ES2232854T3 - FOLDING TUBULAR CONTAINERS. - Google Patents

Abstract

A SIDE SHOULDER SHOULD BE DESCRIBED (11) FOR A FOLDABLE TUBE TANK, WHOSE SHOULD HAS A NOZZLE (17) WITH AN OUTLET MOUTH (18) FOR THE EXPULSION OF THE DEPOSIT MATERIAL. THE SHOULD HAS A TREND ACCORDED TO FOLDING DUE TO THE PROVISION OF A SERIES OF SHELVED FOLDINGS (23) IN ITS INTERIOR SURFACE, WHICH CONSTITUTES A WEAK AREAS THAT ALLOW THE FOLDING OF THE SHOULD WHEN IT IS COMPRESSED BY ONE OF ITS DIES.

Description

Collapsible tubular containers.

This invention relates to tubular containers Collapsible and collapsible tubular packaging necks.

Foldable containers that are well known they distribute semi-solid pastes, creams, ointments and medicines, etc. Containers of this type are usually made of tubes of metal or plastic, one of whose ends is closed by a longitudinal joint welded or contracted and at whose other end it is fixed a neck that has a discharge nozzle formed in the same.

The prior art containers of the type mentioned above tend to retain some of the content of the tube, so that it is difficult to completely empty its content. This is especially true in tubular containers that do not they are permanently deformable, in the manner of packaging folding metal.

In the document GB-A-732.761 shows a manufacturing procedure of a collapsible tubular container. He container described in this document has a tube that extends from the nozzle to the bottom of the container and through the that ink is drawn through a suction pump. The neck of the tube is provided with diametrically separated radial grooves that provide weakened areas that allow the neck and the container fold or fold, in a desired way, under pressure atmospheric when emptying the container.

The present invention provides a container tubular that can be easily folded under applied loads manually and that looks like a tubular container on the outside conventional.

Therefore, a neck is provided for a foldable tubular container, including the neck a nozzle that has an exit orifice through which the material is ejected from the container, the neck having at least one weakened area formed by a plurality of adjacent grooves in its inner surface, to allow it to fold in a desired way if pressed transversely to a diameter.

Preferably, the neck includes a skirt, a conical part that extends radially into the skirt and the grooves extend from the exit hole of the nozzle to the skirt.

Preferably, the grooves are arranged in separate groups of a plurality of grooves, preferably, between 3 and 7 grooves. The minimum thickness of the neck wall in the grooves is approximately half the thickness of the wall of the neck of the tube in the non-grooved parts.
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The grooves can be arranged in two diametrically separated groups. Surface grooves for a finger and a user's thumb can be arranged in the external surface of the neck to help press the neck and they can be diametrically separated in a diameter normal to that of the two separate groups of grooves.

The outer surface of the grooves can be with protrusions or scratched to provide a surface anti-slip.

Also, according to the invention, a Collapsible or flexible tubular container that has a neck as previously described.

The invention will now be described only by way of example and in relation to the attached drawings in which:

Figure 1 is an isometric view of a shape of embodiment of the tube neck according to the present invention;

Figure 2 is a partial plan view of the neck of Figure 1;

Figure 3 is a sectional view on the line III-III of Figure 2;

Figure 4 is a partial sectional view in the line IV-IV of Figure 3 which also shows a part of a tube attached to the neck;

Figure 5 is a partial plan view of a second embodiment of the neck according to the invention;

Figure 6 is a side elevation view of the neck of Figure 5, partially sectioned in the line VI-VI of Figure 5 and

Figure 7 is an enlargement of a detail of the Figure 5

In relation to Figures 1 to 4, a plastic neck 11 which in use is welded to the extreme part of a flexible plastic tube 12 (see Figure 4), whose other end (not shown) will normally be closed by a board longitudinal welded after filling the tube with the material that It will be stored in it.

The neck 11 includes a bottom skirt portion 13 which is a sliding fit within the tube 12 and to which the tube 12 is welded by means of an appropriate procedure. The skirt 13 is connected to a radially inner cylindrical part 15 by means of a radially inwardly extending neck part 14. The cylindrical part 15 is connected to a concavely curved conical part 16 that extends both axially out of the skirt 13 and radially inward to form a nozzle 17 having an outlet hole 18 in the
same.

On the inner surface 20 of the neck 11 are located groups 21 of circumferentially separated grooves. In the embodiment shown there are two groups 21 of grooves located diametrically opposite each other, but it I could use another number of groups. The 21 groups of grooves They basically comprise four projections 22, each having a groove (or groove) 23 on each side thereof. Furrows 23 may be "V" shaped transverse grooves, as sample, or they could be "U" shaped transverse grooves to improve stress crack resistance. The grooves 23 they have a depth that is approximately half the thickness general of the surrounding neck 11. The upper surface of the projections 22 is substantially level with the internal surface 20 of the neck 11.

