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
  • B65D51/00—Closures not otherwise provided for
  • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
  • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
  • B65D51/22—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure
  • B65D51/228—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being removed from the container after the opening
• • 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
  • B65D2251/00—Details relating to container closures
  • B65D2251/0003—Two or more closures
  • B65D2251/0006—Upper closure
  • B65D2251/0015—Upper closure of the 41-type
• • 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
  • B65D2251/00—Details relating to container closures
  • B65D2251/0003—Two or more closures
  • B65D2251/0068—Lower closure
  • B65D2251/0071—Lower closure of the 17-type

Definitions

• the present invention relates to a closure device for flexible material containers such as tubes intended to contain pasty products, for example toothpaste or mayonnaise sauce.
• Such a closure device generally consists of a stopper or an integral capsule, usually by screwing, at the neck of the tube in order to close said tube and to prevent both leakage, drying and oxidation of the product. .
• these tubes are often sold with a seal closing the orifice of the tube independently of the stopper so that one cannot have access to the product before a voluntary commissioning of the tube.
• said cover is also made of aluminum and a member is provided, for example in the shape of a diamond tip, to open the orifice of the tube in order to put said tube into service.
• a member is provided, for example in the shape of a diamond tip, to open the orifice of the tube in order to put said tube into service. The penetration of the point-shaped member makes it possible to pierce the cover while deforming it so that it extends inside the neck without hindering the passage of the product.
• Such a cover is in the form of a closed cylinder connected to said neck by a wall of thin thickness so that it can be torn.
• a tube provided with such a cover is closed by a capsule secured by screwing, the upper external surface of which has an orifice of shape complementary to the external shape of the cover.
• the capsule is unscrewed, then turned over in order to engage the orifice around the seal.
• the outer surfaces of the cover and internal of the orifice have grooves in order to secure the cover and the capsule in rotation. The establishment of these streaks allows that, by rotating the capsule, one drives the operculum in rotation which acts on the wall of fine thickness securing it to the neck, in order to tear it.
• EP-A-0.119.145 and FR-A-2.574.372 which, as in the previous device, relate to a plastic tube closed by a capsule which is screwed onto the neck of the tube .
• the neck is surmounted by a cylindrical cover.
• the capsule comprises internally, arranged coaxially with the tube, a hollow cylinder, called a key, of shape corresponding to that of the cover, intended for tearing off the cover.
• the wall of the cylinder is striated and the striations penetrate into corresponding recesses of the cover or, according to FR-A 2,574,372, into the same wall of the cover.
• the capsule Before the first use of the tube, the capsule is introduced on the end of the tube, and rests on 1 lid.
• the capsule on the tube without uncapping.
• the screw cannot be used without causing a rotational movement which simultaneously tears open the cover.
• the capsule is only held on the tube by the friction of the two cylindrical walls, which is not sufficient, in particular
• FR-A-2,574,372 allows in practice only a single introduction of the capsule into the cover. In fact, when the capsule is removed and put back in place several times, the side wall of the cover 30 is hollowed out each time with as many grooves and the capsule ends up holding badly.
• the present invention aims to provide a closure device which allows both to open and close the tube in service very quickly, to secure the capsule
• the invention relates to a device for closing a container such as a tube made of flexible material, of the type comprising a capsule and a neck, the upper end of which has a cover secured by a thin wall to a cylindrical portion. of said neck and internal means for uncapping said neck, characterized in that said capsule comprises means for securing it by snap-fastening to said neck before tearing of the cap.
• Said closing device is also remarkable in that:
• a circumferential groove separates said peripheral bulge from the cup
• said capsule comprises an external skirt for covering the neck, an intermediate skirt and an internal skirt comprising the means for uncapping the neck, and the diameter of the intermediate skirt is slightly greater than the external diameter of the peripheral bulge and carries the means of snap-fitting of said capsule on the neck,
• the lower end of the internal skirt has a smooth internal wall of diameter equal to the external diameter of the second cylindrical portion of the neck.
• FIG. 1 represents on its left part the neck of the tube on which the capsule seen in section is disposed and on its right part the neck alone seen in section, according to a first embodiment of the invention
• FIG. 4 is a top view of the cover
• FIG. 5 is a view in axial section of a capsule according to a second embodiment of the invention.
• FIG. 6 is a view with the right half in section of the neck of the tube according to the second embodiment
• FIG. 7 is a sectional view along line VII-VII of Figure 5.
• FIG. 1 the closure device according to the invention disposed at the upper end of a tube of flexible material.
• This device consists of a neck 1 and a capsule 2, for example made of plastic and obtained by molding.
• This closure device can of course be made of any other material allowing the uncapping to be effected by tearing a thin wall.
• the body of the tube 3 consisting of a cylinder made of flexible material, such as a sheet of plastic material or a sheet of aluminum-plastic complex, is attached and secured to the lower cup-shaped part 40 of the collar.
