EP1845033A1 - Cartouche pour masses exprimables - Google Patents

Cartouche pour masses exprimables Download PDF

Info

Publication number
EP1845033A1
EP1845033A1 EP07105555A EP07105555A EP1845033A1 EP 1845033 A1 EP1845033 A1 EP 1845033A1 EP 07105555 A EP07105555 A EP 07105555A EP 07105555 A EP07105555 A EP 07105555A EP 1845033 A1 EP1845033 A1 EP 1845033A1
Authority
EP
European Patent Office
Prior art keywords
lip
cartridge according
openings
piston
cartridge
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
EP07105555A
Other languages
German (de)
English (en)
Other versions
EP1845033B1 (fr
Inventor
Achim Helmenstein
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.)
Fischbach KG Kunststoff Technik
Original Assignee
Fischbach KG Kunststoff Technik
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
Priority claimed from DE200610017408 external-priority patent/DE102006017408A1/de
Priority claimed from DE200610025873 external-priority patent/DE102006025873A1/de
Application filed by Fischbach KG Kunststoff Technik filed Critical Fischbach KG Kunststoff Technik
Priority to PL07105555T priority Critical patent/PL1845033T3/pl
Publication of EP1845033A1 publication Critical patent/EP1845033A1/fr
Application granted granted Critical
Publication of EP1845033B1 publication Critical patent/EP1845033B1/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
    • 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
    • B05C17/00576—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
    • B05C17/00579—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 comprising means for allowing entrapped air to escape to the atmosphere
    • 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
    • B65D2205/00—Venting means
    • B65D2205/04—Venting means for venting during the initial insertion of a piston

