in no liquid exiting the enclosed delivery system.

[0009]   The term "fluid" as defined herein includes liquids or gases.

As used herein, the term “hermetically sealed” refers to gas (especially air) when the membrane is saturated with liquid, unless the pressure differential across the membrane exceeds the bubble point pressure. It means neither moving from the outside environment into the container nor from inside the container to the outside environment. In particular, the membrane-container seal or the membrane-membrane seal prevents gas leakage from the sealed area.

The average pore size of the membrane is 100 μm or less, preferably 50 μm or less,
It is more preferably 10 μm or less, and most preferably 5 μm or less. It is also preferred that the membrane has a pore size of at least 1 μm, preferably at least 3 μm. Furthermore, the pore size distribution shows that the size is 100μ for 95% of the pores.
m or less, preferably 50 μm or less, more preferably 10 μm or less, most preferably 5 μm.

The average thickness of the membrane is less than 1 mm, preferably less than 100 μm, more preferably less than 30 μm, even more preferably the average thickness of the membrane is 1
It is 0 μm or less, and most preferably 5 μm or less.

The term “lipophilic” as used herein has a receding contact angle with an oily liquid to be transferred of less than 90 degrees, preferably less than 70 degrees, more preferably 5 degrees.
Refers to materials that are less than 0 degrees, even more preferably less than 20 degrees, and most preferably less than 10 degrees.

The term “hydrophilic”, as used herein, has a receding contact angle with distilled water of less than 90 degrees, preferably less than 70 degrees, more preferably less than 50 degrees, even more preferably less than 20 degrees. , Most preferably less than 10 degrees.

Container As used herein, the term “container” refers to a bulk area for containing or storing liquid prior to application or withdrawal. In one aspect of the invention, the liquid is stored or contained within the bulk material pores provided within the container. In another aspect of the invention, the only material contained in the container is the liquid itself. In this aspect, the container is defined by a wall region, such as found in a bottle or container.

An important point required for the container is low average flow resistance. This means, for example, that the transmittance k is at least 10 ^-11 m ² , preferably more than 10 ^-8 m ² , more preferably more than 10 ^-7 m ² , and most preferably more than 10 ^-5 m ^2. Is. In the first aspect of the present invention, by using a material having a relatively high porosity, it is possible to realize a high transmittance for a bulk material. Such porosity is usually defined as the ratio of the volume of the material filling the pores of the porous material to the total volume of the porous material, and is at least 50%, and preferably at least 50%, as measured by commonly known density measurements. It must be at least 80%, more preferably at least 90%, or 98% or 99%.

In a second aspect of the invention, the bulk material consists essentially of one pore or void space with porosity approaching or reaching 100%. In this case, the bulk region is a liquid container, for example a bottle, or some other type of container defined by a wall region, the volume of the liquid container being variable. The change in volume is
Preference is given to flexing the wall region or by piston action.

When present, the pores of the bulk material may have a diameter of about 200 μm, or about 500 μm, or about 1 mm, or about 9 mm or more. Such pores may be small prior to transferring the fluid and may have a small bulk material volume, and may expand immediately prior to or during contact with the liquid.
Preferably, if such pores are compressed or collapsed, the pores should be capable of expanding at a volume expansion coefficient of at least 5 times, preferably more than 10 times. Such expansion can be achieved using a material having an elastic modulus greater than the external pressure. On the other hand, the external pressure must be less than the bubble point pressure. High porosity can be achieved with many materials, which are well known in the art. For example, such a porosity value can be easily realized by the fiber member. Non-limiting examples of such fiber materials that may be provided in the bulk region are those made from high loft nonwovens, such as polyolefin or polyester fibers. It is used in the field of hygiene or in the automotive industry, or in the upholstery or HVAC industry. Other examples include fibrous webs made from cellulosic fibers.

