EP3241781A1 - Tube doté d'un insert d'étranglement - Google Patents

Tube doté d'un insert d'étranglement Download PDF

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Publication number
EP3241781A1
EP3241781A1 EP17165003.9A EP17165003A EP3241781A1 EP 3241781 A1 EP3241781 A1 EP 3241781A1 EP 17165003 A EP17165003 A EP 17165003A EP 3241781 A1 EP3241781 A1 EP 3241781A1
Authority
EP
European Patent Office
Prior art keywords
throttle
nozzle
tube
insert
distal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17165003.9A
Other languages
German (de)
English (en)
Other versions
EP3241781B1 (fr
Inventor
Andreas Geiger
Andreas Eggenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoffmann Neopac AG
Original Assignee
Hoffmann Neopac 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 Hoffmann Neopac AG filed Critical Hoffmann Neopac AG
Priority to PL17165003T priority Critical patent/PL3241781T3/pl
Publication of EP3241781A1 publication Critical patent/EP3241781A1/fr
Application granted granted Critical
Publication of EP3241781B1 publication Critical patent/EP3241781B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/18—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages for discharging drops; Droppers
    • 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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/24—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices
    • B65D35/40—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices for metering discharge

Definitions

  • the invention relates to a tube with a throttle insert, a throttle insert and a method for producing a tube according to the preambles of claims 1, 7 and 10.
  • liquids must be dispensed drop by drop or metered. This is especially true for liquids with pharmaceutical or cosmetic agents or for liquids with dyes, flavors or fragrances, which are used for example in the processing of food.
  • the viscosity of such liquids is in the range of 1 to 100 mPas.
  • Liquids are also referred to as liquid mixtures and emulsions.
  • Suitable containers for storing and dispensing such liquids are in particular tubes and tube-like small bottles. These include a reservoir containing the liquid to be dispensed, and a spout having a dispensing opening.
  • the nozzle forms an output channel, the distal end of which is connected to the reservoir, and at the proximal end of which the dispensing aperture is arranged.
  • proximal and distal refer to the location or direction relative to the dispensing opening, respectively.
  • Various factors affect the size or volume of drops that form the liquid at the dispensing opening, before these drops come off the nozzle.
  • Such factors are, for example, the interfacial tension and the surface tensions of the liquid and the nozzle to be dispensed, the size and shape of the nozzle in the region of the dispensing opening, the pressure and the flow rate of the liquid in the dispensing channel, and the gravity acting on the exiting liquid.
  • a pressure force acting on the respective tube in addition to the ambient pressure causes an increase in pressure in the interior of the reservoir relative to the ambient pressure.
  • liquid is displaced from the reservoir through the discharge channel to the discharge opening, where it exits the tube.
  • the volume flow discharged through the dispensing opening also increases.
  • This dependence of the volume flow of the pressure force which exerts a person in addition to the ambient pressure on the tube, prevents or hampers the formation of uniformly large drops. Dosing the liquid by dispensing evenly large drops is thereby impaired or even made impossible.
  • tubes whose jacket is elastically deformable wherein the jacket can be made of plastic or of a composite material with plastic, for example, causes the elastic restoring force of the material in the absence of forces that act in addition to the ambient pressure from the outside of the jacket, that the pressure in the reservoir is less than the ambient pressure. If there is a sufficiently large pressure difference, liquid which is located in the discharge channel is forced back into the reservoir by the suction, ambient air penetrating through the discharge opening into the discharge channel.
  • a tube which comprises an output channel in the form of an elongated nozzle.
  • the distal end of the neck is connected via a tube shoulder with the tube jacket.
  • the neck is slightly conical on the outside and inside, with the inside diameter decreasing from the distal end to the dispensing opening.
  • an insert is inserted into the nozzle in such a way that a stop element of the insert abuts against the inside of the tube shoulder and thereby prevents the insert in the direction of the dispensing opening can continue to penetrate into the nozzle.
  • the insert includes a proximal and a distal portion whose lateral surfaces in this position sealingly abut the inner wall of the nozzle.
  • Both portions of the insert are interconnected by a smaller diameter connecting neck such that the inside of the tubular neck and the insert are annular Limit gap.
  • the intermediate space is connected by a respective longitudinal groove in the distal and in the proximal portion of the insert with the interior of the tube body and with the adjacent to the discharge opening portion of the discharge channel. An additional recess in the stop element ensures that the connection to the interior of the tube body is ensured.
  • a throttle passage is formed, which acts as a flow resistance and limits the volume flow of the liquid to be dispensed even when the tube is compressed. This ensures that droplet formation at the dispensing opening is largely independent of the pressure exerted on the tube.
