WO2022258354A1 - Produkt zum bereitstellen von membranelementen und herstellungsverfahren - Google Patents
Produkt zum bereitstellen von membranelementen und herstellungsverfahren Download PDFInfo
- Publication number
- WO2022258354A1 WO2022258354A1 PCT/EP2022/063842 EP2022063842W WO2022258354A1 WO 2022258354 A1 WO2022258354 A1 WO 2022258354A1 EP 2022063842 W EP2022063842 W EP 2022063842W WO 2022258354 A1 WO2022258354 A1 WO 2022258354A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- membrane
- layer
- product
- adhesive
- carrier film
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 365
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims description 60
- 239000000853 adhesive Substances 0.000 claims description 59
- 239000012530 fluid Substances 0.000 claims description 42
- 230000008878 coupling Effects 0.000 claims description 31
- 238000010168 coupling process Methods 0.000 claims description 31
- 238000005859 coupling reaction Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 239000004831 Hot glue Substances 0.000 claims description 13
- 239000011888 foil Substances 0.000 claims description 12
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 11
- 238000003698 laser cutting Methods 0.000 claims description 9
- 239000000020 Nitrocellulose Substances 0.000 claims description 8
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 claims description 8
- 239000002250 absorbent Substances 0.000 claims description 8
- 230000002745 absorbent Effects 0.000 claims description 8
- 229920001220 nitrocellulos Polymers 0.000 claims description 8
- 229920006393 polyether sulfone Polymers 0.000 claims description 8
- 239000004695 Polyether sulfone Substances 0.000 claims description 7
- 239000012876 carrier material Substances 0.000 claims description 5
- 239000004447 silicone coating Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 229920002301 cellulose acetate Polymers 0.000 claims description 4
- 229920002492 poly(sulfone) Polymers 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 240
- 238000004458 analytical method Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 11
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- -1 polyethylene terephthalate Polymers 0.000 description 9
- 102000004169 proteins and genes Human genes 0.000 description 7
- 108090000623 proteins and genes Proteins 0.000 description 7
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 6
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 230000001066 destructive effect Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920002307 Dextran Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 3
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5023—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures with a sample being transported to, and subsequently stored in an absorbent for analysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
- B32B43/003—Cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0825—Test strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0887—Laminated structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/487—Physical analysis of biological material of liquid biological material
- G01N33/4875—Details of handling test elements, e.g. dispensing or storage, not specific to a particular test method
Definitions
- the invention relates to a product for providing membrane elements and a method for manufacturing such a product.
- Test methods which use a membrane material with fixed DNA, RNA and/or fixed proteins are often used to detect certain substances, in particular antibodies, in a sample.
- This molecular-biological method is used in particular in laboratory medicine and pharmaceutical research, for example as a "lateral flow assay” or test strip.
- the membrane material can also be "functionalized", i.e. have a surface structure that influences and/or controls the behavior, in particular a microfluidic behavior, of the sample. In this way, for example, the reaction intensity of the samples can be increased.
- the membranes are placed in an analyzer following application of a sample. This requires the membranes to be trimmed to a suitable shape so that the membranes are securely and accurately positioned in the analyzer.
- a first aspect of the invention relates to a product for providing membrane elements at least comprising: a carrier film; and a membrane sheet at least comprising: a backing layer; and a membrane layer; wherein the membrane sheet is detachably coupled to the carrier sheet; and wherein the membrane sheet comprises a plurality of substantially discrete membrane elements.
- the product is designed in particular to provide a plurality (preferably 2 or more, more preferably more than 20, more preferably more than 100) of membrane elements, it being possible for the membrane elements to be detached and/or decoupled individually from the product.
- the support layer of the membrane film is advantageously detachably coupled to the carrier film, so that the membrane film can be detached from the carrier film, in particular pulled off.
- Individual membrane elements are preferably designed and/or constructed and/or shaped in such a way that they can be inserted into a test cassette and/or into an analysis device and/or into a sample holder with an essentially precise fit.
- the product has a stretched and/or elongate and/or ribbon-like shape and is more preferably designed to be unwound from a roll. This enables space-saving storage and advantageous provision of the membrane elements, for example for use in an analysis method.
- the supporting layer preferably comprises and/or consists of: PET (polyethylene terephthalate), PE (polyethylene), EVA (ethylene-vinyl acetate copolymer), PP (polypropylene), PVC (polyvinyl chloride), EVOH (ethylene vinyl alcohol copolymer), PA (polyamide) and/or a similar material, especially a material that has a small thickness and high flexibility and durability.
- PET polyethylene terephthalate
- PE polyethylene
- EVA ethylene-vinyl acetate copolymer
- PP polypropylene
- PVC polyvinyl chloride
- EVOH ethylene vinyl alcohol copolymer
- PA polyamide
- the supporting layer advantageously has a thickness of approximately 10 ⁇ m to approximately 20 ⁇ m, in particular approximately 12 ⁇ m.
- the supporting layer is advantageously arranged at least in regions between the carrier film and the membrane layer.
- the membrane layer preferably comprises a porous, in particular a microporous, and/or an absorbent, in particular a highly absorbent material.
- a porous, absorbent material has, for example, a sponge structure and is designed to absorb and/or absorb fluids.
- the membrane layer preferably comprises a microfilter membrane layer and/or the membrane layer has a pore size, in particular a nominal, mean and/or maximum pore size, of between about 0.1 ⁇ m and about 20 ⁇ m, preferably between about 5 ⁇ m and 15 ⁇ m. whereby in particular an advantageous capillary effect of the membrane layer for the transport of fluids on and/or in and/or along the membrane layer is achieved.
