EP4108598A2 - Cartouche dotée d'une pièce tête conçue sous la forme de feuille et manchon de support - Google Patents

Cartouche dotée d'une pièce tête conçue sous la forme de feuille et manchon de support Download PDF

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Publication number
EP4108598A2
EP4108598A2 EP22177482.1A EP22177482A EP4108598A2 EP 4108598 A2 EP4108598 A2 EP 4108598A2 EP 22177482 A EP22177482 A EP 22177482A EP 4108598 A2 EP4108598 A2 EP 4108598A2
Authority
EP
European Patent Office
Prior art keywords
cartridge
wall
cartridge wall
section
piston
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.)
Pending
Application number
EP22177482.1A
Other languages
German (de)
English (en)
Other versions
EP4108598A3 (fr
Inventor
Hanns-Ulrich Saier
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.)
Saier Verpackungstechnik & Co KG GmbH
Original Assignee
Saier Verpackungstechnik & Co KG GmbH
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 Saier Verpackungstechnik & Co KG GmbH filed Critical Saier Verpackungstechnik & Co KG GmbH
Publication of EP4108598A2 publication Critical patent/EP4108598A2/fr
Publication of EP4108598A3 publication Critical patent/EP4108598A3/fr
Pending legal-status Critical Current

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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
    • B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
    • B65D83/0072—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by a piston or a movable bottom or partition provided in the container or the package
    • 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
    • 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
    • B05C17/00586—Means, generally located near the nozzle, for piercing or perforating the front part of a cartridge
    • 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

Definitions

  • the invention relates to a cartridge, in particular for silicones, comprising: a circumferential, cylindrical cartridge wall which is designed as a film, and a head piece which is connected to the cartridge wall in a sealing and non-detachable manner.
  • Plastic jointing, sealing and other filling substances are usually packaged in dimensionally stable cartridges.
  • Such cartridges generally have a peripheral, cylindrical cartridge wall made of a dimensionally stable material.
  • a cartridge At a first end of the cylindrical cartridge wall, such a cartridge has a head piece, on which an outlet for one or more filling substances accommodated in the cartridge is usually formed.
  • the outlet can, for example, form an opening in a threaded connector, which is used to screw on a nozzle or the like.
  • a piston is introduced into the interior of the cylindrical cartridge wall, which piston can be displaced along a longitudinal direction of the cartridge wall in the direction of the head piece in order to discharge the filling substance(s) from the cartridge via the outlet.
  • Such cartridges are typically placed in a cartridge ejection gun in order to discharge or express the filling substance(s).
  • a push rod presses on the piston via a pressure plate in order to force the filling substances out of the interior of the cartridge via the outlet.
  • foil cartridges are tubular containers that can be cut open at their front end to express the filling substances contained therein.
  • the advantage of foil cartridges is that after the filling substances have been squeezed out, only the foil cartridge has to be disposed of.
  • the volume of waste produced corresponds to the full original volume of the cartridge.
  • empty cartridges often have to be disposed of as hazardous waste. This is required by law, for example, if the filling substance is silicone.
  • Foil cartridges usually cannot be ejected in conventional cartridge ejection guns.
  • a film cartridge ejection device which has a cylindrical tubular body for accommodating the film cartridge, a headpiece which can be placed on the tubular body and has an outlet opening for a mass to be expressed, and a piston body which can be displaced in the tubular body in the direction of the headpiece.
  • the front end of the foil cartridge which protrudes into a neck extension of the head piece, is cut open so that the mass can exit through the neck extension into a nozzle.
  • the piston is pushed forward against the rear end of the foil cartridge by means of a piston rod of a cartridge ejector gun provided with a pressure plate, thereby compressing the foil cartridge as a whole.
  • a spike for piercing the foil cartridge can be provided on an inside of the head piece.
  • a cartridge which has at least one receiving chamber extending in the longitudinal direction for a medium to be discharged.
  • the receiving chamber is characterized by a head part, which has an outlet for the medium, a bottom part and a cartridge wall limited, which is designed as a film.
  • the head part and the bottom part are each designed as a dimensionally stable part.
  • the head part is sealed and permanently connected to the cartridge wall.
  • a protective film is provided on the end of the receiving chamber delimited by the head part, which seals the receiving chamber at this end in a sealed manner.
  • this object is achieved by a cartridge of the type mentioned at the beginning, in which the head piece is designed as a film and has a front section and a fastening section, the front section being spaced apart from a first end of the cartridge wall in the longitudinal direction in an interior space of the cartridge is arranged, and wherein the fastening portion is sealingly and non-detachably connected to an inside of the cartridge wall.
  • the head piece is not designed as a rigid component, but as a film.
  • the film is connected to the inside of the cartridge wall in a sealing and non-detachable manner with the aid of the fastening section.
  • the sealing connection can be produced, for example, by plastic welding or by gluing will.
  • the attachment section typically has a cylindrical geometry and is adjacent to the front section of the film. Due to the cylindrical geometry of the cartridge wall, the end section of the head piece is typically circular and spaced from a first end of the cartridge wall along its longitudinal direction.