  • the insert comprises in the distal direction axially adjacent to the stop element an extension which can be used as an assembly aid for inserting the insert into the nozzle.
  • This extension is formed coaxially and mirror-symmetrically to the front part of the insert, wherein the plane of symmetry is in the region of the stop element.
  • the extension protrudes comparatively far into the tube body.
  • the flexible tube jacket When the flexible tube jacket is compressed, it can come into contact with the extension and exert a force on the insert. As a result, the frictional connection between the lateral surfaces of the insert and the inner wall of the nozzle can be solved.
  • the insert and the neck are conical and matched in shape and size exactly matched.
  • the lateral surfaces of the insert In a relative axial position, which is determined by the stop element and the tube shoulder, the lateral surfaces of the insert must bear against the inner wall of the nozzle by exerting a radial pressure force surface sealing. This requires a sufficiently large length of the nozzle and the insert in the axial direction.
  • the neck is formed as an elongate cannula and includes a portion adjacent to the tube shoulder with an external thread and adjacent thereto a front portion with the discharge opening. The insert extends in the axial direction beyond the section with the external thread into the front section. The diameter of the discharge channel is small, even at the distal end of the nozzle, compared to the length of the nozzle.
  • the container preferably in the form of a tube or a tube-like bottle, comprises a reservoir for a fluid medium and a nozzle with an outlet channel which connects a dispensing opening to the reservoir.
  • the dispensing opening is located at a forward portion of the neck, also referred to as a proximal portion.
  • This proximal portion may be formed differently according to the respective requirements and include, for example, an elongated conical cannula, a ring body with a short tube section or a disc with a central opening. Parameters such as shape, size, opening area, material, or surface finish of the proximal portion may be optimized according to the fluid being dispensed so as to favor delivery of drops of a desired size or volume.
  • a distal portion of the neck preferably comprises an external thread or generally an outer support structure for screwing or for securing a protective cap.
  • the output channel is at least approximately cylindrical or slightly conical in this area formed, wherein the inner diameter axially remains the same or increases in the distal direction.
  • the distal end of the neck is connected via a tube shoulder with a tube jacket, which encloses the reservoir.
  • a throttle insert formed essentially as a plug-like rotary body is inserted into the distal section of the nozzle, thereby reducing the free cross-section of the dispensing channel.
  • the throttle insert is a dome-shaped or hood-like injection-molded part. Such parts can be efficiently manufactured and easily inserted into the neck. In addition, the amount of material required for the production compared to a solid body is low.
  • the throttle insert forms a baffle or obstruction to a liquid which is conveyed in the discharge channel from the reservoir in the direction of the discharge opening.
  • the maximum volume flow of the liquid which is displaced from the reservoir to the discharge opening at a certain overpressure in the reservoir relative to the ambient pressure, can be limited or throttled. This can be ensured at the discharge opening a uniform droplet formation at the discharge opening.
  • the throttle insert obstructs the dispensing channel with the exception of one or more throttle channels, which form a bottleneck in the dispensing channel.
  • the outer diameter of the throttle insert is greatest in the region of a lower or distal outer edge, where an outer lateral surface and an end-face stop ring of the throttle insert meet one another.
  • This stop ring undercuts a shoulder, which is formed in the distal portion of the nozzle on the inner wall.
  • the shoulder may in particular comprise an annular bead projecting on the inner wall of the connecting piece or at least a portion of such an annular bead.
  • the shoulder may also comprise a portion of the interface of an annular recess on the inner wall of the nozzle.
  • Such a paragraph may e.g. be already prefabricated in the production of the nozzle or the tube part with the nozzle as injection molding.
  • the shoulder is formed only when pressing in the throttle insert, wherein the inner wall of the nozzle is plastically deformed by radially acting pressure forces with which the throttle insert acts on the nozzle and thereby adapts to the shape of the throttle insert at least in the region of the stop ring.
  • This effect is favored when the material of the throttle insert is harder than that of the nozzle and not or only slightly insignificant during pressing deformed.
  • the insert may be made of polypropylene and the tube head of polyethylene, preferably HDPE.
  • the edge angle which enclose the outer lateral surface and the end-side stop ring at the outer edge, 90 ° or smaller, and the outer edge is comparatively sharp. This favors the penetration of this edge into the nozzle and the displacement of material of the nozzle during pressing, so that the edge easily wedged with the nozzle and prevents the re-emergence of the throttle insert.
