WO2005108241A1 - Recipient plastique hermetique pour dispenser un produit pressurise - Google Patents

Recipient plastique hermetique pour dispenser un produit pressurise Download PDF

Info

Publication number
WO2005108241A1
WO2005108241A1 PCT/US2005/014792 US2005014792W WO2005108241A1 WO 2005108241 A1 WO2005108241 A1 WO 2005108241A1 US 2005014792 W US2005014792 W US 2005014792W WO 2005108241 A1 WO2005108241 A1 WO 2005108241A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic bottle
polymeric material
pressurized composition
plastic
bottle
Prior art date
Application number
PCT/US2005/014792
Other languages
English (en)
Inventor
Michael J. Skalitzky
Original Assignee
S. C. Johnson & Son, Inc.
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 S. C. Johnson & Son, Inc. filed Critical S. C. Johnson & Son, Inc.
Priority to CA 2564261 priority Critical patent/CA2564261A1/fr
Publication of WO2005108241A1 publication Critical patent/WO2005108241A1/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
    • B65D83/14—Containers 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
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/752—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by the use of specific products or propellants
    • 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 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
    • B65D83/38—Details of the container body
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/387—Materials used as gas barriers
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Definitions

  • the present invention relates to containers for dispensing pressurized products such as aerosols, and more particularly to a seal coated plastic container for dispensing a pressurized product such as an aerosol that effectively inhibits migration of carbon dioxide or similar propellants through the walls of the container.
  • pressurized products or “pressurized compositions” will be understood herein to encompass both aerosols, literally, as well as other liquid or flowable products that can be dispensed from pressurized containers in a manner comparable to aerosolized products and, unless a narrower meaning is clearly imposed by the context, "aerosol” herein shall be understood to include such other forms of “pressurized products.”
  • Such pressurized products include but are not limited to foamed or gel preparations or to liquid products delivered in a non- aerosol stream. Typical examples of such pressurized products are insecticides, insect repellants, hairsprays, air fresheners, cleaning preparations, and shave preparations including foams and gels.
  • Containers for dispensing pressurized products such as aerosols are well known in the art, and are typically constructed of metal in order to withstand the inherent internal pressure created by the propellant.
  • plastics have found increasing use as replacements for metal, especially when packaging pressurized products such as beverages, because plastics have many advantages over metal. Some of these advantages include the ease and economy of manufacture, thus resulting in potentially lower costs, as well as lighter weight, decreased breakage and aesthetic appeal to an end user.
  • plastic containers Despite the desirability of using plastic containers, there are some disadvantages to utilizing plastic materials to contain pressurized products.
  • plastic containers such as polyolefins, for example polyethylene (PE) or polypropylene (PP), as well as polyesters such as polyethylene terephthalate (PET), nylons and polycarbonates, are known to be very gas permeable.
  • gasses such as carbon dioxide utilized as a propellant in pressurized products can migrate through the polymeric materials at an unacceptable rate thus substantially reducing the shelf life of the product.
  • Non-liquefiable gasses Propellant gaseous pressure above a liquefied propellant, such as a butane or similar conventional hydrocarbon propellant, is renewed from the liquid reservoir when product is delivered from a conventional, metal aerosol can.
  • a propellant is a gas that is non-liquid at those temperatures and pressures, only the container's original charge of pressurized gas is available for use, with no reservoir to restore pressure after product is discharged, except perhaps for such small amounts of gas as may be dissolved in any remaining product.
  • non-liquefiable gasses commonly used as propellants, either alone or in combination with other gasses, include carbon dioxide, nitrous oxide, nitrogen, air, and the like.
  • carbon dioxide propellant systems will be discussed herein, but only as an example of such gasses so that, unless the context clearly indicates the contrary, what is said with respect to carbon dioxide as a propellant also is intended to apply to other non- liquefiable propellant gasses.
  • the present invention is directed toward a seal coated plastic bottle or container for dispensing a pressurized product such as an aerosol.
  • the seal coating is applied to the exterior surface of the plastic bottle and effectively inhibits migration of carbon dioxide and other non-liquefiable propellant gasses through the walls from the interior to the exterior of the bottle.
  • the seal coating also effectively inhibits migration of oxygen in the surrounding atmosphere through the walls into the bottle, which could affect the product if the product is oxygen sensitive.
  • the plastic bottle is comprised of a relatively gas permeable polymeric material such as a polyolefin, a polyester, polyvinylchloride (PVC), copolymer PVC, a nylon, or a polycarbonate
  • the seal coating disposed on the exterior surface of the bottle comprises at least one layer of a barrier material which has no or at least a low permeability to non-liquefiable gasses such as carbon dioxide and oxygen, i.e. the seal coating exhibits a high resistance to the passage therethrough of carbon dioxide or other non-liquefiable gas being used as a propellant or of oxygen.