  • the spacing of the end section of the head piece from the first end of the cartridge wall creates a free space in the interior of the cartridge, into which a dimensionally stable connecting piece can be inserted, which has an outlet for filling substances stored in the cartridge (see below). In this way, the flexibility when using the cartridge can be increased, since differently designed connecting pieces can be inserted into the cartridge.
  • the film, which forms the cartridge wall overmoulded during production with the liquid plastic, which forms the head part after cooling. Shrinkage of the film can occur when overmoulding the film forming the cartridge wall.
  • a head piece that protrudes radially beyond the cartridge wall has the disadvantage described above that a support sleeve, which is used when dispensing the filling substances, can spread open when pushed on in the longitudinal direction on the outside of the cartridge wall and possibly in the area of the head piece. If the connecting piece is inserted into the interior of the cartridge, the protruding problem can be avoided.
  • a longitudinal distance between the first end of the cartridge wall and the end portion of the head piece at least 0.3 cm.
  • the fastening section faces the first end of the cartridge, its length in the longitudinal direction is limited by the distance between the first end of the cartridge and the front section of the head piece.
  • the fastening section should have a sufficient area so that it can withstand the forces when the filling substances are discharged from the cartridge and the head piece does not become detached from the cartridge wall.
  • a sufficient distance between the first end of the cartridge wall and the end section of the head piece is usually also required in order to fix the connecting piece in the cartridge or to secure it against falling out (see below).
  • the cartridge comprises a dimensionally stable connecting piece which is inserted into the cartridge at the first end and which has an outlet for exiting filling substances stored in the cartridge, the connecting piece preferably having a peripheral edge for contact with the inside of the cartridge wall and/or or on an inside of the mounting portion of the header. Since the interior of the cartridge is sealed off by the foil head piece, the material of the dimensionally stable connection piece can be chosen practically freely.
  • the term "rigid” is understood to mean that a component, for example the connection piece, does not change its shape during normal use and can at most be deformed elastically without considerable effort.
  • a foil component eg the foil cartridge wall
  • the thickness of the foil cartridge wall and the foil head piece is generally less than approx. 0.5 mm, possibly less than 0.3 mm or less than 0.2 mm.
  • connection piece can be inserted into the cartridge at the first end at which the head piece is connected to the cartridge wall in a sealing and non-detachable manner.
  • the connection piece is typically inserted in the longitudinal direction into the interior of the cartridge until this, more precisely a plate-shaped section of the connection piece, is in contact with the end section of the film head piece.
  • the connection piece is fixed in the radial direction on the inside of the cartridge wall or the fastening section by the peripheral edge.
  • the diameter of the peripheral edge of the connecting piece can be adapted to the diameter of the inside of the cartridge wall or the inside of the fastening section in such a way that the edge of the connecting piece presses against the inside of the peripheral side wall, so that it is pressed in when it is inserted and secured against falling out will.
  • the outlet of the connecting piece can be, for example, an opening in a socket which is formed on the plate-shaped section of the connecting piece.
  • the socket can be provided with a thread in order to attach a nozzle or the like to this for dispensing the filling substances on the cartridge.
  • the connecting piece in principle, it is possible to permanently connect the connecting piece to the inside of the cartridge wall or to the inside of the fastening section, for example by welding or by gluing.
  • the detachable attachment or attachment of the connector on the cartridge wall also makes it possible to deliver the cartridge to a bottler and to deliver the connector or a desired type of connector to the bottler separately, or you can use the connector already used for a new cartridge continue to use.
  • a latching section on the attachment section of the headpiece preferably in the form of a folded foil section formed to hold the rigid fitment in the cartridge.
  • the latching portion may form a folded end of the attachment portion that is not connected to the inside of the cartridge wall.
  • the latching section can be folded and brought into contact with the inside of the fastening section.
  • the folded film section can be connected to the inside of the fastening section, for example by welding or by gluing.
  • the folded film section serves as a latching section, since when the connection piece is inserted into the cartridge, the peripheral edge of the connection piece is moved past the folded film section until its end facing the first end is located behind the end of the folded film section in the longitudinal direction of the cartridge.
  • the free end of the folded foil section forms a shoulder which effectively prevents the connection piece from moving in the direction of the first end of the cartridge and thus from falling out of the connection piece from the cartridge.
  • the dimensionally stable connection piece has at least one mandrel for piercing the end section of the head piece. As described above, the connecting piece is pushed longitudinally into the interior of the cartridge when it is inserted. The mandrel presses against the end section of the film head piece and pierces it.
  • the end section of the head part has a perforation which is preferably covered by a protective film which is detachably attached to the end section.
  • the perforation makes it easier to pierce the end section of the film header.
  • the perforation can, for example, be introduced into the film by punching, e.g. in the form of a cross-shaped punching or the like.
  • the perforation can be covered by a protective film that is detachably or peelably applied to the end section of the film head part.