Further, such porosity can be achieved by a porous, open-cell foam structure, such as (without limitation in any way) a polyurethane reticulated foam, a cellulose sponge, or a high internal phase emulsion polymerized process made by an open process. Cellular foam (HI
PE foam) (all of which are known in various industrial applications such as filtration technology, upholstery, hygiene, etc.). Such porosity may be achieved by a wall region (eg, tubing) surrounding the void defining the bulk material. Alternatively, a plurality of thin tubular objects may be bundled. Furthermore, such porosity can be achieved by "space holders" such as springs, spacers, particulate materials,
It may be realized by a corrugated structure or the like. The pore size or transmittance of the bulk material may be uniform or non-uniform throughout the bulk material.

The bulk material can have various shapes or contours. Bulk material is
It may be cylindrical, ellipsoidal, sheet-like, stripe-like or of any irregular shape. The bulk material may have a constant cross-sectional area and a constant or varying cross-sectional shape (eg, rectangular, triangular, circular, oval, or irregular shape).

The absolute size of the bulk material should be chosen to suit the geometric requirements of the intended application. Generally, it is desirable for the dimensions to be minimal for the intended application. An advantage of the design according to the invention is that it has a much smaller cross section than conventional materials. The bulk material dimensions are determined by the transmittance of the bulk material. High flow rate (ie large pores) and high vertical liquid transport (high
Since it is not necessary to design the bulk material under the contradictory conditions of vertical liquid transport (ie small pores), the transmittance may be very high due to the large pores possible. Due to such a large transmittance, the cross-sectional area can be made very small, which allows a great variety of designs.

The bulk material need not be essentially deformable, ie it retains its outer shape, shape and volume under the usual conditions of the intended application. However, for many applications it is desirable for the bulk material to be soft and flexible. Bulk materials are subject to, for example, forces or pressures that cause them to deform during use, or under the influence of the fluid itself,
The shape may be changed. Deformability or otherwise may be achieved by choosing one or more materials as the bulk material (eg fibrous material).

The confining separations of the bulk material may further comprise materials that change their properties significantly when wet, or that may even dissolve when wet. That is, the open cell foam material that the bulk material comprises may have relatively small pores made at least in part from a soluble material such as polyvinyl alcohol. This small porosity sucks in the liquid in the first stages of liquid transport and dissolves rapidly, leaving a large void filled with liquid. Alternatively, such materials may completely or partially fill the larger pores. For example, the bulk material may comprise a soluble material such as poly (vinyl) alcohol or poly (vinyl) acetate.

Membrane As used herein, the term “membrane” is broadly defined as a material or region that is permeable to a liquid, gas, or suspension of particles in a liquid or gas. The membrane may be liquid permeable through the capillaries, eg, with microporous regions. Microporous hydrophobic membranes are typically permeable to gases, while aqueous liquids pass through the membrane as long as the driving pressure is below a threshold pressure (usually referred to as "breakthrough" or "bridging" pressure). Do not move. In contrast, hydrophilic microporous membranes transfer aqueous liquids. However, once wet, the gas (eg, air) essentially does not pass through the membrane as long as the driving pressure falls below a threshold pressure (usually referred to as the "bubble point pressure"). Hydrophilic monolithic films typically allow water vapor to pass through, but the gas does not move rapidly through the membrane. Similarly,
The membrane may be used with non-aqueous liquids such as oil. For example, most hydrophobic materials are lipophilic in nature. Thus, a hydrophobic but lipophilic microporous membrane is permeable to oil but not to water.

Membranes are often manufactured as thin sheets, either alone or in support layers (
For example, it may be used in combination with a non-woven fabric) or in a support member (for example, a spiral holder). Other forms of membranes include, but are not limited to, thin polymer layers coated directly onto other materials, bags, corrugated sheets.

Other known membranes are “activatable” or “switchable” membranes that can change properties after activation or in response to a stimulus. Such property changes can be permanent or reversible, depending on the particular application. For example, the hydrophobic microporous layer may be coated with a thin soluble layer made of poly (vinyl) alcohol or the like. Such a double layer system is impermeable to gases. However, once wet and the poly (vinyl) alcohol film melts, the system becomes permeable to gases but still impermeable to liquids. Conversely, when a hydrophilic membrane is coated with such a bilayer, it can become activated upon contact with a liquid, allowing the liquid to pass but not the air.