Definitions

  • the invention relates to a cartridge for auspressbare masses with a tubular cartridge body and a piston displaceable therein, wherein the piston has a front piston breast and a circumferential side wall and at the front end of the side wall at least two lips are arranged one behind the other.
  • Cartridges for auspressbare masses consist of a tubular cartridge body, in which the mass is filled.
  • the cartridge body is closed at the front end and the filling of the mass takes place from the open rear end. Subsequently, the piston is also inserted from the rear end into the cartridge body to seal it.
  • the piston must meet various requirements, in detail in DE 20 2005 000 531 U1 are explained. Thus, during the setting of the piston, a venting of the interior of the cartridge must be made so that the enclosed mass contains no air that would lead to interruptions of the strand produced during pressing. In addition, air or water vapor trapped in the cartridge would result in premature curing.
  • the piston must also perform volume compensation when the mass is hot-filled. For this purpose, it has to slide on the cartridge wall in order to be able to follow the shrinkage process without sucking in air. Another requirement is to prevent the trailing of mass after completion of the Auspressvorganges.
  • the piston must also ensure the storage stability of the cartridge contents by sealing and prevent the ingress of air-oxygen and water vapor. Finally, during the squeezing process, despite the increased internal pressure in the cartridge, it must completely seal the cartridge contents to the outside.
  • a ventable piston for a cartridge for receiving pasty material is described.
  • the piston is formed in two parts and consists of a piston part and a cover part. After venting, the cover part closes the venting path. In this case, air can only be dissipated if it is in the area of the vent hole.
  • DE 100 29 799 A1 describes a cartridge with a displaceable in a cartridge body piston.
  • the piston contains at a distance from the piston breast an obliquely rearwardly directed, mounted in the piston spreader. By the pressure during advancement of the piston of the spreader presses the front portion of the side wall against the wall of the cartridge body.
  • the preamble of claim 1 is based on a cartridge according to DE 20 2005 000 531 U1 ,
  • the piston closing off the cartridge body has at the front end of its side wall two annular lips, of which the rear lip protrudes radially outwards and bears against the inner wall of the cartridge body with prestressing.
  • the front lip includes circumferentially spaced slots. In a pressure exerted on the piston mass is to flow through the slots in the formed between the lips pocket and gradually fill them from bottom to top. As a result, the rear sipe is spread outwards and lies against the inner wall of the cartridge body, whereby the mass is prevented from coming backwards.
  • the present invention has for its object to provide a cartridge of the cartridge body and piston, which meets the above requirements and in particular ensures good ventilation, a low-friction piston running and a good seal in the storage condition and during extrusion.
  • the cartridge according to the invention has the features of claim 1.
  • discontinuities are provided on the rear lip and / or on the inner surface of the cartridge body, which form passages in cooperation between the rear lip and the inner surface; the passages in their entirety have a flow resistance which is greater than that of the entirety of the first breakthroughs.
  • the mass is only braked and the passages it is prevented because of the greater flow resistance from penetrating into the region of the side wall outside of the piston. In this way, a good venting of the cartridge when setting the piston is ensured without much effort. On the other hand, it prevents mass from getting to the peripheral wall of the piston and sticking it to the cartridge.
  • the sum of the passage cross sections of the passages is smaller than the sum of the passage cross sections of the first openings.
  • the different passage cross sections are achieved in that the width and / or the height of the first openings is greater than that of the passages of the rear lip.
  • the passages provided in connection with the rear lip either on this lip itself and / or on the inner surface of the cartridge body can have different shapes. They may be breakthroughs that are continuous in the thickness direction of the lip and form through holes or thickness-directional slots. Discontinuities are both surveys and deepening.
  • the protrusions may be, for example, knobs or ribs provided on the inner surface of the cartridge body or on the rear lip. In the case of recesses or recesses may be breakthroughs that go through the entire wall thickness of the rear lip or bare recesses that have a bottom. Also notches, gaps or slits are possible. In any case, the discontinuities interrupt the Rotation geometry of the lip or the inner surface of the cartridge body to create passages. These passages may be permanently open regardless of the axial position of the piston, but they may also be designed so that they are opened only at a certain feed position of the piston.
  • At least one of the lips has in its outer front region at least a partial region in which the wall thickness is greater than in the root region of the lip.
  • the lip in question is preferably the front lip, which forms the passages in the root area.
  • the openings or passages extend over the predominant part of their length (in the direction parallel to the longitudinal axis of the cartridge) within the contour of the inner surface of the cartridge body and they protrude radially beyond this contour only with their outer ends.
  • the lips thus form coating lips, which run along the inner surface of the cartridge body, so that little or no plastic mass reaches the circumferential side wall when the piston is advanced.
  • the first openings are preferably arranged at the foot end of the front lip and the passages at the head end of the rear lip. This results in a serpentine path for the escape of air.
  • the first openings and the passages can generally be arranged in any mutual association. They can be on the same radius or circumferentially offset from each other.
  • a meandering, relatively long, narrow path emerges from the interior of the cartridge to the outside. This path is permeable to air, but offers a high flow resistance for the pasty mass. The mass therefore can not penetrate through the passages to the cartridge wall to the outside and in particular can not flow past between the side wall of the piston and the wall of the cartridge body during the extrusion of the cartridge.
  • the tightness even at elevated internal pressure, improved without reducing the venting ability and without affecting the lubricity of the piston.
  • Figure 1 shows the entire cartridge, which consists of a one-piece cartridge body 10 and the also one-piece piston 11.