  • the peelable protective film is removed by an operator before the fitting is inserted into the cartridge.
  • the use of the mandrel described above or the use of another tool for piercing the end section of the film head piece can be dispensed with. In principle, however, it is also possible in this case to use a head piece which has at least one mandrel in order to pierce the end section of the film head piece.
  • the cartridge comprises a piston which can be inserted into an interior space of the cartridge at a second end of the cartridge wall opposite the first end and which can be displaced in a sealing manner in the longitudinal direction along the cartridge wall.
  • the piston is also a rigid component.
  • a film is attached to a side of the piston facing the interior of the cartridge.
  • the filling substances are completely surrounded by foil components through the foil facing the interior of the cartridge, the foil head piece and the foil cartridge wall.
  • the film can be attached to the side of the piston facing the interior of the cartridge, for example in the IML process, in a single operation, but the film can also be subsequently applied/welded in a separate operation.
  • the piston When transporting the cartridge or if the filling substances are unintentionally heated, the piston can possibly be pushed along the cartridge wall in the direction of the second end of the cartridge and unintentionally detach from the cartridge, so that the filling substances can escape at the second end of the cartridge .
  • This is particularly problematic when using a cartridge with a film cartridge wall, since the frictional forces between the cartridge wall and the piston are reduced in this case compared to a conventional cartridge.
  • the cartridge has a base part which is permanently connected, in particular sealingly, to the cartridge wall, preferably to an inside of the cartridge wall, at a second end of the cartridge wall, with the base part having an opening for inserting the piston into the interior of the Has cartridge, and wherein preferably the bottom part at least partially in the radial direction via a Outside the cartridge wall protrudes.
  • the base part can be a dimensionally stable component, but the base part can also be designed as a film.
  • the bottom part stabilizes the cartridge and also makes it easier to fill.
  • the bottom part is also preferably permanently connected to the inside of the cartridge wall, e.g. welded or glued.
  • the base part can be sealingly connected to the inner wall of the cartridge, but this is not absolutely necessary.
  • the bottom part can have a section that protrudes radially beyond the outside of the cartridge wall, for example in the form of a peripheral edge, which forms a stop for a support sleeve that is pushed from the first end of the cartridge onto the outside of the cartridge wall. In the radial direction, the section preferably protrudes by at least 0.3 mm beyond the outside of the cartridge.
  • the bottom part is preferably essentially ring-shaped so that the piston can be inserted through the bottom part into the interior of the cartridge. Since the cartridge wall itself is formed from a foil, it is advantageous if the bottom part (partially) projects beyond the cartridge wall in the longitudinal direction, since in this way the cartridge can be set up and stored upright.
  • the bottom part has at least one, preferably resilient, retaining element protruding beyond the inside of the cartridge wall, in order to prevent displacement of the piston in the direction of the second end of the cartridge.
  • the holding element or elements are preferably designed in the manner of resilient latching hooks which, starting from a peripheral edge of the base part (angled), are aligned in the direction of the interior.
  • the resilient retaining elements are pressed outwards in the radial direction.
  • the resilient holding elements move inward in the radial direction and thus prevent a displacement of the piston inserted into the cartridge in the direction of the second end of the cartridge.
  • the base part has a plurality of holding elements which are arranged at equal distances from one another in the circumferential direction.
  • the holding elements can be designed in the manner of circular sectors.
  • the holding elements in the form of circular sectors can extend to the center of the base part, but it is usually sufficient if the holding elements protrude inwards only along a radially outer edge of the base part.
  • a second aspect of the invention relates to a cartridge of the type mentioned at the outset, which can be designed in particular according to the first aspect of the invention.
  • the cartridge wall has, in the area of a second end, at least one retaining element and/or one retaining section protruding beyond the inside of the cartridge wall, in order to prevent a movement of a piston that can be displaced in a sealing manner in the longitudinal direction along the cartridge wall in the direction of the second end of the cartridge.
  • the cartridge wall has in the area of the second end at least one holding element or one holding section protruding beyond an outside of the cartridge wall in order to limit a movement of a support sleeve that can be displaced in the longitudinal direction along an outside of the cartridge wall in the direction of the second end of the cartridge.
  • the provision of a base part can generally be dispensed with entirely, since the function of the base part described above, to protect the piston from falling out of the cartridge and to form a stop for the support sleeve, can be taken over by the cartridge wall.
  • sections of the cartridge wall as a whole can be designed as holding sections by suitably deforming them and/or one or more holding elements can be formed on the cylindrical cartridge wall.
  • the deformation of the cartridge wall in the area of the second end can also serve to stabilize the cartridge as a whole.
  • the plunger overhangs at least partially longitudinally the second end of the cartridge wall.
  • the plunger may have a peripheral, e.g. In order to set up the cartridge, however, it is not absolutely necessary for the piston to have a circumferential protruding section; rather, it is sufficient if the piston has a number of protruding areas that can serve as supports for setting up the cartridge.
  • the holding section projecting beyond the inside and/or the holding section projecting beyond the outside is formed by a beaded edge.
