US3706393A - Plastic container and method of making the same - Google Patents

Plastic container and method of making the same Download PDF

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Publication number
US3706393A
US3706393A US161589A US3706393DA US3706393A US 3706393 A US3706393 A US 3706393A US 161589 A US161589 A US 161589A US 3706393D A US3706393D A US 3706393DA US 3706393 A US3706393 A US 3706393A
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United States
Prior art keywords
container
flange
plastic container
sealed
members
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Expired - Lifetime
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US161589A
Inventor
George L Curtis
James H Riesenberg
Ralph E Kelly
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Pelorex Corp
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Pelorex Corp
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Priority to US16158971A priority Critical
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38Details of the container body
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124Tongue and groove joints
    • B29C66/1246Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D11/00Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/02Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material of curved cross-section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832Reciprocating joining or pressing tools
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00Receptacles
    • Y10S220/31Sonic seal

Abstract

A plastic container has a cylindrical body member and a bottom member which are separately molded. The body member is formed with an open bottom and has an annular groove in its bottom edge. The bottom member has a pair of concentric upstanding annular flanges, the outer one fitting within the annular groove in the bottom edge of the body member, and the inner one fitting within the open bottom of the container to abut the lower portion of the interior wall thereof. The parts are permanently sealed to each other by ultrasonic welding, usually after a bottom-filling operation with the container in an inverted position.

Description

United States Patent Curtis et al. I
1451 Dec. 19,1972
[54] PLASTIC CONTAINER AND METHOD OF MAKING THE SAME [72] Inventors: George L. Curtis, Wilton, Conn.; James H. Riesenberg, Amherst; Ralph E. Kelly, Lancaster, both of [21] Appl. No.: 161,589
FOREIGN PATENTS OR APPLlCATlONS 235,199 8/1964 Austria ..220/67 Primary Examiner-Joseph R. Leclair Assistant ExaminerJames R. Garrett Attorney-Conrad Christel et al.
[57] ABSTRACT A plastic container has a cylindrical body member and a bottom member which are separately molded. The body member is formed with an open bottom and has an annular groove in its bottom edge. The bottom member has a pair of concentric upstanding annular flanges, the outer one fitting within the annular groove in the bottom edge of the body member, and the inner one fitting within the open bottom of the container to abut the lower portion of the interior wall thereof. The parts are permanently sealed to each other by ultrasonic welding, usually after a bottom-filling operation with the container in an inverted position. I
6 Claims, 2 Drawing Figures PATENTED 3,706,393
FIG. I.
INVENTORS George L. Curtis Fl 6 James H. Riesenberg Ralph E. Kelly ATTQRN EYS PLASTIC CONTAINER AND METHOD OF MAKING THE SAME BACKGROUND OF THE INVENTION This invention relates to the manufacture of plastic containers and, more particularly, to plastic containers wherein the body portion of the container is made with an open bottom and a bottom wall is subsequently attached thereto.
Plastic containers molded by various methods such as injection molding, blow molding, and otherwise, are of course in widespread use. p
In many plastic containers the bottom wall is molded integrally with the side wall or body of the container but the present invention relates particularly to containers wherein the container body and the upper end or neck portion thereof are molded integrally with the bottom end of the container open. In such containers the bottom member is subsequently applied.
' This type of container is employed in cases where the upper end construction of the container has a relatively constricted neck formation and wherein the body, including the upper wall structure, is desired to be injection molded.
A particular area wherein containerswith separate later-applied bottom members are desirably employed is in the field of aerosol containers wherein the contents of the container and the propellant are deposited in the container with the same in inverted condition, the contents and propellant being deposited in the container before the bottom wall is applied.
In containers having separately applied bottom wall members, the joint between the container body and the bottom wall is frequently'inadequate structurally and hermetically. When containers of this kind are dropped, they commonly plummet downwardly bottom first and usually land angularly on the bottom rim of the container with the frequent result being leakage of the joint between the container body and bottom. In fact the pressure of the contents under impact dropping of the container as heretofore constructed sometimes blows the bottom completely from the container body.
SUMMARY OF THE INVENTION In the present invention the container body or side wall is generally cylindrical and is formed about its lower edge with a groove which receives an annular tongue formation on the bottom element. This much is known in the present art and the container construction of the present invention also includes an upstanding annular flange on the bottom member which engages the lower interior wall of the container body, and which in effect backs up the tongue and groove joint to prevent loosening of this joint by impact, as when the container is dropped. More importantly, this upstanding flange prevents internal pressure in the container from having direct access to the tongue and groove joint per se, which joint has heretofore been the weakest point in container constructions of this general type.
The bottom construction of the present invention, including the tongue and groove joint and the additional internal flange which rigidities the same, is also highly effective in autogenously welding the bottom to the container body as by ultrasonic vibration of the parts since the parts are fixed to each other throughout the tongue and groove construction, and also throughout at least a portion of the abutting surfaces of the interior wall of the container and the adjacent internal upstanding flange of the bottom member.
BRIEF DESCRIPTION OF THE DRAWING DESCRIPTION OF THE ILLUSTRATED I EMBODIMENT In FIG. 1 the numeral 10 designates a generally cylindrical container body having a bottom wall member 11 and an aerosol dispensing means 12 at the upper end thereof. FIG. 2 shows the lower portion of the container of FIG. 1 on a considerably enlarged scale and in an inverted position, in which position the container is filled through its open bottom and then provided with the bottom wall member of the present invention.
In the form shown in FIG. 2, the generally cylindrical side wall of the container may be injection molded or otherwise formed of plastic material and the side wall flares toward its lower edge to provide a lower edge portion of increased thickness. An annular -groove 14 having flaring side wallsis formed in the bottom edge of container body 10 and groove 14 has an annular enlargement or extension at its outer portion as shown at 15 in FIG. 2.
Bottom wall 11 has a tongue formation 16. which fits snugly into groove 14 and an annular flange formation 18 which fits within the .wall of container 10 and abuts the lower interior portion of such wall as shown in F IG; 2. The numeral 20 designates one of a series of circumferentially spaced vertical grooves of generally semicircular cross section which are provided for purposes having to do with the filling and evacuating of the interior of the container and arenot otherwise involved in the present invention.
Excepting where interrupted by the grooves 20 the internal flange 18 seats against the interior wall of container 10 for substantially the full height of flange 18. The tongue 16 and annular flange 18 define in bottom 11 an annular groove which fits over the flange or rib 21 at the bottom of container 10 at the interior wall thereof adjacent to flaring groove 14.
Tongue and groove joints for container bodies are not broadly new but the construction of the present invention differs therefrom in providing the additional internal flange 18 which abuts against the interior of container body 10 and thus stiffens the same and militates against loosening of the tongue and groove joint 14, 16, particularly against impact forces from the outside of the container body and bottom as when the same is dropped.
In FIG. 2 the container is shown fragmentarily in the inverted position after the material to be dispensed and the propellant have been placed in the container through the open bottom and after such other treatment as partial evacuation has been performed. Bottom l060l l 0203 member 11 isshown in its finally assembled, position ready to be permanently sealed to body 10. Thenumeral 25 designates the horn of an ultrasonic vibration apparatus by means of which the abutting surfaces vof the container body and bottom and 11 are fused or weldedHorn 25 in the present instance comprises a cylindrical member having a radial end face which is pressed against bottom member '11 to transmit ultrasonic vibration to the assembly and produce the required welding.
This welding fuses all of the abutting surfaces of tongue 16 of bottom 11 with groove 14 of body member 10 and ordinarily this welding or fusion will extend approximately halfway along the abutting surface of flange 18 and the interior of container 10. The welding or fusing operation may produce a slight flash or roughness at the edges of the welded surfaces and the auxiliary groove portion 15, shown in FIG. 2, insures a smooth bottom finish for the container even through some of the plastic material may ooze from the welded surfaces as at the deepest part of groove 15.
A preferred embodiment of the present invention has been described and illustrated herein to illustrate the principles of the invention but it is to be understood that numerous modifications may be made without departing from the broad spirit and scope of the invention.
We claim:
, tainer body with the outer surface of said second flange in abutment with the lower portion of the interior surface of said container body to reinforce the same against external impact forces, said body member and said bottom member being sealed to each other at least in the area of said first flange formation.
2. A plastic container according to claim 1 wherein said sealing of the body andbottom members extends from said first flange formation inwardly and along at least part of the abutting surfacesof second flange and the interior surface of the container body. Y
3. A plastic container according to claim 1 wherein said members are sealed by an autogenous weld.
4. A plastic container according to claim 1 wherein said members are sealed by an ultrasonic weld.
5. A plastic container according to claim 2 wherein said members are sealed by an autogenous weld.
6. A plastic container according to claim 2 wherein said members are sealed by an ultrasonic weld.

Claims (6)

1. In a plastic container for pressurized contents, a body member comprising a generally cylindrical wall formed with an open bottom end and having a bottom wall member secured thereto, said body member bottom end having an annular groove therein, said bottom member having an annular flange formation fitting snugly within said groove and a second concentric flange fitting within the said bottom end of the container body with the outer surface of said second flange in abutment with the lower portion of the interior surface of said container body to reinforce the same against external impact forces, said body member and said bottom member being sealed to each other at least in the area of said first flange formation.
2. A plastic container according to claim 1 wherein said sealing of the body and bottom members extends from said first flange formation inwardly and along at least part of the abutting surfaces of second flange and the interior surface of the container body.
3. A plastic container according to claim 1 wherein said members are sealed by an autogenous weld.
4. A plastic container according to claim 1 wherein said members are sealed by an ultrasonic weld.
5. A plastic container according to claim 2 wherein said members are sealed by an autogenous weld.
6. A plastic container according to claim 2 wherein said members are sealed by an ultrasonic weld.
US161589A 1971-07-12 1971-07-12 Plastic container and method of making the same Expired - Lifetime US3706393A (en)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127219A (en) * 1976-12-27 1978-11-28 Mabus Richard C Needle dispenser
US4284168A (en) * 1977-08-25 1981-08-18 Braun Aktiengesellschaft Loudspeaker enclosure
US4579242A (en) * 1985-07-29 1986-04-01 Kinetico, Inc. Molded plastic pressure tank
GB2195973A (en) * 1986-10-13 1988-04-20 Lin Pac Mouldings Container end closure
US5199593A (en) * 1990-08-14 1993-04-06 Fuji Photo Film Co., Ltd. Plastic case having improved ultrasonic welds between halves thereof and method for producing same
US5263606A (en) * 1992-01-17 1993-11-23 Continental Plastics, Inc. Squeeze container with sonically welded flexible tubular body and bottom cover
ES2053384A2 (en) * 1992-04-13 1994-07-16 Estratificados De Vidrio S A P Process for manufacturing containers subjected to the inner pressure of a fluid
US5493787A (en) * 1994-12-21 1996-02-27 The Stanley Works Chalkline tool
US5670108A (en) * 1995-11-03 1997-09-23 General Motors Corporation Method of molding a plastic vessel having a flash trap
EP1072214A2 (en) * 1999-07-01 2001-01-31 Filtertek, Inc. Semisolid product dispensing head
WO2001074677A1 (en) * 2000-04-03 2001-10-11 Silgan Containers Corporation Spin welded lid and container
US6793095B1 (en) * 1998-02-04 2004-09-21 Essef Corporation Blow-molded pressure tank with spin-welded connector
US20090166383A1 (en) * 2006-05-16 2009-07-02 Seaquist Perfect Dispensing Gmbh Dispensing device
US20090294480A1 (en) * 2006-05-16 2009-12-03 Seaquist Perfect Dispensing Gmbh Dispensing device
US20100012680A1 (en) * 2006-03-15 2010-01-21 Seaquist Perfect Dispensing Gmbh Dispensing device
US20100108722A1 (en) * 2006-09-07 2010-05-06 Seaquist Perfect Dispensing Gmbh Dispensing device
US20100140279A1 (en) * 2007-08-17 2010-06-10 Sea To Summit Pty., Ltd. Collapsible Container
US20100206911A1 (en) * 2007-08-29 2010-08-19 Seaquist Perfect Dispensing Gmbh Dispensing device
US8286839B2 (en) 2008-08-12 2012-10-16 Aptar Dortmund Gmbh Dispensing device
US8453875B2 (en) 2008-06-20 2013-06-04 Aptar Dortmund Gmbh Dispensing device
US8573449B2 (en) 2006-06-08 2013-11-05 Aptar Dortmund Gmbh Dispensing device having an elastically deformable section for pumping a fluid
US8616416B2 (en) 2008-08-12 2013-12-31 Aptar Dortmund Gmbh Delivery head
US8616417B2 (en) 2009-06-25 2013-12-31 Aptar Dortmund Gmbh Valve and discharge device
US8863994B2 (en) 2007-03-15 2014-10-21 Aptar Dortmund Gmbh Dispensing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720332A (en) * 1952-04-04 1955-10-11 Danielson Mfg Company Plastic hollow housing construction
US3095112A (en) * 1961-12-11 1963-06-25 Richardson Co Sealing container cover and wall members
US3108710A (en) * 1957-06-11 1963-10-29 Lange Karl Erwin Food can of synthetic material
AT235199B (en) * 1961-09-28 1964-08-10 Hoechst Ag Thermoplastic containers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720332A (en) * 1952-04-04 1955-10-11 Danielson Mfg Company Plastic hollow housing construction
US3108710A (en) * 1957-06-11 1963-10-29 Lange Karl Erwin Food can of synthetic material
AT235199B (en) * 1961-09-28 1964-08-10 Hoechst Ag Thermoplastic containers
US3095112A (en) * 1961-12-11 1963-06-25 Richardson Co Sealing container cover and wall members

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127219A (en) * 1976-12-27 1978-11-28 Mabus Richard C Needle dispenser
US4284168A (en) * 1977-08-25 1981-08-18 Braun Aktiengesellschaft Loudspeaker enclosure
US4579242A (en) * 1985-07-29 1986-04-01 Kinetico, Inc. Molded plastic pressure tank
GB2195973A (en) * 1986-10-13 1988-04-20 Lin Pac Mouldings Container end closure
GB2195973B (en) * 1986-10-13 1990-08-29 Lin Pac Mouldings A plastics container assembly
US5199593A (en) * 1990-08-14 1993-04-06 Fuji Photo Film Co., Ltd. Plastic case having improved ultrasonic welds between halves thereof and method for producing same
US5288350A (en) * 1990-08-14 1994-02-22 Fuji Photo Film Co., Ltd. Plastic case having improved ultrasonic welds between halves thereof and method for producing same
US5263606A (en) * 1992-01-17 1993-11-23 Continental Plastics, Inc. Squeeze container with sonically welded flexible tubular body and bottom cover
ES2053384A2 (en) * 1992-04-13 1994-07-16 Estratificados De Vidrio S A P Process for manufacturing containers subjected to the inner pressure of a fluid
US5493787A (en) * 1994-12-21 1996-02-27 The Stanley Works Chalkline tool
US5670108A (en) * 1995-11-03 1997-09-23 General Motors Corporation Method of molding a plastic vessel having a flash trap
US6793095B1 (en) * 1998-02-04 2004-09-21 Essef Corporation Blow-molded pressure tank with spin-welded connector
EP1072214A3 (en) * 1999-07-01 2001-03-21 Filtertek, Inc. Semisolid product dispensing head
EP1072214A2 (en) * 1999-07-01 2001-01-31 Filtertek, Inc. Semisolid product dispensing head
US6450722B1 (en) 1999-07-01 2002-09-17 Filtertek Inc. Semisolid product dispensing head
US20030095827A1 (en) * 1999-07-01 2003-05-22 Filtertek Inc. Semisolid product dispensing head
US6890119B2 (en) 1999-07-01 2005-05-10 Filtertek Inc. Semisolid product dispensing head
US20050133964A1 (en) * 1999-07-01 2005-06-23 Filterteck Inc. Semisolid product dispensing head
WO2001074677A1 (en) * 2000-04-03 2001-10-11 Silgan Containers Corporation Spin welded lid and container
US8225966B2 (en) 2006-03-15 2012-07-24 Seaquist Perfect Dispensing Gmbh Dispensing device
US8602266B2 (en) 2006-03-15 2013-12-10 Aptar Dortmund Gmbh Dispensing device
US20100012680A1 (en) * 2006-03-15 2010-01-21 Seaquist Perfect Dispensing Gmbh Dispensing device
US9205437B2 (en) 2006-03-15 2015-12-08 Aptar Dortmund Gmbh Dispensing device
US20090166383A1 (en) * 2006-05-16 2009-07-02 Seaquist Perfect Dispensing Gmbh Dispensing device
US8240518B2 (en) 2006-05-16 2012-08-14 Seaquist Perfect Dispensing Gmbh Dispensing device and container for a cosmetic liquid
US20090294480A1 (en) * 2006-05-16 2009-12-03 Seaquist Perfect Dispensing Gmbh Dispensing device
US8573449B2 (en) 2006-06-08 2013-11-05 Aptar Dortmund Gmbh Dispensing device having an elastically deformable section for pumping a fluid
US20100108722A1 (en) * 2006-09-07 2010-05-06 Seaquist Perfect Dispensing Gmbh Dispensing device
US8261952B2 (en) 2006-09-07 2012-09-11 Seaquist Perfect Dispensing Gmbh Dispensing device
US8863994B2 (en) 2007-03-15 2014-10-21 Aptar Dortmund Gmbh Dispensing device
US20100140279A1 (en) * 2007-08-17 2010-06-10 Sea To Summit Pty., Ltd. Collapsible Container
US20100206911A1 (en) * 2007-08-29 2010-08-19 Seaquist Perfect Dispensing Gmbh Dispensing device
US8678245B2 (en) 2008-06-20 2014-03-25 Aptar Dortmund Gmbh Dispensing device
US8453875B2 (en) 2008-06-20 2013-06-04 Aptar Dortmund Gmbh Dispensing device
US8616416B2 (en) 2008-08-12 2013-12-31 Aptar Dortmund Gmbh Delivery head
US8286839B2 (en) 2008-08-12 2012-10-16 Aptar Dortmund Gmbh Dispensing device
US8616417B2 (en) 2009-06-25 2013-12-31 Aptar Dortmund Gmbh Valve and discharge device

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