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
  • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
  • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
  • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
  • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
  • B65D41/045—Discs
• • 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
  • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
  • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
  • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
• • 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
  • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
  • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
  • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
  • B65D41/0485—Threaded or like caps or cap-like covers secured by rotation with means specially adapted for facilitating the operation of opening or closing
• • 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
  • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
  • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
  • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt

Definitions

• This invention relates to screw top closures.
• the invention is concerned with screw top closures intended for use with containers (hereinafter called “bottles”) for drinks especially carbonated drinks and in particular, such bottles containing large quantities (say one and two litres) of the carbonated drink.
• containers hereinafter called “bottles”
• large quantities say one and two litres
• a conventional two litre bottle for carbonated drinks is a plastics moulding formed with a dispensing neck having a threads on its exterior surface.
• the bottle is provided with a removable screw topped closure made of a hard plastics material and comprising (i) a cylindrical body on the inside of which are screw members that in use engage the threads on the neck of the bottle and (ii) an end face which seals against the end of neck of the bottle to seal the bottle.
• the cylindrical body is normally approximately 3,0 to 3,5 centimetres in diameter. In practice it is often difficult to obtain a sufficient purchase on the outside surface of the body to apply adequate torque to it when attempting to reseal the bottle.
• a screw top closure consisting of a main portion formed of hard plastics material and a resilient member attached to the main portion and projecting therefrom so that a person endeavouring to reseal bottle with the closure can engage the resilient member and obtain an adequate purchase to apply the necessary torque to the closure to cause it to form a good seal with the bottle.
• the resilient member preferably comprises a rubber or rubber-like material.
• the resilient member may be moulded integrally with the main portion.
• it is moulded into a slight peripheral recess in the main portion to stand proud of the main portion.
• it may be moulded on the inside of the main portion and have projections, such as dimples, projecting through the body of the main portion.
• the resilient member may, however, be formed separately from the main portion, and conveniently be in the form of a ring, which is be applied to the exterior surface of the main portion by being stretched and when released will firmly grip the main portion because of its resilience.
• the member may be secured to the body, by, for example, a bonding medium.
• the exterior surface of the resilient member may plain. Alternatively it may be provided with projections for improved grippability. These projections may be in the form of dimples, or raised elongated parallelograms or rectangles which preferably are axially extending. Alternatively the projections may comprise fins which are conveniently arranged helically about the outside surface of the member. The ends of these fins are preferably quite soft and are capable of being compressed when gripped by the fingers of an adult.
• Figure 1 is a side view of a screw top closure of the invention applied to the neck of a two litre moulded plastic bottle for carbonated drinks
• Figure 2 is a plan of the closure
• Figure 3 shows the closure arrangement in exploded form
• Figure 4 is a section through the gripping member, the section being taken on line 4 -
• Figure 5 is a view similar to Figure 1 partially in section on line 5 - 5 of Figure 1 , Figures 6, 7, 8 and 9 show other rings for application to the main portion, and
• Figure 10 is a detail plan of the ring of Figure 9.
• FIG. 1 to 5 there is shown a screw top closure 10 applied to the neck 12 of a two litre moulded plastics bottle 14 for carbonated drinks.
• the closure 10 comprises a main portion 16 formed of a hard plastics material, such as nylon.
• the main portion 16 consists of a cylindrical body 18 having a closed disc-like end 20.
• the outside surface 22 of the body 20 is knurled with narrow triangular section longitudinal extending grooves.
• the inside of the body 18 is provided with thread members 24 (shown only in Figure 5), which are arranged in use to engage the threads 26 formed at the neck 12 of the bottle 14.
• the main portion 16 as described above is identical to a conventional screw top closure.
• the closure 10 of the invention further comprises a gripping ring 28.
• the ring 28 is of annular section. It is formed of a resilient plastics material which is softer than the nylon.
• the resilient material is preferably rubber like in feel. Its surface is such that there will be good friction between the fingers of a person engaging the ring 28.
• the ring 28 When applied to the main portion 16, the ring 28 is stretched to fit over the body 18. The ring is then released and .contracts tightly gripping the body 18. The ring 28 is firmly held to the body 18 and cannot rotate relative thereto.
• the resilient material When the closure 10 is gripped to tighten it on to the neck 12 of the bottle 14, the resilient material will be compressed by the fingers of an adult of ordinary strength to provide adequate purchase to enable the fingers to apply sufficient torque to the ring 28 and through the ring 28 to the main portion 16 so that of the latter can be tightly screwed on to the bottle 14 to seal the bottle 14. Furthermore the friction between the resilient material and the fingers, and also the form of the projections, assists for this purpose.
• a modified ring 34 of the invention may have a plain outside surface 36 as shown in Figure 6. This surface may be cylindrical or slightly convex.
• a further modified ring 38 of the invention as shown in Figure 7 has a series of part helical fins 40 running around its surface.
• the fins 40 are of triangular section and are quite narrow. They are spaced apart by a distance which is three or four times their width at their base. When gripped by the fingers, the ends of the fins 40 collapse resiliency to provide excellent purchase for the fingers. The fins 40 spring back to their original condition after release.
• Yet another modified ring 42 as shown in Figure 8 has a series of projections in the form of hemi-spherical dimples 44.
• a further modified ring 46 as shown in Figures 9 and 10 has a series of projections in the form of cones 48.
• the upper ends 50 of the cones 48 are inclined sideways (as best shown in Figure 10) to improve friction.
• the resilient material can be moulded on to the main portion.
• the resilient material of the ring 34 passes through openings (not shown) in the bottle body.
• the material lines the inside of the end 20 and serves as a better seal for the closure on to the end of the bottle.
• a bonding agent may be interposed between the ring and the body of main portion.
• the closure may of an appropriate size to be used with other bottles, tubes or containers which contain non-carbonated drinks or any other matter and in particular matter which deteriorates if the air can enter into it.
• the closure may further be used with bottles, tubes or containers (including jam jars) which contain material that if it moves to around the neck of the container will cause the closure to adhere tightly to it making opening difficult.
• bottles containing non-gas liquids, jar tops, nail varnish bottles and various tubes such as tubes for fine art oil, tape, glue tubes and the like.
• the closure may also be used for tubes containing non-fluid material such as creams etc.
• Part of the surface of the main portion may be slightly recessed and the resilient material is moulded thereon so that a part thereof is contained within the recess.
• the fins may lie in planes that are parallel to the axis of the ring or radial thereto.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36678296