• a shoulder 43 of the external surface of this cup 40 makes it possible to stop said body 3 in translation and to form a smooth external surface.
• the neck 1 has, above the cup 40, a generally cylindrical lower portion 11 with a diameter less than that of the body 3 of the tube. This lower portion 11 is intended to form a neck portion of the material contained in the tube.
• the lower end of said lower portion 11 is shaped as a peripheral bulge 42 of generally triangular section.
• a circumferential groove 41 separates said peripheral bulge 42 from the cup 40.
• the neck 1 On the upper side of the lower portion 11, the neck 1 has, after this, an upper cylindrical portion 12 of smaller diameter to which the cover 14 is secured by means of a thin wall 15.
• the internal surface of the neck 1 in the cover 14 is such that said neck 1 is hollow at the level of said thin wall 15.
• the generally cylindrical external surface of the cover 14 is notched.
• the notches 16 are provided in large numbers on this surface and are also distributed.
• the upper surface of the cover 14 has a recess 17.
• This recess 17 makes it possible to reduce the amount of material necessary for molding said cover and can be of any desired shape or even not be performed.
• the neck having been described, we will now describe the capsule 2 according to the invention intended to ensure the commissioning of the tube by uncapping it as well as its closure in use.
• this capsule 2 has three concentric skirts of different diameters and lengths.
• the external skirt 23 covers the neck 1 in a manner known per se substantially to the edge of the body 3. For aesthetic reasons, this external skirt 23 is often cylindrical or conical with its lower end of diameter similar to that of said body 3 .
• the intermediate skirt 21 disposed inside the external skirt 23 is of a diameter slightly greater than the external diameter of the peripheral bulge 42.
• the lower end of this intermediate skirt 21 is cut by axial openings in order to form tabs 22 whose the ends are elastic in the radial direction.
• Said tabs 22 have their lower ends 25 folded towards the inside of the capsule in the direction of the axis.
• the capsule 2 finally has an internal skirt 24, disposed inside the intermediate skirt 21, the upper part of the internal surface of which has the same diameter and the same shape as the external surface of the cover 14, that is - ie has notches 26 complementary to the notches 16 of said cover.
• the lower end of said skirt has a smooth internal wall of diameter equal to the external diameter of the second cylindrical portion 12 of the neck 1.
• a recess 27 of any desired shape can be provided in the upper end face 28 of the capsule 2.
• the capsule 2 is on the neck 1 of the tube, the internal skirt 24 is positioned around the cover 14 with the notches 26 engaged with the notches 16 of said cover 14 while the smooth lower end of said skirt is positioned around the second cylindrical part 12.
• the notches 16, 26 are provided in large number and are of low height.
• the cover and the internal skirt are provided in a frustoconical shape, which means that they can always be inserted one into the other.
• the notches 16, 26 are provided so that the sliding of the parts is effected with a clearance.
• the section of the notches is smaller than that of the recesses; or the corresponding notches and valleys can be frustoconical.
• the intermediate skirt 21 for its part covers the neck 1 up to the lower end of the lower cylindrical part 11 and the lower ends 25 of the lugs 22 extend in the circumferential groove 41.
• the capsule 2 is made integral with the neck 1 by snap-fastening thanks to said tabs 22.
• the opening and closing of the tube is then done by pressing on the outer skirt 23 at two diametrically opposite points thereof which allows to hold said capsule firmly and to bring out the ends 25 of the legs 22 of the circumferential groove 41
• Portions 29 of the outer wall of the outer skirt 23 are decorated differently than the rest of the latter so that the user presses them.
• the rotation of the cover 14 has the effect of tearing the thin wall 15 and of separating said cover from the neck 1.
• the internal skirt 24 is suitably positioned axially with respect to said cover 14 which allows a good tearing of the thin wall 15 by shearing effect without risking tearing zones.
• the opening of the tube is therefore very simple, very fast and completely reliable.
• the means for uncapping the tube being inside the capsule and not outside of the latter, it cannot be soiled and it is certain that the opening is kept clean.
• the cover After tearing, the cover can remain engaged in the internal skirt, due to the tightening exerted on it by the skirt due to its conical shape, and this without interfering with the function of closing the tube in service.
• FIGS 5 and 6 show an alternative embodiment of the closure device according to the invention.
• the upper end face 128 of the capsule 102 is crossed at its center by an opening 132 opening out inside the internal skirt 124.
• the cover 114 is surmounted by a boss 131 of external diameter equal to the diameter of the opening 132.
• a boss 131 of external diameter equal to the diameter of the opening 132.
• This opening and this boss can of course be provided in any useful form and for example according to the acronym of the company marketing the tube.
• FIG. 7 shows the distribution of the portions 129 and the tabs 122 of the capsule.
• the neck is uncapped by a depression of the capsule and a rotation of the latter.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=9413562

Family Applications (1)

Country Status (2)

Cited By (1)

Families Citing this family (1)

Citations (3)

• 1991
  • 1991-06-06 FR FR9106893A patent/FR2677334A1/fr active Granted
• 1992
  • 1992-06-09 WO PCT/FR1992/000517 patent/WO1992021585A1/fr active Application Filing

Patent Citations (3)

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