  • Relatively gas permeable materials are defined herein as materials that are permeable to carbon dioxide to at least about the same extent as are polyolefins such as polyethylene (PE) or polypropylene (PP), as polyvinylchloride (PVC) or copolymer PVC, or as polyesters such as polyethylene terephthalate (PET), nylons and polycarbonates.
  • polyolefins such as polyethylene (PE) or polypropylene (PP), as polyvinylchloride (PVC) or copolymer PVC, or as polyesters such as polyethylene terephthalate (PET), nylons and polycarbonates.
  • PET polyethylene terephthalate
  • the preferred polymeric material for the plastic bottle is polyethylene terephthalate
  • the preferred seal coating is an epoxy-amine, although other coatings, such as saran-based coatings, are also possible.
  • seal coating provides only about a thin coating of the barrier material, coating thicknesses ranging from 0.005 to 0.025 mm can greatly extend the shelf life of pressurized products such as an aerosol.
  • a thickness range from 0.006 to 0.009 mm is preferred, while a thickness of about 0.007 mm is most preferred as providing a useful and practical reduction of carbon dioxide or other non-liquefiable gas permeability at a tolerable cost for modestly-priced consumer products.
  • a generally uniform thickness is preferred as providing the most predictable results, albeit useful results can be obtained even with seal coatings of variable thicknesses.
  • the principal advantage of plastic bottles or containers utilizing a seal coating in accordance with the present invention is the overall reduction in the migration of carbon dioxide or other non-liquefiable propellant gas through the container walls which results in a major increase in shelf life of the product.
  • the present invention is directed toward a pressure resistant plastic bottle for containing and dispensing a pressurized product, such as an aerosol composition, wherein the plastic bottle is seal coated with the barrier material.
  • the plastic bottle is comprised of a hollow elongate body having a longitudinal axis and an outer wall.
  • the outer wall is seal coated with a carbon dioxide barrier material over at least 50% of its exterior surface area, and defines a central portion, a top portion and an opposite bottom portion.
  • the central portion has a circular cross-sectional configuration taken through a plane perpendicular to the longitudinal axis and has an inwardly projecting concave configuration extending along its longitudinal direction.
  • the central portion of the bottle has a hyperboloid configuration.
  • the bottom portion of the elongate body is integral with the central portion and defines an outwardly projecting convexly shaped configuration extending along a direction transverse to said longitudinal axis.
  • the convexly shaped configuration comprises a base portion having a spherical end configuration and a side portion having a spherical segment configuration.
  • the seal coating effectively reduces the migration of carbon dioxide and/or oxygen through the walls of the bottle to yield a major increase in the shelf life of the pressurized product.
  • the seal coating protects the bottle and its contents from ultraviolet (UV) light degradation.
  • the design of the central portion and bottom portion of the plastic bottle effectively resists the internal pressures generated by an aerosol to minimize any deformation. Further, any deformation that may occur results in a substantially uniform change which can be accommodated by the top portion of the plastic bottle.
  • the top portion of the bottle is integral with the central portion and has an outwardly projecting convex configuration extending along its longitudinal direction, and defines a neck having an opening for receiving and dispensing the pressurized composition.
  • a closure covers the opening and is sealingly attached to the neck to contain the pressurized composition within the plastic bottle.
  • the closure includes a valve member having an axially extended valve stem which must be either depressed or tilted to release the pressurized composition contained in the plastic bottle.
  • a cap assembly includes an actuator operably associated with the stem to activate the valve member and dispense the pressurized composition.
  • FIG. 1 is an elevational view of a seal coated plastic bottle and cap assembly in accordance with the present invention used for containing and dispensing a pressurized composition
  • Fig. 2 is a cross-sectional view of the seal coated plastic bottle and cap - assembly taken along the line 2-2 in Fig. 1 with a closure and valve shown only partially in section.
  • a pressure resistant plastic bottle generally designated by the numeral 1 for containing and dispensing a pressurized product such as an aerosol composition.
  • the outer surface of the plastic bottle 1 is seal coated with a layer 35 of barrier material which is composed of a polymeric material that substantially reduces the migration of carbon dioxide gas used as the propellant for the pressurized composition through the polymeric material from which the plastic bottle 1 is manufactured.
  • the plastic bottle 1 may be composed of any thermoplastic polymeric material that may be formed into the desired shape disclosed herein.
  • Preferred polymeric materials include polyolefins such as polyethylene (PE) or polypropylene (PP) as well as polyesters such as polyethylene terephthalate (PET), nylons, polycarbonates, polyvinylchloride (PVC), and copolymer PVC.
  • Such materials include ethylene based polymers, including ethylene/vinyl acetate, ethylene acrylate, ethylene methacrylate, ethylene methyl acrylate, ethylene methyl methacrylate, ethylene vinyl acetate carbon monoxide, and ethylene N-butyl acrylate carbon monoxide, polybutene-1, high and low density polyethylene, polyethylene blends and chemically modified polyethylene, copolymers of ethylene and C1-C6 mono- or di-unsaturated monomers, polyamides, polybutadiene rubber, polyesters such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate; thermoplastic polycarbonates, atactic polyalphaolefins, including atactic polypropylene, polyvinylmethylether and others; thermoplastic polyacrylamides, polyacrylonitrile, copolymers of acrylonitrile and other monomers such as butadiene styrene; polymethyl pentene, polyphenylene a
