WO2024132786A1 - Cartouche de tube stratifié - Google Patents

Cartouche de tube stratifié Download PDF

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Publication number
WO2024132786A1
WO2024132786A1 PCT/EP2023/085623 EP2023085623W WO2024132786A1 WO 2024132786 A1 WO2024132786 A1 WO 2024132786A1 EP 2023085623 W EP2023085623 W EP 2023085623W WO 2024132786 A1 WO2024132786 A1 WO 2024132786A1
Authority
WO
WIPO (PCT)
Prior art keywords
cartridge
piston
laminated
head part
tube
Prior art date
Application number
PCT/EP2023/085623
Other languages
English (en)
Inventor
Tobias Bodenmüller
Original Assignee
Medmix Switzerland Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medmix Switzerland Ag filed Critical Medmix Switzerland Ag
Publication of WO2024132786A1 publication Critical patent/WO2024132786A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00583—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes the container for the material to be dispensed being deformable
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • B65D2203/10—Transponders

Definitions

  • the invention relates to a cartridge for a material to be dispensed comprising a laminated tube, and a piston, a cartridge assembly comprising at least two such cartridges, a dispenser comprising a receptacle for repeatedly receiving the such a cartridge, and a method of producing such a cartridge or cartridge assembly.
  • cartridges are frequently used to store liquid flowable, frequently pasty or viscous to highly viscous substances and to dispense them for the respective application as required.
  • examples for such substances are joint sealing compounds, compounds for chemical dowels or chemical anchors, adhesives, pastes or impression materials in the dental sector.
  • Cartridges filled with a material to be dispensed are usually designed for a oneway use. Due to the nature of most filling materials, in particular adhesives, said material will usually never be entirely dispensed from the cartridge and residues will be left over within the cartridge. At present, it is therefore common practice to dispose of a cartridge and/or a dispenser tip used only once. This causes considerable waste associated with an increasing environmental burden.
  • a cartridge for a material to be dispensed comprising a laminated tube and a piston
  • the laminated tube comprising a solid head part having a dispensing tube outlet, and a laminated film forming a cartridge wall, with the film bounding a cartridge chamber for the material to be dispensed, extending at least partially in a longitudinal axis (A) of the cartridge, and having an unsealed lower end and a front end opposite to the lower end with regard to the longitudinal axis (A), the front end being sealingly and non-releasably connected to the head part, wherein the unsealed lower end comprises an opening defining an inner diameter of the laminated tube ; and the piston comprising a first end and a second end, the longitudinal axis (A) extending between the first end and the second end, the first end of the piston being closer to the head part of the of the laminated tube than the second end of the piston with regard to the longitudinal axis (A), and the
  • Laminated tubes are well known to the skilled person. Today, such tubes are produced worldwide by various manufacturers on a large scale. They are commonly used as a storage and dispensing means for diverse viscous filling materials from the cosmetic sector (such as skincare products, make-up, creams), pharmaceutical sector (such as medicinal creams or ointments), dental sector (such as tooth pastes, or whitenings), and industrial sector (such as dispensable silicones, or lubricants).
  • the productivity rate in such manufacturing processes may be 100 laminated tubes per minute or more, preferably 150 laminated tubes per minute or more, and more preferably 180 laminated tubes per minute or more. A productivity rate of up to 200 tubes per minute is also possible.
  • Such laminated tubes are formed from a solid head part connected to a laminated film.
  • the solid head part has an outlet part, i.e., tube outlet part, with a perforation (outlet) from which a material may be dispensed.
  • the outlet part may be closed by means of a lid, for example a lid having a thread part which may be screwed onto the outlet part of the laminated tube.
  • a lid may be useful in order to avoid spilling of the cartridge content during filling into the laminated tube.
  • said lid may be disconnected from the laminated tube, such as by unscrewing.
  • the solid head part is not flexible.
  • the laminated film forms the cartridge wall and comprises the material to be dispensed.
  • the front end of the laminated film is sealingly and non- releasably connected to the head part, i.e., there will be no relevant leakage of the cartridge contents during storage or use and that the front end of the laminated film will not detach from the solid head part during normal storage and/or use conditions.
  • the laminated tube of the present invention has an unsealed lower end, and is therefore also referred to as an unsealed laminated tube.
  • the unsealed laminated tube may be obtained during a common manufacturing method of a laminated tube as described above, wherein the sealing step of the laminated tube is omitted. Thereby, an unsealed laminated tube may be obtained directly from the manufacturer.
  • the laminated tube is obtained in a sealed manner from the manufacturer, i.e., wherein the lower end is sealed.
  • the lower end may be opened prior to using it for the herein described purpose for solving the above-mentioned problems. Opening of the sealed laminated tube may be performed by cutting or any other suitable method.
  • the unsealed laminated tube is obtained in an indirect manner.
  • the unsealed lower end has an opening defining an inner diameter of the cartridge wall. In other words, the inner diameter of the cartridge wall formed by the laminated film is at least substantially equal to the inner diameter of the opening.
  • the opening is large enough for efficiently filling of at least one material to be dispensed into the cartridge.
  • the unsealed laminated tube of the present invention is sealed with a piston.
  • a piston is introduced into the cartridge from the unsealed end of the laminated tube.