- the membrane layer advantageously comprises and/or consists of: cellulose, in particular cellulose nitrate (nitrocellulose) and/or cellulose acetate, and/or polysulfone, in particular polyethersulfone (PESU), dextran polymers and/or a material of similar nature and/or similar properties, in particular essentially sponge-like materials and/or materials which enable lateral flow of fluids.
- cellulose in particular cellulose nitrate (nitrocellulose) and/or cellulose acetate
- polysulfone in particular polyethersulfone (PESU)
- dextran polymers and/or a material of similar nature and/or similar properties, in particular essentially sponge-like materials and/or materials which enable lateral flow of fluids.
- a material with a high protein-binding capacity is particularly advantageous for the analysis methods mentioned.
- the membrane layer has a thickness of about 50 ⁇ m to about 200 ⁇ m on.
- the carrier film preferably comprises a carrier material with a silicone coating, more preferably siliconized paper.
- a silicone coating or a similar coating enables in particular an advantageous detachment of the carrier film from the supporting layer, in particular a substantially non-destructive detachment of the membrane film from the carrier material.
- the carrier film has a thickness of about 100 ⁇ m to about 300 ⁇ m, more preferably about 120 ⁇ m to about 200 ⁇ m, in particular about 150 ⁇ m.
- the supporting layer of the membrane film is preferably detachably coupled to the carrier film by means of an adhesive.
- detachably coupled means the possibility of detaching essentially without the influence of heat and/or solvents.
- detachable coupling describes the possibility of detaching two layers that are detachably coupled to one another, for example using tweezers or a similar tool, in a substantially non-destructive manner.
- a stack of sticky notes includes a plurality of sticky notes releasably coupled together.
- the membrane layer of the membrane foil is coupled to the supporting layer of the membrane foil by means of an adhesive.
- the coupling of the membrane layer to the support layer has, in particular, increased strength and/or durability.
- the connection and/or coupling of the membrane layer to the supporting layer is preferably more resistant than the connection and/or coupling of the supporting layer to the carrier film, preferably by a factor of 5, more preferably by a factor of 10 or higher.
- the coupling between membrane layer and backing layer is substantial formed non-detachable, ie that a substantially non-destructive separation of the membrane layer and the support layer and / or detachment of a layer of the membrane film is not possible.
- This is advantageous because, when detaching and/or decoupling a membrane element from the product, accidental and/or undesired detachment and/or decoupling of the membrane layer from the support layer is prevented, or at least made more difficult.
- This is preferably achieved by a lower level of adhesion of the adhesive to the carrier film in comparison to the supporting layer and/or membrane layer.
- the carrier film can have a release agent and/or a coating that reduces the adhesion of the adhesive, such as silicone, for example.
- the adhesive for releasably coupling the backing layer to the carrier film and/or for coupling the membrane layer to the backing layer preferably comprises a pressure-sensitive adhesive and/or hot-melt adhesive.
- Pressure-sensitive adhesives are generally essentially permanently sticky and adhesive parts coupled and/or connected thereto can be decoupled and/or separated from one another essentially without residue and/or non-destructively.
- a pressure-sensitive adhesive dispersion and/or a pressure-sensitive hot-melt adhesive is particularly preferred.
- the adhesive is at least slightly hydrophobic, i.e. it avoids water and/or does not mix with fluids, in particular water, and/or does not absorb them. This is particularly advantageous since influencing of the fluid to be tested is prevented, or at least reduced.
- the adhesive, in particular the pressure-sensitive adhesive is free from volatile surfactants and/or alcohol.
- hot-melt adhesives enable fast and reliable coupling and/or joining of adhesive parts.
- hot-melt adhesives generally have high chemical resistance, so that the fluids applied to the membrane elements are prevented from being influenced, but at least this is prevented reduced, will.
- the adhesive properties of some hot-melt adhesives can also be reduced by the action of heat, so that the adhesive parts can be detached essentially non-destructively.
- Hot-melt adhesive is particularly advantageous for coupling the support layer to the membrane layer, since these layers do not necessarily have to be detachable and/or decoupleable from one another.
- the adhesive has a layer thickness of about 8 ⁇ m to about 20 ⁇ m, preferably from about 9 ⁇ m to about 14 ⁇ m, in particular about 10 ⁇ m.
- the detachable and/or detachable membrane elements of the product preferably each comprise at least one area of the membrane layer, a corresponding and/or coupled area of the support layer, and at least part of the adhesive which is provided for coupling these areas of the membrane layer to the support layer.
- the membrane elements include at least part of the adhesive that is provided for coupling the backing layer to the carrier film. This is particularly advantageous since it enables the membrane elements to be detachably coupled and/or glued into an analysis device in order to achieve a secure fit of the membrane elements.
- a membrane element is advantageously spaced along at least a part of its outer circumference from one or more other membrane elements and/or from at least one other area of the membrane film of the product.
- the membrane elements are preferably designed to be essentially discrete.
- the membrane elements are preferably formed by ablating and/or severing and/or melting a portion of the membrane layer and the support layer. More preferably, a membrane element has an essentially continuous and/or uninterrupted gap on its outer circumference to an adjacent membrane element and/or to the membrane element surrounding membrane film of the product. Alternatively and/or additionally, the outer circumference of a membrane element can be perforated at least in regions, ie provided with a large number of holes, which also enables easy detachment and/or decoupling of the membrane element from the product.
- Defining and/or forming and/or shaping the membrane elements by means of laser cutting, i.e. removing and/or severing and/or melting the membrane layer and the supporting layer by means of laser radiation, is particularly advantageous in this context.
- the power, wavelength, pulse energy and/or pulse duration of the laser radiation can be adjusted accordingly.
- a machining and/or chemical process can be used.
- the membrane elements are shaped and/or designed and/or defined in such a way that they have one or more flow lines, for example by removing the membrane layer and the support layer in a central area of the membrane element, so that the lateral areas of a membrane element are separated from one another.