In each group 21 of grooves preferably there are between 3 and 7 projections 22. More preferably, each group has four projections 22 and five grooves, which extend from the outlet hole 18 in an axial direction on the surface internal neck and end in the skirt 13. Groups 21 of grooves form weakened areas in the neck wall 11, of such that if it is pressed transversely to a normal diameter to that of the transverse diameter of the groups 21, the neck 11 is will fold.

To facilitate neck pressure 11, a pair of grooves 25 are formed in the conical part 16 of the neck to provide locations for a finger and thumb of A person who uses the container. The external surfaces of the slits 25 have protrusions 26 formed therein to Provide a non-slip surface. Other ones could be used non-slip surfaces as an alternative to protrusions, for For example, a right angled crossing surface or a rough matte surface.

The cylindrical part 15 has a slight taper reverse to produce a retainer on which a lid can be attached tight fit (not shown) using a type a construction Pressure.

A neck 111 is shown in Figures 5 to 7 substantially similar, being the only difference with the neck described above, that the cover (not shown) is fixed to the neck 111 by a thread connection 112. The thread connection 112 It is in the form of a three-star thread, having the end bottom of each threaded part an axial extension 113 which is extends down from it. The axial extension 113 has inclined vertical faces 114 that are separated, approximately 90º and form surfaces to engage with a Cooperation provision (not shown) in the thread of the lid, to form an anti-recoil device. This prevents the lid from partially loosening after threading. in the neck.

In another embodiment (not shown) the entire inner surface 20 of the neck could be covered with a plurality of adjacent axial grooves. The grooves, from this example, they could be wider in their extreme parts radially internal than in its adjacent external extreme parts to the skirt 13.

The use of an axial groove provides a controlled folding when neck 11 (or 111) is pressed transversely to a diameter, but still maintains resistance in the axial direction

A container that has a neck of the type that shown in Figures 1 to 4 or 5 to 7 will retain approximately 5% of its content, compared to a container that has a neck conventional non-folding that will normally retain, approximately 10% of its content.

Claims (13)

1. A neck (11) for a collapsible tubular container, including the neck a nozzle (17) having an outlet (18) through which the material is ejected from the container, characterized in that the neck (11) has less a weakened area (21) formed by a plurality of adjacent grooves (23) on its inner surface (20), to allow it to fold in a desired manner if pressed transversely to a diameter. 2. A neck according to claim 1, wherein the neck (11) comprises a skirt (13) and a part usually conical (16) extending radially inwards and axially outside the skirt (13), the grooves (23) extending from the outlet hole of the nozzle (18) to the skirt (13). 3. A neck according to claim 1 or the claim 2, wherein the grooves (23) are arranged in separate groups (21), each comprising a plurality of grooves (23). 4. A neck according to claim 3, wherein each group (21) of grooves (23) comprises between 3 and 7 grooves (23) and preferably 5 grooves (23). 5. A neck according to any one of the claims 1 to 4, wherein the minimum wall thickness of the neck (11) in the grooves (23) is approximately half of the thickness of the neck wall in the parts without groove. 6. A neck according to any one of the claims 1 to 5, wherein the width of the grooves in the ribbed area (s) decreases from the neck skirt (13) towards the nozzle exit hole (18). 7. A neck according to any one of the claims 1 to 6, wherein the neck (11) has two groups (21) of grooves (23) diametrically separated on its surface radially internal (20). 8. A neck according to claim 1 or the claim 2, wherein the entire internal surface (20) of the neck is ribbed. 9. A neck according to claim 8, wherein the projections (22) formed between the grooves (23) are more wide at its ends adjacent to the exit hole of the nozzle (18) that at its ends adjacent to the skirt (13). 10. A neck according to any one of the claims 1 to 9, wherein the outer surface of the neck (11) is formed with a pair of surface grooves diametrically opposite (25) for a finger and the thumb of the Username. 11. A neck according to claim 10, when it depends on claim 7, wherein the slits outer surfaces (25) are arranged in a normal diameter to the transverse diameter of the two groups (21) of grooves (2. 3). 12. A neck according to claim 11, in the that the outer surface grooves (25) each have a non-slip surface (26) therein. 13. A collapsible tubular container characterized in that it includes at one end thereof a neck (11) according to any one of claims 1 to 12.