  • the most preferred thermoplastic material is polyethylene terephthalate (PET). PET is commercially available from numerous sources, and one such source is M&G, Inc. under the trade designation Traytuf ® .
  • PET is commercially available from numerous sources, and one such source is M&G, Inc. under the trade designation Traytuf ® .
  • the thermoplastic polymer used to make the plastic bottle 1 is transparent, although opaque and partially opaque polymers would also function adequately.
  • the plastic bottle 1 may be formed by any conventional molding technique, such as two-stage blow molding. In two-stage blow molding, a pre-form of the plastic is made by injection molding. The pre-form provides the mass of material that eventually is blown into final shape, but it also may include in substantially final form such features as the bottle neck 11 and annular flange 19, described below.
  • plastic bottle 1 may be formed integrally in a one-piece construction which is the preferred construction. Blow molding techniques, as well as other techniques for manufacturing plastic bottle 1 are well known in the art and need not be further described herein.
  • the plastic bottle 1 comprises a hollow elongate body having a longitudinal axis 2 and an outer wall 3.
  • Outer wall 3 may vary in thickness from between about 0.25mm to about 1.6mm, but is preferably about 0.64mm.
  • Bottle 1 may be divided into three sections or portions, namely, central portion C, a top portion T and an opposite bottom portion B. As noted above, each of these portions is integral with the other and is formed as a one-piece construction.
  • bottom portion B and central portion C is defined by a plane extending perpendicular to axis 2 and is represented by line 28 while the transition between central portion C and top portion T is also defined by a plane extending perpendicular to axis 2 and is represented by line 29.
  • bottom portion B, central portion C and top portion T define an upper compartment 4 and a lower compartment 5 within the body of plastic bottle 1.
  • Compartments 4 and 5 contain the aerosol composition (not shown) which is typically pressurized at an internal pressure of about 275.8 kPa to about 620.5 kPa with solubilized carbon dioxide (C0 2 ) as the propellant.
  • Examples of typical aerosol compositions are insecticides, insect repellents, hairsprays, air fresheners, cleaning preparations, and shave preparations including foams and gels.
  • the preferred aerosol is a shave preparation pressurized to about 585 kPa with solubilized carbon dioxide (C0 2 ) as the propellant, which provides adequate internal pressure for dispensing the aerosol upon actuation of the valve, as will hereinafter be described.
  • C0 2 solubilized carbon dioxide
  • Each of compartments 4, 5 have a maximum diameter, and the maximum diameter of compartment 4 compared to the maximum diameter of compartment 5, or vice versa, ranges between a ratio of from about 2 to 1 to about 1 to 1.
  • a ratio greater than 1 to 1 is preferred in that a ratio greater than 1 to 1 results in a single contact location between bottles 1 when multiple bottles are clustered on a conveyer belt or are otherwise being processed, moved, or packaged as a group. Other preferred features with respect to such a contact location are discussed, below.
  • the maximum diameter of upper compartment 4 is slightly greater than the maximum diameter of lower compartment 5 although just the opposite would also be effective. As shown best in Fig. 2, the maximum diameter of upper compartment 4 is located in top portion T above line 29, while the maximum diameter of lower compartment 5 is located in bottom portion B below line 28.
  • the preferred diameter for upper compartment 4 is about 5.334cm whereas the preferred diameter of compartment 5 is about 5.309cm.
  • the narrowest diameter, designed by the number 30 and which is located in the middle of central portion C, is approximately 4.57cm.
  • the overall length of the bottle is about
  • the upper compartment 4 has a diameter and a volume that is slightly greater than the diameter and volume of lower compartment 5, just the opposite could also be acceptable. In other words, the diameter and volume of lower compartment 5 could, in fact, be greater than upper compartment 4 if desired.
  • the central portion has a hyperboloid configuration which provides a very ergonomic structure which is easily handled by a user.
  • the bottom portion B of bottle 1 is integral with the central portion C and defines an outwardly projecting convexly shaped or dome shaped configuration extending along a direction transverse to the axis 2.
  • convexly shaped or “convexly shaped configuration” refers to any curved or rounded shape projecting outwardly from the transverse plane defined by line 28. Examples of such shapes include a hemisphere, an ellipsoid, a hyperbola, a parabola, an arcuate shaped configuration, or an arcuate shaped configuration having multiple arcuate sections such as a combination of a spherical segment having one radius and a spherical end having a second different radius.
  • convexly shaped configuration is the preferred configuration for bottom portion B and is illustrated in Figs. 1 and 2.
  • concave configuration refers to any curved or rounded shape projecting inwardly toward longitudinal axis 2. Examples of such shapes include a hemisphere, an ellipsoid, a hyperbola, a parabola, an arcuate shaped configuration, or an arcuate shaped configuration having multiple arcuate sections such as a combination of a spherical segment having one radius and a spherical end having a second different radius.
  • a hyperboloid is the preferred concave configuration for central portion C and is illustrated best in Figs. 1 and 2.
  • the convexly shaped bottom portion B in combination with the inwardly concave configuration of central portion C functions to enable bottle 1 to contain the pressure of an aerosol therein without any substantial deformation.