Another useful membrane parameter is the ratio of transmittance to thickness. In the context of the present invention, this ratio is called “membrane conductivity”. This is because, for a given driving force, the amount of liquid that passes through a material such as a membrane is proportional to the transmittance of the material, that is, the higher the transmittance, the more liquid that can be transmitted
On the other hand, it reflects the fact that it is inversely proportional to the thickness of the material. In other words, because the transmittance is lower for the same material with a smaller thickness,
It can be seen that this lack of transmittance (when it is considered that a high flow rate is preferable) can be compensated by the thickness. Typical k / d for packaged products or utensils according to the invention
Is about 1 × 10 ^{-9 to} about 500 × 10 ^-9 m, preferably about 100 × 10 ^{-9 to} about 500 × 10 ^-9 m. k / d is preferably at least about 1 × 10 ⁻⁷ m
And more preferably at least about 1 × 10 ⁻⁵ m.

For a porous membrane that functions once wet (permeable to liquids and impermeable to air), always provide at least one continuous layer of pores in the membrane. It must be filled with liquid and not gas or air. Therefore, evaporation of liquid from the pores of the membrane must be minimized by lowering the vapor pressure in the liquid or increasing the vapor pressure in air.

It is also possible to minimize the evaporation of liquid from the packaged product before use, either by a vapor-tight cap or by completely wrapping the packaged product (eg with a film in the case of a sponge). You can Suitable films can be made from various materials such as polyethylene.

The present invention is useful as a liquid applicator or dispenser. Examples of liquids that can be applied or dispensed using the packaged product or device of the present invention include:
The following are listed. Paints, adhesives, shoe inks, health and beauty care lotions, detergent compositions, various food and beverage products. Especially in the case of beverage products, the invention may be designed for use as a beverage bottle. Other specific examples include the following. A paint applicator for removing the paint product in a container, optionally with an applicator such as a brush or roller. Skin creams or lotions applied to the body, such as cosmetics (eg lipstick and nail polish) and pharmaceutical compositions. Hard surfaces (eg kitchen counters (wo
rk surfaces), windows, and floors) detergent solution for cleaning. For floors, the device of the present invention may be incorporated into a floor mop.

(Test Method: Bubble Point Pressure (Membrane)) The following procedure is used to evaluate the bubble point pressure of the membrane.

First, the membrane material was transferred to a plastic funnel (Fischer Scientific (Nidd
Catalog No. 62561720) sold by Erau, Germany) and a length of tubing. The funnel and tube are connected airtightly. Ceiling is Parafllm
Catalog number 6178 sold by M (Fischer Scientific (Nidderau, Germany)
0002). A circular piece of membrane material (slightly larger than the open area of the funnel) is hermetically sealed to the funnel. Sealing is performed with a suitable adhesive, such as Pattex (sold by Henkel KGA (Germany)). Leave the lower end of the tube open. That is, it is not covered by the membrane material. The tube must be long enough. That is, a maximum length of 10 m may be required.

If the test material is very thin or fragile, before mounting the test material on the funnel and tube, use a very open support structure (eg a layer of nonwoven material with continuous pores). It is suitable to support the test material. If the test sample is not large enough, use a smaller funnel (for example, Fisher S
It may be replaced with the catalog number 62561602) sold by Cientific (Nidderau). If the size of the test sample is too large, a representative piece may be cut to fit the funnel.

The test liquid may be the liquid to be transported (ie oil or grease),
For ease of comparison, the test liquid is TRITON X-1 in distilled or deionized water.
It must be a 0.03% solution of 00 (for example sold by MERCK KGaA (Darmstadt, Germany) under the catalog number 1.08603) with a surface tension of 33 mN / m.

With the lower (open) end of the funnel held in the liquid in the container, the part of the funnel fitted with the membrane is brought out of the liquid. If necessary (but not always), the funnel with the membrane material must be left standing.

Monitor the height while slowly continuing to raise the membrane above the container.
Then carefully observe every corner of the funnel or membrane itself (optionally with the help of suitable lighting) to see if air bubbles begin to penetrate through the material into the funnel interior. The height from the container at this time is recorded as the bubble point height.