  • the cartridge body 10 has a cylindrical shell 12, which is closed at one end by an end wall 13 with detachable outlet spout 14.
  • the piston 11 is inserted.
  • the cartridge body 10 is filled with the mass (not shown) to be squeezed, and then the piston 11 is inserted into the rear end of the cartridge body.
  • the piston 11 has a front piston breast 16 and a circumferential side wall 17.
  • the piston breast 16 is provided with a tip 18 and forms the front end wall of the piston.
  • the side wall 17 is externally provided with rings 19 which are formed here sawtooth. The rings prevent large-scale contact of the side wall 17 on the inner wall of the cartridge body 10th
  • the interior of the piston 11 is hollow. From the piston breast 16, ribs 20 extend in the rearward direction. The rearward ends of the ribs 20 lie approximately in a plane 21 against which the plate of a squeezing tool (not shown) pushes the piston in the cartridge body.
  • Both lips 24, 25 are substantially parallel to the cylindrical portion 22, which forms the transition between the side wall 17 and the piston breast 16. They run over a large part of their length within the outer contour of the side wall 17, with only their outer ends protrude beyond this contour. Between the region 22 and the front lip 24, an annular space 27 is formed ( Figure 5), which opens to the front. Between the lips 24, 25 a further annular space 28 is formed, which opens to the front and the outside. Both spaces 27, 28 narrow towards their rear end.
  • the front annular lip 24 is provided with first apertures 30, which are slots that extend from the front end to the root of the lip 24 and are open to the front. As FIG. 7 shows, the slots are in Arranged angular intervals of 60 °, so that a total of six slots divide the lip 24.
  • the rear lip 25 is also divided by discontinuities D in the form of second openings 31.
  • the second apertures 31 are here slots which extend over the entire length of the lip 25 and extend from the tip to the root.
  • the second openings in each case form a passage 40 for escaping air.
  • the second openings 31 are offset relative to the first openings 30 in a circumferentially offset manner. This means that each second passage 40 is arranged in the middle between two first openings 30. Air that is compressed when setting the piston, passes from the space 27 through the first openings 30 in the space 28 and must flow through this in the circumferential direction to get to the second openings 31.
  • the passages 40 have in their entirety a greater flow resistance than the apertures 30.
  • the sum of the cross-sectional areas of the openings 30 is greater than the sum of the cross-sectional areas of the passages 40.
  • FIG 8 shows the conditions when inserting the piston in the cartridge body 10.
  • the front lip 24 is located with its front end to the Peripheral wall 12 at.
  • the rear lip 25, which projects farther outward than the front lip, is pressed against the peripheral wall 12 at a higher tension.
  • Air which is displaced from the cartridge body when the piston is set, passes through the spaces 27, 28 into the space 35 between the side wall 17 and the peripheral wall. From this space, it can escape to the rear, because the side wall 17 is designed flexibly deformable in the region of the rings 19.
  • the apertures 30, 31 are not circumferentially offset, but circumferentially aligned with each other or arranged on the same radius, although they are offset from each other in the axial direction of the piston.
  • the apertures 30 of the front lip 24 are present only in the foot region of this lip. These are therefore holes or transverse slots, in contrast to the previously described longitudinal slots.
  • the apertures 31 of the rear lip 25 are located only in the tip region of the lip 25, i. in the upper half.
  • the meandering discharge path for the escaping air leads through the apertures 30 (FIG. 10) under deflection into the annular space 28, and there in the axial direction to the front. Then takes place at the passage 40, which passes through the apertures 31, a deflection by almost 180 ° in the space 35 inside.
  • the openings 30, 31 are not aligned with each other, but offset in the circumferential direction against each other.
  • the number of apertures 31 in the rear lip 25 need not necessarily be equal to the number of apertures 30 of the front lip 24. According to Figure 11, the apertures 30 extend over the entire height of the lip 24, while the much smaller apertures 31 are provided only at the upper end of the lip 25.
  • the openings or passages are in any case discontinuities of the wall of the lip in question. They consist of either holes, slots, columns, and / or breaks. Alternatively, the passages through elevations how ribs, knobs or beads are formed, which are supported on the cartridge inner wall and thereby form a circumferentially limited gap.
  • FIG. 9 Another embodiment not shown here largely corresponds to those of Figures 9 and 10, wherein the apertures 30, which are provided only in the foot region of the lip 24, and the apertures 31, which are provided only in the head region of the lip 25, are arranged circumferentially offset from each other ,
  • the piston 11 is also provided with a front lip 24 and a rear lip 25.
  • the front lip openings are provided in the foot area, which are not visible in the drawing, because they are arranged circumferentially offset.
  • the front lip 24 has a region 44 with a wall thickness that is greater than the wall thickness in the root region 46 of the lip. This improves the dimensional stability against damage to this lip when setting the piston and the flexibility for removing the lip from the injection molding tool is not substantially reduced.
  • the discontinuity D which forms the passage 40, consists of a local recess 42 on the outside of the lip 25 at the lip tip.
  • the recesses 42 are distributed circumferentially and circumferentially offset from the openings of the front lip 24.
  • the entirety of the passages 40 has a flow resistance which is greater than that of the entirety of the first passages 30.
  • the number of first breaks does not necessarily have to be equal to the number of discontinuities D. If the discontinuities form a smaller passage area than the first breakthroughs, their number can be greater, which nevertheless allows an increase in the flow resistance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Pens And Brushes (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
EP07105555A 2006-04-13 2007-04-03 Cartouche pour masses exprimables Active EP1845033B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07105555T PL1845033T3 (pl) 2006-04-13 2007-04-03 Kartusz do mas wyciskowych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610017408 DE102006017408A1 (de) 2006-04-13 2006-04-13 Kartusche für auspressbare Massen
DE200610025873 DE102006025873A1 (de) 2006-06-02 2006-06-02 Kartusche für auspressbare Massen