  • central portion C and bottom portion B have smooth surfaces without any abrupt changes which limits stress concentration points and provides maximum resistance to distortion from internal pressures generated by the aerosol within bottle 1.
  • smooth, curved surfaces that merely join without any abrupt changes in curve are within the scope of the invention, preferably all adjoining curves, especially in the bottom portion B, central portion C, and the area of transition from the central portion C to the top portion T, are tangent to each other, substantially eliminating stress concentration points.
  • Bottom portion B includes a base portion 6 in the shape of a spherical end defined by a convexly shaped surface having radius Rl, and a side portion 7 in the shape of a spherical segment and having an outwardly convexly shaped surface defined by the radius R2.
  • the transition between base portion 6 and side portion 7 is defined by a plane extending perpendicular to axis 2 and is represented by line 31.
  • the radius of curvature Rl has a focal point 8 which is located on longitudinal axis 2.
  • Fig. 1 the radius of curvature
  • the radius of curvature R2 has its focal point 9 located in the plane perpendicular to longitudinal axis 2 defined by line 28.
  • radius Rl is about 3.75cm whereas radius R2 is about 1.9cm, resulting in a ratio of about 2 to 1.
  • the ratio of Rl to R2 may vary from about 1 to 1 to about 5 to 1 with the preferred ratio being 2 to 1.
  • R2 is no less than 0.75 of the radius of any bottle.
  • Fig. 2 also illustrates that the hyperboloid defining central portion C has a radius of curvature defined by R3.
  • the focal point 10 of R3 is located at a point external to bottle 1 in a plane perpendicular to longitudinal axis 2 located midway between and parallel to the planes defined by lines 28 and 29.
  • the preferred radius R3 is about 25.4cm for a bottle of an approximate radius of 2.54cm.
  • a central portion C having any concentric and concave shape provides a pressure-containing advantage when combined with bottom portion B and top portion T, joined in the manner disclosed.
  • the preferred ratio of R3 to the radius of the bottle is approximately 10 to 1.
  • the top portion T of bottle 1 is integral with the central portion C and has an outwardly projecting convex configuration extending along its longitudinal direction, and defines a cylindrical neck 11 having a tubular opening 12 for receiving and dispensing the aerosol composition.
  • a closure 13 covers the opening 12 and is sealingly attached to neck 11 to contain the aerosol within the body of plastic bottle 1.
  • Closure 13 includes a valve member 14 having an axially extending valve stem 15 which must be either depressed or tilted to release the aerosol composition contained within bottle 1.
  • Valve member 14 and valve stem 15 are conventional components typically utilized in aerosol containers, and need not be further described herein as they are well known in the art.
  • neck 11 includes an outwardly extending annular rim 16 adjacent opening 12, and closure 13 includes a depending flange 17 which is inwardly crimped about rim 16 to retain closure 13 on neck 11 of bottle 1.
  • top portion T has a circular cross-sectional configuration taken through a plane perpendicular to longitudinal axis 2 and has an outwardly convex configuration extending along its longitudinal direction from a point where it merges with central portion C, i.e. line 29 to a point where neck 11 is formed. Midway between its length, i.e.
  • top portion T has a flat section 18 having a constant circular cross-section extending along its longitudinal direction to define a cylindrical configuration.
  • Flat section 18 provides line contact (rather than point contact) between adjacent bottles as they are moved side-by-side down a conveyor belt in contact with each other. Bottles with touching curved surfaces, i.e. point contact, tend to slide up or down thus changing the spacing between bottles. In contrast, bottles having straight surfaces such as that provided by flat section 18 where they touch, i.e. line contact, tend not to slide vertically but instead maintain a desired spacing during manufacture and filling.
  • Top portion T of bottle 1 also includes an annular flange 19 which projects radially outwardly from neck 11 with respect to longitudinal axis 2.
  • Flange 19 has a thickness sufficient to provide the strength and stability necessary to be an attachment point for the cap member 21, described below.
  • Preferably flange 19 is about four times the minimum thickness of outer wall 3 and terminates at an outer edge 20, which is located at a point between a vertical plane parallel to axis 2 and defined by the outer surface of neck 11 and a vertical plane parallel to axis 2 and defined by the outer surface of wall 3 of top portion T.
  • cap member 21 has a top circular planar support surface 22 and a depending skirt 23 which is used to cover and surround neck 11 and closure 13.
  • An actuator including a push button 24 hingedly mounted on skirt 23 is operatively associated with valve stem 15 to activate the valve member 14 and dispense aerosol composition in a conventional manner.
  • the mounting means for releasably mounting cap member 21 and the integral actuator to the top portion T comprises a releasable snap fit arrangement.
  • the releasable snap fit arrangement comprises the outer edge 20 of annular flange 19 projecting from neck 11 and an annular groove 25 formed in skirt 23 of cap member 21 for receiving the outer edge 20 of flange 19.
  • the annular groove 25 is formed by an inner lip 26 projecting radially inwardly from the inner surface of skirt 23, and a plurality of circumferentially-spaced bosses 27.
  • the bosses 27 are spaced circumferentially from each other and each boss 27 is also spaced longitudinally from inner lip 26 to form groove 25.
  • each boss 27 includes a tapered or beveled lower surface which permits the cap member 21 to be pushed downwardly until skirt 23 flexes slightly outwardly over outer edge 20 of flange 19.
