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
  • B65D45/00—Clamping or other pressure-applying devices for securing or retaining closure members
  • B65D45/32—Clamping or other pressure-applying devices for securing or retaining closure members for applying radial or radial and axial pressure, e.g. contractible bands encircling closure member
• • 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
  • B65D43/00—Lids or covers for rigid or semi-rigid containers
  • B65D43/02—Removable lids or covers
  • B65D43/0202—Removable lids or covers without integral tamper element
  • B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
  • B65D43/0218—Removable lids or covers without integral tamper element secured only by friction or gravity on both the inside and the outside of the mouth of the container
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00064—Shape of the outer periphery
  • B65D2543/00074—Shape of the outer periphery curved
  • B65D2543/00092—Shape of the outer periphery curved circular
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00259—Materials used
  • B65D2543/00296—Plastic
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00342—Central part of the lid
  • B65D2543/00398—Reinforcing ribs in the central part of the closure
  • B65D2543/00416—Reinforcing ribs in the central part of the closure circular
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
  • B65D2543/005—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container both cup and skirt
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00953—Sealing means
  • B65D2543/00962—Sealing means inserted
  • B65D2543/00972—Collars or rings

Definitions

• the invention relates to a lid barrel made of thermoplastic material for holding dangerous liquid or solid contents according to the features in the preamble of patent claim 1.
• lid drums are generally known, for example from the German utility model DE-GM 86 32 037.
• barrels are used to determine the drop height or discharge height at which they still remain tight subjected to certain drop tests and, due to their more or less good sealing capacity, are only approved by the approval authority for certain dangerous or less dangerous fillers.
• the present invention is based on the knowledge that when it hits the floor at the moment of the highest surge pressure in the interior of the barrel, a radially inward force acts on the clamping ring and the flange rings overlapped by it on the lid edge and the barrel wall.
• the clamping ring is caused to assume an approximately egg-shaped or elliptical shape in relation to the barrel body when viewed in cross-section. In the lateral areas to the right and left of the point of contact, the radius of the clamping ring is considerably reduced, and in these areas the slightly conical legs of the clamping ring expand further.
• the diameter of the clamping ring is increased accordingly, so that the clamping ring and the barrel cover can be removed without hindrance by the locking elements.
• the jacket flange which continues to be continuous on its outer circumference or has a circumferentially closed contour, the high inherent rigidity of the barrel body at the top of the barrel or at the barrel opening is fully retained.
• the flange on the barrel lid also retains its stable, continuous contour, which contributes considerably to the radial rigidity of the closed lid barrel.
• de projections are designed with locking cams serving as a locking element, which can be positively gripped or gripped under by the upper leg of the clamping ring.
• a circumferential locking ring is formed as a locking element below the jacket flange on the outer wall of the barrel body, which can be gripped behind by the lower leg of the clamping ring.
• the lower leg is also continuously hindered and fixed all the way around the circumference of the barrel against an expansion effort.
• the lid barrel body with the locking cams on its outer wall is produced in one operation by extrusion blow molding within the blow mold.
• Partial thickness control of the ring nozzle allows the thermoplastic tubular preform to be extruded with different partial wall thicknesses, so that in the finished blown barrel body there are no disadvantageous pockets, niches or depressions on the barrel body inner wall, in which the barrel is emptied later adhering barrel content could remain.
• the jacket flange and the locking cams and possibly the lower circumferential locking ring prefabricated on a band-shaped carrier part as a separate injection-molded part and for the band-shaped carrier part to be provided by positive locking and / or by joining on the barrel body ⁇ is increased.
• the injection molded part can be inserted into the still open blow mold halves before the tubular preform is extruded and welded to the outer wall of the barrel body during the blowing process, or the injection molded part can be subsequently placed on a finished barrel body or, for example, shrunk on.
