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
  • B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
  • B65D83/60—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with contents and propellant separated
  • B65D83/62—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with contents and propellant separated by membranes, bags or the like

Definitions

• the invention relates to a dispensing valve with a bag for dispensing pressurized liquid, foam, gel or the like.
• a chamber pack is known from WO 90/10583, in which a flexible inner bag contains chemicals that produce compressed gas.
• the inner bag consists of a multi-layer plastic film with aluminum lamination on the outside.
• the inner layer of the film is made of polyolefms.
• the bag is welded directly to the valve body, which is also made from polyolefms.
• Polyolefms have the property of being permeable to organic media. If an organic medium such as butane is used as a pressure medium for compressing the bag, then the use of polyolefins for the valve body leads to pressure equalization between the bag and the contents of the container by diffusion. It has also been found that a solvent can diffuse out of the bag beyond the valve body.
• EP 0 697 348 B1 discloses a structural unit consisting of a dispensing valve and a bag welded to it.
• the valve body is not made of a plastic that can be welded to polyolefms, but a plastic that is not permeable to organic media is used.
• the bag is attached to the valve body by a mechanical clamp.
• the bag is provided with an opening in a non-welded, folded edge region, through which an extension body arranged in the bag protrudes with a tubular extension.
• the neck body is welded to the inside of the bag in the bag. Attachment body and valve body are locked together.
• Such a dispensing valve with a neck body welded in the bag leads to increased production and assembly costs.
• a dispensing valve with a bag is known in which .
• an extension piece is arranged inside the bag in a folded edge area.
• the attachment body is held on the bag by means of a clamping ring arranged on the outside of the valve bag.
• a second clamping device fixes the attachment body with the valve body.
• the high number of parts results in increased manufacturing and assembly costs.
• the invention has for its object to provide a dispensing valve with a bag that is not permeable to organic media and in which the bags can be easily and safely attached to the valve body in terms of production and assembly technology.
• the object is achieved by a delivery valve with the features from Claim 1 or from Claim 16.
• Advantageous refinements form the subject of the subclaims.
• the dispensing valve according to the invention is connected to a bag and is used for dispensing pressurized liquid, foam, gel or the like.
• the bag consists of a flexible film material and is welded flat in at least one edge area in two layers one above the other. Furthermore, the valve has a receiving body which is welded in the edge region between the layers of the film material.
• the valve body of the dispensing valve is made of a plastic material that is largely impermeable to organic media and has a tubular section.
• the receptacle body and valve body either have a tubular extension or a corresponding receptacle for this, wherein if the receptacle body has an extension, the valve body has the corresponding receptacle and, if the valve body has the extension, the Receiving body is provided with the appropriate receptacle.
• the receptacle body and valve body are connected to one another via a clamp connection, which is preferably designed as a snap or snap connection. It is initially irrelevant whether the tubular extension is formed on the valve body or on the receiving body.
• the clamp connection between these bodies is produced by inserting the tubular extension into the receptacle and fixing it in the receptacle.
• a sealing element is arranged between the receiving body and the valve body.
• the sealing element at least partially covers the receiving body on its side facing the valve body.
• the dispensing valve according to the invention is easy to assemble with its few components. In addition, it is adequately sealed by the use of a valve body that is not permeable to organic media and by the sealing element.
• the receiving body which can be welded to the film material of the bag, is generally made from a material that is permeable to organic media. Diffusion of the organic medium is prevented by the sealing element between the receiving body and the valve body, as a result of which pressure equalization is prevented and a seal is achieved.
• the extension has a tubular section which opens into a widened end section.
• the end section is preferably frustoconical and tapers towards its free end of the extension.
• the corresponding receptacle has a smaller diameter in its opening section than in a section spaced from the opening. In the connected state, the widened end section of the extension engages behind the shoulder in the receptacle.
• the sealing element preferably has the shape of a flat ring and is made of an elastic material.
• a material for the sealing element preferably a BUNA ® is used, which has elastic properties and prevents diffusion of organic media.
• a synthetic BUNA N is preferably used.
• the receiving body has a circumferential, pointed ring on its contact surface.
• the sealing element is pressed onto the ring, so that its sealing effect is enhanced.
• the recording body has a pointed oval cross section, the tips of which point towards the contact surface of the layers of the bag.
• the pointed oval body extends with its longitudinal direction along the edge of the bag.
• the receiving body is approximately flush with the edge of the bag, so that the receiving body is sealed laterally and has a pointed oval, exposed top, which faces the valve body.
• the sealing element covers this area at least partially.
• the extension is molded onto the valve body and the receiving body is provided with the receptacle.
• the extension is integrally formed on the receiving body and the receptacle for the extension is provided in the valve body.
• the welding side of the film material is coated with PE, PP and / or PET.
• the receiving body which can be welded to the film material consists of PBT, PE or PT, PBT and PET, PE and PE as well as PT and PT being preferably used for a welded connection.
• the valve housing preferably consists of POM, in particular polyacetals, which is not permeable to organic media.
• Fig. 1 is a perspective view of a dispensing valve with a bag in an aerosol can in axial section, in which the extension is integrally formed on the receiving body and
• FIG. 2 shows a perspective view of a dispensing valve with a bag in an aerosol can in axial section, in which the extension is integrally formed on the valve body, and
• FIG. 3 is an enlarged, perspective view of the connection of the receiving body and the valve body for the dispensing valve from FIG. 2.
• the dispensing valve shown with a bag comprises a valve cover 2, which is crimped to the container 1 in a known manner, an elastic seal 3, preferably made of synthetic rubber Buna N, which is essentially impermeable to propellant, being provided between the container 1 and the valve cover 2.
• the container 1 has at its upper end, crimped with the valve cover 2, an opening through which the bag 11 is inserted into the container 1.
• the valve cover 2 receives a valve body 6, which is sealed with respect to the valve cover 2 by an elastic disk 5, a valve needle 4 being arranged in the valve body 6, axially against the elastic disk by a compression spring 7 via the support surface 13 on the valve needle 4 5 presses and thus holds the dispensing valve in the closed starting position.
• the valve needle 4 can be operated from the outside, so that the valve needle 4 against the action of a compression spring 7 in the axial direction in the valve body 6 from a Closing in an open position and vice versa.
• the compression spring 7 is supported on a seat in the lower region of the valve body 6 and on the valve needle 4 itself.
• the bag 11 which consists of a laminate of preferably nylon or polyester as the outer layer, aluminum foil as the middle layer and polyethylene film as the inner layer, is closed in the non-folded edge regions by means of weld seams 12, the weld seam 12 on the bag 11 being the same as in FIG Bag 11 protruding receiving body 15 is welded gas-tight.
• the receiving body 15 can consist of the easily weldable polyolefms or of other materials that can be welded to the bag.
• a receptacle 14 On the valve body 6 there is a receptacle 14 on the side facing away from the valve cover 2, which receptacle has a cylindrical design and receives an extension 10 of the receiving body 15 welded into the bag 11 for attachment to the valve body 6.
• At least one seal 8 is arranged between the receptacle 14 and the welded-in receptacle body 15. In the variant shown in FIG. 1, the seal 8 covers the entire front surface 16 of the welded receiving body 15.
• the frustoconical end region 10 of the extension 9 and the receptacle 14 are preferably designed as a clip connection, which seals the seal 8 in the axial direction between the receptacle 14 and the front surface 16 of the welded receiving body 15 is clamped in, so that the front surface 16 is sealed gas-tight with the adjoining extension 10.
• the contact area of the valve body is enlarged by a circumferential flange 17.
• the seal 8 is designed as a flat circumferential ring around the extension 9.
• the recording 14 has a shoulder 18 which narrows the cross section and which is engaged behind by the extension in the connected state.
• the bag 11 extends essentially over the entire. Length of the interior of the container 1.
• the bag contents such as liquids, foams, gels or the like and the pressurized gas such as the environmentally friendly butane, e.g. as container contents, are filled into the bag 11 or into the container 1 in the known manner via the dispensing valve.
• the bag 11 expands in the container 1 and takes up a substantial part of the container volume.
• the valve needle 4 is pressed down against the action of the drain spring 7, so that the contents of the bag are squeezed out through expansion of the compressed gas in the container 1, namely through the valve needle 4.
• the dispensing valve can, depending on requirements, be the known metering valves, tilting valves or, as shown here in FIG. 1, continuous spray valves.
• Fig. 2 shows an alternative embodiment, in which the same elements are provided with the same reference numerals.
• the valve body 6 has an integrally formed extension 9 which has a tubular section 20 with a frustoconical end region 22.
• the pointed oval receiving body 15 has a central bore 24 which is connected to the outlet channel 26 of the valve body 6.
• the central bore 24 has at its end facing the valve body a circumferential projection 18 which tapers the cross section of the bore 24.
• the area 22 of the extension 20 latches in the connected position through the projection 18, a force being exerted on the sealing element.
• the sealing element 8 largely covers the surface 28 of the receiving body 15 facing the valve body. Only a triangular, acute-angled area of the receiving body 15 projects beyond the sealing element 8.
• the receiving body 15 has a circumferential, pointed ring 30, which is pressed against the sealing element 8 and additionally seals the connection.
• the valve body 6 is made of POM, the receiving body 15 of PE, which can be welded to an inner layer of PE of the bag.

