WO1999025627A1 - Contenant a volume variable - Google Patents

Contenant a volume variable Download PDF

Info

Publication number
WO1999025627A1
WO1999025627A1 PCT/NL1997/000649 NL9700649W WO9925627A1 WO 1999025627 A1 WO1999025627 A1 WO 1999025627A1 NL 9700649 W NL9700649 W NL 9700649W WO 9925627 A1 WO9925627 A1 WO 9925627A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
piston
container according
inside wall
dispensing aperture
Prior art date
Application number
PCT/NL1997/000649
Other languages
English (en)
Inventor
Edgar Ivo Maria Van Der Heijden
Original Assignee
Cosmocair C.V.
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 Cosmocair C.V. filed Critical Cosmocair C.V.
Priority to AU54157/98A priority Critical patent/AU5415798A/en
Publication of WO1999025627A1 publication Critical patent/WO1999025627A1/fr

Links

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
    • B65D83/0033—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container

Definitions

  • the present invention relates to a container with variable volume having a substantially cylindrical shape, comprising near one end a dispensing aperture, and a piston which is freely movable in the container, which piston comprises at least one sealing collar which is slidable along the inside wall of the container and provides a seal, the container being intended for filling with a material which can be dispensed by applying a partial vacuum to the dispensing aperture.
  • a container is known in the prior art, and is used in particular as a so-called auxiliary container in an aerosol which is intended for dispensing multicomponent material .
  • Such an auxiliary container often contains a material which must not come into contact with air, water or the contents of the aerosol, otherwise said contents lose their reactive effect.
  • the piston used always comprises two sealing collars, one sealing collar extending near the inside wall of the container in the intended direction of outflow of the material to be dispensed, while the other sealing collar extends near the inside wall of the container in a direction opposite to the intended direction of outflow.
  • the object of the present invention is to provide a solution to the abovementioned disadvantages of the known containers with variable volume, and to this end the invention is characterized in that all sealing collars extend near the inside wall of the container in a direction opposite to the intended direction of outflow.
  • the possibility is thus provided for filling the container through the end situated opposite the dispensing aperture and then inserting the piston in a simple manner.
  • the design of the sealing collar will make the piston easy to insert, and all air present in the container will escape along the sealing collar (s) . This also rules out the need for the use of vacuum.
  • the dispensing aperture can already be closed prior to filling, by means of a membrane or other removable seal, so that a clean dispensing aperture is always ensured.
  • the piston advantageously comprises two sealing collars. It is particularly advantageous if one of the sealing collars is made in one piece with the piston, as an assembly, and the other piston is connected to said assembly. This embodiment will be explained further on with reference to the drawing.
  • the piston preferably comprises a centring means.
  • a centring means for example in the form of a drag anchor.
  • a drag anchor can be a part which is connected to the piston and interacts locally with the inside wall of the container for centring the piston, in order to prevent the latter from tilting (going out of alignment) in the container during movement, and beginning to leak.
  • Such a centring means can be situated at any desired side of the piston, but is preferably situated at the rear side of the piston, viewed in the intended direction of movement during dispensing of material.
  • the piston comprises barbed means which serve to prevent any movement of the piston in a direction opposite to the intended direction of outflow.
  • the barbed means can be designed in the form of, for example, a circumferential collar which is interrupted or otherwise.
  • the material of the barbed means is not particularly limited and can be selected depending on the particular application. It is important here to ensure that the barbed means can be moved in the desired direction of outflow of the material in the container. This can be achieved, for example, by making the barbed means from a flexible or even a soft material and by the barbed means providing the barbed function by the shape thereof.
  • the barbed means are advantageously made of plastic or metal, in particular of steel.
  • the barbed means can also be made largely of plastic, while the barb(s) is (are) made of metal .
  • the barbed means serve to prevent any movement of the piston opposite to the intended direction of outflow.
  • the piston in the presence of the barbed means the piston can be moved only in the direction of the dispensing aperture .
  • the piston can sag out of the container in some cases. Of course, this leads to very undesirable leakage of the material present in the container. This sagging of the piston can occur as a result of creep if the container is made of plastic. It can also be the result of a partial vacuum possibly occurring on the outside of the container at the end situated opposite the dispensing aperture.
  • centring means and the barbed means are advantageously combined in one part .
  • the inside wall of the container preferably extends in a very slightly conical shape in the direction of the dispensing aperture. This means that, in particular in the case of containers and pistons made of plastic, any adverse consequence of creep occurring in plastic as time passes is avoided. Whenever the container has not been used for quite a long time and creep could possibly have occurred in the plastic, at the time of the next use the piston will be moved to a position where the inside wall of the container has a smaller diameter. This ensures that there is always sufficient pre-tension between the sealing collars of the piston and the inside wall of the container. Very slightly conical advantageously means that the diameter of the inside wall of the container decreases by a maximum of 4% over the length of the container.
  • the invention also provides a container with variable volume, filled with material to be dispensed, which is characterized in that said container is a container according to the invention.
