KR101923589B1 - Lid for a container for fluid coloring products - Google Patents

Abstract

According to the present invention,
(12) having an inner shoulder (16) on which a substantially annular, impervious and stretchable membrane (22) is supported and a support element (12) for holding the clamped membrane (22) against the inner shoulder To a lid for a container of rapier colored product comprising a clamping element (23) arranged inside the element (12). The support element 12 has an annular groove 29 on its upper part and a corresponding annular protrusion 30 aligned with the annular groove 29 in its lower part.

Description

[0001] LID FOR A CONTAINER FOR FLUID COLORING PRODUCTS [0002]

The present invention relates to lids for containers of rapeseed color products such as, for example, colored liquids, which are the base of paints, varnishes, enamels, inks or other liquid coloring materials. The lid may comprise a stretchable and impervious film that can be perforated by one or more transfer needles passing through the container, and the color pigments may be introduced without the need to first remove the lid from the container. The stretchable membrane automatically closes again as it becomes impervious when each transfer needle is removed.

For example, GB-A-2175282 discloses a lid for a container of rapeseed color product, for example a raw material of paint, the lid being about 2 mm thick and made of an elastomeric material And a flexible and impermeable film of the same shape as the disc made of polypropylene. Each needle can deliver a dosed quantity of colored pigments to the inside of the vessel to obtain the desired colored product. The elasticity of the filmed material allows holes to be temporarily created by the insertion of each needle so that when the needle is removed, the membrane is automatically closed again while restoring the original impermeability.

The known lid includes an annular support made of a plastic material with a circular inner shoulder that is U-shaped to define a circumferential cavity in which the periphery of the membrane is disposed. An annular clamping ring nut is also secured inside the annular support and holds the periphery of the membrane secured in the inner circumferential cavity of the annular support.

The clamping ring nut also has an annular groove on the upper surface of the clamping ring nut that can cooperate with a corresponding annular ridge protruding downwardly from the body of the annular support. The combination of the annular groove and the annular ridge allows the known lid to be stacked on top of other similar lids.

However, the known lid has the disadvantage of having stacking elements made on two separate pieces. In fact, while the lower ridges are made on the annular supports, the corresponding top grooves are made on the ring nuts, requiring a better accuracy of the tolerances of the two pieces that need to make two pieces and fit properly All the molds need to be prepared properly.

Another disadvantage of the known lids relates to the clamping of the membrane on the support element. In fact, the membrane must have a downwardly directed reinforcing ridge perpendicular to the working surface of the membrane, and the reinforcing ridge is inserted into the circumferential cavity of the support element. This, in turn, represents an increase in the production costs of the lid as a whole.

In addition, a second lid similar to the lid described above is known, and the support element has a circumferential tooth or undercut on its side that is capable of permanent and inseparable cooperation with the inner wall of the container. There is also a deep circumferential groove in the bottom of the support element which can reliably function as a laminating element, but a certain amount of product contained in the container can be deposited inside the groove, so that the final result of homogenization of the raw material and colorant .

Another disadvantage of the second known lid is the presence of circumferential teeth which, when combined with the container, create a lid that can not be removed without being damaged.

It is an object of the present invention to achieve a lid for a container of rapeseed color products that is simpler and cheaper to make and allows easy lamination with other identical lids.

Another object of the present invention is to achieve a lid that can be applied to an associated container or even simply removed from the container by an end user.

Applicants have devised, tested and implemented the present invention to overcome the drawbacks of the state of the art and to achieve these and other objects and advantages.

The invention is presented and characterized in the independent claims, the dependent claims describing other features of the invention and modifications to the main inventive concept.

According to the above objects, a lid for a container of rapeseed color product according to the present invention comprises a support element having a substantially ring-shaped, impermeable, inner shoulder on which the periphery of the stretchable film is supported, And a clamping element, for example an annular ring nut, disposed inside the support element for retaining the retained membrane.

According to one aspect of the invention, the support element has an annular groove on its upper portion and a corresponding annular projection on its lower portion aligned with the annular groove. Thus, there are two elements in the same support element that allow several lids to be easily stacked on top of each other.

According to an ancillary feature of the invention, fixing means are provided for holding the membrane in a desired position relative to the support plane of the inner shoulder of the support element. The fastening means comprise teeth and / or protrusions which are made on the support element and / or the clamping element and cooperate with the membrane.

Also, in order to maintain a uniform film on a reliable working plane both during the boring operations with the needles and during the removal of the needles, the support element and the clamping element both preferably comprise one or more annular ribs concentric with one another and a plurality Of radial ribs.

In accordance with another ancillary feature of the present invention, at least the annular ribs and the radial ribs of the support element are pointed downward to prevent the formation of the core of the colored product contained in the container.