  • the outer diameter of the piston is at least substantially equal or slightly smaller than the inner diameter of the cartridge wall.
  • the piston may urge the cartridge content towards the outlet of the laminated tube (and not partially from the lower end of the laminated tube). Urging of the piston may be performed by means of a rack.
  • a cartridge assembly comprising at least two aforementioned cartridges, wherein each one of the at least two cartridges has a cap part mounted on the head part, with the cap part having an inner circumferential surface sealingly and releasably connected to an outer circumferential surface of the front end of the laminated film, the cap part comprising a connecting part for releasably connecting the cap part to another, a cap outlet configured to receive the material stored in the cartridge chamber and dispensed from the tube outlet for dispensing the material from the cap outlet.
  • the cap part is at least substantially hollow.
  • the cap part may be mounted on the head part of a laminated tube, wherein the laminated tube is obtained as such from the manufacturer, i.e., without further processing.
  • the cap part may be mounted onto the head part in such a way that the cartridge content may be dispensed from the cap outlet via the outlet of the laminated tube.
  • the cartridge content i.e., material
  • the cartridge content may first be pressed out of the tube outlet in order to be introduced into the at least substantially hollow cap part.
  • the material may be further urged out of the cap outlet.
  • the material may also spread inside the at least substantially hollow cap part, i.e., at least one part of the material is stuck in the cap part. It is therefore preferable that prior to mounting the cap part onto the head part, a part of the head part is cut orthogonally with regard to the longitudinal axis (A) of the cartridge. In particular, the entire outlet part of the laminated tube may be cut. Thereby, the outlet diameter may be enlarged. It is possible to also cut the shoulder part at the solid head part of the laminated tube in order to provide a tube outlet having an inner diameter at least substantially equal to that of the cartridge chamber. Hence, by increasing the outlet diameter of the laminated tube, it may be easier and faster to press the cartridge content out of the cap outlet.
  • Cutting of parts of the solid head part may further be advantageous in case the cap outlet is shifted along an axis orthogonal to the longitudinal axis (A), i.e., in case the cap outlet is not substantially above the tube outlet.
  • the cap part has a connecting part allowing the connection to another cap part mounted on another cartridge. Thereby, at least two cartridges having cap part mounted on the solid head parts of each cartridge may be connected together. This connection is releasable, i.e., may detach when intended to do so.
  • the connection part may be any kind of means to connect the cap parts. Nonlimiting examples thereof may be a snapping mount, a bayonet mount, or a Henkel click together mount.
  • the inner circumferential surface of the cap part is sealingly connected to the outer circumferential surface of the front end of the laminated tube, i.e., meaning that there will be no leakage of the cartridge contents during storage or use and that the cap part will not detach from the laminated tube during normal storage and/or use conditions.
  • This connection may be detachable in case the cap part is fastened to the head part, such as by pressing the cap part onto the cap part.
  • This connection may also be not detachable in case the cap part is non- releasably attached to the head part, e.g., by adhesion or welding.
  • a dispenser comprising a receptacle for repeatedly receiving the aforementioned cartridge or the aforementioned cartridge assembly
  • the dispenser comprises a rack moving the piston through the cartridge for urging the material stored inside the cartridge chamber towards the tube outlet for dispensing the material, and wherein the wall thickness of the cartridge is smaller than the wall thickness of the receptacle.
  • the dispenser has a rack which is configured to move the piston through the cartridge in order to urge the cartridge content out of the tube outlet.
  • the dispenser may be connected to a dispenser tip, e.g. by screwing together. Dispenser tips are well known to the skilled person.
  • the receptacle receives a cartridge repeatedly, i.e., the receptacle is reusable. Since the material to be dispensed is inside the cartridge, the surrounding receptacle may not be in direct contact with said material. Thereby, the receptacle is at least substantially clean after usage.
  • the receptacle may act as a mechanical support for the cartridge. It is therefore also possible to use laminated tubes which are thin-walled.
  • the laminated tubes have a wall thickness smaller than that of the receptacle. It is preferred that a ratio of “the wall thickness of the cartridge (i.e., of the laminated tube)” I “the wall thickness of the receptacle” is 0.80 or less.
  • a ratio of “the wall thickness of the cartridge (i.e., of the laminated tube)” I “the wall thickness of the receptacle” is 0.80 or less.
  • the laminated tube wall may be attached to the receptacle such that the thin-walled laminated tube is sufficiently stretched during usage. Such an attachment may for example be achieved by adhesion or clamping.
  • the length of the cartridge is greater than that of the receptacle with regard to the longitudinal direction (A).
  • the cartridge surplus i.e., the laminated tube wall overhanging from the receptacle, may be turned upside down in order to be clamped to the outer surface of the receptacle. This may also provide for a sufficient stretching of a thin-walled laminated tube in order to prevent it from collapsing during usage.
  • a method of producing a cartridge or a cartridge assembly is provided, such as the aforementioned cartridge or the aforementioned cartridge assembly, wherein the method comprises the steps of
  • the laminated tube comprising a solid head part a laminated film forming the cartridge wall may be provided in the form of an unsealed laminated tube or a sealed laminated tube.
  • the tube may be applied directly for the herein presented invention.
