Large drums for high-dispersion, high air content solids, and a method for filling them
AssigneeWacker Chemie AG
InventorsHelmut Maginot, Armin Grossmann
Life of this patent
Estimating the term…
Abstract
A large drum for containing high dispersion, high air content solids for repeated filling and emptying by means of vacuum filling plants and a method for filling them. The drums consist of at least two layers, an inner layer consisting of uncoated air-permeable fabric and an outer layer being coated so as to be dust tight and provide a moisture barrier. These layers being connected to one another by means of a special seam, so that it is possible for the drum to be deaerated solely through this seam. The seam includes an air-permeable dust-retaining filter strip material disposed between the drum layers.
Claims6
A flexible drum for containing high air content solids for the repeated filling and emptying by means of vacuum filling plants, comprising
- at least an inner and an outer layer disposed adjacent to each other, said inner layer comprising an uncoated air-permeable material;
- said outer layer being coated material so as to be dust tight and forms a moisture barrier;
- and
- means for connecting the inner and outer layer together to define a seam, said seam comprising an air-permeable dust-retaining filter material disposed between said inner layer and outer layer and said filter material on front side and back side of said means for connecting;
- so that the drum can be deaerated solely through said seam.
Dependencies are inferred from the claim text.