From this height H, the bubble point pressure BPP is calculated as follows. BPP = ρ · g · H where ρ is the density of the liquid and g is the gravitational constant (g is approximately 9.81 m / s ² ).

Other measurement methods may be used, especially when the bubble point pressure exceeds about 50 kPa. For example, the method commonly used to evaluate the bubble point pressure of membranes used in filtration systems. In this method, two chambers filled with liquid are separated by a membrane, and the pressure applied to one is increased (eg air pressure is applied). Then, record the time when the bubble first "breaks through."

Pore Size Measurement Optical measurement of pore size is used, especially for thin layer porous systems.
This is done using standard image analysis methods known to those skilled in the art. The principle of this method consists of the following steps. 1) Prepare a thin layer of sample material by slicing a thick sample into a thin layer or using it directly if the sample itself is thin. The term "thin" refers to achieving a sample thickness that is thin enough that a clear cross-sectional image is visible using a microscope. A typical sample thickness is less than 200 μm. 2) Using a video microscope, set to an appropriate magnification and obtain a microscope image. Best results are obtained when about 10 to 100 pores are visible on the image. Then use standard image analysis software such as BioScan
Digitize this image using the company OPTIMAS. OPTIMAS is a typical IBM
It runs under Windows95 on a compatible PC. Good results should be obtained with a frame grabber with sufficient pixel resolution (preferably at least 1024 x 1024 pixels). 3) Convert the image to a binary image using appropriate thresholds, showing the pores visible on the image as white object regions, leaving the rest black. An automatic threshold setting procedure (such as that available under OPTIMAS) may be used. 4) Measure the area of each pore (object). With OPTIMAS, this area can be measured automatically. 5) For each pore, find the equivalent radius with a circle of the same cross-sectional area as the pore. If the A and area of pores, the equivalent radius is given by ^{r = (A / π) 1} /2. Then, using a standard statistical formula, the average pore size can be obtained from the pore size distribution. For materials with less uniform pore size, it is recommended to use at least three samples for measurement.

Optionally, a commercially available test device such as a Capillary Flow Porometer may be used to determine bubble point pressure, pore size, and pore size distribution. Capillar
The y Flow Porometer has a pressure range of 0 to 1380 kPa (0 to 200 ps).
i), sold for example by Porous Material, Inc. (Ithaca, New York, USA) (model number CFP-I2OOAEXI), and further explained in the respective manuals, for example 2/97.

(Measurement of Thickness) The thickness of a wet sample is measured with a desired compression pressure applied (if necessary, after a stabilization time of 30 seconds). To that end, the test was carried out using a standard caliper with a pressure zone diameter of 1 and 1/8 inch (approx. 2.86 cm) and a pressure applied to the sample of 0.2 psi (approx. gauge(
For example, using AMES (sold by Waltham, Mass., USA)).

(Measurement of Permeability and Conductivity) It is convenient to measure the permeability and conductivity using a commercially available test device.

For example, the device is commercially available as Permeameter. This device is, for example, Porou
s Matarial (Ithaca, New York, USA) under the name PMI Liquid Permeameter. This device has two stainless steel frits.
Is provided as a porous screen (this is also described in the pamphlet). The device consists of: Sample cell, inlet container,
Outlet container, waste container, filling and unloading valves and connections for each, electronic balance, computerized monitoring and valve control unit. A detailed description of a suitable test method using this device is given in our co-pending application PCT / US98 / 13497 (filed June 29, 1998) (Patent Attorney Directory Number CM1841).
FQ).

[0044]

【Example】

Example 1 The sponge comprises a bulk polyurethane material completely covered by a polyamide membrane. On both sides of the sponge and along the length of the sponge,
The membrane was sealed to itself to ensure that any fluid entering or exiting the sponge would pass through the membrane. The membrane has an average pore size of 20 μm, an open area of 14% and a thickness of 55 μm and was manufactured by Sefar (Ruschlikon, Switzerland) under number 03-20 / 14. The bulk material was 100 mm long, 90 mm wide, 5 mm high, had 10 pores per inch and was manufactured by Kureta (Stadtallendorf, Germany) (KS ppi 10).