  • the tube must be cut open at the lower end, thereby providing an unsealed laminated tube, in order to have an opening for filling the material into the cartridge chamber.
  • the laminated tube is obtained from an already worldwide available and efficient large-scale production. Thereby, no special cartridge manufacturing is required which is beneficial from an economic, logistic and environmental point of view.
  • a shampoo tube which may typically be present for example at home or at a construction site, such as a shampoo tube.
  • the shampoo tube may be cut open at the lower end, cleaned with water, optionally rinsed with alcohol (e.g., ethanol), air-dried, and then applied as cartridge according to the herein described invention.
  • alcohol e.g., ethanol
  • the herein described method is therefore not solely to be understood in that a clean unfilled laminated tube may be obtained straight from the manufacturer.
  • filled laminated tubes which are to be disposed of, or which are substantially emptied after usage may be used. That way, such laminated tubes may be repurposed which may reduce the environmental burden.
  • the unsealed laminated tube is filled with any material to be dispensed required for the specific application. It is also possible to fill two or more materials into the chamber of the unsealed laminated tube. If the two or more materials ought to be mixed prior to dispensing, it is possible to use a dispenser tip with a mixer inside. Such dispenser tips having a mixing moiety inside are well known to the skilled person.
  • the filled laminated tube is then closed at the lower end by means of a piston.
  • the piston is required for moving inside the cartridge chamber (i.e., chamber of laminated tube) in order to urge the cartridge content towards the solid head part of the laminated tube.
  • a cap part is mounted on each one of the cartridges. Then, the cap parts may be connected together, as described above.
  • an inner surface of the front end is connected to an outer surface of the head part, or an outer surface of the front end is connected to an inner surface of the head part.
  • the laminated tube has a head part mold injected into a laminated film, thereby providing an inner surface of the front end being connected to an outer surface of the head part.
  • the head part may circumvent the front end of the laminated film, e.g., by adhesion, thereby providing an outer surface of the front end connected to an inner surface of the head part.
  • the laminated film comprises two layers or more.
  • the film may therefore be a multi-layer film comprising at least two, three, four, five or more layers.
  • the film comprises an outermost layer and an innermost layer.
  • the film comprises an inner-most layer, an outermost layer, and an inner layer situated between the inner-most layer and the outermost layer.
  • a multi-layer film comprising more than three layers may hence have more than one innermost layer, i.e., a four-layered film has two innermost layers.
  • the number of layers in the laminated film may be chosen.
  • multi-layer films enable a longer storage life of the components stored in the cartridge in comparison to films made of only one material.
  • at least one layer has a different thickness than the others in the multi-layer film. It has, for example, been found that on use with a multi-layer film, the innermost layer of the film should be the thickest layer of the film for reasons of stability and hence in the region where the bond is formed between the innermost surface and the head part, the most material is present leading to an improved bond in comparison to films that attach to an inner surface of a head part.
  • the head part may have a Shore D hardness selected in the range of 40 to 99. Preferably the Shore D hardness of the head part lies in the range of 40 to 60.
  • the head part may comprise polyethylene, polypropylene, polyamide, polyethylenterephthalate or polybutylenterephthalate.
  • the head part may for example comprise polyamide in the form of PA-6 (perlon) or PA-66 (nylon).
  • Polyamide has the advantage that it has a good mechanical stability and is thus suitable for the head part.
  • Polyethylenterephthalats (PET) may also be used for the head part. PET can namely be processed in a facile manner and has a good chemical resistance.
  • the head part is made of a high density PE (HDPE).
  • HDPE high density PE
  • High density polyethylene has a density in the range of 930 kg/m3 to 970 kg/m3.
  • the material of the head part may comprise a compound which is formed by a mixture of green PE with normal PE, a mixture of green PE and recycled PE, or a mixture of normal PE with green PE and recycled PE.
  • compounds comprising recycled PP, partially recycled PP and/or normal PP can be used in injection molding processes of the head part. The use of such recycled materials leads to a more environmentally friendly cartridge.
  • the head part may additionally be reinforced with further material such as through the use of fibers, such as natural fibers, wood fibers, cellulose fibers, hemp fibers, cork fibers, fibers from sun flower seeds, grass fibers, bamboo fibers, flax or carbon fibers.
  • PP, TPE, TPS can each be injection molded together with cork fibers.
  • PE, PP, PLA, PBS, and/or PBAT can be used in injection molding processes together with wood or natural fibers.
  • PA, PE and/or PP can be injection molded together with a wide range of natural fibers.
  • PP and/or PE can be injection molded together with fibers from sun flower seeds.
  • PE, PP, and/or PLA can be injection molded together with fibers grass fibers, flax. It is also possible to injection mold thermoplastic materials not only with one kind of fiber but a mixture of types of fibers. It is also possible to form the head part of a material that has been recycled, for example recycled by 100%, such as HDPE, green PE (e.g. made of sugar cane) and PP.
  • the layer comprises polyethylene (PE), polypropylene (PP), polyamide (PA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), a bio-polymer (such as a cellulose-based polymer, e.g., paper), a bio-polymer composite, and/or a post-consumer recycled (PCR) polymer.