  • the material which can be accommodated in the containers according to the invention is not particularly limited and depends on the particular application. Examples are multicomponent adhesives (in which the container, for example, contains the reactive component), paints (in which the container, for example, contains a mixing colour) , cosmetic products (in which the container, for example, contains a reactive component, such as an enzyme concentrate) etc.
  • the material can also be a material which has to be diluted with another material from, for example, a larger container. For example, vitamin concentrates can
  • the material which can be accommodated m the container according to the invention will in practice be liquid, but it is not limited thereto.
  • the material could also be selected from solid material, such as granules, powder and the like, paste-type materials or combinations of liquid, solid and paste-type material.
  • the invention provides an aerosol intended for dispensing a multicomponent material, comprising a mam container and one or more auxiliary containers, which containers are connected to a dispensing assembly which serves to remove material from the containers and dispense it, characterized in that at least one of the auxiliary containers is a container according to the invention.
  • the aerosol generally comprises a main container with a cosmetic base product, while an auxiliary container contains, for example, an active enzyme concentrate which may be not be mixed with the base material until the time of dispensing, because the enzyme material loses its activity on contact with water or
  • Fig. 1 shows a section of a container with variable volume according to the invention
  • Fig. 2 shows a section of part of a container with variable volume according to the prior art
  • Fig. 3 shows a section of the container according to the invention, m which the piston comprises barbed means ;
  • Fig. 4 (a) - (d) shows bottom views of four embodiments of the barbed means.
  • Fig. 1 shows a container 1 according to the invention, which container comprises a dispensing aperture 2 which is sealed by a breakable membrane 3. A material 4 to be dispensed is present in the container.
  • the container preferably has a substantially cylindrical cross-section.
  • the container 1 is open and a piston 6 is inserted, which piston is made in one piece with a sealing collar 7, and to which an additional sealing collar 8 is connected.
  • the additional sealing collar 8 comprises a central opening 9 which is snapped over an upstanding edge 10 with a circumferential protuberance 11 on the piston 6.
  • the sealing collars 7 and 8 in the case of the container according to the invention extend near the inside wall of the container 1 in a direction opposite to the intended direction of outflow of the material .
  • the container 14 comprises a piston 15 with two sealing collars 16 and 17, sealing collar 16 extending in the intended direction of outflow of the material to be dispensed.
  • the piston 6 according to the invention can be inserted very much more easily into the container 1 than the piston 14 according to the prior art.
  • the containers according to the prior art in practice must be filled under vacuum, which is, of course, unnecessarily complicated. In the course of this, air can never be excluded completely, which is a problem in particular in the case of liquids of relatively low viscosity, for example ⁇ 10,000 cp.
  • air can easily move along the edge 12 of the sealing collar 7 and in a similar manner along the sealing collar 8.
  • the space 13 between the two sealing collars serves to absorb a tolerance spread during the filling process; in other words, the accuracy, and thus the costs during filling, can be reduced considerably in the case of the container according to the invention.
  • the presence of the space 13 between the collars makes it possible always to move the piston 6 over the same distance in the container 1. If a little too much material is introduced into the container, the excess material can be absorbed in this space 13.
  • the container 1, the piston 6 and the sealing collars in practice are made of plastic.
  • the process of filling through the open end 5 and subsequently inserting the piston has the advantage that the dispensing aperture 2 can already be sealed, for example by means of a membrane 3 or, for example, by means of a temporary cap or the like.
  • the membrane 3 is designed in such a way that it can be broken by mounting the container, for example, on a dispensing assembly of an aerosol, by sliding the dispensing aperture 2 onto a connecting channel or the like.
  • the sealing collar 8 has a considerably greater axial length than the sealing collar 7, which serves to ensure good centring of the entire assembly of piston and sealing collars 7 and 8 during use.
  • a so-called drag anchor can be used.
  • a drag anchor could be in the form of the sealing collar 8, which does not rest against the inside wall over the full periphery.
  • the sealing collar 8 in that case comprises, for example, axial cut-outs.
  • Such a drag anchor could also, instead thereof, be connected at the opposite side, in other words the front side of the piston 6 , and serve as a centring means there .
  • Fig. 3 shows an embodiment of the container according to the invention in which the piston 6 comprises barbed means. Said barbed means are designed in the form of a part 18 with barbed projections 19. The part 18 is fixed on a projection 20 provided with axial ribs 21 on the piston 6.
  • Fig. 4 (a) - (d) shows bottom views of four embodiments of the part 18, with 2, 3, 4 respectively and five barbed projections 19.
  • an aperture 22 is present, which serves for cooperating with the projection 20 on the piston 6.
  • the part 18 is preferably made of metal and more preferably of steel.
  • the dimensions of the part 18 are not critical provided that these are such that the part is sufficiently strong and flexible to fulfil the intended function thereof.
  • the part 18 can also be made substantially of plastic, whereas the barbed projections 19 are made of metal . It will be clear that many variants of the barbed means are possible. In the embodiment of the part 18 shown in Fig. 3, said part can also serve as a centring means.
  • the part 18 can be formed in many other ways.. For instance, it can be a dish with an upstanding collar.
  • the sealing collar 8 can also be made of metal, in order to serve as a barbed means.