- the membrane elements advantageously have an at least partially structured surface, which was preferably produced by at least partially and/or regionally removing the membrane layer.
- the membrane elements can have one or more structures in the membrane layer.
- a structure preferably forms one or more flow lines, in particular for conducting a fluid and/or controlling a fluid flow.
- different fluid paths can essentially be delimited from one another, in particular in order to prevent or at least reduce any influence between the fluid paths.
- the shape of the membrane elements can be formed, for example, by removing and/or cutting through the membrane film, consisting of at least the membrane layer and the supporting layer.
- one or more structures can be provided and/or formed in the membrane layer of the membrane elements, for example by removing and/or severing at least part of the thickness of the membrane layer.
- multiple membrane elements have substantially identical shapes and/or structures.
- one or more membrane elements can have different shapes and/or structures.
- the product provides different membrane elements, with the different membrane elements being required, for example, in successive process steps and/or having to be inserted into different test cassettes or analysis devices.
- different membrane elements can be arranged in groups and/or in a repetitive arrangement in and/or on the product.
- a membrane element advantageously comprises one or more mixing and/or reaction zones and/or one or more application zones, which are preferably formed by one or more structures.
- two or more fluids can be brought together in a mixing and/or reaction zone in order to mix and/or react with one another.
- a mixing and/or reaction zone can also contain a substance which reacts with one or more fluids. Incorporating and/or arranging and/or fixing DNA, RNA and/or proteins (for example by means of a “dispenser” and/or “mocker”) is particularly preferred.
- a substance can be introduced into a mixing and/or reaction zone in some other way, for example by dripping it on with a pipette.
- An application zone can in particular be an area on the membrane layer into which a fluid is applied, with the fluid preferably being distributed from the application zone at least in regions in the membrane layer and/or over the surface of the membrane element (lateral flow).
- the membrane elements can have essentially straight lines and/or at least partially curved and/or bent lines for conducting a fluid.
- a fixed flow rate of a fluid along a flow line correspondingly different structures can be provided and/or areas of the membrane elements can be shaped and/or designed accordingly.
- the formed and/or shaped flow lines and/or structures can in particular influence and/or control the microfluidic behavior of fluids on and/or in the membrane layer.
- the product can also have an essentially continuous perforation, whereby, for example, an advantageous provision of the membrane elements can be achieved by conveying the product in a dispenser.
- a corresponding counterpart can be present in a test cassette and/or in an analysis device, which enables accurate positioning and/or insertion.
- Another aspect relates to a method for manufacturing a product for providing membrane elements, in particular a product according to the first aspect of the present invention, comprising the steps of: providing a backing layer; detachable coupling of a carrier film to a first side of the support layer, in particular by means of a pressure-sensitive and/or hot-melt adhesive; Coupling a membrane layer to a second side of the support layer, in particular by means of a pressure-sensitive and/or hot-melt adhesive; Forming a plurality of membrane elements by at least partially removing the support layer and/or the membrane layer.
- Membrane layer and supporting layer are preferably coupled to one another in an essentially inseparable manner, ie the coupling essentially cannot take place without at least partially destroying at least one of the layers.
- the manufacturing method firstly comprises providing a support layer, for example a thin PET film, and coupling a carrier film, for example siliconized paper, to one side of the support layer. More preferably, the method comprises coupling a membrane layer, for example comprising nitrocellulose, to the opposite side of the backing layer. More preferably, the method then includes forming a plurality of membrane elements in the membrane film (membrane layer and support layer). The membrane elements are preferably formed by ablating and/or severing and/or melting a portion of the membrane layer and the support layer.
- Defining and/or forming and/or shaping the membrane elements by means of laser cutting is particularly advantageous in this context, i.e. removing and/or severing and/or melting a region of the membrane layer and a corresponding region of the supporting layer by means of laser radiation.
- power, wavelength, pulse energy and/or pulse duration can be adjusted accordingly.
- a machining and/or chemical process can be used.
- the method may include the steps of: forming a A membrane sheet comprising: providing a backing layer and a membrane layer; and coupling the backing layer to the membrane layer; releasably coupling the backing layer of the membrane sheet to a backing sheet; Forming a plurality of membrane elements of the membrane foil by at least partially removing the support layer and the membrane layer (membrane foil).
- the order of the process steps may vary.
- the membrane elements are preferably formed and/or shaped after the membrane layer, the supporting layer and the carrier film have been coupled, so that the formed and/or shaped membrane elements are fixed and/or supported by the carrier film.
- the method further comprises the step: structuring of the membrane elements by removing at least part of the membrane layer of the membrane elements and/or at least one area of the membrane foil.
- At least part of the membrane elements can be structured in particular before the membrane layer is coupled to the supporting layer. This has the advantage that the integrity of the support layer is not affected by the structuring.
- structuring can take place after the membrane layer has been coupled to the carrier film. This has the advantage that the membrane film is additionally reinforced and/or stabilized by the carrier film.
- the forming and/or shaping and/or structuring of the membrane elements takes place by means of laser cutting.
- the method also includes one or more of the following steps:
- the strength and/or durability and/or resistance of the coupling between the membrane layer and the supporting layer is preferably higher, in particular by a factor of more than 5, than between the supporting layer and the carrier film. In other words: a higher force is required to separate and/or detach the membrane layer from the supporting layer, in particular by a factor greater than 5, than to separate and/or detach the supporting layer from the carrier film.
- Adhesive is preferably applied at least in regions to one or more sides of the support layer and/or the membrane layer and/or the carrier film, preferably with a layer thickness of about 8 ⁇ m to about 20 ⁇ m, in particular about 10 ⁇ m.
- the adhesive advantageously comprises a pressure-sensitive adhesive and/or hot-melt adhesive.
- the adhesive is sprayed on and/or brushed on and/or applied in an essentially uniform manner in another way.