  • PE polyethylene
  • PP polypropylene
  • PA polyamide
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • a bio-polymer such as a cellulose-based polymer, e.g., paper
  • PCR post-consumer recycled
  • the laminated film comprises layers made of the same kind of material, e.g., PE/PE (two layers), PA/PA/PA (three layers).
  • a tie layer which may be present between the layers is not considered to have the same kind of material.
  • the laminated film may be a multilayer film having at least two layers formed from different materials.
  • the laminated film may be a two-layer film comprising a sandwich structure in which the outermost layer is formed of polyethylene (PE) (20 to 40 pm thickness), which is connected to an innermost PET or PE layer (12 to 15 pm thickness) via a tie layer (1 .5 to 2.5 pm thickness).
  • the film may be a five-layer film comprising a sandwich structure in which the outermost layer is formed of PE (20 to 40 pm thickness) which is connected to an inner layer of PA (10 to 20 pm) via a tie layer (1 .5 to 2.5 pm).
  • the PA layer in turn is connected via a further tie layer (1 .5 to 2.5 pm) to an aluminum or aluminum alloy inner layer (5 to 10 pm).
  • the aluminum or aluminum alloy inner layer is in turn connected to a further PA inner layer (10 to 20 pm) via a further tie layer (1 .5 to 2.5 pm) which is then connected to an innermost layer, via a via a further tie layer (1 .5 to 2.5 pm) with the innermost layer having a thickness selected in the range of 45 to 100 pm.
  • the laminated film may be a three-layer film comprising a sandwich structure in which the outermost layer is formed of polyethylene (PE) (20 to 40 pm thickness), which is connected to an inner layer of aluminum (Al) or of an aluminum alloy (Al alloy) (7 to 12 pm thickness) via a tie layer (1 .5 to 2.5 pm thickness).
  • PE polyethylene
  • Al aluminum
  • Al alloy aluminum alloy
  • the Al or AL alloy layer is in turn connected to an innermost PET layer (12 to 15 pm thickness) via a further tie layer (1 .5 to 2.5 pm thickness).
  • the laminated film may be a four-layer film comprising a sandwich structure in which the outermost layer is formed of PE (20 to 40 pm thickness), which is connected to an inner layer of aluminum (Al) or of an aluminum alloy (Al alloy) (7 to 12 pm thickness) via a tie layer (1 .5 to 2.5 pm thickness).
  • the Al or AL alloy layer is in turn connected to an inner layer of PA (10 to 20 pm thickness) via a tie layer (1 .5 to 2.5 pm thickness).
  • the inner layer of PA is in turn connected to an innermost layer of PE (15 to 30 pm thickness) via a further tie layer (1 .5 to 2.5 pm thickness).
  • the respective tie layers are not considered to be individual layers of a multi-layered film, they are merely present to ensure a bond is formed between the individual layers.
  • the innermost layer comprises or consists of ethylene vinyl alcohol (EVOH).
  • EVOH ethylene vinyl alcohol
  • Said material may increase the barrier properties of the film, and thus provide a stronger protection against the cartridge content, and also prevent deterioration by the cartridge content.
  • the materials of the film can differ from the above- mentioned materials as can their respective thicknesses.
  • the laminated film typically has a thickness selected in the range of 40 to 200 pm, in particular of 70 to 180, in particular of 120 to 170 pm. In this connection, it is particularly beneficial from an environmental point of view if the film is thin-walled, i.e., if the thickness of the film lies in the range of from 40 to 70 pm.
  • At least one layer of the multilayer film comprises a bio-polymer (such as a cellulose-based polymer, e.g., paper), a bio-polymer composite, and/or a postconsumer recycled (PCR) polymer.
  • a bio-polymer such as a cellulose-based polymer, e.g., paper
  • a bio-polymer composite such as a postconsumer recycled (PCR) polymer.
  • PCR postconsumer recycled
  • polymers are well known to the skilled person.
  • biopolymers are polymers based on collagen, starch, sugar (such as green PE, sugar cane, or polyhydroxyalkanoate (PHA)), cellulose (such as paper), lactic acid (such as polylactic acid (PLA)) or alginate.
  • PHA polyhydroxyalkanoate
  • the laminated film is made of a material that has been recycled, for example recycled by 100%, such as HDPE, PE and PP.
  • the material of the laminated film may comprise a compound which is formed by a mixture of green PE with normal PE, a mixture of green PE and recycled PE, or a mixture of normal PE with green PE and recycled PE.
  • compounds comprising recycled PP, partially recycled PP and/or normal PP can be used in injection molding processes of the laminated film. The use of such recycled materials leads to a more environmentally friendly cartridge.
  • the laminated film comprises no metal-based layer, such as an aluminum-based layer.
  • the above-mentioned multilayer films may not comprise a layer, in particular an inner layer, of aluminum (Al) or of an aluminum alloy.
  • Al aluminum
  • Such laminated films may be easier to recycle.
  • the production of laminated tubes with metal-free films may be less elaborate, faster, and/or more economic as it may require less costly raw materials.
  • the cartridge further comprises a sealing film configured to seal the tube outlet from dispensing the material stored in the cartridge chamber, the sealing film being releasably connected to the tube outlet part, wherein the sealing film is releasable by urging the material stored inside the cartridge chamber towards the tube outlet for dispensing the material.
