Process for preparing, prior to filling, a wafer cornet, cornet thus obtained and installation for implementing the process

1. A process for preparing a container comprising a wafer and having a wall extending between an outwardly open mouth zone and a narrower zone forming an outward end, the container being arranged such that the closed, narrow end of the wafer forms the bottom tip of the container, the process comprising, prior to a filling of the container with a food product, the steps of:

spraying the inner wall of the container with a liquid coating agent that is capable of solidifying rapidly in order to form a coating layer intended, after the food product has been placed in the container, to separate the wafer and the food product, the coating layer being provided in order, subsequently, to be consumed at the same time as the wafer and the food product, the inside of the container being sprayed with an excess quantity of coating agent, the excess quantity being sufficient to prevent a coating-gap zone on the inner wall of the wafer that is to come into contact with the food product;

allowing excess liquid coating agent to collect, under gravity, at the bottom tip of the container;

removing, prior to the solidification the excess liquid coating agent;

recycling the excess coating agent to a supply for spraying the inside of the container, the excess coating agent being removed via a pipette positioned close to the bottom tip of the container, an end of the pipette including at least one suction orifice; and

after suction, supplying the orifice with a gaseous flow in order to expel any possible clogging particles that might remain therein, wherein the gaseous flow is blown through the suction orifice so that the flow ejects the particles in a direction that is the same as a passage direction of the flow of recycled coating agent.

2. A process according to claim 1 , wherein the suction orifice is located in a vicinity of a base of a pipette that slides in a guide capable of scraping the outer wall of the pipette causing particles of wafer sticking to the outer wall to fall, under gravity, into the container.

3. A process according to claim 2 , wherein the suction orifice is positioned laterally on the pipette, and the guide comprises a chamber for blowing the gaseous flow in order to expel the particles of wafer wedged in the orifice.

4. A process according to claim 1 , wherein the container is a substantially conical cornet.

5. A process according to claim 1 , wherein the coating agent is chocolate.

6. A process according to claim 1 , wherein the food product is an ice-cream.

7. A process comprising the steps of:

prior to filling of a container consisting of a wafer with a food product, spraying an inner wall of the container with a liquid coating agent, the coating agent being capable of solidifying rapidly in order to form a coating layer to separate the wafer and the food product in the container, the inside of the container being sprayed with an excess quantity of coating agent to prevent a coating-gap zone on the inner wall of the wafer that comes into contact with the food product, the excess liquid coating agent collecting, under gravity, at a bottom tip of the container, and prior to the solidification of the excess, the excess is suctioned out of the container and recycled to the supply for spraying the inside of the container, the coating agent being suctioned out using a pipette positioned close to a bottom tip of the container, an end of the pipette including at least one suction orifice, and after suction, the orifice is supplied with a gaseous flow in order to expel any particles from the orifice, wherein the gaseous flow is blown through the suction orifice so that the flow ejects the particles in a direction that is the same as a passage direction of the flow of recycled coating agent.