Abstract

Cette invention a trait à un contenant (1) à volume variable, de forme sensiblement cylindrique, pourvu d'un orifice de distribution (2) près de l'une de ses extrémités et comportant un piston (6) se déplaçant librement à l'intérieur dudit contenant. Ce piston (6) est pourvu d'au moins une bague d'étanchéité (7, 8) pouvant glisser le long de la partie intérieure de la paroi du contenant et assurant l'étanchéité du contenant. Ces bagues d'étanchéité viennent se positionner près de la partie intérieure de la paroi du contenant (1) dans la direction opposée à celle du débit sortant, ce contenant étant conçu pour être empli d'une substance (4) pouvant être distribuée du fait de l'application d'une dépression à l'orifice de distribution (2).
PCT/NL1997/000649 1997-11-17 1997-11-26 Contenant a volume variable WO1999025627A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54157/98A AU5415798A (en) 1997-11-17 1997-11-26 Container with variable volume

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1007557A NL1007557C2 (nl) 1997-11-17 1997-11-17 Houder met variabel volume.
NL1007557 1997-11-17

Publications (1)

Publication Number Publication Date
WO1999025627A1 true WO1999025627A1 (fr) 1999-05-27

Family

ID=19766021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1997/000649 WO1999025627A1 (fr) 1997-11-17 1997-11-26 Contenant a volume variable

Country Status (4)

Country Link
AU (1) AU5415798A (fr)
NL (1) NL1007557C2 (fr)
TW (1) TW371288B (fr)
WO (1) WO1999025627A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1020889C2 (nl) * 2002-06-18 2003-12-19 Airspray Nv Afgifte-inrichting.
WO2003106045A1 (fr) * 2002-06-18 2003-12-24 Airspray International B.V. Unite de distribution
EP1529743A2 (fr) * 2003-11-06 2005-05-11 Valpaint S.r.l. Récipient doseur
FR2911123A1 (fr) * 2007-01-10 2008-07-11 Valois Sas Piston suiveur, reservoir et distributeur comprenant un tel piston
EP3569319A1 (fr) * 2018-05-18 2019-11-20 Albéa Services Piston pour réservoir d'un distributeur d'un produit fluide sans reprise d air

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108084653A (zh) * 2016-11-23 2018-05-29 天津经纬正能电气设备有限公司 干式空心电抗器专用化合物及其盛装容器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070728A (fr) * 1952-02-19 1954-08-10 Gestetner Ltd Perfectionnement aux tubes destinés à contenir de l'encre ou analogue
FR1543188A (fr) * 1966-01-05 1968-10-25 Récipient distributeur
FR2350278A1 (fr) * 1976-05-03 1977-12-02 Wischerath Kg Josef Tube a coulisse pour produit en baton
EP0497739A2 (fr) * 1991-01-29 1992-08-05 Wilhelm A. Keller Cartouche de décharge avec cylindre de réserve et piston de convoyage
WO1996032343A1 (fr) * 1995-04-12 1996-10-17 Smithkline Beecham Plc Distributeur
WO1997005040A1 (fr) * 1995-07-28 1997-02-13 Colgate-Palmolive Company Distributeur a pompe a chambre double

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070728A (fr) * 1952-02-19 1954-08-10 Gestetner Ltd Perfectionnement aux tubes destinés à contenir de l'encre ou analogue
FR1543188A (fr) * 1966-01-05 1968-10-25 Récipient distributeur
FR2350278A1 (fr) * 1976-05-03 1977-12-02 Wischerath Kg Josef Tube a coulisse pour produit en baton
EP0497739A2 (fr) * 1991-01-29 1992-08-05 Wilhelm A. Keller Cartouche de décharge avec cylindre de réserve et piston de convoyage
WO1996032343A1 (fr) * 1995-04-12 1996-10-17 Smithkline Beecham Plc Distributeur
WO1997005040A1 (fr) * 1995-07-28 1997-02-13 Colgate-Palmolive Company Distributeur a pompe a chambre double

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1020889C2 (nl) * 2002-06-18 2003-12-19 Airspray Nv Afgifte-inrichting.
WO2003106045A1 (fr) * 2002-06-18 2003-12-24 Airspray International B.V. Unite de distribution
CN100464870C (zh) * 2002-06-18 2009-03-04 国际喷雾有限公司 分配单元、容器组件以及用于组装和填充容器组件的方法
US7588170B2 (en) 2002-06-18 2009-09-15 Airspray International B.V. Dispensing unit
EP1529743A2 (fr) * 2003-11-06 2005-05-11 Valpaint S.r.l. Récipient doseur
EP1529743A3 (fr) * 2003-11-06 2005-05-25 Valpaint S.r.l. Récipient doseur
FR2911123A1 (fr) * 2007-01-10 2008-07-11 Valois Sas Piston suiveur, reservoir et distributeur comprenant un tel piston
EP3569319A1 (fr) * 2018-05-18 2019-11-20 Albéa Services Piston pour réservoir d'un distributeur d'un produit fluide sans reprise d air

Also Published As

Publication number Publication date
NL1007557C2 (nl) 1999-05-18
TW371288B (en) 1999-10-01
AU5415798A (en) 1999-06-07

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