Retainer Panel for a Vacuum Cleaner Bag, with Seal

Abstract

The present invention provides a holding plate for a vacuum cleaner filter bag, comprising a base plate made of a plastic and having a passage opening formed therein, and a sealing membrane made of an elastic plastic material, which covers the passage opening and which is connected to the base plate, wherein the sealing membrane has a slit in the area of the passage opening, wherein the sealing membrane is, at least sectionwise, provided with a thickened area along the slit.

1 . A holding plate for a vacuum cleaner filter bag, the holding plate comprising:
 a base plate made of a plastic and having a passage opening formed therein, and   a sealing membrane made of an elastic plastic material, which covers the passage opening and which is connected to the base plate,   wherein the sealing membrane has a slit in an area of the passage opening, wherein the sealing membrane is, at least sectionwise, provided with a thickened area along the slit.   
     
     
         2 . The holding plate according to  claim 1 , wherein the thickened area comprises a bead. 
     
     
         3 . The holding plate according to  claim 1 , wherein the sealing membrane has two or more slits, the sealing membrane being, at least sectionwise, provided with a thickened area along one slit, a plurality of slits or all the slits. 
     
     
         4 . The holding plate according to  claim 1 , wherein the elastic plastic material is a thermoplastic or a liquid silicone rubber. 
     
     
         5 . The holding plate according to  claim 1 , wherein the sealing membrane comprises a corrugated area. 
     
     
         6 . The holding plate according to  claim 1 , wherein the sealing membrane is curved. 
     
     
         7 . The holding plate according to  claim 1 , wherein a thickness of the sealing membrane is increased by at least 20% in the region of the thickened area. 
     
     
         8 . The holding plate according to  claim 1 , wherein the sealing membrane has a thickness of at least 0.10 mm, or a maximum thickness of 1.0 mm. 
     
     
         9 . The holding plate according to  claim 1 , wherein the sealing membrane has, in the region of the thickened area, a thickness of at least 0.12 mm, or a maximum thickness of 1.20 mm. 
     
     
         10 . The holding plate according to  claim 1 , wherein the thickened area extends to only one side of the sealing membrane or to both sides of the sealing membrane. 
     
     
         11 . The holding plate according to  claim 1 , wherein the thickened area has a width of at least 0.10 mm, preferably at least 0.20 mm, and/or a maximum width of 0.40 mm, preferably a maximum width of 0.30 mm. 
     
     
         12 . The holding plate according to  claim 1 , wherein, outside the thickened area, the sealing membrane has a uniform thickness. 
     
     
         13 . The holding plate according to  claim 1 , wherein the thickened area has a constant or a variable thickness along the slit. 
     
     
         14 . The holding plate according to  claim 1 , wherein the sealing membrane is welded to the base plate or injection molded onto the base plate. 
     
     
         15 . A vacuum cleaner filter bag comprising
 a bag wall consisting of a filter material with an inlet opening,   a base plate made of a plastic and having a passage opening formed therein, and   a sealing membrane made of an elastic plastic material and covering the passage opening,   wherein the sealing membrane is connected to the base plate or the bag wall,   wherein the sealing membrane has a slit in an area of the passage opening, and   wherein the sealing membrane is, at least sectionwise, provided with a thickened area along the slit.   
     
     
         16 . The holding plate according to  claim 1 , wherein a thickness of the sealing membrane is increased by at least 50% in the region of the thickened area. 
     
     
         17 . The holding plate according to  claim 1 , wherein the sealing membrane has a thickness of at least 0.30 mm or a maximum thickness of 0.60 mm. 
     
     
         18 . The holding plate according to  claim 1 , wherein the sealing membrane has, in the region of the thickened area, a thickness of at least 0.40 mm or a maximum thickness of 0.70 mm. 
     
     
         19 . The holding plate according to  claim 1 , wherein the thickened area has a width of at least 0.20 mm or a maximum width of 0.30 mm.