  • the sealing film may act as a barrier and can be made of any material applicable to protect the cartridge content from deterioration and/or decomposition, such as aluminum or a laminate kind.
  • the sealing film is non-permeable for gas, wherein the gas is in particular oxygen and/or vapor.
  • the thickness of the sealing film preferably lies in the range of from 40 to 120 pm, in particular of 70 to 100 pm.
  • the sealing film may be connected to the head part by means of adhesion, such as (hot) glue or welding.
  • the sealing film may be connected to an upper end of the tube outlet part, i.e., by covering the tube outlet formed by the outlet part from the outside. This may be performed by attaching a sealing film, such as an aluminum film, on top of the outlet part of the tube.
  • the sealing film may alternatively be connected to a lower end of the tube outlet part, i.e., by covering the tube outlet formed by the outlet part from the inside of the head part. This may be performed by attaching a sealing film to the bottom of the outlet part of the tube. The latter is obviously performed prior to filling of the cartridge.
  • Laminated tubes being sealed in this manner may be able to protect the cartridge content from environmental factors, such as light, oxygen and/or moisture. That way, a material inside the cartridge which may be sensitive to any of these factors, may be sufficiently protected.
  • the sealing film may further act as a mechanical support for the filling material inside the cartridge, such that the cartridge content cannot exit the cartridge during storage or when no dispensing thereof is required.
  • the sealing film Prior to usage, i.e., when dispensing of the cartridge content is required, the sealing film may be peeled off, i.e., the sealing film is releasable. The latter is possible for when the sealing film is situated on top of the outlet part.
  • the sealing film may be detached by pressing the cartridge content out from the tube outlet. It is therefore required that the sealing film is releasably connected to the outlet part, i.e., it is possible to disconnect the sealing film by pulling off or by mechanical pressure induced by urging of the cartridge content towards the tube outlet.
  • the cartridge further comprises a sealing film covering a surface of the piston facing the head part of the laminated tube.
  • the sealing film forms a barrier between the piston and the cartridge content.
  • the sealing film is non-permeable for gas, wherein the gas is in particular oxygen and/or vapor. That way, it is possible to protect the cartridge content from the aforementioned environmental influences in case the user stops the cartridge usage for a period of time in order to pursue the cartridge usage thereafter, for example during a break for lunch.
  • the piston comprises comprising a hollow rigid ring part defining a side wall of the piston that is adapted to cooperate with an inner sidewall of a cartridge, and a head part defining a top surface of the piston, the head part being disposed on the ring part, wherein the ring part and the head part are sealingly connected to one another, in particular wherein the head part is at least partially made of a flexible material.
  • a piston is also referred to as a hybrid piston.
  • the top surface of the head part of the piston faces and is in contact to the material disposed in the cartridge.
  • the ring part of the piston may form a hollow body which may resemble at least substantially a hollow cylinder (with not necessarily circular cross-section) with at least one open end (lower end).
  • the open lower end may be adapted to receive a plunger intended to move the piston in the cartridge.
  • the head part of the piston covers an upper end of the ring part, thereby forming a top surface of the piston.
  • the ring part may have a closed upper end face that is in contact with the head part. However, the upper end of the ring part may be provided with an aperture that is covered by the head part.
  • the ring part and the head part are sealingly connected to one another, meaning that when the piston is used in a cartridge, i.e., the piston being arranged inside a cartridge chamber in a moveable manner along a longitudinal direction (A) of the cartridge, no filling material gets from the cartridge chamber inside the hollow piston.
  • the head part forming a top surface of the piston, wherein the head part is sealingly connected to the rigid part.
  • the ring part and the head part are releasably or non-releasably connected to one another.
  • releasably connected means that the flexible part and the rigid part may be detached from one another when intended to do so, such as by pulling off the flexible part from the rigid part.
  • non-releasably connected means that the flexible part and the rigid part may not be detached from one another during storage or normal usage, and wherein the flexible part may not be pulled off from the rigid part.
  • the rigid part does not detach or is not released from the flexible part.
  • the head part and the ring part of the piston may be sealingly and optionally releasably connected by any appropriate adhesive, such as adhesive tape and/or glue, or any appropriate fastener, such as a fastening clamp and/or a fastening ring.
  • any appropriate adhesive such as adhesive tape and/or glue
  • any appropriate fastener such as a fastening clamp and/or a fastening ring.
  • a welded connection that allows to rip or tear the head part off the ring part is also conceivable.
  • the ring part By avoiding a direct contact between the filling material and the ring part, the ring part is not contaminated, i.e., does not get dirty. In doing so, it is avoided that the rigid part needs to be cleaned, and more importantly disposed after usage, in particular after a single use, which is typical for a common (not-hybrid) piston. This is particularly the case for when a filling material rapidly cures so that a sufficient cleaning of a common piston is elaborate and/or inefficient after intended usage in a cartridge.
  • the ring part provides the mechanical stability of the piston and the head part protects it from the material in the cartridge. Thus, the head part acts like a protective sleeve.
  • the piston is advantageous form an environmental point of view because at least the ring part can be used multiple times.