  • the foil of the cartridge wall is folded over outwards at the second end to limit the support sleeve from movement towards the second end of the cartridge wall and/or folded inwards to limit the movement of the piston.
  • the folded flanged edge forms a contact surface for the support sleeve.
  • the retaining elements projecting beyond the inside and/or the retaining elements projecting beyond the outside form sections of the cartridge wall that are partially separated (generally punched free) from the cartridge wall.
  • the partially free separated Sections are bonded on at least one side to the remaining cylindrical cartridge wall.
  • the connection of the partially separated sections on the at least one side can be designed, for example, in the manner of a film hinge. Due to the fact that the cartridge wall is designed as a film, the sections of the cartridge wall that are partially separated have a certain flexibility, ie they are typically designed to be elastically resilient.
  • the side along which the partially separated sections are connected to the cartridge wall can be aligned in a plane perpendicular to the longitudinal direction of the cartridge or the cartridge wall.
  • the partially separated sections typically extend in the axial direction, starting from the side of the connection, onto the first end of the cartridge wall.
  • the side of the connection it is also possible for the side of the connection to be aligned at a different angle (different from 90°) to the longitudinal direction of the cartridge wall.
  • the side of the connection can run parallel to the longitudinal direction of the cartridge wall, so that the partially separated sections extend in the radial direction.
  • the retaining elements protruding beyond the inside and/or the retaining elements protruding beyond the outside are formed by folding sections of the cartridge wall that protrude beyond the second end of the cartridge wall, with the protruding sections preferably being at least partially connected to the inside of the cylindrical cartridge wall or at least partially connected, in particular welded, to the outside of the cylindrical cartridge wall.
  • the folding, and typically the additional welding aligns the projecting, folded portions of the cartridge wall toward the first end of the cartridge wall to perform their function as retaining members.
  • the protruding sections can be bent and folded individually, but the protruding sections can also be attached to a peripheral section of the cartridge wall, which itself is bent over as a whole and folded towards the first end of the cartridge wall, thereby forming the protruding sections be aligned towards the first end of the cartridge wall. If necessary, the folded section can also be bent over in order to form the beaded edge described above, which protrudes beyond the outside of the cartridge wall.
  • the cartridge has a support sleeve that includes a cylindrical sleeve wall that abuts an exterior side of the cartridge wall.
  • the support sleeve can be made of a plastic material, but this is not absolutely necessary since the support sleeve is only required to stabilize the cartridge when the filling substances are being dispensed.
  • a support sleeve made of cardboard, paperboard or another suitable material can also fulfill this purpose.
  • the support sleeve can be used together with the rest of the cartridge in a cartridge ejection gun in order to discharge the filling substances from the cartridge.
  • the support sleeve can be attached to the cartridge ejection gun and the cartridge is inserted into the cartridge ejection gun without the support sleeve. In this case, the support sleeve can be used several times. It is only necessary to replace the support sleeve if the support sleeve becomes dirty or damaged when the filling substances are being discharged.
  • the head piece, the piston and/or the support sleeve is/are formed at least partially, in particular completely, from a recycled plastic or they consist of a recycled plastic.
  • a third aspect of the invention relates to a support sleeve, comprising: a cylindrical sleeve wall for contact with an outside of a cartridge wall of a cartridge, which is designed as described above (wherein no rigid connection piece is inserted into the cartridge), wherein at a first end the cylindrical Sleeve wall is attached a dimensionally stable connector for insertion into the cartridge at a first end of the cartridge wall, wherein the connector is preferably connected via at least one predetermined breaking element to the cylindrical sleeve wall of the support sleeve.
  • the dimensionally stable connection piece is integrated into the support sleeve and can be detached from it by breaking through the at least one predetermined breaking point.
  • the predetermined breaking point(s) can be attached in particular to a radially outer edge of the connection piece and can be broken through by applying a force to the end face of the connection piece, for example to a socket formed on the connection piece.
  • the connection piece can be pushed into the interior of the cartridge and brought into contact with the end section of the foil head piece.
  • the force on the fitting can be applied manually by an operator.
  • the force is preferably applied to the connection piece by a cartridge ejection gun, into which the support sleeve is inserted together with the cartridge.
  • a push rod acts on the piston of the cartridge via a pressure plate, as a result of which the connection piece connected to the support sleeve is pressed against a front plate of the cartridge dispensing gun.
  • a push rod acts on the piston of the cartridge via a pressure plate, as a result of which the connection piece connected to the support sleeve is pressed against a front plate of the cartridge dispensing gun.
  • the film components described above as well as the rigid components are typically made of plastics that are customary for cartridges, possibly with the exception of the support sleeve (see above).
  • the plastics can be, for example, polyamides (PA), polypropylene (PP), polyethylene (PE), in particular high-density polyethylene (HDPE), polybutylene terephthalate (PBT) or polyolefins in general.
