# US 12,005,625 B2 · Method for making a container for a fluid substance dispensing device and dispensing device for the said fluid substance

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- Number: US 12,005,625 B2
- Document ID: US12005625B2
- Status: Granted
- Kind: B2
- Application number: 17/847,451
- Filed: 2022-06-23
- Published: 2023-01-05
- Granted: 2024-06-11
- Earliest claimed: 2021-07-02
- Assignees: Lumson S.p.A.
- Applicants: LUMSON S.p.A.
- Inventors: Matteo Moretti
- Web page: https://patentgrep.com/patent/US12005625B2

## CPC

- B29B 11/14: characterised by structure or composition
- B29C 49/071: {Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties}
- B05B 11/026: {Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container}
- B05B 11/1047: {the pump being preassembled as an independent unit before being mounted on the container}
- B29C 45/16: Making multilayered or multicoloured articles {(B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816)}
- B05B 11/0044: {compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means (venting means for deformable containers B05B11/047)}
- B05B 11/1023: {having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem}
- B05B 11/1069: {the valve being made of a resiliently deformable material or being urged in a closed position by a spring}
- B05B 15/30: Dip tubes
- B29C 49/06: Injection blow-moulding
- B29C 49/22: using multilayered preforms or parisons
- B29C 2045/1601: {the injected materials not being adhered or bonded to each other (B29C45/0017 takes precedence)}
- B29C 2949/0715: the preform having one end closed
- B29C 2949/0778: characterised by the flange
- B29C 2949/3094: preform having at least partially loose components, e.g. at least partially loose layers
- B29L 2009/001: {the layers being loose}
- B29L 2031/7158: {Bottles}
- B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A method for making a fluid substance container starting from a preform, the container coupled by a ring nut to a hermetic pump to form a fluid substance dispensing device, including heating and blow-moulding the preform to obtain the container; the preform formed of an external body and an internal body mutually assembled before being blow-moulded, the external body being cup-shaped with a first free end, the internal body being cup-shaped with a second free end having a flange whereby, when the internal body and external body are assembled, the flange abuts the first free end and protrudes a distance along an external perimeter of the external body near the free end, the external body being configured to form—once blow-moulded—the external recipient of the container while the internal body is configured to form a deformable bag housed inside the container, the ring nut having a undercut which engages the flange so that when the ring nut is removed the now empty deformable bag comes with it, in addition to the pump.

## Claims

### Claim 1

A method of making a container (1) of a fluid substance starting from a preform (2), the container (1) being associated by a ring nut (9) to a hermetic pump (P) to form a dispensing device of a fluid substance (30), comprising the steps of heating the preform and blowing it to obtain the container (1), the preform (2) being formed by an external body (3) and an internal body (4) mutually assembled via a coupling step before being blown, the external body (3) being cup-shaped and equipped with a first free end (5), the internal body (4) being cup-shaped and having a second free end (6) which has a flange (7) configured so that, when the internal body (4) is assembled to the external body (3), the flange (7) abuts against the first free end (5) and perimetrically protrudes (S) with respect to an external perimeter of the external body (3) in proximity of said free end (5), the external body (3) being configured to form, once blown, an outer vessel (3A) of the container (1) while the internal body (4) being configured to form a deformable bag (4A) housed inside the container (1), the ring nut (9) having an undercut (9A) which engages the flange (7) so that, when the ring nut (9) is removed from the container (1), after that it has been assembled on the container (1) to hold the pump (P), brings with it the empty deformable bag (4A) together with the pump (P), wherein the ring nut (9) and the pump (P) are associated with the container (1) already formed, characterized in that the inner body (4) and the outer body (2) are heated together and blown in a single step to form the container (1), and during blowing, the wall of the deformable bag (4A) only partially adheres to the outer vessel (3A) due to the presence of an air gap present in the preform (2), wherein suitable air passages (11A, 11B) allow air to be discharged during the coupling step between the outer body (3) and the inner body (4) to form the preform (2), wherein the same air passages (11A, 11B), during the blowing phase of the tube (2), are closed to ensure the maintenance of an air gap during the bottle forming.

### Claim 2 (depends on 1)

The method according to claim 1, in which the external body (2), near the first free end (5), has a thread (8) for coupling with a counter-thread (9B) of the ring nut (9).

### Claim 3 (depends on 2)

The method according to claim 2, wherein the undercut (9A) is defined at the top of the counter-thread (9B) of the ring nut (9).

### Claim 4 (depends on 1)

The method according to claim 1, in which air passages (11A, 11B) are provided between the internal body (4) and the external body (3) which put the exterior of the internal body (4) in communication with the outside of the container (1).

### Claim 5 (depends on 4)

The method according to claim 4, wherein the air passages (11A) open on an upper surface (12) of the flange (7) or on a lower surface (13) of the flange (7) in abutment against said first free end (5) of the external body (3).

### Claim 6 (depends on 1)

The method according to claim 1, in which channels (12) are provided between the internal body (4) and the external body (3), located in correspondence with an area that will form a neck (13) of the container (1), the channels communicating with said passages (11A, 11B).

### Claim 7 (depends on 1)

The method according to claim 1, wherein between the pump (P) and the deformable bag (4A) there is provided a sealing gasket (14) equipped with a first sealing lip (14A) on the pump body (P) and a second sealing lip (14B) on an internal surface of the deformable bag (4A), or in which the sealing gasket (14) is equipped with its own flange (14C) housed in a seat (15) provided on the flange (7) of the internal body (3).

### Claim 8 (depends on 1)

The method according to claim 1 in which the inner body (3) is formed by two external layers (20) and a further layer (21) sandwiched between the external layers (20).

### Claim 9 (depends on 1)

The method according to claim 1, wherein the outer body (3) or the inner body (4) are made by injection molding.