  • the outer edge of the stop ring has a pitch angle which is greater than or equal to 0 °. This allows a particularly secure positive connection of the throttle insert with the nozzle.
  • the outer lateral surface of the throttle insert Adjacent to the lower outer edge, the outer lateral surface of the throttle insert comprises a distal portion whose pitch angle preferably corresponds substantially to the pitch angle of the inner wall of the nozzle at this point.
  • the pitch angle is thus at least approximately 90 °.
  • a non-positive surface connection of the throttle insert with the neck can be effected.
  • one or more primary throttle passages are disposed along the periphery of the throttle insert, each of these primary throttle passages being separated by a groove-shaped recess on the outer surface of the throttle insert and is limited by the inner wall of the nozzle.
  • Throttle inserts of this type can be produced relatively easily and inexpensively in different variants. Already with a few simple changes of the tool for the production of such injection-molded parts, for example, number, arrangement, shape and size of such throttle channels can be changed. The production of appropriate tools is also relatively easy and inexpensive.
  • throttle channels which form a bottleneck with a very small cross-sectional area, can be produced without problems.
  • the length of the primary throttle channels can be specified.
  • a longer throttle channel forms a larger flow resistance for the liquid.
  • the flow resistance can be further influenced by, for example, one or more stages changing the free cross-sectional area along the flow path.
  • the outer lateral surface of the throttle insert Adjacent to the distal portion, the outer lateral surface of the throttle insert preferably comprises a proximal portion which continuously or stepwise decreases down to an upper or proximal outer edge, so that the inner wall of the nozzle and the outer surface of the throttle insert an annular space limit, in the open or the primary throttle channels.
  • Adjacent to the proximal outer edge of the throttle insert comprises a cover portion, which completes the separation of the output channel in a proximal region facing the output port and a distal region facing the reservoir.
  • the throttle insert or its cover portion may be arranged with a sufficiently large distance from the proximal portion of the neck, so that the proximal portion of the dispensing channel between the annulus and the dispensing opening comprises no more bottlenecks and liquid can pass unhindered from the annulus to the dispensing opening.
  • the cover portion of the throttle insert comprises a disc-like or pan-shaped central region and a peripherally arranged contact ring.
  • the contact ring is an annular shoulder that protrudes axially at the central portion of the deck portion.
  • the contact ring adjoins the proximal outer edge of the lateral surface and comprises an end face contact surface, which preferably rests in the mounted state of the throttle insert on the inside of the proximal portion of the nozzle.
  • one or more grooves are excluded at the contact surface, which together with the adjacent part of the nozzle one or more secondary throttle channels limit.
  • the cover section delimits, together with the distal section of the neck, a dispensing space whose size or volume can be predetermined by the shape of the cover section, in particular by the size of a pan shaped in the cover section.
  • the thus defined volume can be used, for example, as an aid for dosing a quantity of liquid to be dispensed, first by squeezing the tube shell in an upright tube filled the pan volume with liquid and then the liquid collected in the pan by rotating the tube without pressure on the tube coat dropwise through the Output port is issued.
  • the secondary throttle channels can be used analogously to the primary throttle channels for further limiting the volume flow of the liquid.
  • the shape of the throttle insert thus parameters can be influenced, which affect the liquid output.
  • the number, length and cross section of the primary and secondary throttle channels as well as the sizes of the annular space and the output space can be adjusted according to the liquid to be dispensed.
  • Throttle inserts can be easily manufactured with different heights and outside diameters and thus optimized for tubes with different dispensing nozzles. If the positive connection of the throttle insert with the Output spout is made by radial compression of these parts, tools that are used for the production of tubing parts with conventional dispensing nozzle, can be used unchanged for the production of corresponding parts for the inventive tubes.
  • the neck of a tube is made as a one-piece molding, which also includes the tube shoulder.
  • the tube jacket is made, for example, from a laminate film, which may comprise a barrier layer made of metal or plastic, formed into a tube and welded to the tube shoulder or connected in any other way.
  • the throttle insert can be easily grasped by a gripper and inserted from the distal side into the nozzle, where it is radially compressed in a predetermined axial position with the nozzle.
  • the throttle insert for this purpose comprises a cylindrical or slightly conical mounting pin which projects axially on the distal side of the cover portion.
  • the tube opening can now still be closed by a removable protective cap.
  • Such prepared tubes can be sterilized before filling with the liquid.
