Wiper Device for Cosmetic Products Containers, a Process for Manufacturing the Same and a Container for Cosmetic Products Comprising Such a Wiper Device

• US 20080219747A1
• Filed: 05/30/2005
• Published: 09/11/2008
• Est. Priority Date: 07/27/2004
• Status: Active Grant

• Current Assignee: Brivaplast S.R.L.
• Original Assignee: Brivaplast S.R.L.
• Inventors: Vanoncini, Stefano
• Granted Patent: US 8,142,093 B2
• Time in Patent Office: Days
• US Class Current: 401/122
• CPC Class Codes: A45D 34/046 comprising a wiper
• CPC Class Codes: A45D 40/267 comprising a wiper

Abstract

A wiper device for containers of cosmetic products comprises a wiper element (10) to be mounted in a casing (2) of a container (1) for cosmetic products and designed to come into contact with an applicator (6) housed in the casing (2), at least during pulling out of the applicator (6) from the casing (2). The wiper device further comprises means (11) for engagement of the wiper element (10) with the casing (2) and at least one seal (12) to be installed close to an opening (3) of the casing (2) and adapted for abutment against a closing cap (4) of the container (1), to ensure hermetic tightness or the container (1) and avoid escape of the cosmetic product.

Claims

1. A wiper device for containers of cosmetic products, comprising:

a wiper element (10) to be mounted in a casing (2) of a container (1) of cosmetic products, and designed to come into contact with an applicator (6) of cosmetic products housed in the casing (2), at least during pulling out of said applicator (6) from the casing (2);

means (11) for engagement of the wiper element (10) with the casing (2),

characterised in that it further comprises at least one seal (12) connected to the wiper element (10);

said seal (12) being adapted for installation close to an opening (3) of the casing (2) and being susceptible of abutment against a closing cap (4) of the container (1), to ensure hermetic tightness of the container (1) and avoid escape of the cosmetic product.

2. A device as claimed in claim 1, characterised in that the means (11) for engagement of the wiper element (10) with the casing (2) comprises a main tubular body (13) to be engaged in the opening (3) of the casing (2) and having a first edge (14) carrying said at least one seal (12).

3. A device as claimed in claim 2, characterised in that said at least one seal (12) is made of a material having a lower stiffness than that of the main tubular body (13).

4. A device as claimed in claim 2 or 3, characterised in that the wiper element (10) has an annular shape and is installed on a second edge (24) opposite to the first one (14), of the main tubular body (13).

5. A device as claimed in anyone of claims 2 to 4, characterised in that the wiper element (10) is made of a material having a lower stiffness than that of the main tubular body (13).

6. A device as claimed in anyone of the preceding claims, characterised in that the wiper element (10) has a substantially frustoconical shape.

7. A device as claimed in claim 4, 5 or 6, characterised in that the wiper element (10) has a groove (25) for insertion of the second edge (24) of the main tubular body (13).

8. A device as claimed in anyone of claims 2 to 7, characterised in that the main tubular body (13) is made of a polymeric material having a higher stiffness than that of the seal (12) and the wiper element (10).

9. A device as claimed in anyone of the preceding claims, characterised in that the wiper element (10) is made of the same material as the seal (12).

10. A device as claimed in anyone of claims 2 to 9, further comprising an auxiliary body (28) extending against an inner wall (29) of said main tubular body (13) and made of the same material as the seal (12) and the wiper element (10) disposed at a first and a second ends respectively of the auxiliary body (28).

11. A device as claimed in claim 10, wherein the auxiliary body (28) has a tubular conformation and completely covers the inner wall (29) of the main tubular body (13).

12. A device as claimed in anyone of claims 2 to 11, characterised in that the main tubular body (13) can be engaged by interference fit in the opening (3) of the casing (2).

13. A device as claimed in anyone of claims 2 to 12, characterised in that the main tubular body (13) has on a side surface (15) thereof, at least one projection (20) to be engaged in a corresponding seat (21) defined in the opening (3) of the casing (2).

14. A container for cosmetic products, comprising:

a casing (2) designed to hold a cosmetic product and having an opening (3);

a cap (4) removably mounted on the casing (29 to close the opening (3);

an applicator (6) integral with the cap (4) and located within the casing (2), to be dipped into the cosmetic product;

characterised in that it further comprises a wiper device (9) as claimed at least in one of claims 1 to 13.

15. A container as claimed in claim 14, characterised in that the cap (4) has an inner annular projection (22) put in contact relationship with the seal (12) of the wiper device (9) when said cap (4) is disposed on the casing (2) to close it.

16. A process for manufacturing a wiper device for cosmetic product containers, characterised in that it comprises the following steps:

moving to moulding dies (30) close to each other, said dies delimiting a duct (31) having a first opening (32) and a second opening (33) opposite to the first one (32) and internally having a shape matching the outer shape of a main tubular body (13);

inserting a first core (34) into the first opening (32);

inserting a second core (35) into the second opening (33) and make the second core (35) abut against the first core (34);

said first (34) and second (35) cores and duct (31) delimiting a first inner annular volume (37) having the shape of a main tubular body (13) of a wiper device;

introducing a first material in a fluid state into the first inner volume (37), waiting for solidification and formation of the main tubular body (13);

removing the first (34) and second (35) cores;

inserting a third core (40) into the first opening (32);

inserting a fourth core (41) into the second opening (33) and make the fourth core (41) abut against the third core (40);

said third (40) and fourth (41) cores, duct (31) and main tubular body (13) delimiting a second inner volume (43) located close to a first edge (14) of the main tubular body (13) and a third inner volume (44) located close to a second edge (24) of the main tubular body (13);

introducing a second material in a fluid state into the second and third inner volumes (43, 44), waiting for solidification and formation of a seal (12) in the second inner volume (43) and of a wiper element (10) in the third inner volume (44), said seal and wiper element together with said main tubular body (13) forming a wiper device (9);

removing the third (40) and fourth (41) cores; and

pulling the wiper device (9) out of the moulding dies (30).

17. A process as claimed in claim 16, characterised in that the third (40) and fourth (41) cores, duct (31) and main tubular body (13) delimit an auxiliary tubular volume (45) coaxial with said main tubular body (13) and including the second inner volume (43) and third inner volume (44), to define an auxiliary tubular body (28) associated with the main tubular body (13) and comprising the seal (12) and the wiper element (10).