The sponge was dipped in water to wet the entire membrane. Little or no water drips from the sponge, but rubbing the sponge over the arm transfers water to the skin.

Example 2 A sponge comprises a bulk polyurethane material completely covered by a polyamide membrane. On both sides of the sponge and along the length of the sponge,
The membrane was sealed to itself to ensure that any fluid entering or exiting the sponge would pass through the membrane. The membrane has an average pore size of 20 μm and an open area of 14%, and has a Verseidag-Techfab (Geldern W
aldeck, Germany) under the trade name Monodur PA20. The bulk material was 100 mm long, 90 mm wide, 5 mm high, had 10 pores per inch, and was manufactured by Recticel (Westfalen, Belgium) under the tradename TM10.

The sponge was dipped in Nivea Body Milk ^™ (sold by Beiersdorf (Hamburg, Germany)) to wet all the membranes. Little or no liquid drips from the sponge, but rubbing the sponge on the arm transfers the liquid to the skin.

Example 3 A sponge comprises a bulk polyurethane material completely covered by a polyamide membrane. On both sides of the sponge and along the length of the sponge,
The membrane was sealed to itself to ensure that any fluid entering or exiting the sponge would pass through the membrane. The following membrane was used.

(I) 03-50 / 37. Average pore size is 50 μm, open area is 37%, thickness is 50
μm.

[0050]   (Ii) 03-5 / 1. The average pore size is 5 μm, the open area is 1%, and the thickness is 75 μm.

(Iii) 03-10 / 2. Average pore size 10μm, open area 2%, thickness 45μ
m.

(Iv) 03-20 / 14. Average pore size 20μm, open area 14%, thickness 55
μm.

[0053]   All manufactured by Sefar (Ruschlikon, Switzerland).

The bulk material was 100 mm long, 90 mm wide, 5 mm high, had 10 pores per inch and was manufactured by Kureta (Stadtallendorf, Germany) (KS ppi 10 ).

The sponge was dipped in Nivea Body Milk ^™ (sold by Beiersdorf (Hamburg, Germany)) to wet all the membranes. Little or no liquid drips from the sponge, but rubbing the sponge on the arm transfers the liquid to the skin.

In Example 3, it was found that the liquid thickness was different when different membranes were used. In case of 03-5 / 1 membrane, the liquid thickness is 40μm.
In the case of the membrane of No. 2, the liquid thickness was 34 μm, and in the case of the membrane of 03-20 / 14, the liquid thickness was 174 μm.

Example 4 An elastomeric structure was made from a thin mesh with large pores. The mesh has a volume with a pore size of 5 mm, forming a void and containing 250 mL of fluid. The structure is completely covered by a polyamide membrane to ensure that fluid entering or exiting the voids passes through the membrane. The membrane is sealed to itself on both sides of the mesh and along the length of the mesh. The membrane has a pore size of 20 μm and an open area of 14%,
Has a thickness of 55 μm, product code 03- by Sefar (Ruschlikon, Switzerland)
It was manufactured on 20/14.

When the membrane is wetted and the structure is compressed, the structure remains compressed. As soon as the membrane is brought into contact with the liquid, the elastic force is relaxed and the liquid is rapidly absorbed inside the sponge.

Example 5 The membrane was hermetically sealed to the opening of a bottle of Mr Proper (500 mL, manufactured by Procter & Gamble). The membrane is made of polyamide, has a pore size of 5 μm, an open area of 1% and a thickness of 75 μm and was manufactured by Sefar (Ruschlikon, Switzerland) with product code 03-5 / 1.

Once the membrane is wet, the bottle can be kept upside down with little or no dripping solution from the bottle. However, the liquid was immediately dispensed when the bottle was compressed by hand. When the bottle was released again, the elasticity of the bottle re-expanded the bottle, increasing the internal pressure without drying the membrane.

