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1. WO2020230087 - PROTECTION DEVICE, METHOD AND APPARATUS FOR A CONTAINER

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1. A container (200) for food products or beverages, in particular a can, onto which a protection device (100) is applied, said container (200) comprising a body (220), to which a closing member (210) is firmly connected, the upper surface (211) of which may carry an opening member (212) for the leakage of the contents, characterized in that said protection device (100) comprises a film (300) comprising at least one covering surface (310), each respective part or zone of which is adhering to the opposite part or zone of the surface of said container (200) to be covered and protected.

2. The container (200) according to claim 1, wherein said covering surface (310) extends to cover the entire upper surface (211) in particular of the closing member (210) of the container (200).

3. The container (200) according to at least one of the preceding claims, wherein the film (300) comprises a side covering surface (301) that extends beyond the upper surface (211), going to adhere to an outer edge (213) of the closing member (210) and preferably extending and preferably adhering along a portion of the side surface (221) of the body 33 (220) below the closing member (210).

4. The container (200) according to at least one of the preceding claims, wherein the side covering surface (301) of the film (300) inserts in an interspace (222) that is present between the side surface (221) and the outer edge (213) of the closing member (210).

5. The container (200) according to at least one of the preceding claims, wherein the side covering surface (301) of the film (300) comprises an appendix (302) that remains detached from the side surface (221) and suitable to define a holding point to facilitate the removal of the film (300) from the container (200) before the opening thereof.

6. The container (200) according to at least one of the preceding claims, wherein the film (300) is a film, preferably made of a plastic material, with elastoplastic properties that generate a centripetal radial force, which acts at the outer edge (213), the interspace (222), and the portion of the side surface (221).

7. The container (200) according to at least one of the preceding claims, wherein the film (300) has adhesive properties, preferably actuatable by heating, such that the film (300) bonds to the container (200) and is removable/peelable by tearing.

8. The container (200) according to at least one of the preceding claims, wherein the film (300), preferably of a multi-layered type, is of the barrier type, i.e., it has a reduced permeability to gases and water vapour.

9. A process for the protection of a container (200) for food products or beverages, in particular a can, by a protection device (100), comprising a film (300) characterized in that it provides for arranging the film (300) at the surface portion to be protected, and for adhering each respective part or zone of the covering surface (310) to the opposite part or zone of the surface of said container (200) to be covered and protected.

10. The process according to the preceding claim, which provides for applying the protection device (100) according to at least the following steps:

positioning step:

- positioning and holding the film (300) above and in the proximity of the closing member (210);

• application step:

- gradually creating a vacuum on both sides of the film (300), balancing the pressure values so that the same film (300) does not contact the closing member (210) of the container (200);

- upon reaching the desired vacuum below the film (300), restoring the atmospheric pressure or a temporary overpressure above the film (330), while maintaining the vacuum below the film (300), so as to push, press, and adhere the covering surface (310) against the upper surface (211), and preferably push, press, and adhere the side portion (301) about the outer edge (213) of the closing member (210) and preferably on a portion of the side surface (221) of the body (220) below the closing member (210), and further preferably inserting said side portion (301) into the interspace (222) that is present between the side surface (221) and the outer edge (213) of the closing member (210);

- restoring the atmospheric pressure also below the film (300).

11. The process according to at least one of the preceding claims, which provides for making the film (300) suitably shapeable by means of a step of heating by irradiation and/or contact and/or convection, and preferably until activating its thermoadhesive properties and/or its thermoplastic properties.

12. The process according to at least one of the preceding claims, wherein the positioning step provides for inserting at least one portion of the container (200) comprising the closing member (210) and in particular a portion of the body (220) below it, in an apparatus (500) configured to work at a controlled pressure and/or vacuum and to arrange and hold the film (300) within said apparatus (500) above and in the proximity of the closing member (210). 13. The process according to at least one of the preceding claims, which provides, before the application step, for supporting the side covering surface (301) of the film (300) that extends beyond the upper surface (211), by resting means (540) that are configured not to generate an adhesion with the film (300).

14. The process according to at least one of the preceding claims, which provides, after the application step, for a cutting step, in which the excess film (300) is cut after the application, preferably leaving an appendix (302) that remains detached from the container (200) to define a holding point.

15. An apparatus (500) for the protection of a container (200) for food products or beverages, in particular a can, by means of the application of a protection device (100), said apparatus (500) being characterized in that it comprises application means (501) that are configured to apply the film (300) so that each part or zone of the covering surface (310) is adherent to the respective opposite part or zone of the surface of said container (200) to be covered and protected.

16. The apparatus (500) according to the preceding

claim, wherein the application means (501) comprise an upper chamber (510) and a lower chamber (520), configured to receive therein at least the portion of container (200) that has to be protected, and blocking means (530) configured to hold the film (300) located above the closing member (210) in place, said upper (510) and lower (520) chambers further comprising depressurization means to create the vacuum therein above and below the film (300), respectively, and wherein the upper chamber (510) further comprises pressurization means to generate a pressure that is higher or lower than the atmospheric one above the film (300).

17. The apparatus (500) according to at least one of the preceding claims, wherein the upper and lower chambers (510, 520) comprise means for controlling the pressure/vacuum for the balancing between said upper and lower chambers (510, 520).

18. The apparatus (500) according to at least one of the preceding claims, wherein the lower chamber (520) comprises engaging means (521) of the container (200) that are configured to insert into said lower chamber (520) at least the closing member (210) and in particular a portion below it of the body (220) so that the closing member (210) is in the proximity and below the film (300).

19. The apparatus (500) according to at least one of the preceding claims, wherein the upper chamber (510) and/or the lower chamber (520) comprises a first and second heating means (515, 525), respectively, for the heating of the film (300) by irradiation, and/or convection and/or contact.

20. The apparatus (500) according to the preceding claim, wherein the first and/or second heating means (515, 525) are incorporated in the inner surface (511) of the application means (501) for the heating of the film (300).

21. The apparatus (500) according to at least one of the preceding claims, wherein the application means (501) comprise resting means (540) suitable to support the side covering surface (301) of the film (300) that extends beyond the upper surface (211) and having a resting surface (541) that is suitable not to generate an adhesion with the film (300).

22. The apparatus (500) according to at least one of the preceding claims, wherein the resting means (540) are preferably located below the interspace (222) that is present between the side surface (221) and the outer edge (213) of the closing member (210) and extend up to the proximity of the container (200), leaving a spacing (550) between said resting means (540) and the container (200) for the adhesion of the film (300) into the interspace (222).

23. The apparatus (500) according to at least one of the preceding claims, wherein the resting means (540) are movable between a retracted position outside the working area and an extended position for the support of the side covering surface (301) of the film (300).

24. The apparatus (500) according to at least one of the preceding claims, wherein the upper and lower chambers (510, 520) are movable one with respect to the other between a moving-away opening position (A) and an approaching closing position (B) to promote the insertion of the film (300).

25. The apparatus (500) according to at least one of the preceding claims, wherein the blocking means (530)

comprise opposite surfaces (531, 532) of the upper and lower chambers (510, 520) that hold the film (300) when they are in the closing position (B).

26. The apparatus (500) according to at least one of the preceding claims, wherein the engaging means (521) of the container (200) of the lower chamber (520) are configured to allow a translation movement of the container (200) in order to bring it by approaching/moving away to the proper distance from the film (300) when the latter is hold by the blocking means (530).

27. The apparatus (500) according to at least one of the preceding claims, wherein the application means (501) comprise cutting means to cut the excess film (300) after the application to the container (200).