  • the herein claimed hybrid piston does not need to be disposed of after a single use. Instead, after usage of the piston, the contaminated head part thereof is released from the substantially not decontaminated ring part, such as by pulling or tearing it off.
  • the same (not decontaminated) ring part may be used in combination with a new or cleaned head part.
  • An outer surface section of the ring part may be connected to an inner surface section of the head part. The higher the contact area between the outer surface of the ring part and the inner surface of the head part, the stronger is the connection between those two components.
  • a section of the head part may have an axial extension so as to cover a section of an outer sidewall of the ring part.
  • the wall thickness of the head part may smaller than the wall thickness of the ring part and/or wherein the head part is made of a more stable or rigid material than the head part.
  • a ratio of the wall thickness of the flexible part to the wall thickness of the rigid part may be 0.8 or less, 0.6 or less, 0.5 or less, 0.4 or less, 0.3 or less, 0.2 or less, 0.1 or less, 0.05 or less, or 0.03 or less.
  • the flexible part is any common polymer film which can withstand a movement of the hybrid piston towards a filling material inside a cartridge (chamber) in order to dispense the filling material out of the cartridge.
  • the flexible part may be a piece of a plastic wrap.
  • the hybrid piston is advantageous form an environmental point of view because of the possibility of the flexible part to stretch and thereby adapt to any shape of a plunger movable though the hollow hybrid piston. This aspect is described in more detail further below.
  • the hybrid piston is used together with a plunger that can be positioned in the hollow ring part of the aforementioned hybrid piston, wherein the plunger comprises a leading surface that can be brought into contact with a surface of the head part, the leading surface having a non-flat geometry.
  • the leading surface may be convex.
  • the leading surface may be configured to deform the head part of the hybrid piston elastically or plastically during use of the hybrid piston assembly.
  • a usage thereof with the plunger is also beneficial for an efficient emptying of a cartridge, thereby making the cartridge reusable. This is because the leading surface may preferably be configured to stretch the head part of the hybrid piston defining the top surface of the piston along the longitudinal direction (A).
  • said leading surface being covered with the stretched head part of the hybrid piston may extend beyond the ring part of the piston and towards the inside of the cartridge (chamber), thereby urging a higher amount of the filling material out of the cartridge (chamber).
  • An inner geometry of the head part of a cartridge may have a geometry complementary to that of the leading surface.
  • the cartridge further comprises a stabilizing part situated at the lower end of the laminated film, configured to releasably connect the piston to the lower end of the laminated film, and to align the first end and the second end of the piston substantially orthogonal with regard to the longitudinal axis (A) of the cartridge.
  • the stabilizing part hence connects the laminated film to the piston.
  • This connection is releasable, in particular configured to be released when the piston is moved, for example towards the outlet part of the cartridge in order to dispense the cartridge content. It is possible to connect the inner circumferential surface of the lower end of the laminated film to the piston.
  • said inner circumferential surface may be attached to the outer circumferential surface of the piston, e.g., by using a glue, or ultrasonic or thermal contact welding.
  • the stabilizing part may be an adhesive material or a material for welding.
  • the stabilizing part is a perforating element, such as a dowel, pin, plug, anchor, or the like. Such a perforating element may traverse the lower end of the laminated film and the piston.
  • the outer circumferential surface of the piston may have at least one respective opening for introducing the perforating element. It is also possible that the perforating element is situated at the inner circumferential surface of the lower end of the laminated film, and protrudes towards the piston.
  • the piston may also have at least one respective opening for introducing the perforating element. It is important that the perforating element is able to break or detach from the piston when the piston is moved towards the outlet part of the cartridge.
  • the stabilizing part is particularly beneficial in order to stabilize the position of the piston inside cartridge during storage. The piston may therefore be prevented from falling out of the cartridge. This particularly supports the use of a laminated tube obtained from any manufacturer, especially a laminated tube which is not custom-made for the piston intended to use together.
  • the stabilizing part may also serve as a means to prevent leakage of the cartridge content from the lower end of the laminate film. The lower end of the laminate film may be temporarily sealed by using such stabilizing parts, e.g., during storage.
  • the cartridge further comprises a support sleeve comprising a first and a second end with the longitudinal axis (A) of the cartridge extending between the first and the second end, the support sleeve being configured to receive the cartridge and the first end being configured to be connected to the head part, and optionally the second end of the sleeve extending radially outwardly from the longitudinal axis (A).
  • the support sleeve may act as a mechanical support for the laminated tube which is inserted into the support sleeve. This is especially the case for thin-walled laminated tubes.
  • the wall thickness of the support sleeve is therefore preferably greater than that of the laminated film.
  • the support sleeve is rigid in order to prevent it from collapsing during usage.
  • the support sleeve may be reusable since it does not come in direct contact with the cartridge content.
  • the support sleeve may have a length at least substantially equal to that of the laminated tube with regard to the longitudinal direction (A).
