KR20140000279A - Lid for a container for fluid coloring products - Google Patents

Abstract

According to the present invention,
Support to hold the membrane 22 clamped against the inner shoulder 16 and the support element 12 having an inner shoulder 16 which is substantially ring-shaped, impermeable and stretchable membrane 22. A lid for a container of rapeseed colored product comprising a clamping element 23 disposed inside the element 12. The support element 12 has an annular groove 29 at the top thereof and a corresponding annular protrusion 30 aligned with the annular groove 29 at the bottom thereof.

Description

LID FOR A CONTAINER FOR FLUID COLORING PRODUCTS}

The present invention relates to a lid for a container of rapeseed coloring products such as, for example, coloring liquids that are a base of paint, varnish, enamel, ink, or other fluid coloring material. The lid may comprise a flexible, impermeable membrane that can be punctured by one or more transfer needles passing into the container, and the colored pigments can be introduced without first removing the lid from the container. The elastic membrane is automatically impermeable again as each transfer needle is removed and closes automatically again.

For example, in GB-A-2175282 a lid is known, for example for a container of rapeseed colored product, the raw material of paint, the lid being about 2 mm thick and an elastomeric material that can be pierced by one or more metal needles. It is provided with a flexible and impermeable membrane of the same shape as a disk made of wood. Each needle may deliver a dosed quantity of colored pigments inside the container to obtain the desired colored product. The elasticity of the material from which the membrane is made allows the holes to be made temporarily by the insertion of each needle to automatically close again, restoring the original impermeability to the membrane when the needle is removed.

Known lids include annular supports made of 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 fixed inside the annular support and holds the periphery of the membrane fixed inside the 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 that projects downward from the body of the annular support. The combination of annular grooves and annular ridges allows known lids to be stacked on top of other similar lids.

However, the known lid has the disadvantage of having lamination elements made on two separate pieces. In fact, the lower ridge is made on the annular support, while the corresponding upper groove is made on the ring nut, requiring better accuracy of the tolerances of the two pieces, which must make two pieces and fit properly. In order to do this, all the molds need to be properly prepared.

Another disadvantage of known lids relates to the clamping of the membrane on the support element. In fact, the membrane must have a reinforcing ridge perpendicular to the operating surface of the membrane and face down, which is inserted into the circumferential cavity of the support element. In addition, this 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 which can cooperate permanently and inseparably with the inner wall of the container. In addition, there is a deep circumferential groove at the bottom of the support element, which can reliably function as a lamination element, but a certain amount of product contained in the container can be deposited inside the groove, resulting in a homogenization of the raw material and colorant. To compromise.

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

It is an object of the present invention to achieve a lid for a container of rapeseed colored product which can be made simpler and cheaper and allows for easy lamination with other identical lids.

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

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

The invention is presented and characterized in the independent claims, and the dependent claims describe other features of the invention and variations on the main inventive idea.

According to the above objects, a lid for a container of rapeseed colored product according to the present invention is substantially loop-shaped, with a supporting element having an inner shoulder on which the periphery of an impermeable and elastic membrane is supported and fixed against the inner shoulder. And a clamping element, for example an annular ring nut, disposed inside the support element to hold the finished membrane.

According to one feature of the invention, the support element has an annular groove at its upper portion and a corresponding annular protrusion at its lower portion aligned with the annular groove. In this way, two elements are present in the same support element which allow several lids to be easily stacked on one another.

According to an auxiliary feature of the invention, fastening means are provided for holding the membrane in a desired position with respect 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 which can cooperate with the membrane.

In addition, in order to maintain a constant membrane on the sure working plane both during drilling operations by the needles and during removal of the needles, the support element and the clamping element are all preferably one or more annular ribs and a plurality of concentric ones. Radial ribs.

According to another auxiliary feature of the present invention, at least the annular ribs and 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 auxiliary 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, which outer wall can engage with the 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 preferred forms of embodiments 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 coloring product according to the invention.
FIG. 2 is a cross-sectional view taken along II-II of FIG. 1.
3 is an enlarged view of detail III of FIG. 2 defined by a lid;
4 is a first variant of the lid of FIG. 1.
5 is a second variant of the lid of FIG. 1.
6 schematically shows a plurality of lids according to the invention which are identical to the lids of FIG. 1 stacked on top of one another.

