Containment assembly
View Patent ↗A containment assembly such as a down flow containment assembly including a barrier means between the processing zone and the operator breathing zone at least a first part of which is provided with flexible gloves for access to and maneuverability in the processing zone.
1. A down flow containment assembly comprising:
a powder handling booth of sufficient size to admit an operator, said powder handling booth having a rear wall, a floor for permitting the operator to stand thereon, and an upper surface;
a barrier means positioned in the powder handling booth and spaced apart from the rear wall to define a processing zone between the barrier means and the rear wall, wherein the barrier means extends from the upper surface at least to the floor of the powder handling booth, the barrier means comprising a front sheet and at least one side sheet, and at least a first part adapted or adaptable to permit the operator in the powder handling booth outside the processing zone to operate inside the processing zone, the first part comprising a flexible material extending at least to the floor and an excess of the flexible material resting directly on the floor, the flexible material comprising an untethered lower edge and a flexible portion in the shape of a glove or capable of being deformed into the shape of a glove; and
means for inducing air flow downwardly in the powder handling booth,
wherein the rear wall has a lower end and an upper end and is adapted at or near the lower end to transmit externally an air flow and adapted at or near to the upper end to transmit internally the air flow.
2. A containment assembly as claimed in claim 1 , wherein more than the first part of the barrier means comprises a flexible material.
3. A containment assembly as claimed in claim 1 , wherein substantially the whole of the barrier means is composed of flexible material.
4. A containment assembly as claimed in claim 1 , wherein the barrier means comprises a screen barrier.
5. A containment assembly as claimed in claim 1 , wherein the barrier means comprises an enclosure barrier.
6. A containment assembly as claimed in claim 5 , wherein the at least one side sheet comprises, a first side sheet and a second side sheet, and wherein the enclosure barrier encloses the processing zone when the enclosure barrier is positioned in the powder handling booth spaced apart from the rear wall.
7. A containment assembly as claimed in claim 6 , wherein substantially the whole of the front sheet is composed of the flexible material.
8. A containment assembly as claimed in claim 6 , wherein substantially the whole of the first side sheet is composed of the flexible material.
9. A containment assembly as claimed in claim 6 , wherein at least the front sheet is adapted or adaptable to permit the operator in the powder handling booth outside the processing zone to operate inside the processing zone.
10. A containment assembly as claimed in claim 1 , wherein the barrier means is bound within a rigid framework to define a self-contained unit.
11. A containment assembly as claimed in claim 1 , wherein the at least one flexible portion in the shape of a glove or capable of being deformed into the shape of a glove comprises a flexible sleeve terminating in a gloved end.
12. A containment assembly as claimed in claim 1 , wherein the barrier means is at least partially transparent.
13. A containment assembly as claimed in claim 12 , wherein the at least partially transparent flexible barrier means comprises a transparent window at or near to a typical operator's eye height.
14. A containment assembly as claimed in claim 1 , wherein the flexible material resting directly on the floor on which the operator is permitted to stand is situated outside of the processing zone.
15. A down flow containment assembly comprising:
a powder handling booth of sufficient size to admit an operator, said powder handling booth having a rear wall, a floor for permitting the operator to stand thereon, and an upper surface;
a barrier means comprising a curtain-type screen barrier, positioned in the powder handling booth and spaced apart from the rear wall to define a processing zone between the barrier means and the rear wall, wherein the barrier means extends from the upper surface at least to the floor of the powder handling booth, the barrier means comprising a front sheet, and at least one side sheet, and at least a first part adapted or adaptable to permit the operator in the powder handling booth outside the processing zone to operate inside the processing zone, the first part comprising a flexible material extending at least to the floor and an excess of the flexible material resting directly on the floor, the flexible material comprising an untethered lower edge and a flexible portion in the shape of a glove or capable of being deformed into the shape of a glove; and
means for inducing air flow downwardly in the powder handling booth,
wherein the rear wall has a lower end and an upper end and is adapted at or near the lower end to transmit externally an air flow and adapted at or near to the upper end to transmit internally the air flow.
16. A containment assembly as claimed in claim 15 , wherein the flexible material resting directly on the floor on which the operator is permitted to stand is situated outside of the processing zone.