• cover barrel it is provided that several tongue-shaped projections with detent cams arranged at the lower end and projecting outwards are provided at the bottom of the cover flange in an extension of the ring part at regular intervals and the number of openings formed in the casing flange are which protrude through the openings in the jacket flange in the mounted state and can be gripped behind by the lower leg of the clamping ring.
• the lower clamping ring leg locks the edge of the drum cover against the outer flange of the drum body.
• An upper locking ring is expediently additionally formed on the ring part of the drum cover, which can be gripped behind by the upper leg of the clamping ring, so that the upper clamping ring leg is also fixed circumferentially.
• the drum cover bulges outwards or outwards. This results in a reduction in the diameter of the drum cover with high prevailing tensile forces on the segment pieces of the cover flange located under the clamping ring.
• the cover flange segment pieces bend down due to insufficient bending stiffness / torsional stiffness and there is a great risk that the flange segments will pull out of the clamping ring or the drum cover will be pulled off the drum body at least at one peripheral point and the drum contents may leak.
• the locking cams protruding through the openings in the ring part of the barrel cover on the projections of the barrel wall and the tongue-shaped projections protruding through the openings in the jacket flange with the molded locking cams are arranged alternately on the circumference of the barrel body are and in cooperation with the overlapping or engaging clamping ring form a circumferential interlocking interlocking locking system.
• the jacket flange with the openings and the upper locking cams and, if appropriate, the lower, mutually loaded spaced locking cams are prefabricated on a band-shaped carrier part as a separate injection-molded part and the band-shaped carrier part is fastened to the barrel body by positive locking and / or by joining.
• the rather smaller components of the locking systems on the band-shaped carrier part and the barrel cover can be manufactured by injection molding, while only a simple blow mold is required for manufacturing barrel bodies.
• FIG. 1 shows a detail of the upper area of a cover barrel according to the invention in a longitudinal section
• FIG. 2 shows the cover barrel according to FIG. 1 by one
• FIG. 3 a further cover drum according to the invention
• FIG. 4 the cover drum according to FIG. 3 by one
• FIG. 5 a further cover drum according to the invention and FIG. 6 the cover drum according to FIG. 5 by one
• the reference numeral 10 denotes a lid barrel body which, at a distance (approx. 20 mm to 60 mm) below the upper edge of the barrel body 12 on its outer wall, has a solid jacket flange 16 that is compressed from the material of the barrel wall as the bottom Has counter bearings for an overlapping or engaging clamping ring 18.
• the jacket flange 16 is continuously and continuously stable.
• a drum cover 20 is placed on the drum body 10 and has in its circumferential area a ring part 22 which extends vertically or in the longitudinal direction of the drum and covers the upper edge of the drum body 12, on the lower edge of which a radially outwardly projecting and also continuous continuous one stable cover flange 24 is designed as an upper counter bearing for the clamping ring 18.
• the clamping ring 18 has an upper leg 30 and a lower leg 32, which are designed to run slightly obliquely inwards, so that an almost U-shaped or trapezoidal cross-sectional shape results.
• the casing flange 16 and the cover flange 24 are pulled or clamped against one another by the overlapping clamping ring 18, as a result of which the upper barrel edge 12 is pressed against the seal inserted into the barrel cover 20 and thus the cover barrel is gas and liquid-tight is closed.
• openings 26 In the outer ring part 22 of the barrel cover 20 there are several openings 26 (recesses / windows) distributed uniformly over the circumference in the lower region, the cover flange 24 continuing to run continuously.
• the longitudinal sectional view in FIG. 1 has just passed through such an opening 26.
• Corresponding projections 34 are provided on the outer wall of the barrel body 10 above the jacket flange 16, corresponding to the openings 26 formed with locking cams 36 serving as a locking element projecting radially outwards.
• the projections 34 of the barrel wall in the openings 26 with the ring part 22 of the barrel cover and the latching cams 36 protrude outwards through the openings 26 and are positively engaging behind the upper leg 30 of the clamping ring 18 or stand from the outside against the leg 30.
• the barrel cover 20 and the barrel body 10 are positively locked against one another by the radially engaging clamping ring 18, and the barrel can withstand considerably higher internal pressure values or tension peaks of the brief surge pressure in the event of a crashing barrel falling on the floor, without this leaking.
• the length in the circumferential direction of an opening 26 in the barrel lid 20 or a barrel jacket projection 34 with latching cam 36 (these are approximately 3 mm shorter than an opening) is between 30 mm and .1 for a large-volume 220 1-barrel barrel 120 mm, preferably about 60 mm.