  • PA polyamides
  • PP polypropylene
  • PE polyethylene
  • HDPE high-density polyethylene
  • PBT polybutylene terephthalate
  • polyolefins in general.
  • the filling substance is silicone
  • polypropylene cannot usually be used; in this case HDPE is typically used as the material.
  • the plastics can also be recycled plastics.
  • the foil components do not necessarily have to consist of a single material; they can rather be laminates. In a laminate, several layers of foil are glued together.
  • the foil components, in particular the foil cartridge wall, can also be printed.
  • the structure of the film components depends on the respective requirement profile of the cartridge depending on the respective filling substances and can be individually adapted. For example, by choosing suitable foil materials, the barrier properties of the cartridge against oxygen, water vapor or the resistance of the cartridge to aggressive filling substances can be increased.
  • Figures 1 to 3 show a cartridge 1, which has a circumferential, cylindrical cartridge wall 2 and a head piece 3 , both of which are designed as a film.
  • the cartridge 1 also has a base part 4 , which is formed from foil in the example shown, but can also be formed from a dimensionally stable component.
  • the cartridge wall 2 is permanently connected to the head piece 3 at a first end 5a and to the base part 4 at a second end 5b .
  • the cylindrical cartridge wall 2 is formed from a rectangular foil blank that is rolled up and whose adjacent sides are in an in 1 overlapping area shown hatched connected, more precisely welded, will.
  • the cylindrical cartridge wall 2 can be formed from a film tube.
  • the film head piece 3 has a circular or disk-shaped section 3a on the end face and a cylindrical fastening section 3b .
  • the fastening section 3b follows the radially outer edge of the end section 3a and is in the longitudinal direction 8 (cf. 3 ) of the cartridge 1 in the direction of the first end 5a of the cartridge wall 2.
  • the fastening section 3a of the head piece 3 is connected with its in 1 shaded outside shown sealingly and non-detachably connected to an inside 2a of the film cartridge wall 2.
  • the example shown is a welded connection, but the sealing and non-detachable connection can also be an adhesive connection or the like.
  • the bottom part 4 which is essentially ring-shaped, is non-detachable and, in the example shown, also sealingly connected to the inside 2a of the cartridge wall 2.
  • the area on the outside of the ring-shaped peripheral wall of the base part 4, which is connected to the inside 2a of the cartridge wall 2, is in 1 also shown hatched.
  • the base part 4 also has an edge area 7 which protrudes in the radial direction beyond an outer side 2b of the cylindrical cartridge wall 2 .
  • the edge region 7 protrudes beyond the second end 5b of the cartridge 1 not only in the radial direction but also in the longitudinal direction 8 .
  • the protruding edge area 7 of the base part 4 forms a support surface for setting up the cartridge 1.
  • the bottom part 4 also has a central opening 9 through which an in Figures 1 to 3 plunger, not shown, into an interior space 10 of the cartridge 1 (cf. 3 ) can be introduced.
  • the bottom part 4 also has a plurality of over the inside 2a of the cartridge wall 2 above, resilient holding elements 11 on.
  • the resilient holding elements 11 protrude radially inwards from the peripheral edge of the base part 4 and are aligned at an angle to the longitudinal direction 8 of the cartridge 1 in the direction of the first end 5a of the cartridge 1 .
  • the holding elements 11 are formed from a flat blank of the base part 4 by circular sectors being punched into the blank, which are then bent over in order to suitably align the holding elements 11 .
  • the holding elements 11 are only connected to the annular edge of the base part 4 on one side, they have a certain elasticity and are pressed outwards in the radial direction when the piston is inserted via the second end 5b of the cartridge wall into the interior 10 of the cartridge 1 .
  • the front section 3a of the film head piece 3 is spaced from the first end 5a of the cartridge wall 2 .
  • the distance A in the longitudinal direction 8 between the first end 5a of the cartridge wall 2 and the front section 3a of the head piece 3 is approximately 0.5 cm, but the distance A can also be larger or smaller and, for example, approximately 0. 3 cm lie.
  • the spacing of the end section 3a of the head piece 3 from the first end 5a of the cartridge wall 2 makes it possible to insert a dimensionally stable connecting piece 12 into the cartridge 1 .
  • the dimensionally stable connecting piece 12 has an outlet 13 for discharging filler substances, which in the example shown is designed in the form of a threaded connector with a through-opening. A nozzle or the like can be attached to the threaded connector for discharging the filling substances.
  • the connection piece 12 has a plate-shaped section on which a radially outer, cylindrical peripheral edge 12a is formed, which is used to rest on the inside 2a of the cartridge wall 2 .
  • the Fastening section 3b of the head piece 4 protrudes from the end section 3a in the direction of the first end 5a of the cartridge wall 2, when the connecting piece 12 is inserted the peripheral edge 12a is brought into contact with the inside 2a of the cartridge wall 2.
  • the connection piece 12 is pushed in so far when it is inserted into the cartridge 1 that the plate-shaped section of the connection piece 12 is brought into contact with the end section 3a of the head piece 4 .