  • the materials used are chosen so that they are the ones required environmental conditions such as high temperatures unscathed tolerated.
  • the open distal end of the tube sheath is e.g. closed by welding.
  • FIG. 1 shows a first embodiment of a tube 1 with a reservoir 3 for a fluid or liquid medium, wherein the reservoir 3 is surrounded by a tube jacket 5 or enclosed.
  • the tube jacket 5 is preferably made of a multilayer laminate film comprising at least one plastic layer and preferably a barrier layer of metal or plastic and formed into a tube.
  • Via a tube shoulder 7, a front edge of the tube jacket 5 is connected to a distal portion 9b of a tubular neck 9, which forms an output channel 13.
  • an output port 11 is formed, which is connected via the output channel 13 to the reservoir 3.
  • the nozzle 9 and the tube shoulder 7 can be made as a continuous injection molded part, which is substantially rotationally symmetrical with respect to a tube axis X with the exception of an external thread 15 in the distal portion 9b of the nozzle 9.
  • the proximal portion 9a of the neck 9 is an annular disc whose central recess is the dispensing opening 11.
  • the diameter D1 of the discharge opening 11 is smaller than the smallest inner diameter D2a of the discharge channel 13 in the adjacent distal portion 9b of the nozzle 9.
  • the annular disc thus forms a stop surface which projects radially inwards on the inner wall of the nozzle 9.
  • This inner wall has, with respect to a normal plane to the tube axis X, an inclination angle ⁇ , e.g. may be in the range of 75 ° to 90 °.
  • a throttle insert 31 which in the FIGS. 2 to 4 is shown in detail, is inserted into the output channel 13 that it has a small distance S1 to the annular disc or the abutment surface of the proximal portion 9a of the nozzle 9, said distance S1 is preferably in the range of 0 to 1mm.
  • the throttle insert 31 essentially comprises a dome-shaped or hood-like rotational body with an outer lateral surface 33 which extends from a lower or distal outer edge 35 with a maximum diameter D3a over a height H to an upper or proximal outer edge 37 with a diameter D3b extends, D3b is smaller than D3a.
  • the pitch angle of the lateral surface 33 may change continuously or stepwise.
  • the outer diameter of the lateral surface 33 along the height H could shrink with one or more steps. Adjacent to the proximal outer edge 37 is the outer diameter of the Throttle insert 31 smaller than at the distal outer edge 35th
  • annular shoulder 17a is formed on the inner wall of the nozzle 9, whose outer diameter corresponds to the maximum outer diameter D3a of the throttle insert 31.
  • This annular shoulder 17a may be comparatively narrow and preferably has a width which is of the order of 0.1 mm to 0.6 mm, in particular from 0.1 mm to 0.2 mm.
  • the annular shoulder 17 a is the lowermost portion or a distal end portion of an annular recess 17, which causes the distal portion 9 b of the throttle insert 31 when pressed into the cylindrical or conical inner wall of the nozzle 9.
  • the annular shoulder 17 a is the lowermost portion or a distal end portion of an annular recess 17, which causes the distal portion 9 b of the throttle insert 31 when pressed into the cylindrical or conical inner wall of the nozzle 9.
  • the throttle insert 31 comprises an end stop ring 39 adjoining the lateral surface 33, which preferably lies in an orthogonal plane to the axis Y of the throttle insert 31 or alternatively may have an inclination angle between 0 ° and approximately 60 ° (not shown).
  • an annular cavity 41 is excluded from the body of the throttle insert 31. This brings about a solid body material savings and a more uniform material thickness, which is advantageous for the efficient production of an injection molded part. This is particularly important for the production of throttle inserts with comparatively large outside diameters.
  • a tool or a punch can be introduced into the cavity 41, which rests against the inner wall of the throttle insert 31 and favors the radial insertion of the throttle insert 31 into the inner wall of the nozzle 9.
  • a preferably cylindrical or slightly conical axial mounting pin protrudes in the distal direction on a base plate 43 which delimits the cavity 41 at the end 45, preferably beyond the plane of the distal outer edge 35 addition.
  • a channel-like primary throttle channel 47 is embedded in the lateral surface 33, the distal end of the end stop ring 39 opens and its proximal end opens in the proximal portion of the lateral surface 33, where the outer diameter D3 of the lateral surface 33 for limiting the annulus 19th is smaller.
  • the depth S2 of the primary throttle channel 47 and the radius R1 of the throttle insert 31 in the region of the primary throttle channel 47 are dimensioned so that when the throttle insert 31 is inserted into the nozzle 9, at both ends of the primary throttle channel 47 has a passage opening for the passage of Liquid from the reservoir 3 in the annular space 19 remains free.
  • the cross section of these passage openings can be optimized according to the dispensed liquid and the respective shape of the nozzle 9.
  • nozzle 9 of various tubes Since at least the distal region of nozzle 9 of various tubes is standardized, a multiplicity of different tubes can be equipped with comparatively few embodiments of the throttle insert 31. Since the throttle insert 31 is inserted in the interior of the nozzle 9 in the output channel 13, standardized closures can be used in such tubes and.
  • an end-side cover section 50 of the throttle insert 31 adjoins with a peripheral contact ring 49 to the lateral surface 33 at.