- Figure 1 shows an exemplary embodiment of a product for
- Figure 2 shows an exemplary embodiment of the product for
- FIG. 3 shows exemplary structures 16 and gaps 24 and an exemplary arrangement of the components of a preferred embodiment of the product 1;
- FIG. 4a shows an exemplary method for preparing a product for preparing a plurality of membrane elements
- FIG. 4b shows an alternative, exemplary method for preparing a product for providing a plurality of membrane elements
- Figure 5 shows membrane elements with exemplary structures provided by a product
- FIG. 6 shows further exemplary membrane elements
- FIG. 7 shows a section of an exemplary, structured membrane element.
- FIG. 1 shows an exemplary embodiment of a product 1 for providing a plurality of membrane elements 2, one of the membrane elements 2 shown being detached from the product 1 and/or decoupled.
- the membrane elements 2 are designed in particular to be placed in an analysis device and/or in a designated section of a test cassette.
- FIG. 1 shows a section of a product 1 which has an essentially elongate and/or band-like shape.
- the product 1 preferably comprises at least one carrier film 8 and a (preferably multilayer) membrane film which has at least one support layer 6 and one membrane layer 4 .
- the membrane layer 4 comprises a porous, in particular a microporous, and/or an absorbent (in particular highly absorbent) material, which in particular has a sponge structure and is suitable for absorbing and/or absorbing fluids.
- the membrane layer preferably has a, in particular nominal, mean and/or maximum, pore size of about 5 ⁇ m or about 10 ⁇ m, which in particular enables a capillary effect of the membrane layer 4 to transport fluids on and/or in and/or along the Membrane layer is made possible.
- the membrane layer 4 has in particular a thickness of approximately 50 ⁇ m to approximately 200 ⁇ m.
- the membrane layer 4 comprises and/or consists of: cellulose, in particular cellulose nitrate (nitrocellulose) and/or cellulose acetate, and/or polysulfone, in particular polyethersulfone (PESU), dextran polymers and/or a material of a similar nature and/or the like Properties, in particular essentially sponge-like materials and/or materials, which enable lateral flow of fluids.
- the carrier film 8 has a carrier material with a silicone coating, such as siliconized paper, so that the carrier film 8 can be detached from the supporting layer 6 in a substantially easy manner, in particular in a manner that is essentially non-destructive.
- the carrier foil preferably has a material thickness of about 100 ⁇ m to about 300 ⁇ m.
- the support layer 6 preferably has a thickness of about 10 ⁇ m to about 20 ⁇ m and consists, for example, of: PET (polyethylene terephthalate), PE (polyethylene), EVA (ethylene-vinyl acetate copolymer), PP (polypropylene), PVC (polyvinyl chloride), EVOH (ethylene vinyl alcohol copolymer), PA (polyamide) and/or a similar material that has high flexibility and durability.
- PET polyethylene terephthalate
- PE polyethylene
- EVA ethylene-vinyl acetate copolymer
- PP polypropylene
- PVC polyvinyl chloride
- EVOH ethylene vinyl alcohol copolymer
- PA polyamide
- the carrier film 8 and the membrane film are arranged on top of one another at least in regions, with the support layer 6 of the membrane film being detachably coupled and/or connected to the carrier film 8 .
- the membrane film is preferably detachably coupled to the carrier film 8 so that the membrane film, in particular the membrane elements 2, can be detached or decoupled from the carrier film 8 essentially non-destructively—for example using tweezers.
- the membrane film is detachably coupled to the carrier film 8 by means of an adhesive which has a pressure-sensitive adhesive and/or a hot-melt adhesive.
- the portion of the product 1 shown comprises a plurality (e.g. three) essentially discretely designed membrane elements 2.
- the membrane elements 2 in this example are designed and/or shaped essentially identically, i.e. they have an essentially identical shape. Alternatively and/or additionally, one or more membrane elements 2 can have different shapes.
- the membrane layer 4 of the membrane elements 2 is delimited by a gap 24 along its outer circumference from a membrane layer 4 ′′, which is not covered by a membrane element 2 .
- a gap 24 can, in particular, be removed and/or removed in certain areas Melting at least the membrane film, ie the membrane layer 4 and the support layer 6, are generated. Laser cutting is particularly suitable for this.
- the membrane elements 2 shown are structured essentially identically: the membrane elements 2 comprise one or more (e.g. ten) flow lines 18, which are formed in the membrane layer 4 of the membrane elements 2 and are suitable for guiding a fluid applied to at least one application zone 22 away from it.
- the flow lines 18 are defined and/or formed by one or more structures 16 and/or preferably spaced apart from one another, the one or more structures 16 being in particular created by (at least partially) ablating and/or removing and/or melting the membrane layer 4, for example by Laser cutting, are generated.
- the membrane layer 4 and the adhesive 10 which at least partially connects the membrane layer 4 to the support layer 6, have been removed along the structures 16, so that the support layer 6 remains there and is particularly visible .
- FIG. 2 shows an exemplary embodiment of the product 1 for providing a plurality of membrane elements 2, the membrane layer 4" and the supporting layer 6" of the membrane foil, which are not covered by any membrane element 2 and/or which are not part of a membrane element 2, of of the carrier film 8 of the product 1 has been detached.
- the membrane elements 2 are not formed over the entire surface of the membrane film of the product 1.
- the membrane layer 4′′ and the supporting layer 6′′ between the membrane elements 2 preferably have essentially the same properties or properties as the membrane layer 4 or the supporting layer 6 of the membrane elements 2 .
- the membrane layer 4" and/or the Supporting layer 6” can also be separated (removed or decoupled), as shown in FIG.
- Figure 3 shows exemplary structures 16 and gaps 24 and an exemplary arrangement of the components of a preferred embodiment of the product 1.