  • a support sleeve 14 which consists of a cylindrical sleeve wall 19 , is pushed onto the outside 2b of the cartridge wall 2 .
  • the inside 1 The illustrated edge 7 of the base part 4 protruding in the radial direction beyond the outside 2a of the cartridge wall 2 serves as a contact surface for the support sleeve 14 and prevents the support sleeve 14 from being able to be displaced beyond the second edge 5b of the cartridge wall 2 .
  • the fitting 12 has a mandrel 15 mounted in the threaded socket forming the outlet 13.
  • the mandrel 15 is pressed against the end section 3a of the film head piece 3 and pierces it.
  • the mandrel 15 is formed on a cap-shaped section of the outlet 13, which is cut off from the outlet 13 before the filling substances are discharged, so that the mandrel 15 does not stand in the way of the filling substances during discharge.
  • the end-side section 3a of the film head piece 3 can have a perforation, but this is not absolutely necessary.
  • the end section 3a of the film head piece 3 has a perforation in the form of a cross-shaped punch (in figure 5 not shown).
  • the perforation is covered on a side facing the first end of the cartridge wall 2 by a protective film 16 which prevents the filling substances from escaping unintentionally.
  • the protective film 16 can be peeled off and can be pulled off the end section 3a before the connection piece 12 is inserted into the cartridge 1 .
  • FIG. 6 shows the cartridge 1 of 4 and 5 , which additionally has a piston 17 .
  • the piston 17 is inserted into the cartridge 1 at the second end 5b of the cartridge wall 2 and can be displaced in a sealing manner in the longitudinal direction 8 of the cartridge wall 2 .
  • the piston 17 is a dimensionally stable component, on whose side facing the first end 5a of the cartridge wall 2 a film 18 is applied in the example shown.
  • the interior 10 of the cartridge 1 is thus delimited by the foil head piece 3, the foil cartridge wall 2 and the foil 18 attached to the piston 17.
  • the connecting piece 12 and the piston 17 therefore do not come into direct contact with the filling substances, so that a large number of (plastic) materials can be used for these components, in particular also recyclates.
  • connection piece 12 shows the cartridge 1 of 6 in the filled state in a sectional view, in which the connection piece 12 inserted into the cartridge 1 can also be seen.
  • the plate-shaped section of the connection piece 12 has a curvature which is adapted to a curvature on the side of the piston 17 facing the first end 5a of the cartridge 1 .
  • the end-side section 3a of the film head piece 3 is pressed against the curved, plate-shaped section of the connection piece 12 by the filling substances.
  • Holding elements 11, which can also be seen and which are attached to the base part 4 serve as a stop and prevent the piston 17 is pushed out of the cartridge 1 by the pressure that may be applied by the filling substances at the second end 5b.
  • the holding elements 11 act in the manner of barbs, which press against the piston 17 on a side facing the second end 5b of the cartridge 1 when the latter is displaced in the direction of the second end 5b of the cartridge wall 2 .
  • the protective sleeve 14 shown consists of the cylindrical sleeve wall 19.
  • Figure 8a -d each show a support sleeve 14', which differs from that in Figures 3 to 7
  • the protective sleeve 14 shown differs in that, in addition to the cylindrical sleeve wall 19, which is pushed onto an outer side 2a of the cartridge wall 2 in order to stabilize the cartridge wall 2 when the filling substances are discharged, it also has the connection piece 12 described above.
  • the connecting piece 12 is attached to a first end 20a of the cylindrical sleeve wall 19 and is connected to the cylindrical sleeve wall 19 via predetermined breaking elements 21 in the form of webs extending in the radial direction. Due to the presence of the connecting piece 12, the sleeve wall 19 can be injection molded together with the connecting piece in one tool.
  • the cartridge 1 (without the connecting piece 12) is first inserted into the support sleeve 14', as is shown in Figure 8b is shown.
  • the support sleeve 14' with the inserted cartridge 1 is then inserted into a cartridge ejection gun 22 , which is shown very schematically in Figure 8d is indicated.
  • a push rod 23 presses on the piston 17 via a pressure plate 24 in order to force the filling substances out of the interior 10 of the cartridge 1 via the outlet 13 .
  • the cartridge 1 is pressed against an end plate 25 of the cartridge ejection gun.
  • connection piece 12 When it is pressed against the end plate 25 , a force is applied to the connection piece 12 which moves the connection piece 12 into the interior 10 of the cartridge 1 .
  • the peripheral edge 12a of the connection piece 12 has a length which essentially corresponds to the distance A between the front-side section 3a of the foil head piece 3 and the first end 5a of the cartridge wall 2 .
  • the peripheral edge 12a of the connecting piece 12 inserted into the cartridge 1 is flush with the first end 5a of the cartridge wall 2 and also with the first end 20a of the cylindrical sleeve wall 19 .
  • a support sleeve 14, as for example in 3 is shown to be part of the cartridge ejection gun 22 .
  • the cartridge 1 is inserted into the support sleeve 14 of the cartridge dispensing gun 22.