According to another ancillary feature of the invention, the support element comprises an outer wall which is substantially cylindrical and perpendicular to the support plane of the inner shoulder, and the outer wall can engage with a corresponding inner wall of the container in which the lid is installed.

Are included herein.

These and other features of the present invention will become apparent from the following description of a preferred form of embodiment provided by way of non-limiting example with reference to the accompanying drawings.
1 is a plan view of a lid for a container of a fluid colored product according to the invention;
2 is a cross-sectional view taken along line II-II in Fig. 1; Fig.
3 is an enlarged view of the detailed configuration III of Fig. 2 defined by a lid; Fig.
4 is a first modification of the lid of Fig.
5 is a second modification of the lid of Fig.
6 schematically shows a plurality of lids according to the invention identical to the lid of Fig. 1 stacked on top of each other; Fig.

To facilitate understanding, the same reference numerals have been used, where possible, to designate identical common components within the figures. The components and features of one form of embodiment may be suitably integrated into other forms of embodiments without additional description.

1, 2 and 3, a lid 10 for a container 11 of a fluid colored product according to the invention is made, for example, of a plastic material and has an internal cavity 13, A substantially cylindrical or somewhat smooth flared outer wall 15 without undercuts and an outer wall 15 substantially in the form of an annulus formed by a substantially cylindrical And an inner shoulder 16 having a resting plane 17 perpendicular to the axis. The outer wall 15 can be coupled to the inner wall 19 of the container 11 which is also cylindrical, for example by interference (FIG. 2). For example, the container may be in a known form such as the one described in the Italian patent application for the industrial invention UD2010A000126 filed by the applicant on June 24, 2010.

In order to facilitate the coupling between the lid 10 and the container 11 the lower part of the wall 15 is slightly truncated towards the bottom at a few degrees (5 DEG to 10 DEG), for example, 12).

The support element 12 further includes an upper peripheral edge 20 that is substantially perpendicular to the outer wall 15 and defines an outer diameter of the lid 10 (FIG. 3). The lower surface of the upper peripheral edge 20 may also be used as an abutment surface for supporting tools such as, for example, a screwdriver, when it is desired to remove the lid 10 from the container 11 It can function advantageously.

The lower surface of the peripheral edge of the membrane 22 is supported on the support plane 17; The membrane 22 is impermeable, stretchable, disk shaped and has a thickness of about 2 mm to 3 mm. The material from which the membrane 22 is made is an elastomer that is known in a known manner and is easily secured, e.g., by one or more needles, e.g., metal, each having a diameter of about 4 mm. The membrane 22 allows the holes made by the needles to be automatically closed again when the needles are removed, for example, in a static situation during storage in the warehouse and, for example, in a pre-fixed lid 10 ) Is in sinusoidal form and has a frequency of 50 rpm to 1000 rpm and has to withstand cycles with differences of 40 mm to 60 mm. The operating conditions during mixing of the rapeseed coloring product contained inside the container (11) elastic properties so as to return to an impervious state in both dynamic situations.

The clamping ring nut 23 is disposed within the inner cavity 13 of the support element 12 and is inserted into a corresponding annular section 26 having a V-shaped cross section of the support element 12, for example, as a snap- to be fixed to the support element by the circumferential teeth 25 inserted in the in-line manner. The clamping ring nut 23 constantly holds the membrane 22 in the desired position and squeezes the peripheral edge of the membrane against the inner shoulder 16.

Attachment means may also be provided to hold the membrane 22 in a desired position relative to the support element 12. [ In the form of the preferred embodiment shown in Fig. 3, the attachment means are distributed along the lower surface of the clamping ring nut 23 and / or along the support plane 17, and the membrane 22 (E.g., 12 dozen) pointed teeth 24 toward the center of the body.

4, the inner shoulder 16 of the support element 12 is directed upwardly and on the top of the peripheral edge of the membrane 22, in place of or in addition to the sharpened serrations 24, And a series of pegs 27 inserted into the holes 28. Preferably, the projections 27 and, consequently, the corresponding holes 28 are angularly equidistant from each other, and the number of them is comprised between 4 and 12.

5, the protrusions 27 are made on the clamping ring nut 23 instead of the support element 12 and are inserted anyway into the corresponding holes 28 of the membrane 22, Head down as far as possible.

The support element 12 has an annular groove 29 at the top and an annular groove 29 at the bottom in order to allow the lid 10 to be stacked easily and safely with other identical lids 10. [ And have corresponding annular protrusions 30 with the same widths (Figs. 2, 3 and 4). The width means the size of the cross section.

The annular protrusion 30 is used to facilitate insertion of the lid 10 into the corresponding annular groove 29 of the other lid 10 when the lids 10 are stacked one on top of the other For example from about 5 [deg.] To 15 [deg.]) (Fig. 6).

The annular groove 29 is very deep in the range of about 9 mm and the thickness of the support element 12 is substantially uniform, thus facilitating the molding of the support element.