  • the central region of the cover section 50 is disc-shaped or designed as a socket-like depression 53.
  • one or more grooves are provided on the contact ring 49, which are intended to limit one or more secondary throttle channels 51 together with the adjacent part of the neck 9, if the contact ring 49 in the proximal portion 9a on the inside of the Stutzens 9 is in contact or in contact with this inside.
  • the ends of these secondary throttle channels 51 open into the annular space 19 and into an output space 55 which is connected to the discharge opening 11 and which is bounded by the proximal portion 9 a of the nozzle 9 and by the cover portion 50 of the throttle insert 31. If the cover portion 50 adjacent to the contact ring 49 has a recess 53, this can be used for dosing a certain amount of liquid to be dispensed.
  • liquid 3 is first conveyed into pan 53 by squeezing reservoir 3 until it is full. If the liquid level exceeds the edge of the contact ring 49, the excess liquid can be sucked back into the reservoir 3 by a negative pressure in the reservoir 3, which is caused by the elastic restoring force of the tube jacket 5.
  • the throttle insert 31 can be arranged axially in the neck 9 such that it does not bear directly on the proximal portion 9a of the neck 9, so that an annular gap remains free between the contact ring 49 and the proximal portion 9a of the neck 9.
  • This gap connects the annular space 19 in addition to or as an alternative to the secondary throttle channels 51 with the discharge chamber 55.
  • the external thread 15 is a M9x1.5 thread.
  • the corresponding throttle insert 31 has a maximum outer diameter D3a of 5.5 mm and a height H of 3.2 mm.
  • the number of primary throttle channels 47 is 1 and the number of secondary throttle channels 51 is 3, wherein all the throttle channels 47, 51 evenly distributed with angular intervals of 90 ° at the throttle insert 31 are arranged.
  • the invention also includes other embodiments of the tube 1 and / or the throttle insert 31, in which in particular the number, the arrangement, the cross sections, and the shape of the primary throttle channels 47 and / or the secondary throttle channels 51 may be different.
  • primary Throttle channels 47 and secondary throttle channels 51 offset from each other. This favors a further increase in the flow resistance.
  • FIGS. 6, 7, and 8 show further embodiments of tubes 1 with throttle inserts 31.
  • the proximal portion 9a of the neck 9 comprises a slightly conical cannula 10, at the narrower end of which the delivery opening 11 is arranged, and whose broader end is connected via an annular flange 12 to the distal portion 9b of the neck 9.
  • the external thread 15 is a M11x1.5 - thread.
  • the throttle insert 31 has a maximum outer diameter D3a of 7.2 mm and a height H of 3.6 mm. Compared to the embodiment of the throttle insert 31 according to FIG. 3 the contact ring 49 is wider.
  • the diameter of the pan 53 is comparatively small and the secondary throttle channels 51 extend radially to the tube axis X out beyond the inner edge of the annular flange 12, so that the opening into the discharge chamber 55 ends are no longer covered by the annular flange 12.
  • the in FIG. 7 shown further tubes 1 comprises a M22x1.5 - external thread 15.
  • the throttle insert 31 has a maximum outer diameter D3a of 18.3 mm and a height H of 5.3 mm. Compared to the embodiment of the Throttle insert 31 according to FIG. 3 is the outer diameter D3a compared to the height H significantly larger.
  • the contact ring 49 is a comparatively narrow ring whose width and height can be between 0 and 1 mm, for example. Correspondingly short are the secondary throttle channels 51.
  • the pan 53 in the cover section 50 comprises, adjacent to the contact ring 49, an outer ring 53a or a first annular step, which lies substantially at the base level of the contact ring 49.
  • the outer ring 53a is a flange-like edge of an inner socket 53b, the bottom of which lies at a significantly lower level between that of the distal outer edge 35 and the outer ring 53a.
  • the inner edge of the outer ring 53a has a larger radius than the discharge opening 11, so that the outer ring 53 is completely covered by the proximal portion 9a of the nozzle 9.
  • the proximal portion 9a of the neck 9 is formed as an annular collar adjoining the distal portion 9b, the inner edge of which is a tubular portion 21, the proximal end of which defines the dispensing opening 11.
  • the shape and size of the throttle insert 31 is matched to the shape of the nozzle 9, that the distal end portion of the tube section 21 is immersed in the pan 53 and axially overlaps the edge of the pan 53, such that the inner wall of the pan 53 and the end region of the pipe section 21 form an annular gap 23 which connects the annular space 19 with the discharge space 55.
  • the pipe section 21 may, as in FIG. 8 be chalked outside.
  • the pan wall is inclined accordingly.
  • a drip tap 46 into the distal end of the pipe section 21 into it.
  • the formation of drops of the liquid to be dispensed can be influenced by properties of the pipe section 21 and of the throttle insert 31, in particular also of the dripping pin 46.
  • surface properties such as roughness and surface tension have a significant influence on the type of droplet formation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
EP17165003.9A 2016-05-03 2017-04-05 Tube doté d'un insert d'étranglement Active EP3241781B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17165003T PL3241781T3 (pl) 2016-05-03 2017-04-05 Tubka z wkładką dławiącą