- the product 1 shown comprises at least one carrier film 8 which is detachably coupled to a support layer 6 by means of adhesive 10 .
- the adhesive 10 preferably comprises a pressure-sensitive adhesive and/or a hot-melt adhesive.
- the carrier film 8 has a material thickness of preferably about 100 ⁇ m to about 300 ⁇ m, for example about 150 ⁇ m.
- the carrier film 8 preferably comprises a carrier material with a silicone coating, more preferably siliconized paper.
- the carrier film 8 can have a different material, preferably a material with similar non-stick properties, whereby a detachable coupling is achieved and the support layer 6 can be detached from the carrier film 8 essentially non-destructively.
- the support layer 6 has a material thickness of preferably about 10 ⁇ m to about 20 ⁇ m, for example about 12 ⁇ m.
- the support layer 6 preferably includes and/or consists of: PET (polyethylene terephthalate), PE (polyethylene), EVA (ethylene vinyl acetate copolymer), PP (polypropylene), PVC (polyvinyl chloride), EVOH (ethylene vinyl alcohol copolymer). ), PA (polyamide) and/or a similar material.
- PET polyethylene terephthalate
- PE polyethylene
- EVA ethylene vinyl acetate copolymer
- PP polypropylene
- PVC polyvinyl chloride
- EVOH ethylene vinyl alcohol copolymer
- PA polyamide
- the support layer 6 is preferably coupled and/or connected to the membrane layer 4 by adhesive 10 , the adhesive 10 being essentially identical to or different from the adhesive 10 provided between the support layer 6 and the carrier film 8 .
- the thickness of the different adhesive layers 10 can be substantially identical or different.
- the membrane layer 4 has a material thickness of preferably about 50 ⁇ m to about 200 ⁇ m.
- the membrane layer 4 preferably comprises a porous, in particular a microporous, and/or an absorbent, in particular highly absorbent, material such as: cellulose, in particular cellulose nitrate (nitrocellulose) and/or cellulose acetate, and/or polysulfone, in particular polyether sulfone (PESU), dextran polymers and/or a material of similar nature and/or properties.
- the adhesive 10 for releasably coupling the support layer 6 to the carrier film 8 and/or for the preferably essentially non-releasable coupling of the membrane layer 4 to the support layer 6 comprises a pressure-sensitive adhesive and/or hot-melt adhesive.
- the coupling between the membrane layer 4 and the supporting layer 6 preferably has a higher adhesion and/or resistance force compared to the coupling between the supporting layer 6 and the carrier film 8 .
- adhesives 10 which enable coupled and/or connected adhesive parts to be decoupled and/or separated from one another essentially without residue and/or non-destructively.
- the adhesive 10 is at least slightly hydrophobic, i.e. it avoids water and/or does not mix with fluids, in particular water.
- the adhesion of the coupling and/or connection between the support layer 6 and the membrane layer 4 is preferably higher and/or more resistant than between the support layer 6 and the carrier film 8. This can be achieved, for example, by using correspondingly different adhesives 10 and/or by using appropriately selected materials and / or a treatment of the membrane layer 4 and the carrier film 8. In particular when using a siliconized paper as Carrier film 8, a comparatively low level of adhesion between the membrane film and the carrier film 8 can be achieved, so that the membrane film can be easily detached from the carrier film 8.
- the shown portion of the product 1 of Figure 3 comprises a plurality (e.g. five) membrane elements 2 which are essentially discrete, i.e. essentially delimited from one another.
- the membrane elements 2 are separated and/or spaced apart from one another by gaps 24a-24d. Therefore, each individual membrane element 2 can be detached or removed from the carrier film 8 independently of other membrane elements 2 .
- gap 24a is configured differently from gaps 24b-24d: gap 24a extends through the entire thickness of the membrane sheet, i.e., through membrane layer 4, backing layer 6, and adhesive 10 connecting membrane layer 4 and backing layer 6. Forming a membrane element 2 through such a gap 24a makes it possible, in particular, to decouple the membrane element 2e from the product 1 .
- the membrane element 2e comprises the membrane foil (in particular the membrane layer 4, the supporting layer 6 and the adhesive 10 located between them). This is particularly advantageous if the detached membrane element 2e is to have essentially no adhesive 10 on the outside of the support layer 6, for example in order to facilitate handling of the membrane element 2e.
- a gap 24b-24d can be created by ablating and/or removing and/or melting the membrane layer 4, the support layer 6 and the adhesive layer(s) 10, which connect the membrane layer 4 to the support layer 6 or the support layer 6 to the carrier film 8. be generated.
- This is particularly advantageous in order to obtain the detached membrane element 2d, which has adhesive 10 at least in regions on a side opposite the membrane layer 4.
- the membrane elements 2d detached or decoupled in this way have adhesive 10 at least in regions on the side detached from the carrier film 8 .
- Such a membrane element 2d is for example advantageous in order to achieve a secure hold of the membrane element 2d in an analysis device.
- a secure positioning of the membrane elements 2 in an analysis device and/or a test cassette can be achieved since the membrane element 2d in the analysis device can be glued in place by the adhesive 10 on the side of the support layer 6 and/or can be detachably coupled to it.
- FIG. 3 also shows a cross section of a membrane element 2c, which has a membrane layer 4 structured by way of example.
- the membrane element 2c comprises in particular two flow lines 18a and 18b formed by structures 16a-16c in the membrane layer 4.
- the formation and/or creation of one or more structures 16 preferably takes place by ablating and/or separating and/or removing and/or melting the membrane layer 4 and, optionally, the adhesive layer 10 of the membrane film. Laser cutting is particularly suitable for this, as explained in more detail with reference to FIGS. 4a and 4b.
- the flow lines 18a and 18b are designed in particular to conduct a fluid along and/or in the membrane layer 4 .