  • the connection piece 12 can be delivered separately and is inserted into the cartridge 1 before the cartridge 1 is inserted into the cartridge ejection gun 22, as described above in connection with FIG Figures 1 to 3 is described. It goes without saying that the cartridge 1 can also be delivered with the connection piece 12 already inserted.
  • the cartridges 1 described above have in common that they have a base part 4 .
  • a base part 4 is not absolutely necessary, as explained below with reference to 9a,b, 10a,b and 11a,b described cartridges 1 is described.
  • the shaping of the cartridge wall 2 can ensure that the piston 17 is held in the cartridge 1 and that the movement of the support sleeve 14 or 14' in the direction of the second end 5b of the cartridge wall 2 is limited.
  • the cartridge wall 2 has, directly at the second end 5b, a first holding section in the form of a first flanged edge 26 that protrudes outwards beyond the outside 2b of the cartridge wall 2, and a second holding section in the form of a second flanged edge that is slightly spaced apart from the second end 5b of the cartridge wall 2 Flanged edge 27 which protrudes beyond the inside 2a of the cartridge wall 2.
  • the two flanged edges 26, 27 are produced by reshaping the material of the cartridge wall 2.
  • the first flanged edge 26 limits the movement of the support sleeve 14 in the direction of the second end 5b of the cartridge wall 2
  • the second flanged edge 27 limits or prevents the movement of the piston 17 in the direction of the second end 5b of the cartridge wall 2.
  • the cartridge 1 shown also has the beaded edge 26 projecting beyond the outside 2b of the cartridge wall 2 .
  • holding elements 11 are formed, which are analogous to those in connection with Figures 1 to 3 described holding elements 11 serve to limit the movement of the piston 17 in the direction of the second end 5b of the cartridge wall 2.
  • the holding elements 11 are formed on a lateral edge of a blank of the cartridge wall 2, which is folded back towards the first end 5a of the cartridge wall 2 after the cylindrical cartridge wall 2 has been produced.
  • the folded-back section of the cartridge wall 2 is welded to the inside 2a of the remaining, cylindrical cartridge wall 2 .
  • the holding elements 11 are as in Figures 1 to 3 designed in the manner of snap hooks and stand over the folded-back section of the cartridge wall 2 in the direction of the first end 5a of the cartridge wall 2 over.
  • the holding elements 11 are attached on one side to the folded-back section of the cartridge wall 2 and press with their free ends against the piston 17 when this is moved towards the second end 5b of the cartridge wall 2.
  • the flanged edge 26 is formed after the folded-back section has been welded by bending the second end 5b of the cartridge wall 2 with the folded-back section (ie with double wall thickness) outwards.
  • the fastening section 3a of the head piece 3 has a latching section which is designed in the form of a folded film section 28 in order to hold the dimensionally stable connecting piece 12 in the cartridge 1.
  • the film section 28 folded back in the direction of the second end 5b of the cartridge 1 is welded to the inside of the fastening section 3b of the film head piece 3 .
  • a free end of the foil section 28 folded back in the direction of the second end 5b of the cartridge wall 2 forms a shoulder with which a free end of the peripheral edge 12a of the connection piece 12 latches when the connection piece 12 is inserted into the cartridge 1 .
  • the connecting piece 12 has a mandrel 15, which can be used to pierce the front section 3a of the foil head piece 3, as described above.
  • the outlet 13 does not have a cap-shaped section that has to be separated before using the cartridge 1; rather, the mandrel 15 is connected to the inside of the outlet 13 or the threaded connector via predetermined breaking points. After the end section 3a of the film head piece 3 has been pierced, the mandrel 15 can be broken out of the connection piece 12 and opens up the opening for the filling substances.
  • first and second holding elements 11a, 11b are designed as sections that are partially separated from the cartridge wall 2 and bent toward the inside 2a of the cartridge wall 2 or toward the outside 2b of the cartridge wall 2, respectively.
  • the first and second holding elements 11a, 11b are rectangular and connected to the cartridge wall 2 with one side in the manner of a film hinge. Breakthroughs are formed on the cartridge wall 2 by the partial separation in the region of the first and second holding elements 11a, 11b.
  • the piston 17 sealingly resting against the inside 2a of the cartridge wall 2 prevents the filling substances from escaping through the openings in the cartridge wall 2 .
  • the holding elements 11a, 11b or the partially separated sections of the cartridge wall 2 from the Figure 10a ,b may deviate from the rectangular geometry shown.
  • the side with which the partially freely separated sections 11a, 11b are connected to the cartridge wall 2 can be aligned in different ways in relation to the longitudinal ash 8 of the cartridge 1:
  • the side of the Connection can be aligned, for example, perpendicular to the longitudinal direction 8 of the cartridge 1, as is the case with the first, outwardly projecting holding elements 11a of FIG Figure 10a is the case that are axially aligned.
  • the side on which the first and second, radially aligned holding elements 11a, 11b are connected is aligned parallel to the longitudinal direction 8 of the cartridge 1.