For ease of understanding, the same reference numerals have been used where possible to represent the same common elements in the figures. Components and features of one form of embodiment may be appropriately incorporated into other forms of embodiment without further explanation.

1, 2 and 3, the lid 10 for a container 11 of a fluid coloring product according to the invention is for example molded, for example made of a plastic material and having an internal cavity 13. An annular shaped support element 12 formed by, substantially cylindrical or slightly smooth flared to outer wall 15 free of undercuts, and substantially to outer wall 15 And an inner shoulder 16 having a resting plane 17 perpendicular to it. The outer wall 15 may couple with the also cylindrical inner wall 19 of the container 11, for example via interference (FIG. 2). For example, the container may be of a known form, such as that described in the Italian patent application for Industry Invention UD2010A000126 filed by the applicant on June 24, 2010.

In order to facilitate the engagement between the lid 10 and the container 11, the lower part of the wall 15 is slightly trumpeted towards the bottom, for example at several degrees (5 ° to 10 °), and the support element ( 12) is connected to the lower surface.

The support element 12 further has an upper peripheral edge 20 that is substantially perpendicular to the outer wall 15 and defines the outer diameter of the lid 10 (FIG. 3). In addition, the lower surface of the edge 20 advantageously serves as an abutment surface for supporting tools such as, for example, screwdrivers, if the lid 10 is desired to be removed from the container 11. Can function.

The lower surface of the peripheral edge of the membrane 22 is supported on the support plane 17; The membrane 22 is impermeable, stretchable, disc shaped, and has a thickness of about 2 mm to 3 mm. The material from which the membrane 22 is made is of known form, for example, an elastomer that is easily fixed by one or more needles, for example metal, each having a diameter of about 4 mm. The membrane 22 allows the holes made by the needles to close automatically when the needles are removed, for example in a static situation during storage in the warehouse, for example in a pre-fixed lid 10. Operating state during mixing of the rapeseed colored product contained inside the vessel 11, which is a sinusoidal form and has a frequency of 50 rpm to 1000 rpm and must withstand cycles with differences of 40 mm to 60 mm. It has elastic properties to return to an impermeable state in both dynamic situations.

The clamping ring nut 23 is arranged in the inner cavity 13 of the support element 13, for example into a corresponding annular section 26 having a V-shaped cross section of the support element 12. secured to the support element by means of a circumferential tooth 25 inserted in an in) manner. The clamping ring nut 23 holds the membrane 22 constantly in the desired position and compresses the peripheral edge of the membrane against the inner shoulder 16.

In addition, attachment means may be provided to maintain the membrane 22 in a desired position with respect to the support element 12. In the form of the preferred embodiment shown in FIG. 3, the attachment means is distributed along the lower surface of the clamping ring nut 23 and / or the support plane 17 and the membrane 22 to penetrate into the membrane 22. A suitable number (eg dozen) of pointed teeth 24 directed.

According to the variant shown in FIG. 4, instead of or in addition to the sharp teeth 24, the inner shoulder 16 of the support element 12 is directed upward and correspondingly made on top of the peripheral edge of the membrane 22. It has a series of pegs 27 inserted into the holes 28. Preferably, the projections 27 and consequently the corresponding holes 28 are angularly equidistant at an angle from each other, and their number is comprised between 4 and 12.

According to another variant shown in FIG. 5, the projections 27 are made on the clamping ring nut 23 instead of the support element 12, and are inserted into the corresponding holes 28 of the membrane 22 anyway. Face down as much as possible.

In order to enable easy and safe lamination of the lid 10 with other identical lids 10, the support element 12 has a width substantially equal to the width of the annular groove 29 at the top and the annular groove 29 at the bottom. And a corresponding annular ridge 30 having the same width (FIGS. 2, 3 and 4). Width means the size of the cross section.

The annular projection 30 is designed 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 ( With slightly flared sides (for example about 5 ° to 15 °) down (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, facilitating the molding of the support element.

In addition, in order to keep the membrane 22 substantially flat along the entire surface of the membrane during the operations of inserting and removing needles, the support element 12 is concentric with the inner cavity 13. Annular ribs 31 and five radial ribs 32 offset at a 72 ° angle with respect to each other. Similarly, the clamping ring nut 23 is offset by two annular ribs 33 overlapping the annular ribs 31 and 36 ° downward with respect to the equidistant or radial ribs 32 at an angle to each other. Five radial ribs 35 are provided.