The support element 12 also includes two (2) concentric concentric circles with respect to the inner cavity 13, so as to maintain the membrane 22 substantially flat along the entire surface of the membrane during operations to insert and remove needles. Annular ribs 31 and five radial ribs 32 offset at an angle of 72 degrees with respect to each other. Likewise, the clamping ring nut 23 has two annular ribs 33 overlapping the annular ribs 31 and an offset 36 DEG downward relative to the equiangular or radial ribs 32 at an angle to one another And five radial ribs 35 formed in the radial direction.

The annular ribs 33 and the radial ribs 35 are arranged such that the delivery needles wrap on the annular ribs and the radial ribs when the needles are lowered toward the membrane 22 to perforate the membrane To prevent jamming, all become pointed upwards. The angles at the apexes of the annular ribs 33 and radial ribs 35 are about 35 degrees.

Instead, the annular ribs 31 and the radial ribs 32 are both pointed downward so that the rapeseed material contained inside the vessel 11 is not attached to the walls of the ribs, They do not form lumps that can interfere with the proper functioning of the needles. The angles at the apexes of the annular ribs 31 and the radial ribs 32 are comprised between about 25 degrees and about 30 degrees.

The lid 10 may also have a thickness of some tenths of a millimeter, for example of the type described in the Italian patent for industrial invention 1970076, granted to the applicant on Jan. 26, 2010 And may optionally comprise an upper layer 40 comprised of a film or disk made of a very thin plastic or metal such as aluminum. The upper layer 40 is attached to the top of the ring nut 23 and serves as an element for recognizing the perforation with the characteristics clearly and visually indicating whether the lid 10 is perforated or still intact.

The upper layer 40 may also be displayed by the producer or customer, for example, with the insertion of messages relating to the use of the distribution system, or by attaching a trademark or other information of the product.

The lid 10 as described above is therefore simple to make and the support element 12 to which the membrane 22 is supported is provided with an annular groove 29 and a corresponding annular projection 30 Quot;). ≪ / RTI >

It will be apparent that modifications and / or additions of parts to the lid 10 as described above can be made without departing from the scope and spirit of the present invention.

Furthermore, while the present invention has been described with reference to a few specific embodiments, those skilled in the art will readily appreciate that those skilled in the art having the benefit of the features set forth in the claims and thus all falling within the scope of protection defined by the claims It is clear that many other corresponding forms of the lid for the container of the colored product can be achieved.

Claims (10)

(12) having an inner shoulder (16) in the form of an annular, impervious, stretchable film (22) on which the periphery of the membrane (22) A lid for a container of a rapier color product comprising a clamping element (23) disposed inside said support element (12)
Characterized in that the support element (12) comprises an annular groove (29) on its upper part and a corresponding annular projection (30) on its lower part aligned with said annular groove (29) The lid for the container of. The method according to claim 1,
The inner shoulder (16) of the support element (12) includes a support plane (17) on which the lower surface of the periphery of the membrane (22)
Characterized in that fixing means (24, 27, 28) are provided for holding said film (22) at a desired position relative to said support plane (17). 3. The method of claim 2,
The fastening means are distributed along one or more of the lower surface of the clamping element (23) and the support plane (17), and comprise a plurality of pointed serrations (22) directed towards the membrane (22) 24). ≪ / RTI > 3. The method of claim 2,
Characterized in that said fastening means comprises a plurality of projections (27) projecting upwardly from said inner shoulder (16) and inserted into corresponding holes (28) made in the peripheral edge of said membrane (22) A lid for the container of rapeseed colored products. 3. The method of claim 2,
The fastening means comprises a plurality of projections 27 projecting downwardly from the lower surface of the clamping element 23 and inserted into corresponding holes 28 made in the peripheral edge of the membrane 22 ≪ / RTI > wherein the lid is a lid for a container of rapeseed color product. 6. The method according to any one of claims 1 to 5,
Both the support element 12 and the clamping element 23 have one or more annular ribs 31 concentric with one another and a plurality of radial ribs 32,
Characterized in that at least said annular ribs (31) and radial ribs (32) of said support element (12) are pointed downwardly. The method according to claim 6,
Characterized in that the angle at the apex of the ribs (31, 32) is comprised between 25 [deg.] And 30 [deg.]. The method according to claim 1,
The support element 12 is cylindrical and comprises an outer wall 15 perpendicular to the inner shoulder 16 and an outer wall 15 can engage with the corresponding inner wall 19 of the container 11 Wherein the lid is for a container of a rapeseed color product. 9. The method of claim 8,
Characterized in that the lower part of the outer wall (15) is truncated downwardly and connected to the lower surface of the support element (12). 9. The method of claim 8,
Characterized in that the support element (12) further comprises an upper peripheral edge (20) perpendicular to the outer wall (15).

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