  • the cartridge comprises an Automatic Identification and Data Capture (AIDC) element, wherein the AIDC element comprises information relating to the material stored in the cartridge chamber; and/or wherein the AIDC element comprises information relating to the number of times the cartridge has been filled; and/or wherein the AIDC element comprises information relating to the date of last filling of the cartridge; and/or wherein the AIDC element comprises information relating to a maximum storage life of the material stored in the cartridge chamber; and/or wherein the AIDC element comprises information relating to the correct installation of the cartridge at a dispenser and/or a filling station; and/or wherein the AIDC element comprises information relating to a dispenser specific dispensing information correlated to the material stored in the cartridge chamber; and/or wherein the AIDC element comprises information relating to a maximum number of filling cycles for the cartridge.
  • AIDC Automatic Identification and Data Capture
  • the AIDC element is configured to provide means for performing a method of automatically identifying predetermined objects and/or collecting data about the predetermined object and/or forwarding the collected data to a computer system.
  • the AIDC element can be designed for example as a QR code, a bar code, a Radio Frequency Identification (RFID) and/or as a magnetic stripe.
  • RFID Radio Frequency Identification
  • Such AIDC elements are known to the skilled person e.g. from EP 3 771 496 A1 , the entire content thereof is herewith incorporated by reference.
  • a ratio of “the wall thickness of the cartridge” I “the wall thickness of the receptacle” is 0.80 or less, preferably 0.70 or less, more preferably 0.6 or less, even more preferably 0.5 or less, still more preferably 0.4 or less, still further preferably 0.3 or less. With such ratios, it is possible to provide for an environmentally friendly cartridge since the waste amount is reduced. The smaller the wall thickness of the cartridge, the higher the smaller is the amount of waste produced from a cartridge usage.
  • the large-scale production of the laminated tube has a productivity rate of 100 laminated tubes per minute or more, preferably 150 laminated tubes per minute or more, and more preferably 180 laminated tubes per minute or more. In an even more preferred embodiment, the large-scale production of the laminated tube has a productivity rate of 200 laminated tubes per minute or more.
  • Fig. 1 cartridge according to the present invention
  • FIG. 2 schematic illustration of a cartridge according to the present invention
  • Fig. 3 dispenser according to the present invention
  • Fig. 4 schematic illustration of a dispenser according to the present invention
  • Fig. 5 top image: side view of a cartridge with a cap part mounted on the head part thereof.
  • Bottom image top view of two cap parts mounted on cartridges;
  • Fig. 6 a schematic illustration of a cartridge assembly comprising two cartridges connected via two connecting parts, and a dispenser tip;
  • Fig. 7 a schematic illustration of a cartridge comprising a support sleeve
  • FIG. 8 two different embodiments of the sealing film covering the outlet of the laminated tube - top image: sealing film covering the top of the outlet part; bottom image: sealing film covering the bottom of the outlet part;
  • Fig. 9 a schematic illustration of a cartridge, wherein the piston is covered with a sealing film
  • Fig. 10 a schematic illustration of two embodiments of a cartridge, wherein the laminated film is connected to the piston via a stabilizing part.
  • the stabilizing part is a perforating element.
  • Fig. 11 a schematic illustration of a hybrid piston
  • Fig. 12 a schematic illustration of a hybrid piston used with a plunger.
  • Fig. 1 shows a cartridge of the present invention comprising a laminated tube 3 obtained from a manufacturer and a piston 4.
  • the laminated tube 3 has a lower end 7 which is unsealed, i.e., the lower end was cut open.
  • the laminated tube 3 further has a front end 8 which is connected to the head part 6.
  • the lid 5 may be used to close the head part 6 of the laminated tube 3, however the lid 5 is not essential for the present invention.
  • the head part 6 is solid and comprises a shoulder part 9, and an outlet part 10 forming an outlet 11 from which the cartridge content 2 may be dispensed.
  • the cartridge content 2 consists of two kinds of materials. It is also possible to use any other material or number of materials.
  • the cartridge 1 comprising the laminated tube 3 further comprises a piston 4.
  • the piston 4 is introduced into the cartridge chamber, i.e., into the laminate tube 3.
  • Fig. 2 shows a schematic illustration of a cartridge 1 .
  • the piston 4 is shown in a U-shaped manner, however it is also possible that the piston is cylindrical as indicated in Fig. 1 . Since the piston 4 is introduced into the laminated tube, it is obvious that the lower end 7 of the laminated tube is unsealed.
  • the laminated film of the laminated tube 3 is crosshatched.
  • the front end 8 of the laminated film is connected to the head part 6.
  • the laminated tube extends along the longitudinal direction (A) of the cartridge.
  • the shoulder part 9 is orthogonal with regard to the longitudinal direction (A). It is also possible that the shoulder part is inclined as shown in Fig. 1 .
  • Fig. 3 shows a dispenser 12 of the present invention comprising a receptacle 13 into which the cartridge 1 was inserted.
  • the dispenser 12 is connected to a dispenser tip 14.
  • Fig. 4 shows a schematic illustration of a dispenser 12 comprising the cartridge 1 and a dispenser tip 14.
  • the piston 4 is U-shaped so that the rack 15 comprises a disk 16 in order to appropriately move the piston 4 towards the outlet part 10. If the piston 4 is cylindrical, the disk 4 is not required.
  • Fig. 5 shows a cartridge 1 with a cap part 17 mounted on top of the head part 6 (not shown).
  • the laminated film is shown as a crosshatched area.
  • the cap part comprises an outlet part 18 which forms an outlet 19.