The annular ribs 33 and the radial ribs 35 allow delivery needles to agglomerate on the annular ribs and the radial ribs when the needles are lowered toward the membrane 22 to pierce the membrane. All are pointed upwards to prevent jamming. The angle at the apex of the annular ribs 33 and the radial ribs 35 is about 35 °.

Instead, both the annular ribs 31 and the radial ribs 32 are pointed downward, so that the rapeseed material contained inside the container 11 does not adhere to the walls of the ribs, so that the rapeseed material is dried. Do not form lumps that can interfere with the proper functioning of the needles. The angle at the apex of the annular ribs 31 and the radial ribs 32 is comprised between about 25 ° and about 30 °.

The lid 10 also has a thickness of some tenths of a millimeter, for example in the form described in the Italian patent for industrial invention 1970076 awarded to the applicant on January 26, 2010. It may optionally include an upper layer 40 consisting of a film or disk made of a very thin plastic or metal such as aluminum. The top layer 40 is attached to the top of the ring nut 23 and functions as an element for recognizing perforations with the characteristics that clearly and visually indicate whether the lid 10 is perforated or still intact.

In addition, the top layer 40 may be indicated by the producer or the customer, for example by the insertion of messages relating to the use of the distribution system, or by affixing the product's trademark or other information.

Therefore, the lid 10 as described above is simple to make, and the support element 12 on which the membrane 22 is supported is an annular groove 29 and a corresponding annular projection 30 which allow to stack the lid. It is evident that the apparatus further comprises means comprising ().

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

Furthermore, although the present invention has been described with reference to several specific embodiments, the rapeseed has the same characteristics as the ones skilled in the art set forth in the claims and therefore all fall within the scope of protection defined by the claims. It is clear that many other corresponding forms of lids for containers of colored products can be achieved.

Claims (10)

Retain a substantially ring-shaped, support element 12 having an inner shoulder 16 on which the perimeter of the impermeable and stretchable membrane 22 rests, and the membrane 22 clamped against the inner shoulder 16; A lid for a container of rapeseed colored product comprising a clamping element 23 disposed inside said support element 12 for
The support element 12 has a rapeseed pigmented product, characterized in that it has an annular groove 29 at the top thereof and a corresponding annular protrusion 30 aligned with the annular groove 29 at the bottom thereof. Lid for container. The method of claim 1,
The inner shoulder 16 of the support element 12 comprises a support plane 17 on which the lower surface of the periphery of the membrane 22 is supported,
Lid for a container of rapeseed colored product, characterized in that fastening means (24, 27, 28) are provided for holding the membrane (22) in a desired position with respect to the support plane (17). 3. The method of claim 2,
The fastening means is provided with a plurality of pointed teeth 24 which are distributed along the lower surface of the clamping element 23 and / or the support plane 17 and towards the membrane 22 for penetration into the membrane 22. A lid for a container of rapeseed colored product. 3. The method of claim 2,
The fastening means is characterized in that it comprises a plurality of protrusions 27 protruding upwards from the inner shoulder 16 and inserted into corresponding holes 28 made in the peripheral edge of the membrane 22. For containers of rapeseed coloring products made. 3. The method of claim 2,
The fastening means comprise a plurality of protrusions 27 which project downwardly from the lower surface of the clamping element 23 and are inserted into corresponding holes 28 made in the peripheral edge of the membrane 22. Lid for a container of rapeseed coloring product, characterized in that. 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 each other, and a plurality of radial ribs 32,
Lid for a container of rapeseed colored product, characterized in that at least the annular ribs (31) and radial ribs (32) of the support element (12) are pointed downwards. The method according to claim 6,
An angle at the apex of the ribs (31, 32) is comprised between about 25 ° and about 30 °. 8. The method according to any one of claims 1 to 7,
The support element 12 comprises an outer wall 15 that is substantially cylindrical and perpendicular to the inner shoulder 16, the outer wall 15 engaging the corresponding inner wall 19 of the container 11. Lid for a container of rapeseed coloring product, characterized in that can be. 9. The method of claim 8,
The lower part of the outer wall (15) is slightly trumpeted downward and is connected to the lower surface of the support element (12). 10. The method according to claim 8 or 9,
The support element (12) further comprises a top peripheral edge (20) substantially perpendicular to the outer wall (15).

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