- the membrane layer 4, which forms the flow lines 18a and 18b, is essentially separated and/or delimited from the respectively adjacent membrane layers 4'a and 4'b of the membrane element 2c by the structures 16. In particular, the membrane layers 4'a and 4'b do not come into contact with the fluid conducted by the flow lines 18a and 18b.
- a structure 16 preferably extends at least over part of the thickness of the membrane layer 4, more preferably over essentially the entire thickness of the membrane layer 4 (see structures 16a and 16b of the membrane element 2c). Alternatively, a structure 16 extends through membrane layer 4 and through at least part of the thickness of adhesive layer 10 connecting membrane layer 4 and backing layer 6 (see structure 16c).
- FIG. 4a shows an exemplary method for manufacturing a product for providing a plurality of membrane elements 2 or a device suitable for carrying out the method for manufacturing the product.
- the support layer 6 is preferably provided first, for example from a roll.
- An adhesive 10 is at least partially applied and/or sprayed onto one side of the supporting layer 6 by at least one adhesive device 12 or one side of the supporting layer 6 is at least partially wetted with adhesive 10 . Preference is given to applying an essentially uniform and/or continuous layer of adhesive 10 using the at least one adhesive device 12.
- the carrier film 8 is then preferably unrolled from a roll and placed on the side of the support layer 6 that has the adhesive 10 and/or coupled and/or connected to it.
- Adhesive 10 is more preferably applied to the side of supporting layer 6 opposite carrier film 8 . This is in particular the same adhesive 10 as provided between the supporting layer 6 and the carrier film 8 . The membrane layer 4 is then placed on the supporting layer 6 or coupled to or connected to it.
- a plurality of membrane elements 2 is preferably formed and/or shaped and/or structured, for example by one or more removal devices 14.
- a removal device 14 is set up in particular to remove at least a part of the product 1, in particular the membrane foil, at least in regions and/or or to remove.
- the removal device 14 is designed to selectively form the gaps 24 shown in FIG. 3 in the membrane layer 4, the support layer 6 and the layer(s) of adhesive 10.
- the removal device 14 is designed in particular to selectively form one or more structure(s) 16 in the membrane element 2 (in particular the membrane layer 4).
- a removal device 14 can have one or more means for separating and/or melting of at least part of the membrane layer 4 and/or the adhesive 10 and/or the support layer 6.
- a removal device 14 preferably comprises one or more means for laser cutting in order to form and/or shape the membrane elements 2 and/or to form one or more structures 16 in at least the membrane layer 4 of the membrane elements 2 .
- a removal device 14 can include one or more drilling and/or milling tools for shaping and/or structuring the membrane elements 2 .
- the product 1 or the individual steps of the method are advantageously produced essentially continuously and/or in parallel, so that large quantities of the product 1 can be produced in a time-efficient manner.
- the device can preferably be provided with one or more devices for tempering, supporting, pressing and/or controlling the product 1 and/or its components (not shown), in particular in order to obtain or ensure an improved quality of the product.
- FIG. 4b shows an alternative exemplary method for producing a product for providing a plurality of membrane elements.
- the membrane film is first produced by coupling the membrane layer 4 to the supporting layer 6 by means of adhesive 10.
- the carrier film 8 is then detachably coupled to the supporting layer 6 of the membrane film by means of adhesive and fed to the removal device 14 for shaping and/or forming and/or structuring the membrane elements 2.
- the detachable coupling enables simple and/or essentially non-destructive separation of the Supporting layer 6 from the carrier film 8.
- at least one removal device 14 can be arranged and/or positioned in such a way that it structures the membrane layer 4 before the carrier film 8 is fed in and/or coupled.
- FIG. 5 shows membrane elements 2 detached from a product 1 with exemplary shapes and/or structures.
- the structured membrane element 2 in Figure 5 a) comprises at one end in the membrane layer 4 an application zone 22 which is particularly suitable for applying a fluid to be tested and from which a plurality (e.g. four) flow lines 18 each having a plurality (e.g. three) successive mixing and/or reaction zones 20, the width of the flow lines 18 being less than the width of the membrane element 2.
- a plurality e.g. four
- flow lines 18 each having a plurality (e.g. three) successive mixing and/or reaction zones 20, the width of the flow lines 18 being less than the width of the membrane element 2.
- the membrane element 2 in FIG. 5a has a structure 16 at the end opposite the application zone 22, which forms a part, for example approximately one fifth to approximately one quarter, of the surface of the membrane element 2.
- the membrane layer 4' has been removed and/or removed essentially over the entire area.
- Such a configuration is particularly advantageous in order to achieve improved surface handling of the membrane element 2 .
- the membrane element 2 can be gripped at this end with tweezers without affecting the membrane layer 4 required for carrying out the test.
- the membrane element 2 can also be inscribed in this area.
- the application zone 22, the flow lines 18 and the mixing and/or reaction zones 20 are preferably formed and/or formed by structures 16 and/or gaps 24.
- the membrane element 2 in Figure 5 a) preferably comprises a plurality of essentially isolated membrane layers 4', which are essentially delimited and/or spaced apart from the application zone 22, the flow lines 18 and the mixing and/or reaction zones 20, so that a fluid applied to the application zone 22 essentially cannot reach this isolated membrane layer 4'.
- these isolated membrane layers 4' are arranged between the flow lines 18 and space them apart from one another.
- Such a configuration of the membrane elements 2 is particularly advantageous since less processing effort is required for removing and/or separating and/or melting the membrane layer 4, for example using a removal device 14.
- the presence of one or more isolated membrane layers 4' enables an optical reference with regard to the distribution of the fluid in the flow lines 18.
- the structured membrane element 2 according to FIG. 5b) comprises at one end in the membrane layer 4 an application zone 22 for applying a fluid, from which a plurality (ten in the example shown) of flow lines 18 extend.