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00585/16A CH712432A1 (de) 2016-05-03 2016-05-03 Tube mit Drosseleinsatz.

Publications (2)

Publication Number Publication Date
EP3241781A1 true EP3241781A1 (fr) 2017-11-08
EP3241781B1 EP3241781B1 (fr) 2019-02-06

Family

ID=58530390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17165003.9A Active EP3241781B1 (fr) 2016-05-03 2017-04-05 Tube doté d'un insert d'étranglement

Country Status (6)

Country Link
US (1) US10093461B2 (fr)
EP (1) EP3241781B1 (fr)
CA (1) CA2965227C (fr)
CH (1) CH712432A1 (fr)
ES (1) ES2721772T3 (fr)
PL (1) PL3241781T3 (fr)

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CH710688A1 (de) * 2015-02-02 2016-08-15 Götschi Rudolf Antitropfvorrichtung.
KR102076658B1 (ko) * 2019-05-31 2020-02-13 임종수 튜브용기 내의 액상 내용물을 방울 형태로 배출시키는 배출장치
KR102279627B1 (ko) * 2021-03-02 2021-07-21 한국콜마주식회사 내용물 용기
EP4302638A1 (fr) 2021-03-02 2024-01-10 Kolmar Korea Co., Ltd. Récipient pour différents contenus

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US20110125111A1 (en) * 2008-07-31 2011-05-26 Laboratories Thea Bottle for packaging liquid that is to be dispensed drop by drop, with antibacterial protection
WO2013075256A1 (fr) 2011-11-25 2013-05-30 Hoffmann Neopac Ag Insert pour un orifice de tube de distribution de gouttes

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US20170320641A1 (en) 2017-11-09
ES2721772T3 (es) 2019-08-05
PL3241781T3 (pl) 2019-07-31
CH712432A1 (de) 2017-11-15
CA2965227A1 (fr) 2017-11-03
US10093461B2 (en) 2018-10-09
EP3241781B1 (fr) 2019-02-06
CA2965227C (fr) 2023-03-21

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