Example 6 NUK bottles (MAPA GmbH Gummi- & Plastikwerke, Posi) which are bottles for infants
fach 1280, D-27392 Zeven, Germany) with Learner's spout. The membrane was hermetically sealed at the opening of the bottle. The membrane was made of polyamide and had a pore size of 20 μm, an open area of 14% and a thickness of 55 μm. This membrane has the product code 0 by Sefar (Ruschlikon, Switzerland)
It was manufactured on 3-20 / 14.

Once the membrane is wet, the bottle can be kept upside down with little or no dripping solution dripping from the bottle. However, infants can easily drink from the bottle. As soon as the internal pressure falls below the bubble point pressure, air moves through the membrane and the internal pressure increases again. The membrane remained wet and the bottle was fully functional.

─────────────────────────────────────────────────── ─── Continued front page    (31) Priority claim number US9813521 (32) Priority date June 29, 1998 (June 29, 1998) (33) Priority claiming countries United States (US) (31) Priority claim number US9813523 (32) Priority date June 29, 1998 (June 29, 1998) (33) Priority claiming countries United States (US) (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE), OA (BF, BJ , CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, K E, LS, MW, SD, SL, SZ, UG, ZW), E A (AM, AZ, BY, KG, KZ, MD, RU, TJ , TM), AE, AL, AM, AT, AU, AZ, BA , BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, G E, GH, GM, HR, HU, ID, IL, IN, IS , JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, M N, MW, MX, NO, NZ, PL, PT, RO, RU , SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, Z A, ZW (72) Inventor Berg, Charles, John, Jr.             45215, Ohio, United States             Ioming, Hillcrest Drive             208 (72) Inventor Gerlach, Christian, Gerhal             To, Friedrich             Federal Republic of Germany, Day-60,316 Franc             Kuhult, Egenorf Strasse             Two (72) Inventor Aernsperger, Bruno, Johannes             Federal Republic of Germany, day-65,936 francs             Kuhult, Westerbach Strasse             89 (72) Inventor Rho, Donald, Carroll             45069, Ohio, United States             Est Chester, Emberwood Co             6324 (72) Inventor Schmid, Matthias             Federal Republic of Germany Day 65510 Idsi             Uttain, Altkoenig Bake 3 F term (reference) 3B074 AA02 AA03 AA08 AB01 AC02                       CC03                 3E084 AA02 AA12 AA24 AB01 KA18                       LG02

Claims (11)

[Claims] 1. A container-containing product for taking out a liquid, comprising a liquid storage container having an outlet and a porous membrane, wherein the membrane is provided in or around the container so that a fluid passing through the outlet always passes through the membrane. A bubble-filled product that is hermetically sealed to a liquid-containing membrane has a bubble point of more than 1 kPa when measured at ambient temperature and pressure using a liquid contained in the container. 2. The product in a container according to claim 1, wherein the bubble point pressure is higher than 2 kPa. 3. The packaged product according to claim 1, wherein the membrane has flexibility. 4. A device for removing a liquid comprising a liquid container having an outlet and a porous membrane, wherein the membrane is hermetically sealed to or around the container to ensure that the fluid passing through the outlet will pass through the membrane. A tool having an average pore size of the membrane of 1 to 100 μm and a thickness of less than 1 mm. 5. The device according to claim 4, wherein the membrane has a pore size distribution such that 95% of the pores have a size of 100 μm or less. 6. The bubble point pressure of the membrane is TRITON in distilled water.
5. Tool according to claim 4, characterized in that it has a value of at least 1 kPa, preferably at least 2 kPa, measured using a 0.03% solution of X-100 as the standard test liquid. 7. A tool for extracting an aqueous liquid, wherein the membrane is hydrophilic and the bubble point pressure of the membrane is at least 1 kPa, preferably at least 2 kPa when measured using distilled water. The device according to claim 4, which is characterized in that: 8. The device according to claim 4, wherein the membrane has flexibility. 9. A device according to any one of claims 4 to 8, characterized in that the container comprises a bulk material, preferably the bulk material is elastic. 10. The device according to claim 4, wherein the container is a bottle. 11. The device according to claim 4, wherein the membrane is a woven mesh or a film having openings.