- the flow lines 18 are essentially fan-shaped in a first area of the membrane element 2 and are arranged essentially parallel to one another in a second area.
- the structures 16 of the membrane element 2 of FIG. 5b), which form the flow lines 18, extend over the entire distance between the respective flow lines 18 and space them apart from one another.
- Such a configuration is particularly advantageous in order to achieve improved delimitation of the flux lines 18 from one another.
- the membrane element 2 of Figure 5 b) further comprises an insulated membrane layer 4 'at the opposite end of the membrane element 22 of the application zone 22. As with the membrane element 2 of Figure 5 a), this allows in particular an improved Flandhandling of the membrane element 2. However, a reduced amount of work is required to produce the membrane element 2 of FIG. 5 b), since the isolated membrane layer 4′ is not removed and/or removed.
- the detached membrane elements 2 of FIGS. 5a) and 5b) can have adhesive at least in some areas on their underside (not shown), for example to enable advantageous fixing of the membrane elements 2 in an analysis device.
- FIG. 6 shows exemplary structures of membrane elements, with the structures each forming a plurality (e.g. five or ten) of flow lines 18 which each extend from application zones 22 .
- the flow lines 18 each extend in regions essentially in a fan shape, i.e. they extend away from the application zones 22 at different angles and/or at a distance from one another, with the angles of the outer flow lines 18 (e.g. approximately 135°) being greater in particular than those of the middle flow line (e.g. about 90°).
- the membrane element 2 of Figure 6 a) is essentially axially symmetrical and comprises two opposite application zones 22 and several (e.g. five) mixing and/or reaction zones 20, which have an essentially circular shape and are arranged essentially centrally between the application zones 22 .
- the flow lines 18 extend from an application zone 22 in an essentially fan-shaped manner to a respective mixing and/or reaction zone 20. This configuration is particularly advantageous if two fluids are applied separately to the membrane element 2 and mixed with one another in a specific area of the membrane layer 4 and/or should react with each other.
- the membrane element 6b) is not embodied symmetrically.
- the membrane element 2 of FIG. 6b) comprises a single fork and/or branch 26 in a flow line 18.
- a fluid which is applied to the lower application zone 22 was applied and flows along the corresponding flow line 18, divided into two flow lines 18, so that the fluid is passed on to the corresponding mixing and/or reaction zones 20 in a lower concentration.
- a membrane element 2 can comprise a plurality of such and/or similar forks 26 for (re)routing a fluid.
- the membrane element 2 of FIG. 6 b) preferably forms one or more further mixing and/or reaction zones 20 along a flow line 18, into which preferably DNA, RNA and/or proteins can be introduced - for example by means of a "dispenser” and/or “Mocker". This serves in particular to test the fluid before it reaches the mixing and/or reaction zones 20, which are arranged essentially centrally between the application zones 22 / or reaction zones 20 are tested and/or checked.
- the membrane elements 2 of FIGS. 6 a) and 6 b) also have essentially isolated membrane layers 4', which are present in the corners and between the flow lines 18. Alternatively, the isolated membrane layers 4' can be removed so that the support layer 6 underneath comes to light.
- FIG. 7 shows a section of an exemplary, structured membrane element 2 which has a plurality (e.g. six) flow lines 18 in the membrane layer 4.
- the flow lines 18 are arranged essentially parallel and extend essentially identically and in a meandering manner over the membrane element 2.
- Such a configuration enables in particular an improved capillary effect of the flow lines 18 for advantageously conducting fluids along them.
- Each of the flow lines 18 preferably includes a mixing and/or reaction zone 20 in which, for example, DNA, RNA and/or proteins have been introduced. if When a fluid to be tested reaches a mixing and/or reaction zone 20 containing DNA, RNA and/or proteins, it can react with the DNA, RNA and/or the protein. The reaction preferably results in a visible change in color in at least part of the mixing and/or reaction zone 20, which can be detected in particular with an analysis device. If there is no reaction, the fluid being tested is likely to have no or too low a concentration of the substance required for the reaction, such as certain antibodies.
- the flow lines 18 of the membrane element 2 of Figure 7 are formed by structures 16, preferably by removing at least part of the thickness of the membrane layer 4. Alternatively and/or additionally, the flow lines 18 can be at least partially formed by forming a gap 24 in the membrane layer 4 and the support layer 6 be.
- the membrane element 2 further comprises a plurality (eg 4) isolated membrane layers 4 ′, which are not reached by a fluid guided by the flow lines 18 .
