A component is attached to filtration material by providing the component with a deformable extension member that is preferably integral with the component and that extends from a base portion of the component. The extension member is inserted through an opening provided through the filtration material...http://www.google.es/patents/US6959709?utm_source=gb-gplus-sharePatente US6959709 - Manner of attaching component elements to filtration material such as may be utilized in respiratory masks
Manner of attaching component elements to filtration material such as may be ...