  • Two cap parts 17, 17’ may be connected via the connecting parts 20. The connection of two cartridges 1 may thereby form a cartridge assembly, as shown in Fig. 6.
  • Fig. 7 shows a cartridge 1 as already schematically illustrated in Fig. 4, with the difference that the cartridge herein comprises a support sleeve 20 receiving the cartridge 1 inside a dispenser 12.
  • Fig. 8 shows two embodiments of a cartridge 1 , wherein the outlet 11 is sealed with a sealing film 22.
  • the sealing film 22 is situated on top of the outlet part 10.
  • the top right image shows a top view thereof. It can be seen that the outlet is completely sealed by means of the sealing film.
  • the sealing film 22 is situated at the bottom of the outlet part 10.
  • the outlet part 10 is shown in the bottom image in a fork-like manner. However, it is also possible that the outlet part is as shown in the top image of Fig. 8.
  • the sealing film may also be on top of the piston as shown in Fig. 9.
  • Fig. 10 shows two embodiment of a cartridge 1 , wherein the laminated film (crosshatched area) is connected to the piston 9 via a stabilizing part 23.
  • the stabilizing part 23 is a glue or a welding material connecting the lower end of the laminated tube to the piston 9.
  • the stabilizing part 23 is a perforating element traversing the piston 9 through a predefined hole 24. Any other geometries of the hole are possible.
  • Fig. 11 shows a schematic illustration of an embodiment of a hybrid piston 23.
  • the piston 23 comprises a rigid ring part 24 defining a side wall of the piston and a flexible head part 25 defining a top surface of the piston.
  • Head part 25 forms a top surface 24’ of the piston.
  • the head part 25 partially covers the side wall of the piston (overlap 45’).
  • the ring part is provided with a sealing lip 26 that cooperates in use with the sidewall of chamber.
  • Fig. 12 shows an embodiment of a hybrid piston with a plunger 27. In the top image of Fig. 12, a plunger 27’ is shown having a dome-shaped leading surface 29. When the plunger 27’ is pushed into ring part 24, said leading surface deforms a section of the head part exposed due to an aperture 30 in a head face of the ring part.
  • any further axial movement of plunger results in an axial movement of piston 23 that eventually leads to the dispensing of the material contained in the respective chamber.
  • the plunger may stretch the head part by pushing against it, thereby forming a stretched head part 28

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

L'invention concerne une cartouche pour un matériau à distribuer comprenant un tube stratifié (3), et un piston (4), un ensemble cartouche comprenant au moins deux de ces cartouches, un distributeur comprenant un réceptacle pour recevoir de manière répétée cette cartouche, et un procédé de production de cette cartouche ou de cet ensemble cartouche.
PCT/EP2023/085623 2022-12-23 2023-12-13 Cartouche de tube stratifié WO2024132786A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2219671.1 2022-12-23
GBGB2219671.1A GB202219671D0 (en) 2022-12-23 2022-12-23 Cartridge of laminated tube

Publications (1)

Publication Number Publication Date
WO2024132786A1 true WO2024132786A1 (fr) 2024-06-27

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Application Number Title Priority Date Filing Date
PCT/EP2023/085623 WO2024132786A1 (fr) 2022-12-23 2023-12-13 Cartouche de tube stratifié

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GB (1) GB202219671D0 (fr)
WO (1) WO2024132786A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070235475A1 (en) * 2006-04-07 2007-10-11 Albion Engineering Company Convertible device for dispensing material having parts that can be retained on the device
WO2013077566A1 (fr) * 2011-11-22 2013-05-30 주식회사 다우기업 Cartouche pour agent d'étanchéité
KR20160000497U (ko) * 2014-08-01 2016-02-15 신현균 열전사 필름을 이용한 실런트용 카트리지
WO2020185174A1 (fr) * 2019-03-13 2020-09-17 Ykc Plasti̇k Ambalaj Ve Kapak Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇ Récipient tubulaire multicouche à indicateur d'échelle transparent
EP3771496A1 (fr) 2019-07-29 2021-02-03 Sulzer Mixpac AG Cartouche de mastic rechargeable, distributeur, station de remplissage et système comprenant une cartouche de mastic, un distributeur et une station de remplissage, ainsi qu'une cartouche et un connecteur pour cartouche

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070235475A1 (en) * 2006-04-07 2007-10-11 Albion Engineering Company Convertible device for dispensing material having parts that can be retained on the device
WO2013077566A1 (fr) * 2011-11-22 2013-05-30 주식회사 다우기업 Cartouche pour agent d'étanchéité
KR20160000497U (ko) * 2014-08-01 2016-02-15 신현균 열전사 필름을 이용한 실런트용 카트리지
WO2020185174A1 (fr) * 2019-03-13 2020-09-17 Ykc Plasti̇k Ambalaj Ve Kapak Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇ Récipient tubulaire multicouche à indicateur d'échelle transparent
EP3771496A1 (fr) 2019-07-29 2021-02-03 Sulzer Mixpac AG Cartouche de mastic rechargeable, distributeur, station de remplissage et système comprenant une cartouche de mastic, un distributeur et une station de remplissage, ainsi qu'une cartouche et un connecteur pour cartouche

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