- the isolated membrane layers 4' are used in particular for improved surface handling and/or increased dimensional stability of the membrane element 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22731108.1A EP4351782A1 (de) | 2021-06-11 | 2022-05-23 | Produkt zum bereitstellen von membranelementen und herstellungsverfahren |
CN202280040481.1A CN117500599A (zh) | 2021-06-11 | 2022-05-23 | 用于提供膜元件的产品以及制备方法 |
JP2023575359A JP2024522577A (ja) | 2021-06-11 | 2022-05-23 | 膜エレメントを提供するための製品および製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021003009.5A DE102021003009A1 (de) | 2021-06-11 | 2021-06-11 | Produkt zum Bereitstellen von Membranelementen und Herstellungsverfahren |
DE102021003009.5 | 2021-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022258354A1 true WO2022258354A1 (de) | 2022-12-15 |
Family
ID=82100629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/063842 WO2022258354A1 (de) | 2021-06-11 | 2022-05-23 | Produkt zum bereitstellen von membranelementen und herstellungsverfahren |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4351782A1 (de) |
JP (1) | JP2024522577A (de) |
CN (1) | CN117500599A (de) |
DE (1) | DE102021003009A1 (de) |
WO (1) | WO2022258354A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2907573A1 (de) * | 2014-02-14 | 2015-08-19 | Roche Diagnostics GmbH | Verfahren und Herstellungsvorrichtung zur Herstellung von mindestens einer analytischen Vorrichtung |
WO2017102744A1 (de) * | 2015-12-15 | 2017-06-22 | Ovd Kinegram Ag | Verfahren zur herstellung eines sicherheitselements sowie transferfolie |
DE102019112254A1 (de) * | 2019-05-10 | 2020-11-12 | Leonhard Kurz Stiftung & Co. Kg | Mikrofluidische Anordnung, Verfahren zu deren Herstellung und Messsystem umfassend die mikrofluidische Anordnung sowie Verwendung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080269707A1 (en) | 2007-04-30 | 2008-10-30 | Kimberly-Clark Worldwide, Inc. | Lateral Flow Device for Attachment to an Absorbent Article |
EP3171169B1 (de) | 2015-11-19 | 2017-10-04 | Sartorius Stedim Biotech GmbH | Gemusterte membranstruktur |
-
2021
- 2021-06-11 DE DE102021003009.5A patent/DE102021003009A1/de active Pending
-
2022
- 2022-05-23 CN CN202280040481.1A patent/CN117500599A/zh active Pending
- 2022-05-23 WO PCT/EP2022/063842 patent/WO2022258354A1/de active Application Filing
- 2022-05-23 JP JP2023575359A patent/JP2024522577A/ja active Pending
- 2022-05-23 EP EP22731108.1A patent/EP4351782A1/de active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2907573A1 (de) * | 2014-02-14 | 2015-08-19 | Roche Diagnostics GmbH | Verfahren und Herstellungsvorrichtung zur Herstellung von mindestens einer analytischen Vorrichtung |
WO2017102744A1 (de) * | 2015-12-15 | 2017-06-22 | Ovd Kinegram Ag | Verfahren zur herstellung eines sicherheitselements sowie transferfolie |
DE102019112254A1 (de) * | 2019-05-10 | 2020-11-12 | Leonhard Kurz Stiftung & Co. Kg | Mikrofluidische Anordnung, Verfahren zu deren Herstellung und Messsystem umfassend die mikrofluidische Anordnung sowie Verwendung |
Also Published As
Publication number | Publication date |
---|---|
CN117500599A (zh) | 2024-02-02 |
JP2024522577A (ja) | 2024-06-21 |
EP4351782A1 (de) | 2024-04-17 |
DE102021003009A1 (de) | 2022-12-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0297389B1 (de) | Diagnostischer Testträger und Verfahren zu dessen Herstellung | |
DE602005005485T2 (de) | Assayvorrichtung und verfahren mit gesteuertem fluss | |
DE69012013T2 (de) | Mehrfachlochfiltergerät. | |
EP0571940B1 (de) | Testträger zur Analytbestimmung sowie Verfahren zu dessen Herstellung | |
DE69535720T2 (de) | Faserstoffbahn und verfahren zur deren herstellung | |
EP1311655B1 (de) | Vorrichtung und verfahren zum elektrischen kontaktieren von in einer flüssigkeit in suspension befindlichen biologischen zellen | |
EP0208952B1 (de) | Testträger | |
EP1522343B1 (de) | Analytisches Testelement umfassend ein hydrophiles Netzwerk zur Bildung eines Kapillarkanals, dessen Verwendung und Verfahren zur Bestimmung eines Analyten in einer Flüssigkeit | |
DE3530993A1 (de) | Teststreifen mit festlegbarer probenaufnahmekapazitaet | |
DE2854342A1 (de) | Vielschichtiges testmittel zum nachweis einer komponente in einer fluessigen probe und verfahren zu dessen anwendung | |
EP0750196B1 (de) | Mehrschichtiges Analysenelement zur Bestimmung eines Analyten in einer Flüssigkeit | |
EP0995992A2 (de) | Spreitschichten, Netzmittel zu ihrer Herstellung und deren Verwendung in Teststreifen | |
DE19849000A1 (de) | Funktionsschichten mit hoher Präzision, Verfahren zu ihrer Herstellung und Teststreifen enthaltend diese Funktionsschichten | |
EP1315553A1 (de) | Vorrichtung und verfahren zur separation von ungelösten bestandteilen aus biologischen flüssigkeiten | |
EP1309846B1 (de) | Trägervorrichtung für ein präparat zum separieren einzelner objekte aus dem präparat mittels laserstrahlung | |
EP0821235A2 (de) | Diagnostischer Testträger mit Kapillarspalt | |
EP4351782A1 (de) | Produkt zum bereitstellen von membranelementen und herstellungsverfahren | |
EP2162274B1 (de) | Verfahren zur herstellung eines analyseelementes und analyseelement | |
DE4234728A1 (de) | Verfahren für die Gewinnung und die Umpufferung und/oder Einengung von gelösten Makromolekülen eines Makromolekülegemisches | |
EP2576062B1 (de) | Flüssigkeitstransport- und analytische testvorrichtung | |
EP2585217B1 (de) | Vorrichtung und verfahren zur analyse einer kontaminierten oberfläche | |
EP3753634B1 (de) | Probenträger zur aufnahme von getrockneten blutbestandteilen und verfahren zur gewinnung eines membranelementes mit getrockneten blutbestandteilen | |
WO2003047756A2 (de) | Einrichtungen und verfahren zur verarbeitung biologischer oder chemischer substanzen oder deren substanzgemische | |
DE102021214853B3 (de) | Mehrkanal-Teststreifen und Herstellungsverfahren dafür | |
DE102006049560A1 (de) | Trägerelement und Verfahren zur Herstellung desselben |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22731108 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18566208 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2023575359 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280040481.1 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022731108 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022731108 Country of ref document: EP Effective date: 20240111 |