  • flange 19 as an attachment point for the cap member 21 presents important advantages over attachment of the cap member to other locations on the bottle 1. Flange 19 effectively forms a part of the least flexible portions of the bottle 1. Furthermore, flange 19 is contiguous with the structures that define the neck 11.
  • planar support surface 22 provides a mechanism whereby plastic bottle 1 may stand upright when stored.
  • top support surface 22 is formed in a plane perpendicular to longitudinal axis 2.
  • top support surface 21 is circular in shape and has a diameter which is greater than the diameter of opening 12 in neck 11, but less than the diameter of top portion T. Support surface 22 thus provides sufficient amount of surface area to enable bottle 1 to stand upright during storage without easily tipping over.
  • plastic bottle 1 is preferably composed of a polymeric material such as a polyolefin (e.g. PE or PP), polyvinylchloride (PVC) or copolymer PVC, or a polyester such as PET, or a nylon or a polycarbonate, and such materials have relatively high carbon dioxide and/or oxygen permeability
  • the plastic bottle 1 is seal coated on its outer surface with a layer 35 of barrier material.
  • the layer 35 is itself also preferably composed of a polymeric material that substantially reduces the migration of carbon dioxide gas through the polymeric material from which plastic bottle 1 is manufactured. Solubilized carbon dioxide gas is typically used as the propellant for the pressurized composition contained within bottle 1.
  • seal material or “barrier material” will be understood herein to encompass a material that has no or at least very low permeability to oxygen and/or carbon dioxide gases, i.e. the material exhibits a high resistance to the passage of oxygen and/or carbon dioxide through the material itself.
  • Seal coatings or barrier materials utilized as layer 35 on plastic bottles containing a pressurized product such as an aerosol are intended primarily as carbon dioxide barriers and should exhibit a carbon dioxide permeability of less than about 5, preferably less than about 1, and more preferably less than about 0.5 measured as cubic centimeters of carbon dioxide gas permeating a 0.3 mm thick sample of material which is 650 square centimeters over a 24 hour period under a carbon dioxide partial pressure differential of one atmosphere at 23°C and at a relatively humidity of 0.
  • a wide variety of materials can be utilized as the seal coating or barrier material.
  • Polymeric barrier materials, such as saran-based materials or epoxy amine coatings are preferred as they are typically more economical than other systems.
  • an amorphous carbon treatment applied via plasma deposition may also be used if desired.
  • One such carbon treatment is available from Sidel Corporation under the Actis® trademark.
  • Another coating that may be used for layer 35 is a silica dioxide treatment also believed to be applied by plasma deposition.
  • One such silica dioxide treatment is available from The Coca-Cola Company under the Best PET® trademark.
  • polymeric material such as an epoxy amine coating available under the trademark Bairocade® from PPG Industries, Inc. is a particularly useful and desirable seal coating to be used for layer 35.
  • This epoxy- amine coating composition is a reaction product of a polyepoxide with a polyamine. A more complete disclosure of the epoxy amine composition itself and the method of manufacturing this composition are described in U.S.
  • Patent 5,080,137 U.S. Patent 5,300,541, U.S. Patent 5,489,455, U.S. Patent 5,491,204, and U.S. Patent 5,573,819, the disclosures of which are specifically incorporated herein by reference.
  • seal coatings or barrier materials of layer 35 can be applied as either solvent or aqueous based thermosetting compositions onto the exterior surface of plastic bottle 1 by any conventional means such as spraying, rolling, dipping, brushing or the like. Spray applications or roll applications are preferred, and convention spray techniques and equipment for applying curable coating components can be utilized.
  • the principal advantage of layer 35 is the substantial reduction in the migration of carbon dioxide gas through the walls of bottle 1 to achieve a major increase in shelf life of the product. To achieve this reduction, it is typical that the entire outer surface area of bottle 1 be coated with layer 35.
  • the seal coating or barrier materials are capable of significant reductions in carbon dioxide permeability even when only about 50% or less of the exterior surface area of bottle 1 is coated with layer 35.
  • coating only a portion of the surface area of bottle 1 may be advantageous in those circumstances where it is desired to apply layer 35 only onto areas of a container that are relatively easy to coat, such as central portion C and top portion T as opposed to the bottom portion B of bottle 1.
  • layer 35 may cover the entire surface area or only a portion of the surface area of bottle 1, but it is preferred that at least 50% of the outer surface of bottle 1 be coated with layer 35.
  • Permeation of carbon dioxide through layer 35 is also a function of the thickness of layer 35.
  • either thinner or thicker layers may be applied, if necessary, depending upon the degree of resistance desired.
  • Coatings ranging in thickness from 0.005 to 0.025 mm provide improved reduction in carbon dioxide permeation.
  • multi layer barrier coatings may also be utilized, if desired.
  • a combination of two different barrier materials may be applied depending upon the amount of permeability desired for the product and the shelf life that may be required.
  • plastic bottle 1 may be made which fall within the scope of the following claims even though such variations were not specifically discussed and/or described above.
  • various types of cap members and closures may be utilized in combination with bottle 1, whether the valve stem 15 is actuated by being tilted or by being depressed or in other ways.
  • plastic bottle 1 may be suitable for any aerosol product such as insecticides, insect repellents, hairsprays, air fresheners, cleaning preparations, and shave preparations including foams and gels, and the like.

