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
  • B65D41/32—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
  • B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
  • B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges
  • B65D41/3414—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges with drive means between closure and tamper element

Definitions

• the invention relates to a container with screw cap and attached raster ring as tamper-evident device according to the features in the preamble of claim 1.
• the container can be a sheet metal container such.
• B. can be a bucket made of tinplate with filling and removal opening in the lid or a steel canister; but the container can preferably be made of plastic and a mineral oil canister produced in the blow molding process, a hobbock, a facet, an adjusting container or a plastic container such as.
• B. a bung or a wide-necked barrel (lid barrel) with a barrel lid and clamping ring closure.
• Such containers have at least one filling and emptying opening in their top or in the attached separate lid, which is closed by means of a screwed-on screw cap.
• the screw cap can e.g. B. for a bung or a barrel lid with bunghole opening as a bung plug.
• Canister screw caps with an integrated molded grid ring are also known, however, these screw caps with grid ring consist of medium or low molecular weight plastic which has poor low-temperature strength properties. These screw caps have not proven themselves in industrial use because they do not meet the approval requirements for the low-temperature drop test.
• a further disadvantage of all known designs is that the loosely screwed-on screw cap can become loose and get lost during the transport from the manufacturer to the filling station due to shaking movements and vibrations. Then z. B. 100% dust protection is no longer guaranteed in a truck transport.
• the originality ring or raster ring remains Unscrewing the screw cap is not fixed on the threaded connector and can therefore fall into the lower container to be filled when the liquid filling material is poured out, ie when the container is tilted.
• comparatively flat projection is designed as a protruding cam which, after the screw cap has been slightly closed by approximately one screw cap revolution behind one or more of the screw caps side locking elements or the elastic spring tongues of the locking collar in such a ge in a releasable rotation lock with mutually retaining active connection ge that an automatic or unintentional turning back of the screw cap z.
• the screw cap according to the invention can be provided with a separately prefabricated, attached grid ring;
• the screw cap or the bung, together with the integrated molded-on grid is made of high molecular weight polyethylene (PE) and thus fulfills all approval-related requirements with good low-temperature strength properties.
• PE high molecular weight polyethylene
• the driver projections can also be implemented in the same manner of operation on the lower edge of the screw cap with a corresponding recess in the upper edge of the grid ring or as a combination of both designs.
• FIG. 1 shows a plastic canister according to the invention with a screw cap and an integrated grid ring
• FIG. 2 the screw cap with a grid ring in a side view
• FIG. 3 shows the screw cap with raster ring in a sectional view
• FIG. 4 shows a bottom view of the screw cap according to FIG. 2,
• FIG. 5 is a partial sectional view of the area of the filling and emptying neck of the canister from FIG. 1,
• FIG. 6 shows a top view of the filler neck according to FIG. 5,
• FIG. 7a shows an enlarged partial sectional view of a top view of an area of the filler neck according to FIG. 6,
• FIG. 8 the filler neck with screw cap to be attached
• FIG. 9 the screw cap screwed on in the pre-locking position
• FIG. 10 the screw cap firmly screwed on in the closed position
• Figure 11 shows the unscrewed cap with sheared grid ring, which is stuck on the base of the filler neck, Figure 12a in an enlarged partial sectional view, the grid ring shortly before
• Figure 12b the halftone ring according to Fig. 12a in canceling the pre-latching position
• reference number 10 denotes a plastic canister onto which a screw cap 12 with an integrally molded grid ring 14 is to be screwed.
• the one-piece screw cap 12 and raster ring 14 are made of high molecular weight polyethylene (PE).
• the raster ring 14 is connected to the screw cap 12 only as a tear-off predetermined breaking points via a plurality of extremely thin connecting webs 16, preferably six. These connecting webs 16 have a small cross section of only about a square millimeter. Also visible is an upstanding driver projection 18 formed on the raster ring 14 with a right-hand vertical stop edge 20 and a left-hand sliding bevel 22. A correspondingly shaped recess 24 is formed in the lower edge of the screw cap 12, into which the driver projection 18 projects in a form-fitting manner. Starting from the upper edge of the raster ring 14, four rectangular continuous recesses 26 are also formed, by means of which the height of the internal spring tongues 34 is reduced. The raster ring 14 is correspondingly designed on its back.
• FIG. 5 shows the filler neck 28 of the canister 10 with the lower base 30 in a side view and in FIG. 6 in a top view.
• FIG. 8 shows the screw cap 12 with a raster ring 14 which is to be screwed onto the filler neck 28 of a canister.
• FIG. 9 the screw cap 12 is already up to the releasable pre-locking position screwed on the threaded connector.
• the screw cap 12 with the raster ring 14 is securely pre-locked by the first spring tongues 34 or locking lamellae of the tamper-evident ring or raster ring in conjunction with the two torsion projections 36 or latching cams which protrude axially by approximately 1 to 2 mm on the top or obliquely upward-facing ring surface of the filler neck base 30.
• the container is closed or the screw cap is screwed on, one or two spring tongues come into active contact with the twisting projections after about half a full turn of the screw cap.
• the elastic spring tongues of the raster ring are then rotated with a slight torque over these latching cams or twisting projections and snap behind them or spring back into their normal position.
• FIG. 12a shows and explains the fixing of the screw cap 12 in the pre-locking position.
• the spring tongue 34 - slides elastically over the left oblique edge 42.
• the left edge 42 of the twisting projection 36 is designed to be flat or oblique so that the spring tongues cannot emerge. To release from the pre-engagement, only the elastic spring force of one or more spring tongues has to be overcome.
• the configuration according to the invention can be used in a corresponding manner for a plug. B. be carried out for a bung.
• Related digit list

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Catching Or Destruction (AREA)
• Tubes (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8003820

Family Applications (1)

Country Status (7)

Families Citing this family (6)

Family Cites Families (5)

• 1995
  • 1995-02-13 DE DE29502309U patent/DE29502309U1/de not_active Expired - Lifetime
• 1996
  • 1996-02-10 AU AU46652/96A patent/AU4665296A/en not_active Abandoned
  • 1996-02-10 DE DE19680076T patent/DE19680076D2/de not_active Expired - Lifetime
  • 1996-02-10 ES ES96902266T patent/ES2122787T3/es not_active Expired - Lifetime
  • 1996-02-10 WO PCT/EP1996/000594 patent/WO1996025342A1/fr active IP Right Grant
  • 1996-02-10 DE DE59600504T patent/DE59600504D1/de not_active Expired - Lifetime
  • 1996-02-10 AT AT96902266T patent/ATE170486T1/de not_active IP Right Cessation
  • 1996-02-10 JP JP52465196A patent/JP3717521B2/ja not_active Expired - Lifetime
  • 1996-02-10 EP EP96902266A patent/EP0758988B1/fr not_active Expired - Lifetime

Non-Patent Citations (1)

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