Publications (2)

Publication Number Publication Date
EP1845033A1 true EP1845033A1 (fr) 2007-10-17
EP1845033B1 EP1845033B1 (fr) 2010-07-21

Family

ID=38231093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07105555A Active EP1845033B1 (fr) 2006-04-13 2007-04-03 Cartouche pour masses exprimables

Country Status (5)

Country Link
EP (1) EP1845033B1 (fr)
AT (1) ATE474794T1 (fr)
DE (1) DE502007004447D1 (fr)
ES (1) ES2349296T3 (fr)
PL (1) PL1845033T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010048062A1 (de) 2010-06-22 2011-12-22 Fischbach Kg Kunststoff-Technik Kartuschenkolben
EP2998030A1 (fr) * 2014-09-17 2016-03-23 Sulzer Mixpac AG Piston destiné à une cartouche, cartouche et procédé pour purger l'air d'une cartouche
DE102017203241A1 (de) 2017-02-28 2018-08-30 Fischbach Kg Kunststoff-Technik Kolben für Kartuschen
EP3632575A1 (fr) * 2018-10-02 2020-04-08 Sulzer Mixpac AG Piston de cartouche réutilisable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10029799A1 (de) * 2000-06-16 2001-12-20 Fischbach A Kunststoff Kg Kartusche
DE20319464U1 (de) * 2002-12-10 2004-04-22 Topic, Anton Kolben für eine Kartusche zum Aufbewahren und Auspressen von pastösen Substanzen und Kartusche mit demselben
DE202005000531U1 (de) * 2005-01-14 2005-08-25 Topic, Anton Kolben für eine Kartusche zum Aufbewahren und Auspressen von pastösen Substanzen und Kartusche mit demselben

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10029799A1 (de) * 2000-06-16 2001-12-20 Fischbach A Kunststoff Kg Kartusche
DE20319464U1 (de) * 2002-12-10 2004-04-22 Topic, Anton Kolben für eine Kartusche zum Aufbewahren und Auspressen von pastösen Substanzen und Kartusche mit demselben
DE202005000531U1 (de) * 2005-01-14 2005-08-25 Topic, Anton Kolben für eine Kartusche zum Aufbewahren und Auspressen von pastösen Substanzen und Kartusche mit demselben

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010048062B4 (de) 2010-06-22 2018-08-23 Fischbach Kg Kunststoff-Technik Kartuschenkolben
EP2399846A2 (fr) 2010-06-22 2011-12-28 Fischbach KG Kunststoff-Technik Piston à cartouche
EP2399846A3 (fr) * 2010-06-22 2012-01-18 Fischbach KG Kunststoff-Technik Piston à cartouche
CN102407977A (zh) * 2010-06-22 2012-04-11 菲施巴赫塑料技术有限公司 一种料筒活塞
DE102010048062A1 (de) 2010-06-22 2011-12-22 Fischbach Kg Kunststoff-Technik Kartuschenkolben
US8505785B2 (en) 2010-06-22 2013-08-13 Fischbach Kg Kunststoff Technik Cartridge piston
WO2016041984A1 (fr) * 2014-09-17 2016-03-24 Sulzer Mixpac Ag Piston destiné à une cartouche, cartouche et procédé de ventilation d'une cartouche
JP2018501438A (ja) * 2014-09-17 2018-01-18 ズルツァー ミクスパック アーゲーＳｕｌｚｅｒ Ｍｉｘｐａｃ ＡＧ カートリッジ用ピストン、カートリッジ、及びカートリッジの排気方法
EP2998030A1 (fr) * 2014-09-17 2016-03-23 Sulzer Mixpac AG Piston destiné à une cartouche, cartouche et procédé pour purger l'air d'une cartouche
US10543508B2 (en) 2014-09-17 2020-01-28 Sulzer Mixpac Ag Piston for a cartridge, cartridge and method of venting a cartridge
DE102017203241A1 (de) 2017-02-28 2018-08-30 Fischbach Kg Kunststoff-Technik Kolben für Kartuschen
EP3632575A1 (fr) * 2018-10-02 2020-04-08 Sulzer Mixpac AG Piston de cartouche réutilisable
WO2020069790A1 (fr) 2018-10-02 2020-04-09 Sulzer Mixpac Ag Piston de cartouche réutilisable
CN112752619A (zh) * 2018-10-02 2021-05-04 苏尔寿混合技术有限公司 可重复使用的料筒活塞
US11541416B2 (en) 2018-10-02 2023-01-03 Medmix Switzerland Ag Reusable cartridge piston
CN112752619B (zh) * 2018-10-02 2023-04-18 迈德米斯瑞士股份公司 可重复使用的料筒活塞

Also Published As

Publication number Publication date
PL1845033T3 (pl) 2011-03-31
DE502007004447D1 (de) 2010-09-02
ATE474794T1 (de) 2010-08-15
ES2349296T3 (es) 2010-12-29
EP1845033B1 (fr) 2010-07-21

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