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)

Abstract

Un récipient plastique hermétique (1) pour dispenser un produit pressurisé tel qu'un aérosol ou un liquide pressurisé, un gel ou une mousse. Le revêtement pressurisé (35) est appliqué á la surface extérieure du récipient plastique et inhibe de manière efficace la migration de gaz propulseurs on liquéfiables et d'oxygène à travers les parois du récipient. La bouteille plastique est composée d'un matériau polymère perméable au gaz tel qu'une polyoléfine, le polyester, ou le nylon ou polycarbonate et le revêtement d'étanchéité est composé d'au moins une couche d'un matériau barrière qui présente une perméabilité basse au gaz non liquéfiable utilisé comme propulseur, c'est-à-dire le revêtement d'étanchéité fait preuve d'une résistance élevée au passage du gaz non liquéfiable. Le matériau polymère préféré pour la bouteille plastique et du polyéthylène téréphtalique et le revêtement d'étanchéité préféré est un époxy-amine. Le revêtement d'étanchéité fournit un revêtement d'un matériau de barrière dont l'épaisseur est compris entre 0.005 et 0.025 mm mais peut étendre considérablement la durée de stockage des produits pressurisés tels qu'un aérosol.
PCT/US2005/014792 2004-04-29 2005-04-28 Recipient plastique hermetique pour dispenser un produit pressurise WO2005108241A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2564261 CA2564261A1 (fr) 2004-04-29 2005-04-28 Recipient plastique hermetique pour dispenser un produit pressurise

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/834,646 US20050242101A1 (en) 2004-04-29 2004-04-29 Seal-coated plastic container for dispensing a pressurized product
US10/834,646 2004-04-29

Publications (1)

Publication Number Publication Date
WO2005108241A1 true WO2005108241A1 (fr) 2005-11-17

Family

ID=34968515

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/014792 WO2005108241A1 (fr) 2004-04-29 2005-04-28 Recipient plastique hermetique pour dispenser un produit pressurise

Country Status (3)

Country Link
US (1) US20050242101A1 (fr)
CA (1) CA2564261A1 (fr)
WO (1) WO2005108241A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721920B2 (en) 2006-05-31 2010-05-25 The Clorox Company Ergonomic cap for plastic aerosol container
EP2508447A1 (fr) * 2011-04-08 2012-10-10 Crown Packaging Technology, Inc. Récipient à distribution automatique