Family Applications (1)

Country Status (12)

Families Citing this family (16)

Family Cites Families (5)

• 2006
  • 2006-01-13 KR KR1020077018573A patent/KR20070103027A/ko not_active Application Discontinuation
  • 2006-01-13 AU AU2006204693A patent/AU2006204693A1/en not_active Abandoned
  • 2006-01-13 US US11/813,864 patent/US20080197101A1/en not_active Abandoned
  • 2006-01-13 CN CNA2006800023632A patent/CN101155733A/zh active Pending
  • 2006-01-13 WO PCT/ZA2006/000003 patent/WO2006076747A2/en active Application Filing
  • 2006-01-13 JP JP2007551496A patent/JP2008526640A/ja active Pending
  • 2006-01-13 BR BRPI0606124-9A patent/BRPI0606124A2/pt not_active Application Discontinuation
  • 2006-01-13 MX MX2007008523A patent/MX2007008523A/es unknown
  • 2006-01-13 EP EP06701710A patent/EP1926668A2/de not_active Withdrawn
  • 2006-01-13 RU RU2007130623/12A patent/RU2007130623A/ru not_active Application Discontinuation
• 2007
  • 2007-08-05 ZA ZA200706725A patent/ZA200706725B/xx unknown
  • 2007-08-13 IL IL185225A patent/IL185225A0/en unknown

Non-Patent Citations (1)

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