• the cover barrel from FIG. 1 is shown offset in the circumferential direction by the length of an opening, that is to say a longitudinal section through the closed intermediate area of the ring part 22 of the barrel cover 20.
• the barrel wall is set back somewhat or is formed without a projection.
• a circumferential locking ring 40 is formed on the outer wall of the barrel body 10 below the jacket flange 16 as a fixed contact edge (stop) , which can be gripped behind by the lower clamping ring leg 32 or stands firmly against it.
• the outer ring part 22 of the drum cover also has latching in the area between the openings 26.
• cam segment duck 38 which, when closed, are at the same height as the locking cams 36 and prevent the clamping ring from escaping or spreading.
• the plastic barrel shown in Fig. 1 and Fig. 2 is produced in one step in the blow molding process.
• the locking cams 36 can, like the solid casing flange 16, be swaged and shaped directly from the material of the barrel wall by means of a correspondingly designed shaped slide.
• the drum cover 20 is preferably made of hard plastic and is produced by injection molding. It is no problem to shape the openings 26 in the ring part 22.
• FIG. 3 and FIG. 4 show a corresponding but differently produced cover barrel as shown in FIGS. 1 and 2.
• the barrel body 10 has a slightly curved retracted inlet in the area below the barrel top 12. In this area, an annular injection molded part is attached to the barrel body 10.
• the injection molded part has a band-shaped support part 42 on the inside for contact with the barrel body, on which the upper latching cams 36 (here only in segments corresponding to the openings 26 in the barrel cover ring part 22) point outwards, in the middle the continuous circumferential jacket flange 16 and below, the continuous circumferential locking ring 40 are formed.
• the injection molded part is prefabricated separately and, in order to save material, has a large number of cutouts 44 between the locking cams 36 and the jacket flange 16 and cutouts 46 in the jacket flange 16 itself.
• a plurality of ribs running in the axial direction (longitudinal direction) or spaced apart from one another in the circumferential direction are provided in the cutouts 44, 46, so that the material in between is saved without loss of strength.
• the solid cover flange 24 of the barrel cover 20 can also be provided with corresponding ribbed, annular circumferential recesses 48 to save material.
• a further variant of locking the barrel lid 20 with respect to the barrel body 10 or its jacket flange 16 is realized by the clamping ring 18 engaging radially in inserted locking elements 52.
• the outer surface of the jacket flange 16 is also solidly continuous, but several slot-like openings 28 (windows) are incorporated directly on the barrel wall, evenly distributed over the circumference.
• These breakthroughs 28 can e.g. can be formed or molded directly in the blow mold by means of corresponding pulling approaches on the mold slide.
• corresponding tongue-like projections 50 are provided on the lower edge of the cover flange 24 in extension of the ring part 22, which are in the attached state of the drum cover are inserted through the openings 28 and protrude a bit below.
• locking cams 52 are formed as locking elements, which can be gripped behind by the lower leg 32 of the clamping ring, or from the outside as a stop against it and prevent it from spreading open. As only indicated by dashed lines in FIG.
• the latching nocks 36 projecting through the openings 26 in the ring part 22 of the barrel cover 20 and the tongue-shaped projections 50 with the integrally formed latching cams projecting through the openings 28 in the jacket flange 16 52 are arranged several times alternately on the circumference of the barrel body 10 and, in cooperation with the engaging clamping ring 18, form a circumferential interlocking interlocking locking system.
• This barrel version can also be realized with an injection-molded ring part placed on the barrel body with the various locking elements.
• a lid barrel according to the construction according to the invention can safely withstand significantly higher drop heights or drop heights without becoming leaky. It is therefore particularly suitable for the transport of dangerous liquid or solid contents.

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

Applications Claiming Priority (5)

Publications (1)

Family

ID=25908031

Family Applications (1)

Country Status (5)

Families Citing this family (9)

Family Cites Families (14)

• 1991
  • 1991-10-08 DE DE19914133270 patent/DE4133270A1/de active Granted
• 1992
  • 1992-07-10 JP JP5503201A patent/JPH06509309A/ja not_active Expired - Lifetime
  • 1992-07-10 AU AU23121/92A patent/AU2312192A/en not_active Abandoned
  • 1992-07-10 EP EP92915329A patent/EP0595872A1/de not_active Withdrawn
  • 1992-07-10 WO PCT/EP1992/001568 patent/WO1993002938A1/de not_active Application Discontinuation

Non-Patent Citations (1)

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