Landscapes

• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Bag Frames (AREA)
• External Artificial Organs (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)
• Packages (AREA)
• Self-Closing Valves And Venting Or Aerating Valves (AREA)
• Coating Apparatus (AREA)

Priority Applications (2)

Applications Claiming Priority (3)

Related Child Applications (1)

Publications (2)

Family

ID=7974269

Family Applications (2)

Family Applications After (1)

Country Status (11)

Cited By (2)

Families Citing this family (11)

Family Cites Families (18)

• 2002
  • 2002-08-15 DE DE20212802U patent/DE20212802U1/de not_active Expired - Lifetime
• 2003
  • 2003-08-07 AU AU2003260385A patent/AU2003260385B2/en not_active Expired
  • 2003-08-07 WO PCT/EP2003/008785 patent/WO2004022452A1/fr not_active Ceased
  • 2003-08-07 DK DK03793702T patent/DK1532057T3/da active
  • 2003-08-07 EP EP03793702A patent/EP1532057B1/fr not_active Expired - Lifetime
  • 2003-08-07 NZ NZ537888A patent/NZ537888A/xx not_active IP Right Cessation
  • 2003-08-07 US US10/524,160 patent/US20060237486A1/en not_active Abandoned
  • 2003-08-07 CA CA2495367A patent/CA2495367C/fr not_active Expired - Lifetime
  • 2003-08-07 DE DE50308985T patent/DE50308985D1/de not_active Expired - Lifetime
  • 2003-08-07 JP JP2004533337A patent/JP4182528B2/ja not_active Expired - Fee Related
  • 2003-08-07 EP EP07025076A patent/EP1932775A3/fr not_active Withdrawn
  • 2003-08-07 AT AT03793702T patent/ATE383316T1/de active
  • 2003-08-07 ES ES03793702T patent/ES2297263T3/es not_active Expired - Lifetime

Non-Patent Citations (1)

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