  • the film can be doubled in order to increase the stability of the cartridge wall 2 in the area of the first and second holding or latching elements 11a, 11b.
  • the foil of the cartridge wall 2 can be folded and the folded portion of the foil can be welded to the outside 2b of the cartridge wall 2. It is also possible for the foil to have several folds or several layers which are welded together in the area of the openings in the cartridge wall 2 in order to increase the stability of the cartridge.
  • FIG. 11a,b show a blank of a cartridge wall 2 and a cylindrical cartridge wall 2 formed from the blank.
  • protruding sections 11a, 11b are formed on the blank of the cartridge wall 2, which are folded back in the direction of the first end 5a of the cartridge wall 2 before or after the formation of the cylindrical cartridge wall 2 by the welding in the overlapping area.
  • the protruding portions 11a, 11b are hereby alternately folded outwards or inwards to form the first and second holding elements 11a, 11b, as shown in FIG Figure 11b is indicated.
  • the protruding folded sections 11a, 11b are welded to the inside 2a of the cartridge wall 2 or to the outside 2b of the cartridge wall 2, but this is not absolutely necessary.
  • a dimensionally stable head part can also be used, which is permanently and sealingly connected to the first end 5a of the cartridge wall 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Dry Development In Electrophotography (AREA)
EP22177482.1A 2021-06-25 2022-06-07 Cartouche dotée d'une pièce tête conçue sous la forme de feuille et manchon de support Pending EP4108598A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021116490.7A DE102021116490A1 (de) 2021-06-25 2021-06-25 Kartusche mit einem als Folie ausgebildeten Kopfstück und Stützhülse

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EP4108598A2 true EP4108598A2 (fr) 2022-12-28
EP4108598A3 EP4108598A3 (fr) 2023-03-01

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EP22177482.1A Pending EP4108598A3 (fr) 2021-06-25 2022-06-07 Cartouche dotée d'une pièce tête conçue sous la forme de feuille et manchon de support

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EP (1) EP4108598A3 (fr)
DE (1) DE102021116490A1 (fr)

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE8901554U1 (de) 1989-02-10 1989-06-08 Ritter, Franz Peter, Ing.(grad.), 8933 Untermeitingen Folienkartuschen-Ausdrückvorrichtung
EP2768620B1 (fr) 2011-10-17 2018-01-17 Sulzer Mixpac AG Cartouche et cartouche à plusieurs composants

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DE7735962U1 (de) 1977-11-24 1978-04-06 Durol Gmbh & Co Kg Kartusche zur Aufnahme zweier unterschiedlicher Komponenten
AU1599788A (en) * 1987-03-04 1988-09-26 Package Research Corporation Toothpaste dispenser
GB8726437D0 (en) * 1987-11-11 1987-12-16 Dow Corning Sealant cartridge
EP0351441A1 (fr) * 1988-07-21 1990-01-24 Alfred Fischbach Kunststoffspritzgusswerk Cartouche pour masses plastiques
DE9311227U1 (de) * 1993-07-27 1993-09-16 Alcan Deutschland GmbH, 37075 Göttingen Ausdrückkolben für einen hohlzylindrischen Vorratsbehälter aus Aluminium mit deckelseitigem Verschlußteil mit Ausgabeöffnung für stark diffundierende Stoffe
DE19711249A1 (de) 1997-03-18 1998-09-24 Topic Anton Kartusche mit verminderter Falschluft
JP3636052B2 (ja) * 2000-09-25 2005-04-06 サンスター技研株式会社 軟質容器の製造方法及び高粘調液充填体
US6796460B2 (en) * 2001-06-14 2004-09-28 Hosokawa Yoko Co., Ltd Cartridge for fluid material and dispensing apparatus for such a cartridge
JP5133272B2 (ja) 2009-01-13 2013-01-30 キユーピー株式会社 カートリッジ及びそれを用いたカートリッジ式ガンディスペンサ
ES2470240T3 (es) * 2011-07-15 2014-06-23 Sulzer Mixpac Ag Medio de seguridad del pistón
EP2768619B1 (fr) 2011-10-17 2017-04-19 Sulzer Mixpac AG Cartouche à plusieurs constituants
DE102019111619A1 (de) * 2019-05-06 2020-11-12 Ritter Gmbh Kartusche mit Kopfstück
JP7086399B2 (ja) 2019-05-15 2022-06-20 日本ウイリング株式会社 カートリッジ及びカートリッジの製造方法
EP3834951A1 (fr) 2019-12-13 2021-06-16 Hilti Aktiengesellschaft Cartouche pour un dispositif d'extrusion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8901554U1 (de) 1989-02-10 1989-06-08 Ritter, Franz Peter, Ing.(grad.), 8933 Untermeitingen Folienkartuschen-Ausdrückvorrichtung
EP2768620B1 (fr) 2011-10-17 2018-01-17 Sulzer Mixpac AG Cartouche et cartouche à plusieurs composants

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EP4108598A3 (fr) 2023-03-01

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