초록 ▼

A method and kit for draining a flexible container holding a product having a viscosity of between 10 Pa·s and 200 000 Pa·s. The method includes using a flexible container (3); optionally, moving the container (3) to be drained to a drainage site; ensuring the viscous product (2) can flow from conta

A method and kit for draining a flexible container holding a product having a viscosity of between 10 Pa·s and 200 000 Pa·s. The method includes using a flexible container (3); optionally, moving the container (3) to be drained to a drainage site; ensuring the viscous product (2) can flow from container (3) through at least one outlet (9); exerting a pressure on at least one defined area of container (3) using a pressurizing device which preferably includes at least one pressure member (5) and/or a pressure fluid to maintain container (3) in an inflated or partially-inflated state; and removing the pressure once the container has been drained. The drainage kit includes the viscous product (silicon mastic), a flexible container (3) and a draining device including at least one pressure member and/or pressure fluid.

대표청구항 ▼

1. A method of draining a flexible container holding a viscous product, comprising: selecting the viscous product, having a viscosity of at least 50 Pa·s, from the group consisting of polyorganosiloxane compositions which can be crosslinked to form elastomers by polyaddition, polycondensation or deh

1. A method of draining a flexible container holding a viscous product, comprising: selecting the viscous product, having a viscosity of at least 50 Pa·s, from the group consisting of polyorganosiloxane compositions which can be crosslinked to form elastomers by polyaddition, polycondensation or dehydro(poly)condensation reactions, organic polymers comprising reactive organosilicic groups (referred to as MS polymers) and compositions which are charged in a solvent or aqueous medium, comprise an acrylic polymer and can be crosslinked to form elastomers by drying;said method further comprising: using a flexible container of the big-bag type having a capacity greater than 250 liters;ensuring that at least one outlet opening, arranged in a lower part of the container, allows the viscous product to flow out of the container;exerting a pressure on at least one delimited region of the flexible container with the aid of a draining device so as to keep the container in an inflated or partially inflated state and to accelerate the flow;depressurizing at the end of draining,wherein said draining device comprises at least one pressure member having at least one set of (i) at least one roller and (ii) at least one counter-roller element, said roller and counter-roller element rotate about their respective axes,and a device for suspending the flexible container so that the opening(s) is (are) arranged at the bottom; the assembly being designed so that the roller and counter-roller element move in the downward direction while rolling and compressing the flexible container as it moves between the roller and counter-roller element. 2. A kit for carrying out the method of claim 1, comprising a viscous product having a viscosity greater than or equal to 50 Pa·s, selected from the group consisting of polyorganosiloxane compositions which can be crosslinked to form elastomers by polyaddition, polycondensation or dehydro(poly)condensation reactions, organic polymers comprising reactive organosilicic groups (referred to as MS polymers) and compositions which are charged in a solvent or aqueous medium, comprise an acrylic polymer and can be crosslinked to form elastomers by drying;a mechanically strong flexible container which is leaktight for said viscous product and which is of the big-bag type having a capacity greater than 250 liters;a draining device comprising at least one pressure member and/or at least one pressure fluid;wherein the draining device comprises a pressure member having at least one set of (i) at least one roller and (ii) at least one counter-roller element, said roller and counter-roller element rotate about their respective axes and a device for suspending the flexible container so that an opening(s) is (are) arranged at the bottom; the assembly being designed so that the roller and counter-roller element can move in the downward direction while rolling and compressing the flexible container as it moves between said roller and counter-roller element. 3. The kit of claim 2, wherein: the flexible container is equipped in its upper part with at least one gripping handle for suspending it and, in its lower part, with at least one outlet opening for the viscous product, the container advantageously having an overall pear shape whose flared part forms the base;and the roller and are adapted to be arranged on either side of the flexible container so as to squeeze it while moving in the downward direction, said pressure member being provided with a system for regulating an inter-axial distance so as to adapt the squeezing pressure exerted on the flexible container. 4. The kit of claim 2, wherein the flexible container has a capacity between 500 and 2,000 liters. 5. The kit of claim 2, wherein the wall of the container is mechanically strong and leaktight for the viscous product, and wherein it comprises: at least one element which provides mechanical strength and includes one or more sheets of materials which are identical to or different than one another;and at least one sealing element formed (i) by at least one polymer film, in the form of a coating and/or (2i) by at least one leaktight lining bag composed of one or more layers of materials selected from the group comprising synthetic polymer film and metal; the lining bag(s) being at least partially secured to the wall element providing the mechanical strength. 6. The kit of claim 5, wherein said synthetic polymer film is selected from the group consisting of polyolefins, polyesters and polyamides. 7. The kit of claim 6, wherein said polyolefins are selected from the group consisting of polyethylene and polypropylene. 8. The kit of claim 5, wherein said metal comprises aluminum. 9. The kit of claim 2, wherein the flexible container has a mechanically strong and leaktight wall made from fabric(s) whose weight in the uncoated state lies in the interval ranging from 100 to 300 g/m2, and wherein the lining bag has a thickness lying in the interval ranging from 5 to 500 microns. 10. The kit of claim 2, wherein the viscous product has a viscosity greater than 100 Pa·s. 11. The kit of claim 2, wherein the viscous product comprises a silicone putty. 12. The kit of claim 2, wherein the draining device further comprises a plate or a flat support adapted to be inserted between said flexible container and said at least one counter-roller element. 13. The method of claim 1, wherein the flexible container has a capacity between 500 and 2,000 liters. 14. The method of claim 1, wherein the wall of the container is mechanically strong and leaktight for the viscous product, and wherein it comprises: at least one element which provides mechanical strength and includes one or more sheets of materials which are identical to or different than one another;and at least one sealing element formed (i) by at least one polymer film, in the form of a coating and/or (2i) by at least one leaktight lining bag composed of one or more layers of materials selected from the group comprising synthetic polymer film and metal; the lining bag(s) being at least partially secured to the wall element providing the mechanical strength. 15. The method of claim 14, wherein said synthetic polymer film is selected from the group consisting of polyolefins, polyesters and polyamides. 16. The method of claim 15, wherein said polyolefins are selected from the group consisting of polyethylene and polypropylene. 17. The method of claim 14, wherein said metal comprises aluminum. 18. The method of claim 1, wherein the flexible container has a mechanically strong and leaktight wall made from fabric(s) whose weight in the uncoated state lies in the interval ranging from 100 to 300 g/m2, and wherein the lining bag has a thickness lying in the interval ranging from 5 to 500 microns. 19. The method of claim 1, wherein the viscous product is expelled from the flexible container at a flow rate greater than 50 liters per minute. 20. The method of claim 1, wherein the viscous product has a viscosity greater than 100 Pa·s. 21. The method of claim 1, wherein the viscous product comprises a silicone putty. 22. The method of claim 1, wherein the draining device further comprises a plate or a flat support adapted to be inserted between said flexible container and said at least one counter-roller element.