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060060554A1 (en) * 2004-09-20 2006-03-23 Garman Thomas B Blow molded plastic aerosol container
US20070267447A1 (en) * 2006-05-16 2007-11-22 Timothy James Kennedy Flammable propellants in plastic aerosols
US7448517B2 (en) * 2006-05-31 2008-11-11 The Clorox Company Compressed gas propellants in plastic aerosols
US20070292641A1 (en) * 2006-06-16 2007-12-20 Gene Michael Altonen Non-round plastic pressurized dispenser
US20080003387A1 (en) * 2006-06-16 2008-01-03 Gene Michael Altonen Plastic pressurized dispenser
GB0911507D0 (en) * 2008-11-05 2009-08-12 Unilever Plc Hand held aerosol dispenser
US8978937B2 (en) 2010-05-05 2015-03-17 Conopco Inc. Actuator for an aerosol container
CA2800860A1 (fr) 2010-06-03 2011-12-08 Cryovac, Inc. Plaque et appareil permettant de former un article creux a rebord en matiere plastique
WO2012061885A1 (fr) * 2010-11-09 2012-05-18 Southern Star Corporation Récipient sous pression en pet
US10486891B2 (en) * 2016-12-02 2019-11-26 S.C. Johnson & Son, Inc. Plastic bottle for a pressurized dispensing system
EP4065490A1 (fr) * 2019-11-25 2022-10-05 The Procter & Gamble Company Distributeurs d'aérosol recyclables
CN114616192B (zh) 2019-11-25 2024-05-17 宝洁公司 可再循环气溶胶分配器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830404A (en) * 1973-02-26 1974-08-20 Consupak Inc Simulated writing instrument aerosol container
JPS5493214A (en) * 1977-12-29 1979-07-24 Toppan Printing Co Ltd Aerosol container made of plastic
US5206062A (en) * 1989-05-23 1993-04-27 Mitsui Toatsu Chemicals, Inc. Vessel for aerosol
WO1996011162A1 (fr) * 1994-10-11 1996-04-18 Monson James A Dispositif de distribution pour des compositions moussantes et procede associe
WO2003097484A1 (fr) * 2002-05-15 2003-11-27 The Procter & Gamble Company Ensemble pressurise constitue de resine polyamide et contenant de l'oxyde de dimethyle

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL215804A (fr) * 1956-03-28
NL301174A (fr) * 1962-11-29
US3934743A (en) * 1972-12-29 1976-01-27 American Can Company Blow molded, oriented plastic bottle and method for making same
US4743256A (en) * 1985-10-04 1988-05-10 Brantigan John W Surgical prosthetic implant facilitating vertebral interbody fusion and method
GB8620937D0 (en) * 1986-08-29 1986-10-08 Shepperd J A N Spinal implant
US4834757A (en) * 1987-01-22 1989-05-30 Brantigan John W Prosthetic implant
US5300541A (en) * 1988-02-04 1994-04-05 Ppg Industries, Inc. Polyamine-polyepoxide gas barrier coatings
US5008137A (en) * 1988-02-04 1991-04-16 Ppg Industries, Inc. Barrier coatings
US5006381A (en) * 1988-02-04 1991-04-09 Ppg Industries, Inc. Ungelled polyamine-polyepoxide resins
US5192327A (en) * 1991-03-22 1993-03-09 Brantigan John W Surgical prosthetic implant for vertebrae
US5584831A (en) * 1993-07-09 1996-12-17 September 28, Inc. Spinal fixation device and method
US5425772A (en) * 1993-09-20 1995-06-20 Brantigan; John W. Prosthetic implant for intervertebral spinal fusion
BE1007549A3 (nl) * 1993-09-21 1995-08-01 Beckers Louis Francois Charles Implantaat.
CN1156255C (zh) * 1993-10-01 2004-07-07 美商-艾克罗米德公司 脊椎植入物
US5443514A (en) * 1993-10-01 1995-08-22 Acromed Corporation Method for using spinal implants
US5980522A (en) * 1994-07-22 1999-11-09 Koros; Tibor Expandable spinal implants
US5766252A (en) * 1995-01-24 1998-06-16 Osteonics Corp. Interbody spinal prosthetic implant and method
US5658335A (en) * 1995-03-09 1997-08-19 Cohort Medical Products Group, Inc. Spinal fixator
FR2753368B1 (fr) * 1996-09-13 1999-01-08 Chauvin Jean Luc Cage d'osteosynthese expansive
US6190414B1 (en) * 1996-10-31 2001-02-20 Surgical Dynamics Inc. Apparatus for fusion of adjacent bone structures
US6045579A (en) * 1997-05-01 2000-04-04 Spinal Concepts, Inc. Adjustable height fusion device
US6641614B1 (en) * 1997-05-01 2003-11-04 Spinal Concepts, Inc. Multi-variable-height fusion device
US5893889A (en) * 1997-06-20 1999-04-13 Harrington; Michael Artificial disc
US6203913B1 (en) * 1997-12-19 2001-03-20 Ppg Industries Ohio, Inc. Coating composition for plastic substrates
US6090143A (en) * 1998-09-21 2000-07-18 Meriwether; Michael W. Box cage for intervertebral body fusion
US6245108B1 (en) * 1999-02-25 2001-06-12 Spineco Spinal fusion implant
US6419705B1 (en) * 1999-06-23 2002-07-16 Sulzer Spine-Tech Inc. Expandable fusion device and method
AU1630401A (en) * 1999-10-04 2001-05-10 Mane, U.S.A. Foam fabric freshener composition and method
US6368351B1 (en) * 2001-03-27 2002-04-09 Bradley J. Glenn Intervertebral space implant for use in spinal fusion procedures
US6648917B2 (en) * 2001-10-17 2003-11-18 Medicinelodge, Inc. Adjustable bone fusion implant and method
US8025684B2 (en) * 2001-11-09 2011-09-27 Zimmer Spine, Inc. Instruments and methods for inserting a spinal implant
KR100474747B1 (ko) * 2001-12-13 2005-03-08 주식회사 솔고 바이오메디칼 추체간 삽입되는 인공보철물 및 인공보철물 삽입기구
US6893464B2 (en) * 2002-03-05 2005-05-17 The Regents Of The University Of California Method and apparatus for providing an expandable spinal fusion cage
JP4164315B2 (ja) * 2002-08-20 2008-10-15 昭和医科工業株式会社 椎間スペーサー
DE10248171A1 (de) * 2002-10-16 2004-05-13 Advanced Medical Technologies Ag Implantat für die Anordnung zwischen Wirbeln der Wirbelsäule
DE10248170A1 (de) * 2002-10-16 2004-04-29 Advanced Medical Technologies Ag Spreizimplantat zur Anordnung zwischen Wirbeln der Wirbelsäule

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830404A (en) * 1973-02-26 1974-08-20 Consupak Inc Simulated writing instrument aerosol container
JPS5493214A (en) * 1977-12-29 1979-07-24 Toppan Printing Co Ltd Aerosol container made of plastic
US5206062A (en) * 1989-05-23 1993-04-27 Mitsui Toatsu Chemicals, Inc. Vessel for aerosol
WO1996011162A1 (fr) * 1994-10-11 1996-04-18 Monson James A Dispositif de distribution pour des compositions moussantes et procede associe
WO2003097484A1 (fr) * 2002-05-15 2003-11-27 The Procter & Gamble Company Ensemble pressurise constitue de resine polyamide et contenant de l'oxyde de dimethyle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 003, no. 116 (M - 074) 27 September 1979 (1979-09-27) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721920B2 (en) 2006-05-31 2010-05-25 The Clorox Company Ergonomic cap for plastic aerosol container
EP2508447A1 (fr) * 2011-04-08 2012-10-10 Crown Packaging Technology, Inc. Récipient à distribution automatique
WO2012136677A1 (fr) * 2011-04-08 2012-10-11 Crown Packaging Technology, Inc. Récipient auto-distributeur
CN103562094A (zh) * 2011-04-08 2014-02-05 皇冠包装技术公司 自分配容器
US20140308407A1 (en) * 2011-04-08 2014-10-16 Crown Packaging Technology Inc Self-dispensing container
CN103562094B (zh) * 2011-04-08 2016-03-16 皇冠包装技术公司 自分配容器

Also Published As

Publication number Publication date
CA2564261A1 (fr) 2005-11-17
US20050242101A1 (en) 2005-11-03

Similar Documents

Publication Publication Date Title
WO2005108241A1 (fr) Recipient plastique hermetique pour dispenser un produit pressurise
US7028866B2 (en) Pressurized plastic bottle for dispensing an aerosol
CN109071096B (zh) 盖帽组件
US7303087B2 (en) Pressurized plastic bottle with reinforced neck and shoulder for dispensing an aerosol
CA2649724C (fr) Emballage sous pression
US6464111B2 (en) Dispenser containing a product and dispensing method
AU766841B2 (en) Metering valve for dispensers
CN101384492B (zh) 流体输送装置
US7721920B2 (en) Ergonomic cap for plastic aerosol container
EP2178768B1 (fr) Coupelle de base pour conteneur pressurisable
JP5007335B2 (ja) 容器が見えるパッケージ
JP4938841B2 (ja) 優先的に拡張可能な／潰れる容器およびそのためのパッケージ
JP2005178910A (ja) プラスチック製の球状容器を具備するエアロゾルディスペンサー
US20170050767A1 (en) Pressurized package
US20230406605A1 (en) Double nozzle overcap assembly
US20070240387A1 (en) Method of filling a container
JP2001139075A (ja) エアゾール容器

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2564261

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase